A welding assist fixture

Abstract

The utility model relates to welding fixture technical field especially relates to a kind of welding auxiliary fixture, including table body, the upper surface of table body is equipped with two groups of clamping components, the clamping component includes mounting plate, carousel and the three-jaw chuck fixedly connected with carousel, the surface of mounting plate is equipped with round mouth, carousel is rotatably installed in round mouth, the upper surface of table body is equipped with sliding slot, threaded rod is rotatably installed in sliding slot, the threaded rod is threadedly sleeved with the slider of L type, the front and back surface of slider is slidably contacted with sliding slot groove wall, one of mounting plate is fixedly installed on the upper surface of table body, another mounting plate is fixedly connected with slider;The back of table body is equipped with transmission assembly, and the transmission assembly is used to control two carousels to rotate together. The clamping requirement of the workpiece to be welded of different sizes can be quickly adapted, the workpiece is synchronously turned over by transmission assembly, disassembly is avoided, efficiency is improved, and welding quality can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding auxiliary fixture. Background Technology

[0002] In fields such as machinery manufacturing and steel structure processing, welding is a core connection process. Its processing accuracy and efficiency directly determine product quality and production progress. When manufacturing machinery, it is necessary to perform welding operations on the workpieces to be processed. In order to prevent the workpieces from moving during welding, auxiliary fixtures are often used to clamp the workpieces.

[0003] Existing welding fixtures cannot quickly adjust themselves to hold the workpiece according to its size. When welding circumferential or multi-faceted joints, traditional fixtures cannot achieve synchronous workpiece rotation. Often, it is necessary to weld part of the joint first, then pause the operation, disassemble the fixed workpiece, adjust the angle, re-clamp and fix it, and then weld the remaining joint. Disassembly and assembly can easily impact the welded joint, causing cracks and loosening, requiring re-welding and rework, which reduces efficiency. Moreover, the inaccurate positioning of parts after disassembly and assembly can easily lead to misalignment, affecting weld alignment and product precision and strength. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the prior art: existing welding fixtures cannot quickly adjust themselves to clamp the workpiece according to the size of the workpiece to be welded, and when welding the annular joint or multi-faceted joint of the workpiece, traditional fixtures cannot achieve synchronous flipping of the workpiece. It is often necessary to weld part of the joint first, then stop the operation, disassemble the fixed workpiece, adjust the angle and re-clamp and fix it, and then weld the remaining joint. Disassembly and assembly are prone to impact on the welded joint, causing cracks and loosening, requiring re-welding and rework, reducing efficiency. Moreover, the positioning of the parts after disassembly and assembly is inaccurate and prone to misalignment, affecting the alignment of the weld and the accuracy and strength of the product. Therefore, a welding auxiliary fixture is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding auxiliary fixture includes a platform. Two sets of clamping assemblies are provided on the upper surface of the platform. Each clamping assembly includes a mounting plate, a turntable, and a three-jaw chuck fixedly connected to the turntable. A circular opening is provided on the surface of the mounting plate, and the turntable is rotatably mounted within the circular opening. A sliding groove is provided on the upper surface of the platform, and a threaded rod is horizontally rotatably mounted within the sliding groove. An L-shaped slider is threaded onto the threaded rod, and the front and rear surfaces of the slider are in sliding contact with the groove wall. One mounting plate is fixedly mounted on the upper surface of the platform, and the other mounting plate is fixedly connected to the slider. The threaded rod is controlled to rotate by a drive assembly, and a transmission assembly is provided on the back of the platform. The transmission assembly is used to control the two turntables to rotate together.

[0006] Preferably, the drive assembly includes a drive motor fixedly mounted on the side wall of the platform, and the output shaft of the drive motor passes through a slide groove and is fixedly connected to one end of a threaded rod.

[0007] Preferably, the transmission assembly includes an L-shaped mounting plate fixedly installed on the back of the platform, an electric push rod fixedly installed on the surface of the mounting plate, two rack rods, and two gears. The drive shaft of the electric push rod is fixedly mounted with a convex rod. One end of the convex rod has a convex sliding opening. The end of one rack rod is fixedly connected to the convex rod via a connecting rod and meshes with one of the gears. The end of the other rack rod is fixedly mounted with a convex sliding block and meshes with the other gear. The sliding block is slidably installed in the sliding opening. A fixing rod is fixedly installed at the center of the turntable surface. The two gears are respectively fixedly sleeved on the two fixing rods.

