A welding tool for cushion block welding

Abstract

The application discloses a welding tool for buffering block welding, which comprises a mounting seat and a welding robot mounted on the top of the mounting seat, a support is fixed on the welding seat placed on the top of the mounting seat, a base is fixed on the top of the support through bolts, a driving gear ring is rotationally connected to the top of the base, a fixing plate for mounting a rotary clamping assembly is fixed on the top of the driving gear ring through bolts, the rotary clamping assembly comprises a clamping mechanism, a rotating mechanism and a positioning mechanism for feeding workpieces, and the workpieces are welded by the welding robot. The workpiece overturning mechanism driven by the servo motor two and the work station switching mechanism composed of the servo motor one, the inner gear ring and the driving gear ring are arranged, so that the tool can automatically switch the welding station, the workpiece can be driven to rotate by 90 degrees, 180 degrees and 270 degrees, the feeding and discharging are connected, and the welding seam is ensured to be in the best welding position.

Description

Technical Field

[0001] This invention relates to the field of buffer block welding technology, and in particular to a welding fixture for welding buffer blocks. Background Technology

[0002] With the rapid development of modern manufacturing, welding, as an indispensable joining process in mechanical manufacturing, directly affects product quality and manufacturing costs due to its degree of automation and production efficiency. In fields such as engineering machinery and automotive parts, the demand for welding multi-component composite structures, such as buffer blocks, is increasing. These workpieces are usually composed of multiple irregularly shaped main bodies stacked together, with complex structures and high requirements for welding precision. Traditional welding production methods mainly rely on manual operation or simple tooling. Manual welding is not only labor-intensive and inefficient, but also limited by the skill level of workers, making it difficult to guarantee the consistency and aesthetics of the weld. Furthermore, the harsh environment of high temperatures and arc light poses a threat to worker health. Existing conventional welding tooling is mostly a fixed structure, lacking flexible positioning and clamping mechanisms. This causes workpieces to easily shift due to thermal deformation during welding, affecting weld quality. For multi-faceted workpieces or workpieces requiring welding at multiple angles, traditional tooling often requires repeated manual disassembly, flipping, and repositioning, a cumbersome process that severely restricts production speed. Existing automated welding equipment has significant shortcomings in the unloading process after welding. Welded workpieces are often in a high-temperature, red-hot state. Due to thermal expansion and contraction, the workpiece is prone to jamming with positioning pins or clamps, making unloading difficult. This usually requires manual assistance by knocking or prying, which poses safety hazards and may damage the workpiece, failing to meet the needs of modern smart factories for fully unmanned and flexible production processes. Therefore, there is an urgent need for a comprehensive welding fixture that integrates high-precision positioning and multi-angle welding. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a welding fixture for welding buffer blocks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A welding fixture for welding buffer blocks includes a mounting base and a welding robot mounted on top of the mounting base. A support is fixed on a welding seat placed on top of the mounting base, and a base is fixed on top of the support. A drive gear ring is rotatably connected to the top of the base. A fixing plate for mounting a rotary clamping assembly is fixed to the top of the drive gear ring by bolts. The rotary clamping assembly includes a clamping mechanism, a rotating mechanism, and a positioning mechanism for loading workpieces. The workpieces are welded using the welding robot.

[0005] As a further embodiment of the present invention: the workpiece comprises, from top to bottom, workpiece body two, workpiece body one, and workpiece body three.

[0006] As a further embodiment of the present invention: the positioning mechanism includes an aircraft-shaped support plate and a support column fixed to its top, and positioning holes for insertion with the support column are provided on the surfaces of the workpiece body one and the workpiece body three.

[0007] As a further embodiment of the present invention: the clamping mechanism includes a support body fixed to the side of the aircraft-shaped support plate and a gripper rotatably connected to its inner surface via a rotating shaft. Both outer walls of the gripper are fixed with limiting plates for laterally limiting the workpiece body.

