A door composite edge covering jig and an edge covering method thereof

Abstract

The application provides a kind of vehicle door composite edge covering jig and its edge covering method, it is related to vehicle door edge covering technical field, the jig body of Y direction clamping mechanism includes symbol surface;The connecting line between pressure block and symbol surface is along the thickness direction of outer door panel;Station pile assembly includes movable piece connected with pressure block, the X direction outer plate positioning assembly of manual edge covering positioning unit includes distance adjustable first outer door panel positioning block and second outer door panel positioning block, and is separately arranged on the two sides of outer door panel along the length of outer door panel;Z direction outer plate positioning assembly includes distance adjustable third outer door panel positioning block and fourth outer door panel positioning block, and is separately arranged on the two sides of outer door panel along the width of outer door panel;Inner plate positioning assembly includes multiple positioning backboards distributed along the width direction and length direction of inner door panel;Machine edge covering positioning unit includes outer door panel positioning pin corresponding with the positioning hole of outer door panel, inner door panel positioning pin corresponding with the positioning hole of inner door panel;Manual edge covering operation and machine edge covering operation can be carried out on one edge covering jig.

Description

Technical Field

[0001] This invention relates to the field of vehicle door edging technology, and in particular to a composite edging fixture for vehicle doors and its edging method. Background Technology

[0002] Car doors are made up of an inner panel and an outer panel. The inner and outer panels are often formed by stamping and drawing thin steel sheets with high elongation. The outer panel usually has a certain width of edging along its perimeter. Before the edging operation, the inner and outer panels need to be attached along their perimeters, and the edging of the outer panel should be able to accommodate the inner panel. The edging equipment is then used to edge and form the composite of the inner and outer panels.

[0003] There are two types of door edging: manual edging and robotic hemming. When a car door is in the trial production stage and the mass production stage, there are significant differences in stability and dimensional accuracy. To address these differences in stability and dimensional accuracy at different stages, the two types of jigs require different positioning structures, material selections, and edging methods. Currently, manual edging jigs are used in the trial production stage, while robotic hemming jigs are used in the mass production stage. Manual edging in the trial production stage requires adjustable positioning in the X and Z directions, while robotic hemming in the mass production stage requires precise and reliable positioning. Therefore, robotic hemming jigs in the mass production stage employ precise positioning methods such as hole positioning.

[0004] Because different hemming jigs are used in the trial production and mass production stages, jig changes lead to inconsistent dimensional accuracy. When switching from manual hemming jigs to robotic hemming jigs, the jigs need to be adjusted and matched, which involves a significant amount of work and extends the development cycle. Furthermore, switching between different jigs at different stages requires frequent manual switching of the hemming jigs, causing serious complaints from production workers, reduced production efficiency, and increased production cycles.

[0005] Therefore, there is an urgent need to develop an edge-sealing fixture that can integrate manual edge-sealing fixtures and robotic edge-sealing fixtures. This fixture can be used for edge-sealing operations on car doors during both the trial production and mass production stages, meeting the technical requirements of both manual edge-sealing fixtures and robotic edge-sealing fixtures, shortening the development cycle, reducing development costs, and improving production efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a composite edge-wrapping fixture for car doors and its edge-wrapping method to solve the problems existing in the prior art. It integrates manual edge-wrapping fixtures and robotic edge-wrapping fixtures, so that both manual edge-wrapping operations in the trial production stage and machine edge-wrapping operations for car doors in the mass production stage can be performed on a single fixture, thereby reducing development costs and improving production efficiency.

[0007] To achieve the above objectives, the present invention provides the following solution: A composite edge-wrapping fixture for a car door, comprising: a mounting plate; a Y-axis clamping mechanism, including a fixture body and a clamping block, the fixture body including a mounting surface and a conforming surface for supporting an outer door panel, the mounting surface being opposite to the conforming surface and the mounting surface being mounted on the surface of the mounting plate; the line connecting the clamping block and the conforming surface being along the thickness direction of the outer door panel placed on the conforming surface; and a support assembly, including a movable component that moves along the thickness direction of the outer door panel placed on the conforming surface. The pile assembly is connected to the mounting plate; the clamping block is connected to the movable part; the manual edge-sealing positioning unit includes an X-direction outer plate positioning assembly, a Z-direction outer plate positioning assembly, and an inner plate positioning assembly. The X-direction outer plate positioning assembly includes a first outer door panel positioning block and a second outer door panel positioning block with adjustable distance. The first outer door panel positioning block and the second outer door panel positioning block are respectively arranged on both sides of the outer door panel along the length direction of the outer door panel; the Z-direction outer plate positioning assembly includes a third outer door panel positioning block and a fourth outer door panel positioning block with adjustable distance. The third outer door panel positioning block and the... The fourth outer door panel positioning block is distributed 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 plates distributed along the width and length directions of the inner door panel, the positioning plates including an inner door panel abutting end for abutting against 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 molded surface; the inner door panel positioning pin is connected to the movable part.

