GAS-CHARGING AND FLANGING MACHINE

TECHNICAL FIELD

The present disclosure relates to the field of shock absorber processing, and in particular to a gas-charging and flanging machine.

BACKGROUND

At present, gas-charging and flanging of a shock absorber are processed by different machines. Gas-charging is carried out after flanging, and as such production efficiency is low. During gas-charging, an insert needs to be inserted through a sealing ring of the shock absorber to be processed. Such an operation will easily damage the sealing ring and affect the sealing performance of the shock absorber assembly. In addition, the existing flanging machine needs to exert a great pressure in order to flange the workpiece.

SUMMARY

The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, the present disclosure is required to provide a gas-charging and flanging machine.

The present disclosure provides a gas-charging and flanging machine, including a spin-and-press flanging device for flanging a workpiece, the spin-and-press flanging device including a spin-and-press mechanism, and the spin-and-press mechanism including a spin-and-press wheel formed with a slant position and a flat position, wherein the slant position is used for pressing a corresponding slant-forming position of the workpiece to form a slanted face, the flat position is used for pressing and flattening the slanted face of the workpiece, the spin-and-press wheel displaces axially under control of an external force exerted on the spin-and-press mechanism so that a working face facing the workpiece is switchable between the slant position and the flat position.

Preferably, the spin-and-press mechanism further includes a first bearing, a second bearing and a compressing spring, the spin-and-press wheel includes a spin-and-press portion and a spin-and-press shaft connected to the spin-and-press portion, and the spin-and-press portion includes a first end, a second end opposite to the first end, and a spin-and-press face connecting the first end and the second end, wherein the spin-and-press face is used for spinning and pressing the workpiece, the spin-and-press face is formed with a linear spin-and-press section and a circular arc spin-and-press section connected to the linear spin-and-press section, the linear spin-and-press section is formed with the flat position, the circular arc spin-and-press section is formed with the slant position, a front end of the spin-and-press shaft is connected to the second end, the first and second bearings and the compressing spring are sleeved on the spin-and-press shaft, the compressing spring is interposed between the first bearing and the second bearing, and the spin-and-press wheel is movable in an axial direction of the spin-and-press shaft.

Preferably, an adjusting pad is interposed between the first end and the first bearing.

Preferably, a locking nut is fixed to a rear end of the spin-and-press shaft.

Preferably, the spin-and-press flanging device includes a sealing wheel mounting disk and a guiding mechanism, the guiding mechanism and the spin-and-press mechanism are installed in the sealing wheel mounting disk, and the guiding mechanism is used for straightening the workpiece such that the workpiece is disposed coaxially with the spin-and-press flanging device.

Preferably, the first bearing, the second bearing and the compressing spring are located between the rear end of the spin-and-press shaft and the second end, a spin-and-press shaft end cover is fixed on a surface of an outer side of the sealing wheel mounting disk, and the locking nut and the rear end of the spin-and-press shaft expose outside through the spin-and-press shaft end cover.

Preferably, the sealing wheel mounting disk has a cylindrical shape, the number of the spin-and- press mechanism is three, the three spin-and-press mechanisms are evenly distributed along a circumferential direction of the sealing wheel mounting disk.

Preferably, the spin-and-press shaft is disposed along a radial direction of the sealing wheel mounting disk, and the first end of the spin-and-press portion faces a center of the sealing wheel mounting disk.

Preferably, the number of the guiding mechanism is three, the three guiding mechanisms are evenly distributed along the circumferential direction of the sealing wheel mounting disk, and the spin-and-press mechanisms are spaced apart from the guiding mechanisms.

Preferably, each of the guiding mechanisms includes a guiding shaft, a guiding wheel and a guiding bearing, the guiding shaft is fixed in the sealing wheel mounting plate, the guide wheel is mounted on the guiding shaft, and the guiding bearing is interposed between the guiding wheel and the guiding shaft.

In the gas-charging and flanging machine according to an embodiment of the present disclosure, since the spin-and-press wheel can displace axially, the working surface facing the workpiece can be switched between the slant position and the flat position. Therefore, the slanted face of the workpiece is first formed and then the slanted face is pressed and flattened. Hence, less pressure is required to achieve flanging of the workpiece, as compared to traditional flanging machines.

The present disclosure will be further explained in conjunction with the drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present disclosure will become apparent and be easily understood in the description of the embodiments in conjunction with the following figures, wherein:

FIG. 1 is a perspective view of a gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 2 is another perspective view of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 3 is yet another perspective view of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a workpiece;

FIG. 5 is an enlarged schematic view of portion V of the workpiece of FIG. 4;

FIG. 6 is a schematic view of a fixing device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 7 is a perspective view showing a spin-and-press flanging device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 8 is a schematic view showing the pre-flanging state of the spin-and-press flanging device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 9 is a schematic view showing the flange formation state of the spin-and-press flanging device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 10 is a cross-sectional view of the spin-and-press flanging device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 11 is an enlarged schematic view showing portion XI of the spin-and-press flanging device of FIG. 9.

