Flexible welding clamp holding tool

Abstract

This utility model discloses a flexible welding clamping fixture, including a base plate, two fixed frames, a clamping assembly, a closed lead screw module, and a positioning assembly. The base plate is a rectangular frame, and the two fixed frames are bolted to the base plate. The clamping assembly includes two slide rails, two sliders, a mounting frame, a horizontal plate, multiple gripper mounting blocks, multiple first clamping blocks, and multiple second clamping blocks. The two slide rails are bolted to their corresponding fixed frames, and the two sliders are slidably connected to their corresponding slide rails. Mounting frames are bolted to the opposite sides of the two sliders. The horizontal plate is bolted to the mounting frame, and the multiple gripper mounting blocks are bolted to the horizontal plate. The sliding clamping assembly adapts to different rectangular blocks, the beryllium copper clamping blocks improve stability, the alignment sensor enhances positioning accuracy, and the protective shell and bolted connection enhance safety and maintainability, thus contributing to improved quality and efficiency in the production of embedded parts.

Description

Technical Field

[0001] This utility model relates to the field of embedded part processing technology, and in particular to a flexible welding clamping fixture. Background Technology

[0002] In the field of embedded parts production, rectangular blocks, as core components, require extremely high precision, stability, and adaptability in their welding process. Currently, most clamping fixtures used for welding rectangular blocks in the industry employ traditional rigid structure designs, which present the following significant problems: 1. Poor clamping adaptability: Traditional tooling often has fixed gripper positions, which can only accommodate rectangular blocks of a single specification. When producing embedded rectangular blocks of different sizes and thicknesses, it is necessary to frequently replace the entire clamping assembly or adjust the overall structure of the tooling. This is not only cumbersome to operate, but also significantly increases equipment adjustment time, reduces production efficiency, and makes it difficult to meet the flexible production needs of modern production lines for multiple varieties and small batches. Second, low positioning accuracy: The positioning mechanism of existing tooling mostly relies on manual calibration, judging the placement of rectangular blocks by rulers or visual inspection. This not only results in large errors (usually exceeding 0.5mm), but also makes manual operation susceptible to factors such as fatigue and lack of experience, leading to poor consistency in the welding position of rectangular blocks from different batches. As embedded parts are load-bearing and fixing components, the welding position accuracy of the embedded parts directly affects the load-bearing performance of the final product. Excessive positioning errors can easily cause safety hazards. 3. Poor operational safety and maintenance convenience: Some of the moving transmission components of the tooling (such as lead screws and slide rails) are exposed. Welding slag and dust generated during the welding of rectangular blocks are easy to adhere to the surface of the transmission components, which leads to accelerated wear of the components and shortens the service life of the equipment.

[0003] Therefore, a flexible welding clamping fixture needs to be designed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a flexible welding clamping fixture. The fixture adapts to different rectangular blocks through a sliding clamping component, enhances stability with beryllium copper clamping blocks, improves positioning accuracy with a positioning sensor, and enhances safety and maintainability with a protective shell and bolt connection, thereby helping to improve the quality and efficiency of embedded parts production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A flexible welding clamping fixture includes a base plate, two fixing frames, a clamping assembly, a closed lead screw module, and a positioning assembly. The base plate is a rectangular frame, and the two fixing frames are installed on the base plate by bolts. The clamping assembly includes two slide rails, two sliders, a mounting frame, a horizontal plate, multiple gripper mounting blocks, multiple first clamping blocks, and multiple second clamping blocks. The two slide rails are bolted to their corresponding mounting frames. The two sliders are slidably connected to their corresponding slide rails. The opposing sides of the two sliders are fixedly connected to the mounting frames by bolts. The horizontal plate is bolted to the mounting frames. The multiple gripper mounting blocks are bolted to the horizontal plate. Each first clamping block is fixedly connected to its corresponding gripper mounting block. Multiple L-shaped blocks are bolted to the base plate. The multiple L-shaped blocks are bolted together to a vertical plate. Multiple second clamping blocks are mounted on the vertical plate. The positions of the first clamping blocks and the second clamping blocks correspond one-to-one.

