Composite edge covering mould for vehicle door

Abstract

The utility model provides a car door composite edge covering mould, and relates to the technical field of car door edge covering. A mould body of a Y-direction clamping mechanism comprises a profile; the connecting line between the pressing block and the conforming surface is along the thickness direction of the outer door plate; the standing pile assembly comprises a movable piece connected with a pressing block, and an X-direction outer plate positioning assembly of the manual edge covering positioning unit comprises a first outer door plate positioning block and a second outer door plate positioning block which are arranged on the two sides of an outer door plate in the length direction of the outer door plate, and the distance between the first outer door plate positioning block and the second outer door plate positioning block is adjustable. The Z-direction outer plate positioning assembly comprises a third outer door plate positioning block and a fourth outer door plate positioning block which are arranged on the two sides of the outer door plate in the width direction of the outer door plate, the inner plate positioning assembly comprises a plurality of positioning backup plates distributed in the width direction and the length direction of the inner door plate. The machine edge covering positioning unit comprises an outer door plate positioning pin corresponding to the positioning hole of the outer door plate and an inner door plate positioning pin corresponding to the positioning hole of the inner door plate; manual edge covering operation and mechanical edge covering operation can be carried out on one edge covering mould.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle door hemming, in particular to a composite hemming jig for vehicle doors. Background Art

[0002] Automobile doors are constructed from inner and outer panels. These panels are typically formed by stamping and drawing thin steel sheets with high elongation. The outer panels typically have a certain width of edge along their perimeter to be hemmed. Before hemming, the inner and outer panels must be joined together, with the outer edge of the panel accommodating the inner panel. The hemming equipment then hems the inner and outer panels together to form the composite assembly.

[0003] Door hemming can be performed manually or by robotic hemming. There are significant differences in stability and dimensional accuracy between the trial and mass production stages. To address these differences in product stability and dimensional accuracy, the two jigs require different positioning structures, material selection, and hemming methods. Currently, manual hemming jigs are used for doors in the trial production stage, while robotic hemming jigs are used in mass production. Manual hemming in the trial production stage requires adjustable jig positioning in the X and Z directions. Conversely, robotic hemming in mass production requires precise and reliable jig positioning. Therefore, robotic hemming jigs in mass production utilize precise positioning methods such as hole positioning.

[0004] Because different jigs were used during the trial and mass production phases, dimensional accuracy could not be guaranteed due to jig changes. Switching from manual jigs to robotic hemming jigs required jig debugging and matching, a significant workload that extended the development cycle. Furthermore, switching jigs between different phases required frequent manual jig switching, leading to significant complaints from production workers, reduced production efficiency, and increased production cycles.

[0005] Therefore, it is urgent to propose a hemming jig that can integrate manual hemming jigs and robotic hemming jigs. One jig can be used for hemming operations of car doors in the trial production and mass production stages, meeting the technical requirements of manual hemming jigs and robotic hemming jigs, shortening the development cycle, reducing development costs, and improving production efficiency. Utility Model Content

[0006] The purpose of the utility model is to provide a composite hemming jig for vehicle doors to solve the problems existing in the above-mentioned prior art. The manual hemming jig and the robot hemming jig are integrated so that one jig can be used for both manual hemming operations in the trial production stage and machine hemming operations of vehicle doors in the mass production stage, thereby reducing development costs and improving production efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following solutions: a composite edging mold for a vehicle door is provided, comprising: a mounting plate; a Y-axis clamping mechanism, comprising a mold body and a pressing block, the mold body comprising a mounting surface and a contour surface for supporting the outer door panel, the mounting surface being opposite to the contour surface, and the mounting surface being mounted on the surface of the mounting plate; a line between the pressing block and the contour surface is along the thickness direction of the outer door panel placed on the contour surface; a standing pile assembly, comprising a movable part moving along the thickness direction of the outer door panel placed on the contour surface, the standing pile assembly being connected to the mounting plate; the pressing block being connected to the movable part; a manual edging positioning unit, comprising an X-axis outer panel positioning assembly, a Z-axis outer panel positioning assembly and an inner panel positioning assembly, the X-axis outer panel positioning assembly comprising a first outer door panel positioning block and a second outer door panel positioning block with adjustable distance Positioning blocks, the first outer door panel positioning block and the second outer door panel positioning block are arranged on both sides of the outer door panel along the length direction of the outer door panel; the Z-direction outer panel positioning assembly includes a third outer door panel positioning block and a fourth outer door panel positioning block with adjustable distance, and the third outer door panel positioning block and the fourth outer door panel positioning block are arranged on both sides of the outer door panel along the width direction of the outer door panel; the inner panel positioning assembly includes a plurality of positioning support plates distributed along the width direction and length direction of the inner door panel, and the positioning support plate includes an inner door panel abutting end for abutting with the inner door panel; the machine edge positioning unit includes an outer door panel positioning pin corresponding to the positioning hole of the outer door panel, and an inner door panel positioning pin corresponding to the positioning hole of the inner door panel; the outer door panel positioning pin is located in the thickness direction of the outer door panel placed on the symbol surface; the inner door panel positioning pin is connected to the movable part.

