A welding fixture

Abstract

The utility model belongs to the technical field of seat manufacturing, especially a welding tool, in view of the low positioning accuracy of traditional welding tool, the poor operation flexibility, the deviation caused by the dependence on artificial positioning workpiece, and the problem that the design does not fully consider the convenience and safety, influence welding quality and efficiency etc.

Description

Technical Field

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

[0002] In the fields of seat manufacturing and mechanical assembly, welding fixtures are key equipment for ensuring precise assembly and efficient welding of components. However, with the ever-increasing demands of modern industry for product quality and production efficiency, traditional welding fixtures are no longer sufficient to meet the assembly and welding requirements of complex component combinations.

[0003] In existing technologies, in scenarios involving multi-component collaborative assembly, high-precision positioning, and rapid changeover production, such as the welding of key components like the leg support core mechanism, lifting linkage assembly, and motor synchronizing rod assembly, traditional tooling often faces problems such as insufficient positioning accuracy, poor operational flexibility, and cumbersome changeover adjustments.

[0004] Specifically, in the assembly and use of traditional welding fixtures, due to the lack of precise positioning and pressing mechanisms, the placement and fixing of parts often rely on manual operation, which is not only inefficient but also prone to positioning deviations due to human factors, affecting welding quality. In addition, traditional fixtures are not designed with full consideration of ease of operation and safety, and workers are prone to fatigue during long-term operation, which can lead to reduced accuracy in workpiece placement and increase the risk of operational errors.

[0005] To address the aforementioned problems, this utility model document proposes a welding fixture. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing welding fixtures, such as low positioning accuracy, poor operational flexibility, reliance on manual workpiece positioning leading to deviations, and insufficient consideration of convenience and safety in the design, which affects welding quality and efficiency. Therefore, this invention proposes a new welding fixture.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A welding fixture, including:

[0009] The first welding fixture includes a first mounting plate, four sets of first fixing components, two sets of third pressing mechanisms and one set of fourth pressing mechanisms. The first welding fixture is used to place and fix multiple parts to complete the combined assembly of four lifting linkage assemblies and one motor synchronizing rod assembly.

[0010] It also includes a second welding fixture, which includes a second mounting plate, two sets of second fixing components, two sets of third fixing components, two sets of sixth pressing mechanisms, two sets of eighth pressing mechanisms, two sets of ninth pressing mechanisms and one set of tenth pressing mechanisms. The second welding fixture is used to place and fix four lifting linkage assemblies and one motor synchronizing rod assembly, as well as other cooperating parts, to complete the combined assembly of the leg support core mechanism sub-assembly and the left linkage welding assembly.

[0011] It also includes a third welding fixture, which includes a third mounting plate, a fourth fixing component, a fifth fixing component, a sixth fixing component, and three sets of fourteenth pressing mechanisms. The third welding fixture is used to place and fix the leg support core mechanism sub-assembly and the left connecting rod welding assembly, as well as other cooperating parts, to complete the combined assembly of the leg support core mechanism assembly and the right connecting rod welding assembly, and to complete the combined assembly of the left / right leg support mounting bracket assembly and the upper cover plate welding assembly lifting connecting rod assembly.

[0012] In one possible design, four sets of the first fixing components are respectively disposed at the four corners of the first mounting plate. The first fixing component includes a first sliding seat slidably mounted on the top of the first mounting plate. A first cylinder is fixedly mounted on the top of the first mounting plate. One end of the piston rod of the first cylinder is fixedly connected to one side of the first sliding seat. Two first pressing mechanisms are fixedly mounted on the top of the first mounting plate. A second pressing mechanism is fixedly mounted on the top of the first sliding seat. The two first pressing mechanisms and one second pressing mechanism cooperate with the first sliding seat to press and fix multiple components to be assembled into a lifting linkage assembly. The two third pressing mechanisms and one fourth pressing mechanism are all located at the center of the first mounting plate. The two third pressing mechanisms correspond to each other and are fixedly mounted on the top of the first mounting plate. The fourth pressing mechanism is located between the two third pressing mechanisms and is fixedly mounted on the top of the first mounting plate. The two third pressing mechanisms and the fourth pressing mechanism are used to press and fix multiple components to be assembled into a motor synchronizing rod assembly.

