Edge rolling device and vehicle manufacturing system

Abstract

The utility model provides an edge rolling device and a vehicle manufacturing system, and relates to the technical field of vehicle manufacturing, in particular to the technical field of vehicle body metal plate manufacturing. According to the specific scheme, the binding device comprises a working platform and a pressing mechanism, the pressing mechanism is arranged on the working platform and used for pressing a workpiece on the working platform, and a workpiece containing area is arranged on the working platform; the pressing mechanism comprises a pressing support and a plurality of pressing assemblies, and the multiple pressing assemblies are arranged on the edge of the pressing support. The pressing assembly comprises a driving air cylinder connected to the pressing support and a pressing component connected to the driving air cylinder, and the driving air cylinder is used for driving the pressing component to apply force towards the edge of the workpiece containing area. The whole binding device is light in weight, the binding device can conveniently switch storage positions, and rapid and random switching of multiple vehicle types is achieved; the vehicle model investment is low; the design and processing period is shortened, the subsequent debugging workload is reduced, and the occupied area is small.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile manufacturing, and in particular to the technical field of automobile body sheet metal manufacturing. Background Art

[0002] When manufacturing body sheet metal, especially when manufacturing outer covering parts, the manufacturing process of large-angle aluminum rolling is widely used. This manufacturing process needs to be divided into two processes: the first sequence: the edge is pushed to 105 degrees by the angle pushing mechanism of the edge-wrapping machine; the second sequence: the edge is pressed to 0 degrees by the pressing mechanism of the edge-wrapping machine, or by the robot rolling. In the prior art, the edge-wrapping machine used in the first sequence is huge and bulky, and cannot meet the needs of switching warehouses during vehicle trial production. Summary of the invention

[0003] The present invention provides a lightweight hemming device and a vehicle manufacturing system.

[0004] According to one aspect of the present disclosure, a rolling device is provided, which includes a working platform and a clamping mechanism, wherein the clamping mechanism is arranged on the working platform and is used to clamp a workpiece on the working platform, and a workpiece placement area is provided on the working platform; the clamping mechanism includes a clamping bracket and a plurality of clamping assemblies, and the plurality of clamping assemblies are arranged on the edge of the clamping bracket; the clamping assembly includes a driving cylinder connected to the clamping bracket and a clamping member connected to the driving cylinder, and the driving cylinder is used to drive the clamping member to apply force toward the edge of the workpiece placement area.

[0005] In this solution, the hemming device applies a clamping force to the workpiece by arranging a driving cylinder on the clamping bracket, so that the overall weight of the hemming device is reduced, the hemming device is convenient for switching storage positions, and multiple vehicle models are switched quickly and randomly; the vehicle model investment is low; the design and processing cycle is shortened, the subsequent debugging workload is reduced, and the footprint is small.

[0006] According to another aspect of the present disclosure, a vehicle manufacturing system is provided, which includes the above-mentioned hemming device and a plurality of storage locations, and the hemming device switches between the plurality of storage locations.

[0007] In this solution, the hemming device in the vehicle manufacturing system applies a clamping force to the workpiece by arranging a driving cylinder on the clamping bracket, so that the overall weight of the hemming device is reduced, the hemming device is easy to switch between multiple storage locations, and multiple vehicle models are switched quickly and randomly; the vehicle model investment is low; the design and processing cycle is shortened, the subsequent debugging workload is reduced, and the footprint is small.

[0008] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0010] Figure 1 is a schematic diagram of the three-dimensional structure of the hemming device according to Embodiment 1 of the present disclosure;

[0011] Figure 2 is a schematic diagram of the three-dimensional structure of the hemming device according to Embodiment 1 of the present disclosure from another viewing angle;

[0012] Figure 3 is a schematic diagram of the three-dimensional structure of the fetal membrane of the hemming device according to Example 1 of the present disclosure;

[0013] Figure 4 is a schematic diagram of the three-dimensional structure of the hemming device according to Example 1 of the present disclosure, wherein the fetal membrane is removed;

[0014] Figure 5 is a schematic diagram of a top view of the pressing mechanism and the turning mechanism of the hemming device according to Example 1 of the present disclosure;

[0015] Figure 6 is a schematic diagram of the three-dimensional structure of a pressing bracket and a flipping mechanism of a hemming device according to Example 1 of the present disclosure;