[0008] As a further embodiment of the present invention: an L-shaped plate is fixed to the back of the support body, a slide block is slidably connected to a guide rail fixed to the top of the L-shaped plate, a top pin for ejecting material is fixed to the side of the slide block, the side of the slide block and the bottom of the gripper are rotatably connected by a connecting rod, a servo motor is fixed to the inner wall of one side of the L-shaped plate, and a lead screw is fixed to the output end of the servo motor, the lead screw and the slide block are connected by a lead screw nut.

[0009] As a further embodiment of the present invention: the rotating mechanism includes a rear shaft fixed to the side of the L-shaped plate and a first shaft seat and a second shaft seat fixed to the top of the fixed plate, and the two sets of rear shafts are rotatably connected to the first shaft seat and the second shaft seat respectively. A second servo motor is fixed to the side of the second shaft seat, and the output end of the second servo motor is connected to one end of one set of rear shafts through a coupling.

[0010] As a further embodiment of the present invention: a servo motor is fixed to the outer wall of the bottom of the base, and the output end of the servo motor is connected to an internal gear ring that meshes with the drive gear ring through a coupling.

[0011] As a further embodiment of the present invention: the outer circumference of the support has a rotating shaft, and a toothed ring is fixed to the side of the rotating shaft by a connecting column. The side of the toothed ring is fixed with a bracket to multiple sets of feeding assemblies. The feeding assembly includes an elastic element fixed to the bracket and a collection box and a collection tray placed inside the elastic element. The bottom of the collection box has a leakage hole. The elastic element includes a mounting shell and a sliding rod slidably connected to the top of the mounting shell. A frame is fixed to the top of the sliding rod, and a tension sensor is fixed to the bottom of the sliding rod. The two ends of the spring sleeved on the outer wall of the sliding rod are respectively fixed to the inner wall of the top of the mounting shell and the outer wall of the top of the tension sensor.

[0012] As a further embodiment of the present invention: a connecting rod is fixed to the outer circumference of the drive gear ring, a U-shaped frame is welded to one end of the connecting rod, a rotating column is rotatably connected to the surface of the U-shaped frame, and a torsion spring is installed between the rotating column and the U-shaped frame. A toggle tooth that cooperates with the gear ring is fixed to the outer circumference of the rotating column, a slot is provided at the top of the toggle tooth, and a locking post that cooperates with the slot is fixed to the bottom of the frame.

[0013] As a further embodiment of the present invention: a partition is fixed to the bottom of the tension sensor, a permanent magnet is fixed to the bottom of the partition, an electromagnet that works in conjunction with the permanent magnet is fixed to the inner wall of the bottom of the mounting housing, and a control panel is installed on the side of the welding base.

[0014] Compared with the prior art, the present invention provides a welding fixture for welding buffer blocks, which has the following beneficial effects: 1. By setting up a station switching mechanism consisting of servo motor one, internal gear ring, and drive gear ring, and a workpiece flipping mechanism driven by servo motor two, the tooling can automatically switch welding stations and drive the workpiece to rotate at specific angles of 90°, 180°, and 270°, realizing the connection between loading and unloading, and ensuring that the weld is in the optimal welding position, which significantly improves welding quality and production efficiency.

[0015] 2. The clamping mechanism uses a servo motor to drive the slide block to move, and converts the linear motion into the rotational clamping action of the gripper through the connecting rod; it realizes automatic clamping and lateral limiting of the workpiece body two, effectively preventing thermal deformation and displacement during the welding process.

[0016] 3. The sliding motion of the slide block drives the top pin to lift the workpiece, which solves the problem of workpiece jamming caused by thermal expansion and contraction. The falling workpiece is caught by a collection box with spring buffer, and the welding slag falls into the collection tray through the leakage hole, avoiding workpiece accumulation and damage, realizing the initial separation of welding slag from workpiece, and keeping the work area clean.

[0017] 4. When the weight of the workpiece in the collection box reaches the set value, the spring compression drives the locking pin to insert into the slot. At this time, the actuating teeth can drive the toothed ring to rotate, automatically moving the full collection box out of the welding point, so that the empty collection box can enter the collection position to continue collecting materials.

