Patent Grant
10350660
The present application is the U.S. national phase of PCT Application No. PCT/JP2015/056758 filed on Feb. 27, 2015, which claims a priority of the Japanese patent application JP2014-75769 filed on Mar. 13, 2014, which is incorporated herein by reference in its entirety.
The present disclosure relates to a manufacturing method for an interlocked tube and a manufacturing device therefor, which is an automatic formation device or an automatic formation system that sets an equipment operation time from a required manufacturing time per product during the manufacturing of tubes having a round, polygonal, or oblong cross-section. The tube may be easily and precisely shaped and uneasily loosened, so as to provide excellent machining performance when the interlocked tube is cut off and provide excellent operation efficiency for the manufacturing device itself.
In the past, as an exhaust tube for a vehicle such as an automobile, a flexible tube as shown in
However, for the interlocked tube 2 of the flexible tube 1, as shown by the arrow in
Moreover, when shaping the interlocked tube, the elongate tabular metal band plate 2a with a certain width is extracted from a decoiler 6 and then fed into a multistage roll-forming device 8 while coating with lubricating oil by an oil-applying device 7 as shown in
In addition, there are cases that such interlocked tube has a cross section with a circular shape or a polygonal shape, For example, Patent Literature 1 discloses that, for an interlocked tube with a circular cross section, although with excellent impermeability, it has the defect of being easy to loosen during rotating, i.e., it has defects of being loosened in winding and easy to be detached. Further, it is described that, for an interlocked tube with a polygonal cross section, although with poor impermeability, it is able to accurately set the rigidity of the interlocked tube and the detachability of a guiding portion connected thereto due to the vibration. The polygonal end has the function to enable the hose to rotate without loosening while maintaining its predetermined shape and winding state, etc (see paragraphs [0002]-[0005] of the Patent Literature 1).
That is, for the interlocked tube with a polygonal cross section, although a core member with a polygonal cross section is used during winding, it can be hung over a polygonal end of the core member. For example, Patent Literature 2 (see FIG. 2) and Patent Literature 4 (see FIG. 12) show such an interlocked tube with a polygonal cross section.
On the other hand, for the interlocked tube with a circular cross section, although a core member with a circular cross section is used during winding, it cannot be hung over due to its circular shape, and springback will occur during the winding. The tube cannot be wound while maintaining its predetermined shape, and rotation and loose may occur due to the relationship between springback and the thrust. In addition, the interlocked tube with an oblong cross section also has the same problem.
In order to overcome the above-mentioned drawbacks, Patent Literature 4 discloses in FIG. 1 that, after the interlocked tube is wound into a diameter less than that of the final shape, a rewinding force, and further, a force in a direction opposite to a rotation direction, is applied to the interlocked tube. Moreover, the mechanism for applying to the interlocked tube the force in a direction opposite to the rotation direction is a roller or an elastic member.
On the other hand, the applicant of the disclosure has ever obtained patents relating to a method and a device for manufacturing an interlocking-type flexible tube. The present disclosure is a resultant by researching the manner for forming the interlocking-type flexible tube so that a core member side on which the metal bank plate is wound is in a fixed state and configured to be taken as a workpiece side, rather than the past manner in which one side of the metal band plate on which the metal band plate is fed into the decoiler is taken as the workpiece side. Based on this, an interlocking type flexible tube with a diameter of continuously high efficiency and high precision is provided (see paragraph 0009, etc of the same patent literature).
Patent Literature 1: Japanese laid-open 11-344168;
Patent Literature 2: Japanese laid-open 2004-52810;
Patent Literature 3: Japanese laid-open 2007-30025;
Patent Literature 4: Japanese laid-open 08-218862; and
Patent Literature 5: Japanese patent 3686973.
The inventor considered the background and studied to provide an interlocked-type flexible tube with diameter dimension of continuously high efficiency and high precision based on the structure of a core member side as a workpiece side, i.e., to find an automatic controlling device, which can prevent springback even if the interlocked tube is shaped with a round, polygonal or oblong cross section, which can easily and precisely shape the interlocked tube in a non-loose manner without any rotation, and which can provide excellent operation efficiency.
