An overturning welding device and method for fastener processing

Abstract

The present invention relates to the technical field of fastener welding processing, and discloses a flipping and welding device and method for fastener processing. The flipping and welding device includes a bracket, on which an electric slide is installed. A three-axis moving slide is arranged on the electric slide, and a welding torch is installed on the three-axis moving slide. A screw clamp is rotatably installed on a moving plate, and a head clamp is arranged on the side of the screw clamp. The head clamp is arranged corresponding to the screw clamp. The screw clamp and the head clamp press the screw and the bolt head tightly. A welding table is installed on the bottom side of the bracket. A connecting rod is arranged below the head clamp, and one end of the connecting rod is connected to the moving plate. A first gear is installed on the side of the head clamp away from the screw clamp. A first rack for meshing with the first gear is arranged on the welding table. When the first gear meshes with the first rack, the head clamp realizes flipping. The contact position between the screw and the bolt head is not prone to relative sliding, reducing the uneven distribution of welding thermal stress and avoiding the generation of weld defects.

Description

Technical Field

[0001] The present invention relates to the technical field of fastener welding processing, and specifically to a flipping welding device and method for fastener processing. Background Art

[0002] During the fastener welding process, the welded parts will be heated by high temperature, thus generating thermal stress. If the flipping is not stable, it will cause additional impact or vibration to the welded parts during the flipping process, and further make the thermal stress distribution uneven, increasing the risk of welding defects (such as cracks, deformations, etc.). Stable flipping can ensure that the welded parts are evenly heated during the heating and cooling processes, reduce the imbalance of thermal stress, and thus improve the welding quality.

[0003] The existing fastener welding flipping devices control the rotation of the screw and the bolt head respectively. However, if the screw and the bolt head rotate independently, it is inevitable that the rotation of the screw and the bolt head will be asynchronous during rotation, resulting in relative sliding at the contact part between the screw and the bolt head, thus making the welding thermal stress distribution uneven and generating welding defects; Therefore, it does not meet the existing requirements, and for this reason, we propose a flipping welding device and method for fastener processing. Summary of the Invention

[0004] The present invention provides a flipping welding device and method for fastener processing, which have the beneficial effects of synchronous rotation of the screw and the bolt head, not easy to generate relative sliding at the contact position between the screw and the bolt head, reducing the uneven distribution of thermal stress, and reducing weld defects, and solves the problem that the existing fastener welding flipping devices are inevitably asynchronous in the rotation of the screw and the bolt head during rotation, resulting in relative sliding at the contact part between the screw and the bolt head, thus making the welding thermal stress distribution uneven and generating welding defects mentioned in the above background art.

[0005] The present invention provides the following technical solution: A flipping welding device for fastener processing, including a bracket, an electric sliding table is installed on the bracket, a three-axis moving sliding table is arranged on the electric sliding table, a welding torch is installed on the three-axis moving sliding table, a moving plate is installed on the slider of the electric sliding table, a screw clamp is rotatably installed on the moving plate, a head clamp is arranged on the side of the screw clamp, the head clamp is correspondingly arranged with the screw clamp, and the screw clamp and the head clamp press the screw and the bolt head tightly;

[0006] A welding table is installed at the bottom side of the bracket, a connecting rod is arranged below the head clamp, one end of the connecting rod is connected to the moving plate, a first gear is installed on the side of the head clamp away from the screw clamp, a first rack for meshing with the first gear is arranged on the welding table, and when the first gear meshes with the first rack, the head clamp realizes flipping.

[0007] As an alternative solution for a flipping and welding device used in the processing of fasteners according to the present invention, wherein: a pair of connecting sleeves are installed on the moving plate, a connecting spring is arranged inside the connecting sleeve, the connecting rod is slidably installed in the connecting sleeve, one end of the connecting rod contacts the connecting spring, and the other end of the connecting rod is installed on the moving block.