[0013] In one possible design, the two sets of second fixing components, the two sets of third fixing components, and the two sets of eighth pressing mechanisms are all arranged opposite each other and side by side. The second fixing component includes a second sliding seat slidably mounted on the top of a second mounting plate. A second cylinder is fixedly mounted on the top of the second mounting plate, with one end of the piston rod of the second cylinder fixedly connected to one side of the second sliding seat. A fifth pressing mechanism is fixedly mounted on one side of the second sliding seat, cooperating with the second sliding seat to press and fix the corresponding components. The third fixing component includes a third sliding seat slidably mounted on the top of the second mounting plate. A third cylinder is fixedly mounted on the top of the second mounting plate, with one end of the piston rod of the third cylinder fixedly connected to one side of the third sliding seat. A seventh pressing mechanism is fixedly mounted on the top of the third sliding seat via a bracket. The pressing mechanism is used to press and fix the corresponding parts; two first fixing brackets are fixedly installed on the top of the second mounting plate, and the two eighth pressing mechanisms are fixedly installed on the top of the first fixing brackets to complete the pressing and fixing of the corresponding parts; two sets of ninth pressing mechanisms and one set of tenth pressing mechanisms are located between two sets of second fixing components, two sets of third fixing components and two sets of eighth pressing mechanisms. The two ninth pressing mechanisms are fixedly installed on the top of the second mounting plate, and the tenth pressing mechanism is fixedly installed on the top of the second mounting plate, which is used to press and fix the corresponding parts; two sets of sixth pressing mechanisms are fixedly installed on the top of the second mounting plate, and the two sets of sixth pressing mechanisms are respectively arranged on one side of the second fixing component and the third fixing component, and the two sets of sixth pressing mechanisms are used to complete the pressing and fixing of the corresponding parts.

[0014] In one possible design, the fourth fixing assembly includes a fourth cylinder fixedly mounted to the top of the third mounting plate via a bracket. A first abutment plate is fixedly mounted to one end of the piston rod of the fourth cylinder. A fourth sliding seat and a fifth sliding seat are slidably mounted on the top of the third mounting plate. A fifth cylinder and a seventh cylinder are fixedly mounted on the top of the third mounting plate. One end of the piston rod of the fifth cylinder is fixedly connected to one side of the fourth sliding seat. The piston rod of the seventh cylinder is fixedly connected to one side of the fifth sliding seat. The fourth sliding seat cooperates with the first abutment plate. The fifth sliding seat cooperates with a bracket on one side of the fourth cylinder. A sixth cylinder is fixedly mounted on the top of the third mounting plate. A second abutment plate is fixedly mounted to one end of the piston rod of the sixth cylinder. The second abutment plate cooperates with the first abutment plate for clamping and fixing corresponding components. The fifth fixing assembly includes... The system includes a support base fixedly installed on the top of the third mounting plate. Two eleventh pressing mechanisms are fixedly installed on the top of the third mounting plate via brackets. Both eleventh pressing mechanisms cooperate with the top of the support base to place and press the corresponding components. The sixth fixing assembly includes two second fixing brackets fixedly installed on the top of the third mounting plate. Both second fixing brackets are located on the side of the support base away from the fourth cylinder. A twelfth pressing mechanism is fixedly installed on the top of each of the two second fixing brackets. A thirteenth pressing mechanism is fixedly installed on one side of each of the two second fixing brackets for pressing and fixing the corresponding components. Three sets of fourteenth pressing mechanisms are located on one side of the support base and are fixedly connected to the top of the third mounting plate. These three sets of fourteenth pressing mechanisms cooperate to press and fix the corresponding components.

[0015] In one possible design, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, and fourteenth pressing mechanisms all have the same structure. Each consists of a drive cylinder, a mounting base, a rotating bracket, a rotating head, and a pressing plate. The mounting base is fixedly installed on the top of the drive cylinder. One end of the piston rod of the drive cylinder passes through the mounting base and is fixedly connected to the rotating head. The rotating bracket is rotatably installed on the top of the mounting base. One end of the pressing plate is rotatably connected to the rotating head, and the outer wall of the pressing plate is rotatably connected to the rotating bracket. The drive cylinder can drive the pressing plate to perform lever movement with the rotating bracket as a fulcrum, thereby raising and lowering one end of the pressing plate.

[0016] In one possible design, four support legs are fixedly installed on the bottom of the first mounting plate, the third mounting plate, and the second mounting plate to secure them to the platform to be installed. A photoelectric switch is fixedly installed on one side of the first mounting plate, the third mounting plate, and the second mounting plate to control multiple components to operate.

[0017] In this application, when the first welding fixture is in use, the operator can place the various components required for the four lifting linkage assemblies and one motor synchronizing rod assembly in the corresponding positions on the first mounting plate. The four sets of first fixing components, two sets of third pressing mechanisms and one set of fourth pressing mechanisms work together to clamp and fix the components.

[0018] Once all components are secured, welding can be performed on the four lifting linkage assemblies and one motor synchronizing rod assembly. After welding, the piston rods of each cylinder retract, releasing the clamps on the components, and the operator can remove the welded assemblies from the first welding fixture.