In addition, there are other requirements for easily and efficiently shaping the interlocked tube. For example, the additional oil-applying device is not required to be arranged at a preceding stage of multistage roll-forming device, instead an upper portion of the multistage roll-forming device has an oil-applying function integrally so as to apply the oil efficiently. It is also required to improve an oiling agent, e.g., lubricating oil mixed with water may be used, so as to improve the operation efficiency and reduce the cost. In addition, for interlocked tube cutting device cooperating with the main body of the apparatus, it is required to form granular atomized slags during the cutting, and to remove these slags accumulated during the cutting efficiently.
An object of the present disclosure is to provide a manufacturing method for an interlocked tube and a manufacturing device therefor, which is an automatic formation device or an automatic formation system that sets an equipment operation time from a required manufacturing time per product during the manufacturing of tubes having a round, polygonal, or oblong cross-section. The tube may be easily and precisely shaped in a non-loose manner, so as to provide excellent machining performance when the interlocked tube is cut off and provide excellent operation efficiency for the manufacturing device itself.
In order to achieve the above object, as a method for manufacturing an interlocked tube, as described in solution 1, the interlocked tube is an interlocked tube with a round, polygonal or oblong cross-section, and shaped by bending a elongate metal band plate with a certain width into an S-shaped cross section and helically winding onto the metal band plate a winding core member in a way that two adjacent end portions thereof are engaged with each other by means of members for treating the metal band plate successively in accordance with instructions from a main computing-controlling member. The method for manufacturing the interlocked tube employs the following means: the main computing-controlling member configured to control actions of each member based on values calculated in accordance with product diameter (D), pitch (P), product length (L) and setting time (T) of the wound metal band plate, and to aggregate the values; a motor controlling member configured to perform treatment in accordance with instructions from the main computing-controlling member, and to perform three-axis synchronous control on a forming members system spindle motor III, a material conveying system roller motor II and a clamping device system cover motor V with the forming members system spindle motor III as a reference axis via a pulse instruction from the main computing-controlling member; and a clamping device configured to synchronously rotate in such a manner that the wound metal band cannot be loosened, and to clamp the metal band plate in a freely loosen or freely tighten manner. Further, the method for manufacturing an interlocked tube according to solution 2 is that the motor controlling member has a cutting member system pinch roller motor IV synchronously controlled based on the three-axis synchronous control. Further, the method for manufacturing an interlocked tube according to solution 3 is that the main computing-controlling member adds a desired correction value to a rotation speed of a motor system. Further, the method for manufacturing an interlocked tube according to solution 4 is that a pretreatment device cooperating with the main computing-controlling member comprises: a multistage roll-forming device configured to shape the tabular metal band plate extracted from a decoiler into a metal band plate with curved side portions; and an oil-applying device configured to apply an oily coating agent from an upper portion of the multistage roll-forming device, the oily coating agent being a lubricating oil mixed with water. Further, the method for manufacturing an interlocked tube according to solution 5 is that a cutting device cooperating with the main computing-controlling member is configured to receive instruction for absorbing slags and scraping out the accumulated slags. Further, the method for manufacturing an interlocked tube according to solution 6 is that the cutting device cooperating with the main computing-controlling member is configured to receive instruction of ejecting the air for cutting. Further, the method for manufacturing an interlocked tube according to solution 7 is that that the cutting device cooperating with the main computing-controlling member is configured to receive instructions for starting the cutting as in contact with the wound metal band plate, then departing from the wound metal band plate immediately so as to maintain a predetermined distance from the metal band plate, and then stopping the cutting.