[0008] As an alternative solution for a flipping and welding device used in the processing of fasteners according to the present invention, wherein: a moving block is slidably installed on the welding table, an installation groove is formed in the moving block, the head fixture is rotatably installed in the installation groove, a rotating sleeve is rotatably installed on the moving plate, a moving sleeve is installed in the rotating sleeve, a pair of clamping grooves are arranged on the inner wall of the moving sleeve, and a pair of first convex blocks are arranged on the outer wall of the screw fixture, and the first convex blocks are slidably clamped with the clamping grooves.

[0009] As an alternative solution for a flipping and welding device used in the processing of fasteners according to the present invention, wherein: a first special-shaped groove is formed on the welding table, the first special-shaped groove includes a first straight sliding groove, an arc-shaped sliding groove, and a second straight sliding groove, the first straight sliding groove, the arc-shaped sliding groove and the second straight sliding groove are arranged in sequence, and the second straight sliding groove is parallel and corresponding to the first rack;

[0010] A slider is installed at the bottom of the moving block, and the slider is slidably installed in the first special-shaped groove;

[0011] When the slider slides in the arc-shaped sliding groove, the moving block moves towards the moving plate at the same time, and the bolt head and the screw are butted and fitted;

[0012] When the slider slides in the second straight sliding groove, the head fixture drives the screw fixture to rotate one week.

[0013] As an alternative solution for a flipping and welding device used in the processing of fasteners according to the present invention, wherein: a baffle for shielding welding slag is installed on the welding table, the baffle is arranged adjacent to the first special-shaped groove, and the baffle is in sliding contact with the moving block.

[0014] As an alternative solution for a flipping and welding device used in the processing of fasteners according to the present invention, wherein: a second gear is rotatably installed on one side of the moving plate, the second gear is coaxially connected with the rotating sleeve, a second rack is installed on the welding table, the second gear is intermittently engaged with the second rack, and the second rack is arranged corresponding to the first rack;

[0015] When the first gear rotates, the second gear rotates synchronously.

[0016] As an optional solution of the flip welding equipment for fastener processing described in the present invention, an elastic member is fixedly installed in the installation groove, the elastic member is configured as an annular rubber pad, the elastic member is located between the head clamp and the moving block, and the head clamp is in sliding contact with the elastic member.

[0017] As an optional solution of the flip welding device for fastener processing described in the present invention, wherein: a second special-shaped groove is opened at one end of the movable sleeve, and a second protrusion for changing the position of the movable sleeve is arranged on the inner wall of the rotating sleeve, and the second protrusion is slidably installed in the second special-shaped groove;

[0018] When the rotating sleeve rotates, the second protrusion abuts against the second special-shaped groove, and the movable sleeve moves toward the outside of the rotating sleeve.

[0019] As an optional solution of the flip welding equipment for fastener processing described in the present invention, a limiting plate is installed on the outside of the movable sleeve, a return spring is arranged on one side of the limiting plate, and one end of the return spring abuts against one end of the rotating sleeve.

[0020] The present invention also proposes a method for turning over welding equipment for fastener processing, including the following specific steps:

[0021] A1. Pre-welding treatment: remove impurities such as oil and rust from the surface of the fasteners, clean and polish the parts to be welded, and ensure that the welding area is flat and smooth;

[0022] A2. Docking process: Use the screw clamp and head clamp to position the fastener and the part to be welded. The head clamp automatically presses the bolt head and the screw before turning to ensure that there is no movement during the welding process;

[0023] A3. Welding process: The head fixture and the screw fixture rotate synchronously, driving the screw and the bolt head to rotate one circle, and at the same time, the welding gun is aimed at the connection between the screw and the bolt head for welding;

[0024] A4. Unloading process: After welding is completed, the fasteners are unloaded and the head fixture and screw fixture are restored to their initial positions.