[0008] Preferably, the assembly further includes a suction cup assembly and a limiting 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 via suction cup connectors. The limiting block assembly includes a plurality of limiting blocks for abutting the outer door panel in the suction direction of the suction cups, and the limiting blocks are connected to the fixture body.

[0009] Preferably, a first pad support is provided between the clamping block and the movable part, and a pad is provided on the contact surface of the first pad support, the movable part, and the clamping block.

[0010] Preferably, the pile assembly includes a drive device and a connecting device that are fixedly connected, the movable part is connected to the output end of the drive device, the connecting device is fixedly connected to the mounting plate, and the output end of the drive 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 further include a stationary positioning block, and the telescopic positioning block is connected to the telescopic end of the telescopic device; the stationary positioning block is connected to the movable part through a second pad support member, and pads are provided on the mating surfaces of the second pad support member, the movable part, and the stationary positioning block.

[0012] Preferably, the retractable device includes a positioning block accommodating body, the positioning block accommodating body having a accommodating cavity for accommodating the retractable positioning block, the accommodating cavity having a sliding entrance for the retractable positioning block to slide into, and the accommodating cavity and the retractable positioning block being connected by a return spring.

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

[0014] Preferably, the fixture body is provided with a plurality of outer door panel sensors for detecting the installation position of the outer door panel, and the flip-up 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 support base, on which a left door panel fixture support and a right door panel fixture 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 each installed on the left door panel fixture support and the right door panel fixture support.

[0016] An edge-sealing method using an edge-sealing fixture: S1. Place the outer door panel on the shaped surface; S2. Adjust the distance between the first outer door panel positioning block and the second outer door panel positioning block to position the outer door panel in the X direction using the first outer door panel positioning block and the second outer door panel positioning block; adjust the distance between the third outer door panel positioning block and the fourth outer door panel positioning block to position the outer door panel in the Z direction using the third outer door panel positioning block and the fourth outer door panel positioning block; S3. Place the inner door panel into the flange of the outer door panel; S4. Adjust the distance between the positioning plates to position the inner door panel in the X and Z directions. S5. The movable part of the 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 together. S6. Use an edge-sealing hammer to perform manual edge-sealing operations to form the door assembly; S7. Open the Y-axis clamping mechanism and remove the door assembly that has been manually edged; S8. Place the outer door panel on the shaped surface; S9. Position the positioning holes on the outer door panel using the positioning pins on the outer door panel; position the outer door panel in the X and Z directions. S10. Place the inner door panel into the flange of the outer door panel, and adjust the four sides of the inner door panel to be fully inserted into the flange of the outer door panel. S11. Adjust 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; position the inner door panel in the X and Z directions by means of the inner door panel positioning pin; S12. The movable part of the 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 together. S13. The robot completes the hemming action of the inner and outer panels of the car door.