FIG. 12 is a schematic view showing a gas-charging device and a rotary sealing device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 13 is a schematic view showing a gas-charging device and a rotary sealing device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 14 is a cross-sectional view of the gas-charging device of FIG. 13 taken along XIV-XIV;

FIG. 15 is a partial cross-sectional view showing the gas-charging and flanging machine with regard to the rotary sealing device according to an embodiment of the present disclosure;

FIG. 16 is an enlarged schematic view of portion XVI of FIG. 15;

FIG. 17 is a perspective view showing double threaded rods pressure-applying device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 18 is a plan view showing the double threaded rods pressure-applying device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 19 is a schematic view showing the structure of the double threaded rods pressure-applying device of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 20 is a perspective view showing a screw assembly of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 21 is a cross-sectional view showing the screw assembly of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 22 is another cross-sectional view showing the screw assembly of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 23 is a perspective view showing a rod-extracting mechanism of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 24 is a view showing the structure of the rod-extracting mechanism of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 25 is a view showing the piston rod-extracting state of the rod-extracting mechanism of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 26 is an enlarged schematic view of portion XXVI of FIG. 25;

FIG. 27 is an enlarged schematic view of portion XXVII of FIG. 25;

FIG. 28 is a schematic view showing the state of a pressurizing piston rod of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 29 is a schematic view showing the out of contact state of a reciprocating force measuring mechanism of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 30 is a schematic view showing the contact state of the reciprocating force measuring mechanism of the gas-charging and flanging machine according to an embodiment of the present disclosure;

FIG. 31 is a perspective view showing a spin-and-press flanging device of the gas-charging and flanging machine according to an embodiment of the present disclosure; and

FIG. 32 is a partial cross-sectional view showing a spin-and-press flanging device of the gas- charging and flanging machine according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure are described in detail below, and examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The following embodiments described with reference to the accompanying drawings are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure.

In the description of the present disclosure, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. are based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of the description of the present disclosure and simplification of the description. It does not indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present disclosure. Moreover, the terms “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” or “second” may include one or more of the described features either explicitly or implicitly. In the description of the present disclosure, the meaning of “plurality” is two or more unless specifically and specifically defined otherwise.

In the description of the present application, it should be noted that the terms “mounted”, “connected”, and “connected” are to be interpreted broadly unless otherwise explicitly defined. For example, the elements may be fixedly or detachably connected, connected as one piece, mechanically connected, electrically connected, communicating with each other, directly or indirectly connected through an intermediate medium, internal communication of two elements, or interaction of two elements. The specific meanings of the above terms in the present application can be understood by those skilled in the art on a case-by-case basis.

In the present disclosure, unless otherwise specifically define, a first feature is disposed “on” or “under” a second feature may include direct contact of the first and second features, and may also include indirect contact of the first and second features through additional features between them. Moreover, a first feature is disposed “on”, “over” and “above” a second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the level of the first feature being higher than the second feature. A first feature is disposed “below”, “under” and “beneath” a second feature may include the first feature being directly below and obliquely below the second feature, or merely the level of the first feature being lower than the second feature.

The following description provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the description of the present disclosure, components and arrangement of some specific examples are described below. Of course, they are merely examples and are not intended to be limiting. In addition, the description may be repeated with reference numerals and/or reference characters in various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Further, the following description provides various specific examples of materials and processes, but one of ordinary skill in the art may be aware that other processes and/or other materials may be used.

Referring to FIG. 8 to FIG. 11, a gas-charging and flanging machine 10 of the present disclosure may include a spin-and-press flanging device 12 for flanging a workpiece 20. The spin-and-press flanging device 12 may include a spin-and-press mechanism 123. The spin-and-press mechanism 123 may include a spin-and-press wheel 123a formed with a slant position and a flat position. The slant position may be used for pressing a corresponding slant-forming position of the workpiece 20 to form a slanted face. The flat position may be used for pressing and flattening the slanted face of the workpiece 20. The spin-and-press wheel 123 displaces axially under control of an external force exerted on the spin-and-press mechanism 123 so that a working face facing the workpiece 20 is switchable between the slant position and the flat position.

In the gas-charging and flanging machine 10 of the embodiment of the present disclosure, since the spin-and-press wheel 123a can displace axially, the working surface facing the workpiece 20 can be switched between the slant position and the flat position. Therefore, the slanted face of the workpiece 20 is first formed, and then the slanted face is pressed and flattened. Hence, less pressure is required to achieve flanging of the workpiece, as compared to the traditional flanging machine.

The spin-and-press mechanism 123 may further include a first bearing 123b, a second bearing 123c and a compressing spring 123d. The spin-and-press wheel 123a may include a spin-and-press portion 123h and a spin-and-press shaft 123i connected to the spin-and-press portion 123h. The spin-and-press portion 123h may include a first end 123j, a second end 123k opposite to the first end 123j, and a spin-and-press face 123l connecting the first end 123j and the second end 123k. The spin-and-press face 123l may be used for spinning and pressing the workpiece 20. The spin-and-press face 123l may be formed with a linear spin-and-press section 123m and a circular arc spin-and-press section 123n connected to the linear spin-and-press section 123m. The linear spin-and-press section 123m may be formed with the flat position, and the circular arc spin-and-press section 123n may be formed with the slant position. A front end of the spin-and-press shaft 123i may be connected to the second end 123k. The first and second bearings 123b, 123c and the compressing spring 123d may be sleeved on the spin-and-press shaft 123i. The compressing spring 123d may be interposed between the first bearing 123b and the second bearing 123c. The spin-and-press wheel 123 may be movable in an axial direction of the spin-and-press shaft 123i.

It can be seen that since the spin-and-press wheel 123a can displace axially along the spin-and-press shaft 123i, the spin-and-press point of the spin-and-press face 123l and the workpiece 20 can be changed. The circular arc spin-and-press section 123n can be changed into a linear spin-and-press section, thereby realizing pre-flanging the workpiece 20 to form a slanted face and then further flanging to form a flat face. Therefore, less pressure is required to achieve flanging of the workpiece, as compared to traditional flanging machines.