As an apparatus for manufacturing an interlocked tube, as described in solution 8, the interlocked tube is an interlocked tube with a round, polygonal or oblong cross-section, and shaped by bending a elongate metal band plate with a certain width into an S-shaped cross section and helically winding the metal band plate onto a winding core member in a way that two adjacent end portions thereof are engaged with each other by means of devices for treating the metal band plate successively in accordance with instructions from a controlling device. The apparatus for manufacturing the interlocked tube comprises: the controlling device configured to control actions of each device based on values calculated in accordance with product diameter (D), pitch (P), product length (L) and setting time (T) of the wound metal band plate, and to aggregate the values; a motor system configured to perform treatment in accordance with instructions from the controlling device, and to perform three-axis synchronous control on a forming members system spindle motor III, a material conveying system roller motor II and a clamping device system cover motor V with the forming members system spindle motor III as a reference axis via a pulse instruction from the main computing-controlling member; and a clamping device configured to synchronously rotate in such a manner that the wound metal band cannot be loosened, and to clamp the metal band plate in a freely loosen or freely tighten manner. Further, the apparatus for manufacturing an interlocked tube according to solution 9 is that the motor system has a cutting member system pinch roller motor IV synchronously controlled based on the three-axis synchronous control. Further, the apparatus for manufacturing an interlocked tube according to solution 10 is that the controlling device adds a desired correction value to a rotation speed of the motor system. Further, the apparatus for manufacturing an interlocked tube according to solution 11 is that a pretreatment device cooperating with the controlling device is provided with: a multistage roll-forming device configured to shape the tabular metal band plate extracted from a decoiler into a metal band plate with curved side portions; and an oil-applying device configured to apply an oily coating agent from an upper portion of the multistage roll-forming device, the oily coating agent being a lubricating oil mixed with water. Further, the apparatus for manufacturing an interlocked tube according to solution 12 is that a cutting device cooperating with the controlling device is configured to receive instruction for absorbing slags and scraping out the accumulated slags. Further, the apparatus for manufacturing an interlocked tube according to solution 13 is that the cutting device cooperating with the controlling device is configured to receive instruction of ejecting the air for cutting.
Further, the apparatus for manufacturing an interlocked tube according to solution 14 is that the cutting device cooperating with the controlling device is configured to receive instructions for starting the cutting as in contact with the wound metal band plate, then departing from the wound metal band plate immediately so as to maintain a predetermined distance from the metal band plate, and then stopping the cutting.
According to the disclosure of solutions 1 and 8, the interlocked tube is an interlocked tube with a round, polygonal or oblong cross-section, and formed by bending the elongate metal band plate with a certain width into an S-shaped cross section and helically winding onto a winding core member in a way that two adjacent end portions thereof are engaged with each other. During the manufacturing of the interlocked tube, the motor controlling member performs three-axis synchronous control on a forming members system spindle motor III, a material conveying system roller motor II and a clamping device system cover motor V with the forming members system spindle motor III as a reference axis according to a pulse instruction from the main computing-controlling member while calculating in accordance with product diameter, pitch, product length and setting time, and the metal band plate is held by a clamping device that is disposed on the tip side of a winding core member and rotates in a synchronized manner so as to prevent loosening of the wound metal band plate, so it is able to easily and precisely shaping in an efficient manner.
According to the disclosure of solutions 2 and 9, the motor controlling member enables the cutting member system pinch roller motor IV to be synchronously controlled based in the three-axis synchronous control of solution 1 or 8, so it is able to further easily and precisely shaping in an efficient manner.
According to the disclosure of solutions 3 and 10, due to the rotation speed correction function, it is able to reduce the material of the tube or the sliding of shaping the tube or the affect of mechanical consumption, i.e., mechanical loss, etc, and it is able to adjust the rotation speed to become normal.
According to the disclosure of solutions 4 and 11, the oil-applying device is not required to be arranged at a preceding stage of multistage roll-forming device, instead an upper portion of the multistage roll-forming device has an oil-applying function, and the lubricating oil mixed with water is used as the coating agent, so it is able to improve the operation efficiency and reduce the cost.
According to the disclosure of solutions 5 and 12, the cutting device may be used to absorb the slags and scrape out the accumulated slags, so it is able to remove the slags completely.
