Vehicle door composite edge covering mould and edge covering method thereof

Abstract

The invention provides a vehicle door composite edge covering mould and an edge covering method thereof, and relates to the technical field of vehicle door edge covering. 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 invention relates to the technical field of vehicle door hemming, and in particular to a vehicle door composite hemming jig and an hemming method thereof. Background Art

[0002] Car doors are made of inner and outer panels. The inner and outer panels are usually formed by stamping and drawing thin steel plates with high elongation. The outer panels usually have a certain width of edges to be wrapped along the perimeter. Before the hemming operation, the inner and outer panels need to be fitted along the perimeter. The outer panel's edge to be wrapped can accommodate the inner panel, and the inner and outer panel composite parts are hemmed and formed using hemming equipment.

[0003] Car door hemming can be divided into two forms: manual hemming and robot hemming. When the car door is in the trial production stage and the mass production stage, there are great differences in stability and dimensional accuracy. In view of the differences in stability and dimensional accuracy of products at different stages, the two jigs are required to have different positioning structures, material selection, and hemming methods. At present, manual hemming jigs are used in the car doors in the trial production stage, and robot hemming jigs are used in the mass production stage. Manual hemming in the trial production stage requires that the hemming jigs be adjustable in the X and Z directions. On the contrary, robot hemming in the mass production stage requires that the hemming jigs be accurately and reliably positioned. Therefore, the robot hemming jigs in the mass production stage use precise positioning methods such as hole positioning.

[0004] Since different jigs are used in the trial production stage and the batch production stage, the size accuracy cannot be guaranteed due to the jig replacement. When switching from the manual jig to the robot jig, the jig needs to be debugged and matched, which has a large workload and prolongs the development cycle. In addition, switching different jigs at different stages requires frequent manual switching of jigs, which causes serious complaints from production workers, reduces production efficiency and increases production cycle.

[0005] Therefore, it is urgent to propose a hemming jig that can integrate the manual hemming jig and the robot rolling hemming jig, so that one jig can be used for the hemming operations of car doors in the trial production and mass production stages, meet the technical requirements of the manual hemming jig and the robot rolling hemming jig, shorten the development cycle, reduce development costs, and improve production efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a composite hemming jig for vehicle doors and a hemming method thereof, so as to solve the problems existing in the above-mentioned prior art, integrate the manual hemming jig and the robot rolling jig, and use one jig for both the manual hemming operation in the trial production stage and the machine hemming operation of vehicle doors in the mass production stage, thereby reducing development costs and improving production efficiency.

[0007] To achieve the above-mentioned objectives, the present invention provides the following solutions: a composite door hemming jig is provided, comprising: a mounting plate; a Y-axis clamping mechanism, comprising a jig body and a clamping block, the jig body comprising a mounting surface and a contour surface for supporting an 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 clamping 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 clamping block being connected to the movable part; a manual hemming 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 Position 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 the 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 hemming 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 cup is connected to the mounting plate via a suction cup connector; 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 mating surfaces of the first pad support, the movable member and the pressing block.

[0010] Preferably, the standing pile assembly includes a driving device and a connecting device that are fixedly connected, 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 mating surfaces of the second pad support, the movable part and the standing pile type positioning block.

[0012] Preferably, the retractable 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 jig support and a right door panel jig support are provided; the mounting plate, the Y-axis clamping mechanism, the manual edge wrapping positioning unit and the machine edge wrapping positioning unit are both installed on the left door panel jig support and the right door panel jig support.

