Precise welding equipment for automobile body gap

Abstract

The utility model discloses precise welding equipment for vehicle body gaps. The precise welding equipment comprises a working frame body, a movable plate movably installed on the working frame body and laser welding equipment connected to the movable plate. A placing table is movably connected to the working frame body, two connecting rods are connected to the placing table, and a positioning assembly is installed on the placing table. According to the precise welding equipment for the vehicle body gap, a first movable block ascends and descends, a fixing rod extrudes a frame, and a first rotating rod is stably overturned by 180 degrees under the action of a tension spring, so that a vehicle body workpiece on a placement table is overturned by 180 degrees, then welding of the front face and the back face of the vehicle body workpiece by follow-up laser welding equipment is facilitated, errors generated when a vehicle body is overturned are reduced, and the welding efficiency is improved. And meanwhile, the workload of workers is reduced, the workers can rapidly and stably place the vehicle body workpieces of different thickness types on the placing table by arranging the positioning assembly, and the welding effect of the laser welding equipment is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding, in particular to a vehicle body gap precision welding device. Background Art

[0002] At present, the main methods of automobile body welding include resistance spot welding, laser welding, MIG and MAG welding. Among them, laser welding technology is mainly used for welding of plates of unequal thickness and welding of the body. Laser welding is used in automobiles to reduce the weight of the body and thus achieve fuel saving. It improves the assembly accuracy of the body and increases the body stiffness by 30%, thereby improving the safety of the body. It reduces the stamping and assembly costs in the automobile body manufacturing process, reduces the number of body parts, and improves the degree of body integration.

[0003] At present, the workpiece to be welded on the car body is generally placed on the workbench, and the laser welding head is driven to perform welding. After the front side is welded, the workpiece needs to be manually flipped over, and then the back side is welded. The welding position on the back side of the workpiece will be offset due to manual flipping of the workpiece, which will lead to welding errors, increasing the workload of the workers and affecting the welding effect of the workpiece. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle body gap precision welding device to solve the problem raised in the above background technology that currently, the workpiece to be welded on the vehicle body is generally placed on a workbench, and then a laser welding head is driven for welding. After the front side is welded, the workpiece needs to be manually turned over, and then the back side is welded. The welding position on the back side of the workpiece will be offset to a certain extent when the workpiece is manually turned over, which will lead to welding errors, increasing the workload of the workers and affecting the welding effect of the workpiece.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a car body gap precision welding device, comprising a working frame, a movable plate movably mounted on the working frame, and a laser welding device connected to the movable plate; a placing table movably connected to the working frame, two connecting rods connected to the placing table, and a positioning assembly installed on the placing table;

[0006] A movable block 1 is movably connected to the working frame, a rotating rod 1 is rotatably connected to the movable block 1, an end of the rotating rod 1 is connected to the placing table, and a driving mechanism for driving the rotating rod 1 to move is installed on the working frame.

[0007] Preferably, the driving mechanism comprises a connecting plate, a bottom rod, a tension spring, a connecting disc, a fixing rod, a limiting member and a driving member;

[0008] The connecting plate is connected to one end of a rotating rod away from the placing table, the movable block is connected to a bottom rod, a tension spring is movably connected to the connecting plate, the other end of the tension spring is movably connected to the bottom rod, a connecting disk is sleeved on the rotating rod, and two fixing rods are connected to the connecting disk.

[0009] Preferably, the limiting member includes a frame and a triangular plate;

[0010] A frame is slidably connected to the working frame, a triangular plate is connected to the frame, and the triangular plate is attached to the outside of a rotating rod.

[0011] Preferably, the driving member includes a vertical plate and a cylinder;

[0012] The working frame is connected with a vertical plate, a T-shaped slot is provided inside the vertical plate, the movable block is connected with a T-shaped block sliding inside the T-shaped slot, the working frame is connected with a cylinder, and the output end of the cylinder is connected with the T-shaped block.

[0013] Preferably, the positioning assembly comprises a thread groove, a screw rod, a thread block and a pressing plate;

[0014] The placement table is provided with a plurality of groups of thread grooves, any of the thread grooves is threadedly sleeved with a screw rod, each group of the screws is threadedly sleeved with a thread block, each group of the thread blocks is rotatably connected with a pressure plate, and each group of the screws passes through the interior of the pressure plate.

