Patent Application
20230415214
The present application claims priority to Korean Patent Application No. 10-2022-0078652 filed Jun. 28, 2022, the entire contents of which is incorporated herein for all purposes by this reference.
The present disclosure relates to a pocket flange forming device for a duct. More particularly, the present disclosure relates to a pocket flange forming device for a duct, the pocket flange forming device being capable of forming pocket flanges bi-directionally according to sizes of the pocket flanges with a plate for manufacturing the duct entering the forming device and passing through a plurality of forming rollers thereof.
In general, in a ceiling of a building where an air conditioner is equipped, a duct through which cooling and heating fluids discharged from the air conditioner flow is installed. Typically, the duct is manufactured by molding galvanized steel plates (tin) having a certain thickness in a bending method and then combining the molded objects.
Furthermore, the duct has a structure in which a plurality of unit ducts are assembled by being connected to each other with bolts and nuts, and is used as a pipe of a ventilation facility for air circulation. Specifically, recently, a duct structure in which the unit ducts are connected to each other with flanges having a predetermined shape and strength of a connection portion therebetween is reinforced has been developed.
For example, in the “Flange of duct” disclosed in Korean Utility Model Publication No. 0248233 of the present applicant, a structure of a flange integrally formed to be bent at both ends of a duct and reinforced in rigidity and strength is shown.
Furthermore, in order to compensate for a problem of the duct flange as described above, the present applicant registered Korean Patent No. 10-0597567 (Title: Pocket flange of a duct, date of registration: Jun. 29, 2006, hereinafter which is referred to as “patent document”).
Each of the pocket flanges in the patent document as described above has a coupling part vertically bent and extending from a duct, and a bent part extending to be bent again from the coupling part toward the duct, and an end extending from the bent part is disposed on a bottom surface, and while the end extending from the bent part is in contact with the duct, the duct is bent to cover an edge portion and an upper surface of the end, and the duct is bent reversely to be compressed together. Therefore, since a welding process is not included in the manufacturing process, consumables or power required for the welding process are unnecessary, so the economic efficiency is high and the manufacturing process is simple, and since there is no corrosion caused by welding or shearing, the flanges are not separated from the duct and do not become damp, so the durability thereof is excellent, and each of the flanges has a large thickness at an edge of the end, so the structural strength is increased.
Molding of the pocket flanges is performed by bending, folding, and compressing edges of the plate sequentially through a plurality of the forming rollers.
For example, looking at the related art for a similar molding device for molding of the pocket flange of a duct as described above, Korean Patent No. 10-1888294 (Title: Rainwater drainage molding equipment for roofs of buildings, date of registration: Aug. 7, 2018) was disclosed.
In the process, the metal plate is bent while opposite side portions of the plate pass through the plurality of molding rollers so that a rainwater drainage can be manufactured while a processing time is sharply reduced with one molding device.
Similar to the bending-molding method for a plate as described above, molding of a pocket flange for a duct may be performed by uniformly molding pocket flanges like the related art through a plurality of forming rollers disposed longitudinally, but the pocket flanges were manufactured by moving the plate in one direction, and after completing molding of one length side portion of the plate, and then inserting and molding the opposite side portion into the molding device in the same manner as described above.
Therefore, manufacture of a molding takes a lot of time, and molding devices with different molding sizes are required in order to mold pocket flanges with different sizes for manufacturing a duct, so there is a problem in that the productivity of a product according to design and manufacturing, installation, and operation of the molding device should be considered.
The present disclosure is invented to solve the problems occurring in the related art, and is intended to provide a pocket flange forming device for a duct, the forming device being configured to form pocket flanges bi-directionally according to different sizes while a plate enters the forming device and passes through a plurality of forming rollers for duct manufacturing.