According to the disclosure of solutions 6 and 13, the air for cutting, rather than the expensive inert gases (e.g., Ar) or CO2 used in the past, is supplied during the cutting, so it is able to reduce the cost.
According to the disclosure of solutions 7 and 14, the cutting device starts the cutting when it is in contact with the wound metal band plate, and then is separated therefrom immediately so as to maintain a predetermined distance from the metal band plate. As a result, it is able to maintain the best cutting condition and prevent from cutting incompletely.
The embodiments of the present disclosure will be described hereinafter in conjunction with the drawings.
That is, a half-finished interlocked tube 10 used as an exhaust tube for a vehicle or the like is obtained. An elongated, tabular metal band plate 10a with a certain width is bent into a curved metal band plate 10b, with a round, polygonal or oblong cross section, and then shaped into a curved metal band plate 10c which is wound helically. Then, the metal band plate 10c is cut into a predetermined length so as to obtain the half-finished interlocked tube 10 (also referred to as tube) formed of the following devices.
Therefore, during treatment, as shown in
Therefore, three-axis synchronous control of the material conveying system roller motor II for controlling the conveyance of the metal band plate, the forming members system spindle motor III for controlling the winding core member 17 for winding the metal band plate 10 as a tube, and the clamping device system cover motor V for controlling the clamping device 20 is performed by using a pulse instruction from the positioning unit, with the forming members system spindle motor III for controlling the winding core member 17 as a reference axis. Further, based on the above, the cutting member system pinch roller motor IV located below the cutting core member 18 is also controlled simultaneously. That is, according to this function, operation status of accelerating or decelerating the motor system I may control operation synchronously. Further, the above-mentioned treatments are not limited here, and may have various designs and variation according to the idea of the invention.
Moreover, the motor system I has a rotation speed correction function because, even if all shafts rotate in the same speed, conveyance may not be steady due to factors such as the material of the metal band plate 10 as a tube, and the sliding of shaping the tube or mechanical consumption, i.e., mechanical losses. As a result, for shafts except the reference shaft of the forming member system spindle motor III for controlling the winding core member 17, an additional rotation speed correction function is added for adjustment so as to enable the rotation speed to become normal. That is, a theoretical value for the rotation speed of the motor system I is calculated according to the shape data of a product, and the speed is corrected by “%” relative to the theoretical value. For example, when the rotation speed of the material conveying system roller motor II for controlling the conveyance of the metal band plate 10 as a tube is desired to drop by 30% as compared with that of the forming members system spindle motor III for controlling the winding core member 17 as a reference axis, the rotation speed of the roller motor is set to 70% (100%→70%), etc.
That is, the positioning unit of the main computing-controlling member performs calculation and issues a pulse instruction (start-stop) according to input product parameters (product diameter, pitch, product length, manufacturing tact), so that the material conveying system roller motor II can input a value calculated by the positioning unit plus a single correction value. Further, the forming member system spindle motor II performs action without correcting the value calculated by the positioning unit. Further, the clamping device system cover motor V can input the value calculated by the positioning unit plus the single correction value. Further, the cutting member system pinch roller motor IV can input the value calculated by the positioning unit plus the single value. Further, the cutting unit system unit motor VI can input the value calculated by the positioning unit plus the single correction value.
Further, an example is illustrated for reference as preliminary calculation.
Length [mm] of material necessary for one product=Product diameter [mm]×π×(product length [mm]÷pitch [mm])
Material conveying speed(theoretical value [mm/min](linear velocity))=Material length [mm]÷setting time [second]×60 [seconds]
Speed setting value [mm/min] of roller motor=Material conveying speed [mm/min]×roller rotation correction [%]
Speed setting value of spindle [rev/min]=Product length [mm] pitch [mm]÷setting time [second]×60 [seconds]
There is no correction for basic axis
Speed of JOG sets operating by m/min
Speed setting value [rev/min] of cover motor as clamping device 20=Product length [mm]÷pitch [mm]÷setting time [second]×60 [second]>clamping device rotation correction [%]
Speed setting value [mm/min] of pinch roller=material conveying speed [mm/min]×pinch roller rotation correction [%]
*Speed setting value [mm/min] of unit shifting=Advance speed [mm/min] of product×unit shifting correction [%]=Product length [mm]÷setting time [second]×60 [seconds]×unit shifting correction [%]
Herein, configuration and actions of the devices are described in conjunction with
In addition, an upper portion of the multistage roll-forming device 14 in the pretreatment device 13 is integrally provided with the oil-applying device 15 for applying an oily coating agent, which is a lubricating oil mixed with water, onto a back surface of the successively formed curved metal band plate 10b.