[0008] Preferably, a rectangular collection groove is formed on the upper surface of the platform, and a buffer layer of rubber material is bonded inside the collection groove.

[0009] Preferably, the bottom of the chute is inclined and has a guide port that communicates with the collection trough, and the wall of the guide port is coated with a polytetrafluoroethylene coating.

[0010] Preferably, the front and rear walls of the slide groove are horizontally provided with rolling grooves, and the front and rear surfaces of the slider are provided with spherical grooves. Rolling balls are embedded in the spherical grooves, and the two rolling balls respectively roll into contact with the groove walls of the two rolling grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By using the sliding groove, threaded rod and L-shaped slider on the platform, and with one set of clamping components fixed to the slider, when the drive component drives the threaded rod to rotate, the slider can slide horizontally along the sliding groove, thereby adjusting the distance between the two sets of clamping components. This can quickly adapt to the clamping requirements of workpieces of different sizes to be welded, solving the problem that traditional fixtures cannot be flexibly adjusted according to the size of the workpiece. There is no need to replace the fixture or customize the clamping structure, which significantly improves adaptability and operating efficiency. Relying on the transmission components on the back of the platform, the electric push rod drives the convex rod to move. Through the sliding engagement of the convex sliding mouth and the sliding block, it drives the two rack rods to move synchronously, thereby driving the two gears and the connected turntable to rotate together. This causes the workpieces on the two sets of clamping components to rotate synchronously. This design allows the welding angle to be adjusted without disassembling the workpiece, effectively avoiding the problems of welded seams being impacted and cracked, and joints becoming loose due to repeated disassembly and assembly of traditional fixtures. It reduces rework for welding repair, improves production efficiency, and avoids the situation of inaccurate positioning and misalignment of parts after disassembly and assembly, ensuring weld alignment and ensuring product dimensional accuracy and structural strength. Attached Figure Description

[0012] Figure 1This is a front three-dimensional structural diagram of a welding auxiliary fixture proposed in this utility model; Figure 2 This is a top-view three-dimensional structural diagram of a welding auxiliary fixture proposed in this utility model; Figure 3 This is a partial side view of a welding auxiliary fixture proposed in this utility model; Figure 4 This is a partial three-dimensional disassembled structural diagram of the clamping component and the convex rod in this utility model; Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 6 for Figure 4 Enlarged view of the structure at point B in the middle.

[0013] In the diagram: 1. Body, 2. Mounting plate, 3. Turntable, 4. Three-jaw chuck, 5. Slide groove, 6. Threaded rod, 7. Slider, 8. Drive motor, 9. Electric push rod, 10. Rack and pinion, 11. Gear, 12. Convex rod, 13. Slide opening, 14. Sliding block, 15. Collection groove, 16. Guide opening, 17. Rolling groove, 18. Rolling ball, 19. Fixed rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0016] Reference Figures 1-3 A welding auxiliary fixture includes a platform 1. The upper surface of the platform 1 is provided with two sets of clamping components. The clamping components include a mounting plate 2, a turntable 3, and a three-jaw chuck 4 fixedly connected to the turntable 3. The surface of the mounting plate 2 has a circular opening, and the turntable 3 is rotatably installed in the circular opening. The upper surface of the platform 1 has a sliding groove 5. A threaded rod 6 is horizontally rotatably installed in the sliding groove 5. An L-shaped slider 7 is threaded onto the threaded rod 6. The front and rear surfaces of the slider 7 are in sliding contact with the groove wall of the sliding groove 5. One mounting plate 2 is fixedly installed on the upper surface of the platform 1, and the other mounting plate 2 is fixedly connected to the slider 7.

