Welding, positioning and clamping mechanism for automobile tail end cross beam welded part

Abstract

The utility model relates to a positioning and clamping mechanism, belongs to the technical field of automobile production, and particularly relates to an automobile tail end beam welded part welding, positioning and clamping mechanism which comprises a welding stand and a taking and placing frame, the taking and placing frame is located on one side of the welding stand, a lifting plate is connected to the inner wall of the taking and placing frame in a sliding mode, an adjusting part is arranged in the lifting plate, and the mechanism further comprises a turnover arm. The overturning arm is connected with the adjusting piece, and an overturning clamp is arranged on the side, close to the welding frame table, of the overturning arm. The overturning motor is fixedly connected with one side of the overturning arm, and the output end of the overturning motor is connected with the overturning clamp; the automobile tail end beam turning-over device can adapt to welding-on work of automobile tail end beams of various specifications, meanwhile, turning-over is more convenient and faster, the positions of the beams cannot be affected by turning-over, and errors are reduced; the problem that when an existing cross beam needs to be overturned and welded, position deviation is likely to be generated, and the welding precision is affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of automobile production technology, and in particular to a welding positioning and clamping mechanism for a welded component of a car rear end crossbeam. Background Technology

[0002] The rear crossbeam welded assembly is an important component in the automotive body structure. It is usually located at the rear of the vehicle and is used to connect and support different parts of the body. By connecting the various components together through welding, a complete welded assembly can be formed, which can improve the strength of the vehicle body.

[0003] In the prior art, such as the Chinese patent with publication number CN209969943U, a welding positioning and clamping mechanism for a welded component of a car rear end crossbeam is disclosed, which relates to the field of welding technology. Each of the four corners of the bottom surface of the work plate is vertically connected to a sinking rod. A sinking groove is provided on the upper surface of the slide table, which slides and engages with the sinking rod. An elastic element is provided within the sinking groove; one end of the elastic element is fixedly connected to the bottom of the sinking groove, and the other end is fixedly connected to the bottom end of the sinking rod. A connecting rod is provided on the side of the sinking rod facing the end of the work plate. A support plate is vertically mounted on the slide table on the side of the work plate. A rotating shaft is rotatably mounted on the upper end of the support plate. A clamping rod and a rotating rod are vertically fixedly connected to the rotating shaft. A sliding groove is provided on the rotating rod, and the end of the connecting rod slides and engages with the sliding groove. This patent does not require pneumatic or hydraulic methods, relying solely on its own weight to achieve clamping, thus saving energy and reducing costs.

[0004] However, this patent still has shortcomings. In actual welding, the welding of the automotive rear crossbeam welded parts needs to be symmetrical. The current method is to weld one side of the small parts, flip it over, and then weld the other side of the small parts. When flipping, the welding position is prone to shift, resulting in welding offset, increased numerical error, and affecting welding quality. Therefore, a welding positioning and clamping mechanism for automotive rear crossbeam welded parts is proposed to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes a welding positioning and clamping mechanism for automotive rear end crossbeam welded parts, which can be adapted to the welding work of various specifications of automotive rear end crossbeams. At the same time, it is more convenient and faster to flip over, and the flipping will not affect the position of the crossbeam, thus reducing errors.

[0006] The technical solution to achieve the purpose of this utility model is: a welding positioning and clamping mechanism for a welded component of a car rear end crossbeam, including a welding frame and a pick-and-place frame, wherein the pick-and-place frame is located on one side of the welding frame, and a lifting plate is slidably connected to the inner wall of the pick-and-place frame, and an adjusting component is provided inside the lifting plate;

[0007] A flipping arm is connected to an adjusting component, and a flipping clamp is provided on the side of the flipping arm near the welding frame.

[0008] A flipping motor is fixedly connected to one side of the flipping arm, and the output end of the flipping motor is connected to the flipping fixture.

