Lightweight vehicle door panel welding device and welding method

Abstract

The present application relates to the technical fields of automobile door panel welding, and specifically relates to a lightweight automobile door panel welding device and welding method, which is used for simultaneously welding a window frame, sheet metal parts, hinged parts and a crash beam, and comprises multiple welding robots, multiple clamping jaws for positioning the crash beam, and multiple welding fixtures, the sheet metal parts and the hinged parts are provided with guide holes, a connecting rod is fixedly installed between the multiple clamping jaws, guide rods matched with the guide holes are fixedly installed on the connecting rod, the guide rods, the connecting rod and the multiple clamping jaws form a positioning part, the positioning part is attached to the side wall of the sheet metal parts, a mounting rack is fixedly installed on one side of the multiple welding fixtures, a connecting module fixedly connected with the positioning part is fixedly installed on the side of the mounting rack away from the welding fixtures, first limiting parts for suspending and limiting the window frame are fixedly installed on the mounting rack, and the connecting part of the window frame, the sheet metal parts and the hinged parts is in a suspended and exposed state in the mounting rack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile door panel welding, and particularly relates to a lightweight automobile door panel welding device and a welding method. BACKGROUND

[0002] The manufacturing process of the automobile door is first that the worker sends the carbonized steel plate in the roll into the cutting machine to obtain the steel plate with a proper length, and then the steel plate is punched into the outer door panel, the sheet metal part and the hinge part in the pressing machine, and whether there is a flaw is checked. Then the window frame, the sheet metal part and the hinge part of the door are clamped and fixed on the welding fixture, and then the three parts are welded together by the welding mechanical arm to obtain the inner door panel. Then the worker arranges the anti-collision beam on the machine platform, and then places the previously welded inner door panel together, clamps and fixes it, and then welds it by the welding mechanical arm. Finally, the inner door panel and the outer door panel are pressed by the pressing machine, the edge of the outer door panel is folded to the inner door panel, and the preliminary lightweight automobile door is obtained.

[0003] When welding the window frame, the sheet metal part and the hinge part, the three are placed horizontally, and then clamped by the welding fixture. Although the welding side can ensure that the welded inner door panel is integrated, the anti-collision beam still needs to be welded to the inner door panel in the next process, and the two adjacent welding processes cannot be integrated into one process to shorten the processing time.

[0004] The above information disclosed in the background section is only used to strengthen the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] The purpose of the present application is to design a welding device and a welding method which can weld the window frame, the sheet metal part and the hinge part, and simultaneously weld the anti-collision beam to the sheet metal part and the hinge part, so as to solve the above problems in the art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a lightweight automobile door panel welding device for simultaneously welding a window frame, a sheet metal part, a hinge part and an anti-collision beam, comprising a plurality of welding mechanical arms, a plurality of clamping jaws for positioning the anti-collision beam, and a plurality of welding fixtures. The sheet metal part and the hinge part have guide holes, a connecting rod is fixedly installed between the plurality of clamping jaws, a guide rod cooperating with the guide holes is fixedly installed on the connecting rod, the guide rod, the connecting rod and the plurality of clamping jaws form a positioning member, the positioning member is attached to the side wall of the sheet metal part, a mounting rack is fixedly installed on one side of the plurality of welding fixtures, a connecting module fixedly connected with the positioning member is fixedly installed on the side of the mounting rack away from the welding fixture, a first limiting member limiting the suspension of the window frame is fixedly installed on the mounting rack, and the connection part of the window frame, the sheet metal part and the hinge part is in a suspended and exposed state in the mounting rack.

[0007] By cooperation between the positioning member and the welding fixture, the window frame, the sheet metal part, the hinged part and the anti-collision beam are simultaneously clamped and fixed vertically, so that multiple welding robots simultaneously weld the anti-collision beam on the sheet metal part and the hinged part when welding the window frame, the sheet metal part and the hinged part.

[0008] Preferably, the anti-collision beam is fixedly provided with two or more positioning pieces, and the positioning pieces are not in contact with the connection part of the sheet metal part and the hinged part.