[0018] 5. By controlling the electromagnet to generate repulsive force, the critical weight required for the collection box to trigger the transfer is changed, so that the tooling can adapt to the collection needs of workpieces of different weights, avoiding the cumbersome mechanical adjustment and improving the flexibility and intelligence of the equipment.

[0019] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a welding fixture for welding buffer blocks proposed in this invention; Figure 2 This is a schematic diagram of the main structure of a welding fixture for welding buffer blocks proposed in this invention; Figure 3 This is a schematic diagram of the top structure of the main body of a welding fixture for welding buffer blocks proposed in this invention; Figure 4 This is a schematic diagram of the overall structure of a rotating clamping assembly for welding fixtures used for welding buffer blocks, as proposed in this invention. Figure 5 This is a schematic diagram of the workpiece mounting structure of a welding fixture for welding buffer blocks proposed in this invention; Figure 6 This is a partial structural diagram of a rotating clamping assembly for welding fixtures used for welding buffer blocks, as proposed in this invention. Figure 7 This is a schematic diagram of the overall structure of the unloading assembly of a welding fixture for welding buffer blocks proposed in this invention. Figure 8 This is a schematic diagram of the drive mechanism structure of a welding fixture for welding buffer blocks proposed in this invention; Figure 9 This is a schematic diagram of the exploded structure of a welding fixture for welding buffer blocks proposed in this invention.