[0019] When using the second welding fixture, the operator can place multiple components that constitute the leg support core mechanism sub-assembly and the left connecting rod welding assembly, as well as other cooperating components, on the second mounting plate; the two sets of second fixing components, two sets of third fixing components, two sets of sixth pressing mechanisms and two sets of eighth pressing mechanisms on the second mounting plate begin to work together;

[0020] Once all components are secured, the assembly and welding of the leg support core mechanism sub-assembly and the left connecting rod welding assembly can be carried out. After welding is completed, the operator can remove the welded assembly from the second welding fixture.

[0021] When using the third welding fixture, the operator can place multiple components that make up the leg support core mechanism assembly and the right connecting rod welding assembly, including the leg support core mechanism sub-assembly, the left connecting rod welding assembly, and other cooperating components, into their respective positions on the third mounting plate; then the fourth fixing component, the fifth fixing component, the sixth fixing component, and the three sets of fourteenth pressing mechanisms cooperate with each other to complete the fixing of the corresponding components.

[0022] Once all components are secured, the assembly and welding of the leg support core mechanism assembly and the right connecting rod welding assembly can be carried out. After welding is completed, the operator can remove the welded assembly from the third welding fixture.

[0023] In this welding fixture, when multiple pressing mechanisms are in operation, their corresponding drive cylinders will push one end of the corresponding pressing plate to lift and lower; the other end of the pressing plate moves synchronously with the rotating bracket as the fulcrum, thereby completing the pressing and releasing of the corresponding parts; this lever motion method enables the pressing mechanism to flexibly and effectively press and release the parts.

[0024] Beneficial effects: In this utility model, the welding fixture optimizes the first, second, and third welding fixtures for different assembly stages and component combinations, realizing the full series of assembly and welding from the lifting link assembly, motor synchronizing rod assembly to the leg support core mechanism assembly and right link welding assembly. This design enables the fixture to quickly adapt to the production needs of different specifications and models of components, greatly shortening the production preparation time and improving the flexibility and response speed of the production line.

[0025] In this utility model, the welding fixture is equipped with multiple sets of pressing mechanisms and sliding seats. The precise placement and firm fixation of parts are achieved by cylinder drive. In particular, the pressing mechanism adopts the lever principle design, which can achieve a large pressing force with a small driving force, ensuring the stable placement of parts during the welding process and effectively avoiding welding defects caused by positioning deviation. At the same time, the coordinated work of multiple pressing mechanisms makes the assembly and welding process of parts more efficient and smooth.

[0026] In this utility model, the welding fixture is designed with full consideration of ease of operation and safety. The setting of support legs and photoelectric switches not only ensures a stable connection between the fixture and the platform to be installed, but also enables convenient operation of the fixture's working status, reducing the risk and labor intensity of manual operation. In addition, the optimized layout and humanized design of the fixture structure make it easier and more comfortable for workers to operate, improving work efficiency and work comfort.

[0027] In this invention, the welding fixture achieves high flexibility and adaptability through the design of multiple fixtures working together, and can quickly adapt to the production needs of different parts; its precise positioning and efficient pressing mechanism, using the lever principle, can ensure the stability of part welding and avoid positioning deviation; at the same time, the fixture focuses on ease of operation and safety, and the design of the support legs and photoelectric switches reduces the risk of manual operation and labor intensity, effectively improving work efficiency and work comfort, and significantly improving welding quality and production efficiency. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of a welding fixture proposed in this utility model;

[0029] Figure 2This is a schematic diagram of the first welding fixture structure proposed in this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the second welding fixture proposed in this utility model;

[0031] Figure 4 This is a schematic diagram of the third welding fixture structure proposed in this utility model;

[0032] Figure 5 This is a schematic diagram of the pressing mechanism of a welding fixture proposed in this utility model.

[0033] In the diagram: 1. Lifting link assembly; 2. Motor synchronizing rod assembly; 3. First welding fixture; 4. Leg support core mechanism sub-assembly; 5. Left side link welding assembly; 6. Second welding fixture; 7. Leg support core mechanism assembly; 8. Right side link welding assembly; 9. Third welding fixture; 10. First mounting plate; 11. First sliding seat; 12. First cylinder; 13. First pressing mechanism; 14. Second pressing mechanism; 15. Third pressing mechanism; 16. Fourth pressing mechanism; 17. Second mounting plate; 18. Second sliding seat; 19. Second cylinder; 20. Fifth pressing mechanism; 21. Sixth pressing mechanism; 22. Third sliding seat; 23. Third cylinder; 24. Seventh pressing mechanism; 25. First fixed frame; 26. Eighth pressing mechanism; 27. Ninth pressing mechanism; 28. Tenth pressing mechanism; 29. ​​Third mounting plate; 30. Fourth cylinder; 31. First abutment plate; 32. Fourth sliding seat; 33. Fifth cylinder; 34. Sixth cylinder; 35. Second abutment plate; 36. Fifth sliding seat; 37. Seventh cylinder; 38. Support seat; 39. Eleventh pressing mechanism; 40. Second fixed frame; 41. Twelfth pressing mechanism; 42. Thirteenth pressing mechanism; 43. Fourteenth pressing mechanism; 44. Drive cylinder; 45. Mounting seat; 46. Rotating bracket; 47. Rotating head; 48. Pressing plate. Detailed Implementation

[0034] 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.