According to the present disclosure to achieve the above described objective, there may be provided a pocket flange forming device for a duct, the pocket flange forming device being configured to mold pocket flanges, which may be connecting portions of a duct, on longitudinal edge portions at opposite ends of a plate made of a rectangular metal plate, through a sequential forming process,
the forming device including:
According to the present disclosure, the gap adjusting part may include:
According to the present disclosure, each of the supports corresponding to each other of the forming molding unit may include: one or more shaft fixing stands continued in a longitudinal direction, and provided to be vertically adjustable at upper and lower portions at opposite sides of the supports, and a first roller shaft rotatably provided to each of the shaft fixing stands and coupled to, at opposite ends thereof, the forming rollers, a second roller shaft rotatably provided on the supports, and coupled to, at opposite ends thereof, forming rollers to match with the forming rollers on the first roller shaft for forming molding, a driving gear coupled to each of the first roller shaft and the second roller shaft and configured to allow engagement rotation driving, a ring gear connected to one of the supports and another support while being located therebetween, and configured to be transmitted with power from the second rotary driving unit to rotate the forming molding unit entirely, and a roller power transmission part provided at second roller shafts at the supports at the opposite sides based on the ring gear and configured to rotate the second roller shafts at the supports in the same rotating direction.
According to the present disclosure, the roller power transmission part may include a sprocket wheel coupled to the second roller shaft at the supports at opposite sides based on the ring gear and a chain connecting the sprocket wheel to another sprocket wheel.
According to the present disclosure, the ring gear may include:
According to the present disclosure, the forming rollers may include:
According to the present disclosure, the first rotary driving unit may include:
According to the present disclosure, the first gear driving part may be configured
According to the present disclosure, the second rotary driving unit may include:
According to the present disclosure, the transfer unit may include:
According to the present disclosure, the elevation stand unit may include:
According to the present disclosure, the fixation unit may be
According to the present disclosure, the pocket flange forming device is configured as follows. When the plate enters the forming molding unit provided at the opposite sides of the forming device while being seated on the transfer unit, the pocket flanges serving as duct connecting portion are formed on the longitudinal edges on the opposite sides of the plate through the forming-molding method such as bending, folding, and compressing in addition to transferring, and the forming molding unit is rotated by 180 degrees to match with molding positions of the forming rollers of the left and right forming molding unit, and a gap between the forming molding units is set by the gap adjusting part, so that the pocket flanges having the same size or different sizes at the opposite sides thereof can be molded at the same time. Accordingly, the production performance and productivity of the pocket flanges serving as duct connecting portions can be sharply enhanced.
Hereinbelow, the present disclosure will be described in detail with reference to accompanying drawings.
All terms or words used in the specification and claims have the same meaning as commonly understood by one of ordinary skill in the art to which inventive concepts belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Therefore, the embodiments described in the specification and the configurations shown in the drawings are merely examples and do not exhaustively present the technical spirit of the present disclosure. Accordingly, it should be appreciated that there may be various equivalents and modifications that can replace the embodiments and the configurations at the time at which the present application is filed.
According to the present disclosure, a forming device will be described with reference accompanying.
As shown in
As shown in
In other words, the gap adjusting part 110 may perform the gap adjustment of the forming molding unit 140 according to the width of the plate 1 so as to achieve molding of the pocket flanges 1a.
The stands 120 respectively located on upper left and right portions of the base 101 are in parallel to each other in beam shapes and are provided to be movable by the gap adjusting part 110 provided from an upper portion of the base 101.
The fixing stand 130 is disposed at each of front and rear sides of the upper left and right portions of the stand 120 in standing shapes to correspond to another fixing stand.
The forming molding unit 140 is a main part that is rotatably provided between the fixing stand 130 and another fixing stand 130 that are located at the upper front and rear sides of the stand 120, and include a plurality of forming rollers R that are continuously provided at opposite sides of the supports 141 corresponding to each other, and form pocket flanges 1a on longitudinal edges at opposite sides of the plate 1 entering between upper and lower forming rollers, by sequentially performing bending, folding, and compressing molding.