[0008] Preferably, it also includes a suction cup assembly and a limit block assembly, the suction cup assembly includes a plurality of suction cups for adsorbing the outer door panel, and the suction cups are connected to the mounting plate through suction cup connectors; the limit block assembly includes a plurality of limit blocks for abutting the outer door panel in the suction cup adsorption direction, and the limit blocks are connected to the mold body.

[0009] Preferably, a first pad support is provided between the pressing block and the movable member, and pads are provided on the contact surfaces of the first pad support, the movable member and the pressing block.

[0010] Preferably, the standing pile assembly includes a fixedly connected driving device and a connecting device, the movable part is connected to the output end of the driving device, the connecting device is fixedly connected to the mounting plate, and the output end of the driving device is connected to the movable part.

[0011] Preferably, the first outer door panel positioning block, the second outer door panel positioning block, the third outer door panel positioning block and the fourth outer door panel positioning block are all telescopic positioning blocks; the X-direction outer panel positioning assembly and the Z-direction outer panel positioning assembly also include a standing pile type positioning block, and the telescopic positioning block is connected to the telescopic end of the telescopic device; the standing pile type positioning block is connected to the movable part through a second pad support, and pads are provided on the fitting surfaces of the second pad support, the movable part and the standing pile type positioning block.

[0012] Preferably, the telescopic device includes a positioning block accommodating body, the positioning block accommodating body is provided with a accommodating cavity for accommodating the telescopic positioning block, the accommodating cavity is provided with a sliding entrance for the telescopic positioning block to slide into, and the accommodating cavity and the telescopic positioning block are connected by a reset spring.

[0013] Preferably, a third pad support and a flip support are connected between the inner door panel locating pin and the movable part; the third pad support is provided with a pad for adjusting the position of the inner door panel locating pin, and the third pad support is provided with a flip handle for driving the flip support to move.

[0014] Preferably, the mold body is provided with a plurality of outer door panel sensors for detecting the installation position of the outer door panel, and the flippable support is provided with an inner door panel sensor for detecting the installation position of the inner door panel.

[0015] Preferably, it also includes a supporting base, on which a left door panel mold support and a right door panel mold support are provided; the left door panel mold support and the right door panel mold support are both installed with the mounting plate, the Y-axis clamping mechanism, the manual edge positioning unit, and the machine edge positioning unit.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The jig body supports the outer door panel, and the manual hemming positioning unit is used to position the inner and outer door panels during the trial production phase. The distance between the outer door positioning blocks is adjustable to meet the requirements of manual hemming, eliminating the need to switch jig bodies. The machine hemming positioning unit can accurately position the inner and outer door panels during the mass production phase to meet the requirements of machine hemming. This utility model integrates a manual hemming jig with a robotic hemming jig, allowing a single jig to be used for both manual hemming in the trial production phase and machine hemming of vehicle doors during the mass production phase. This meets the technical requirements of both manual hemming jigs and robotic hemming jigs, ensuring the efficiency and stability of hemming the inner and outer panels, shortening the development cycle, reducing development costs, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the general assembly structure of the tire body of the utility model;

[0020] Figure 2 This is a schematic top view of the tire body of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the tire body of the utility model;

[0022] Figure 4 This is a schematic diagram of the tire body structure from another perspective of the present invention;

[0023] Figure 5 This is a schematic diagram of the Y-direction clamping mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the positioning pin stand assembly of the utility model;

[0025] Figure 7 This is a schematic diagram of the positioning pin stand assembly of the utility model from another perspective;

[0026] Figure 8 This is a schematic diagram of the suction cup assembly of the utility model;

[0027] Figure 9 This is a schematic diagram of the positioning block standing pile assembly of the utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the pad of the utility model;

[0029] Figure 11 This is a schematic diagram of the first type of compression block structure of the utility model;

[0030] Figure 12 This is a schematic diagram of the second type of compression block structure of the utility model;

[0031] Figure 13 This is a schematic diagram of the third type of compression block structure of the utility model;

[0032] Figure 14 This is a schematic diagram of the structure of the telescopic positioning block of the utility model;

[0033] Figure 15 This is a schematic diagram of the telescopic positioning block structure of the utility model from another perspective;

[0034] Figure 16 This is a schematic diagram of the structure of the positioning pin connector of the utility model;

[0035] Figure 17 This is a schematic diagram of the positioning pin connector structure of the present invention from another perspective;

[0036] Figure 18 This is a schematic diagram of the mounting plate structure of the utility model;

[0037] Figure 19 This is a schematic diagram of the overall structure of the support base of the utility model;

[0038] Figure 20 This is a schematic diagram of the general assembly structure of the utility model;

[0039] Figure 21 This is a left side schematic diagram of the general assembly structure of the utility model;

[0040] Figure 22 It is a right side schematic diagram of the general assembly structure of the utility model.