[0021] In the diagram: Mounting base 1; Welding robot 2; Internal gear ring 3; Fixing plate 4; Drive gear ring 5; Welding base 6; Control panel 7; Toothed ring 8; Base 9; Connecting rod 10; Connecting column 11; Support 12; Rotating shaft 13; Servo motor 1 14; Mounting shell 15; Servo motor 2 16; L-shaped plate 17; Servo motor 3 18; Workpiece body 1 19; Shaft seat 1 20; Gripper 21; Connecting rod 22; Slide 23; Lead screw 24; Shaft seat 2 25; Rear 26. End shaft; 27. Top pin; 28. Support body; 29. ​​Aircraft-type support plate; 30. Support column; 31. Limiting plate; 32. Guide rail; 33. Collection box; 34. Frame; 35. Slide rod; 36. Spring; 37. Permanent magnet; 38. Electromagnet; 39. Partition; 40. Tension sensor; 41. Locking post; 42. Collection tray; 43. Leakage hole; 44. U-shaped frame; 45. Rotating column; 46. Actuating tooth; 47. Slot; 48. Torsion spring; 49. Workpiece body two; 50. Workpiece body three. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] A welding fixture for welding buffer blocks, such as Figures 1 to 9 As shown, the system includes a mounting base 1 and a welding robot 2 mounted on top of the mounting base 1. A welding seat 6 is placed on the outer wall of the top of the mounting base 1, and a support 12 is fixed to the top of the welding seat 6 by bolts. A base 9 is fixed to the top of the support 12 by bolts. A drive gear ring 5 is rotatably connected to the top of the base 9, and a fixing plate 4 for mounting a rotary clamping assembly is fixed to the top of the drive gear ring 5 by bolts. The rotary clamping assembly includes a clamping mechanism, a rotating mechanism, and a positioning mechanism for loading workpieces. The workpiece, from top to bottom, includes a second workpiece body 49, a first workpiece body 19, and a third workpiece body 50, and the three are welded together by the welding robot 2. The positioning mechanism includes an aircraft-shaped support plate 29 and a support column 30 fixed on its top. The surfaces of the workpiece body 19 and the workpiece body 30 are provided with positioning holes for insertion into the support column 30. When positioning is required, the positioning holes on the workpiece body 30 and the workpiece body 19 are inserted into the support column 30 in sequence, and then the workpiece body 29 is placed on top of the workpiece body 19. The workpiece is placed using the aircraft-shaped support plate 29. The clamping mechanism consists of two sets fixed to both sides of the aircraft-shaped support plate 29. It includes a support body 28 fixed to the side of the aircraft-shaped support plate 29 and a gripper 21 rotatably connected to its inner surface via a rotating shaft. The end of the gripper 21 is provided with a clamping plate for clamping the top of the workpiece body 49. The outer walls on both sides of the gripper 21 are fixed with bolts to limit the workpiece body 49 laterally. The back of the support body 28 is fixed with an L-shaped plate 17 by bolts, and the top of the L-shaped plate 17 is fixed with a guide rail 32. The top of the guide rail 32 is slidably connected with a slide block 23, and the side of the slide block 23 and the bottom of the gripper 21 are rotatably connected by a connecting rod 22. The inner wall of one side of the L-shaped plate 17 is fixed with a servo motor 18 by bolts, and the output end of the servo motor 18 is fixed with a lead screw 24. The lead screw 24 and the slide block 23 are connected by a nut. The rotating mechanism includes a rear shaft 26 fixed to the side of the L-shaped plate 17 and a first shaft seat 20 and a second shaft seat 25 fixed to the top of the fixed plate 4 by bolts. The two sets of rear shafts 26 are rotatably connected to the first shaft seat 20 and the second shaft seat 25 respectively. The second shaft seat 25 is fixed to the side by bolts with a second servo motor 16, and the output end of the second servo motor 16 is connected to one end of one set of rear shafts 26 by a coupling. When welding is required, in the initial state, the aircraft-shaped support plate 29 is rotated to a horizontal position by the servo motor 216. The workpiece body 3 50 and workpiece body 1 19 are initially positioned from top to bottom using the positioning holes and the support column 30. Then, the workpiece body 2 49 is placed on top of the workpiece body 1 19 and the workpiece body 2 49 is laterally positioned by the limiting piece 31. After the workpiece is positioned, the workpiece body 1 19 drives the lead screw 24 to rotate. During the rotation of the lead screw 24, the slide 23 moves laterally under the guidance of the guide rail 32. During the return motion of the slide 23, the linear motion of the slide 23 is converted into the rotational motion of the gripper 21 relative to the support 28 by the connecting rod 22. The clamping plate at one end of the gripper 21 presses the top of the workpiece body 2 49, thereby ensuring the overall stability of the workpiece body 1 19, workpiece body 2 49 and workpiece body 3 50 relative to the aircraft-shaped support plate 29. During welding, the welding torch on the head of the welding robot 2 can be used to weld the weld seams of the workpiece separately. The welding robot receives preset welding paths and process parameters such as current, voltage, and speed through the control system, and drives the multi-degree-of-freedom robotic arm to carry the welding torch to the working position precisely. During the welding process, the robot uses sensors such as vision and arc tracking to monitor the weld seam status and molten pool changes in real time, and dynamically adjusts the motion trajectory and welding parameters to correct deviations. Thus, efficient, stable and high-quality automated welding operations can be achieved without human intervention. When it is necessary to rotate the workpiece to adjust the weld seam position during the welding process, the servo motor 216 can be used to indirectly drive the workpiece to rotate at specific angles of 90°, 180°, and 270° to achieve multi-face welding of the workpiece.

[0025] The slide block 23 is fixed with a top pin 27 for ejecting material on its side; During the welding process, the workpiece expands and contracts due to high temperature, causing the support column 30 and positioning hole to jam the welded workpiece. At this time, when the aircraft-shaped support plate 29 is flipped under the indirect drive of the servo motor 26, the workpiece's own weight alone cannot guarantee its smooth unloading. When the servo motor 318 drives the slide 23 to move through the lead screw 24, the connecting rod 22 is used to disengage the gripper 21 from the workpiece body 29. At the same time, the top pin 27 is driven by the slide 23 to gradually approach the transition between the bottom plane and the vertical plane of the workpiece body 29. The end of the top pin 27 is oblique and the transition is arc-shaped, so that after the top pin 27 contacts the arc transition, it lifts the welded workpiece as a whole, realizing the unloading of the workpiece.