[0035] Example 1: Refer to Figure 1-5 A welding fixture, comprising: a first welding fixture 3, a second welding fixture 6, and a third welding fixture 9.

[0036] In this embodiment, the first welding fixture 3 includes a first mounting plate 10, four sets of first fixing components, two sets of third pressing mechanisms 15 and one set of fourth pressing mechanisms 16.

[0037] Furthermore, in this embodiment, four sets of first fixing components are respectively disposed at the four corners of the first mounting plate 10. Each first fixing component includes a first sliding seat 11 slidably mounted on the top of the first mounting plate 10. A first cylinder 12 is fixedly mounted on the top of the first mounting plate 10, and one end of the piston rod of the first cylinder 12 is fixedly connected to one side of the first sliding seat 11. Two first pressing mechanisms 13 are fixedly mounted on the top of the first mounting plate 10, and a second pressing mechanism 14 is fixedly mounted on the top of the first sliding seat 11. Both first pressing mechanisms 13 and one second pressing mechanism 14 cooperate with the first sliding seat 11 to press and fix multiple components to be assembled into the lifting linkage assembly 1. In specific operation, the first cylinder 12 drives the first sliding seat 11 to slide, causing the second pressing mechanism 14 on the first sliding seat 11 to cooperate with the two first pressing mechanisms 13 on the first mounting plate 10 to press and fix the components of the lifting linkage assembly 1.

[0038] Furthermore, in this embodiment, the two third pressing mechanisms 15 and the fourth pressing mechanism 16 are all located at the center of the first mounting plate 10. The two third pressing mechanisms 15 correspond to each other and are fixedly installed on the top of the first mounting plate 10. The fourth pressing mechanism 16 is located between the two third pressing mechanisms 15 and is fixedly installed on the top of the first mounting plate 10. The two third pressing mechanisms 15 and the fourth pressing mechanism 16 are used to press and fix multiple components to be assembled into the motor synchronizing rod assembly 2.

[0039] In this embodiment, the second welding fixture 6 includes a second mounting plate 17, two sets of second fixing components, two sets of third fixing components, two sets of sixth pressing mechanisms 21, two sets of eighth pressing mechanisms 26, two sets of ninth pressing mechanisms 27, and one set of tenth pressing mechanisms 28. The two sets of second fixing components, the two sets of third fixing components, and the two sets of eighth pressing mechanisms 26 are all arranged opposite each other and side by side.

[0040] Furthermore, in this embodiment, the second fixing component includes a second sliding seat 18 slidably mounted on the top of the second mounting plate 17, a second cylinder 19 fixedly mounted on the top of the second mounting plate 17, one end of the piston rod of the second cylinder 19 being fixedly connected to one side of the second sliding seat 18, and a fifth pressing mechanism 20 fixedly mounted on one side of the second sliding seat 18. The fifth pressing mechanism 20 cooperates with the second sliding seat 18 to complete the pressing and fixing of the corresponding components.

[0041] Furthermore, in this embodiment, the third fixing component includes a third sliding seat 22 slidably disposed on the top of the second mounting plate 17, a third cylinder 23 fixedly mounted on the top of the second mounting plate 17, one end of the piston rod of the third cylinder 23 being fixedly connected to one side of the third sliding seat 22, and a seventh pressing mechanism 24 fixedly mounted on the top of the third sliding seat 22 via a bracket for pressing and fixing the corresponding components.

[0042] Furthermore, in this embodiment, two first fixing brackets 25 are fixedly installed on the top of the second mounting plate 17, and two eighth pressing mechanisms 26 are fixedly installed on the top of the first fixing brackets 25 to complete the pressing and fixing of the corresponding components.

[0043] Furthermore, in this embodiment, the two sets of ninth pressing mechanisms 27 and the set of tenth pressing mechanisms 28 are located between the two sets of second fixing components, the two sets of third fixing components and the two sets of eighth pressing mechanisms 26. The two ninth pressing mechanisms 27 are fixedly installed on the top of the second mounting plate 17, and the tenth pressing mechanism 28 is fixedly installed on the top of the second mounting plate 17. It is used to press and fix the corresponding parts.

[0044] Furthermore, in this embodiment, both sets of sixth pressing mechanisms 21 are fixedly installed on the top of the second mounting plate 17. The two sets of sixth pressing mechanisms 21 are respectively disposed on one side of the second fixing component and the third fixing component. The two sets of sixth pressing mechanisms 21 are used to complete the pressing and fixing of the corresponding components.