A main body 11 of the apparatus helically winds the curved metal band plate 10b extracted from the pretreatment device 3 onto a winding core member 17 (see left side in
In addition, a guiding device 19 is provided at the bottom of the winding core member 17. The guiding device 19 has winding guiding rollers 19a . . . provided on an axial line thereof, so that the curved metal band plate 10b in engagement with each other slides at a peripheral of the winding core member 17, so as to be wound helically. In
The winding core member 17 is driven to rotate by means of a motor 24 connected to the main body 11 of the apparatus, so as to wind the curved metal band plate 10b in a way that the end portions thereof are engaged with each other. In addition, a cutting core member 18 is provided in front of the winding core member 17, and an opening 18a (as shown in
Moreover, clamping device 20 for clamping the helical, metal band plate 10b wounded on the winding core member 17 (direction B in
The movable plasma cutting device 21 is provided at an upper portion of the cutting core member 18. The plasma cutting device 21, although being movably arranged at the upper portion of the cutting core member 18 in a unit shifting manner as mentioned above (not shown), is provided with a cutting member 21a at its front end for producing a plasma arc. The air for cutting is ejected from a cutting nozzle at a front opening of the cutting member 21a so as to heat and melt the helical, metal band plate 10b made of stainless steel, thereby to cut it of instantaneously.
For the discharge action of the cutting member 21a, as shown in
In this situation, the cutting member 21a discharges while an electrode is in contact with the helical metal band plate (workpiece), after that, the cutting is performed while maintaining an appropriate distance between the electrode and the helical metal band plate (workpiece), and then the current is switched off so as to stop the cutting, as a result, it is able to prevent from cutting incompletely, or to prevent an excessively-melted cut portion and a deformation as the discharge is not stopped after the cutting.
In addition, various heat sources may be applicable, and in this embodiment, it is appropriate to employ the cutting used air with a high-temperature plasma arc to heat and melt and then cut off instantaneously. As a result, it is unnecessary to use the expensive inert gases e.g., Ar) or CO2, as those used in the prior art, and the cost will be reduced.
In
As mentioned above, the slag recovering device 22 includes the tube 22a, the scraping device 22b and a discharge path 22c. The opening 18a of the cutting core member 18 for extracting the slags produced during cutting is provided at a position of the cutting core member 18 opposite to the cutting portion 21a to serve as the slag receiving port for receiving the slags produced during the cutting. The tube 22a is used to remove the slags absorbed from the opening 18a to the outside, the scraping device 22b is used to scrape the slags, and the discharge path 22c is used to remove the scraped slags.
In addition, a movement pitch for one rotation amount of the winding core member 17 and the cutting core member 18 (which, however, does not rotate itself), e.g., a distance between the starting position a for cutting and the end position b for cutting or a cutting time, is calculated as product diameter×pitch×product length×setting time. The term “setting time” represents a production time (a setting tact) for each product. By setting and executing the setting tact, it is able to ensure the planned, stable production.
A workpiece conveyance device 23 is provided at a final stage of the main body 11 of the apparatus, and it can move toward a Y-axis (up and down) and an X-axis (right and left). A workpiece clamping body 23a is provided at a front end of the workpiece conveyance device 23, so as to clamp the half-finished interlocked tube 10 which is cut into a predetermined size and convey it to a recovering case 23b at a conveyance region. In addition, the structure of the workpiece conveyance device 23 or the workpiece clamping body 23a is not particularly defined, as long as it can function as mentioned above.