[0041] Among them, 1. Mounting plate; 2. Mold body; 3. Profile surface; 4. Stand assembly; 5. Movable part; 6. Pressing block; 7. First outer door panel positioning block; 8. Second outer door panel positioning block; 9. Third outer door panel positioning block; 10. Fourth outer door panel positioning block; 11. Positioning support plate; 12. Outer door panel positioning pin; 13. Inner door panel positioning pin; 14. Suction cup; 15. Suction cup connector; 16. Limit stopper; 17. First pad support; 18. Pad; 19. Driving device; 20. Connecting device; 21. Telescopic positioning block; 2 2. Standing type positioning block; 23. Second pad support; 24. Positioning block container; 25. Return spring; 26. Third pad support; 27. Flip support; 28. Flip handle; 29. ​​Outer door panel sensor; 30. Inner door panel sensor; 31. Support base; 32. Left door panel jig support; 33. Right door panel jig support; 34. Motor; 35. Positioning block standing assembly; 36. Pressing block standing assembly; 37. Positioning pin standing assembly; 38. Connecting beam; 39. Lifting ear; 40. Positioning pin connector. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0044] Please refer to Figures 1 to 22 As shown, when the door is assembled on the car, a three-dimensional coordinate system is established based on this, forming the X direction, Y direction, and Z direction of the door. The X direction is the length direction of the door, the Y direction is the thickness direction of the door, and the Y direction also corresponds to the opening and closing (rotation) direction of the door on the car body. The Z direction is the width direction (height direction) of the door.

[0045] Example 1: This embodiment provides a composite door hemming jig, comprising a mounting plate 1, a stand assembly 4, a Y-axis clamping mechanism, a manual hemming positioning unit, and a machine hemming positioning unit. The Y-axis clamping mechanism includes a jig body 2, provided with a contoured surface 3 that matches the shape of the outer door panel and supports the outer door panel via the contoured surface 3. The mounting end of the stand assembly 4 is preferably connected to the mounting plate 1. The stand assembly 4 is provided with a movable member 5 that moves along the thickness direction of the outer and inner door panels resting on the contoured surface 3. A mounting surface is provided on the side of the jig body 2 facing away from the contoured surface 3. The mounting surface of the jig body 2 is disposed on the mounting plate 1, supporting the jig body 2 via the mounting plate 1. The outer and inner door panels are compressed by a clamping block 6. The line connecting the clamping block 6 and the contoured surface 3 runs along the thickness direction of the outer door panel resting on the contoured surface 3, i.e., the thickness direction of the outer door panel is the Y direction. The clamping block 6 is connected to the movable member 5, and can be driven to move by the movable member 5. The manual hemming positioning unit includes an X-direction outer panel positioning assembly, a Z-direction outer panel positioning assembly, and an inner panel positioning assembly. The X-direction outer panel positioning assembly includes a plurality of first outer door panel positioning blocks 7 and a plurality of second outer door panel positioning blocks 8. The distance between the first outer door panel positioning blocks 7 and the second outer door panel positioning blocks 8 can be adjusted, and the first outer door panel positioning blocks 7 and the second outer door panel positioning blocks 8 are respectively arranged on both sides of the outer door panel along the length direction of the outer door panel; that is, the length direction of the outer door panel is the X direction. The Z-direction outer panel positioning assembly includes a third outer door panel positioning block 9 and a fourth outer door panel positioning block 10. The distance between the third outer door panel positioning block 9 and the fourth outer door panel positioning block 10 is adjustable. The third outer door panel positioning block 9 and the fourth outer door panel positioning block 10 are respectively arranged on both sides of the outer door panel along the width (height) direction of the outer door panel. The inner panel positioning assembly includes a plurality of positioning support plates 11. The positioning support plates 11 are distributed along the width and length directions of the inner door panel, that is, the X direction and the Z direction. The positioning support plates 11 include inner door panel abutting ends, which abut against the inner door panel through the inner door panel abutting ends to position the inner door panel. Preferably, the positioning support plates 11 are connected to the mounting plate 1 on the side away from the inner door panel abutting. The machine's hemming positioning unit includes an outer door panel positioning pin 12 and an inner door panel positioning pin 13. The outer door panel positioning pin 12 corresponds to the positioning hole of the outer door panel and is located in the direction in which the contour surface 3 supports the outer door panel, that is, in the thickness direction of the outer door panel placed on the contour surface 3. The outer door panel positioning pin 12 can be inserted into the positioning hole of the outer door panel. The inner door panel positioning pin 13 corresponds to the positioning hole of the inner door panel and is connected to the movable part 5 of the standing pile assembly 4. The inner door panel positioning pin 13 can move along the thickness direction of the outer and inner door panels placed on the contour surface 3. The inner door panel positioning pin 13 can be inserted into the positioning hole of the inner door panel to position the inner door panel.