[0045] In this embodiment, the third welding fixture 9 includes a third mounting plate 29, a fourth fixing component, a fifth fixing component, a sixth fixing component, and three sets of fourteenth pressing mechanisms 43.

[0046] Further, in this embodiment, the fourth fixing component includes a fourth cylinder 30 fixedly mounted on the top of the third mounting plate 29 via a bracket. A first abutment plate 31 is fixedly mounted on one end of the piston rod of the fourth cylinder 30. A fourth sliding seat 32 and a fifth sliding seat 36 are slidably mounted on the top of the third mounting plate 29. A fifth cylinder 33 and a seventh cylinder 37 are fixedly mounted on the top of the third mounting plate 29. One end of the piston rod of the fifth cylinder 33 is fixedly connected to one side of the fourth sliding seat 32. The piston rod of the seventh cylinder 37 is fixedly connected to one side of the fifth sliding seat 36. The fourth sliding seat 32 cooperates with the first abutment plate 31. The fifth sliding seat 36 cooperates with the bracket on one side of the fourth cylinder 30. A sixth cylinder 34 is fixedly mounted on the top of the third mounting plate 29. A second abutment plate 35 is fixedly mounted on one end of the piston rod of the sixth cylinder 34. The second abutment plate 35 cooperates with the first abutment plate 31 for clamping and fixing the corresponding components.

[0047] Furthermore, in this embodiment, the fifth fixing component includes a support base 38 fixedly installed on the top of the third mounting plate 29. Two eleventh pressing mechanisms 39 are fixedly installed on the top of the third mounting plate 29 by means of a bracket. Both eleventh pressing mechanisms 39 cooperate with the top of the support base 38 to complete the placement and pressing fixing of the corresponding components.

[0048] Furthermore, in this embodiment, the sixth fixing component includes two second fixing brackets 40 fixedly installed on the top of the third mounting plate 29. Both second fixing brackets 40 are located on the side of the support base 38 away from the fourth cylinder 30. A twelfth pressing mechanism 41 is fixedly installed on the top of each of the two second fixing brackets 40, and a thirteenth pressing mechanism 42 is fixedly installed on one side of each of the two second fixing brackets 40, which are used to press and fix the corresponding components.

[0049] Furthermore, in this embodiment, all three sets of fourteenth pressing mechanisms 43 are located on one side of the support base 38, and all three sets of fourteenth pressing mechanisms 43 are fixedly connected to the top of the third mounting plate 29. The three sets of fourteenth pressing mechanisms 43 cooperate to complete the pressing and fixing of the corresponding components.

[0050] This application can be used in the field of seat manufacturing technology, or in other fields applicable to this application.

[0051] Example 2: Reference Figure 2 , 3 4, 5, Improvements based on Example 1: A welding fixture applied to the field of seat manufacturing technology;

[0052] In this embodiment, the first pressing mechanism 13, the second pressing mechanism 14, the third pressing mechanism 15, the fourth pressing mechanism 16, the fifth pressing mechanism 20, the sixth pressing mechanism 21, the seventh pressing mechanism 24, the eighth pressing mechanism 26, the ninth pressing mechanism 27, the tenth pressing mechanism 28, the eleventh pressing mechanism 39, the twelfth pressing mechanism 41, the thirteenth pressing mechanism 42, and the fourteenth pressing mechanism 43 all have the same structure. They are all composed of a drive cylinder 44, a mounting base 45, a rotating bracket 46, a rotating head 47, and a pressing plate 48.

[0053] Furthermore, in this embodiment, the mounting base 45 is fixedly mounted on the top of the drive cylinder 44, one end of the piston rod of the drive cylinder 44 passes through the mounting base 45 and is fixedly connected to the rotating head 47, the rotating bracket 46 is rotatably mounted on the top of the mounting base 45, one end of the pressing plate 48 is rotatably connected to the rotating head 47, and the outer wall of the pressing plate 48 is rotatably connected to the rotating bracket 46. The drive cylinder 44 can drive the pressing plate 48 to perform lever movement with the rotating bracket 46 as the fulcrum, so as to realize the lifting and lowering of one end of the pressing plate 48.

[0054] In this embodiment, four support legs are fixedly installed on the bottom of the first mounting plate 10, the second mounting plate 17 and the third mounting plate 29 to fix the corresponding tooling on the platform to be installed; a photoelectric switch is fixedly installed on one side of the first mounting plate 10, the second mounting plate 17 and the third mounting plate 29 to control multiple components to work.

[0055] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive cylinder 44 and other cylinders are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0056] The working principle and usage process of this technical solution are as follows: When the first welding fixture 3 is in use, the operator can place the various parts required by the four lifting rod assemblies 1 and the motor synchronous rod assembly 2 in the corresponding positions of the first mounting plate 10. The four sets of first fixing components, the two sets of third pressing mechanisms 15 and the one set of fourth pressing mechanisms 16 work together to clamp and fix the parts.

