A welding fixture clamp for machining

Abstract

The utility model provides a kind of welding tool holder for machining, it is related to the technical field of machining, including workbench, two symmetrical clamping mechanism and sliding mechanism of setting, through the accurate action of turnover subassembly, clamping block can switch between top and adaptive position, both can accommodate longer welding piece to carry out stable clamping, also can avoid sliding block blocking and realize the accurate butt joint of short welding piece, solve the adaptive problem of "long welding piece cannot be placed, short welding piece is difficult to butt joint" in prior art, substantially widen the range of application of clamp, simultaneously need not to replace clamp or complex adjustment, only through simple control can complete clamping mode switching, it is convenient to operate and reduce labor intensity, cooperate with the interval adjustment of sliding mechanism, further guarantee the positioning accuracy of different length welding piece, and, a set of clamp can satisfy the welding demand of welding piece of multiple specifications length, need not to equip multiple sets of special fixture for different length welding piece, improve welding quality and production efficiency to some extent.

Description

Technical Field

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

[0002] In the welding process of machining, welding fixtures are key equipment to ensure the welding accuracy of the workpiece and improve the welding efficiency. Currently, conventional welding fixtures usually include a worktable, symmetrically arranged clamping mechanisms, and sliding mechanisms for driving the clamping mechanisms to move closer or further away. By adjusting the distance between the two clamping mechanisms, different lengths of workpieces can be adapted to achieve clamping and positioning of the workpieces, which facilitates subsequent welding operations.

[0003] However, in actual use, the adaptability of such welding fixtures in the prior art is severely limited when dealing with weldments of varying lengths. If the weldment is too long, it cannot be placed in the clamping mechanism due to space limitations. If the weldment is too short, the two ends of the weldment are difficult to align and contact due to obstructions from structures such as sliding blocks, making welding impossible. To solve this problem, operators often need to replace fixtures of different specifications or make complex structural adjustments, which not only increases the complexity of the production process and reduces welding efficiency, but also increases equipment investment and maintenance costs, making it difficult to meet the diverse and efficient welding processing needs.

[0004] Therefore, it is necessary to provide a new welding fixture for machining to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a welding fixture for machining.

[0006] This utility model provides a welding fixture for machining, comprising: a worktable, two clamping mechanisms symmetrically arranged on the top of the worktable, both clamping mechanisms being slidably arranged on the top of the worktable, and a sliding mechanism for driving the two clamping mechanisms to move closer or further apart. Each clamping mechanism includes a sliding block, a clamping block, and a flipping assembly for clamping weldments of different lengths. The clamping block is located on top of the sliding block, and the sliding block and the clamping block are connected through the flipping assembly. The sliding block is slidably connected to the worktable.

[0007] The flipping assembly includes a fixed plate, a slider, and a rotating bracket. The clamping block is rotatably connected to the rotating bracket via a connecting shaft. The slider is slidably connected to the top of the slider block. A moving part for driving the slider to move is provided on one side of the slider. The bottom of the rotating bracket is fixedly connected to the top of the slider. The fixed plate is disposed on one side of the slider block. An inclined slide groove is provided on the fixed plate. A rotating block is provided at one end of the connecting shaft. The clamping block is slidably connected to the inclined slide groove via the rotating block.

[0008] Preferably, the bottom of the rotating block is provided with a roller, the top of the rotating block is fixedly connected to the connecting shaft, and the roller rolls in the inclined groove.

[0009] Preferably, the moving part includes a U-shaped block and a connecting block. One end of the U-shaped block is fixedly connected to the connecting block, one side of the connecting block is fixedly connected to the slider, and the end of the connecting block away from the U-shaped block is slidably connected to the slider. The other end of the U-shaped block is provided with a cylinder, and the telescopic rod of the cylinder is threadedly connected to the U-shaped block.

[0010] Preferably, the clamping block has a connecting plate at its bottom, a through hole on the connecting plate, a connecting shaft installed in the through hole, a placement groove on the clamping block, a bidirectional screw in the placement groove, and grippers at both ends of the bidirectional screw, with the two grippers threadedly connected to the bidirectional screw respectively.

[0011] Preferably, a rotating handle is provided on one side of the clamping block, and the center of the rotating handle passes through the clamping block and is fixedly connected to the bidirectional screw.