[0026] The base 9 has a servo motor 14 fixed to its bottom outer wall by bolts, and the output end of the servo motor 14 is connected to an internal gear ring 3 that meshes with the drive gear ring 5 via a coupling. The servo motor 14 can drive the internal gear ring 3 to rotate. During the rotation, the internal gear ring 3 can mesh with the drive gear ring 5 to realize the rotation of the drive gear ring 5 and the fixed plate 4 relative to the base 9. This can realize the displacement of multiple sets of rotating clamping components relative to the welding robot 2. When multiple sets of workpieces need to be welded, multiple sets of workpieces can be placed on multiple sets of rotating clamping components respectively, and the rotation of the rotating clamping components can realize the switching of welding positions.

[0027] The support 12 has a rotating shaft 13 on its outer circumference, and a toothed ring 8 is fixed to the side of the rotating shaft 13 by a connecting column 11. The toothed ring 8 has multiple sets of feeding components fixed to the side by a bracket. The feeding components include an elastic element fixed to the bracket and a collection box 33 and a collection tray 42 placed inside the elastic element. The collection box 33 and the collection tray 42 are stacked together, and the bottom of the collection box 33 has a drain hole 43. The elastic element includes a mounting shell 15 and a sliding rod 35 slidably connected to the top of the mounting shell 15. A frame 34 is fixed to the top of the sliding rod 35. A tension sensor 40 is fixed to the bottom of the sliding rod 35 by screws. The two ends of the spring 36 sleeved on the outer wall of the sliding rod 35 are respectively fixed to the inner top wall of the mounting shell 15 and the outer top wall of the tension sensor 40. The damping between the rotating shaft 13 and the support 12 ensures the stability of the rotating shaft 13 relative to the support 12 in a static state. After the welded workpiece is ejected by the top pin 27, it can fall into the collection box 33 under its own gravity for collection, avoiding the accumulation of a large number of welded workpieces on the welding seat 6, which would be inconvenient for subsequent collection. The spring 36 can provide buffer protection for the welded workpiece. After the welded workpiece falls into the collection box 33, the welding slag remaining on its surface can be separated from the welded workpiece due to the vibration of the spring 36. The welding slag falls into the collection tray 42 through the leakage hole 43, and the collection tray 42 can achieve preliminary collection of the welding slag.

[0028] The outer circumference of the drive gear ring 5 is fixed with a connecting rod 10 by screws. A U-shaped frame 44 is welded to one end of the connecting rod 10, and a rotating column 45 is rotatably connected to the surface of the U-shaped frame 44. A torsion spring 48 is installed between the outer circumference of the rotating column 45 and the bottom outer wall of the U-shaped frame 44. A toggle tooth 46 that cooperates with the gear ring 8 is fixed to the outer circumference of the rotating column 45. A slot 47 is opened at the top of the toggle tooth 46, and a locking post 41 that cooperates with the slot 47 is fixed at the bottom of the frame 34. As the weight of the workpieces collected in the collection box 33 gradually increases, the spring 36 is continuously compressed, causing the mounting shell 15 to descend relative to its initial position. When the locking pin 41 moves down and inserts into the locking slot 47, the locking pin 41 and the locking slot 47 limit the movement between the actuating tooth 46 and the U-shaped frame 44. The actuating tooth 46 cannot rotate relative to the U-shaped frame 44 via the rotating pin 45. As the driving tooth ring 5 rotates, the actuating tooth 46 drives the toothed ring 8 to rotate synchronously. The collection box 33, after collecting the welded workpieces, is repositioned relative to the welding point. After the repositioning, the remaining set of empty collection boxes... Rotate 33 to the welding point so that the welded workpiece continues to be collected, preventing it from overflowing from the collection box 33. The operator can then remove the collection box 33, along with the collection tray 42, from the frame 34. After the collection box 33 is removed and reset, the locking pin 41 and the locking groove 47 disengage from each other. Therefore, when the actuating tooth 46 rotates, the torsion spring 48 cannot overcome the damping force between the support 12 and the rotating shaft 13. The torsion spring 48 undergoes elastic deformation, causing the actuating tooth 46 to bounce along the inner surface of the toothed ring 8. During this process, the collection box 33 remains stationary and cannot be driven to rotate for repositioning.