[0006] Preferably, the enclosed lead screw module includes a protective shell, a servo motor, a module body, a lead screw, and a moving block. The moving block is threaded onto the lead screw and slidably connected to the inner wall of the module body. The module body has strip-shaped openings on both the left and right sides. The moving block has strip-shaped openings on both the left and right sides and is fixedly connected to a horizontal plate by multiple bolts. The protective shell is mounted on a base plate by multiple bolts. The servo motor and the reducer are both installed inside the protective shell. The output shaft of the servo motor is fixedly connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the lead screw.

[0007] Preferably, the positioning component includes a fixing column fixedly connected to the inner wall of the left side of the base plate, a third clamping block is installed on the fixing column, a fixing plate is fixedly connected to the fixing column by multiple bolts, and an alignment sensor is installed on the fixing plate.

[0008] Preferably, the adjacent sides of the horizontal plate and the vertical plate are fixedly connected with bottom support blocks by bolts, and the first clamping block, the second clamping block, the third clamping block and the bottom support block are all made of beryllium copper.

[0009] Preferably, each bolt is provided with a bakelite ring between it and the connected component. The bakelite ring is fitted onto the bolt shank and located between the bolt head and the surface of the connected component.

[0010] Preferably, a plurality of hanging rings are fixedly connected to the upper end of the base plate.

[0011] Compared with existing technologies, the advantages of this device are: Compared with existing technologies, this device breaks through the limitations of traditional tooling fixed jaws through a sliding and adjustable clamping component. It can flexibly adapt to embedded rectangular blocks of different sizes and thicknesses, without the need for frequent replacement of parts or adjustment of the overall structure. This greatly improves the flexible production capacity of the tooling, meets the needs of multi-variety production, and significantly improves production efficiency. Compared with existing technologies, this device, through the "bolt-bakelite ring" buffer structure and the dual design of beryllium copper clamping blocks and support blocks, not only solves the problem of indentation damage to the rectangular block surface caused by rigid clamping, but also plays a certain role in insulation. While ensuring clamping stability, it effectively improves the yield of embedded parts. Compared with existing technologies, this device replaces traditional manual calibration with a positioning sensor, which controls the positioning error of the rectangular block to a smaller range, ensures the consistency of welding positions in multiple batches, and guarantees the load-bearing performance of the embedded parts; at the same time, the enclosed ground rail protective shell and the bolt detachable connection design reduce the wear of welding slag on the transmission components, resulting in lower operation and maintenance costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a flexible welding clamping tool proposed in this utility model; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the structure of a closed-loop screw module; Figure 4 for Figure 3 A schematic diagram of the internal structure.