[0046] Working Principle: The outer door panel is placed on the contour surface 3 of the mold body 2, and the contour surface 3 supports the outer door panel. Preferably, the contour surface 3 forms a cavity that matches the shape of the outer door panel, and the contour surface 3 can completely fit the outer door panel. When the vehicle door is in the trial production stage, the hemming process is carried out by manual hemming. The outer door panel and the inner door panel are positioned using a manual hemming positioning unit. The outer door panel is then placed on the contour surface 3. The outer door panel is then positioned in the X direction by adjusting the distance between the first outer door panel positioning block 7 and the second outer door panel positioning block 8. The outer door panel is then positioned in the Z direction by adjusting the distance between the third outer door panel positioning block 9 and the fourth outer door panel positioning block 10. Preferably, the outer door panel's flanged surface contacts the corresponding outer door panel positioning block, achieving rough positioning of the outer door panel. The inner door panel is then placed into the flange of the outer door panel. The positioning support plate 11 extends into the inner door panel, and the positioning support plate 11 can be used to position the inner door panel in the X and Z directions. The movable part 5 of the standing pile assembly 4 drives the clamping block 6 to move, and the inner and outer door panel assemblies are clamped by the clamping block 6 to limit the Y direction of the inner and outer door panels; the inner and outer door panels are in a completely positioned state, and during the hemming operation, the distance between the positioning blocks of the outer door panel can be adjusted to reliably position the outer door panel while avoiding interference between the positioning blocks and the hemming operation by adjusting the distance. The operator uses an hemming hammer to perform manual hemming operations until the four sides of the outer door panel are all fitted to the inner door panel, and there is no obvious overlapping, bulging, deformation, etc. At this time, the manual hemming of the door is completed.When the hemming operation is completed, the inner and outer door panel assemblies that have been manually hemmed can be removed; the outer door panel in the batch production stage is placed on the contour surface 3, and the hemming operation is performed by robot rolling, and the outer door panel and the inner door panel are positioned by the machine hemming positioning unit. At this time, the positioning holes on the outer door panel are positioned by the outer door panel positioning pins 12; specifically, the outer door panel positioning pins 12 can be used to position the outer door panel in the X and Z directions; then, the inner door panel is placed in the flange of the outer door panel, and the four sides of the inner door panel are adjusted to enter the flange of the outer door panel; the movable parts 5 of the corresponding standing pile assembly 4 can drive the inner door panel positioning pins 13 to move, so that the inner door panel positioning pins 13 can be accurately inserted into the positioning holes of the inner door panel; preferably, the inner door panel is positioned in the X and Z directions by the inner door panel positioning pins 13 Positioning; preferably, the outer door panel locating pins 12 and the inner door panel locating pins are both inserted into the corresponding outer door panel locating holes and inner door panel locating holes in the thickness direction; thereafter, the movable part 5 of the standing pile assembly 4 drives the clamping block 6 to move, presses the inner door panel into place, limits the Y direction of the inner and outer door panels, and makes the inner and outer door panels in a fully positioned state; it can minimize the tolerance accumulation, improve the positioning accuracy, ensure the efficiency and stability of the inner and outer panel hemming, and reduce the occurrence of defects. The robot automatically completes the hemming action of the inner and outer panels of the car door according to the preset program. After the robot returns to its position, the hemming status around the car door is manually checked. After confirming that the hemming is intact, all the outer door panel locating pins 12, inner door panel locating pins 13 and the clamping assembly are opened, and the car door assembly is manually removed. At this time, the robot hemming of the car door is completely completed.

[0047] In the present invention, the outer door panel is supported by the jig body 2, and the inner and outer door panels in the trial production stage are positioned by the manual hemming positioning unit. The distance between the outer door positioning blocks is adjustable to meet the requirements and specifications of manual hemming, eliminating the need to switch the jig body. The inner and outer door panels in the mass production stage can be accurately positioned by the machine hemming positioning unit to meet the requirements and specifications of machine hemming. The present invention integrates the manual hemming jig and the robotic hemming jig, allowing a single jig to be used for hemming operations in both the trial production and mass production stages, meeting the technical requirements of both manual hemming jigs and robotic hemming jigs, ensuring the efficiency and stability of hemming the inner and outer panels, shortening the development cycle, reducing development costs, and improving production efficiency.