[0017] The present invention achieves the following technical effects compared to the prior art: The invention integrates a manual edge-sealing fixture and a robotic edge-sealing fixture. The former supports the outer door panel, while the latter positions the inner and outer door panels during the trial production stage. The distance between the positioning blocks on the outer door is adjustable to meet the requirements of manual edge-sealing, eliminating the need to switch fixtures. The latter, using a robotic edge-sealing fixture, can precisely position the inner and outer door panels during mass production, meeting the requirements of robotic edge-sealing. This invention combines a manual edge-sealing fixture and a robotic edge-sealing fixture, allowing for both manual edge-sealing during the trial production stage and robotic edge-sealing during mass production on a single fixture. It meets the technical requirements of both types of fixtures, ensuring the efficiency and stability of inner and outer panel edge-sealing, shortening the development cycle, reducing development costs, and improving production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall assembly structure of the fixture body of the present invention; Figure 2 This is a top view of the body of the fixture of the present invention; Figure 3 This is a schematic diagram of the body structure of the fixture of the present invention; Figure 4 This is a schematic diagram of the body structure of the tire of the present invention from another perspective; Figure 5 This is a schematic diagram of the Y-axis clamping mechanism of the present invention; Figure 6 This is a schematic diagram of the positioning pin pile assembly of the present invention; Figure 7 This is a schematic diagram of the positioning pin pile assembly of the present invention from another perspective; Figure 8 This is a schematic diagram of the suction cup assembly of the present invention; Figure 9 This is a schematic diagram of the positioning block station assembly of the present invention; Figure 10 This is a schematic diagram of the pad structure of the present invention; Figure 11 This is a schematic diagram of the first type of clamping block structure of the present invention; Figure 12 This is a schematic diagram of the second type of clamping block structure of the present invention; Figure 13 This is a schematic diagram of the third type of clamping block structure of the present invention; Figure 14 This is a schematic diagram of the telescopic positioning block structure of the present invention; Figure 15 This is a schematic diagram of the telescopic positioning block structure of the present invention from another perspective; Figure 16 This is a schematic diagram of the positioning pin connector structure of the present invention; Figure 17 This is a schematic diagram of the positioning pin connector structure from another perspective. Figure 18 This is a schematic diagram of the mounting plate structure of the present invention; Figure 19 This is a schematic diagram of the overall structure of the support base of the present invention; Figure 20 This is a schematic diagram of the overall assembly structure of the present invention; Figure 21 This is a left-side view of the assembly structure of the present invention; Figure 22 This is a right-side view of the assembly structure of the present invention.

[0020] The components include: 1. Mounting plate; 2. Fixture body; 3. Conformation surface; 4. Stationary pile assembly; 5. Movable parts; 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 backing plate; 12. Outer door panel positioning pin; 13. Inner door panel positioning pin; 14. Suction cup; 15. Suction cup connector; 16. Limiting block; 17. First pad support; 18. Pad; 19. Drive device; 20. Connecting device; 21. Telescopic positioning block; 2. Stationary positioning block; 23. Second pad support; 24. Positioning block housing; 25. Return spring; 26. Third pad support; 27. Reversible support; 28. Reversible 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 stationary assembly; 36. Pressing block stationary assembly; 37. Positioning pin stationary assembly; 38. Connecting beam; 39. Lifting lug; 40. Positioning pin connector. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Please refer to Figures 1 to 22 As shown, when the car door is assembled on the car, a three-dimensional coordinate system is established based on this, forming the X, Y and Z directions of the car door. The X direction is the length direction of the car door, the Y direction is the thickness direction of the car door, and the Y direction also corresponds to the opening (rotation) direction of the car door on the car body. The Z direction is the width direction (height direction) of the car door.

[0024] Example 1: This example provides a composite edging fixture for a car door, including a mounting plate 1, a support assembly 4, a Y-axis clamping mechanism, a manual edging positioning unit, and a machine edging positioning unit. The Y-axis clamping mechanism includes a fixture body 2, on which a conforming surface 3 is provided. The conforming surface 3 matches the shape of the outer door panel and supports the outer door panel. The mounting end of the support assembly 4 is preferably connected to the mounting plate 1. The support assembly 4 is provided with a movable part 5, which moves along the thickness direction of the outer and inner door panels placed on the conforming surface 3. The fixture body 2 has a mounting surface on the side opposite to the conforming surface 3. The mounting surface of the fixture body 2 is located on the mounting plate 1, which supports the fixture body 2. The outer and inner door panels can be pressed together by the clamping block 6. The line connecting the clamping block 6 and the conforming surface 3 is along the thickness direction of the outer door panel placed on the conforming 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 part 5, and the movable part 5 can drive the clamping block 6 to move. The manual edge-binding 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 multiple first outer door panel positioning blocks 7 and multiple 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. The inner panel positioning assembly includes multiple positioning plates 11, and the positioning plates 11 are distributed along the width and length directions of the inner door panel, i.e., the X direction and the Z direction. The positioning plates 11 include an inner door panel abutment end, which abuts against the inner door panel to position the inner door panel. Preferably, the side of the positioning plate 11 away from the inner door panel abutment end is connected to the mounting plate 1. The machine edge-sealing 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 support direction of the outer door panel on the molded surface 3, that is, in the thickness direction of the outer door panel placed on the molded 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 is connected to the movable part 5 of the stationary 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 molded surface 3 and can be inserted into the positioning hole of the inner door panel to position the inner door panel.