[0016] Figure 7 is a schematic diagram of the three-dimensional structure of a pressing assembly of a hemming device according to Example 1 of the present disclosure;

[0017] Figure 8 is another three-dimensional structural schematic diagram of the pressing assembly of the hemming device according to Example 1 of the present disclosure;

[0018] Fig. 9 is a schematic diagram of the three-dimensional structure of a pressing member of a hemming device according to Embodiment 1 of the present disclosure;

[0019] Fig.10 is a side structural schematic diagram of a clamping mechanism and a flipping mechanism of a hemming device according to Example 1 of the present disclosure;

[0020] Fig.11 is a side structural schematic diagram of the clamping mechanism and the flipping mechanism of the hemming device according to Example 1 of the present disclosure in the second state;

[0021] Fig.12 It is a schematic diagram of the three-dimensional structure of a vehicle manufacturing system according to Example 2 of the present disclosure. DETAILED DESCRIPTION

[0022] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0023] Example 1

[0024] This embodiment provides a hemming device 100, which is used to push the hemming of a workpiece to 105 degrees. The workpiece can be any sheet material. When the hemming device 100 is used in vehicle manufacturing, the workpiece can be a body sheet metal part such as a car cover, etc.

[0025] like Figure 1 , Figure 2 and Figure 6 As shown, the hemming device 100 includes a working platform 1, a clamping mechanism 2, a first hinged portion 3, a turning mechanism 4 and a fetal membrane 5.

[0026] The work platform 1 is provided with a workpiece placement area 11, and the workpiece is placed in the workpiece placement area 11. The clamping mechanism 2 is provided on the work platform 1 and is used to clamp the workpiece on the work platform 1. Figure 3 As shown, the fetal membrane 5 is arranged on the working platform 1, specifically in the workpiece placement area 11, and a suction cup for fixing the workpiece and a supporting member for supporting the workpiece are arranged on the fetal membrane 5. The workpiece to be rolled is placed on the fetal membrane 5 for rolling.

[0027] The clamping mechanism 2 is used to clamp and position the workpiece on the working platform 1 so that the hemming device 100 can perform hemming operations on the workpiece.

[0028] The clamping mechanism 2 includes a clamping bracket 21 and a plurality of clamping components. The plurality of clamping components are arranged on the edge of the clamping bracket 21. Figure 2 , Figure 4 and Figure 8 The clamping assembly shown (corresponding to the first clamping assembly 22A and the second clamping assembly 22B) includes a driving cylinder 221 connected to the clamping bracket 21 and a clamping member 222 connected to the driving cylinder 221. The driving cylinder 221 is used to drive the clamping member 222 to apply force toward the edge of the workpiece placement area 11.

[0029] The clamping mechanism 2 of the hemming device 100 is provided with a driving cylinder 221 on the edge of the clamping bracket 21 to apply clamping force to the workpiece. Compared with the hydraulic clamping mechanism, the hemming device 100 is lightweight as a whole, which is convenient for the hemming device 100 to switch the storage position, and realizes the rapid and random switching of multiple models; it reduces the model investment; shortens the design and processing cycle, reduces the subsequent debugging workload and occupies a small area. At the same time, the hemming device 100 sets the clamping component on the edge of the clamping bracket. In this way, by setting a single clamping bracket, the clamping positioning of the edge of the workpiece can be achieved, avoiding the excessive volume or weight of the clamping mechanism, making the hemming device 100 lighter.

[0030] like Figure 4 As shown, the clamping bracket 21 includes a first supporting beam 211 , two second supporting beams 212 and two reinforcing beams 213 .

[0031] like Figure 5 and Figure 6 As shown, two second support beams 212 are respectively connected to the two ends of the first support beam 211, and the clamping assembly is arranged on the second support beam 212. By splicing the first support beam 211 and the second support beam 212, the weight is lighter than the block-shaped bracket structure, which is conducive to simplifying the structure of the clamping bracket 21 and reducing the weight of the clamping bracket 21, and reducing the weight of the whole equipment of the hemming device 100, so as to facilitate the storage position switching of the hemming device 100. The second support beam 212 is preferably arranged perpendicular to the first support beam 211.