[0015] Preferably, the working frame is rotatably connected to two reciprocating screws, each group of the reciprocating screws is threaded with a movable block two, each group of the reciprocating screws is sleeved with a conical tooth one, each group of the conical tooth one is meshed with a conical tooth two, each group of the conical teeth two is commonly connected to a rotating rod two, the working frame is connected to a motor one, the output end of the motor one is sleeved with the rotating rod two, and the other end of the rotating rod two is rotatably connected to the working frame.

[0016] Preferably, each group of the movable blocks 2 is connected to a side panel, and each group of the side panels is commonly connected to a side rod, and any of the side panels is connected to a motor 2, and a reverse screw is sleeved on the output end of the motor 2, and the reverse screw is rotatably connected to the other side panel on the side away from the output end of the motor, and the movable plate is threadedly sleeved on the reverse screw, and the other end of the movable plate is slidably connected to the side rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The movable block is lifted and lowered to squeeze the frame with the fixed rod, and the rotating rod is turned 180 degrees stably under the action of the tension spring, so that the body workpiece on the placement table is turned 180 degrees, which is convenient for the subsequent laser welding equipment to weld the front and back sides of the body workpiece, reducing the error caused by the body turning over, and reducing the workload of workers. By setting a positioning component, workers can quickly and stably place body workpieces of different thicknesses on the placement table, further improving the welding effect of the laser welding equipment;

[0019] 2. By providing a reciprocating screw, a movable block 2, a conical tooth 1, a conical tooth 2 and a rotating rod 2, the laser welding equipment can be moved longitudinally under the action of the motor 1, so as to weld body workpieces of different thicknesses. By providing a side rod and a reverse screw, the laser welding equipment can be moved laterally under the action of the motor 2, thereby expanding the welding range of the body workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the placement table, thread groove, screw rod, thread block, pressing plate and connecting rod of the utility model;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the placing table, the movable block 1, the vertical plate, the rotating rod 1 and the frame of the utility model;

[0023] Figure 4 It is a three-dimensional structural diagram of the utility model's rotating rod 1, connecting plate, tension spring, connecting plate, fixing rod, frame and triangular plate;

[0024] Figure 5 It is a partial schematic diagram of the three-dimensional structural section of the working frame of the utility model.

[0025] In the figure: 1. working frame; 101. movable plate; 2. laser welding equipment; 3. placing table; 301. threaded groove; 302. screw; 303. threaded block; 304. pressure plate; 305. connecting rod; 4. movable block 1; 401. vertical plate; 402. rotating rod 1; 403. connecting plate; 404. bottom rod; 405. tension spring; 406. connecting plate; 407. fixing rod; 408. frame; 409. triangular plate; 5. reciprocating screw; 501. movable block 2; 502. conical tooth 1; 503. conical tooth 2; 504. rotating rod 2; 6. side plate; 601. side rod; 602. reverse screw. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The utility model provides a technical solution: a car body gap precision welding device, comprising a working frame 1, a movable plate 101 movably mounted on the working frame 1, and a laser welding device 2 connected to the movable plate 101; a placing table 3 is movably connected to the working frame 1, two connecting rods 305 are connected to the placing table 3, and a positioning component is installed on the placing table 3;

[0028] A movable block 4 is movably connected to the working frame 1, and a rotating rod 402 is rotatably connected to the movable block 4. The end of the rotating rod 402 is connected to the placement table 3. A driving mechanism for driving the rotating rod 402 to move is installed on the working frame 1. The movable block 4 is raised and lowered to make the fixed rod 407 squeeze the frame 408, and the rotating rod 402 is stably flipped 180 degrees under the action of the tension spring 405, so that the car body workpiece on the placement table 3 is flipped, which is convenient for the subsequent laser welding equipment 2 to weld the front and back sides of the car body workpiece.

[0029] The driving mechanism includes a connecting plate 403, a bottom rod 404, a tension spring 405, a connecting plate 406, a fixing rod 407, a limiting member and a driving member;

[0030] The connecting plate 403 is connected to one end of the rotating rod 402 away from the placing table 3, the movable block 4 is connected to the bottom rod 404, the connecting plate 403 is movably connected to the tension spring 405, the connecting plate 403 is connected to the limiting rod 1, one end of the tension spring 405 is sleeved on the limiting rod 1, the other end of the tension spring 405 is movably connected to the bottom rod 404, the bottom rod 404 is connected to the limiting rod 2, the other end of the tension spring 405 is sleeved on the limiting rod 2, the rotating rod 402 is sleeved with a connecting disk 406, and the connecting disk 406 is connected to two fixed rods 407. By providing a driving mechanism, the movable block 4 can drive the placing table 3 to flip 180 degrees, so as to facilitate the laser welding equipment 2 to weld the front and back sides of the car body workpiece.