[0016] A hemming method using an hemming jig:

[0017] S1, placing the outer door panel on the symbol-shaped surface;

[0018] S2, adjusting the distance between the first outer door panel positioning block and the second outer door panel positioning block, and positioning the outer door panel in the X direction through the first outer door panel positioning block and the second outer door panel positioning block; adjusting the distance between the third outer door panel positioning block and the fourth outer door panel positioning block, and positioning the outer door panel in the Z direction through the third outer door panel positioning block and the fourth outer door panel positioning block;

[0019] S3, placing the inner door panel into the flange of the outer door panel;

[0020] S4, adjusting the distance between the positioning plates, and positioning the inner door panel in the X direction and the Z direction through the positioning plates;

[0021] S5, the movable part of the standing pile assembly drives the pressing block to abut against the inner door panel in the Y direction, pressing the inner door panel and the outer door panel;

[0022] S6. Perform manual hemming operation using an hemming hammer to form a door assembly;

[0023] S7, opening the Y-axis clamping mechanism, and removing the door assembly after the manual hemming operation is completed;

[0024] S8, placing the outer door panel on the symbol-shaped surface;

[0025] S9, positioning the positioning hole on the outer door panel by the outer door panel positioning pin; positioning the outer door panel in the X direction and the Z direction;

[0026] S10, placing the inner door panel into the flange of the outer door panel, and adjusting the four sides of the inner door panel to fully enter the flange of the outer door panel;

[0027] S11, adjusting the position of the inner door panel positioning pin so that the inner door panel positioning pin is inserted into the corresponding positioning hole of the inner door panel; positioning the inner door panel in the X direction and the Z direction by the inner door panel positioning pin;

[0028] S12, the movable part of the standing pile assembly drives the pressing block to abut against the inner door panel in the Y direction, so as to press the inner door panel and the outer door panel;

[0029] S13. The robot completes the hemming of the inner and outer panels of the door.

[0030] Compared with the prior art, the present invention has achieved the following technical effects:

[0031] The outer door panel is supported by the jig body, 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. There is no 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 robot hemming jig. One jig can be used for manual hemming operations in the trial production stage and machine hemming operations of car doors in the mass production stage, meeting the technical requirements of manual hemming jigs and robot hemming jigs, ensuring the efficiency and stability of hemming of inner and outer panels, shortening the development cycle, reducing development costs, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative labor.

[0033] Figure 1 This is a schematic diagram of the general assembly structure of the tire body of the present invention;

[0034] Figure 2 It is a schematic top view of the tire body of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the tire body of the present invention;

[0036] Figure 4 It is a schematic diagram of another viewing angle of the tire main body structure of the present invention;

[0037] Figure 5 It is a schematic diagram of the Y-axis clamping mechanism of the present invention;

[0038] Figure 6 This is a schematic diagram of the positioning pin stand assembly of the present invention;

[0039] Figure 7 It is a schematic diagram of the positioning pin stand assembly of the present invention from another perspective;

[0040] Figure 8 It is a schematic diagram of the suction cup assembly of the present invention;

[0041] Fig. 9 This is a schematic diagram of the positioning block standing pile assembly of the present invention;

[0042] Fig.10 This is a schematic diagram of the structure of the pad of the present invention;

[0043] Fig.11 This is a schematic diagram of the structure of the first compression block of the present invention;

[0044] Fig.12 This is a schematic diagram of the structure of the second compression block of the present invention;

[0045] Fig.13 This is a schematic diagram of the structure of the third compression block of the present invention;

[0046] Fig.14 This is a schematic diagram of the structure of the telescopic positioning block of the present invention;

[0047] Fig.15 It is a schematic diagram of another viewing angle of the telescopic positioning block structure of the present invention;

[0048] Fig.16 This is a schematic diagram of the structure of the positioning pin connector of the present invention;

[0049] Fig.17 It is a schematic diagram of another viewing angle of the positioning pin connector structure of the present invention;

[0050] Fig.18 This is a schematic diagram of the mounting plate structure of the present invention;

[0051] Fig.19 This is a schematic diagram of the overall structure of the support base of the present invention;

[0052] Fig. 20 It is a schematic diagram of the general assembly structure of the present invention;

[0053] Fig.21 It is a left side schematic diagram of the general assembly structure of the present invention;

[0054] Fig. 22 It is a right side schematic diagram of the general assembly structure of the present invention.