The structure of an electrical system according to the present disclosure will be described hereinafter in conjunction with
As mentioned above, the main computing-controlling member 101 performs the calculation and control for the actions of the members connected to the apparatus. The action calculation is performed in accordance with the product diameter, pitch, product length, setting time (setting tact), and the position status of the action of the members.
Based on input information from the decoiling member 110 when the actions are performed or the actions performed by the members in the apparatus, the bending treatment controlling member 102 sends instruction in accordance with the instructions from the main computing-controlling member 101, so that the tabular metal band plate 10a extracted from the decoiler 12 is bent in the pretreatment device 13 into the curved metal band plate 10b.
The oil-application controlling member 103 receives the instruction when an action signal is input along with the operation of the bending treatment controlling member 102, so that the coating agent, e.g., the lubricating oil mixed with water, is applied onto a back surface of the curved metal band plate 10b in the multistage roll-forming device 14.
When the curved metal band plate 10b is extracted from the pretreatment device 13 and fed into the main body 11 of the apparatus, instructions are input from the main computing-controlling member 101 to the motor controlling member 104, so as to operate the winding core member 17.
By sending instruction signal to the motor controlling member 104, the winding core member 17 starts to rotate, thereby to form the helically wound curved metal band plate 10c. In case the curved metal band plate 10b fed by the multistage roll-forming device 14 is superposed on the curved metal band plate 10c that has been wound into a helical form, the winding guiding roller 19a will be damaged. In order to avoid this situation, a load on the winding guiding roller 19a will be measured, and when the measured value is greater than a predetermined value, the winding treatment controlling member 105 will send signal to the main computing-controlling member 101 to stop the apparatus.
When the winding core member 17 and the cutting core member 18 (which, however, does not rotate itself) start to rotate, the clamping device 20 will act to rotate as well. Based on a value calculated in accordance with the product diameter, pitch, product length and setting time (setting tact), a filling instruction signal from the clamping member 20 will be output to the front portion of the curved metal band plate 10b through the instructions from the main computing-controlling member 101.
When the helically wound curved metal band plate 10c reaches a predetermined length, the main computing-controlling member 101 will send instruction signal to the cutting controlling member 107 in accordance with the signal from the plasma cutting device 21. At this time, the cutting member 21a of the plasma cutting device 21 moves along with the curved metal band plate 10c which is helically wound in accordance with the instruction from the main computing-controlling member 101 in parallel to the direction of winding one pitch for one revolution. By this action, the helically wound curved metal band plate 10c is cut in the direction perpendicular to axial direction instead of being cut in helical direction. In addition, the cutting member 211a receives instruction to perform the actions with respect to the helically wound curved metal band plate 10c to be kept at the initial position, to be contacted, to be kept at a predetermined distance, and to be kept at the initial position again. As a result, the cutting is maintained in a well state.
Then, the slag controlling member 108 operates in accordance with the instruction from the main computing-controlling member 101, and inputs instruction signal for absorbing and scraping the slags which have been cut in the slag recovering device 22.
Next, a signal is input into the workpiece conveyance member 109 by the instruction from the main computing-controlling member 101. The workpiece clamping body 23a starts to operate in accordance with the instruction, maintains the half-finished interlocked tube 10 that has been cut, and releases the clamping member 20. The clamping member 20 and the winding core member 17 will move backward so as to be withdrawn from the interlocked tube 10. Then, the workpiece clamping body 23a will operate to convey the interlocked tube onto the workpiece receiving member 23b.
In addition, reference number 111 represents an inputting-displaying member which may include, as expected, an appropriate unit such as an inputting unit or an image displaying unit.