[0025] Working principle: The outer door panel is placed on the conforming surface 3 of the fixture body 2, and the conforming surface 3 supports the outer door panel. Preferably, the conforming surface 3 forms a cavity that matches the shape of the outer door panel, and the conforming surface 3 can completely fit the outer door panel. When the door is in the trial production stage, the edge-wrapping operation is carried out by manual edge-wrapping. The outer door panel and the inner door panel are positioned by the manual edge-wrapping positioning unit. The outer door panel is placed on the conforming 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 to position the outer door panel in the X direction. The distance between the third outer door panel positioning block 9 and the fourth outer door panel positioning block 10 is adjusted to position the outer door panel in the Z direction. Preferably, the flanged surface of the outer door panel contacts the corresponding outer door panel positioning block to achieve coarse positioning of the outer door panel. Then, the inner door panel is placed inside the flange of the outer door panel. The positioning plate 11 extends into the inner door panel and can position the inner door panel in the X and Z directions. The moving part 5 of the stationary assembly 4 drives the pressing block 6 to move, pressing the inner and outer door panels together and limiting the Y-direction of the inner and outer door panels. This ensures that the inner and outer door panels are in a fully positioned state. During the edge-wrapping 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 edge-wrapping operation. The operator uses an edge-wrapping hammer to perform manual edge-wrapping until all four edges of the outer door panel are fully attached to the inner door panel without any obvious overlap, bulges, or deformation. At this point, the manual edge-wrapping of the door is complete.After the edge-sealing operation is completed, the manually edge-sealed inner and outer door panel assemblies can be removed. The outer door panel for mass production is placed on the molding surface 3, and edge-sealing is performed using a robot rolling method. The outer and inner door panels are positioned by the machine edge-sealing positioning unit, and the positioning pins 12 on the outer door panel are used for positioning. Specifically, the outer door panel positioning pins 12 can position the outer door panel in the X and Z directions. Then, the inner door panel is placed inside the flange of the outer door panel, and the four sides of the inner door panel are adjusted to be fully inserted into the flange of the outer door panel. The moving part 5 of the corresponding support assembly 4 can drive the inner door panel positioning pin 13 to move, allowing the inner door panel positioning pin 13 to be accurately inserted into the positioning hole of the inner door panel. Preferably, the inner door panel positioning pin 13 is used to position the inner door panel in the X and Z directions. Positioning; preferably, the outer door panel positioning pin 12 and the inner door panel positioning pin are inserted into the corresponding outer door panel positioning holes and inner door panel positioning holes from the thickness direction; then, the moving part 5 of the station post assembly 4 drives the pressing block 6 to move, pressing the inner door panel into place, limiting the Y direction of the inner and outer door panels, so that the inner and outer door panels are in a fully positioned state; this can minimize the accumulation of tolerances, improve positioning accuracy, ensure the efficiency and stability of the inner and outer panel edge binding, and reduce the generation of defects. The robot automatically completes the edge binding action of the inner and outer door panels according to the preset program. After the robot returns to its position, the edge binding status of the door is checked manually. After confirming that the edge binding is intact, all the outer door panel positioning pins 12, inner door panel positioning pins 13 and pressing components are opened, and the door assembly is removed manually. At this time, the door robot edge binding is completed.

[0026] In this 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 edge-wrapping positioning unit. The distance between the outer door positioning blocks is adjustable to meet the requirements of manual edge-wrapping, eliminating the need to switch jig bodies. The machine edge-wrapping positioning unit can accurately position the inner and outer door panels in the mass production stage, meeting the requirements of machine edge-wrapping. This invention integrates the manual edge-wrapping jig and the robotic edge-wrapping jig, allowing edge-wrapping operations for car doors in both the trial and mass production stages to be performed on a single jig. It meets the technical requirements of both manual edge-wrapping jigs and robotic edge-wrapping jigs, ensuring the efficiency and stability of inner and outer panel edge-wrapping, shortening the development cycle, reducing development costs, and improving production efficiency.