[0032] like Figure 5 and Figure 6 As shown, the second support beam 212 has a first end 214 and a second end 215, and the clamping assembly is disposed between the first end 214 and a connection position 218 between the second support beam 212 and the first support beam 211. Two reinforcing beams 213 are respectively connected to the first support beam 211 and the second support beam 212 on one side close to the first end 214, and the reinforcing beam 213 and at least a portion of the first support beam 211 and at least a portion of the second support beam 212 form a triangular structure.

[0033] like Figure 5 As shown, a clamping assembly is arranged between the first end 214 of the second support beam 212 and the connection position 218 of the second support beam 212 and the first support beam 211, and a reinforcing beam 213 is arranged corresponding to this part. When the clamping bracket 21 drives the clamping members 222 of the multiple clamping assemblies to clamp the workpiece, the clamping assembly applies a reaction force to the clamping bracket 21, and the strength of this part of the clamping bracket is increased through the reinforcing beam 213, so as to reduce the deformation of this part caused by the reaction force, thereby avoiding reducing the clamping effect of the clamping assembly.

[0034] like Figure 5As shown, the reinforcing beam 213 is preferably connected to the middle position of the first support beam 211. The reinforcing beam 213 is arranged in the middle position of the first support beam 211 so that the weight of both ends of the first support beam 211 is balanced, and the force of the clamping bracket 21 is more balanced and not easy to deform. The thickness of the reinforcing beam 213 is preferably equal to the thickness of the first support beam 211 and the second support beam 212, which is conducive to the clamping effect of the clamping bracket 21. The end of the reinforcing beam 213 is preferably directly connected to the first end 214 of the second support beam 212 to form a triangular structure to improve the stability of the clamping bracket 21.

[0035] In this embodiment, a reinforcing beam 213 is used to enhance the overall strength of the clamping bracket 21 and ensure the clamping effect. Optionally, if the strength of the first support beam 211 and the second support beam 212 is sufficient, the reinforcing beam 213 may not be provided.

[0036] In this embodiment, a structure of multiple beams spliced ​​together to form the clamping bracket 21 is used to reduce the overall weight of the hemming device 100. However, the present invention is not limited thereto, and the clamping bracket may also be an integral plate-like structure or a plate-beam splicing structure, and the clamping assembly may be arranged at the edge of such a clamping bracket to achieve the same technical effect.

[0037] like Figure 6 As shown, the clamping bracket 21 further includes an extension plate 216, which is connected between the second support beam 212 and the clamping assembly. The extension plate 216 extends from the second support beam 212 in a direction away from the center of the clamping bracket 21, and the clamping assembly is arranged at the portion of the extension plate 216 extending out of the second support beam 212. The extension plate 216 allows the clamping assembly to extend outward from the clamping bracket 21, thereby avoiding interference between the clamping assembly and the clamping bracket 21, and facilitating the arrangement of the clamping assembly. Preferably, a reinforcing plate 217 is further arranged between the extension plate 216 and the clamping bracket 21, and the reinforcing plate 217 is arranged below the extension plate 216 and abuts against the side wall of the second support beam 212, so as to enhance the bearing capacity of the extension plate 216.

[0038] A plurality of clamping assemblies are respectively arranged on both sides of the clamping bracket 21, and the clamping assemblies arranged on the same side include a first clamping assembly 22A and a second clamping assembly 22B, the first clamping assembly 22A and the second clamping assembly 22B are adjacent to each other, the first clamping assembly 22A is used to clamp the corner of the workpiece, and the second clamping assembly 22B is used to clamp the side of the workpiece. The first clamping assembly 22A is adjacent to the second clamping assembly 22B, that is, the edges of the clamping member 222 of the first clamping assembly 22A and the clamping member 222 of the second clamping assembly 22B form a continuous contour or there is only a small gap between the two ends of the clamping member 222 of the first clamping assembly 22A and the clamping member 222 of the second clamping assembly 22B that are close to each other.