[0048] In one embodiment, the outer edge of the outer door panel is supported by the contour surface 3. The composite door edging mold also includes a suction cup assembly and a limit block assembly. The suction cup assembly and the limit block assembly are preferably arranged on the inner side of the contour surface 3 and corresponding to the main body of the outer door panel, and are used to support and limit the main body of the outer door panel in the Y direction. The suction cup assembly includes multiple suction cups 14, which can be used to absorb the outer door panel and thereby position the outer door panel in the Y direction. Preferably, the multiple suction cups 14 are concentrated on the panel area of ​​the outer door panel, thereby ensuring stable absorption of the outer door panel. The window frame area of ​​the outer door panel can be fully supported by the contour surface 3, and suction cups are not required. The suction cups 14 are connected to the mounting plate 1 via suction cup connectors 15. The number of suction cups 14 on each mold body 2 is preferably six, and the suction cups 14 are swinging suction cups. The angle of the suction cups 2 can be adjusted according to the actual state of the outer door panel to ensure that the suction cups 14 can stably absorb the outer door panel. The stopper assembly includes multiple stoppers 16, which cooperate with the suction cup 14 to limit the position of the outer door panel in the suction cup's suction direction. Specifically, the stoppers 16 abut the outer door panel in the Y direction. Through the abutment of the stoppers 16 against the outer door panel's main body and the suction cup 14's suction, the outer door panel is held tightly against the stoppers 16, providing support and preventing it from sinking and deforming due to gravity. The stoppers 16 can be made of nylon, increasing the accuracy of the hemming process. During both manual hemming and machine hemming operations, the suction cup 14 and stoppers 16 can be used to position the outer door panel in the Y direction. This effectively avoids the poor and unstable precision caused by laser trimming of stamped parts during the trial production phase, ensuring the proper adjustment of the door hemming process and correcting defects during the hemming process, ensuring smooth door hemming.

[0049] In this embodiment, the positioning plate 11 is connected to the mounting plate 1 by bolts, and its position on the mounting plate 1 is adjustable. During the hemming operation, the outer door panel and the inner door panel are placed on the contour surface 3, and the positioning plate 11 is used to position the inner door panel. The gap is measured using a measuring tool. If the positioning plate 11 needs to be adjusted, the outer door panel and the inner door panel are removed, and the position of the positioning plate 11 is adjusted according to the measured value, and then the door panel is placed on the contour surface 3. The edge positioning of the inner door panel is selected from the window hole to avoid structural conflict and interference. The positioning plate 11 is preferably set to 4, and the position is as follows: Figure 2 As stated.

[0050] In one embodiment, a first pad support 17 is provided between the pressing block 6 and the movable part 5, a pad 18 is provided on the contact surface between the first pad support 17 and the movable part 5, and a pad 18 is provided on the contact surface between the first pad support 17 and the pressing block 6. By adjusting the number of pads 18, the position of the pressing block 6 can be adjusted to ensure that the pressing block 6 can accurately abut against the inner door panel. The shape of the head of the pressing block 6 must be processed according to the shape of the product, refer to Figure 10 、 Figure 11 as well as Figure 12 The pressing block 6 and the standing pile assembly 4 together form a pressing block standing pile assembly 36.

[0051] In this embodiment, the standing pile assembly 4 includes a driving device 19 and a connecting device 20. The driving device 19 is fixedly connected to the connecting device 20. The driving device 19 is preferably a driving cylinder. The movable part 5 is connected to the driving end of the driving device 19, and the connecting device 20 is connected to the mounting plate 1. Preferably, the movable part 5 is connected to the driving device 19 through a rotating shaft, and the movable part 5 can rotate relative to the driving device 19. The inner and outer door panels are clamped by the driving device 19 and the clamping block 6. The clamping block 6 directly abuts against the inner door panel. Here, the clamping block 6 clamps the RPS (REFERENZ-PUCKT-SYSTEM, positioning reference point system) point position of the inner door panel (the RPS point is selected according to the GD&T drawing), completing the Y-axis positioning of the inner door panel.