[0012] Preferably, the gripper is a V-shaped gripper, and both ends of the V-shaped gripper are provided with anti-slip texture.

[0013] Preferably, the sliding mechanism includes a bidirectional lead screw and two moving blocks disposed inside the worktable. The two moving blocks are symmetrically disposed on both sides of the bidirectional lead screw. The moving blocks are threadedly connected to the bidirectional lead screw. Both moving blocks are fixedly connected to the sliding block. A rotary motor is provided on one side of the worktable. The output shaft of the rotary motor passes through one side of the worktable and is fixedly connected to the bidirectional lead screw.

[0014] Preferably, the inclined slide includes an inclined section and two horizontal sections, with the two ends of the inclined section connected to the horizontal sections respectively, and the end of the inclined section away from the cylinder being higher than the end closer to the cylinder.

[0015] Compared with related technologies, the welding fixture for machining provided by this utility model has the following beneficial effects:

[0016] Through the precise movement of the flipping component, the clamping block can switch between the top and the fitting position. It can stably clamp longer weldments while avoiding the obstruction of the sliding block to achieve precise docking of shorter weldments. This solves the fitting problem of "long weldments cannot be placed and short weldments are difficult to dock" in the existing technology, greatly expanding the applicability of the fixture. At the same time, there is no need to change the fixture or make complex adjustments. The clamping mode can be switched through simple control, which is convenient to operate and reduces labor intensity. With the spacing adjustment of the sliding mechanism, the positioning accuracy of weldments of different lengths is further guaranteed, avoiding the skewing of the weld joint caused by misalignment. To a certain extent, it improves welding quality and production efficiency.

[0017] One set of fixtures can meet the welding needs of weldments of various lengths, eliminating the need for multiple sets of special fixtures for different lengths of weldments. This significantly reduces equipment purchase investment, simplifies process changeover, reduces clamping and rework time, and the fixture has a simple structure design and is easy to maintain. In the long run, it can reduce equipment maintenance costs and rework costs caused by welding defects, balancing production efficiency and economy, and meeting diverse and efficient welding processing needs. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of a welding fixture for machining provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the clamping mechanism.

[0020] Figure 3 for Figure 1 The diagram shows a second-view structural schematic of the clamping mechanism.

[0021] Figure 4 for Figure 1 The diagram shows the structure of the gripper.

[0022] Figure 5 for Figure 3 The diagram shown is a partial enlarged view of the structure.

[0023] The following are the labels in the diagram: 1. Workbench; 2. Sliding block; 3. Clamping block; 4. Fixing plate; 5. Slider; 6. Rotating bracket; 7. Connecting shaft; 8. Inclined slide; 9. Rotating block; 10. Roller; 11. U-shaped block; 12. Connecting block; 13. Cylinder; 14. Connecting plate; 15. Through hole; 16. Placement slot; 17. Double-acting screw; 18. Grip; 19. Rotating handle; 20. Anti-slip texture; 21. Double-acting lead screw; 22. Moving block; 23. Rotary motor. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of a welding fixture for machining provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the clamping mechanism. Figure 3 for Figure 1 The diagram shows a second-view structural schematic of the clamping mechanism. Figure 4 for Figure 1 The diagram shows the structure of the gripper. Figure 5 for Figure 3 The diagram shown is a partial enlarged view of the structure.

[0026] In the specific implementation process, such as Figures 1-5 As shown, a welding fixture for machining mainly consists of a worktable 1, two symmetrically arranged clamping mechanisms and a sliding mechanism. The worktable 1 serves as the load-bearing base, with a support frame at its bottom and a groove at its top to guide the sliding of the clamping mechanisms. The two clamping mechanisms move closer or further apart through the sliding mechanism to adjust the spacing and adapt to the clamping requirements of weldments of different lengths.

