A seat framework welding fixture headrest guide sleeve opening size quick adjusting mechanism

Abstract

The utility model relates to the headrest guide sleeve field especially seat framework welding fixture headrest guide sleeve open file size quick adjusting mechanism, including symmetrical installation of air cylinder on bottom plate, the output shaft of air cylinder is installed with air cylinder connecting frame, the first connecting plate is fixed with in air cylinder connecting frame, one end of first connecting plate is fixed with second connecting plate, one end of second connecting plate is fixed with corner adjusting block, the corner adjusting block is fixed with positioning core rod fixed support, the positioning core rod fixed support is fixed with headrest guide sleeve positioning core rod, this seat framework welding fixture headrest guide sleeve open file size quick adjusting mechanism, with air cylinder through linear guide rail drive headrest guide sleeve positioning core rod to carry out reciprocating linear sliding, through the limiting block of linear guide rail both ends, control the telescopic of air cylinder, realized headrest guide sleeve positioning core rod position's one key quick change. The whole set of mechanism simple structure does not need to disassemble and replace headrest guide sleeve positioning core rod, convenient operation has very high practicality.

Description

Technical Field

[0001] This utility model relates to the field of headrest guide sleeves, specifically a quick-adjustment mechanism for the opening size of a headrest guide sleeve in a seat frame welding fixture. Background Technology

[0002] Automotive seat frame welding fixtures are specialized fixtures with poor versatility. To address the issue of welding fixture variations arising from different headrest guide sleeve widths for the same type of automotive seat frame, the usual solutions are either quick-change of partial modules on the fixture or developing a new fixture for each variation. The partial module replacement method requires manual disassembly and replacement of small components of the fixture, a cumbersome and time-consuming process. Developing a new fixture for each variation incurs high investment costs and consumes excessive welding station resources.

[0003] Therefore, we propose a quick-adjustment mechanism for the opening size of the headrest guide sleeve in a seat frame welding fixture to solve the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a quick-adjustment mechanism for the opening size of the headrest guide sleeve of a seat frame welding fixture.

[0005] This utility model provides a quick-adjustment mechanism for the opening size of a headrest guide sleeve in a seat frame welding fixture. It includes cylinders symmetrically mounted on a base plate, a cylinder connecting frame mounted on the output shaft of each cylinder, a first connecting plate fixed to the cylinder connecting frame, a second connecting plate fixed to one end of the first connecting plate, an angle adjustment block fixed to one end of the second connecting plate, a positioning mandrel fixing bracket fixed to the angle adjustment block, and a headrest guide sleeve positioning mandrel fixed to the positioning mandrel fixing bracket.

[0006] The cylinder drives the cylinder connecting frame, the first connecting plate, the second connecting plate, the corner adjusting block and the positioning mandrel fixing bracket to move together, thereby adjusting the position of the positioning mandrel fixing bracket and realizing the variability of the position of the headrest guide sleeve positioning mandrel. Finally, the opening size of the backrest frame headrest guide sleeve can be quickly adjusted on the welding fixture.

[0007] Preferably, a cylinder mounting bracket is fixed to one side of the base plate, and the cylinder is fixed on the cylinder mounting bracket to facilitate the fixed connection between the cylinder and the base plate.

[0008] Preferably, the cylinder connecting bracket is provided with a T-slot, and the piston rod end of the cylinder is provided with a protrusion, which is located in the T-slot for easy installation and disassembly.

[0009] Preferably, a linear guide slider is fixed on the second connecting plate, and a slide rail is fixed on the base plate. The linear guide slider is slidably connected to the slide rail, making the movement of the second connecting plate more stable.

[0010] Preferably, the end of the headrest guide sleeve positioning core is chamfered to facilitate its engagement with the headrest guide sleeve.

[0011] Preferably, the base plate is symmetrically fixed with a left limiting block and a right limiting block for blocking the second connecting plate, which are used to limit the left and right sliding limit positions of the headrest guide sleeve positioning core. With the position restriction of the left and right limiting blocks, the position of the headrest guide sleeve positioning core can be restricted to the left limit position or the right limit position, realizing the variability of the position of the headrest guide sleeve positioning core. Finally, the opening size of the backrest frame headrest guide sleeve can be quickly adjusted on the welding fixture.

[0012] Compared with related technologies, the present invention provides the following beneficial effects:

[0013] A cylinder drives the headrest guide sleeve positioning mandrel to reciprocate linearly via a linear guide rail. The extension and retraction of the cylinder are controlled by left and right limit blocks at both ends of the linear guide rail, enabling one-button quick-change of the headrest guide sleeve positioning mandrel's position. The entire mechanism has a simple structure, eliminates the need to disassemble and replace the headrest guide sleeve positioning mandrel, is easy to operate, and is highly practical. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the positioning core rod structure of the headrest guide sleeve of this utility model;

[0016] Figure 3 This is a schematic diagram of the back of the overall structure of this utility model.