[0057] Specifically, the four sets of first fixing components on the first mounting plate 10 start to work. The first cylinder 12 in each set of first fixing components drives the piston rod to extend and push the first sliding seat 11 to slide on the top of the first mounting plate 10. At the same time, the two first pressing mechanisms 13 fixedly installed on the top of the first mounting plate 10 cooperate with the second pressing mechanism 14 on the top of the first sliding seat 11. When the first sliding seat 11 moves into place, these pressing mechanisms work together to apply pressure to the component and press it to fix it.

[0058] For the components of the motor synchronizing rod assembly 2, two third pressing mechanisms 15 and one fourth pressing mechanism 16 located at the center of the first mounting plate 10 can press and fix the components of the motor synchronizing rod assembly 2, which can ensure its stable placement during the welding process.

[0059] Once all components are secured, welding can be performed on the four lifting linkage assemblies 1 and one motor synchronizing rod assembly 2. After welding is completed, the piston rods of each cylinder retract, releasing the clamps on the components. The operator can then remove the welded assemblies from the first welding fixture 3.

[0060] When using the second welding fixture 6, the operator can place multiple components constituting the leg support core mechanism sub-assembly 4 and the left connecting rod welding assembly 5, as well as other cooperating components, on the second mounting plate 17; the two sets of second fixing components, the two sets of third fixing components, the two sets of sixth pressing mechanisms 21 and the two sets of eighth pressing mechanisms 26 on the second mounting plate 17 begin to work together.

[0061] Specifically, in the second fixing assembly, the second cylinder 19 drives the piston rod to extend, pushing the second sliding seat 18 to slide on the top of the second mounting plate 17. The fifth pressing mechanism 20, fixedly installed on one side of the second sliding seat 18, moves accordingly to press and fix the corresponding parts. In the third fixing assembly, the third cylinder 23 drives the piston rod to extend, pushing the third sliding seat 22 to slide on the top of the second mounting plate 17. The seventh pressing mechanism 24, fixedly installed on the top of the third sliding seat 22 via a bracket, presses and fixes the corresponding parts. At the same time, the two eighth pressing mechanisms 26 on the two first fixing brackets 25 fixedly installed on the top of the second mounting plate 17 cooperate with the second and third fixing assemblies to further press and fix the corresponding parts. Two sets of ninth pressing mechanisms 27 and one set of tenth pressing mechanisms 28 are located between the above-mentioned assemblies, and they also press and fix the corresponding parts. Two sets of sixth pressing mechanisms 21 are respectively arranged on one side of the second and third fixing assemblies to complete the pressing and fixing of the corresponding parts.

[0062] Once all components are secured, the assembly and welding of the leg support core mechanism sub-assembly 4 and the left connecting rod welding assembly 5 can be performed. After welding, the operator can remove the welded assembly from the second welding fixture 6.

[0063] When using the third welding fixture 9, the operator can place multiple components constituting the leg support core mechanism assembly 7 and the right connecting rod welding assembly 8, including the leg support core mechanism sub-assembly 4, the left connecting rod welding assembly 5, and other cooperating components, into their respective positions on the third mounting plate 29; then the fourth fixing component, the fifth fixing component, the sixth fixing component, and the three sets of fourteenth pressing mechanisms 43 cooperate with each other to complete the fixing of the corresponding components;

[0064] Specifically, in the fourth fixing assembly, the fourth cylinder 30 drives the piston rod to extend, pushing the first abutment plate 31 to move. At the same time, the fifth cylinder 33 drives the fourth sliding seat 32 to slide on the top of the third mounting plate 29. The fourth sliding seat 32 cooperates with the first abutment plate 31 to clamp and fix the parts. Similarly, the fifth sliding seat 36 can also move to fix the corresponding parts. The sixth cylinder 34 can drive the second abutment plate 35 to move, which further cooperates with the first abutment plate 31 to enhance the clamping effect.

[0065] Meanwhile, the two eleventh pressing mechanisms 39 fixedly mounted on the top of the third mounting plate 29 via brackets cooperate with the top of the support base 38, and can place and press the corresponding parts in place; the twelfth pressing mechanism 41 and the thirteenth pressing mechanism 42 on the two second fixing frames 40 in the sixth fixing assembly press the corresponding parts in place; the three sets of fourteenth pressing mechanisms 43 are located on one side of the support base 38, and they cooperate with each other to press the corresponding parts in place.

[0066] Once all components are secured, the assembly and welding of the leg support core mechanism assembly 7 and the right connecting rod welding assembly 8 can be performed. After welding, the operator can remove the welded assembly from the third welding fixture 9.