More specifically, as shown in
The driving gears 145 coupled onto the first roller shafts 143 and the second roller shafts 144 are engaged with an idle gear 148 installed on an idle shaft 149 of which opposite ends are shaft-installed in the support 141 to transmit rotary power.
As shown in
In other words, each of the shaft fixing stands 142 is configured to adjust a gap below and above the support 141 by adjusting gaps between the forming rollers R on the first roller shafts 143 and the forming rollers R on the second roller shafts 144 penetrating through and supported by the support 141 to be directly rotatable. The shaft fixing stand 142 is configured to set a gap by adjusting the forming rollers R on the first roller shafts 143 on the basis of the forming rollers on the second roller shafts 144.
Describing the forming rollers R, the forming rollers are rollers in which portions molded at outside portions thereof are slightly different in shape to sequentially bend and fold the longitudinal edges of the plate 1 passing through each of the forming rollers, and to compress folded portions.
The forming rollers R are respectively coupled to opposite ends of each of the second roller shafts 144 rotatably installed in the support 141, and the first roller shafts 143 on the shaft fixing stands 142 are installed in parallel to the second roller shafts 144 and to the shaft fixing stands 142 of each of the supports 141. One forming roller is coupled to a first end of each of the first roller shafts 143 and installed to be closer to the forming rollers R provided on the second roller shafts 144.
In other words, based on the drawings, the forming rollers R coupled to the first roller shafts 143 of the upper shaft fixing stands 142 and the forming rollers coupled to the first roller shafts 143 of the lower shaft fixing stands 142 are disposed to be misaligned from each other by 180 degrees to correspond closely to the forming rollers provided at the second roller shafts 144.
The center forming rollers provided at the second roller shafts 144 may bent the plate by matching with the upper forming rollers provided the first roller shafts 143 of the upper shaft fixing stands or the lower forming rollers of the lower shaft fixing stands.
When a set of the center forming roller and the upper forming roller that are disposed at a first side is referred to as a first forming roller R1 and a set of a center forming roller and a lower forming roller that are disposed at a second side is referred to as a second forming roller R2, the first forming roller and the second forming roller have different sizes. In other words, the upper forming roller and the lower forming roller are disposed to be misaligned by 180 degrees, and have different diameters. Furthermore, the center forming rollers disposed at opposite sides also have the sizes different from each other. When the upper forming roller is larger than the lower forming roller, the center forming roller matches with the lower forming roller, so the center forming roller at the upper forming roller is formed larger than another center forming roller.
As shown in
Conventionally, when molding of flanges having different sizes is performed, replacement of the forming rollers is required, but according to the present disclosure, flanges having different sizes can be molded by rotating the forming rollers by 180 degrees. Therefore, work efficiency can be improved.
As shown in
The roller power transmission part 147 includes sprocket wheels W coupled to the second roller shafts 144 at the support 141 opposite to each other based on the ring gear 146 and a chain C connecting the sprocket wheels W to each other. As described above, the roller power transmission part 147 is provided to the support of the three parts, and serves as one power transmission medium to transmit rotary power between the supports.
As shown in
As shown in
The first gear driving parts 153 are configured to perform power transmission by engagement between bevel gears G1 and spur gears G2 engaged with the bevel gears G1, and the bevel gears G1 being installed on second roller shafts 144 at start and end positions of the supports 141 where the plate enters, is molded, and then is discharged, among the output shafts 152a and the second roller shafts 144 of the forming rollers R of the forming molding unit 140.
As shown in
The driving gear 163a and the driven gear 163b have diameter portions corresponding to the ring part of the ring gear to achieve supporting of rotation of the ring gear and engaged rotation with the ring gear at the same time so as to rotate the ring gear with engaged rotation with the driven gear.