[0027] Each clamping mechanism includes a sliding block 2, a clamping block 3, and a flipping assembly. The top of the sliding block 2 provides a mounting surface for the flipping assembly. A fixing plate 4 is fixedly installed on the top of the sliding block 2 and has a guide groove that mates with the moving part. It is fixed to one side of the sliding block 2 and has an inclined slide groove 8. The inclined slide groove 8 has an inclined section and two horizontal sections at both ends. The end of the inclined section away from the cylinder 13 is higher than the end near the cylinder 13, forming an inclined angle to provide trajectory guidance for the flipping of the clamping block 3. The slider 5 is driven by the moving part to slide horizontally on the top of the sliding block 2. Its top is fixedly connected to the rotating bracket 6. The rotating bracket 6 is rotatably connected to the clamping block 3 through a connecting shaft 7. A rotating block 9 is installed at one end of the connecting shaft 7, and the bottom of the rotating block 9 is embedded in... A roller 10 is provided, which rolls along the inclined groove 8 to reduce friction. The moving part consists of a U-shaped block 11, a connecting block 12, and a cylinder 13. The cylinder 13 is fixed to the side wall of the sliding block 2. The telescopic rod of the cylinder 13 is threadedly connected to the U-shaped block 11, pushing the connecting block 12 to drive the slider 5 to move horizontally. When the cylinder 13 extends, the slider 5 moves away from the cylinder 13, and the rotating block 9 rises along the inclined groove 8, driving the clamping block 3 to rotate around the connecting shaft 7 to a vertical state. At this time, the roller 10 reaches the top, and the clamping block 3 rotates to be perpendicular to the worktable 1. When the cylinder 13 retracts, the slider 5 moves in the opposite direction, the rotating block 9 descends along the inclined groove, and the clamping block 3 rotates to a horizontal state. At this time, the roller 10 reaches the bottom.

[0028] The clamping block 3 has a connecting plate 14 at the bottom, which is assembled with the connecting shaft 7 through the through hole 15. The top has a placement groove 16, which houses a bidirectional screw 17. The threads at both ends of the bidirectional screw 17 turn in opposite directions. A rotating handle 19 is provided on one side of the clamping block 3. The center of the rotating handle 19 passes through the clamping block 3 and is fixedly connected to the bidirectional screw 17. V-shaped grippers 18 are threaded to both ends of the screw. The inner wall of the grippers 18 is provided with anti-slip texture 20 to enhance friction. The bidirectional screw 17 is driven to rotate by rotating the handle 19. The two grippers 18 are threaded to the screw. Due to the restriction of the placement groove 16, the two grippers 18 will not rotate under the drive of the rotating handle 19, but will slide along the placement groove 16, so that the two V-shaped grippers 18 move synchronously towards or in opposite directions, thereby clamping or releasing the weldment.

[0029] When welding short parts, cylinder 13 retracts, clamping block 3 is perpendicular to worktable 1, and the V-shaped grippers 18 of the two clamping blocks 3 face each other, forming a horizontal clamping space, avoiding the obstruction at the bottom of sliding block 2, and achieving precise docking. When welding long parts, cylinder 13 retracts, clamping block 3 flips to a horizontal state, at which time the tops of the two clamping blocks 3 are flush and the distance between them is reduced, and long weldments can be placed horizontally between the two clamping blocks 3 to achieve precise docking.

[0030] The sliding mechanism is driven by a bidirectional lead screw 21. A groove is provided on the top of the worktable 1. The bidirectional lead screw 21 is horizontally arranged inside the groove and fixed at both ends by bearings. One end is connected to the output shaft of the rotary motor 23. Two moving blocks 22 are symmetrically threaded to both sides of the bidirectional lead screw 21. Their tops are fixedly connected to the sliding block 2. The rotary motor 23 drives the bidirectional lead screw 21 to rotate. The two moving blocks 22 are threaded to the bidirectional lead screw 21. Due to the restriction of the groove, the two moving blocks 22 will not rotate with the bidirectional lead screw 21, but will slide along the groove. The two moving blocks 22 drive the sliding block 2 to move synchronously in opposite directions, so as to achieve precise adjustment of the clamping mechanism spacing.

[0031] The working principle provided by this utility model is as follows:

[0032] When welding long workpieces, place the near ends of the two long workpieces into the V-shaped grippers 18 of the two clamping blocks 3 respectively, rotate the handle 19 to clamp them, then start the rotary motor 23, adjust the distance between the two clamping mechanisms to a suitable position, align the butt joints of the workpieces, and perform welding. At this time, the cylinder 13 retracts (initial position of the cylinder 13), and the clamping block 3 flips to a horizontal state.