[0067] In this welding fixture, when multiple pressing mechanisms are in operation, their corresponding drive cylinders 44 push one end of the corresponding pressing plate 48 to lift and lower; the other end of the pressing plate 48 moves synchronously with the rotating bracket 46 as the fulcrum, thereby completing the pressing and releasing of the corresponding parts; specifically, when the piston rod of the drive cylinder 44 extends, it pushes one end of the pressing plate 48 to lift. At this time, the other end of the pressing plate 48 falls with the rotating bracket 46 as the fulcrum, applying pressure to the parts; when the piston rod of the drive cylinder 44 retracts, one end of the pressing plate 48 falls and the other end lifts, which can release the pressure on the parts; this lever motion method enables the pressing mechanism to flexibly and effectively press and release the parts.

[0068] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0069] 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 fixture, characterized in that, include: The first welding fixture (3) includes a first mounting plate (10), four sets of first fixing components, two sets of third pressing mechanisms (15) and one set of fourth pressing mechanisms (16). The first welding fixture (3) is used to place and fix multiple parts to complete the combined assembly of four lifting linkage assemblies (1) and one motor synchronizing rod assembly (2). It also includes a second welding fixture (6), which includes a second mounting plate (17), two sets of second fixing components, two sets of third fixing components, two sets of sixth pressing mechanisms (21), two sets of eighth pressing mechanisms (26), two sets of ninth pressing mechanisms (27) and a set of tenth pressing mechanisms (28). The second welding fixture (6) is used to place and fix four lifting linkage assemblies (1) and a motor synchronizing rod assembly (2) and other cooperating parts to complete the combined assembly of the leg support core mechanism sub-assembly (4) and the left linkage welding assembly (5). It also includes a third welding fixture (9), which includes a third mounting plate (29), a fourth fixing component, a fifth fixing component, a sixth fixing component and three sets of fourteenth pressing mechanisms (43). The third welding fixture (9) is used to place and fix the leg support core mechanism sub-assembly (4) and the left connecting rod welding assembly (5) and other cooperating parts to complete the combined assembly of the leg support core mechanism assembly (7) and the right connecting rod welding assembly (8) to complete the combined assembly of the left / right leg support mounting bracket assembly and the upper cover plate welding assembly lifting connecting rod assembly (1).

2. The welding fixture according to claim 1, characterized in that, The four sets of the first fixing components are respectively disposed at the four corners of the first mounting plate (10). The first fixing component includes a first sliding seat (11) slidably mounted on the top of the first mounting plate (10). A first cylinder (12) is fixedly mounted on the top of the first mounting plate (10). One end of the piston rod of the first cylinder (12) is fixedly connected to one side of the first sliding seat (11). Two first pressing mechanisms (13) are fixedly mounted on the top of the first mounting plate (10). A second pressing mechanism (14) is fixedly mounted on the top of the first sliding seat (11). The two first pressing mechanisms (13) and one second pressing mechanism (14) are all in cooperation with the first sliding seat (11). Multiple components to be assembled into a lifting linkage assembly (1) are pressed and fixed; two third pressing mechanisms (15) and one fourth pressing mechanism (16) are located at the center of the first mounting plate (10), the two third pressing mechanisms (15) correspond to each other, and the two third pressing mechanisms (15) are fixedly installed on the top of the first mounting plate (10), the fourth pressing mechanism (16) is located between the two third pressing mechanisms (15), and it is fixedly installed on the top of the first mounting plate (10). The two third pressing mechanisms (15) and one fourth pressing mechanism (16) are used to press and fix multiple components to be assembled into a motor synchronizing rod assembly (2).

3. The welding fixture according to claim 2, characterized in that, Two sets of second fixing components, two sets of third fixing components, and two sets of eighth pressing mechanisms (26) are all arranged opposite to each other and side by side. The second fixing component includes a second sliding seat (18) slidably mounted on the top of the second mounting plate (17). A second cylinder (19) is fixedly mounted on the top of the second mounting plate (17). One end of the piston rod of the second cylinder (19) is fixedly connected to one side of the second sliding seat (18). A fifth pressing mechanism (20) is fixedly mounted on one side of the second sliding seat (18). The fifth pressing mechanism (20) cooperates with the second sliding seat (18) to complete the pressing and fixing of the corresponding parts. The third fixing component includes a third sliding seat (22) slidably mounted on the top of the second mounting plate (17). A third cylinder (23) is fixedly mounted on the top of the second mounting plate (17). One end of the piston rod of the third cylinder (23) is fixedly connected to one side of the third sliding seat (22). A seventh pressing mechanism is fixedly mounted on the top of the third sliding seat (22) through a bracket. The pressing mechanism (24) is used to press and fix the corresponding parts; two first fixing brackets (25) are fixedly installed on the top of the second mounting plate (17), and the two eighth pressing mechanisms (26) are fixedly installed on the top of the first fixing brackets (25) to complete the pressing and fixing of the corresponding parts; two sets of ninth pressing mechanisms (27) and one set of tenth pressing mechanisms (28) are located between two sets of second fixing components, two sets of third fixing components and two sets of eighth pressing mechanisms (26), the two ninth pressing mechanisms (27) are fixedly installed on the top of the second mounting plate (17), and the tenth pressing mechanism (28) is fixedly installed on the top of the second mounting plate (17) to press and fix the corresponding parts; two sets of sixth pressing mechanisms (21) are fixedly installed on the top of the second mounting plate (17), and the two sets of sixth pressing mechanisms (21) are respectively set on one side of the second fixing component and the third fixing component, and the two sets of sixth pressing mechanisms (21) are used to complete the pressing and fixing of the corresponding parts.