As shown in
The transfer unit 170 is provided to match a height level from the base 101 to the forming rollers R disposed in the forming molding unit 140, and includes a conveyor 171 transferring the plate 1, a pressure roller 172 provided to be spaced apart from an upper portion of the conveyor 171 to pressurize and guide an upper portion of the plate 1 seated and transferred on the conveyor and a pressure roller support 173, and a conveyor driving part 174 driving the conveyor 171 in one direction.
The pressure roller 172 is the weight and the pressure roller support 173 is connected to each of opposite shaft ends of the pressure roller, and a roller 173a is provided on one end of the pressure roller support 173 so that the roller 173a is seated and rollable on a rail 175 provided at an upper portion of the transfer unit 170.
In other words, the pressure roller 172 presses an upper surface of the plate 1 entering an upper surface of the conveyor 171 and is moved together with the plate while pressing the plate to a position where the plate finally passes the forming device, and is configured to be returned to an initial state thereof along the rail when the plate that has completed in pocket flange molding is finally discharged.
The rail 175 is installed in an attached manner at a structure installed in an arc shape from the base 101.
As shown in
The guide rods 183 are configured to be raisable and lowerable in response to raising and lowering of an operation rod of the hydraulic cylinder 182 while supporting the elevation support block 184 from the support plate 181 at the same time.
As shown in
An operation according to manufacture of a pocket flange for a duct using the forming device according to the present disclosure configured as described above will be described as follows.
First, according to the present disclosure, the forming device 100 is set at the forming molding unit 140 installed at the opposite ends of the forming device 100 to match with a size of a pocket flange 1a to be processed on the opposite ends of the plate 1 in a molding method.
The setting of the forming molding unit 140 is configured to use the gap adjusting part 110 to set forming rollers to form the pocket flanges 1a having correspond sizes, among the forming rollers R of the opposite forming molding unit.
In other words, after setting is configured whether the pocket flanges 1a formed on the opposite side portions of the plate 1 will be molded into the same standard or the pocket flanges 1a on either side will be molded into different sizes, the pocket flanges 1a are molded.
In addition to the setting of the forming molding unit 140, the gap adjusting part 110 selects the forming rollers R disposed in a row on the opposite sides of the forming molding unit on the basis of the molding size.
The gap adjusting part 110 adjusts a gap between the support with the forming molding unit 140 to match with a width of the plate 1, and adjustment is performed by operating the second driving motor 111 installed on the base 101.
A first end of the gap adjusting part 110 is connected to an output shaft end of the second reducer 112 to which power transmission is performed through the second reducer 112 connected to the second driving motor 111, and a second end thereof passes through a side surface of the stand 120 to rotate the transfer screw shaft 113 rotatably supported on the base 101.
As the transfer screw shaft 113 is rotated, the guide 115 coupled to the guide rail 114 may be moved leftward or rightward.
Accordingly, a gap between the forming molding unit 140 and another forming molding unit 140 that are rotatably installed on the fixing stands 130 at the stands 120 disposed on the upper left and right portions of the base 101 can be adjusted to match with the width of the plate 1 for molding a duct flange part.
As described above, in the state when gap adjustment of the forming molding units 140 is completed through the gap adjusting part 110, positions of the forming rollers R at the forming molding units 140 are set.
At this point, position setting of the forming rollers R means that forming rollers R matching to mold the pocket flanges 1a having the corresponding sizes, among forming rollers R respectively coupled to one end of each of the first roller shafts 143 disposed and installed at the supports 141 of the forming molding unit 140 and one end of each of the second roller shafts 144, are adjusted to be disposed on positions continuously arranged in a longitudinal direction of the support 141.
In other words, in the supports 141 of the forming molding unit 140, which correspond to each other, each of the forming rollers R of the first roller shafts 143 at the shaft fixing stands 142 provided to be vertically adjusted on the upper and lower side portions at the opposite sides of the supports 141 and each of the forming rollers R of the second roller shafts 144 rotatably installed on the support 141 are disposed in pair in one direction.