Referring to FIG. 1 to FIG. 5, the gas-charging and flanging machine 10 of the embodiment of the present disclosure first charging a gas into the workpiece 20, and then flanges the workpiece 20 to produce a shock absorber. The workpiece 20 may include a cylindrical oil storage cylinder 21, a piston rod 22, a guiding mechanism 23 and an oil seal 24. The oil storage cylinder 21 may include a bottom end and a top end opposite to the bottom end. The bottom end may be a closed end. The piston rod 22 may be inserted into the oil storage cylinder 21 from the top end of the oil storage cylinder 21 and may be partially exposed out of the oil storage cylinder 21. The top end of the oil storage cylinder 21 may be provided with the guiding mechanism 23. The guiding mechanism 23 may be sleeved on the piston rod 22. The guiding mechanism 23 may be placed between the oil storage cylinder 21 and the piston rod 22. The oil seal 24 may be disposed at the top end of the oil storage cylinder 21. The oil seal 24 may be used for sealing the top end of the oil storage cylinder 21. The oil seal 24 may sleeve on the piston rod 22 and abut against the guiding mechanism 23. After the workpiece 20 has been flanged by the gas-charging and flanging machine 10, the top end of the oil storage cylinder 21 may be folded up to compress the oil seal 24.

The gas-charging and flanging machine 10 may include a fixing device 11, a spin-and-press flanging device 12, a gas-charging device 13, a rotary sealing device 14, and a double screw pin pressure feeding device 15. The fixing device 11 may be used for fixing the workpiece 20. The gas-charging device 13 may be used for charging a gas into the workpiece 20. The spin-and-press flanging device 12 may be used for flanging the workpiece 20. The rotary sealing device 14 may be used for ensuring the gas sealing capacity during gas-charging and flanging of the workpiece 20. The double screw pin pressure feeding device 15 may be used to control the lifting of the spin-and-press flanging device 12.

Referring to FIG. 6, in the present embodiment, the fixing device 11 may include a base 111, a mounting bracket 112, a positioning block 113, a swinging rod 114, a pressing rod 115, a cylinder 116, and a connecting rod 117. The base 111 may be used for mounting the workpiece 20. The base 111 may include a bottom plate 111a, and a cylindrical fixing position 111b disposed on the bottom plate 111a. The fixing position 111b may be used for mounting the workpiece 20. The mounting bracket 112 may be fixed to the bottom plate 111a. The positioning block 113 may be fixed to the mounting bracket 112 and may be semi-annular in shape. The positioning block 113 may be located above the fixing position 111b. The cylinder 116 may be used for driving the connecting rod 117. The cylinder 116 may be fixed on the mounting bracket 112 and may be connected to the connecting rod 117. The swinging rod 114 may be rotatably disposed on the mounting bracket 112 and may be L-shaped. The swinging rod 114 may include a first swinging rod 114a and a second swinging rod 114b connected to the first swinging rod 114a. One end of the first swinging rod 114a may be connected with the connecting rod 117 and the second swinging rod 114b may be connected with the pressing rod 115. The pressing rod 115 may be used for pressing the workpiece 20 on the positioning block 113. Specifically, the second swinging rod 114b may be formed with a mounting groove 114c. The pressing rod 115 may include a cylindrical abutting portion 115a, and a cylindrical portion 115b connected to the abutting portion 115a. The cylindrical abutting portion 115a may be coaxially disposed with the cylindrical portion 115b. The diameter of the abutting portion 115a may be larger than the diameter of the cylindrical portion 115b. The cylindrical portion 115b may be disposed in the mounting groove 114c. A fixing nut 11 a may be attached to the cylindrical portion 115b, and the second swing rod 114b may be located between the abutting portion 115a and the fixing nut 11a. When the gas-charging and flanging machine 10 is in operation, the bottom end of the workpiece 20 may be mounted on the fixed position 111b. The positioning portion may be wrapped on an outer side of the workpiece 20. The cylinder 116 can drive the connecting rod 117 to move forward so that the second swinging rod 114b may be pressed against the abutting portion 115a, and the abutting portion 115a may press the workpiece 20 against the positioning block 113. After operation of the gas-charging and flanging machine 10 is completed, the cylinder 116 can drive the connecting rod 117 to move rearward so that the pressing rod 115 can release the workpiece 20.

Referring to FIG. 7 to FIG. 11, in the embodiment, the spin-and-press flanging device 12 may be a horizontal spin-and-press flanging device. The horizontal spin-and-press flanging device 12 may include a sealing wheel mounting disk 121, a guiding mechanism 122, and a spin-and-press mechanism 123. The guiding mechanism 122 and the spin-and-press mechanism 123 may be mounted in the sealing wheel mounting disk 121, and the guiding mechanism 122 can be used to straighten the workpiece 20 such that the workpiece 20 can be coaxially disposed with the spin-and-press flanging device 12. The spin-and-press mechanism 123 may be used to spin the workpiece 20 and achieve the flanging of the workpiece 20. The sealing wheel mounting disk 121 may be cylindrical in shape. A cylindrical machining chamber 121a may be formed at the center of the sealing wheel mounting disk 121. The guiding mechanism 122 may be disposed in the sealing wheel mounting disk 121. The number of the guiding mechanism 122 may be three, and the three guiding mechanisms 122 may be evenly distributed along the circumferential direction of the sealing wheel mounting disk 121. Each guiding mechanism 122 may include a guiding shaft 122a, a guiding wheel 122b, and a guiding bearing 122c. The guiding shaft 122a may be fixed in the sealing wheel mounting disk 121, and the guiding wheel 122b may be sleeved on the guiding shaft 122a between the guiding wheel 122b and the guiding shaft 122a with the guide bearing 122c mounted in between.