[0039] Adjacent clamping assemblies are respectively arranged on both sides of the clamping bracket 21, so that the clamping force applied to both sides of the workpiece is balanced, and the adjacent clamping assemblies can also provide continuous clamping force along the side of the workpiece, so that the workpiece is better clamped and positioned. In this embodiment, the first clamping assembly 22A and the second clamping assembly 22B are arranged on the first support beam 211. Fig. 9 As shown, the clamping member 222 of the first clamping assembly 22A is crescent-shaped, matching the shape of the corner of the workpiece, and is used to clamp the corner of the workpiece. The clamping member 222 of the second clamping assembly 22B is formed into a straight plate shape, matching the shape of the side of the workpiece, and is used to clamp the side of the workpiece. In other alternative embodiments, the clamping member can also be set to other shapes according to the specific shape of the workpiece.

[0040] Each pressing assembly includes a pressing member 222 , a driving cylinder 221 , a connecting piece 223 connecting the driving cylinder 221 and the pressing member 222 , and a supporting piece connecting the driving cylinder 221 and the pressing bracket 21 .

[0041] like Figure 7-Figure 9 As shown, the clamping member 222 is a profiling plate that matches the shape of the edge of the workpiece. The profiling plate can match the edge shape of the workpiece, so that a uniform clamping force can be applied to the edge of the workpiece to avoid stress concentration. The outer edge of the clamping member 222 away from the clamping bracket 21 is consistent with the shape of the workpiece roll edge fold. The position and trajectory of the workpiece flanging fold are accurately located by the edge of the profiling plate, and the roll edge of the workpiece is convenient. The extension direction of the clamping member 222 is to point to the direction away from the clamping bracket 21 and to extend in the downward direction at the same time, preferably parallel to the moving direction of the piston of the driving cylinder 221.

[0042] like Figure 8 As shown, the connecting piece 223 connects the piston of the driving cylinder 221 and the center portion in the width direction of the pressing member 222, and the connecting piece 223 extends along the width direction of the pressing member 222. The connecting piece 223 extends along the width direction of the pressing member 222, thereby increasing the connection area between the connecting piece 223 and the pressing member 222, improving the connection reliability between the connecting piece 223 and the pressing member 222, and facilitating the connecting piece 223 to transmit the pressing force to the pressing member 222, so that the pressing force of the pressing member 222 is more uniform.

[0043] like Figure 7 and 10As shown, the clamping assembly is installed obliquely relative to the plane where the clamping bracket 21 is located so that the piston of the driving cylinder 221 moves in a direction away from the clamping bracket 21 and in a downward direction at the same time. By installing the clamping assembly obliquely, the piston of the driving cylinder 221 can move toward the edge of the workpiece placement area 11, i.e., the position where the edge of the workpiece is located, so that the clamping assembly applies a clamping force to the edge of the workpiece.

[0044] like Figure 7 As shown, the support member 224 is disposed between the clamping assembly and the clamping bracket 21, and is used to support the clamping assembly. The support member 224 has a first mounting surface and a second mounting surface that are inclined to each other, the first mounting surface is connected to the clamping bracket 21, and the second mounting surface is connected to the driving cylinder 221. By providing the support member 224, the clamping assembly can be installed obliquely relative to the clamping bracket 21.

[0045] In this embodiment, if Figure 7 As shown, the support member 224 includes a connecting plate 2241 and a mounting plate 2242 that are connected to each other; the first mounting surface is arranged on the connecting plate 2241, and the second mounting surface is arranged on the mounting plate 2242; an angle is formed between the connecting plate 2241 and the mounting plate 2242, and a reinforcing rib 2243 is arranged between the connecting plate 2241 and the mounting plate 2242. The support member 224 adopts the above structure to reduce the overall weight of the support member 224, and realize the lightweight design of the pressing member 222 and the hemming device 100. Figure 7 The first mounting surface is the upper surface of the connecting plate 2241, and the second mounting surface is the lower surface of the mounting plate 2242. In other alternative embodiments, the support member may also be configured as a block structure having a triangular or trapezoidal cross section along the vertical direction, and the first mounting surface and the second mounting surface are the upper surface and the lower surface of the support member 224, respectively.

[0046] In this embodiment, a support member 224 is used to connect the clamping bracket 21 and the driving cylinder 221, but the present invention is not limited to this. The clamping bracket can also be directly connected to the driving cylinder 221 by setting an inclined connecting surface to achieve the same technical effect.

[0047] In this embodiment, the mounting plate 2242 is mounted on the extension plate 216 of the clamping bracket 21. In other embodiments, if there is no extension plate, the mounting plate 2242 can also be directly connected to the second support beam 212 of the clamping bracket 21.