4. The welding fixture according to claim 3, characterized in that, The fourth fixing component includes a fourth cylinder (30) fixedly mounted on the top of the third mounting plate (29) via a bracket. A first abutment plate (31) is fixedly mounted on one end of the piston rod of the fourth cylinder (30). A fourth sliding seat (32) and a fifth sliding seat (36) are slidably mounted on the top of the third mounting plate (29). A fifth cylinder (33) and a seventh cylinder (37) are fixedly mounted on the top of the third mounting plate (29). One end of the piston rod of the fifth cylinder (33) is fixedly connected to one side of the fourth sliding seat (32). The seventh cylinder... The piston rod of cylinder (37) is fixedly connected to one side of the fifth sliding seat (36). The fourth sliding seat (32) cooperates with the first abutment plate (31). The fifth sliding seat (36) cooperates with the bracket on one side of the fourth cylinder (30). The top of the third mounting plate (29) is fixedly mounted with the sixth cylinder (34). One end of the piston rod of the sixth cylinder (34) is fixedly mounted with the second abutment plate (35). The second abutment plate (35) cooperates with the first abutment plate (31) to clamp and fix the corresponding parts. The fifth fixed... The assembly includes a support base (38) fixedly mounted on the top of the third mounting plate (29). Two eleventh pressing mechanisms (39) are fixedly mounted on the top of the third mounting plate (29) via brackets. Both eleventh pressing mechanisms (39) cooperate with the top of the support base (38) to place and press the corresponding components. The sixth fixing assembly includes two second fixing brackets (40) fixedly mounted on the top of the third mounting plate (29). Both second fixing brackets (40) are positioned on the support base (38) away from the fourth cylinder (3). On one side of the second fixing bracket (40), a twelfth pressing mechanism (41) is fixedly installed on the top of each of the two second fixing brackets (40), and a thirteenth pressing mechanism (42) is fixedly installed on one side of each of the two second fixing brackets (40), which is used to press and fix the corresponding parts. The three sets of fourteenth pressing mechanisms (43) are all located on one side of the support base (38), and the three sets of fourteenth pressing mechanisms (43) are fixedly connected to the top of the third mounting plate (29). The three sets of fourteenth pressing mechanisms (43) cooperate to complete the pressing and fixing of the corresponding parts.

5. A welding fixture according to any one of claims 2-4, characterized in that, The first pressing mechanism (13), the second pressing mechanism (14), the third pressing mechanism (15), the fourth pressing mechanism (16), the fifth pressing mechanism (20), the sixth pressing mechanism (21), the seventh pressing mechanism (24), the eighth pressing mechanism (26), the ninth pressing mechanism (27), the tenth pressing mechanism (28), the eleventh pressing mechanism (39), the twelfth pressing mechanism (41), the thirteenth pressing mechanism (42), and the fourteenth pressing mechanism (43) all have the same structure. They all consist of a drive cylinder (44), a mounting base (45), a rotating bracket (46), a rotating head (47), and a pressing plate (48). Composed of 48), the mounting base (45) is fixedly installed on the top of the drive cylinder (44), one end of the piston rod of the drive cylinder (44) passes through the mounting base (45) and is fixedly connected to the rotating head (47), the rotating bracket (46) is rotatably installed on the top of the mounting base (45), one end of the pressing plate (48) is rotatably connected to the rotating head (47), the outer wall of the pressing plate (48) is rotatably connected to the rotating bracket (46), and the drive cylinder (44) can drive the pressing plate (48) to perform lever movement with the rotating bracket (46) as the fulcrum, so as to realize the lifting and lowering of one end of the pressing plate (48).

6. The welding fixture according to claim 1, characterized in that, The bottom of the first mounting plate (10), the third mounting plate (29), and the second mounting plate (17) are all fixedly equipped with four support legs to fix them to the platform to be installed. Photoelectric switches are fixedly installed on one side of the first mounting plate (10), the third mounting plate (29), and the second mounting plate (17) to control multiple components to work.

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