[0025] The present invention has the following beneficial effects:

[0026] 1. The flipping and welding equipment and method for fastener processing. The moving plate and the moving block are connected by a connecting rod. Therefore, when the moving plate moves, it will drive the moving block to move forward, ensuring the synchronization of the movement of the screw clamp and the head clamp. Moreover, a first special-shaped groove is provided on the welding table, and a slider is installed at the bottom of the moving block. When the slider is in the first straight chute, the screw and the bolt head are loaded. When the slider slides in the arc chute, the moving block moves towards the moving plate at the same time, and the head clamp presses the bolt head and the screw tightly, thereby realizing the automatic docking of the screw and the bolt head. When the slider slides in the second straight chute, the first gear meshes with the first rack, and the head clamp rotates. Since the bolt head and the screw are pressed tightly, under the action of friction, the head clamp drives the screw clamp to rotate one week, thereby completing the welding. During this process, not only the movement between the screw and the bolt head is synchronous, but also the rotation of the screw and the bolt head themselves is synchronous, making it not easy for the contact position between the screw and the bolt head to generate relative sliding, thereby reducing the uneven distribution of welding thermal stress and reducing the generation of weld defects.

[0027] 2. The flipping and welding equipment and method for fastener processing. A rotating sleeve is rotatably installed on the moving plate, and the screw clamp is arranged in the rotating sleeve. A second gear is installed at one end of the rotating sleeve, and a second rack is installed on the welding table. The second gear meshes with the second rack intermittently, and the second rack is arranged corresponding to the first rack. When the first gear rotates, the second gear rotates synchronously. At this time, the screw clamp rotates actively, thereby further improving the synchronization and reliability of flipping during the welding process, so as to prevent the relative sliding of the contact surface between the screw and the bolt head when the bolt head drives the screw to rotate by friction, and further avoid the uneven distribution of welding thermal stress, ensuring the welding quality of the fastener.

[0028] 3. The flipping and welding equipment and method for fastener processing. A moving sleeve is installed in the rotating sleeve, and the screw clamp is clamped in the moving sleeve. A second special-shaped groove is provided at one end of the moving sleeve, and a second convex block is arranged on the inner wall of the rotating sleeve. The second convex block is slidably installed in the second special-shaped groove. When the rotating sleeve rotates, the second convex block abuts against the second special-shaped groove, guiding the moving sleeve to move towards the outside of the rotating sleeve. By using the screw to generate a small displacement towards the bolt head direction in cooperation with the elastic member, the screw and the bolt head are more closely fitted, further preventing the relative sliding of the contact surface between the screw and the bolt head, and further avoiding the uneven distribution of welding thermal stress, ensuring the welding quality of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0030] Figure 2 It is an exploded structural schematic Figure 1 .

[0031] Figure 3 Schematic diagram of the explosion structure of the present invention Figure 2 。

[0032] Figure 4 Schematic diagram of the enlarged structure at position A of the present invention.

[0033] Figure 5 Schematic diagram of the sectional structure of the screw clamp of the present invention.

[0034] Figure 6 Schematic diagram of the sectional structure of the head clamp of the present invention.

[0035] Figure 7 Schematic diagram of the top view structure of the present invention before welding.

[0036] Figure 8 Schematic diagram of the top view structure of the present invention during welding.

[0037] Figure 9 Schematic diagram of the structure of the soldering station of the present invention.

[0038] Figure 10 Schematic diagram of the enlarged structure of the structure at position B of the present invention.

[0039] In the figure: 100, bracket; 200, electric sliding table; 201, three-axis moving sliding table; 300, moving plate; 301, welding torch; 302, connecting sleeve; 303, second gear; 400, moving block; 401, first gear; 402, slider; 403, installation groove; 404, connecting rod; 405, connecting spring; 500, welding table; 501, first special-shaped groove; 502, baffle; 503, first rack; 504, first straight chute; 505, arc chute; 506, second straight chute; 507, second rack; 601, rotating sleeve; 602, moving sleeve; 603, clamping groove; 604, limiting plate; 605, reset spring; 606, second special-shaped groove; 607, second convex block; 701, head clamp; 702, elastic member; 703, screw clamp; 704, first convex block. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1. The purpose of this embodiment is to facilitate the solution of the problem that when the existing fastener welding turnover device rotates, it is inevitable that the screw and the bolt head rotate out of sync, resulting in relative sliding at the contact part between the screw and the bolt head, thus causing uneven distribution of welding thermal stress and welding defects. Please refer to Figures 1-10 , a turnover welding device for fastener processing, including a bracket 100, an electric slide 200 is installed on the bracket 100, a three-axis moving slide 201 is installed on the electric slide 200, a welding torch 301 is installed on the three-axis moving slide 201. The electric slide 200 is set as an electric screw slide. A moving plate 300 is installed on the sliding block of the electric slide 200. A screw clamp 703 is rotatably installed on the moving plate 300. A head clamp 701 is arranged on the side of the screw clamp 703. The head clamp 701 is arranged corresponding to the screw clamp 703. The screw clamp 703 and the head clamp 701 press the screw and the bolt head tightly.