[0055] Among them, 1. mounting plate; 2. mold body; 3. shape surface; 4. standing pile assembly; 5. movable part; 6. clamping 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 connecting piece; 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 receiving body; 25. Return spring; 26. Third pad support; 27. Flippable 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-pile assembly; 36. Pressing block standing-pile assembly; 37. Positioning pin standing-pile assembly; 38. Connecting beam; 39. Lifting ear; 40. Positioning pin connector. DETAILED DESCRIPTION

[0056] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0057] 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 embodiments.

[0058] 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 to form 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.

[0059] Embodiment 1: In this embodiment, a composite hemming jig for a vehicle door is provided, comprising a mounting plate 1, a pile assembly 4, a Y-direction clamping mechanism, a manual hemming positioning unit, and a machine hemming positioning unit. The Y-direction clamping mechanism comprises a jig body 2, on which a shape surface 3 is provided, which matches the shape of the outer door panel, and the outer door panel is supported by the shape surface 3; the mounting end of the pile assembly 4 is preferably connected to the mounting plate 1, and a movable part 5 is provided on the pile assembly 4, and the movable part 5 moves along the thickness direction of the outer door panel and the inner door panel placed on the shape surface 3. A mounting surface is provided on the side of the jig body 2 away from the shape surface 3, and the mounting surface of the jig body 2 is provided on the mounting plate 1, and the jig body 2 is supported by the mounting plate 1. The outer door panel and the inner door panel can be pressed by the pressing block 6. The connecting line between the pressing block 6 and the shape surface 3 is along the thickness direction of the outer door panel placed on the shape surface 3, that is, the thickness direction of the outer door panel is the Y direction. The clamping block 6 is connected to the movable member 5, and the clamping block 6 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 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 can be adjusted, and 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 (height) direction of the outer door panel; the inner panel positioning assembly includes a plurality of positioning support plates 11, and the positioning support plates 11 are distributed along the width direction and the length direction of the inner door panel, that is, the X direction and the Z direction, and the positioning support plates 11 include an inner door panel abutting end, and the inner door panel is abutted with the inner door panel through the inner door panel abutting end to position the inner door panel. Preferably, the positioning support plate 11 is connected to the mounting plate 1 on the side away from the inner door panel abutting. The machine 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. The outer door panel positioning pin 12 is located in the supporting direction of the outer door panel by the shape surface 3, that is, the outer door panel positioning pin 12 is located in the thickness direction of the outer door panel placed on the shape surface 3; the outer door panel positioning pin 12 can be inserted into the positioning hole on the outer door panel. The inner door panel positioning pin 13 corresponds to the positioning hole on the inner door panel, and the inner door panel positioning pin 13 is connected to the movable part 5 of the pile assembly 4. The inner door panel positioning pin 13 can move along the thickness direction of the outer door panel and the inner door panel placed on the shape 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.

[0060] Working principle: Place the outer door panel on the contour surface 3 of the mold body 2, and support the outer door panel through the contour surface 3; preferably, the contour surface 3 encloses a cavity that matches the shape of the outer door panel, and the contour surface 3 can be completely fitted with the outer door panel. When the car door is in the trial production stage, the hemming operation is carried out by manual hemming, and the outer door panel and the inner door panel are positioned by the manual hemming positioning unit, and the outer door panel is placed on the contour surface 3. At this time, the distance between the first outer door panel positioning block 7 and the second outer door panel positioning block 8 is adjusted, and the outer door panel is positioned in the X direction, and the distance between the third outer door panel positioning block 9 and the fourth outer door panel positioning block 10 is adjusted, and the outer door panel is positioned in the Z direction; preferably, the flanged surface of the outer door panel contacts the corresponding outer door panel positioning block to achieve rough positioning of the outer door panel. After that, the inner door panel is placed in 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 and avoid 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 flanges around 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. 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 can be positioned in the X and Z directions by the outer door panel positioning pins 12; thereafter, 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 inner door panel positioning pins 13 can be driven to move by the corresponding movable parts 5 of the standing pile assembly 4, 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 pin 12 and the inner door panel locating pin are both inserted into the corresponding outer door panel locating hole and the inner door panel locating hole in the thickness direction; thereafter, the movable part 5 of the standing pile assembly 4 drives the clamping block 6 to move, and the inner door panel is pressed into place, and the Y direction of the inner and outer door panels is limited, so that the inner and outer door panels are 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 of 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 components are opened, and the car door assembly is manually removed. At this time, the robot hemming of the car door is completely completed.