This setting allows the opposite longitudinal edges of the plate 1 to enter the forming molding units 140 facing each other in one direction and the pocket flanges 1a having the corresponding sizes to be molded through the plurality of upper and lower forming rollers R facing each other.
With respect to the forming rollers R disposed into pair, the shaft fixing stands 142 are guided to depressed portions provided on longitudinal edges of the support 141, and a gap thereof is adjusted at the upper and lower portion of the support 141 by a degree of fastening between a fastening bolt, nut, and compression spring, so that a gap between the forming rollers R on the first roller shafts 143 and the forming rollers R of the second roller shafts 144 penetrating through and supported on the support 141 to be directly rotatable can be adjusted.
Each of the forming rollers R of the forming molding unit 140 has a structure in which rotary driving is implemented as the driving gears 145 coupled to the first roller shafts 143 and the second roller shafts 144 are engaged with each other, in order to located the forming rollers R matching with the corresponding sizes, the forming molding unit 140 is entirely rotated by 180 degrees.
Rotation change of 180 degrees of the forming molding unit 140 is changed in position by the second rotary driving unit 160 installed on the stand 120.
Rotation of 180 degrees of the forming molding unit 140 is performed by the second rotary driving unit 160 installed on the stand 120.
The second rotary driving unit 160 is configured such that, when the first driving motor 161 installed on the stand 120 is driven, the power transmission shaft 162 connected to the shaft of the first driving motor 161 rotates the driving gear 163a of the second gear driving part 163, and the ring gear 146 at the forming molding unit 140 engaged with the driving gear 163a is rotated while driven gears 163b disposed at one side of the driving gear 163a into an arc shape are engaged with the gear part 146b of the ring gear 146.
Each of the driven gears 163b engaged with the driving gear 163a has a diameter portion 163b-1 that is in close contact with an outer circumferential portion of the ring part 146a of the ring gear 146. The diameter portion 163b-1 is provided to allow the engaged rotation between the gear part, the driving gear, and the driven gear in addition to support of rotation of the ring gear 146, at the same time, and to allow the ring gear 146 to be smoothly rotated.
In other words, rotation of the ring gear 146 through the second rotary driving unit 160 as described above is changed at a position of 180 degrees so that a forming roller R can be located to a corresponding position.
In the state in which a molding position for the corresponding size is changed as the forming molding unit is rotated by 180 degrees, as the forming molding unit is fixed by the fixation unit 190 installed on the fixing stand 130 rotatably supporting the forming molding unit 140, and the lower portion of the forming molding unit 140 is supported by the elevation stand unit 180 installed on the stand 120 installed at a position spaced apart from the lower portion of the support 141 of the forming molding unit 140, 180 degrees rotation setting of the forming molding unit is completed.
The elevation stand unit 180 is configured such that, the elevation support block 184, to which the operation rod of the hydraulic cylinder 182 on the support plate 181 securely installed on the stand 120 and the guide rods 183 penetrating and supported on the support plate at the plurality of points are connected, is lowered in the rotated stated of the forming molding unit 140 and the elevation support block 184 is raised to support the lower portion of the support 141 in the rotation completion state of the forming molding unit 140 as described above, so that sagging of the support relatively long is prevented.
The fixation unit 190 installed on the fixing stand 130 is securely installed at the supports 141 at the front end side and the rear end side where the plate 1 enters and is discharged, among the supports 141 of the forming molding unit 140 rotated by 180 degrees, and the plurality of fixing blocks 191 are provided at the upper and lower portions of each of the fixation units, and in the state in which the rotation plate 193 having the sensor detection stands 192 is rotated by 180 degrees together with the forming molding unit, the fixing cylinders 194 installed on the upper portion of the fixing stand 130 on the stand 120 are operated a signal of the detection sensor 195 that detects the sensor detection stands 192.