[0013] In the diagram: 1. Base plate, 2. Fixing frame, 3. Slide rail, 4. Mounting frame, 5. Slider, 6. Horizontal plate, 7. Bottom support block, 8. Gripper mounting block, 9. First clamping block, 10. Lead screw, 11. L-shaped block, 12. Vertical plate, 13. Second clamping block, 14. Protective shell, 15. Hanging ring, 16. Fixing column, 17. Alignment sensor, 18. Third clamping block, 19. Servo motor, 20. Module body, 21. Moving block, 22. Strip opening. 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] Reference Figures 1-4A flexible welding clamping fixture includes a base plate 1, two fixed frames 2, a clamping assembly, a closed screw module, and a positioning assembly. Multiple hanging rings 15 are fixedly connected to the upper end of the base plate 1, facilitating the overall handling or repositioning of the fixture using lifting equipment, adapting to the fixture layout requirements of different production scenarios. The base plate 1 is a rectangular frame, and the two fixed frames 2 are bolted to the base plate 1. The clamping assembly includes two slide rails 3, two sliders 5, a mounting frame 4, a horizontal plate 6, multiple gripper mounting blocks 8, multiple first clamping blocks 9, and multiple second clamping blocks 13. The two slide rails 3 are bolted to the corresponding fixed frames 2. The two sliders 5 are slidably connected to the corresponding slide rails 3 one-to-one. The inner wall of the slider 5 fits tightly against the outer wall of the slide rail 3, and grease is applied between them to reduce sliding friction resistance and ensure... To ensure the smooth movement of subsequent components driven by slider 5, mounting brackets 4 are fixedly connected to the opposite sides of the two sliders 5 by bolts. Horizontal plate 6 is mounted on mounting bracket 4 by multiple bolts. Multiple gripper mounting blocks 8 are mounted on horizontal plate 6 by bolts. Each first gripper block 9 is fixedly connected to the corresponding gripper mounting block 8. Multiple L-shaped blocks 11 are fixedly connected to the base plate 1 by bolts. Multiple L-shaped blocks 11 are jointly fixedly connected to vertical plate 12 by bolts. Multiple second gripper blocks 13 are installed on vertical plate 12. The positions of the first gripper block 9 and the second gripper block 13 correspond one-to-one. The installation height of the second gripper block 13 is consistent with the installation height of the first gripper block 9. The clamping surfaces of the first gripper block 9 and the second gripper block 13 are designed with a beveled surface and a sawtooth structure to increase clamping strength and prevent the embedded parts from falling off after the tooling is flipped.

[0016] The enclosed lead screw module includes a protective shell 14, a servo motor 19, a module body 20, a lead screw 10, and a moving block 21. The moving block 21 is threaded onto the lead screw 10 and slidably connected to the inner wall of the module body 20. The left and right sides of the module body 20 are provided with strip-shaped openings 22. The left and right sides of the moving block 21 are connected through the strip-shaped openings 22 and fixedly connected to the horizontal plate 6 by multiple bolts. The connection between the moving block 21 and the horizontal plate 6 is provided with reinforcing ribs to enhance the structural strength of the connection and prevent the connection from breaking when the moving block 21 moves the horizontal plate 6. The protective shell 14 is installed on the base plate 1 by multiple bolts. The servo motor 19 and the reducer are both installed inside the protective shell 14. The output shaft of the servo motor 19 is fixedly connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to the lead screw 10. The output shaft of the reducer and the lead screw 10 are also connected by a coupling, and a dust cover is provided on the outside of the coupling to prevent dust from entering and affecting the rotational accuracy of the connection.

[0017] The positioning component includes a fixed column 16 fixedly connected to the inner wall of the left side of the base plate 1. A third clamping block 18 is installed on the fixed column 16. A fixing plate is fixedly connected to the fixed column 16 by multiple bolts. An alignment sensor 17 is installed on the fixing plate. The detection direction of the alignment sensor 17 is towards the area above the bottom support block 7. It can detect in real time whether the rectangular block is placed in the preset position. Its detection signal can be transmitted to the control system of the tooling to facilitate timely adjustment of the rectangular block position.

[0018] The horizontal plate 6 and the vertical plate 12 are each fixedly connected to the bottom support block 7 by bolts on adjacent sides. The first clamping block 9, the second clamping block 13, the third clamping block 18 and the bottom support block 7 are all made of beryllium copper.

[0019] Each bolt is fitted with a bakelite ring between itself and the connected component. The bakelite ring is fitted onto the bolt shank and located between the bolt head and the surface of the connected component, serving as an insulating element.

[0020] The functional principle of this utility model can be explained through the following operation: First, the material handling robot arm moves the pre-embedded rectangular block to the tooling equipment. At this time, the alignment sensor 17 installed on the fixing plate of the fixing column 16 on the left side of the base plate 1 in the positioning component will automatically identify the edge contour and placement position of the rectangular block and provide real-time feedback of the position signal. If there is a deviation, the robot arm will be prompted to make fine adjustments and corrections until the rectangular block is within the preset welding coordinate range, thereby solving the problem of large errors in traditional manual calibration. After positioning is completed, the clamping and adjustment operation is initiated. The enclosed lead screw module is activated, and the servo motor 19 drives the lead screw 10 to rotate through the reducer. The moving block 21, which is threadedly connected to the lead screw 10 and slides along the inner wall of the module body 20, will drive the horizontal plate 6 to move along the slide rail 3. The distance between the horizontal plate 6 and the vertical plate 12 is adjusted according to the thickness and width of the rectangular block, so that the first clamping block 9 of the clamping claw mounting block 8 on the horizontal plate 6 and the second clamping block 13 on the vertical plate 12 precisely fit against the two sides of the rectangular block to form a stable clamping.