[0009] In some embodiments, an auxiliary fixing frame is fixedly connected to the top of the welding stand, and limit rods are slidably connected to both sides of the auxiliary fixing frame. An adaptation plate is slidably connected to the upper surface of the auxiliary fixing frame, and a spring is sleeved on the surface of the limit rod. One end of the spring is fixedly connected to one side of the adaptation plate, and the other end of the spring is fixedly connected to the inner wall of the auxiliary fixing frame.

[0010] In some embodiments, a lifting screw is rotatably connected to the inner bottom wall of the pick-and-place rack, a lifting motor is fixedly connected to the top of the pick-and-place rack, the output end of the lifting motor is coaxially fixed with the lifting screw, a lifting guide rod is fixedly connected to the inner bottom wall of the pick-and-place rack, the lifting plate is slidably connected to the lifting guide rod, and the lifting plate is screwed to the lifting screw.

[0011] In some embodiments, the adjusting member includes a bidirectional lead screw rotatably connected to the inner wall of the lifting plate, an adjusting motor is fixedly connected to one side of the lifting plate, the output end of the adjusting motor is coaxially fixed to the bidirectional lead screw, an adjusting guide rod is fixedly connected to the inner wall of the lifting plate, the flipping arm is screwed to the bidirectional lead screw, and the flipping arm is slidably connected to the adjusting guide rod.

[0012] In some embodiments, the flipping fixture includes a flipping block rotatably connected to one side of the flipping arm, a clamping rod slidably connected to the upper surface of the flipping block, a clamping plate fixedly connected to the bottom end of the clamping rod, a clamping screw rotatably connected to the upper surface of the clamping plate, and the clamping screw rotatably connected to the flipping block.

[0013] Compared with the prior art, the significant advantages of this utility model are:

[0014] Firstly, this utility model, through the set pick-and-place frame and flipping arm, uses a flipping fixture to clamp the crossbeam when flipping is required. Specifically, the clamping screw is rotated, which drives the clamping plate to contact the upper surface of the crossbeam, while the lower surface of the crossbeam contacts the flipping block, achieving a clamping and fixing effect. Then, the lifting motor is started, which drives the lifting screw to rotate, allowing the entire lifting plate and the crossbeam to move out of the range of the auxiliary fixing frame. The flipping motor is then started, which drives the flipping block to flip, and then the crossbeam is lowered. This allows the crossbeam to be flipped while minimizing the offset, ensuring welding accuracy and quality.

[0015] Secondly, this utility model, through the setting of the auxiliary fixing frame, when welding is performed, the crossbeam to be welded is placed on the welding frame. At this time, the crossbeam will slide down along the adapting plate, and at the same time, the adapting plate squeezes the spring. The reaction force of the spring will limit the position of the crossbeam, so that the crossbeam will not shift during welding, thus ensuring the accuracy of welding.

[0016] Thirdly, this utility model, through the adjustment component set in the lifting plate, drives the bidirectional lead screw to rotate by starting the adjustment motor, which enables the tilting arms on both sides to move at equal distances and can be adjusted according to different crossbeam lengths, making it more practical.

[0017] This solves the problem that existing crossbeams are prone to positional shifts when they need to be flipped for welding, which affects the welding accuracy. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the main structure provided in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the auxiliary fixing frame (side view) structure provided in one embodiment of the present invention;

[0021] Figure 3 This is a frontal planar structural schematic diagram provided in one embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Welding stand; 2. Pick-up and drop-off rack; 3. Lifting plate; 4. Adjusting components; 401. Two-way lead screw; 402. Adjusting motor; 403. Adjusting guide rod; 5. Tilting arm; 6. Tilting fixture; 601. Tilting block; 602. Clamping rod; 603. Clamping plate; 604. Clamping screw; 7. Tilting motor; 8. Auxiliary fixing frame; 9. Limiting rod; 10. Adaptive plate; 11. Spring; 12. Lifting lead screw; 13. Lifting motor; 14. Lifting guide rod. Detailed Implementation

[0024] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. 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 protection scope of the present invention.