[0052] In one embodiment, the first outer door panel positioning block 7, the second outer door panel positioning block 8, the third outer door panel positioning block 9, and the fourth outer door panel positioning block 10 are all telescopic positioning blocks 21, and the X-direction outer panel positioning assembly and the Z-direction outer panel positioning assembly also include a standing-type positioning block 22, wherein the telescopic positioning block 21 is connected to the telescopic end of the telescopic device, and the standing-type positioning block 22 is connected to the movable part 5 via a second pad support 23. Pads 18 are provided on the contact surface of the second pad support 23, and pads 18 are provided on the contact surface of the second pad support 23, the movable part 5, and the standing-type positioning block 22. By adjusting the number of pads 18, the position of the standing-type positioning block 22 can be adjusted. When manual hemming is performed, the telescopic positioning block 21 can be controlled to retract into the telescopic device to avoid interference between the telescopic positioning block 21 and the hemming operation. At the same time, the driving device 19 can drive the standing-type positioning block 22 to move through the movable part 5 to avoid interference with the hemming operation. Preferably, the first outer door panel positioning block 7 includes two telescopic positioning blocks 21, and the second outer door panel positioning block 8 includes two telescopic positioning blocks 21, which are symmetrically distributed on both sides of the symbol surface 3. The third outer door panel positioning block 9 and the fourth outer door panel positioning block 10 each include two symmetrically distributed telescopic positioning blocks 21. In addition, the top of the telescopic positioning block 21 adopts an R15 arc transition to ensure that the protruding positioning portion is more than 5 mm. The standing pile type positioning block 22 and the standing pile assembly 4 constitute a positioning block standing pile assembly 35.

[0053] In this embodiment, the retractable device includes a positioning block housing 24, wherein the positioning block housing 24 is provided with a housing cavity, through which the telescopic positioning block 21 can be accommodated. The housing cavity is provided with a sliding entrance for the telescopic positioning block 21 to slide into, and the housing cavity and the telescopic positioning block 21 are connected by a return spring 25. Preferably, the return spring 25 is provided in the housing cavity. When the hemming operation is performed, the telescopic positioning block 21 can be pressed into the positioning block housing 24 to prevent the telescopic positioning block 21 from interfering with the hemming operation. When the limit on the telescopic positioning block 21 is released, the telescopic positioning block 21 can be extended outward under the action of the return spring 25 to position the outer door panel.

[0054] In this embodiment, a third pad support 26 and a flip support 27 are connected between the inner door panel locating pin 13 and the movable part 5. The flip support 27 can be flipped to a certain extent under the driving action of the movable part 5, so as to adjust the position of the inner door panel locating pin 13. The other end of the flip support 27 is movably engaged with the connecting device 20. Pads 18 are provided on the third pad support 26. The position of the inner door panel locating pin 13 is adjusted by changing the number of pads 18. A flip handle 28 is provided on the third pad support 26. The operator can drive the flip support 27 to move by the flip handle 28 to adjust the position of the inner door panel locating pin 13. The inner door panel locating pin 13 and the standing pile assembly 4 constitute a positioning pin standing pile assembly 37.

[0055] In this embodiment, multiple outer door panel sensors 29 are provided on the mold body 2. Preferably, two outer door panel sensors 29 are provided to detect the installation position of the outer door panel. An inner door panel sensor 30 is provided on the reversible support member 27 to detect the installation position of the inner door panel. After completing the positioning of the outer door panel and the inner door panel in three directions, the outer door panel sensor 29 and the inner door panel sensor 30 are used to determine whether the outer door panel and the inner door panel are assembled in place; if the outer door panel or the inner door panel is not assembled in place, the signal sensor will light up red. At this time, it is necessary to manually determine the cause of the fault at the corresponding sensor and eliminate the fault. When the signal sensor lights up green, the robot automatically completes the hemming action of the inner and outer panels of the car door according to the preset program. After the robot returns to its position, the manual inspection is carried out on the hemming status around the car door. After confirming that the hemming is intact, all the inner door panel positioning pins 13, outer door panel positioning pins 12 and the clamping mechanism are opened, and the car door assembly is manually removed. At this time, the car door robot hemming is completed.

[0056] In this embodiment, a 12mm-15mm wide and 45° angle robot hemming head avoidance space is set on the outer edge of the circumference of the mold body 2, and the wall thickness of the working part of the mold body 2 for hemming is guaranteed to be more than 25mm.

[0057] In one embodiment, the hemming jig further includes a support base 31, on which are mounted left and right door panel jig supports 32 and 33. Each of the left and right door panel jig supports 32 and 33 is mounted with a mounting plate 1, a Y-axis clamping mechanism, a manual hemming positioning unit, and a machine hemming positioning unit. A motor 34 is mounted on the support base 31, connected to the left and right door panel jig supports 32 and 33 via a gear transmission mechanism. Driven by the motor 34, the angles of the left and right door panel jig supports 32 and 33 can be adjusted. The left and right door panel jig supports 32 and 33 are directly connected to the mounting plate 1, enabling simultaneous hemming of both doors. Bolts or pins connect the mounting plate 1 to the Y-axis clamping mechanism, manual hemming positioning unit, and machine hemming positioning unit to ensure secure connections.