[0042] Among them, the three-axis moving slide 201 is a common industrial automation device in the field. It can realize the translational movement of an object in three directions of X, Y, and Z, so as to complete the precise adjustment and positioning in three-dimensional space. The three-axis moving slide 201 usually consists of parts such as a base, a guide rail, a slider, a transmission device, and a control system. The specific structure and principle of the three-axis moving slide 201 are well known to those skilled in the art and will not be elaborated here.

[0043] In addition, please refer to Figure 1 , a welding table 500 is installed on the bottom side of the bracket 100. A connecting rod 404 is arranged below the head clamp 701. One end of the connecting rod 404 is connected to the moving plate 300. When the moving plate 300 moves, under the action of the connecting rod 404, the head clamp 701 will move synchronously with the screw clamp 703. A first gear 401 is installed on one side of the head clamp 701. A first rack 503 is arranged on the welding table 500. The first gear 401 meshes with the first rack 503 intermittently. When the first gear 401 meshes with the first rack 503, the head clamp 701 drives the screw clamp 703 to rotate one week. When the head clamp 701 and the screw clamp 703 rotate, the welding torch 301 welds the connection part between the screw and the bolt head.

[0044] Moreover, please refer to Figure 4 、 Figure 5 、 Figure 6, a moving block 400 is slidably mounted on the welding table 500. An installation groove 403 is formed in the moving block 400. The head fixture 701 is rotatably mounted in the installation groove 403. A rotating sleeve 601 is rotatably mounted on the moving plate 300. A moving sleeve 602 is mounted in the rotating sleeve 601. A pair of clamping grooves 603 are provided on the inner wall of the moving sleeve 602. A pair of first protrusions 704 are provided on the outer wall of the screw fixture 703. The first protrusions 704 are slidably engaged with the clamping grooves 603. During implementation, both the screw fixture 703 and the head fixture 701 are detachable, so as to replace screw fixtures 703 and head fixtures 701 of different models to adapt to fasteners of different models.

[0045] In addition, a pair of connecting sleeves 302 are mounted on the moving plate 300. A connecting spring 405 is arranged inside the connecting sleeve 302. A connecting rod 404 is slidably mounted in the connecting sleeve 302. One end of the connecting rod 404 contacts the connecting spring 405. The other end of the connecting rod 404 is mounted on the moving block 400. The design of the connecting spring 405 enables the moving block 400 to move towards the moving plate 300 while moving.

[0046] In addition, please refer to Figure 9 , a first special-shaped groove 501 is formed in the welding table 500. The first special-shaped groove 501 includes a first straight sliding groove 504, an arc-shaped sliding groove 505, and a second straight sliding groove 506. The first straight sliding groove 504, the arc-shaped sliding groove 505, and the second straight sliding groove 506 are arranged in sequence. The second straight sliding groove 506 is correspondingly arranged with the first rack 503. A slider 402 is mounted at the bottom of the moving block 400. The slider 402 is slidably mounted in the first special-shaped groove 501. When the slider 402 is in the first straight sliding groove 504, the screw and the bolt head are installed. At this time, the screw and the bolt head are separated. When the slider 402 slides in the arc-shaped sliding groove 505, the arc-shaped sliding groove 505 has a limiting effect on the slider 402. The moving block 400 moves towards the moving plate 300 at the same time, and the head fixture 701 presses the bolt head and the screw tightly. When the slider 402 slides in the second straight sliding groove 506, at this time, the first gear 401 is engaged with the first rack 503, and the head fixture 701 drives the screw fixture 703 to rotate one week. At the same time, the welding torch 301 welds the connection part of the screw and the bolt head.

