A welding fixture for leg supports

Abstract

This utility model belongs to the field of welding fixtures, specifically a leg support welding fixture. Addressing the shortcomings of existing fixtures that rely heavily on manual operation, resulting in low efficiency, difficulty in guaranteeing welding accuracy, and susceptibility to welding deformation and uneven welds, this invention proposes the following solution: A leg support frame sub-assembly welding fixture is used to position the leg support frame sub-assemblies and the support bracket assembly; a leg support frame assembly welding fixture is used to position the leg support frame assembly. Both the leg support frame sub-assembly welding fixture and the leg support frame assembly welding fixture consist of a mounting platform and multiple clamps mounted on top of the mounting platform. The modular design facilitates the installation, debugging, and maintenance of the fixtures, reducing operating costs and improving equipment reliability and service life. Furthermore, the components on each welding platform are customized according to the characteristics of the parts, ensuring welding accuracy and efficiency.

Description

Technical Field

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

[0002] With the booming development of the automotive industry, car seats, as a key component for improving riding comfort, are constantly being innovated in design and manufacturing technology. As an important part of the seat, the leg rest is not only related to the comfort of riding, but also directly affects the overall support performance of the seat.

[0003] In the manufacturing process of leg rests, welding is a crucial step, as its quality directly determines the structural strength and stability of the leg rest. However, traditional leg rest welding methods rely heavily on manual operation, which is not only inefficient but also makes it difficult to guarantee welding precision. This can easily lead to problems such as welding deformation and uneven welds, which seriously affect the quality of the leg rest and the riding experience.

[0004] To address the aforementioned issues, improve the precision and efficiency of leg rest welding, and reduce the impact of human factors on welding quality, a dedicated leg rest welding fixture is to be developed. This fixture should be able to achieve precise positioning and stable clamping of each component of the leg rest, ensuring stability and consistency during the welding process, thereby improving welding quality and meeting the high standards of the automotive industry for seat safety and comfort. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of existing technologies that rely heavily on manual operation, which is not only inefficient but also makes it difficult to guarantee welding accuracy, and is prone to welding deformation and uneven welds. Therefore, a leg support welding fixture is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leg support welding fixture, used in seat leg support welding, includes a leg support frame sub-assembly welding fixture for positioning the leg support frame sub-assembly and the support bracket assembly.

[0008] The leg support frame assembly welding fixture is used to position the leg support frame assembly. Both the leg support frame assembly welding fixture and the leg support frame assembly welding fixture are composed of a mounting platform and multiple clamps set on the top of the mounting platform. The clamps include clamp number one and clamp number two.

[0009] The first fixture includes a first main fixture and a first secondary fixture. The first main fixture includes a first cylinder, a first rotating frame, a rotating plate, and a clamping bar. One end of the rotating plate is rotatably mounted on the end of the telescopic shaft of the first cylinder. One end of the first rotating frame is rotatably mounted on the top of the first cylinder. The other end of the first rotating frame is rotatably mounted with the rotating plate. One end of the clamping bar is fixedly mounted with one end of the rotating plate. The first secondary fixture includes a first positioning shaft and a first mounting plate. The first mounting plate is fixedly mounted on the top of the first positioning shaft. The clamping bar cooperates with the first mounting plate. The first positioning shaft and the first cylinder are both fixedly mounted on the mounting platform by bolts.

[0010] The second clamp includes a second cylinder, a slide plate, a vertical plate, a second positioning shaft, a second rotating frame, and a connecting bar. The end of the telescopic shaft of the second cylinder is fixedly mounted on one side of the slide plate. The vertical plate is fixedly mounted on the top of the slide plate. One end of the second positioning shaft is fixedly mounted on one side of the vertical plate. One end of the connecting bar is rotatably mounted on one side of the second cylinder. One end of the second rotating frame is rotatably mounted on the top of the slide plate. The other end of the second rotating frame is rotatably mounted with the connecting bar. The second cylinder is fixedly mounted on the mounting platform by bolts. The slide plate is slidably mounted on the mounting platform by a slide rail.

[0011] In one possible design, two of the first clamps are used to position one end of each of the two side connecting brackets, one of the first clamps is used to position the center of the main fixing bracket, and both of the first clamps are used to position the connection between the side connecting brackets and the main fixing bracket.

[0012] In one possible design, two of the second clamps are used to position the ends of the right leg support link assembly and the left leg support link assembly, respectively, one of the second clamps is used to position the motor drive bracket, and the two second clamps are used to position the beginning ends of the right leg support link assembly and the left leg support link assembly, respectively.