[0058] In one embodiment, the outer door panel locating pin 12 and the inner door panel locating pin 13 are inserted into the sheet metal (corresponding door panel) by more than 5 mm. The outer door panel sensor 29 and the inner door panel sensor 30 are within 5 mm of the sheet metal. A plurality of groups of connecting beams 38 are provided in the mold body 2. The connecting beams 38 are arranged in a frame structure. The connecting beams 38 are staggered in the horizontal and vertical directions. Lifting ears 39 are provided at the intersection of the connecting beams 38, and lifting operations are performed through the lifting ears 39. Among them, the limit block 16 and the outer door panel locating pin 12 can both be set on the connecting beam 38. At the same time, the outer door panel locating pin 12 can also be connected to the mounting plate 1 through the locating pin connector 40. The angle of the outer door panel locating pin 12 on the locating pin connector 40 is adjustable. The locating pin connector 40 is connected to the outer door panel locating pin 12 through the gasket 18. The position of the outer door panel locating pin 12 can be adjusted by adjusting the number of gaskets 18.

[0059] Embodiment 2 includes the composite hemming jig for vehicle doors in embodiment 1. This embodiment provides a hemming method using the composite hemming jig for vehicle doors in embodiment 1.

[0060] S1. Place the outer door panel on the contour surface 3. The contour surface 3 preferably fits the outer door panel completely.

[0061] S2. Adjust the distance between the first outer door panel positioning block 7 and the second outer door panel positioning block 8 to position the outer door panel in the X direction through the first outer door panel positioning block 7 and the second outer door panel positioning block 8; adjust the distance between the third outer door panel positioning block 9 and the fourth outer door panel positioning block 10 to position the outer door panel in the Z direction through the third outer door panel positioning block 9 and the fourth outer door panel positioning block 10; during the trial production stage, the parts of the vehicle door outer panel assembly are unstable, and the positioning accuracy of the outer door panel in the X and Z directions can be calibrated by adjusting the standing block positioning block 22 in the standing block assembly 35;

[0062] S3. Place the inner door panel into the flange of the outer door panel, preferably manually. Whether the inner door panel is properly placed is determined based on whether there is no obvious interference between the inner door panel and the flange of the outer door panel.

[0063] S4. Adjust the distance between the positioning plates 11 to position the inner door panel in the X and Z directions through the positioning plates 11. Since the parts of the inner door panel are unstable during the trial production stage, the positioning accuracy of the inner door panel can be calibrated by adjusting the positioning plates 11.

[0064] S5, the movable member 5 of the standing pile assembly 4 drives the pressing block 6 to abut against the inner door panel in the Y direction, pressing the inner door panel and the outer door panel tightly, so that the inner and outer door panels are fully positioned;

[0065] S6. Workers use hemming hammers to manually hem the door until all four edges are fitted to the inner panel without any obvious overlap, bulging, or deformation, thus completing the door assembly.

[0066] S7. Open the Y-axis clamping mechanism, adjust the manual hemming positioning unit and the machine hemming positioning unit, and remove the door assembly after the manual hemming operation is completed;

[0067] S8, placing the outer door panel on the symbol surface 3, which can be done manually;

[0068] S9. Position the positioning holes on the outer door panel using the outer door panel positioning pins 12; position the outer door panel in the X and Z directions; and limit the outer door panel in the Y direction using the cooperation of the limit block 16 and the suction cup 14;

[0069] S10. Place the inner door panel into the flange of the outer door panel, and adjust the periphery of the inner door panel so that all four sides thereof are inside the flange of the outer door panel;

[0070] S11. Adjust the position of the inner door panel positioning pin 13 so that the inner door panel positioning pin 13 is inserted into the corresponding positioning hole of the inner door panel; position the inner door panel in the X direction and the Z direction through the inner door panel positioning pin 13;

[0071] S12, the movable member 5 of the standing pile assembly 4 drives the pressing block 6 to abut against the inner door panel in the Y direction, pressing the inner door panel and the outer door panel tightly, and controlling the Y direction of the inner and outer door panels;

[0072] S13. Determine whether the outer door panel and the inner door panel are properly assembled by using the outer door panel sensor 29 and the inner door panel sensor 30. If the outer door panel or the inner door panel is not properly assembled, the signal sensor lights up red, and the cause of the fault at the corresponding sensor is manually determined and corrected.

[0073] S14: The signal sensor lights up green, and the robot automatically completes the hemming of the inner and outer door panels according to the preset program;

[0074] S15. After confirming that the hemming is intact, open the outer door panel positioning pins 12 and the inner door panel positioning pins 13, open the Y-axis clamping mechanism, and manually remove the door assembly.