[0033] When welding short weldments, first start the cylinder 13 to extend the cylinder 13. At this time, the clamping block 3 slides along the inclined slide 8, so that the rotary handle is flipped to be perpendicular to the worktable 1. Then, the short weldment is placed horizontally between the two clamping blocks 3, and the handle 19 is rotated to clamp it. Finally, the rotary motor 23 is started to reduce the distance between the two clamping mechanisms to the length between the two short weldments, and welding is carried out.

[0034] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A welding fixture clamp for machining, comprising a workbench (1), two clamping mechanisms are symmetrically arranged on the top of the workbench (1), the two clamping mechanisms are slidably arranged on the top of the workbench (1), and a sliding mechanism for driving the two clamping mechanisms to move close to or away from each other is arranged on the workbench (1), characterized in that, Each clamping mechanism includes a sliding block (2), a clamping block (3), and a flipping assembly for clamping weldments of different lengths. The clamping block (3) is located on top of the sliding block (2). The sliding block (2) and the clamping block (3) are connected through the flipping assembly. The sliding block (2) is slidably connected to the worktable (1). The flipping assembly includes a fixed plate (4), a slider (5), and a rotating bracket (6). The clamping block (3) is rotatably connected to the rotating bracket (6) via a connecting shaft (7). The slider (5) is slidably connected to the top of the sliding block (2). A moving part for driving the slider (5) to move is provided on one side of the slider (5). The bottom of the rotating bracket (6) is fixedly connected to the top of the slider (5). The fixed plate (4) is set on one side of the sliding block (2). An inclined slide groove (8) is provided on the fixed plate (4). A rotating block (9) is provided at one end of the connecting shaft (7). The clamping block (3) is slidably connected to the inclined slide groove (8) via the rotating block (9).

2. The welding fixture for machining according to claim 1, characterized in that, The bottom of the rotating block (9) is provided with a roller (10), the top of the rotating block (9) is fixedly connected to the connecting shaft (7), and the roller (10) rolls in the inclined groove (8).

3. The welding fixture for machining according to claim 1, characterized in that, The movable component includes a U-shaped block (11) and a connecting block (12). One end of the U-shaped block (11) is fixedly connected to the connecting block (12), and one side of the connecting block (12) is fixedly connected to the slider (5). The end of the connecting block (12) away from the U-shaped block (11) is slidably connected to the sliding block (2). The other end of the U-shaped block (11) is provided with a cylinder (13), and the telescopic rod of the cylinder (13) is threadedly connected to the U-shaped block (11).

4. The welding fixture for machining according to claim 2, characterized in that, The clamping block (3) has a connecting plate (14) at its bottom. The connecting plate (14) has a through hole (15). The connecting shaft (7) is installed in the through hole (15). The clamping block (3) has a placement groove (16). The placement groove (16) has a bidirectional screw (17). Both ends of the bidirectional screw (17) have grippers (18). The two grippers (18) are threadedly connected to the bidirectional screw (17).

5. The welding fixture for machining according to claim 4, characterized in that, The clamping block (3) has a rotating handle (19) on one side, and the center of the rotating handle (19) passes through the clamping block (3) and is fixedly connected to the bidirectional screw (17).

6. The welding fixture for machining according to claim 5, characterized in that, The gripper (18) is a V-shaped gripper (18), and both ends of the V-shaped gripper (18) are provided with anti-slip textures (20).

7. The welding fixture for machining according to claim 1, characterized in that, The sliding mechanism includes a bidirectional lead screw (21) and two moving blocks (22) disposed inside the worktable (1). The two moving blocks (22) are symmetrically disposed on both sides of the bidirectional lead screw (21). The moving blocks (22) are threadedly connected to the bidirectional lead screw (21). Both moving blocks (22) are fixedly connected to the sliding block (2). A rotary motor (23) is provided on one side of the worktable (1). The output shaft of the rotary motor (23) passes through one side of the worktable (1) and is fixedly connected to the bidirectional lead screw (21).

8. The welding fixture for machining according to claim 1, characterized in that, The inclined chute (8) includes an inclined section and two horizontal sections. The two ends of the inclined section are connected to the horizontal sections respectively. The end of the inclined section away from the cylinder (13) is higher than the end close to the cylinder (13).

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