The fixing cylinders 194 include the pair of fixing cylinders and operation rods of the fixing cylinders are moved forward at the same time, and rotation of the forming molding unit 140 is prevented as the operation rods are operated to be inserted into the fixing blocks 191.
As described above, when all settings for forming molding are completed, for molding of the pocket flanges 1a of a duct, the plate 1 enters the forming device 100 through the transfer unit 170 disposed between the forming molding units 140 of the forming device 100.
The plate 1 enters the forming device by being seated on the upper surface of the conveyor 171 with operation of the conveyor driving part 174 of the transfer unit 170 and simultaneously passes through the forming rollers of the forming molding units disposed at the opposite sides and a multistage work such as bending, folding, compressing, etc. can be sequentially performed.
At this point, the upper surface of the plate 1 is pressurized by the pressure roller 172, which is installed to be spaced apart from the upper portion of the conveyor 171 and pressurizes and guides the upper portion of the plate 1 transferred in a seated state on the conveyor 171, while the roller at the pressure roller support 173 is moved along the rail.
As the plate passing between the forming rollers disposed at the opposite sides passes through the cut groove parts 146d of the ring gear, molding continues.
The forming rollers R installed at each of the forming molding units are rotated by driving the main driving motor 151 constituting the first rotary driving unit 150 of the forming device of the present disclosure with power transmission through the first gear driving parts 153 connected to the output shafts 152a at the opposite sides of the first reducers 152 connected to the main driving motor 151.
The first gear driving parts 153 is configured to perform power transmission by mutual engagement between the bevel gears G1 and the spur gears G2 engaged with the bevel gears G1, and the bevel gears G1 being installed on second roller shafts 144 at start and end positions of the supports 141 where the plate enters, is molded, and then is discharged, among the output shafts 152a and the second roller shafts 144 of the forming rollers R of the forming molding units 140.
The driving gears 145 are coupled to the first roller shafts 143 and the second roller shafts 144 to which the forming rollers R are coupled. As the driving gears 145 are engaged with each other and are rotated together, the forming rollers installed one support 141 are rotated.
The driving gears 145 are engaged with the idle gear 148 installed on the shaft of which opposite ends are shaft-installed at the support 141 to transmit rotary power.
In addition, power transmission between one support and another support is performed through the roller power transmission part 147, and power is transmitted through connection between the sprocket wheels W coupled to the second roller shafts 144 of the supports 141 at the opposite sides based on the ring gear 146 and the chain C connecting the sprocket wheels to each other. Accordingly, in addition to rotation driving of all the forming rollers, molding of the plate passing through the forming rollers is performed.
In addition to the forming molding, when molding of the plate 1 moved by the transfer unit 170 is completed and is separated from the transfer unit, the pocket flange molding is completed on the longitudinal edges at the opposite sides of the final plate, and the plate is cut to match with a size of a duct made into a square shape to form the duct having the pocket flanges as connecting portions at the opposite ends of the duct.
Referring to
In order to mold the large pocket flanges, as shown in
As the ring gear 146 is rotated by 180 degrees, the forming molding unit may change the positions of the upper and lower first roller shafts 143 from each other on the basis of a center shaft of the rotation plate 193 interconnected to the fixing stand 130, i.e., the second roller shaft 144 of the forming molding unit.
In other words, when the position setting of the forming rollers at the opposite sides is changed from the outside forming rollers to the inside forming rollers based on the drawings, the forming device is switched into large pocket flange molding manufacture as described above to produce products.
Although the present disclosure is described with reference to specific items such as specific structural elements, to merely some embodiments, and to drawings, such specific details disclosed herein are merely representative for purposes of helping more comprehensive understanding of the present disclosure. The present disclosure, however, is not limited to only the example embodiments set forth herein, and those skilled in the art will appreciate that the present disclosure can be embodied in many alternate forms.
Accordingly, the present disclosure is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments that may be included within the spirit and scope of the present disclosure as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2022-0078652 | Jun 2022 | KR | national |