[0025] This utility model provides an improved welding positioning and clamping mechanism for automotive rear end crossbeam welded components. The technical solution of this utility model is as follows:

[0026] like Figure 1 As shown, a welding positioning and clamping mechanism for a car rear end crossbeam welded component includes a welding frame 1 and a pick-and-place frame 2. The pick-and-place frame 2 is located on one side of the welding frame 1. A lifting plate 3 is slidably connected to the inner wall of the pick-and-place frame 2. An adjustment component 4 is provided inside the lifting plate 3. When it is necessary to flip the component, the lifting plate 3 can be used to separate the crossbeam from the welding frame 1 to make room for flipping. The mechanism also includes:

[0027] The flipping arm 5 is connected to the adjusting component 4. A flipping clamp 6 is provided on the side of the flipping arm 5 near the welding frame 1. There are two flipping arms 5, located on both sides of the crossbeam, which facilitates fixing from both ends.

[0028] The flip motor 7 is fixedly connected to one side of the flip arm 5, and the output end of the flip motor 7 is connected to the flip fixture 6.

[0029] like Figure 2 As shown, in one embodiment, an auxiliary fixing frame 8 is fixedly connected to the top of the welding stand 1. Limiting rods 9 are slidably connected to both sides of the auxiliary fixing frame 8. An adaptation plate 10 is slidably connected to the upper surface of the auxiliary fixing frame 8. A spring 11 is sleeved on the surface of the limiting rod 9. One end of the spring 11 is fixedly connected to one side of the adaptation plate 10, and the other end of the spring 11 is fixedly connected to the inner wall of the auxiliary fixing frame 8. After the crossbeam is placed on the welding stand 1, the crossbeam will slide down along the adaptation plate 10. At the same time, the adaptation plate 10 will squeeze the spring 11. The reaction force of the spring 11 will restrict the position of the crossbeam, so that the crossbeam will not deviate during welding, thus ensuring the accuracy of welding.

[0030] like Figure 3 As shown, in one embodiment, a lifting screw 12 is rotatably connected to the inner bottom wall of the pick-up and place rack 2, a lifting motor 13 is fixedly connected to the top of the pick-up and place rack 2, the output end of the lifting motor 13 is coaxially fixed with the lifting screw 12, a lifting guide rod 14 is fixedly connected to the inner bottom wall of the pick-up and place rack 2, a lifting plate 3 is slidably connected to the lifting guide rod 14, the lifting plate 3 is screwed to the lifting screw, and the portion of the lifting plate 3 located inside the pick-up and place rack 2 is respectively provided with threaded holes adapted to the lifting guide rod 14 and sliding holes adapted to the lifting guide rod 14.

[0031] In one embodiment, the adjusting component 4 includes a bidirectional lead screw 401 rotatably connected to the inner wall of the lifting plate 3. An adjusting motor 402 is fixedly connected to one side of the lifting plate 3. The adjusting motor 402 is a servo motor that can be electrically controlled to rotate forward and backward. The output end of the adjusting motor 402 is coaxially fixed with the bidirectional lead screw 401. An adjusting guide rod 403 is fixedly connected to the inner wall of the lifting plate 3. The flipping arm 5 is screwed to the bidirectional lead screw 401 and slidably connected to the adjusting guide rod 403. By starting the adjusting motor 402, the bidirectional lead screw 401 is driven to rotate, which allows the flipping arms 5 on both sides to move at equal distances. Adjustments can be made according to different beam lengths, making it more practical.

[0032] In one embodiment, the flipping clamp 6 includes a flipping block 601 rotatably connected to one side of the flipping arm 5. A clamping rod 602 is slidably connected to the upper surface of the flipping block 601. A clamping plate 603 is fixedly connected to the bottom end of the clamping rod 602. A clamping screw 604 is rotatably connected to the upper surface of the clamping plate 603. The clamping screw 604 is rotatably connected to the flipping block 601.