[0009] Preferably, when the clamping jaw is connected with the anti-collision beam, the positioning pieces are located on both sides of the clamping jaw.

[0010] Preferably, the mounting frame is fixedly provided with a second limiting member and a third limiting member for limiting the sheet metal part and the hinged part, and the second limiting member and the third limiting member are spaced apart from the connection part of the sheet metal part and the hinged part.

[0011] Preferably, the first limiting member comprises a suspension part abutting the inner wall of the window frame and a connecting part abutting the side wall of the window frame, and the connecting part and the suspension part are fixedly connected.

[0012] Preferably, the second limiting member comprises a first supporting part in contact with the bottom surface of the sheet metal part and a first limiting part in contact with the side surface of the sheet metal part, and the first supporting part and the first limiting part are fixedly connected with the mounting frame.

[0013] Preferably, the third limiting member comprises a second supporting part in contact with the bottom surface of the hinged part and a second limiting part in contact with the side surface of the hinged part, and the second supporting part and the second limiting part are fixedly connected with the mounting frame.

[0014] Preferably, the positioning pieces on at least one anti-collision beam are respectively mounted on the hinged part and the sheet metal part.

[0015] Preferably, the clamping jaw comprises a clamping block fixedly connected with the connecting rod and a clamping groove formed in the clamping block, the clamping groove is horizontally arranged and is in interference fit with the anti-collision beam, and when the anti-collision beam is located in the clamping groove, the side wall of the anti-collision beam protrudes out of the clamping groove.

[0016] In a second aspect, the present application further provides a welding method for operating the light-weight door plate welding device of any one of claims 1-9, comprising the following steps:

[0017] S1. sequentially placing the anti-collision beam into different clamping grooves, ensuring that the positioning pieces are not in contact with the clamping jaw and that the positioning pieces are not completely located on the same side of the clamping jaw;

[0018] S2. placing the window frame on the first limiting member to suspend the window frame;

[0019] S3. Align the guide holes on the hinge with the guide rods, and push the hinge to connect with the second support part;

[0020] S4. Align the guide holes on the sheet metal part with the guide rods, and push the sheet metal part to connect with the first support part;

[0021] S5. Start the welding clamp, clamp the sheet metal part, the window frame and the hinge, and paste the positioning sheet on the anti-collision beam to the side walls of the sheet metal part and the hinge.

[0022] In the above technical solution, the technical effects and advantages provided by the present application are:

[0023] 1. When the welding clamp is used to clamp the sheet metal part, the window frame and the hinge, the anti-collision beam on the other side is also clamped, the welding robot on one side of the mounting frame welds the connection between the sheet metal part, the window frame and the hinge, and the welding robot on the other side simultaneously welds the positioning sheet to the side walls of the sheet metal part and the hinge, thus completing two welding processes within the time length of one process, and shortening the overall door production time length;

[0024] 2. The mounting frame is designed to vertically suspend and fix the window frame, the sheet metal part and the hinge, and expose the originally welded side of the connection between the three, facilitating welding by the welding robot;

[0025] 3. Meanwhile, the clamping jaw is improved, so that when the anti-collision beam is installed on the clamping jaw, a section protrudes, so that when the welding clamp is clamped, the positioning sheet added to the anti-collision beam is pressed against the sheet metal part and the hinge, facilitating the welding robot to directly weld the positioning sheet to the sheet metal part and the hinge;

[0026] 4. The positioning sheet is welded to the anti-collision beam in advance, and then the positioning sheet is welded to the anti-collision beam, which not only reduces the time length of welding the anti-collision beam to the sheet metal part and the hinge, but also ensures that the anti-collision beam plays a role in resisting bending when the door is hit. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0028] Figure 1 is a schematic diagram of the overall structure of the present application;

[0029] Figure 2 is a schematic diagram of the clamping front of the welding clamp of the present application;

[0030] Figure 3Schematic diagram of clamping back of welding fixture of the present application;

[0031] Figure 4 Schematic diagram of disassembly of sheet metal part and hinged part of the present application;

[0032] Figure 5 Schematic diagram of disassembly of anti-collision beam and clamping jaw of the present application;

[0033] Figure 6 Schematic diagram of connection of connecting rod and mounting rack of the present application.