In the present embodiment, the number of spin-and-press mechanism 123 may be three. The three spin-and-press mechanisms 123 may be evenly distributed along the circumferential direction of the sealing wheel mounting disk 121. The guiding mechanism 122 may be sandwiched between two adjacent spin-and-press mechanisms 123. The spin-and-press mechanism 123 may include a spin-and-press wheel 123a, a first bearing 123b, a second bearing 123c, a compressing spring 123d, an adjusting pad 123e, a lock nut 123f, and a spin-and-press shaft end cover 123g. The spin-and-press wheel 123a may include a spin-and-press portion 123h and a spin-and-press shaft 123i connected to the spin-and-press portion 123h. The spin-and-press portion 123h may have a substantially truncated cone shape. The spin-and-press portion 123h may include a first end 123j, a second end 123k opposite to the first end 123j, and a spin-and-press surface 123l connecting the first end 123j and the second end 123k. The spin-and-press surface 123l may be formed with a linear spin-and-press section 123m and a circular arc spin-and-press section 123n connected to the linear spin-and-press section 123m. The front end of the spin-and-press shaft 123i may be connected to the second end 123k. The spin-and-press shaft 123i may be disposed in a radial direction of the sealing wheel mounting disk 121, and the first end 123j of the spin-and-press portion 123h may be facing the center of the sealing wheel mounting disk 121. The first bearing 123b, the second bearing 123c, and the compressing spring 123d may be sleeved on the spin-and-press shaft 123i. The compressing spring 123d may be interposed between the first bearing 123b and the second bearing 123c. The adjusting pad 123e may be interposed between the first end 123j of the spin-and-press portion 123h and the first bearing 123b. The locking nut 123f may be fixed to the rear end of the spin-and-press shaft 123i. The first bearing 123b, the second bearing 123c and the compressing spring 123d may be located between the second end 123k of the spin-and-press portion 123h and the rear end of the spin-and-press shaft 123i. The outer side surface of the sealing wheel mounting disk 121 may be fixed with the spin-and-press shaft end cover 123g. The rear end of the locking nut 123f and the spin-and-press shaft 123i may be exposed to the outside through the spin-and-press shaft end cover 123g.

The spin-and-press flanging device 12 may include two working processes, which may be respectively pre-flanging and flange-forming. During pre-flanging, the position of the workpiece 20 to be flanged may be located in a processing cavity 121a of the sealing wheel mounting disk 121. The three evenly disposed guiding wheel 122b can straighten the workpiece 20. The sealing wheel mounting disk rotates at a high speed and presses down. The upper end of the oil storage cylinder 21 of the workpiece 20 spun and pressed into a slanted face by the circular arc spin-and-press section 123n of the spin-and-press wheel 123a. During flange-forming, the sealing wheel mounting disk 121 spins at high speed and presses at the same time. The flanging pressure may increase and force the spin-and-press shaft 123i to move with the adjusting pad 123e and the first bearing 123b, and then move the compressing spring 123d. At this time, the spin-and-press point changes from the circular arc spin-and-press section 123n to the linear spin-and-press section 123m. The linear spin-and-press section 123m of the spin-and-press wheel 123a spins, presses and bends the upper end of the oil storage cylinder 21 of the workpiece 20 into a flange portion 211 parallel to the linear spin-and-press section 123m. The flange portion 211 presses the oil seal 24 of the oil storage cylinder 21 and seals the upper end of the oil storage cylinder 21.

Referring to FIG. 31 and FIG. 32, in another embodiment, the spin-and-press flanging device 12 may be a vertical spin-and-press flanging device. The vertical spin-and-press flanging device 12 may include a sealing wheel mounting disk 121, a guiding mechanism 122, and a spin-and-press mechanism 123. The guiding mechanism 122 and the spin-and-press mechanism 123 may be mounted in the sealing wheel mounting disk 121, and the guiding mechanism 122 can be used to straighten the workpiece 20 such that the workpiece 20 can be coaxially disposed with the spin-and-press flanging device 12. The spin-and-press mechanism 123 may be used to spin the workpiece 20 and achieve the flanging of the workpiece 20. The sealing wheel mounting disk 121 may be cylindrical in shape. A cylindrical machining chamber 121a may be formed at the center of the sealing wheel mounting disk 121. The number of the spin-and-press mechanism 123 may be three. The three spin-and-press mechanisms 123 may be spaced apart from each other in the axial direction of the sealing wheel mounting disk 121. Each spin-and-press mechanism 123 may include a spin-and-press wheel 123a, a first bearing 123b, a second bearing, a compressing spring, an adjusting pad, a lock nut, and a spin-and-press shaft end cover. The spin-and-press wheel 123a may include a spin-and-press portion 123h and a spin-and-press shaft 123i connected to the spin-and-press portion 123h. The spin-and-press portion 123h may be substantially in the shape of a circular platform. The outer peripheral surface of the spin-and-press portion 123h may be formed with a spin-and-press surface 123l. The spin-and-press surface 123l may be formed with the linear spin-and-press section 123m and the circular arc spin-and-press section 123n connected to the linear spin-and-press section 123m. The axial direction of the spin-and-press shaft 123i may be parallel to the axial direction of the sealing wheel mounting disk 121. The first bearing 123b, the second bearing, and the compressing spring may be sleeved on the spin-and-press shaft 123i. The compressing spring may be interposed between the first bearing 123b and the second bearing. The adjusting pad may be interposed between one end of the spin-and-press portion 123h and the first bearing 123b. The locking nut may be fixed to the upper end of the spin-and-press shaft 123i. The first bearing 123b, the second bearing and the compressing spring may be interposed between one end of the spin-and-press portion 123h and the upper end of the spin-and-press shaft 123i. The spin-and-press portion 123h may pass through the bottom surface of the sealing wheel mounting disk 121 and expose to the outside.