[0027] In one embodiment, the outer periphery of the outer door panel is supported by the shaped surface 3. The door composite edge-wrapping fixture also includes a suction cup assembly and a limiting block assembly. The suction cup assembly and limiting block assembly are preferably located on the inner side of the shaped surface 3 and correspond to the main body of the outer door panel, providing Y-direction support and limiting for the main body of the outer door panel. The suction cup assembly includes multiple suction cups 14, which can adsorb onto the outer door panel, thereby positioning the outer door panel in the Y direction. Preferably, the multiple suction cups 14 are concentrated on the surface area of ​​the outer door panel, thus enabling stable adsorption. In the window frame area of ​​the outer door panel, the shaped surface 3 can provide sufficient support, thus eliminating the need for suction cups. The suction cups 14 are connected to the mounting plate 1 via suction cup connectors 15. The number of suction cups 14 on each fixture body 2 is preferably six, and the suction cups 14 are swing-type suction cups, allowing adjustment of the angle of the suction cups 14 according to the actual state of the outer door panel, ensuring stable adsorption of the outer door panel. The limiting block assembly includes multiple limiting blocks 16, which cooperate with the suction cup 14 to limit the outer door panel in the suction direction. Specifically, the limiting blocks 16 abut against the outer door panel in the Y direction. Through the abutment of the limiting blocks 16 against the outer door panel and the suction of the suction cup 14, the outer door panel is tightly adhered to the limiting blocks 16, providing support and preventing it from sinking or deforming due to gravity. The limiting blocks 16 can be made of nylon material, increasing the accuracy of the edging operation. In both manual and machine edging operations, the suction cup 14 and the limiting blocks 16 work together to position the outer door panel in the Y direction. This effectively avoids the poor and unstable accuracy issues caused by laser trimming of stamped parts during the trial production stage, ensuring the adjustment of the door edging and the correction of defects in the edging process, thus facilitating the smooth edging of the door.

[0028] In this embodiment, the positioning plate 11 is bolted to the mounting plate 1, and its position on the mounting plate 1 is adjustable. During the edge-sealing operation, the outer door panel and the inner door panel are placed on the conforming surface 3. The positioning plate 11 positions the inner door panel, and 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, the position of the positioning plate 11 is adjusted according to the measured value, and then the door panel is placed back on the conforming surface 3. The edge positioning of the inner door panel is selected from the window opening to avoid structural conflicts and interference. Preferably, there are four positioning plates 11, positioned as follows: Figure 2 As stated above.

[0029] 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 mating surface of the first pad support 17 and the movable part 5, and a pad 18 is also provided on the mating surface between the first pad support 17 and the pressing block 6. The position of the pressing block 6 can be adjusted by changing the number of pads 18, ensuring 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 conformed to the product shape, as shown in the reference. Figure 10 , Figure 11 as well as Figure 12 As shown. The clamping block 6 and the pile driver assembly 4 together form the clamping block pile driver assembly 36.

[0030] In this embodiment, the pile driver assembly 4 includes a drive device 19 and a connecting device 20. The drive device 19 and the connecting device 20 are fixedly connected. The drive device 19 is preferably a drive cylinder. The movable part 5 is connected to the drive end of the drive device 19, and the connecting device 20 is connected to the mounting plate 1. Preferably, the movable part 5 is connected to the drive device 19 via a rotating shaft, and the movable part 5 can rotate relative to the drive device 19. The inner and outer door panels are clamped by the drive device 19 and the clamping block 6. The clamping block 6 directly abuts against the inner door panel. The clamping block 6 clamps the RPS (REFERENZ-PUCKT-SYSTEM) point position of the inner door panel (the RPS point is selected according to the GD&T drawings), thus completing the Y-axis positioning of the inner door panel.