[0033] The specific working method is as follows: When the welding positioning and clamping mechanism for the automotive rear crossbeam is used, the crossbeam to be welded is first placed on the welding stand 1. At this time, the crossbeam will slide down along the adapting plate 10, and the adapting plate 10 will squeeze the spring 11. The reaction force of the spring 11 will restrict the position of the crossbeam, so that the crossbeam will not shift during welding, ensuring the accuracy of welding. After welding one side of the crossbeam, the crossbeam is clamped by the flipping fixture 6. Specifically, the clamping screw 604 is rotated, and the clamping screw 604 drives the clamping plate 603 to contact the upper surface of the crossbeam. At the same time, the lower surface of the crossbeam contacts the flipping block 601 to achieve the clamping and fixing effect. Then, the lifting motor 13 is started, and the lifting motor 13 drives the lifting screw 12 to rotate, so that the entire lifting plate 3 and the crossbeam are removed from the range of the auxiliary fixing frame 8. The flipping motor 7 is started, and the flipping motor 7 drives the flipping block 601 to flip. Then the crossbeam is lowered. The crossbeam can be flipped while minimizing the offset, ensuring welding accuracy and welding quality.

[0034] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A kind of automobile tail end crossbeam welding piece welding positioning clamping mechanism, including welding frame (1) and pick-and-place frame (2), it is characterized by: The taking and placing frame (2) is located on one side of the welding frame (1), the inner wall of the taking and placing frame (2) is slidably connected with a lifting plate (3), the lifting plate (3) is provided with an adjusting part (4), further comprising; A turnover arm (5) is connected with the adjusting part (4), the turnover arm (5) is provided with a turnover clamp (6) on the side close to the welding frame (1); A turnover motor (7) is fixedly connected with one side of the turnover arm (5), the output end of the turnover motor (7) is connected with the turnover clamp (6).

2. The welding fixture for a vehicle tail end cross beam welding assembly as set forth in claim 1, wherein: The top end of the welding frame (1) is fixedly connected with an auxiliary fixing frame (8), the two sides of the auxiliary fixing frame (8) are slidably connected with limiting rods (9), the upper surface of the auxiliary fixing frame (8) is slidably connected with an adaptive plate (10), the surface of the limiting rod (9) is sleeved with a spring (11), one end of the spring (11) is fixedly connected with one side of the adaptive plate (10), the other end of the spring (11) is fixedly connected with the inner wall of the auxiliary fixing frame (8).

3. The welding positioning and clamping mechanism for a welded component of a car rear end crossbeam according to claim 1, characterized in that: The inner bottom wall of the taking and placing frame (2) is rotatably connected with a lifting screw rod (12), the top end of the taking and placing frame (2) is fixedly connected with a lifting motor (13), the output end of the lifting motor (13) is coaxially fixed with the lifting screw rod (12), the inner bottom wall of the taking and placing frame (2) is fixedly connected with a lifting light rod (14), the lifting plate (3) is slidably connected with the lifting light rod (14), the lifting plate (3) is screw-connected with the lifting screw rod.

4. The welding fixture of claim 1, wherein: The adjusting part (4) comprises a bidirectional screw rod (401) rotatably connected with the inner wall of the lifting plate (3), one side of the lifting plate (3) is fixedly connected with an adjusting motor (402), the output end of the adjusting motor (402) is coaxially fixed with the bidirectional screw rod (401), the inner wall of the lifting plate (3) is fixedly connected with an adjusting light rod (403), the turnover arm (5) is screw-connected with the bidirectional screw rod (401), the turnover arm (5) is slidably connected with the adjusting light rod (403).

5. The welding fixture of claim 1, wherein: The turnover clamp (6) comprises a turnover block (601) rotatably connected with one side of the turnover arm (5), the upper surface of the turnover block (601) is slidably connected with a clamping rod (602), the bottom end of the clamping rod (602) is fixedly connected with a clamping plate (603), the upper surface of the clamping plate (603) is rotatably connected with a clamping screw rod (604), the clamping screw rod (604) is rotatably connected with the turnover block (601).

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