[0013] In one possible design, the welding fixture for the leg support frame sub-assembly further includes three positioning frames fixed to the mounting plate by bolts. The three positioning frames are used to position the leg support support tube, the upper leg support tube, and the lower leg support tube, respectively.

[0014] In one possible design, two of the first clamps are used to position one end of the right leg support link assembly and the left leg support link assembly of the leg support frame sub-assembly, respectively; two of the second clamps are used to position the other end of the right leg support link assembly and the left leg support link assembly of the leg support frame sub-assembly, respectively; two of the first clamps are used to position both sides of the motor mounting bracket, respectively; two of the first clamps are used to position both ends of one side of the motor mounting bracket, respectively; two of the first clamps are used to position the right side fixing bracket and the left side fixing bracket of the plastic part, respectively; and two of the second clamps are used to position the waist-shaped wire harness bracket and the motor fixing bracket, respectively.

[0015] In one possible design, the welding fixture for the leg support frame assembly further includes two positioning plates fixed to the top of the mounting plate by bolts, the two positioning plates being used to position the two transverse connecting brackets respectively.

[0016] In one possible design, both the leg support frame sub-assembly welding fixture and the leg support frame assembly welding fixture are bolted to the same base platform, and both the leg support frame sub-assembly welding fixture and the leg support frame assembly welding fixture include a control switch for controlling the cylinder.

[0017] In this utility model, the leg support welding fixture, through the precisely designed clamps and positioning frame, can achieve precise positioning of each component of the leg support, ensuring stability and consistency in the welding process, thereby significantly improving the welding quality;

[0018] In this utility model, the leg support welding fixture, through precise positioning, can effectively reduce the occurrence of welding defects such as uneven welds and insufficient welding strength, thereby improving the service life of the leg support and the riding experience.

[0019] This utility model adopts a modular design, which facilitates the installation, debugging and maintenance of tooling, reduces the cost of use, improves the reliability and service life of the equipment, and the components on each welding table are customized according to the characteristics of the parts to ensure welding accuracy and efficiency. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of a leg support welding fixture proposed in this utility model;

[0021] Figure 2 This is an exploded structural diagram of the No. 1 clamp of the leg support welding fixture proposed in this utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the No. 2 clamp of the leg support welding fixture proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the welding fixture for the leg support frame sub-assembly proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the welding fixture for the leg support frame sub-assembly proposed in this utility model.

[0025] Figure 6 This is a schematic diagram of the welding fixture structure for the leg support frame assembly of the leg support welding fixture proposed in this utility model.

[0026] In the diagram: 1. Base platform; 2. Leg support frame sub-assembly welding fixture; 3. Leg support frame sub-assembly component; 4. Support bracket assembly; 5. Leg support frame assembly welding fixture; 6. Leg support frame assembly component; 7. Upper leg support horizontal tube; 8. Lower leg support horizontal tube; 9. Leg support support tube; 10. Side connecting bracket; 11. Right leg support connecting rod assembly; 12. Left leg support connecting rod assembly; 13. Motor drive bracket; 14. Main fixing bracket; 15. Connecting strip; 16. Waist-shaped wire harness bracket; 17. Left side fixing bracket for plastic parts; 18. Motor fixing bracket; 19. Motor mounting bracket; 20. Horizontal connecting bracket; 21. Right side fixing bracket for plastic parts; 22. Cylinder No. 1; 23. Rotating frame No. 1; 24. Rotating plate; 25. Clamping bar; 26. Mounting plate No. 1; 27. Positioning shaft No. 1; 28. Cylinder No. 2; 29. ​​Slide plate; 30. Vertical plate; 31. Positioning shaft No. 2; 32. Rotating frame No. 2. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] Reference Figure 1 A type of tooling mainly includes a leg support frame sub-assembly welding tooling 2 and a leg support frame assembly welding tooling 5. Both consist of a mounting platform and multiple clamps mounted on top of the mounting platform. They share a base platform 1 but are independently equipped with control switches. The specific structure and distribution of the clamps are as follows:

[0030] Reference Figure 2 Fixture No. 1

[0031] The main clamp is driven by cylinder 22. Through the hinge structure between rotating frame 23 and rotating plate 24, clamping bar 25 is rotated and clamped at an angle. When the cylinder retracts inward, one end of clamping bar 25 will lift up; otherwise, it will return to its original position. In conjunction with the auxiliary clamp, positioning shaft 27 and mounting plate 26, the component is first placed on mounting plate 26 and fitted onto positioning shaft 27 through its own positioning hole. Then, the cylinder is extended, pressing and fixing the other end of clamping bar 25 onto the component, thus completing the positioning and installation.