[0031] 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. Furthermore, the X-direction outer panel positioning assembly and the Z-direction outer panel positioning assembly both include stationary positioning blocks 22. The telescopic positioning blocks 21 are connected to the telescopic end of the telescopic device, and the stationary positioning blocks 22 are connected to the movable member 5 via a second pad support 23. Pads 18 are provided on the contact surfaces of the second pad support 23, the movable member 5, and the stationary positioning blocks 22. The position of the stationary positioning blocks 22 can be adjusted by changing the number of pads 18. During manual edging operations, the telescopic positioning blocks 21 can be controlled to retract into the telescopic device to avoid interference between the telescopic positioning blocks 21 and the edging operation. Simultaneously, the drive device 19 can move the stationary positioning blocks 22 via the movable member 5 to avoid interference with the edging 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, symmetrically distributed on both sides of the shaped 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. Furthermore, the top of the telescopic positioning block 21 adopts an R15 rounded transition to ensure that the protruding positioning portion is more than 5mm. The stationary positioning block 22 and the stationary assembly 4 form the positioning block stationary assembly 35.

[0032] In this embodiment, the retractable device includes a positioning block receiving body 24, which has a receiving cavity for accommodating a telescopic positioning block 21. The receiving cavity has a sliding entrance for the telescopic positioning block 21 to slide into. The receiving cavity and the telescopic positioning block 21 are connected by a return spring 25. Preferably, the return spring 25 is disposed within the receiving cavity. During edging operations, the telescopic positioning block 21 can be pressed into the positioning block receiving body 24 to prevent interference between the telescopic positioning block 21 and the edging operation. When the limiting of the telescopic positioning block 21 is released, under the action of the return spring 25, the telescopic positioning block 21 can extend outward to position the outer door panel.

[0033] In this embodiment, a third pad support 26 and a flip-up support 27 are connected between the inner door panel positioning pin 13 and the movable part 5. The flip-up support 27 can be flipped to a certain extent under the action of the movable part 5, thereby adjusting the position of the inner door panel positioning pin 13. The other end of the flip-up support 27 is movably engaged with the connecting device 20. A pad 18 is provided on the third pad support 26. The position of the inner door panel positioning pin 13 is adjusted by changing the number of pads 18. A flip handle 28 is provided on the third pad support 26, allowing the operator to move the flip-up support 27 through the flip handle 28 to adjust the position of the inner door panel positioning pin 13. The inner door panel positioning pin 13 and the anchor assembly 4 form the positioning pin anchor assembly 37.

[0034] In this embodiment, a plurality of outer door panel sensors 29 are provided on the fixture 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 flip-up support 27 to detect the installation position of the inner door panel. After completing the positioning of the outer and inner door panels in three directions, the outer door panel sensor 29 and the inner door panel sensor 30 are used to determine whether the outer and inner door panels are properly assembled. If the outer or inner door panel is not properly assembled, the signal sensor will light up red. At this time, it is necessary to manually determine the cause of the fault in the corresponding sensor and eliminate the fault. When the signal sensor lights up green, the robot automatically completes the rolling edge action of the inner and outer door panels according to the preset program. After the robot returns to its original position, the edge binding status of the door is manually checked. After confirming that the edge binding is intact, all the inner door panel positioning pins 13, outer door panel positioning pins 12 and clamping mechanisms are opened, and the door assembly is manually removed. At this time, the door robot rolling edge is completely completed.

[0035] In this embodiment, a 12mm-15mm wide and 45° angled robot rolling head clearance space is provided around the outer edge of the jig body 2, and the wall thickness of the working part of the jig body 2 where the edge is wrapped is guaranteed to be more than 25mm.

[0036] In one embodiment, the hemming fixture further includes a support base 31, on which a left door panel fixture support 32 and a right door panel fixture support 33 are mounted. Both the left and right door panel fixture supports 32 and 33 are equipped with an 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, and the motor 34 is connected to the left and right door panel fixture supports 32 and 33 respectively via a gear transmission structure. The motor 34 allows for angle adjustment of the left and right door panel fixture supports 32 and 33. The left and right door panel fixture supports 32 and 33 are directly connected to the mounting plate 1, enabling simultaneous hemming of both left and right doors. The mounting plate 1 is connected to the Y-axis clamping mechanism, the manual hemming positioning unit, and the machine hemming positioning unit using bolts or pins to ensure a stable connection.