So, in this embodiment, when shaping the tube with a round cross section or a polygonal or oblong cross section in a non-loose, precise and easy way, because the clamping device synchronously rotates with the wound metal band plate, for example, even an interlocked tube is round or oblong, it is able to easily and precisely shape a tube in a rotatable, non-loose, non-twisting and efficient manner. Further, when the automatic formation device (an automatic control unit) obtains a predetermined (desired) average setting tact, i.e., a production time, for each product manufactured, it is calculated according to product diameter (D), pitch (P), product length (L) and setting time (T). Meanwhile, the motor control member performs the three-axis synchronous control to the forming members system spindle motor III, the material conveying system roller motor II and the clamping device system cover motor V with the forming members system spindle motor III as a reference axis in accordance with the pulse instruction from the main computing-controlling member, and a clamping device that is disposed on the tip side of a winding core member rotates in a synchronized manner so as to prevent loosening of the wound metal strip plate, so it is able to control automatically in an easy, precise and efficient way and ensure planned, stable production.
In addition, as the cutting member system pinch roller motor IV is controlled synchronously according to the three-axis synchronous control, it is able to further control automatically in an easy, precise and efficient way and ensure planed, stable production.
In addition, as the motor system has an ability to correct the rotation speed, even if all shafts rotate in the same speed, conveyance may not be steady due to factors such as the material of the metal band plate 10 as a tube, and the sliding of shaping the tube or mechanical consumption, i.e., mechanical losses. So, it is able to adjust the rotation speed to become normal.
In addition, due to the other requirements to easily and efficiently shape the interlocked tube, the oil-applying device is not required to be arranged at a preceding stage of the multistage roll-forming device, instead an upper portion of the multistage roil-forming device has an oil-applying function integrally so as to work efficiently. Meanwhile, the coating agent is also improved, e.g., the lubricating oil mixed with water may be used in order to improve the operation efficiency and reduce the cost. Further, when the interlocked tube cooperating with the main body of the apparatus is cut off, the slags produced belong to granular atomized slags; besides, the slags accumulated during the cutting will be removed efficiently.
Hence, according to the present invention, it is able to obtain the interlocked tube by easily and precisely shaping a tube with a round cross section or a polygonal or oblong cross section in a non-loose manner, so as to provide excellent machining performance when the interlocked tube is cut off, and meanwhile it is able to shape the interlocked tube automatically, so as to provide excellent operation efficiency for the apparatus itself. As long as the above-described actions can be performed, and are not limited to the disclosure of the invention, all kinds of variation, design and modification can be made.
In addition, as for other application of the interlocked tube, it may be applied to a spiral duct of an air conditioner, etc by winding a steel plate into a spiral liner and winding a steel wire into a spiral tube.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2014-75769 | Mar 2014 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2015/056758 | 2/27/2015 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2015/137261 | 9/17/2015 | WO | A |
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| 4672549 | Saxton | Jun 1987 | A |
| 4724596 | Pavlyak | Feb 1988 | A |
| 20110277525 | Curtis | Nov 2011 | A1 |
| 20120013281 | Watanabe | Jan 2012 | A1 |
| 20150040372 | Suzuki | Feb 2015 | A1 |
| Number | Date | Country |
|---|---|---|
| 102334277 | Jan 2012 | CN |
| 2 962 777 | Jan 2016 | EP |
| 56-126025 | Oct 1981 | JP |
| 61-209738 | Sep 1986 | JP |
| 1-254384 | Oct 1989 | JP |
| 6-344025 | Dec 1994 | JP |
| 7-16658 | Jul 1995 | JP |
| 8-218862 | Aug 1996 | JP |
| 10-166046 | Jun 1998 | JP |
| 11-254384 | Sep 1999 | JP |
| 11-344168 | Dec 1999 | JP |
| 2000-312973 | Nov 2000 | JP |
| 2004-52810 | Feb 2004 | JP |
| 3686973 | Jun 2005 | JP |
| 2007-30025 | Feb 2007 | JP |
| 5488946 | Apr 2014 | JP |
| WO-9815367 | Apr 1998 | WO |
| 2010082058 | Jul 2010 | WO |
| 2014132455 | Sep 2014 | WO |
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| Number | Date | Country | |
|---|---|---|---|
| 20160175904 A1 | Jun 2016 | US |