Referring to FIG. 12 to FIG. 14, in the embodiment, the gas-charging device 13 may include a first clamping block 131, a second clamping block 132, a first clamping mechanism 133 and a second clamping mechanism 134. The first clamping block 131 and the second clamping block 132 may be used for enclosing and forming the sealed chamber 13a. The spin-and-press flanging device 12 may be received in the sealing chamber 13a. The first clamping mechanism 133 may include a first clamping cylinder 133a, a first cylinder block 133b, and a first clamping block seat 133c. The first clamping cylinder 133a may be mounted on the first cylinder block 133b. The first clamping cylinder 133a and the first clamping block 131 may be respectively connected to the left and right ends of the first clamping block seat 133c. The first clamping cylinder 133a drives the first clamp block 131 to move through the first clamp block 133c. The second clamping mechanism 134 may include a second clamping cylinder 134a, a second cylinder block 134b and a second clamping block seat 134c. The second clamping cylinder 134a may be mounted on the second cylinder block 134b. The left and right ends of the second clamping block seat 134c may be respectively connected to the second clamping block 132 and the second clamping cylinder 134a. The second clamping cylinder 134a drives the second clamping block 132 to move through the second clamping block seat 134c. The second clamping block seat 134c may be provided with the gas intake nozzle 13b. The gas intake nozzle 13b can communicate with the sealed chamber 13a.

Specifically, the first clamping block seat 133c may be substantially in the shape of a cuboid. The left end of the first clamping block seat 133c may be connected to the first clamping cylinder 133a. The right end of the first clamping block seat 133c may abut on the left side of the first clamping block 131. Two first hooks 133d may be disposed at the right end of the first clamp block 133c. The two first hooks 133d may be respectively fixed to the upper surface and the lower surface of the first clamp block 133c. The surface on the left side of the first clamp block 131 may be formed with two corresponding first slots 131a. Each of the first hooks 133d may be engaged in a first slot 131a. The second clamping block seat 134c may be substantially in the shape of a cuboid. The left end of the second clamping block seat 134c may abut on the surface of the right side of the second clamping block 132. The right end of the second clamping block seat 134c may be connected with the second clamping cylinder 134a. The two second hooks 134d may be disposed at the left end of the second clamp block 134c. The two second hooks 134d may be respectively fixed to the upper surface and the lower surface of the second clamp block 134c. The surface of the right side of the second clamp block 132 may be formed with two corresponding second slots 132a. Each of the second hooks 134d may be engaged in a second slot 132a.

In the present embodiment, the upper surface of the second clamping block seat 134c may be provided with a gas intake nozzle 13b. The second clamping block seat 134c and the second clamping block 132 may together form a gas intake passage 13c. The gas intake passage 13c, the gas intake nozzle 13b and the sealed chamber 13a may be in communication with each other. The left side of the first clamping block 131 may be formed with a first edge, and the left side of the second clamping block 132 may be formed with a second edge. The first edge may abut on the second edge to form the sealed chamber 13a. The first edge and the second edge may be provided with sealing layers to ensure the sealing property when the first clamping block 131 and the second clamping block 132 enclose. The upper surface of each of the first clamping block 131 and the second clamping block 132 may be formed with a first semicircular groove. The two first semicircular grooves may be symmetrically arranged. The two first semicircular grooves can be enclosed to form a first coupling sleeve 13d. The first coupling sleeve 13d may be used for engaging with the rotary sealing device 14. The lower surfaces of the first clamping block 131 and the second clamping block 132 may be respectively formed with two second semicircular grooves. The two second semicircular grooves may be symmetrically disposed. The two second semicircular grooves may enclose to form a second coupling sleeve 13e. The second coupling sleeve 13e may be used for engaging the oil storage cylinder 21 of the workpiece 20. Each of the first coupling sleeve 13d and the second coupling sleeve 13e may be provided with a seal ring 13f to ensure the sealing of the coupling region.

The operating process of the gas-charging device 13 is: after the workpiece 20 is placed in position, the first clamping cylinder 133a drives the first clamping block 131 through the first clamping block seat 133c, and the second clamping cylinder 134a drives the second clamping block 134c through the second clamping block seat 134c. The first clamping block 131 and the second clamping block 132 hold the workpiece 20. The first clamping block 131 and the second clamping block 132 abut against each other to form the sealed chamber 13a. Gas may be charged into the inner chamber of the workpiece through the gas intake nozzle along the gas intake passage 13c.

Referring to FIGS. 15 and 16, in the present embodiment, the rotary sealing device 14 and the spin-and-press flanging device 12 may be disposed coaxially. The rotary sealing device 14 may include a fixing mechanism 141 and a rotating mechanism 142. The rotating mechanism 142 can rotate relative to the fixing mechanism 141. The rotating mechanism 142 may be coupled to the spin-and-press flanging device 12 to drive the spin-and-press flanging device 12 to rotate.