[0032] Reference Figure 3 No. 2 clamp

[0033] Driven by cylinder 28, slide plate 29 moves along slide rail. The top plate 30 and positioning shaft 31 will be displaced so that they are inserted into the positioning hole of the component to achieve positioning installation. The connecting bar 15 rotatably set on the surface of cylinder 28 and the rotating frame 32 rotatably set on the top of slide plate 29 are also rotatably set to each other, so that when slide plate 29 moves laterally, the two can form a deformable support to ensure the stability of slide plate 29 when it moves and limit its movement distance.

[0034] This application can be used in the field of welding tooling, or in other fields applicable to this application.

[0035] Example 2

[0036] refer to Figure 1 An improvement based on Embodiment 1: a leg support welding fixture, which is applied to the field of welding fixtures, wherein the leg support frame sub-assembly welding fixture 2 is used to position the leg support frame sub-assembly 3 and the support bracket assembly 4.

[0037] The leg support frame sub-assembly 3 includes a right leg support connecting rod assembly 11 and a left leg support connecting rod assembly 12 located on both sides, an upper leg support tube 7, a lower leg support tube 8, and a leg support support tube 9 disposed between the two, and a motor drive bracket 13 sleeved on the outer wall of the upper leg support tube 7.

[0038] The support bracket assembly 4 includes a main fixed bracket and two side connecting brackets 10 respectively disposed at its two ends.

[0039] Reference Figure 4 Specifically, the positioning and installation of the support bracket assembly 4 involves two clamps (number one) for positioning one end of each of the two side connecting brackets 10, one clamp for positioning the center of the main fixed bracket 14, and the other two clamps for positioning the connection between the side connecting brackets 10 and the main fixed bracket 14. This achieves the positioning and installation of the support bracket assembly 4.

[0040] Reference Figure 5 The positioning and installation of the leg support frame sub-assembly 3 involves two No. 2 clamps used to position the ends of the right leg support connecting rod assembly 11 and the left leg support connecting rod assembly 12, respectively. One No. 2 clamp is used to position the motor drive bracket 13, and the other two No. 2 clamps are used to position the beginning ends of the right leg support connecting rod assembly 11 and the left leg support connecting rod assembly 12, respectively. The leg support support tube 9, the upper leg support horizontal tube 7, and the lower leg support horizontal tube 8 are positioned by three positioning brackets bolted to the top of the mounting platform. This achieves the positioning and installation of the leg support frame sub-assembly 3.

[0041] Reference Figure 6 The welding fixture 5 for the leg support frame assembly is used to position the leg support frame assembly 6.

[0042] The leg support frame assembly 6 is composed of the assembled leg support frame sub-assembly 3, a waist-shaped wire harness bracket 16 and a motor fixing bracket 18 respectively set at one end of the two leg support connecting rod assemblies, a plastic left fixing bracket 17 and a plastic right fixing bracket 21 respectively set on one side of the two leg support connecting rod assemblies, a motor mounting bracket 19 set at one end of the two leg support connecting rod assemblies, and two horizontal connecting brackets 20 both set inside the motor mounting bracket 19.

[0043] Positioning and installation of leg support frame assembly 6: Two No. 1 clamps are used to position one end of the right leg support connecting rod assembly 11 and the left leg support connecting rod assembly 12 of the leg support frame sub-assembly 3, respectively. Two No. 2 clamps are used to position the other ends of the right leg support connecting rod assembly 11 and the left leg support connecting rod assembly 12 of the leg support frame sub-assembly 3, respectively. Two No. 1 clamps are also used to position both sides of the motor mounting bracket 19, and both ends on one side of the motor mounting bracket 19. Additionally, two No. 1 clamps are used to position the right side fixing bracket 21 and the left side fixing bracket 17 of the plastic part, respectively. Two No. 2 clamps are used to position the waist-shaped wire harness bracket 16 and the motor fixing bracket 18, respectively. The two horizontal connecting brackets 20 are positioned by bolts fixed to two positioning plates on the top of the mounting platform. This achieves the positioning and installation of the leg support frame assembly 6.

[0044] Both the leg support frame assembly welding fixture 2 and the leg support frame assembly welding fixture 5 include control switches for controlling the cylinders, allowing operators to flexibly control the extension and retraction of the cylinders according to actual needs, thereby achieving precise clamping and release of the leg support components.

[0045] However, as is well known to those skilled in the art, the working principle and wiring method of cylinders are commonplace and are all conventional methods or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0046] 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.