[0017] The threaded rod 6 is controlled to rotate by a drive assembly, which includes a drive motor 8 fixedly mounted on the side wall of the platform 1. The output shaft of the drive motor 8 passes through a slide groove 5 and is fixedly connected to one end of the threaded rod 6. A transmission assembly is provided on the back of the platform 1. The transmission assembly is used to control the two turntables 3 to rotate together. The transmission assembly includes an L-shaped mounting plate fixedly mounted on the back of the platform 1, an electric push rod 9 fixedly mounted on the surface of the mounting plate, two rack rods 10, and two gears 11. A convex rod 12 is fixedly mounted on the drive shaft of the electric push rod 9. One end of the convex rod 12 has a convex sliding opening 13. The end of one of the rack rods 10 is fixedly connected to the convex rod 12 through a connecting rod and meshes with one of the gears 11. Figure 6 As shown, a convex sliding block 14 is fixedly installed at the end of another rack rod 10 and meshes with another gear 11. The sliding block 14 is slidably installed in the sliding opening 13. A fixing rod 19 is fixedly installed at the center of the surface of the turntable 3. The gear 11 is fixedly sleeved on the two fixing rods 19 respectively.

[0018] When welding workpieces, first position the two workpieces to be welded separately. Clamp one workpiece using the three-jaw chuck 4 in the clamping assembly fixedly installed on the platform 1. Then clamp the other workpiece using the three-jaw chuck 4 in the clamping assembly fixedly connected to the slider 7. Ensure that the joint to be welded on the two workpieces is initially aligned. Then start the drive motor 8 fixed on the side wall of the platform 1. The output shaft of the drive motor 8 passes through the slide groove 5 and drives the threaded rod 6 in the slide groove 5 to rotate horizontally. Since the slider 7 is threaded onto the threaded rod 6 and its front and rear surfaces slide in contact with the groove wall of the slide groove 5, the rotation of the threaded rod 6 will drive the slider 7 to move horizontally along the slide groove 5, thereby driving the mounting plate 2 fixedly connected to the slider 7 and the corresponding clamping assembly to move until the distance between the two sets of clamping assemblies matches the workpiece size. After the welding joint is accurately aligned, turn off the drive motor 8 and then weld the joint.

[0019] When welding annular or multi-faceted joints of workpieces, the electric push rod 9 on the mounting plate on the back of the platform 1 is activated. The drive shaft of the electric push rod 9 drives the convex rod 12 to move. The convex rod 12 drives a rack rod 10 to move through a connecting rod. The rack rod 10 meshes with the corresponding gear 11, driving the gear 11 and the connected turntable 3 to rotate. On the other hand, the convex rod 12 slides with the convex sliding block 14 at the end of another rack rod 10 through the convex sliding opening 13, driving the rack rod 10 to move synchronously. It meshes with the corresponding gear 11, driving the other turntable 3 to rotate. Finally, the two turntables 3 rotate together, causing the workpieces on the two sets of clamping assemblies to rotate synchronously. After adjusting to the required welding angle, the electric push rod 9 is turned off, and subsequent welding operations can be carried out.

[0020] Reference Figure 4A rectangular collection trough 15 is provided on the upper surface of the platform 1. A rubber buffer layer is bonded inside the collection trough 15. The bottom of the chute 5 is inclined and has a guide port 16 connected to the collection trough 15. The wall of the guide port 16 is coated with polytetrafluoroethylene.

[0021] The rubber buffer layer bonded inside the collection tank 15 can absorb welding slag and debris generated during welding, preventing waste from directly impacting the platform 1 and causing damage. The bottom of the chute 5 is inclined and has a guide port 16 that communicates with the collection tank 15. The waste accumulated in the chute 5 can slide into the collection tank 15 along the guide port 16. The polytetrafluoroethylene coating on the wall of the guide port 16 can reduce waste adhesion and facilitate waste cleaning.

[0022] Reference Figure 4 and Figure 5 The sliding groove 5 has rolling grooves 17 horizontally opened on both the front and rear groove walls, and the slider 7 has spherical grooves on both the front and rear surfaces. Rolling balls 18 are rolled and embedded in the spherical grooves, and the two rolling balls 18 respectively roll and contact the groove walls of the two rolling grooves 17.

[0023] When the threaded rod 6 drives the slider 7 to move along the slide groove 5, the ball 18 rolls along the rolling groove 17, converting the sliding friction between the slider 7 and the slide groove 5 into rolling friction, reducing the moving resistance, making the slider 7 slide more smoothly, and ensuring the stability of the clamping component spacing adjustment.