Specifically, the rotary sealing device 14 may be generally cylindrical in shape. A portion of the rotary sealing device 14 may extend into the sealed chamber 13a of the gas-charging device 13 from the first coupling sleeve 13d. The other portion of the rotary sealing device 14 may be exposed outside. The rotary sealing device 14 may include a gas-charging rotary sleeve 141b, a rear end cover 141a, an outer rotary sealing cover 141c, a spin-and-press main shaft 142a, a transition flange 142b, and a cylinder-pressing connecting rod 14a. The gas-charging rotary sleeve 141b may be substantially cylindrical in shape and has a rear end. The cover 141a and the outer rotary sealing cover 141c may be respectively fixed to the upper and lower ends of the gas-charging rotary sleeve 141b. The spin-and-press flanging device 12 may be located below the outer rotary sealing cover 141c. The transition flange 142b may be interposed between the spin-and-press flanging device 12 and the outer rotary sealing cover 141c. The spin-and-press main shaft 142a may be inserted through the gas-charging rotary sleeve 141b, and the spin-and-press main shaft 142a may be fixedly connected with the transition flange 142b. The transition flange 142b may be fixedly connected with the spin-and-press flanging device 12. The cylinder-pressing connecting rod 14a may be disposed in the gas-charging rotary sleeve 141b. The cylinder pressing connecting rod 14a may be coaxially disposed with the gas-charging rotary sleeve 141b. A following sealing ring seat 14b may be disposed between the gas-charging rotary sleeve 141b and the spin-and-press main shaft 142a. A first rotating and pressing sealing ring 14f may be disposed on the following sealing ring seat 14b. A first rotary bearing 14c may be disposed between the gas-charging rotary sleeve 141b and the spin-and-press main shaft 142a. The first rotary bearing 14c may be located above the following sealing ring seat 14b. A second rotary bearing 14e may be disposed between the spin-and-press main shaft 142a and the cylinder-pressing connecting rod 14a. A spacing sleeve 14d may be disposed between the spin-and-press main shaft 142a and the cylinder-pressing connecting rod 14a. A first inner sealing ring seat 142c and a second inner sealing ring seat 142d may be interposed between the spin-and-press main shaft 142a and the cylinder-pressing connecting rod 14a. The first inner sealing ring seat 142c may be disposed on the transition flange 142b, and the second inner sealing ring seat 142d may be disposed on the first inner sealing ring seat 142c. A second rotating and pressing sealing ring 14g may be interposed between the first inner sealing ring seat 142c, the second inner sealing ring seat 142d and the cylinder pressing connecting rod 14a. The second rotary bearing 14e may be located above the second inner sealing ring seat 142d. The fixing mechanism 141 may include the rear end cover 141a, the gas-charging rotary sleeve 141b, and the outer rotary sealing cover 141c. The rotation mechanism 142 may include the spin-and-press main shaft 142a, the transition flange 142b, the first inner sealing ring seat 142c and the second inner sealing ring seat 142d.

The operating process of the rotary sealing device 14 is: when the gas-charging device 13 is charging a gas into the workpiece 20, the first clamping cylinder 133a and the second clamping cylinder 134a respectively drive the first clamping block 131 and the second clamping block 132 to move and abut each other and clamp on each other. The spin-and-press main shaft 142a drives the spin-and-press flanging device 12 to rotate at a high speed and press down through the transition flange 142b. The rear end cover 141a, the gas-charging rotary sleeve 141b, and the outer rotary sealing cover 141c may be connected together without rotating. The spin-and-press main shaft 142a, the transition flange 142b, the first inner sealing ring seat 142c, and the second inner sealing ring seat 142d rotate together to ensure that the spin-and-press main shaft 142a can rotate through the first rotary bearing 14c and the second rotary bearing 14e.

In the present embodiment, the gas-charging and flanging machine 10 may further include a mounting plate l0a and a resilient member 10b that connects the mounting plate l0a and the rear end cover 141a. The resilient member 10b may be disposed in a direction parallel to the axial direction of the spin-and-press flanging device 12. One end of the resilient member 10b may be fixedly coupled to the mounting plate 10a, and the other end of the resilient member 10b may be coupled to the rear end cover 141a. Preferably, the resilient member 10b may be a spring, and the number of spring may be two. The two springs may be respectively disposed on the left and right sides of the axial direction of the spin-and-press flanging device 12. The rotary sealing device 14 may be fixed on the mounting plate 10a. The spin-and-press flanging device 12 may be fixed on the rotary sealing device 14. The rotary sealing device 14 may be disposed coaxially with the spin-and-press flanging device 12. The rotary sealing device 14, the spin-and-press flanging device 12, and the gas-charging device 13 may be axially symmetrical. The first clamping block seat 133c may be provided with a first axial position-limiting member 10c , and the second clamping block seat 134c may be provided with a second axial position-limiting member 10d. The first axial position-limiting member 10c and the second axial position-limiting member 10d may be used for limiting axial movement of the spin-and-press flange device 12. The first axial position-limiting member 10c and the second axial position-limiting member 10d may be substantially in the shape of the Chinese character “ custom-character ”. The first axial position-limiting member 10c may include a first fixing portion 10e, a first engaging portion 10f, and a first extending portion 10g connecting the first fixing portion 10e and the first engaging portion 10f. The second axial position-limiting member 10d may include a second fixing portion 10h, a second engaging portion 10i, and a second extending portion 10j connecting the second fixing portion 10h and the second engaging portion 10i. The first axial position-limiting member 10c may be axially symmetrical with respect to the second axial position-limiting member 10d. The first fixing portion 10e may be fixedly connected to the first clamping block seat 133c, and the second fixing portion 10h may be fixedly connected to the second clamping block seat 134c. The first engaging portion 10f and the second engaging portion 10i can be used for engaging the rear end cover 141a, thus achieving axial position limitation of the spin-and-press flanging device 12.

When the gas-charging device 13 is in operation, the first clamping block 131 and the second clamping block 132 form the sealed chamber 13a. Due to an increase in pressure, there is an increase of the force of the spin-and-press flanging device 12 needed to overcome the resilient member 10b. The first axial position-limiting member 10c and the second axial position-limiting member 10d may engage with the rear end cover 141a, thereby limiting the spin-and-press flanging device 12 in the axial direction, and the spin-and-press flanging device 12 cannot move upwards.