[0061] 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, which meets the requirements and specifications of manual hemming. There is no need to switch the jig body. The inner and outer door panels in the batch 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 robot hemming jig. One jig can be used for the hemming operation of the door in the trial production stage and the batch production stage, meeting the technical requirements of the manual hemming jig and the robot hemming jig, ensuring the efficiency and stability of the hemming of the inner and outer panels, shortening the development cycle, reducing development costs, and improving production efficiency.

[0062] In one embodiment, the outer peripheral edge position of the outer door panel is supported by the symbol surface 3, and the composite edging mold for the door further includes a suction cup assembly and a limit block assembly, which are preferably arranged on the inner side of the symbol 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 a plurality of suction cups 14, through which the outer door panel can be adsorbed, so as to position the outer door panel in the Y direction. Preferably, a plurality of suction cups 14 are concentratedly arranged on the plate surface area of ​​the outer door panel, so that the outer door panel can be stably adsorbed, and the window frame area of ​​the outer door panel can be fully supported by the symbol surface 3, so that no suction cup is required. The suction cup 14 is connected to the mounting plate 1 through a suction cup connector 15. The number of suction cups 14 on each mold body 2 is preferably 6, and the suction cup 14 is a swinging suction cup, and the angle of the suction cup 2 can be adjusted according to the actual state of the outer door panel to ensure that the suction cup 14 can stably adsorb the outer door panel. The limit block assembly includes a plurality of limit blocks 16, which can cooperate with the adsorption effect of the suction cup 14, and the outer door panel can be limited in the adsorption direction of the suction cup through the limit blocks 16. That is, the limit blocks 16 can abut against the outer door panel in the Y direction; through the abutment effect of the limit blocks 16 on the outer door panel body and the adsorption effect of the suction cup 14, the outer door panel can be closely attached to the limit blocks 16 to support the outer door panel, and can also prevent the outer door panel from sinking and deforming due to gravity. The limit blocks 16 can be made of nylon material; the accuracy during the hemming operation is increased. During manual hemming and machine rolling operations, the outer door panel can be positioned in the Y direction through the cooperation of the suction cup 14 and the limit blocks 16. It can effectively avoid the poor accuracy and unstable accuracy caused by laser trimming of stamping parts in the trial production stage, ensure the adjustment amount of the door hemming and the defect repair of the hemming process, so that the door hemming can be carried out smoothly.

[0063] 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 profile 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 profile surface 3. The edge positioning of the inner door panel selects 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 described.

[0064] In one embodiment, a first pad support 17 is provided between the clamping 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 clamping block 6. By adjusting the number of pads 18, the position of the clamping block 6 can be adjusted to ensure that the clamping block 6 can accurately abut against the inner door panel. The shape of the head of the clamping block 6 must be processed according to the shape of the product, refer to Fig.10 , Fig.11 as well as Fig.12 The pressing block 6 and the standing pile assembly 4 together form a pressing block standing pile assembly 36.

[0065] In this embodiment, the 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, and 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.

[0066] 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 pile positioning block 22, wherein the telescopic positioning block 21 is connected to the telescopic end of the telescopic device, the standing pile positioning block 22 is connected to the movable part 5 through the second pad support 23, and the second pad support 23 is provided with a pad 18 on the fitting surface, and the second pad support 23 is provided with a pad 18 on the fitting surface of the movable part 5 and the standing pile positioning block 22. By adjusting the number of pads 18, the position of the standing pile positioning block 22 can be adjusted. When performing manual hemming operation, 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 pile 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.

[0067] In this embodiment, the retractable device includes a positioning block housing 24, in which a housing cavity is provided, through which the telescopic positioning block 21 can be accommodated, and 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 reset spring 25. Preferably, the reset 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 avoid interference between the telescopic positioning block 21 and the hemming operation. When the limit of the telescopic positioning block 21 is released, under the action of the reset spring 25, the telescopic positioning block 21 can extend outward to position the outer door panel.