[0048] The connection of the various components of the clamping bracket 21 is preferably welded, and the connection between the clamping assembly and the clamping bracket 21 and the connection between the various components in the clamping assembly are preferably threaded. Of course, those skilled in the art can also use other existing methods to achieve the connection of the above components as needed, which will not be repeated here.

[0049] like Figure 6 , Fig.10 and Fig.11 As shown, the first hinged portion 3 is disposed on the working platform 1 , the clamping bracket 21 is connected to the first hinged portion 3 , and the clamping mechanism 2 flips around the first hinged portion 3 to facilitate moving the workpiece into or out of the workpiece placement area 11 .

[0050] In this embodiment, the clamping mechanism 2 allows the workpiece to be put in and taken out by turning over. Fig.10 The first state shown and Fig.11 In the second state shown, in the first state, the clamping mechanism 2 clamps and positions the workpiece so as to perform hemming operation on the workpiece. In the second state, the clamping mechanism 2 flips 90 degrees and presents an open posture so that the workpiece can be taken out.

[0051] In other embodiments, the clamping mechanism 2 may also move up and down so that the workpiece can be put in and taken out.

[0052] like Fig.10 and Fig.11 As shown, the clamping assembly is disposed between the first end 214 and the connection position 218 between the second support beam 212 and the first support beam 211. In the extension direction of the first support beam 211, the distance between the first end 214 and the first hinge portion 3 is preferably greater than the distance between the second end 215 and the first hinge portion 3. Since the clamping assembly is disposed close to the first end 214 of the first support beam 211, more space is reserved between the first hinge portion 3 and the first end 214, which can facilitate the arrangement of the clamping assembly. At the same time, the clamping assembly is disposed corresponding to the workpiece placement area, and the first hinge portion 3 is disposed away from the first end 214, which can also facilitate the arrangement of sufficient space for placing the workpiece.

[0053] Specifically, a bracket 31 for setting the first hinged portion 3 is provided on the working platform 1, and the bracket 31 extends from the working platform 1 to the direction close to the clamping bracket 21, and the bottom of the clamping bracket 21 extends toward the working platform 1 and is hinged to the bracket 31 through the first hinged portion 3. Through the above arrangement, sufficient avoidance space is provided for the flipping of the clamping platform to avoid interference between the clamping platform and other components. The bracket 31 is provided with a first limiting portion 311 and a second limiting portion 312. When the clamping mechanism 2 is in the first state, the second support beam 212 of the clamping bracket 21 abuts against the first limiting portion 311 to limit the clamping bracket 21 from rotating excessively toward the workpiece placement area 11 and contacting the workpiece; when the clamping mechanism 2 is in the second state, the second support beam 212 of the clamping bracket 21 abuts against the second limiting portion 312, and the second limiting portion 312 is used to limit the clamping mechanism 2 from excessively opening relative to the workpiece placement area 11 in the second state.

[0054] The turning mechanism 4 is used to drive the pressing bracket 21 to turn around the first hinge portion 3 so as to facilitate the workpiece to move into or out of the workpiece placement area 11 .

[0055] The flipping mechanism 4 includes a flipping arm assembly 41 and a driver 42. The flipping arm assembly 41 is hinged to the working platform 1 and the clamping bracket 21 respectively; the flipping arm assembly 41 is hinged to the working platform 1 at a second hinge portion 43; the driver 42 is used to drive the flipping arm assembly 41 to rotate around the second hinge portion 43. The flipping mechanism 4 of this structure is small in size and occupies less space, which is conducive to the lightweight and miniaturization of the hemming device 100.

[0056] In this embodiment, the driver 42 is a cylinder, which is light in weight and is conducive to the lightweight design of the flip mechanism 4. In other alternative embodiments, the driver 42 can also be a motor, and the motor shaft drives the flip arm assembly 41 to rotate around the second hinge 43.

[0057] like Figure 6 , Fig.10 and Fig.11 As shown, the driver 42 includes a push rod 421, the end of which is hinged to the flip arm assembly 41, and the driver 42 can extend and retract the push rod 421 to drive the flip arm assembly 41 to rotate around the second hinge 43. Through the above arrangement, the cylinder 42 is directly arranged in parallel on the bottom plate, which can make full use of the space and is more conducive to lightweight. In this embodiment, the driver 42 adopts a cylinder, and the cylinder piston is connected to the push rod 421.