Referring to FIG. 17 to FIG. 19, in the present embodiment, the double screw rod pressure feeding device 15 may include a feeding motor 151, a first transmission mechanism 152, a second transmission mechanism 153, a first threaded rod 154, a second threaded rod 155, a first threaded rod nut 156, a first threaded rod nut seat 157, a second threaded rod nut 158, a second threaded rod nut seat 159, a lifting plate 15a, and a fixing plate 15b. The first transmission mechanism 152 may include a first driving pulley 152a, a first driven pulley 152b, and a first belt 152c connecting the first driving pulley 152a and the first driven pulley 152b. The first driven pulley 152b may be connected to the first threaded rod 154. The second transmission mechanism 153 may include a second driving pulley 153a, a second driven pulley 153b, and a second belt 153c connecting the second driving pulley 153a and the second driven pulley 153b. The second driven pulley 153b may be connected with the second threaded rod 155. The feeding motor 151 may be used for driving the first driving pulley 152a and the second driving pulley 153a. The first driving pulley 152a may be located above the second driving pulley 153a. The first driving pulley 152a may be coaxially disposed with the second driving pulley 153a. The first threaded rod 154 and the second threaded rod 155 may be used for driving the lifting plate 15a to move up and down. The first threaded rod nut seat 157 and the second threaded rod nut seat 159 may be fixed on the lifting plate 15a. The first threaded rod 154 may be connected to the first threaded rod nut seat 157 by the first threaded rod nut 156, and the second threaded rod 155 may be connected with the second threaded rod nut seat 159 by the second threaded rod nut 158. The bottom surface of the lifting plate 15a may be mounted with the rotary sealing device 14 and the spin-and-press flanging device 12. The spin-and-press flanging device 12 may be located below the rotary sealing device 14. The first threaded rod 154 and the second threaded rod 155 may be respectively located on the two sides of the axis of the spin-and-press flanging device. The first threaded rod 154 may be parallel to the second threaded rod 155. The first threaded rod nut seat 157 may be disposed adjacent to the left side of the lifting plate 15a, and the second threaded rod nut seat 159 may be disposed adjacent to the right side of the lifting plate 15a. The lifting plate 15a may be disposed parallel with the fixing plate 15b. The feeding motor 151, the first transmission mechanism 152 and the second transmission mechanism 153 may be mounted on the top surface of the fixing plate 15b. The two sides of the first threaded rod 154 and the second threaded rod 155 may pass through the fixing plate 15b and the lifting plate 15a, respectively. Preferably, the first driving pulley 152a and the second driving pulley 153a may be in the form of a unitary structure. In this way, the first threaded rod 154 and the second threaded rod 155 can balance the downward force, thereby making transmission more stable.

The operating process of the double threaded rod pressure feeding device 15 is: the feeding motor 151 rotates to drive the first driving pulley 152a and the second driving pulley 153a. The first driving pulley 152a drives the first driven pulley 152b through the first belt 152c. The first driven pulley 152b drives the first threaded rod 154. The first threaded rod 154 and the first threaded rod nut 156 convert rotary motion into linear motion. The second driving pulley 153a drives the second driven pulley 153b through the second belt 153c. The second driven pulley 153b drives the second threaded rod 155. The second threaded rod 155 and the second threaded rod nut 158 convert rotary motion into linear motion. The left and right sides synchronously move up and down so that the lifting plate 15a can move up and down.

Referring to FIG. 20 to FIG. 22, in the present embodiment, the gas-charging and flanging machine 10 may further include a screw assembly 16. The screw assembly 16 may include a driving mechanism 161, a screw rod 162, a universal joint 163, and a screw head 164. The driving mechanism 161 may be used to drive the screw rod 162 to rotate. The driving mechanism 161 may include a screw rod rotating motor 161a, a screw rod driving gear 161b, and a screw rod driven gear 161c. The screw rod rotating motor 161a may be connected with the screw rod driving gear 161b. The screw rod driving gear 161b may be engaged with the screw rod driven gear 161c. The screw rod 162 may include a first connecting end 162a and a second connecting end 162b opposite to the first connecting end 162a. The first connecting end 162a of the screw rod 162 may be connected with screw rod driven gear 161c. The screw rod 162 may be provided with the universal joint 163. The universal joint 163 may be located between the first connecting end 162a and the second connecting end 162b, and the universal joint 163 may be disposed adjacent to the second connecting end 162b. The second connecting end 162b of the screw rod 162 may be fixedly connected to the screw head 164. A rotating sleeve 16a may be sleeved on the first connecting end 162a of the screw rod 162. A rotating bearing 16b may be disposed between the rotating sleeve 16a and the screw rod 162. The driving mechanism 161 may be mounted on the connecting plate 16c. The screw rod driving gear 161b and the screw rod driven gear 161c may be located on the top surface of the connecting plate 16c. The body of the screw rod rotating motor 161a may be located below the connecting plate 16c. The bottom surface of the connecting plate 16c may be provided with a motor adjusting plate 16d, and the body of the screw rod rotating motor 161a may be fixed on the motor adjusting plate 16d. The driving shaft of the screw rod motor 161a may pass through the connecting plate 16c so as to connect with the screw rod driving gear. The screw rod 162 may pass through the connecting plate 16c so as to connect with the screw rod driven gear 161c. The universal joint 163 and the screw head 164 may be located below the connecting plate 16c, and the screw head 164 may be formed with internal screw threads that connect with the screw threads of the piston rod 22 of the workpiece 20.

The screw rod rotating motor 161a drives the screw rod 162 to rotate through the screw rod driving gear 161b and the screw rod driven gear 161c, and then drives the screw head 164 and the screw threads on the workpiece 20 to screw together through the universal joint 163. In this way, the screw head 164 may achieve flexible connection through the universal joint 163 in both the X and Y directions, thereby ensuring that the screw head 164 can be screwed into the workpiece 20 even when the screw rod 162 may not be concentric with the screw threads of the workpiece 20.