[0068] In this embodiment, a third pad support 26 and a reversible support 27 are connected between the inner door panel locating pin 13 and the movable part 5. The reversible 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 reversible 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 reversing handle 28 is provided on the third pad support 26. The operator can drive the reversible support 27 to move by the reversing 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.

[0069] In this embodiment, a plurality of outer door panel sensors 29 are provided on the mold body 2. Preferably, two outer door panel sensors 29 are provided, and the installation position of the outer door panel is detected by the outer door panel sensors 29. An inner door panel sensor 30 is provided on the flip support 27, and the installation position of the inner door panel is detected by the inner door panel sensor 30. 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 properly assembled; if the outer door panel or the inner door panel is not properly assembled, the signal sensor will light up red, and 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 hemming status of the car door is manually checked. 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 robot hemming of the car door is completely completed.

[0070] In this embodiment, a robot hemming head avoidance space with a width of 12mm-15mm and an angle of 45° is provided on the outer edge of the circumference of the jig body 2, and the wall thickness of the working part of the jig body 2 for hemming work is guaranteed to be more than 25mm.

[0071] In one embodiment, the edge wrapping jig further comprises a support base 31, on which a left door panel jig support 32 and a right door panel jig support 33 are arranged; the left door panel jig support 32 and the right door panel jig support 33 are both installed with a mounting plate 1, a Y-axis clamping mechanism, a manual edge wrapping positioning unit and a machine edge wrapping positioning unit. A motor 34 is arranged on the support base 31, and the motor 34 is respectively connected to the left door panel jig support 32 and the right door panel jig support 33 through a gear transmission structure, and the angle of the left door panel jig support 32 and the right door panel jig support 33 can be adjusted by the drive of the motor 34. The left door panel jig support 32 and the right door panel jig support 33 are directly connected to the mounting plate 1 to realize the function of wrapping the left and right doors at the same time. The mounting plate 1 is connected to the Y-axis clamping mechanism, the manual edge wrapping positioning unit and the machine edge wrapping positioning unit by bolts or pins to ensure the stability of the connection.

[0072] 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 arranged in a staggered manner in the transverse and longitudinal 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 stopper 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.

[0073] Embodiment 2 includes the composite hemming jig for vehicle doors in Embodiment 1. This embodiment provides an hemming method using the composite hemming jig for vehicle doors in Embodiment 1.

[0074] S1, placing the outer door panel on the shape surface 3, the shape surface 3 preferably completely fits with the outer door panel;

[0075] S2. Adjust the distance between the first outer door panel positioning block 7 and the second outer door panel positioning block 8, and 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, and 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; in the trial production stage, the state of the parts of the vehicle door outer panel assembly is unstable, and the positioning accuracy of the outer door panel in the X and Z directions can be calibrated by adjusting the standing pile type positioning block 22 in the positioning block standing pile assembly 35;

[0076] S3, placing the inner door panel into the flange of the outer door panel, preferably by manual loading; judging whether the inner door panel is properly placed based on whether there is no obvious interference when the inner door panel is placed into the flange of the outer door panel;

[0077] S4, adjusting the distance between the positioning plates 11, and positioning the inner door panel in the X direction and the Z direction 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;

[0078] S5, the movable part 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 have been completely positioned;

[0079] S6. The staff uses a hemming hammer to perform manual hemming operations until the flanges on all sides are all fitted to the inner panel without obvious overlap, bulging, deformation, etc., to form a door assembly;

[0080] S7, opening the Y-axis clamping mechanism, adjusting the manual hemming positioning unit and the machine hemming positioning unit at the same time, and removing the door assembly after the manual hemming operation is completed;

[0081] S8, placing the outer door panel on the symbol surface 3, which can be done manually;

[0082] S9, positioning the positioning hole on the outer door panel through the outer door panel positioning pin 12; positioning the outer door panel in the X direction and the Z direction; limiting the outer door panel in the Y direction through the cooperation of the limit stopper 16 and the suction cup 14;