[0058] like Figure 6 , Fig.10 and Fig.11 As shown, the flip arm assembly 41 includes a first flip arm 411 and a second flip arm 412; one end of the first flip arm 411 is hinged to the clamping bracket 21, the other end of the first flip arm 411 is hinged to one end of the second flip arm 412, and the other end of the second flip arm 412 is hinged to the working platform 1. The flip wall assembly 41 uses two flip arms hinged to each other to avoid excessive concentration of stress on the flip arm assembly 41, reduce the strength requirements of the flip arm assembly 41, and help to extend the service life of the flip mechanism 4.

[0059] like Figure 6 , Fig.10 and Fig.11 As shown, the end of the push rod 421 is hinged to the second flip arm 412, and the driver 42 can extend and retract the push rod 421 to drive the second flip arm 412 to rotate around the second hinge 43. The push rod 421 is hinged to the second flip wall 412 instead of the first flip arm, which facilitates the installation of the driver 42. The driver 42 can be directly installed on the working platform without raising it to apply force to the first flip arm 411.

[0060] like Figure 6 and Fig.11 As shown, the first flip arm 411 includes a detachably connected first connection portion 4111 and a second connection portion 4112, the first connection portion 4111 is hinged to the clamping bracket 21, and the second connection portion 4112 is hinged to the second flip arm 412, which facilitates the connection between the flip arm assembly 41 and the driver 42 and the clamping bracket 21. The first flip arm 411 is set as a detachable structure, which facilitates the rapid adjustment of the posture of the flip arm assembly 41.

[0061] like Figure 6 and Fig.10 As shown, the flip arm assembly 41 is hinged to the top of the clamping bracket 21. Specifically, the flip arm assembly 41 is hinged to the top of the first support beam 211, and the first hinge portion 3 is arranged between the second end 215 of the second support beam 212 and the connection position 218 of the first support beam 211 and the second support beam 212 in the extension direction of the first support beam 211, so that the flip arm assembly 41 can be moved upward and backward (here refers to the direction toward the first hinge portion in the horizontal direction, see Figure 5 ) pulls the first support beam 211 so that the clamping bracket 21 is flipped backward.

[0062] The first hinged parts 3 are provided on both sides of the clamping bracket 21 , and the flip arm assembly 41 is hinged to the middle position of the first support beam 211 , which is beneficial to the stability of the clamping bracket 21 when flipping.

[0063] like Figure 6 , Fig.10 and Fig.11 As shown, the turning mechanism 4 further includes a limiting device 44, which is used to limit the rotation of the turning arm assembly 41 toward the workpiece placement area 11 to ensure the position of the turning arm assembly 41 after pressing.

[0064] In this embodiment, the limiting device 44 is provided on the working platform 1 and is provided on a side of the flip arm assembly 41 close to the workpiece placement area 11; the limiting device 44 includes a limiting surface, which faces the flip arm assembly 41 and is used to abut against the flip arm assembly 41. By providing the limiting device 44 with the limiting surface on the front side of the flip arm assembly 41, the position accuracy of the flip arm assembly 41 after being pressed is ensured with a simple structure.

[0065] The working mode of the hemming device is briefly described below.

[0066] Before the workpiece is placed in the workpiece placement area 11, the clamping mechanism 2 is in the second state, see Fig.11At this time, the driver 42 applies a thrust to the second flip arm 412, and the piston of the driver 42 is in a maximum tension state. After the workpiece is placed in the workpiece placement area 11, the driver 42 starts to apply a pulling force to the second flip arm 412, so that the second flip arm 412 swings forward (at Fig.11 The second flip arm 412 drives the first flip arm 411 to swing and drives the pressing bracket 21 to flip forward (in Fig.11 until it reaches the first state, see Fig.10 At this time, the limiting device 44 and the first limiting portion 311 both prevent the clamping bracket 21 from continuing to move toward the workpiece, so as to prevent the clamping bracket 21 from contacting the workpiece and causing damage to the workpiece. At the same time, the piston of the driver 42 is in the maximum contraction state and maintains the tension. After the clamping mechanism 2 is in the first state, the driving cylinder 221 drives the clamping member 222 to move toward the edge of the workpiece placement area 11, and causes the clamping member 222 to clamp the edge of the workpiece. Since the push rod of the driver 42 still maintains the tension, the clamping bracket 21 will not flip upward due to the reaction force applied by the driving cylinder 221 to the clamping bracket 21. After the clamping mechanism 2 clamps and positions the workpiece, the hemming device 100 performs hemming operations on the workpiece.