[0034] Explanation of reference signs:

[0035] 1, window frame; 2, sheet metal part; 3, hinged part; 4, anti-collision beam; 5, welding robot; 6, clamping jaw; 6a, clamping block; 6b, clamping groove; 7, welding fixture; 8, guide hole; 9, positioning part; 9a, connecting rod; 9b, guide rod; 10, mounting rack; 11, connecting module; 12, first limiting part; 12a, suspension part; 12b, connecting part; 13, positioning sheet; 14, second limiting part; 14a, first supporting part; 14b, first limiting part; 15, third limiting part; 15a, second supporting part; 15b, second limiting part. DETAILED DESCRIPTION

[0036] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0038] The present application provides a welding fixture as Figures 1-6The illustrated lightweight vehicle door panel welding device is used for welding window frame 1, sheet metal part 2, hinge part 3 and anti-collision beam 4 simultaneously, comprising a hollow mounting frame 10 arranged vertically, a plurality of welding clamps 7 are fixedly installed on one side of the mounting frame 10, a first limiting piece 12 composed of a suspension part 12a and a connecting part 12b is fixedly installed at the top of the inner cavity of the mounting frame 10, the suspension part 12a and the connecting part 12b are integrally made, the shape of the suspension part 12a cooperates with the surface of the window frame 1 to contact and support the window frame 1, and the shape of the connecting part 12b on the side in contact with the window frame 1 also cooperates with the surface of the window frame 1, when the welding clamp 7 exerts a vertical pressure on the connecting part 12b, the window frame 1 can be clamped on the connecting part 12b; two or more positioning pieces 13 are welded and fixed on the anti-collision beam 4 in advance according to the length of the anti-collision beam 4, at least one positioning piece 13 is ensured on the inner wall of each of the sheet metal part 2 and the hinge part 3, and the two positioning pieces 13 are welded on the same anti-collision beam 4, a connecting module 11 is installed on the mounting frame 10, a positioning piece 9 composed of a connecting rod 9a, a guide rod 9b and a plurality of clamping jaws 6 is fixedly installed on the connecting module 11, the clamping jaw 6 is composed of a clamping block 6a and a horizontal clamping groove 6b on the clamping block 6a, the anti-collision beam 4 is inserted into the clamping groove 6b in interference fit, the side of the protruding part of the anti-collision beam 4 from the clamping groove 6b, the guide rod 9b is used for inserting into the guide hole 8 on the sheet metal part 2 and the hinge part 3 for guidance, after the clamping jaw 6 clamps and fixes the anti-collision beam 4, the positioning piece 13 is located on one side or both sides of the clamping jaw 6, and cannot be covered by the clamping jaw 6, so as not to affect the welding of the positioning piece 13 to the sheet metal part 2 or the hinge part 3, the welding clamp 7 exerts a force on the sheet metal part 2 and the hinge part 3 towards the positioning piece 9, so that the sheet metal part 2 and the hinge part 3 are clamped after contacting the positioning piece 9 and the positioning piece 13; in order to further improve the clamping effect of the sheet metal part 2 and the hinge part 3, a second limiting piece 14 composed of a first supporting part 14a and a first limiting part 14b is fixedly installed in the mounting frame 10, the first supporting part 14a provides a supporting force for the bottom of the sheet metal part 2 to alleviate the damage of the guide rod 9b, and the first limiting part 14b provides additional clamping force for the welding clamp 7 when clamping the sheet metal part 2, and the second limiting piece 15 fixedly composed of a second supporting part 15a and a second limiting part 15b is installed in the mounting frame 10, the second supporting part 15a provides support for the hinge part 3, and the second limiting part 15b cooperates with the welding clamp 7 to provide additional clamping force for the hinge part 3.At this time, the sheet metal part 2, the window frame 1 and the hinge part 3 are in a positioning state, the connection parts of the three are in a suspended exposed state in the mounting frame 10, at this time, the welding robot 5 starts to work on both sides of the mounting frame 10, one side welds the connection part of the sheet metal part 2, the window frame 1 and the hinge part 3, and the other side welds the positioning sheet 13 on the side wall of the sheet metal part 2 and the hinge part 3, at the same time, the welding process of the sheet metal part 2, the window frame 1 and the hinge part 3, and the process of welding the anti-collision beam 4 on the side wall of the sheet metal part 2 and the hinge part 3 are completed, and the pressing process of the next inner door panel and outer door panel can be directly carried out, the time length of the two processes is combined to the maximum time length of one process, and the overall process time length is reduced;