[0031] The limiting member includes a frame 408 and a triangular plate 409;

[0032] A frame 408 is slidably connected to the working frame 1, a sliding groove is opened on the working frame 1, and a slider sliding on the sliding groove of the working frame 1 is connected to the bottom of the frame 408. A triangular plate 409 is connected to the frame 408, and the triangular plate 409 is attached to the outside of the rotating rod 402. By setting a limiting member, the rotating rod 402 can be flipped.

[0033] The driving member includes a vertical plate 401 and a cylinder;

[0034] The working frame 1 is connected with a vertical plate 401, a T-shaped slot is provided inside the vertical plate 401, a T-shaped block sliding inside the T-shaped slot is connected to the movable block 4, and a cylinder is connected to the working frame 1, and an output end of the cylinder is connected to the T-shaped block.

[0035] The positioning assembly includes a thread groove 301, a screw rod 302, a thread block 303 and a pressing plate 304;

[0036] A plurality of groups of thread grooves 301 are provided on the placement table 3, and a screw 302 is threadedly sleeved on any thread groove 301, and a thread block 303 is threadedly sleeved on each group of screws 302, and a pressure plate 304 is rotatably connected to each group of thread blocks 303, and each group of screws 302 passes through the interior of the pressure plate 304. By providing a positioning component, workers can quickly and stably place car body workpieces of different thicknesses on the placement table 3.

[0037] Two reciprocating screw rods 5 are rotatably connected to the working frame 1, and each group of reciprocating screw rods 5 is threadedly sleeved with a movable block 2 501, and each group of reciprocating screw rods 5 is sleeved with a conical tooth 1 502, and each group of conical tooth 1 502 is meshed with a conical tooth 2 503, and each group of conical tooth 2 503 is commonly connected with a rotating rod 2 504, and a motor 1 is connected to the working frame 1, and the output end of the motor 1 is sleeved with the rotating rod 2 504, and the other end of the rotating rod 2 504 is rotatably connected to the working frame 1. By providing the reciprocating screw rod 5, the movable block 2 501, the conical tooth 1 502, the conical tooth 2 503 and the rotating rod 2 504, the laser welding equipment 2 can be moved longitudinally under the action of the motor 1, and thus can weld car body workpieces of different thicknesses.

[0038] Each group of movable blocks 2 501 is connected to a side plate 6, and each group of side plates 6 is commonly connected to a side rod 601. Motor 2 is connected to any side plate 6, and a reverse screw rod 602 is sleeved on the output end of motor 2. The reverse screw rod 602 is rotatably connected to the other side plate 6 away from the output end of the motor. The movable plate 101 is threadedly sleeved on the reverse screw rod 602, and the other end of the movable plate 101 is slidably connected to the side rod 601. By providing the side rod 601 and the reverse screw rod 602, the laser welding equipment 2 can be moved laterally under the action of motor 2, thereby expanding the welding range of the body workpiece.

[0039] Working principle: First, a worker places the body workpiece on the surface of the placement table 3, then rotates the screw 302 to the thread groove 301, and then rotates the thread block 303 on the screw 302 until the pressing plate 304 fits on the body workpiece, so that the pressing plate 304 can position the body workpiece;

[0040] By driving the motor 1, the rotating rod 2 504 drives the conical gear 2 503 to rotate, and the conical gear 1 502 meshes with the outside of the conical gear 2 503, so that the conical gear 1 502 rotates synchronously with the conical gear 2 503, so that the reciprocating screw 5 rotates synchronously, so that the movable block 2 501 drives the side plate 6 to rise and fall, until the port of the laser welding device 2 is vertically above the body workpiece, the laser welding device 2 can be started to weld the body workpiece, and then the motor 2 is driven to rotate the reverse screw 602, so that the movable plate 101 moves on the reverse screw 602, and also slides on the side rod 601, so that the laser welding device 2 can move horizontally, thereby expanding the welding range of the body workpiece;