Referring to FIG. 23 to FIG. 27, in the present embodiment, the gas-charging and flanging machine 10 may further include a rod-extracting mechanism 17. The rod-extracting mechanism 17 may include a rod-extracting power device 171, a lifting frame 172, a moving plate 173, a screw threaded rod 174, and a screw threaded rod nut 175. The screw assembly 16 may be mounted on the moving plate 173, and the moving plate 173 may be slidably mounted on the lifting frame 172. The screw threaded rod 174 and the moving plate 173 may be connected by the screw threaded rod nut 175. The rod-extracting power device 171 may be used to drive the screw threaded rod 174 to rotate, thereby realizing up and down movement of the moving plate 173 along the lifting frame 172. The rod-extracting power device 171 may include a screw motor 171a, a screw driving wheel 171b, and a screw driven wheel 171c. The screw motor 171a may be connected to the screw driving wheel 171b, and the screw driving wheel 171b may be connected to the screw driven wheel 171c. The screw driven wheel 171c may be coupled to the screw threaded rod 174. The rod-extracting mechanism 17 may be mounted on the lifting plate 15a. The lifting frame 172 may include two opposite vertical side plates 172a. The two vertical side plates 172a may be fixed on the lifting plate 15a. Each vertical side plate 172a may be provided with a wiring rail 172b. The moving plate 173 may be slidably mounted between the two wiring rails 172b. One end of the screw threaded rod 174 may be fixed to the top end of the lifting frame 172, and the other end of the screw threaded rod 174 may be connected to the screw driven wheel 171c.

When the gas-charging device 13 needs to charge a gas into the workpiece 20, the piston rod 22 of the workpiece 20 needs to be pulled up first so that it is fixed between the guiding mechanism 23 of the piston rod 22 and the oil storage cylinder 21, forming a gap for gas intake. The process of pulling the piston rod 22 by the gas-charging and flanging machine 10 may be as follows: First, the screw motor 171a drives the screw threaded rod 174 to rotate through the screw driving wheel 171b and the screw driven wheel 171c. The rotary motion can be converted to linear motion by the screw threaded rod nut 175, and the moving plate 173 can be moved downwards, thereby moving the screw rod 162 downwards. Then, the screw rod rotating motor 161a drives the screw rod 162 to rotate through the screw rod driving gear 161b and the screw rod driven gear 161c, and drives the screw head 164 and the piston rod 22 of the workpiece 20 to screw together through the universal joint 163. The screw motor 171a may be reversed and drive the moving plate 173 to move upwards, thereby lifting the piston rod 22 on the workpiece 20.

Referring to FIG. 28, in the present embodiment, the gas-charging and flanging machine 10 may further include a rod-pressing power device 18. The rod-pressing power device 18 may include a pressing cylinder 181, a pressing connecting rod 182, and a pressing rod 183. The pressing cylinder 181 may be mounted on the lifting frame 172. After the piston rod 22 is pulled up to charge a gas, the cylinder rod of the pressing cylinder 181 extends and presses downwards. The cylinder rod of the pressing cylinder 181 abuts against the pressing connecting rod 182, and the pressing rod 183 abut against the oil seal 24 of the oil storage cylinder 21 of the workpiece 20. The oil seal 24 abuts against the guiding mechanism 23 of the oil storage cylinder 21, thereby pressing the guiding mechanism 23 into the oil storage cylinder 21.

Referring to FIG. 29 and FIG. 30, in the present embodiment, the gas-charging and flanging machine 10 may further include a reciprocating force measuring mechanism 19. The reciprocating force measuring mechanism 19 may include a load sensor 191, a sensor head 192 and a sensor push rod 193. The sensor push rod 193 may be disposed on the screw rod driven gear 161c. The first connecting end 162a of the screw rod 162 may be concavely formed with a conical groove 162c in the axial direction. The sensor push rod 193 can be facing the conical groove 162c. The sensor head 192 may be located directly above the sensor push rod 193. The load sensor 191 may be electrically coupled to the sensor head 192, and the load sensor 191 may be positioned directly above the sensor head 192.

After gas-charging and flanging by the gas-charging and flanging machine 10 is completed, the screw rod 162 may be withdrawn from the screw threads of the workpiece 20. The piston rod 22 moves upwards due to pressure, and the piston rod 22 may press against the screw rod 162 to drive the screw rod driven tooth 161c and the sensor push rod 193 to move upwards, and reach the sensor head 192 such that the load sensor 191 can read the pushing force data of the piston rod 22.

The operating process of the gas-charging and flanging machine 10 of the present disclosure is: first charging a gas, and then flanging the workpiece 20, and finally measuring the pushing force of the piston rod 22. The gas-charging device 13 and the spin-and-press flanging device 12 may be completed at the same working station. Both gas-charging and flanging can be completed in the sealed chamber 13a, such that the oil seal 24 cannot be damaged, thereby ensuring the sealing performance of the produced shock absorber.

In the description of the present specification, the terms “one embodiment”, “some embodiments”, “illustrative embodiment”, “example”, “specific example”, or “some examples”, etc. refer to the combination of characteristic, structure, material or special feature described in the embodiments or examples that may be included in at least one embodiment or example of the disclosure. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the characteristic, structure, material, or special feature described may be combined in a suitable manner in any one or more embodiments or examples.

Although certain embodiments of the disclosure have been shown and described, a person of ordinary skill in the art will understand that various modifications, changes, substitutions and variations of the embodiments may be made without departing from the scope of protection. The scope of protection is defined by the claims and their equivalents.

GAS-CHARGING AND FLANGING MACHINE

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CPC

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