[0047] In addition, a baffle 502 for blocking welding slag is mounted on the welding table 500. The baffle 502 is arranged adjacent to the first special-shaped groove 501, and the baffle 502 is in sliding contact with the moving block 400.

[0048] In this embodiment, a method for a turnover welding device for fastener processing is also proposed, including the following specific steps:

[0049] A1. Pre-welding treatment: remove impurities such as oil and rust from the surface of the fasteners, clean and polish the parts to be welded, and ensure that the welding area is flat and smooth;

[0050] A2. Docking process: Use the screw fixture 703 and the head fixture 701 to position the fastener and the part to be welded. The head fixture 701 automatically presses the bolt head and the screw before turning to ensure that there is no movement during the welding process;

[0051] A3. Welding process: The head fixture 701 and the screw fixture 703 rotate synchronously, driving the screw and the bolt head to rotate one circle, and at the same time, the welding gun 301 is aimed at the connection between the screw and the bolt head for welding;

[0052] A4. Cutting process: After welding is completed, the fastener is cut, and the head fixture 701 and the screw fixture 703 return to their initial positions.

[0053] Loading and unloading can be done manually or with the help of automated mechanical equipment.

[0054] In this embodiment: a connecting rod 404 is installed on the moving plate 300, and the other end of the connecting rod 404 is installed on the moving block 400, so when the moving plate 300 moves, it will drive the moving block 400 to move forward, thereby ensuring the synchronization of the movement of the screw clamp 703 and the head clamp 701, and a first special-shaped groove 501 is opened on the welding table 500, and a slider 402 is installed at the bottom of the moving block 400, and the slider 402 is slidably installed in the first special-shaped groove 501. When the slider 402 is in the first straight groove 504, the screw and the bolt head are separated, and when the slider 402 slides in the arc groove 505, the moving block 400 is simultaneously Moving toward the movable plate 300, the head clamp 701 presses the bolt head and the screw rod, thereby realizing automatic docking of the screw rod and the bolt head. When the slider 402 slides in the second straight slide groove 506, since the bolt head and the screw rod are pressed, under the action of friction, the head clamp 701 drives the screw clamp 703 to rotate one circle, thereby completing the welding. In this process, not only the movement between the screw rod and the bolt head is synchronized, but also the rotation of the screw rod and the bolt head is synchronized, so that the contact position of the screw rod and the bolt head is not easy to produce relative sliding, thereby reducing the uneven distribution of welding thermal stress and reducing the occurrence of weld defects.

[0055] Embodiment 2: This embodiment is intended to promote the solution to further improve the stability of the screw rod and the bolt head when they rotate synchronously. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figures 1-10, one end of the rotating sleeve 601 is installed with a second gear 303, and a second rack 507 is installed on the welding table 500. The second gear 303 is intermittently engaged with the second rack 507, and the second rack 507 is arranged in parallel correspondence with the first rack 503. When the first gear 401 rotates, the second gear 303 rotates synchronously.

[0056] It should be noted that the head fixture 701 presses the bolt head and the screw rod. However, the friction force between the screw rod and the bolt head is limited, and a certain torque is required when the screw rod fixture 703 rotates. Therefore, the head fixture 701 drives the screw rod fixture 703 to rotate only through the friction force between the screw rod and the bolt head, which may cause relative sliding between the screw rod and the bolt head. Therefore, the second gear 303 is provided to help the screw rod rotate actively.