[0021] After welding is completed, the robotic arm is moved to a suitable position to attract the rectangular block, and then the servo motor 19 is reversed to release the clamp.

[0022] 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 flexible welding clamping fixture, characterized in that, include: The base plate (1), two fixing frames (2), clamping assembly, enclosed screw module and positioning assembly, wherein the base plate (1) is a rectangular frame and the two fixing frames (2) are installed on the base plate (1) by bolts; The clamping assembly includes two slide rails (3), two sliders (5), a mounting bracket (4), a horizontal plate (6), multiple gripper mounting blocks (8), multiple first clamping blocks (9), and multiple second clamping blocks (13). The two slide rails (3) are bolted into the corresponding fixed brackets (2). The two sliders (5) are slidably connected to the corresponding slide rails (3) one-to-one. The opposing sides of the two sliders (5) are fixedly connected to the mounting brackets (4) by bolts. The horizontal plate (6) is mounted on the mounting brackets (4) by multiple bolts. The multiple gripper mounting blocks (8) are bolted into the mounting brackets (9). Block (8) is installed on horizontal plate (6) by bolts. Each first clamping block (9) is fixedly connected to the corresponding clamping claw mounting block (8). Multiple L-shaped blocks (11) are fixedly connected to the base plate (1) by bolts. Multiple L-shaped blocks (11) are fixedly connected to vertical plate (12) by bolts. Multiple second clamping blocks (13) are installed on vertical plate (12). The positions of the first clamping block (9) and the second clamping block (13) correspond one-to-one. The clamping blocks adopt a sloping surface + sawtooth structure design to increase clamping strength and prevent the embedded parts from falling off after the tooling is flipped.

2. The flexible welding clamping fixture according to claim 1, characterized in that: The enclosed lead screw module includes a protective shell (14), a servo motor (19), a module body (20), a lead screw (10), and a moving block (21). The moving block (21) is threaded onto the lead screw (10) and slidably connected to the inner wall of the module body (20). The module body (20) has strip openings (22) on both the left and right sides. The moving block (21) passes through the strip openings (22) on both the left and right sides and is fixedly connected to the horizontal plate (6) by multiple bolts. The protective shell (14) is installed on the base plate (1) by multiple bolts. The servo motor (19) and the reducer are both installed inside the protective shell (14). The output shaft of the servo motor (19) is fixedly connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to the lead screw (10).

3. The flexible welding clamping fixture according to claim 2, characterized in that: The positioning component includes a fixed column (16) fixedly connected to the inner wall of the left side of the base plate (1), a third clamping block (18) is installed on the fixed column (16), a fixing plate is fixedly connected to the fixed column (16) by multiple bolts, and an alignment sensor (17) is installed on the fixing plate.

4. The flexible welding clamping fixture according to claim 3, characterized in that: The horizontal plate (6) and the vertical plate (12) are each fixedly connected to a bottom support block (7) by bolts. The first clamping block (9), the second clamping block (13), the third clamping block (18) and the bottom support block (7) are all made of beryllium copper.

5. The flexible welding clamping fixture according to claim 4, characterized in that: Each bolt is provided with a bakelite ring between it and the connected component. The bakelite ring is fitted onto the bolt shank and located between the bolt head and the surface of the connected component.

6. The flexible welding clamping fixture according to claim 1, characterized in that: The upper end of the base plate (1) is fixedly connected with multiple hanging rings (15).

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