[0039] The specific operation is that the worker first puts the anti-collision beam 4 into the clamping groove 6b, so that the positioning sheet 13 faces one side of the welding fixture 7, then puts the window frame 1 on the first limiting part 12, puts the sheet metal part 2 on the second limiting part 14 according to the cooperation of the guide hole 8 and the guide rod 9b, and then puts the hinge part 3 on the third limiting part 15 according to the cooperation of the guide hole 8 and the guide rod 9b, and then starts the welding fixture 7, which clamps the window frame 1 on the first limiting part 12, and presses the sheet metal part 2 and the hinge part 3 towards the positioning sheet 13, the positioning sheet 13 generates pressure on the anti-collision beam 4, the anti-collision beam 4 transmits the pressure to the clamping jaw 6, the clamping jaw 6 transmits the pressure to the connecting module 11 through the connecting rod 9a, and the sheet metal part 2 and the hinge part 3 are clamped because the connecting module 11 is fixedly connected with the mounting frame 10. At this time, the welding robots 5 on both sides of the mounting frame 10 start to weld one side of the sheet metal part 2, the window frame 1 and the hinge part 3, and weld the positioning sheet 13 to the sheet metal part 2 and the hinge part 3 on the other side, and two processes are completed in the time length of one process;

[0040] In the second aspect, the present application also provides a welding method for operating the light-weight door panel welding device to weld the door panel, which comprises the following steps:

[0041] S1. Put the anti-collision beam 4 into different clamping grooves 6b in sequence, ensure that the positioning sheet 13 does not contact the clamping jaw 6, and ensure that the positioning sheet 13 is not completely located on the same side of the clamping jaw 6;

[0042] S2. Place the window frame 1 on the first limiting part 12 to suspend the window frame 1;

[0043] S3. Align the guide hole 8 on the hinge part 3 with the guide rod 9b, and push the hinge part 3 to be connected with the second supporting part 15a;

[0044] S4. Align the guide hole 8 on the sheet metal part 2 with the guide rod 9b, and push the sheet metal part 2 to be connected on the first supporting part 14a;

[0045] S5. Start welding fixture, clamp sheet metal part 2, hinge part 3 and window frame 1, and paste the positioning sheet 13 on the anti-collision beam 4 with the side wall of the sheet metal part 2 and the hinge part 3.

[0046] It is important to note that the construction and arrangement of the application shown in the several exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application.