[0067] After the hemming operation is completed, the piston of the driving cylinder 221 of the clamping assembly is retracted to release the clamping positioning of the workpiece, and then the push rod of the driver 42 applies a thrust to the second flip arm 412, so that the clamping mechanism 2 changes from the first state to the second state.

[0068] Example 2

[0069] The present embodiment provides a vehicle manufacturing system, specifically a body sheet metal manufacturing system, which includes a punching station, a hemming station, an electrophoresis station, and a transportation mechanism connecting the multiple stations. Fig.12 Only part of the hemming station is shown. Fig.12 As shown, the vehicle manufacturing system (the hemming station) includes the hemming device 100 in Example 1 and multiple storage locations, and the hemming device 100 switches between the multiple storage locations. The hemming device 100 in the vehicle manufacturing system applies a clamping force to the workpiece by setting a driving cylinder 221 on the clamping bracket 21, so that the hemming device 100 is lightweight as a whole, and the hemming device 100 is convenient to switch between multiple storage locations, thereby realizing fast and random switching of multiple vehicle models; reducing the vehicle model investment; shortening the design and processing cycle, reducing the subsequent debugging workload, and occupying a small area.

[0070] like Fig.12The vehicle manufacturing system shown further includes a track 200, the track 200 connects a plurality of storage locations, and the hemming device 100 is slidably disposed on the track 200. The track 200 guides the hemming device 100, facilitating the movement and fixation of the hemming device 100.

[0071] In the description of the present disclosure, it is to be understood that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships, are orientations of devices or components in normal use, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation at any time, and therefore should not be understood as a limitation on the present disclosure in this regard.

[0072] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A hemming device, comprising a working platform and a clamping mechanism, wherein the clamping mechanism is arranged on the working platform and is used to clamp a workpiece on the working platform, characterized in that: in, The working platform is provided with a workpiece placement area; The clamping mechanism comprises a clamping bracket and a plurality of clamping components, wherein the plurality of clamping components are arranged on the edge of the clamping bracket; The clamping assembly comprises a driving cylinder connected to the clamping bracket and a clamping member connected to the driving cylinder, wherein the driving cylinder is used to drive the clamping member to apply force toward the edge of the workpiece placement area.

2. The hemming device according to claim 1, wherein: The clamping bracket includes two second support beams and a first support beam, the two second support beams are respectively connected to two ends of the first support beam, and the clamping assembly is arranged on the second support beam.

3. The hemming device according to claim 2, wherein: The second support beam has a first end, and the clamping assembly is disposed between the first end and a connection position between the second support beam and the first support beam; The clamping bracket also includes two reinforcing beams, which respectively connect the first support beam and the second support beam on one side close to the first end, and the reinforcing beam forms a triangular structure with at least part of the first support beam and at least part of the second support beam.

4. The hemming device according to claim 3, wherein: The reinforcing beam is connected at a middle position of the first supporting beam.

5. The hemming device according to claim 2, wherein: The clamping bracket also includes an extension plate, which is connected between the second support beam and the clamping assembly. The extension plate extends from the second support beam in a direction away from the center of the clamping bracket, and the clamping assembly is arranged on the portion of the extension plate extending from the second support beam.

6. The hemming device according to claim 1, wherein: The pressing member is a contoured plate that matches the shape of the edge of the workpiece.

7. The hemming device according to claim 1, wherein: The plurality of clamping assemblies are respectively arranged on both sides of the clamping bracket; The clamping assembly arranged on the same side includes a first clamping assembly and a second clamping assembly, wherein the first clamping assembly is adjacent to the second clamping assembly, the first clamping assembly is used to clamp the corner of the workpiece, and the second clamping assembly is used to clamp the side of the workpiece.

8. The hemming device according to claim 1, wherein: The clamping assembly further includes a connecting piece, which connects a piston of the driving cylinder and a central portion of the clamping member in a width direction, and the connecting piece extends along the width direction of the clamping member.