[0029] The tension sensor 40 has a partition 39 fixed at the bottom, and a permanent magnet 37 is fixed at the bottom of the partition 39 by screws. An electromagnet 38 that works with the permanent magnet 37 is fixed at the bottom inner wall of the mounting shell 15 by screws. When it is necessary to adjust the amount of workpieces collected in the collection box 33 in a single operation, the electromagnet 38 can be energized. After being energized, the electromagnet 38 generates a repulsive force on the permanent magnet 37. The pressure on the collection box 33 can be monitored by the tension sensor 40. In order for the locking pin 41 to be inserted into the locking slot 47, the number of welded workpieces collected in the collection box 33 needs to be increased to overcome the repulsive force of the electromagnet 38 on the permanent magnet 37 after it is energized, compared to the state when the electromagnet 38 is de-energized. Therefore, the amount of welded workpieces collected in the collection box 33 in a single operation can be adjusted in this way.

[0030] A control panel 7 is installed on the side of the welding base 6; The control panel 7 establishes an electrical connection with the welding robot 2, servo motor 14, servo motor 2 16, servo motor 3 18, electromagnet 38, and tension sensor 40 through an internally integrated controller such as a PLC or microprocessor. The operator sets the welding process parameters and automatic unloading weight threshold through the panel, and the panel then issues instructions to coordinate the actions of each component: first, it controls servo motor 2 16 to adjust the workpiece angle to cooperate with the robot 2 for welding, then drives servo motor 3 18 to complete clamping and ejection, and at the same time, it uses servo motor 14 to switch workstations, thereby realizing automated closed-loop control from loading, welding, unloading to collection. The control panel 7 establishes a signal connection with the tension sensor 40 and the electromagnet 38 through its internal circuitry. The tension sensor 40 collects the gravity data of the workpiece in the collection box 33 in real time and converts it into an electrical signal, which is then transmitted to the control unit. The tension sensor 40 can preferably be the LFS-01 / LFS-12 series, HW3-25.4, etc. When the weight is detected to reach a preset threshold, the control panel 7 issues a full material reminder signal through an audible and visual alarm module such as a buzzer or indicator light, prompting the operator to remove the full collection box 33 along with the collection tray 42 from the frame 34 in time, thereby realizing automated monitoring and human-machine interaction of the collection process.

[0031] Working principle: First, the servo motor 14 drives the fixed plate 4 to rotate to switch work positions via the control panel 7. Then, the servo motor 26 drives the aircraft-shaped support plate 29 to rotate horizontally, and the operator loads the workpiece. Next, the servo motor 318 drives the lead screw 24 to move the slide 23. The connecting rod 22 drives the gripper 21 to rotate and press the workpiece, which is then welded in conjunction with the welding robot 2. During this process, the servo motor 216 can drive the workpiece to rotate at a specific angle to achieve multi-angle welding. After welding, the slide 23 moves in the opposite direction to drive the top pin 27 to lift the workpiece and remove it. The workpiece falls into the collection box 33 below. When the weight of the workpiece in the box compresses the spring 36 to the threshold, the locking pin 41 engages with the slot 47. When the drive gear ring 5 rotates, it drives the toothed ring 8 to rotate, automatically removing the full collection box 33 and replacing it with an empty one.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding tool for welding of a cushion block, comprising a mounting base (1) and a welding robot (2) mounted on top of the mounting base (1), characterized in that, A support (12) is fixed on the welding seat (6) placed on the top of the mounting base (1). A base (9) is fixed on the top of the support (12). A drive gear ring (5) is rotatably connected to the top of the base (9). A fixing plate (4) for installing the rotary clamping assembly is fixed to the top of the drive gear ring (5) by bolts. The rotary clamping assembly includes a clamping mechanism, a rotating mechanism, and a positioning mechanism for feeding the workpiece. The workpiece is welded by the welding robot (2).

2. The welding fixture for welding buffer blocks according to claim 1, characterized in that, The workpiece, from top to bottom, includes workpiece body two (49), workpiece body one (19), and workpiece body three (50).