[0017] The following are the labels in the diagram: 1. Base plate; 2. Cylinder; 3. Cylinder connecting bracket; 4. First connecting plate; 5. Second connecting plate; 6. Angle adjusting block; 7. Positioning mandrel fixing bracket; 8. Headrest guide sleeve positioning mandrel; 9. Cylinder fixing bracket; 10. T-slot; 11. Protrusion; 12. Linear guide rail slider; 13. Slide rail; 14. Chamfer; 15. Limit block. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to the following: Figures 1 to 3A quick-adjustment mechanism for the opening size of a headrest guide sleeve in a seat frame welding fixture includes a base plate 1, on which cylinders 2 are symmetrically mounted. To facilitate the fixed connection between the cylinders 2 and the base plate 1, a cylinder mounting bracket 9 is fixed to one side of the base plate 1, and the cylinders 2 are fixed to the cylinder mounting bracket 9. A cylinder connecting bracket 3 is mounted on the output shaft of the cylinders 2. The cylinder connecting bracket 3 has a T-slot 10, and the piston rod end of the cylinder 2 has a protrusion 11, which is located within the T-slot 10. This design facilitates the installation and removal of the cylinder connecting bracket 3.

[0020] A first connecting plate 4 is fixed to the upper part of the cylinder connecting bracket 3, and a second connecting plate 5 is fixed to one end of the first connecting plate 4. To ensure smooth movement of the second connecting plate 5, a linear guide slider 12 is fixed to the second connecting plate 5, and a slide rail 13 is fixed to the base plate 1. The linear guide slider 12 is slidably connected to the slide rail 13. An angle adjusting block 6 is fixed to the other end of the second connecting plate 5, and a positioning mandrel fixing bracket 7 is fixed to the angle adjusting block 6. A headrest guide sleeve positioning mandrel 8 is fixed to the positioning mandrel fixing bracket 7. The end of the headrest guide sleeve positioning mandrel 8 is chamfered 14 to facilitate its cooperation with the headrest guide sleeve.

[0021] Driven by cylinder 2, cylinder connecting bracket 3, first connecting plate 4, second connecting plate 5, corner adjusting block 6, and positioning mandrel fixing bracket 7 move together, thereby adjusting the position of positioning mandrel fixing bracket 7 and realizing the variability of the position of headrest guide sleeve positioning mandrel 8. In order to limit the left and right sliding limit positions of headrest guide sleeve positioning mandrel 8, limit blocks 15 and right limit blocks 16 are symmetrically fixed on the base plate 1 to block the movement of the second connecting plate 5. With the position restriction of left limit block 15 and right limit block 16, the position of headrest guide sleeve positioning mandrel 8 can be restricted to the left limit position or the right limit position, realizing the variability of the position of headrest guide sleeve positioning mandrel, and finally realizing the effect of quick adjustment of the opening size of the backrest frame headrest guide sleeve on the welding fixture.

[0022] This design not only improves the flexibility and precision of adjustment, but also ensures the stability and reliability of the welding fixture during use.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A quick-adjustment mechanism for the opening size of a headrest guide sleeve in a seat frame welding fixture, characterized in that, The base plate (1) is symmetrically mounted with cylinders (2), the output shaft of the cylinders (2) is mounted with a cylinder connecting frame (3), a first connecting plate (4) is fixed on the cylinder connecting frame (3), a second connecting plate (5) is fixed at one end of the first connecting plate (4), an angle adjusting block (6) is fixed at one end of the second connecting plate (5), a positioning mandrel fixing bracket (7) is fixed on the angle adjusting block (6), and a headrest guide sleeve positioning mandrel (8) is fixed on the positioning mandrel fixing bracket (7).

2. The quick-adjustment mechanism for the opening size of the headrest guide sleeve in a seat frame welding fixture according to claim 1, characterized in that, A cylinder mounting bracket (9) is fixed on one side of the base plate (1), and the cylinder (2) is fixed on the cylinder mounting bracket (9).

3. The quick-adjustment mechanism for the opening size of the headrest guide sleeve in a seat frame welding fixture according to claim 1, characterized in that, The cylinder connecting bracket (3) is provided with a T-slot (10), and the piston rod end of the cylinder (2) is provided with a protrusion (11), and the protrusion (11) is located in the T-slot (10).

4. The quick-adjustment mechanism for the opening size of the headrest guide sleeve in a seat frame welding fixture according to claim 1, characterized in that, A linear guide slider (12) is fixed on the second connecting plate (5), and a slide rail (13) is fixed on the base plate (1). The linear guide slider (12) is slidably connected to the slide rail (13).

5. The quick-adjustment mechanism for the opening size of the headrest guide sleeve in a seat frame welding fixture according to claim 1, characterized in that, The headrest guide sleeve positioning core (8) has a chamfer (14) at its end.

6. The quick-adjustment mechanism for the opening size of the headrest guide sleeve in a seat frame welding fixture according to claim 1, characterized in that, The base plate (1) is symmetrically fixed with a left limiting block (15) and a right limiting block (16) for blocking the second connecting plate (5).

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