[0057] In this embodiment, a rotating sleeve 601 is rotatably installed on the moving plate 300. The screw rod fixture 703 is arranged in the rotating sleeve 601. One end of the rotating sleeve 601 is installed with a second gear 303, and a second rack 507 is installed on the welding table 500. The second gear 303 is intermittently engaged with the second rack 507, and the second rack 507 is arranged corresponding to the first rack 503. When the first gear 401 rotates, the second gear 303 rotates synchronously, ensuring that the screw rod fixture 703 and the head fixture 701 rotate synchronously. Thus, when the bolt head drives the screw rod to rotate by friction, the relative sliding of the contact surface between the screw rod and the bolt head can be prevented, further avoiding the uneven distribution of welding thermal stress and ensuring the welding quality of the fastener.

[0058] Embodiment 3. The purpose of this embodiment is to further avoid the relative sliding between the screw rod and the bolt head. This embodiment is an improvement based on Embodiment 2. Specifically, please refer to Figures 1-10 , a second special-shaped groove 606 is formed at one end of the moving sleeve 602, and a second convex block 607 is arranged on the inner wall of the rotating sleeve 601. The second convex block 607 is slidably installed in the second special-shaped groove 606. When the rotating sleeve 601 rotates, the second convex block 607 abuts against the second special-shaped groove 606, and the moving sleeve 602 moves outward from the rotating sleeve 601. It should be noted that in order to weld the connection between the stud and the bolt head, the welding torch 301 needs to move synchronously with the stud so that the welding end of the welding torch 301 is aligned with the connection between the stud and the bolt head.

[0059] In addition, a limiting plate 604 is installed outside the moving sleeve 602, and a return spring 605 is arranged on one side of the limiting plate 604. One end of the return spring 605 abuts against one end of the rotating sleeve 601. When the welding is completed, under the action of the return spring 605, the moving sleeve 602 moves back into the rotating sleeve 601 to the initial position.

[0060] An elastic member 702 is fixedly installed in the installation groove 403. The elastic member 702 is set as an annular rubber pad. The head fixture 701 is in sliding contact with the elastic member 702. It should be noted that to squeeze the screw and the bolt head together, the displacement of the slider 402 needs to be precisely controlled during implementation. If the displacement of the slider 402 towards the moving plate 300 is insufficient, then the screw and the bolt head cannot be squeezed together. If the displacement of the slider 402 towards the moving plate 300 is too large, due to the rigidity of the screw and the bolt head itself, when the two are squeezed against each other, the screw and the bolt head themselves hardly deform. Therefore, the slider 402 will get stuck when sliding. Therefore, the elastic member 702 is provided to store the displacement of the bolt head, thus ensuring the normal function of the device.

[0061] In this embodiment, a moving sleeve 602 is installed in the rotating sleeve 601. The screw fixture 703 is engaged in the moving sleeve 602. A second special-shaped groove 606 is formed at one end of the moving sleeve 602. A second convex block 607 is provided on the inner wall of the rotating sleeve 601. The second convex block 607 is slidably installed in the second special-shaped groove 606. When the rotating sleeve 601 rotates, the second convex block 607 abuts against the second special-shaped groove 606, and the moving sleeve 602 moves outward from the rotating sleeve 601. At this time, the screw generates a small displacement towards the bolt head, making the contact surface between the screw and the bolt head fit more tightly, preventing relative sliding between the contact surfaces of the screw and the bolt head. In addition, the welding torch 301 and the stud move synchronously, so that the welding end of the welding torch 301 is aligned with the connection between the stud and the bolt head, further avoiding the uneven distribution of welding thermal stress and ensuring the welding quality of the fastener.