[0037] In one embodiment, the outer door panel positioning pin 12 and the inner door panel positioning pin 13 are inserted into the sheet metal (corresponding door panel) by more than 5mm. The outer door panel sensor 29 and the inner door panel sensor 30 are within 5mm of the sheet metal. The jig body 2 is provided with multiple sets of connecting beams 38, which are arranged in a frame structure and are arranged alternately in the horizontal and vertical directions. Lifting lugs 39 are provided at the intersection of the connecting beams 38 for lifting operations. The limiting block 16 and the outer door panel positioning pin 12 can both be set on the connecting beams 38. At the same time, the outer door panel positioning pin 12 can also be connected to the mounting plate 1 through the positioning pin connector 40. The angle of the outer door panel positioning pin 12 on the positioning pin connector 40 is adjustable. The positioning pin connector 40 is connected to the outer door panel positioning pin 12 through the pad 18. The position of the outer door panel positioning pin 12 can be adjusted by adjusting the number of pads 18.

[0038] Example 2 includes the door composite edge-wrapping fixture from Example 1. This example provides an edge-wrapping method using the door composite edge-wrapping fixture from Example 1. S1. Place the outer door panel on the shaped surface 3, preferably with the shaped surface 3 completely attached to the outer door panel; 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 using 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 using 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 outer door 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 positioning block staking assembly 35 with the staking type positioning block 22. S3. Place the inner door panel into the flange of the outer door panel, preferably by manual placement; judge whether the placement of the inner door panel is correct based on whether there is obvious interference when the inner door panel is placed into the flange of the outer door panel. S4. Adjust the distance between the positioning plates 11 to position the inner door panel in the X and Z directions. Since the condition of the inner door panel parts is unstable during the trial production stage, the positioning accuracy of the inner door panel can be calibrated by adjusting the positioning plates 11. S5, the movable part 5 of the pile assembly 4 drives the clamping block 6 to abut against the inner door panel in the Y direction, pressing the inner door panel and the outer door panel together; so that the inner and outer door panels have achieved a fully positioned state. S6. The staff uses an edge-wrapping hammer to perform manual edge-wrapping work until all four edges are fully adhered to the inner panel, and there are no obvious overlapping, bulging, deformation or other phenomena, forming the door assembly; S7. Open the Y-axis clamping mechanism, and at the same time adjust the manual edge-wrapping positioning unit and the machine edge-wrapping positioning unit to remove the door assembly after the manual edge-wrapping operation is completed. S8. Place the outer door panel on the molded surface 3, which can be done manually. S9. Position the outer door panel using the positioning pin 12 and the positioning hole on the outer door panel; position the outer door panel in the X and Z directions; limit the outer door panel in the Y direction by the cooperation of the limiting block 16 and the suction cup 14. S10. Place the inner door panel into the flange of the outer door panel, and adjust the four sides of the inner door panel to be fully inserted into the flange of the outer door panel. 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; the inner door panel is positioned in the X and Z directions by the inner door panel positioning pin 13. S12, the movable part 5 of the pile assembly 4 drives the clamping block 6 to abut against the inner door panel in the Y direction, pressing the inner door panel and the outer door panel together, and controlling the Y direction of the inner and outer door panels; S13. Use the outer door panel sensor 29 and the inner door panel sensor 30 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 the operator will manually determine the cause of the fault at the corresponding sensor and eliminate the fault. S14. When the signal sensor turns green, the robot automatically completes the rolling edge action of the inner and outer door panels according to the preset program. S15. After confirming that the edging 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.

[0039] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A composite edge-wrapping fixture for car doors, characterized in that, include: Mounting plate (1); The Y-axis clamping mechanism includes a jig body (2) and a clamping block (6). The jig body (2) includes a mounting surface and a shaped surface (3) for supporting the outer door panel. The mounting surface is opposite to the shaped surface (3) and is mounted on the surface of the mounting plate (1). The line connecting the clamping block (6) and the shaped surface (3) is along the thickness direction of the outer door panel placed on the shaped surface (3). The pile driver assembly (4) includes a movable component (5) that moves along the thickness direction of the outer door panel placed on the shaped surface (3), and the pile driver assembly (4) is connected to the mounting plate (1); the clamping block (6) is connected to the movable component (5); The manual edge-sealing 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 first outer door panel positioning block (7) and a second outer door panel positioning block (8) with adjustable distance. The first outer door panel positioning block (7) and the second outer door panel positioning block (8) are respectively disposed 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 (9) and a fourth outer door panel positioning block (10) with adjustable distance. The third outer door panel positioning block (9) and the fourth outer door panel positioning block (10) are respectively disposed 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 backing plates (11) distributed along the width and length directions of the inner door panel. The positioning backing plate (11) includes an inner door panel abutment end for abutting against the inner door panel. The machine edge-sealing positioning unit includes 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 shaped surface (3); the inner door panel positioning pin (13) is connected to the movable part (5).