9. The hemming device according to claim 1, wherein: The clamping assembly is installed obliquely relative to the plane where the clamping bracket is located so that the moving direction of the piston of the driving cylinder points to a direction away from the clamping bracket and a downward direction at the same time.

10. The hemming device according to claim 9, wherein: The clamping assembly also includes a support member having a first mounting surface and a second mounting surface inclined to each other, the first mounting surface is connected to the clamping bracket, and the second mounting surface is connected to the driving cylinder.

11. The hemming device according to claim 10, wherein: The support member comprises a connecting plate and a mounting plate connected to each other; The first mounting surface is disposed on the connecting plate, and the second mounting surface is disposed on the mounting plate; An angle is formed between the connecting plate and the mounting plate, and a reinforcing rib is arranged between the connecting plate and the mounting plate.

12. The hemming device according to claim 1, wherein: The hemming device further comprises a first hinged portion arranged on the working platform, the clamping bracket is connected to the first hinged portion, and the clamping mechanism flips around the first hinged portion.

13. The hemming device according to claim 12, wherein: The clamping bracket includes two second support beams and a first support beam, and the two second support beams are respectively connected to two ends of the first support beam; The second support beam has a first end and a second end, and the clamping assembly is arranged between the first end and the connection position between the second support beam and the first support beam. In the extension direction of the first support beam, the distance between the first end and the first hinge part is greater than the distance between the second end and the first hinge part.

14. The hemming device according to claim 13, wherein: The hemming device further comprises a flipping mechanism, and the flipping mechanism is used to drive the pressing bracket to flip around the first hinge portion.

15. The hemming device according to claim 14, wherein: The flipping mechanism comprises a flipping arm assembly and a driver, wherein the flipping arm assembly is hinged to the working platform and the pressing bracket respectively; The flip arm assembly is hinged to the work platform at a second hinge portion; The driver is used for driving the flip arm assembly to rotate around the second hinged portion.

16. The hemming device according to claim 15, wherein: The driver comprises a push rod, an end of which is hinged to the flip arm assembly. The driver can extend and retract the push rod to drive the flip arm assembly to rotate around the second hinged portion.

17. The hemming device according to claim 15, wherein: The flip arm assembly comprises a first flip arm and a second flip arm; One end of the first flip arm is hinged to the clamping bracket, the other end of the first flip arm is hinged to one end of the second flip arm, and the other end of the second flip arm is hinged to the working platform.

18. The hemming device according to claim 17, wherein: The driver comprises a push rod, an end of which is hinged to the second flip arm, and the driver can extend and retract the push rod to drive the second flip arm to rotate around the second hinged portion.

19. The hemming device according to claim 15, wherein: The flip arm assembly is hinged to the top of the clamping bracket.

20. The hemming device according to claim 19, wherein: The flip arm assembly is hinged to the top of the first support beam, and the first hinge portion is arranged between the second end of the second support beam and the connection position between the first support beam and the second support beam in the extension direction of the first support beam.

21. The hemming device according to claim 17, wherein: The first flip arm includes a first connection portion and a second connection portion which are detachably connected, the first connection portion is hinged to the pressing bracket, and the second connection portion is hinged to the second flip arm.

22. The hemming device according to claim 16, wherein: The turning mechanism further comprises a limiting device, and the limiting device is used to limit the rotation of the turning arm assembly toward the workpiece placement area.

23. The hemming device according to claim 22, wherein: The limiting device is arranged on the working platform and is arranged on a side of the flip arm assembly close to the workpiece placement area; The limiting device comprises a limiting surface, which faces the flip arm assembly and is used to abut against the flip arm assembly.

24. The hemming device according to any one of claims 1 to 23, wherein: The hemming device further comprises a fetal membrane, which is arranged on the working platform and is used for supporting the workpiece.

25. A vehicle manufacturing system, characterized in that: It comprises a hemming device as described in any one of claims 1 to 24 and a plurality of storage locations, and the hemming device switches between the plurality of storage locations.

26. The vehicle manufacturing system according to claim 25, wherein: The vehicle manufacturing system further comprises a track, wherein the track connects a plurality of the storage locations, and the hemming device is slidably disposed on the track.

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