[0075] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0076] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A composite hemming jig for a vehicle door, characterized in that: include: Mounting plate (1); The Y-axis clamping mechanism comprises a mold body (2) and a pressing block (6); the mold body (2) comprises a mounting surface and a contour surface (3) for supporting an outer door panel; the mounting surface is opposite to the contour surface (3), and the mounting surface is mounted on the surface of the mounting plate (1); the connecting line between the pressing block (6) and the contour surface (3) is along the thickness direction of the outer door panel placed on the contour surface (3); A standing pile assembly (4) includes a movable part (5) that moves along the thickness direction of the outer door panel placed on the symbol-shaped surface (3), the standing pile assembly (4) being connected to the mounting plate (1); and the pressing block (6) being connected to the movable part (5); A manual hemming positioning unit comprises an X-direction outer panel positioning assembly, a Z-direction outer panel positioning assembly and an inner panel positioning assembly, wherein the X-direction outer panel positioning assembly comprises a first outer door panel positioning block (7) and a second outer door panel positioning block (8) with adjustable distances, wherein the first outer door panel positioning block (7) and the second outer door panel positioning block (8) are arranged on both sides of the outer door panel along the length direction of the outer door panel; the Z-direction outer panel positioning assembly comprises a third outer door panel positioning block (9) and a fourth outer door panel positioning block (10) with adjustable distances, wherein the third outer door panel positioning block (9) and the fourth outer door panel positioning block (10) are arranged on both sides of the outer door panel along the width direction of the outer door panel; the inner panel positioning assembly comprises a plurality of positioning support plates (11) distributed along the width direction and the length direction of the inner door panel, wherein the positioning support plates (11) comprise inner door panel abutting ends for abutting against the inner door panel; The machine edge wrapping positioning unit comprises an outer door panel positioning pin (12) corresponding to the positioning hole of the outer door panel and an inner door panel positioning pin (13) corresponding to the positioning hole of the inner door panel; the outer door panel positioning pin (12) is located in the thickness direction of the outer door panel placed on the contour surface (3); and the inner door panel positioning pin (13) is connected to the movable part (5).

2. The vehicle door composite hemming jig according to claim 1, characterized in that: The invention also includes a suction cup assembly and a limit block assembly, wherein the suction cup assembly includes a plurality of suction cups (14) for adsorbing the outer door panel, and the suction cups (14) are connected to the mounting plate (1) via suction cup connectors (15); and the limit block assembly includes a plurality of limit blocks (16) for abutting against the outer door panel in the adsorption direction of the suction cups (14), and the limit blocks (16) are connected to the mold body (2).

3. The vehicle door composite hemming jig according to claim 1, characterized in that: A first pad support member (17) is provided between the pressing block (6) and the movable member (5), and pads (18) are provided on the contact surfaces of the first pad support member (17), the movable member (5) and the pressing block (6).

4. The composite hemming jig for vehicle doors according to claim 3, characterized in that: The standing pile assembly (4) includes a fixedly connected driving device (19) and a connecting device (20), the movable part (5) is connected to the output end of the driving device (19), the connecting device (20) is fixedly connected to the mounting plate (1), and the output end of the driving device (19) is connected to the movable part (5).

5. The composite hemming jig for vehicle doors according to claim 4, characterized in that: The first outer door panel positioning block (7), the second outer door panel positioning block (8), the third outer door panel positioning block (9) and the fourth outer door panel positioning block (10) are all telescopic positioning blocks (21); the X-direction outer panel positioning assembly and the Z-direction outer panel positioning assembly also include a standing pile type positioning block (22), and the telescopic positioning block (21) is connected to the telescopic end of the telescopic device; the standing pile type positioning block (22) is connected to the movable part (5) through a second pad support (23), and pads (18) are provided on the fitting surfaces of the second pad support (23), the movable part (5) and the standing pile type positioning block (22).

6. The vehicle door composite hemming jig according to claim 5, characterized in that: The telescopic device comprises a positioning block accommodating body (24), wherein the positioning block accommodating body (24) is provided with an accommodating cavity for accommodating the telescopic positioning block (21), the accommodating cavity is provided with a sliding entrance for the telescopic positioning block (21) to slide into, and the accommodating cavity and the telescopic positioning block (21) are connected via a return spring (25).

7. The vehicle door composite hemming jig according to claim 6, characterized in that: A third pad support member (26) and a reversible support member (27) are connected between the inner door panel positioning pin (13) and the movable member (5); a pad (18) for adjusting the position of the inner door panel positioning pin (13) is provided on the third pad support member (26); and a reversing handle (28) for driving the reversible support member (27) to move is provided on the third pad support member (26).

8. The vehicle door composite hemming jig according to claim 7, characterized in that: The mold body (2) is provided with a plurality of outer door panel sensors (29) for detecting the installation position of the outer door panel, and the reversible support member (27) is provided with an inner door panel sensor (30) for detecting the installation position of the inner door panel.

9. The vehicle door composite hemming jig according to claim 1, characterized in that: The invention also includes a support base (31), on which a left door panel mold support member (32) and a right door panel mold support member (33) are provided; the left door panel mold support member (32) and the right door panel mold support member (33) are both installed with the mounting plate (1), the Y-axis clamping mechanism, the manual hemming positioning unit, and the machine hemming positioning unit.

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