[0041] When the front welding of the car body workpiece is completed, the motor 1 can be driven to move the laser welding device 2 upward, and then the cylinder can be driven to make the T-shaped block slide in the T-shaped groove inside the vertical plate 401 while driving the movable block 4 to move, so that the bottom rod 404 slides on the working frame 1, and the connecting plate 406 and the fixed rod 407 move upward synchronously until the fixed rod 407 squeezes the upper end of the inner wall of the frame 408, so that the rotating rod 402 connected to the connecting plate 406 rotates, and the connecting plate 403 rotates the rotating rod 402 synchronously. Rotate 180 degrees, so that the tension spring 405 produces elastic deformation and then resets. The rotating rod 402 and the connecting plate 403 rotate 180 degrees and also drive the placement table 3 to flip 180 degrees. Then the cylinder drives the T-block to move down, so that the rotating rod 402 and the fixed rod 407 squeeze the triangular plate 409, so that the frame 408 drives the slider to move in the slide groove on the working frame 1, until the T-block returns to its original position, and then the laser welding equipment 2 can be driven to weld the other side of the car body workpiece.

[0042] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle body gap precision welding device, characterized in that: The invention comprises a working frame (1), a movable plate (101) movably mounted on the working frame (1), and a laser welding device (2) connected to the movable plate (101); the working frame (1) is movably connected to a placement table (3), the placement table (3) is connected to two connecting rods (305), and a positioning component is installed on the placement table (3); The working frame (1) is movably connected to a movable block (4), the movable block (4) is rotatably connected to a rotating rod (402), the end of the rotating rod (402) is connected to the placement table (3), and the working frame (1) is equipped with a driving mechanism for driving the rotating rod (402) to move.

2. The vehicle body gap precision welding equipment according to claim 1, characterized in that: The driving mechanism comprises a connecting plate (403), a bottom rod (404), a tension spring (405), a connecting plate (406), a fixing rod (407), a limiting member and a driving member; The connecting plate (403) is connected to one end of the rotating rod (402) away from the placing table (3); the movable block (4) is connected to a bottom rod (404); a tension spring (405) is movably connected to the connecting plate (403); the other end of the tension spring (405) is movably connected to the bottom rod (404); a connecting disk (406) is sleeved on the rotating rod (402); and two fixing rods (407) are connected to the connecting disk (406).

3. The vehicle body gap precision welding equipment according to claim 2, characterized in that: The limiting member comprises a frame (408) and a triangular plate (409); The working frame (1) is slidably connected to a frame (408), the frame (408) is connected to a triangular plate (409), and the triangular plate (409) is fitted on the outside of the rotating rod (402).

4. The vehicle body gap precision welding equipment according to claim 2, characterized in that: The driving member comprises a vertical plate (401) and a cylinder; The working frame (1) is connected to a vertical plate (401), a T-shaped slot is provided inside the vertical plate (401), the movable block (4) is connected to a T-shaped block that slides inside the T-shaped slot, the working frame (1) is connected to a cylinder, and the output end of the cylinder is connected to the T-shaped block.

5. The vehicle body gap precision welding equipment according to claim 1, characterized in that: The positioning assembly comprises a thread groove (301), a screw rod (302), a thread block (303) and a pressing plate (304); The placement table (3) is provided with a plurality of groups of thread grooves (301), a screw rod (302) is threadedly sleeved on any of the thread grooves (301), a thread block (303) is threadedly sleeved on each group of the screw rods (302), a pressing plate (304) is rotatably connected to each group of the thread blocks (303), and each group of the screw rods (302) passes through the interior of the pressing plate (304).

6. The vehicle body gap precision welding equipment according to claim 1, characterized in that: The working frame (1) is rotatably connected to two reciprocating screw rods (5), each group of the reciprocating screw rods (5) is threadedly sleeved with a movable block 2 (501), each group of the reciprocating screw rods (5) is sleeved with a conical tooth 1 (502), each group of the conical tooth 1 (502) is meshed with a conical tooth 2 (503), each group of the conical tooth 2 (503) is commonly connected to a rotating rod 2 (504), the working frame (1) is connected to a motor 1, the output end of the motor 1 is sleeved with the rotating rod 2 (504), and the other end of the rotating rod 2 (504) is rotatably connected to the working frame (1).

7. The vehicle body gap precision welding equipment according to claim 6, characterized in that: Each group of movable blocks 2 (501) is connected to a side plate (6), and each group of side plates (6) is commonly connected to a side rod (601). Any of the side plates (6) is connected to a motor 2, and a reverse screw rod (602) is sleeved on the output end of the motor 2. The reverse screw rod (602) is rotatably connected to the other side plate (6) at a side away from the motor output end. The movable plate (101) is threadedly sleeved on the reverse screw rod (602), and the other end of the movable plate (101) is slidably connected to the side rod (601).

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