[0024] In this invention, the sliding groove 5, threaded rod 6, and L-shaped slider 7 on the platform 1 cooperate with each other, and one set of clamping components is fixed to the slider 7. When the drive component drives the threaded rod 6 to rotate, the slider 7 can slide horizontally along the sliding groove 5, thereby adjusting the distance between the two sets of clamping components. This design can quickly adapt to the clamping requirements of workpieces of different sizes to be welded, solving the problem that traditional fixtures cannot be flexibly adjusted according to the size of the workpiece. There is no need to replace the fixture or customize the clamping structure, which significantly improves adaptability and operating efficiency. Relying on the transmission component on the back of the platform 1, the two turntables 3 are driven to rotate together, so that the workpieces on the two sets of clamping components are flipped synchronously. This design can adjust the welding angle without disassembling the workpiece, effectively avoiding the problems of welded seams being impacted and cracked, and joints being loosened due to repeated disassembly and assembly of traditional fixtures. It reduces rework for welding repair, improves production efficiency, and avoids the situation of inaccurate positioning and misalignment of parts after disassembly and assembly, ensuring the alignment of the weld seam and ensuring the dimensional accuracy and structural strength of the product.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding auxiliary fixture, comprising a platform (1), characterized in that, The upper surface of the platform (1) is provided with two sets of clamping components. The clamping components include a mounting plate (2), a turntable (3), and a three-jaw chuck (4) fixedly connected to the turntable (3). The mounting plate (2) has a round opening on its surface. The turntable (3) is rotatably installed in the round opening. The upper surface of the platform (1) has a sliding groove (5). A threaded rod (6) is horizontally rotatably installed in the sliding groove (5). An L-shaped slider (7) is threaded onto the threaded rod (6). The front and rear surfaces of the slider (7) are in sliding contact with the groove wall of the sliding groove (5). One of the mounting plates (2) is fixedly installed on the upper surface of the platform (1), and the other mounting plate (2) is fixedly connected to the slider (7). The threaded rod (6) is controlled to rotate by a drive assembly. The back of the platform (1) is provided with a transmission assembly, which is used to control the two turntables (3) to rotate together.

2. The welding auxiliary fixture according to claim 1, characterized in that, The drive assembly includes a drive motor (8) fixedly installed on the side wall of the platform (1), and the output shaft of the drive motor (8) passes through the slide groove (5) and is fixedly connected to one end of the threaded rod (6).

3. The welding auxiliary fixture according to claim 1, characterized in that, The transmission assembly includes an L-shaped mounting plate fixedly installed on the back of the platform (1), an electric push rod (9) fixedly installed on the surface of the mounting plate, two rack rods (10) and two gears (11). The drive shaft of the electric push rod (9) is fixedly mounted with a convex rod (12). One end of the convex rod (12) is provided with a convex sliding opening (13). The end of one rack rod (10) is fixedly connected to the convex rod (12) through a connecting rod and meshes with one of the gears (11). The end of the other rack rod (10) is fixedly mounted with a convex sliding block (14) and meshes with the other gear (11). The sliding block (14) is slidably installed in the sliding opening (13). A fixing rod (19) is fixedly installed at the center of the surface of the turntable (3). The two gears (11) are respectively fixedly sleeved on the two fixing rods (19).

4. The welding auxiliary fixture according to claim 1, characterized in that, The upper surface of the platform (1) is provided with a rectangular collection groove (15), and a rubber buffer layer is bonded inside the collection groove (15).

5. A welding auxiliary fixture according to claim 4, characterized in that, The bottom of the chute (5) is inclined and has a guide port (16) that is connected to the collection trough (15). The wall of the guide port (16) is coated with polytetrafluoroethylene.

6. A welding auxiliary fixture according to claim 1, characterized in that, The sliding groove (5) has rolling grooves (17) horizontally opened on both the front and rear walls. The slider (7) has spherical grooves on both the front and rear surfaces. Rolling balls (18) are embedded in the spherical grooves. The two rolling balls (18) roll and contact the groove walls of the two rolling grooves (17) respectively.

Images