[0047] 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 leg rest welding fixture used in a seat leg rest welding for positioning a leg rest, characterized by, include: The leg support frame sub-assembly welding fixture (2) is used to position the leg support frame sub-assembly (3) and the support bracket assembly (4); The leg support frame assembly welding fixture (5) is used to position the leg support frame assembly (6). Both the leg support frame assembly welding fixture (2) and the leg support frame assembly welding fixture (5) are composed of a mounting platform and multiple clamps set on the top of the mounting platform. The clamps include clamp number one and clamp number two. The first clamp includes a first main clamp and a first secondary clamp. The first main clamp includes a first cylinder (22), a first rotating frame (23), a rotating plate (24), and a clamping bar (25). One end of the rotating plate (24) is rotatably mounted at the end of the telescopic shaft of the first cylinder (22). One end of the first rotating frame (23) is rotatably mounted at the top of the first cylinder (22). The other end of the first rotating frame (23) is rotatably mounted with the rotating plate (24). One end of the clamping bar (25) is fixedly mounted with one end of the rotating plate (24). The first secondary clamp includes a first positioning shaft (27) and a first mounting plate (26). The first mounting plate (26) is fixedly mounted at the top of the first positioning shaft (27). The clamping bar (25) cooperates with the first mounting plate (26). The first positioning shaft (27) and the first cylinder (22) are both fixedly mounted on the mounting platform by bolts. The second clamp includes a second cylinder (28), a slide plate (29), a vertical plate (30), a second positioning shaft (31), a second rotating frame (32), and a connecting bar (15). The end of the telescopic shaft of the second cylinder (28) is fixedly set on one side of the slide plate (29). The vertical plate (30) is fixedly set on the top of the slide plate (29). One end of the second positioning shaft (31) is fixedly set on one side of the vertical plate (30). One end of the connecting bar (15) is rotatably set on one side of the second cylinder (28). One end of the second rotating frame (32) is rotatably set on the top of the slide plate (29). The other end of the second rotating frame (32) is rotatably set with the connecting bar (15). The second cylinder (28) is fixedly set on the mounting platform by bolts. The slide plate (29) is slidably set on the mounting platform by a slide rail.

2. A leg rest welding fixture according to claim 1, wherein Two of the No. 1 clamps are used to position one end of the two side connecting brackets (10), one of the No. 1 clamps is used to position the center of the main fixing bracket (14), and both of the No. 1 clamps are used to position the connection between the side connecting brackets (10) and the main fixing bracket (14).

3. The leg support welding fixture according to claim 2, characterized in that, Two of the second clamps are used to position the ends of the right leg support link assembly (11) and the left leg support link assembly (12), respectively. One of the second clamps is used to position the motor drive bracket (13), and the two second clamps are used to position the beginning ends of the right leg support link assembly (11) and the left leg support link assembly (12), respectively.

4. The leg support welding fixture according to claim 3, characterized in that, The welding fixture (2) for the leg support frame sub-assembly also includes three positioning frames that are fixed on the mounting plate by bolts. The three positioning frames are used to position the leg support support tube (9), the upper horizontal tube (7) of the leg support, and the lower horizontal tube (8) of the leg support, respectively.

5. The leg support welding fixture according to claim 1, characterized in that, Two of the first clamps are used to position one end of the right leg support connecting rod assembly (11) and the left leg support connecting rod assembly (12) of the leg support frame sub-assembly (3), respectively. Two of the second clamps are used to position the other end of the right leg support connecting rod assembly (11) and the left leg support connecting rod assembly (12) of the leg support frame sub-assembly (3), respectively. Two of the first clamps are used to position both sides of the motor mounting bracket (19), respectively. Two of the first clamps are used to position both ends of one side of the motor mounting bracket (19), respectively. Two of the first clamps are used to position the right fixing bracket (21) and the left fixing bracket (17) of the plastic part, respectively. Two of the second clamps are used to position the waist-shaped wire harness bracket (16) and the motor fixing bracket (18), respectively.

6. The leg support welding fixture according to claim 5, characterized in that, The welding fixture (5) for the leg support frame assembly also includes two positioning plates that are fixed to the top of the mounting plate by bolts. The two positioning plates are used to position the two horizontal connecting brackets (20).

7. The leg support welding fixture according to claim 1, characterized in that, Both the leg support frame sub-assembly welding fixture (2) and the leg support frame assembly welding fixture (5) are bolted to the same base platform (1). Both the leg support frame sub-assembly welding fixture (2) and the leg support frame assembly welding fixture (5) include a control switch for controlling the cylinder.

Images