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0063] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A flip welding device for fastener processing, comprising a bracket, an electric slide is mounted on the bracket, a three-axis movable slide is arranged on the electric slide, a welding gun is mounted on the three-axis movable slide, and the characteristics are: A moving plate is installed on the slider of the electric slide, a screw clamp is rotatably installed on the moving plate, a head clamp is arranged on the side of the screw clamp, the head clamp is arranged correspondingly to the screw clamp, and the screw clamp and the head clamp press the screw and the bolt head; A welding table is installed on the bottom side of the bracket, a connecting rod is arranged below the head fixture, one end of the connecting rod is connected to the moving plate, a No. 1 gear is installed on the side of the head fixture away from the screw fixture, and a No. 1 rack for meshing with the No. 1 gear is arranged on the welding table. When the No. 1 gear meshes with the No. 1 rack, the head fixture is flipped; A moving block is slidably mounted on the welding table, a mounting groove is provided on the moving block, a head fixture is rotatably mounted in the mounting groove, a rotating sleeve is rotatably mounted on the moving plate, a moving sleeve is installed in the rotating sleeve, a pair of slots are provided on the inner wall of the moving sleeve, a pair of first protrusions are provided on the outer wall of the screw fixture, and the first protrusions are slidably engaged with the slots; A first special-shaped groove is provided on the welding table, and the first special-shaped groove includes a first straight slide groove, an arc-shaped slide groove, and a second straight slide groove. The first straight slide groove, the arc-shaped slide groove, and the second straight slide groove are arranged in sequence, and the second straight slide groove is parallel to and corresponds to the first rack; A sliding block is installed at the bottom of the moving block, and the sliding block is slidably installed in the first special-shaped groove; When the slider slides in the arc-shaped slide groove, the moving block moves toward the moving plate at the same time, and the bolt head and the screw rod are butted and fitted; When the slide block slides in the second straight slide groove, the head clamp drives the screw clamp to rotate one circle.

2. The flip welding equipment for fastener processing according to claim 1, characterized in that: A pair of connecting sleeves are installed on the moving plate, connecting springs are arranged in the connecting sleeves, and a connecting rod is slidably installed in the connecting sleeves, one end of the connecting rod contacts the connecting spring, and the other end of the connecting rod is installed on the moving block.

3. The flip welding equipment for fastener processing according to claim 1, characterized in that: A baffle plate for shielding welding slag is installed on the welding table. The baffle plate is arranged adjacent to the first special-shaped groove, and the baffle plate is in sliding contact with the moving block.

4. The flip welding equipment for fastener processing according to claim 1, characterized in that: A No. 2 gear is rotatably mounted on one side of the moving plate, the No. 2 gear is coaxially connected with the rotating sleeve, a No. 2 rack is mounted on the welding table, the No. 2 gear is intermittently meshed with the No. 2 rack, and the No. 2 rack is correspondingly arranged with the No. 1 rack; When gear number one rotates, gear number two rotates synchronously.

5. The flip welding equipment for fastener processing according to claim 1, characterized in that: An elastic member is fixedly installed in the installation groove. The elastic member is configured as an annular rubber pad. The elastic member is located between the head clamp and the moving block. The head clamp is in sliding contact with the elastic member.

6. The flip welding equipment for fastener processing according to claim 1, characterized in that: A second special-shaped groove is formed at one end of the movable sleeve, and a second protrusion for changing the position of the movable sleeve is provided on the inner wall of the rotating sleeve, and the second protrusion is slidably installed in the second special-shaped groove; When the rotating sleeve rotates, the second protrusion contacts the second special-shaped groove, and the movable sleeve moves toward the outside of the rotating sleeve.

7. The flip welding equipment for fastener processing according to claim 1, characterized in that: A limit plate is installed outside the movable sleeve, a return spring is arranged on one side of the limit plate, and one end of the return spring contacts one end of the rotating sleeve.

8. The method of flipping welding equipment for fastener processing according to claim 1, characterized in that: The specific steps include: A1. Pre-welding treatment: remove oil and rust from the surface of fasteners, clean and polish the parts to be welded, and ensure that the welding area is flat and smooth; A2. Docking process: Use the screw clamp and head clamp to position the fastener and the part to be welded. The head clamp automatically presses the bolt head and the screw before turning to ensure that there is no movement during the welding process; A3. Welding process: The head fixture and the screw fixture rotate synchronously, driving the screw and the bolt head to rotate one circle, and at the same time, the welding gun is aimed at the connection between the screw and the bolt head for welding; A4. Unloading process: After welding is completed, the fasteners are unloaded and the head fixture and screw fixture are restored to their initial positions.

Images