2. The composite edge-wrapping fixture for car doors according to claim 1, characterized in that, It also includes a suction cup assembly and a limiting block assembly. The suction cup assembly includes a plurality of suction cups (14) for adsorbing the outer door panel. The suction cups (14) are connected to the mounting plate (1) through suction cup connectors (15). The limiting block assembly includes a plurality of limiting blocks (16) for abutting the outer door panel in the adsorption direction of the suction cups (14). The limiting blocks (16) are connected to the fixture body (2).

3. The composite edge-wrapping fixture for car doors according to claim 1, characterized in that, A first pad support (17) is provided between the pressing block (6) and the movable part (5), and a pad (18) is provided on the contact surface of the first pad support (17) with the movable part (5) and the pressing block (6).

4. The composite edge-wrapping fixture for car doors according to claim 3, characterized in that, The pile assembly (4) includes a fixedly connected drive device (19) and a connecting device (20). The movable part (5) is connected to the output end of the drive device (19). The connecting device (20) is fixedly connected to the mounting plate (1). The output end of the drive device (19) is connected to the movable part (5).

5. The composite edge-wrapping fixture for car 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 stationary positioning block (22), and the telescopic positioning block (21) is connected to the telescopic end of the telescopic device; the stationary positioning block (22) is connected to the movable part (5) through the second pad support (23), and the second pad support (23) and the movable part (5) and the stationary positioning block (22) are all provided with pads (18).

6. The composite edge-wrapping fixture for car doors according to claim 5, characterized in that, The telescopic device includes a positioning block accommodating body (24), which has a accommodating cavity for accommodating the telescopic positioning block (21). The accommodating cavity has a sliding entrance for the telescopic positioning block (21) to slide into. The accommodating cavity and the telescopic positioning block (21) are connected by a return spring (25).

7. The composite edge-wrapping fixture for car doors according to claim 6, characterized in that, A third pad support (26) and a flip-up support (27) are connected between the inner door panel positioning pin (13) and the movable part (5); the third pad support (26) is provided with a pad (18) for adjusting the position of the inner door panel positioning pin (13), and the third pad support (26) is provided with a flip handle (28) for driving the flip-up support (27) to move.

8. The composite edge-wrapping fixture for car doors according to claim 7, characterized in that, The fixture 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 flip-up support (27) is provided with an inner door panel sensor (30) for detecting the installation position of the inner door panel.

9. The composite edge-wrapping fixture for car doors according to claim 1, characterized in that, It also includes a support base (31), on which a left door panel fixture support (32) and a right door panel fixture support (33) are provided; the mounting plate (1), the Y-axis clamping mechanism, the manual edge-wrapping positioning unit, and the machine edge-wrapping positioning unit are installed on the left door panel fixture support (32) and the right door panel fixture support (33).

10. A method for edge binding using the edge binding fixture as described in any one of claims 1-9, characterized in that: S1. Place the outer door panel on the shaped surface (3); 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 using 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 using the third outer door panel positioning block (9) and the fourth outer door panel positioning block (10); S3. Place the inner door panel into the flange of the outer door panel; S4. Adjust the distance between the positioning plates (11) to position the inner door panel in the X and Z directions using the positioning plates (11); S5. The movable part (5) of the 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 together. S6. Use an edge-sealing hammer to perform manual edge-sealing operations to form the door assembly; S7. Open the Y-axis clamping mechanism and remove the door assembly that has been manually edged; S8. Place the outer door panel on the shaped surface (3); S9. Position the positioning hole on the outer door panel using the outer door panel positioning pin (12); Position the outer door panel in the X and Z directions. S10. Place the inner door panel into the flange of the outer door panel, and adjust the four sides of the inner door panel to be fully inserted into the flange of the outer door panel. 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; the inner door panel is positioned in the X and Z directions by the inner door panel positioning pin (13); S12, the movable part (5) of the 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 together; S13. The robot completes the hemming action of the inner and outer panels of the car door.

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