3. The welding fixture for welding buffer blocks according to claim 2, characterized in that, The positioning mechanism includes an aircraft-shaped support plate (29) and a support column (30) fixed on its top, and the surfaces of the workpiece body one (19) and the workpiece body three (50) are provided with positioning holes for insertion with the support column (30).

4. The welding fixture for welding buffer blocks according to claim 3, characterized in that, The clamping mechanism includes a support body (28) fixed to the side of the aircraft-type support plate (29) and a gripper (21) rotatably connected to its inner surface via a rotating shaft. Both sides of the outer wall of the gripper (21) are fixed with limiting plates (31) for laterally limiting the workpiece body two (49).

5. A welding fixture for welding buffer blocks according to claim 4, characterized in that, The support body (28) has an L-shaped plate (17) fixed on its back. A slide block (23) is slidably connected to a guide rail (32) fixed on the top of the L-shaped plate (17). A top pin (27) for lifting material is fixed on the side of the slide block (23). The side of the slide block (23) and the bottom of the gripper (21) are rotatably connected by a connecting rod (22). A servo motor (18) is fixed on the inner wall of one side of the L-shaped plate (17). A lead screw (24) is fixed at the output end of the servo motor (18). The lead screw (24) and the slide block (23) are connected by a lead screw nut.

6. The welding fixture for welding buffer blocks according to claim 5, characterized in that, The rotating mechanism includes a rear shaft (26) fixed to the side of the L-shaped plate (17) and a first shaft seat (20) and a second shaft seat (25) fixed to the top of the fixed plate (4). The two sets of rear shafts (26) are rotatably connected to the first shaft seat (20) and the second shaft seat (25) respectively. The second servo motor (16) is fixed to the side of the second shaft seat (25), and the output end of the second servo motor (16) is connected to one end of one set of rear shafts (26) through a coupling.

7. The welding fixture for welding buffer blocks according to claim 1, characterized in that, The base (9) has a servo motor (14) fixed on its bottom outer wall, and the output end of the servo motor (14) is connected to an internal gear ring (3) that meshes with the drive gear ring (5) via a coupling.

8. A welding fixture for welding buffer blocks according to claim 1, characterized in that, The support (12) has a rotating shaft (13) on its outer circumference. The rotating shaft (13) has a toothed ring (8) fixed on its side by a connecting column (11). The toothed ring (8) has multiple sets of feeding components fixed on its side by a bracket. The feeding components include an elastic element fixed on the bracket and a collection box (33) and a collection tray (42) placed inside the elastic element. The bottom of the collection box (33) has a drain hole (43). The elastic element includes a mounting shell (15) and a sliding rod (35) slidably connected to the top of the mounting shell (15). A frame (34) is fixed to the top of the sliding rod (35). A tension sensor (40) is fixed to the bottom of the sliding rod (35). The two ends of the spring (36) sleeved on the outer wall of the sliding rod (35) are respectively fixed to the inner wall of the top of the mounting shell (15) and the outer wall of the top of the tension sensor (40).

9. A welding fixture for welding buffer blocks according to claim 8, characterized in that, A connecting rod (10) is fixed to the outer circumference of the drive gear ring (5). A U-shaped frame (44) is welded to one end of the connecting rod (10). A rotating column (45) is rotatably connected to the surface of the U-shaped frame (44). A torsion spring (48) is installed between the rotating column (45) and the U-shaped frame (44). A toggle tooth (46) that cooperates with the toothed ring (8) is fixed to the outer circumference of the rotating column (45). A slot (47) is opened at the top of the toggle tooth (46). A locking post (41) that cooperates with the slot (47) is fixed at the bottom of the frame (34).

10. A welding fixture for welding buffer blocks according to claim 9, characterized in that, The tension sensor (40) has a partition (39) fixed at the bottom, a permanent magnet (37) fixed at the bottom of the partition (39), an electromagnet (38) that works with the permanent magnet (37) fixed on the inner wall of the bottom of the mounting shell (15), and a control panel (7) installed on the side of the welding seat (6).

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