Claims

1. A lightweight door panel welding device for simultaneously welding a window frame (1), sheet metal parts (2), hinge parts (3), and a crash beam (4), comprising multiple welding robots, multiple grippers (6) for positioning the crash beam (4), and multiple welding fixtures (7), wherein the sheet metal parts (2) and the hinge parts (3) have guide holes (8), characterized in that: A connecting rod (9a) is fixedly installed between multiple grippers (6). A guide rod (9b) that mates with a guide hole (8) is fixedly installed on the connecting rod (9a). The guide rod (9b), the connecting rod (9a), and the multiple grippers (6) constitute a positioning element (9). The gripper (6) includes a clamping block (6a) fixedly connected to the connecting rod (9a) and a clamping groove (6b) opened on the clamping block (6a). The side walls of the sheet metal part (2) and the hinge part (3) are both in contact with the positioning element (9). A mounting bracket (1) is fixedly installed on one side of multiple welding fixtures (7). 0), the mounting bracket (10) is fixedly installed with a connecting module (11) fixedly connected to the positioning component (9) on the side away from the welding fixture (7), the mounting bracket (10) is fixedly installed with a first limiting component (12) for suspending and limiting the window frame (1), the connection of the window frame (1), sheet metal part (2) and hinge part (3) is suspended and exposed in the mounting bracket (10), and more than two positioning pieces (13) are fixedly installed on the anti-collision beam (4), the positioning pieces (13) do not contact the connection of the sheet metal part (2) and the hinge part (3); By cooperating with the positioning part (9) and the welding fixture (7), the window frame (1), sheet metal part (2), hinge part (3) and anti-collision beam (4) are simultaneously clamped and fixed vertically, so that when multiple welding robots are welding the window frame (1), sheet metal part (2) and hinge part (3), the anti-collision beam (4) is simultaneously welded onto the sheet metal part (2) and hinge part (3).

2. The lightweight door panel welding device according to claim 1, characterized in that: When the gripper (6) is connected to the anti-collision beam (4), the positioning piece (13) is located on both sides of the gripper (6).

3. The lightweight door panel welding device according to claim 1, characterized in that: The mounting bracket (10) is fixedly mounted with a second limiting member (14) and a third limiting member (15) that limit the sheet metal part (2) and the hinge (3). There is a gap between the second limiting member (14) and the third limiting member (15) and the connection between the sheet metal part (2) and the hinge (3).

4. The lightweight door panel welding device according to claim 1, characterized in that: The first limiting member (12) includes a suspension part (12a) that fits against the inner wall of the window frame (1) and a connecting part (12b) that fits against the side wall of the window frame (1). The connecting part (12b) and the suspension part (12a) are fixedly connected.

5. The lightweight door panel welding device according to claim 3, characterized in that: The second limiting member (14) includes a first support part (14a) that contacts the bottom surface of the sheet metal part (2) and a first limiting part (14b) that contacts and cooperates with the side surface of the sheet metal part (2). Both the first limiting part (14b) and the first support part (14a) are fixedly connected to the mounting bracket (10).

6. The lightweight door panel welding device according to claim 3, characterized in that: The third limiting member (15) includes a second support part (15a) that contacts the bottom surface of the hinge (3) and a second limiting part (15b) that contacts and cooperates with the side surface of the hinge (3). The second support part (15a) and the second limiting part (15b) are both fixedly connected to the mounting bracket (10).

7. The lightweight door panel welding device according to claim 1, characterized in that: At least one positioning piece (13) on the anti-collision beam (4) is respectively installed on the hinge (3) and the sheet metal part (2).

8. The lightweight door panel welding device according to claim 1, characterized in that: The clamping groove (6b) is horizontally positioned and is interference-fitted with the anti-collision beam (4). When the anti-collision beam (4) is located in the clamping groove (6b), the side wall of the anti-collision beam (4) protrudes from the clamping groove (6b) by a section.

9. A welding method for operating the lightweight vehicle door panel welding apparatus according to any one of claims 1-8, characterized in that: Includes the following steps: S1. Place the anti-collision beam (4) into different clamping slots (6b) in sequence to ensure that the positioning piece (13) does not contact the clamp (6) and that the positioning piece (13) is not completely located on the same side of the clamp (6); S2. Place the window frame (1) onto the first limiting member (12) to suspend the window frame (1); S3. Align the guide hole (8) on the hinge (3) with the guide rod (9b) and push the hinge (3) to connect with the second support (15a); S4. Align the guide hole (8) on the sheet metal part (2) with the guide rod (9b) and push the sheet metal part (2) onto the first support part (14a) for connection; S5. Start the welding fixture to clamp the sheet metal part (2), the hinge part (3) and the window frame (1), and attach the positioning piece (13) on the anti-collision beam (4) to the side wall of the sheet metal part (2) and the hinge part (3).

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