[0083] S10, placing the inner door panel into the flange of the outer door panel, and adjusting the periphery of the inner door panel to fully enter the flange of the outer door panel;

[0084] S11, adjusting 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; positioning the inner door panel in the X direction and the Z direction by the inner door panel positioning pin 13;

[0085] 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, and controlling the Y direction of the inner and outer door panels;

[0086] S13, judging whether the outer door panel and the inner door panel are properly assembled by 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 judged and the fault is eliminated;

[0087] 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;

[0088] S15. After confirming that the hemming is intact, open the outer door panel positioning pin 12 and the inner door panel positioning pin 13, open the Y-axis clamping mechanism, and manually remove the door assembly.

[0089] 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0090] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood 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 clamping 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 plate surface of the mounting plate (1); the connecting line between the clamping block (6) and the contour surface (3) is along the thickness direction of the outer door panel placed on the contour surface (3); The standing pile assembly (4) comprises 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) is connected to the mounting plate (1); the pressing block (6) is connected to the movable part (5); A manual hemming positioning unit comprises an X-direction outer panel positioning component, a Z-direction outer panel positioning component and an inner panel positioning component, wherein the X-direction outer panel positioning component comprises a first outer door panel positioning block (7) and a second outer door panel positioning block (8) with adjustable distance, 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 component comprises a third outer door panel positioning block (9) and a fourth outer door panel positioning block (10) with adjustable distance, 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 component 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 hemming 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 composite hemming jig for vehicle doors according to claim 1, characterized in that: It also comprises a suction cup assembly and a limit block assembly, wherein the suction cup assembly comprises 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); the limit block assembly comprises 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 composite hemming jig for vehicle doors 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) comprises 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) and the movable part (5) and the standing pile type positioning block (22).

6. The composite hemming jig for vehicle doors 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), wherein 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 composite hemming jig for vehicle doors according to claim 6, characterized in that: A third pad support (26) and a flip support (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 (26); and a flip handle (28) for driving the flip support (27) to move is provided on the third pad support (26).

8. The composite hemming jig for vehicle doors 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 flippable support member (27) is provided with an inner door panel sensor (30) for detecting the installation position of the inner door panel.

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

10. A method for hemming using the hemming jig according to any one of claims 1 to 9, characterized in that: S1, placing the outer door panel on the symbol-shaped surface (3); S2, adjusting the distance between the first outer door panel positioning block (7) and the second outer door panel positioning block (8), and positioning the outer door panel in the X direction by means of the first outer door panel positioning block (7) and the second outer door panel positioning block (8); adjusting the distance between the third outer door panel positioning block (9) and the fourth outer door panel positioning block (10), and positioning the outer door panel in the Z direction by means of the third outer door panel positioning block (9) and the fourth outer door panel positioning block (10); S3, placing the inner door panel into the flange of the outer door panel; S4, adjusting the distance between the positioning plates (11), and positioning the inner door panel in the X direction and the Z direction by means of the positioning plates (11); S5, the movable part (5) of the standing pile assembly (4) drives the pressing block (6) to abut against the inner door panel in the Y direction, thereby pressing the inner door panel and the outer door panel; S6. Perform manual hemming operation using an hemming hammer to form a door assembly; S7, opening the Y-axis clamping mechanism, and removing the door assembly after the manual hemming operation is completed; S8, placing the outer door panel on the symbol-shaped surface (3); S9, positioning the positioning hole on the outer door panel by using the outer door panel positioning pin (12); positioning the outer door panel in the X direction and the Z direction; S10, placing the inner door panel into the flange of the outer door panel, and adjusting the four sides of the inner door panel to fully enter the flange of the outer door panel; S11, adjusting 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; positioning the inner door panel in the X direction and the Z direction by the inner door panel positioning pin (13); S12, the movable part (5) of the standing pile assembly (4) drives the pressing block (6) to abut against the inner door panel in the Y direction, thereby pressing the inner door panel and the outer door panel; S13. The robot completes the hemming of the inner and outer panels of the door.

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