Welding fixture for lower reinforcing plate of left C column of automobile
By designing a multi-directional positioning welding fixture, the problems of welding accuracy and efficiency of the lower reinforcement plate of the left C-pillar of automobiles were solved, achieving stable clamping and cost savings, and simplifying the clamping process of sheet metal parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-14
AI Technical Summary
In the current process of welding the lower reinforcement plate of the left C-pillar of automobiles, it is difficult to guarantee welding accuracy, and the production efficiency is low. The clamping mechanism is complex, which leads to increased costs and time.
A welding fixture comprising a base structure, a workpiece positioning and clamping assembly, and welding auxiliary components was designed. It adopts a middle support component and an inner and outer clamping welding fixture assembly, combined with a solenoid valve island and a PLC remote module box, to achieve multi-directional positioning and stable clamping.
It improves welding accuracy and efficiency, reduces fixture development costs and cycle, avoids over-positioning, simplifies the disassembly and assembly process of sheet metal parts, and saves costs.
Smart Images
Figure CN224115513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding fixtures, and in particular to a welding fixture for the lower reinforcing plate of the left C-pillar of an automobile. Background Technology
[0002] The left C-pillar lower reinforcement plate assembly is a crucial component of the vehicle's frame structure, serving a supporting and reinforcing function and playing a vital role in ensuring the overall rigidity and safety of the vehicle body. During the welding process, the left C-pillar lower reinforcement plate assembly requires numerous complex clamping mechanisms to ensure clamping stability and guarantee the strength, rigidity, and precision of the final component. Generally, the left C-pillar lower reinforcement plate assembly is pre-welded, followed by the welding of other accessories such as the reinforcement plate. This sequential, segmented welding method not only improves production efficiency and controls welding deformation but also helps ensure the overall stability of the structure and the quality of the welds. Utility Model Content
[0003] The purpose of this invention is to provide a welding fixture for the lower reinforcement plate of the left C-pillar of an automobile, thereby solving the problems of welding accuracy and improving welding efficiency.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a welding fixture for the lower reinforcing plate of the left C-pillar of an automobile, including a base structure, a workpiece positioning and clamping assembly disposed on the upper part of the base structure, and welding auxiliary components disposed on the upper part of the base structure. The workpiece positioning and clamping assembly includes a middle section support welding fixture assembly for clamping the middle part and the middle side end of the workpiece, an inner end clamping welding fixture assembly for clamping the inner end and the upper end face of the inner end of the workpiece, and an outer end clamping welding fixture assembly for clamping the outer end and the upper end face of the outer end of the workpiece. The middle section support welding fixture assembly includes a middle support main body disposed on the upper part of the base structure, a middle pneumatic clamping seat body disposed on the upper part of the middle support main body, a middle control cylinder connected to the side end of the middle pneumatic clamping seat body, and a middle lateral clamping block disposed on the upper part of the middle pneumatic clamping seat body.
[0005] The inner end clamping welding fixture assembly includes an inner end support main body located on the upper part of the base structure, an inner end pneumatic clamping seat body located on the upper part of the inner end support main body, an inner end control cylinder connected to the side end of the inner end pneumatic clamping seat body, and an inner end upper clamping claw located on the upper part of the inner end pneumatic clamping seat body.
[0006] The aforementioned outer clamping welding fixture assembly includes an outer end support main body located on the upper part of the base structure, an outer end pneumatic clamping seat body located on the upper part of the outer end support main body, an outer end control cylinder connected to the side end of the outer end pneumatic clamping seat body, and an outer end upper clamping claw located on the upper part of the outer end pneumatic clamping seat body.
[0007] The welding auxiliary components include an electromagnetic valve island, a PLC remote module box, and an operation control console, all located on the upper part of the base structure.
[0008] The beneficial effects of this utility model are as follows: This welding fixture has a simple structure, facilitates the assembly and disassembly of the sheet metal parts to be welded, and ensures the stability of the clamping. The left C-pillar lower reinforcement plate of the automobile avoids the over-positioning phenomenon caused by using welding fixtures as measuring supports, objectively reflecting the true accuracy in the free state; it reduces the total development cost and development cycle of the fixture and measuring support; the left C-pillar lower reinforcement plate of the automobile has multi-directional workpiece positioning on the moving base, requiring only one clamping without changing the fixture, saving time, effort, and costs.
[0009] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 for Figure 1 Side view.
[0012] Figure 3 for Figure 1 Top view.
[0013] Figure 4 for Figure 1 A three-dimensional image.
[0014] Figure 5 for Figure 1 The second stereoscopic view.
[0015] In the diagram: 1. Quick-change base plate, 2. Quick-change guide rail, 3. Quick-change guide seat, 4. Fixture fixing plate, 5. Fixture caster assembly, 6. Central support main body, 7. Central pneumatic clamping seat, 8. Central control cylinder, 9. Central lateral clamping block, 10. Inner end support main body, 11. Inner end pneumatic clamping seat, 12. Inner end control cylinder, 13. Inner end upper gripper, 14. Proximity sensor, 15. Outer end support main body, 16. Outer end pneumatic clamping seat, 17. Outer end control cylinder, 18. Outer end upper gripper, 19. Solenoid valve island, 20. PLC remote module box, 21. Operation control console, 22. Workpiece. Detailed Implementation
[0016] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in the application text to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] Example 1, such as Figure 1-5 As shown, a welding fixture for a lower reinforcing plate of the left C-pillar of an automobile includes a base structure, a workpiece positioning and clamping assembly disposed on the upper part of the base structure, and welding auxiliary components disposed on the upper part of the base structure. The base structure includes a quick-change base plate 1, a quick-change guide rail 2, a quick-change guide seat 3, a fixture fixing plate 4, and a fixture caster assembly 5.
[0019] The workpiece positioning and clamping assembly includes a middle section support welding fixture assembly that clamps the middle part and the middle side end of the workpiece 22, an inner end clamping welding fixture assembly that clamps the inner end and the upper end face of the inner end of the workpiece, and an outer end clamping welding fixture assembly that clamps the outer end and the upper end face of the outer end of the workpiece. The middle section support welding fixture assembly includes a middle support main body 6 located on the upper part of the fixture fixing plate 4, a middle pneumatic clamping seat body 7 located on the upper part of the middle support main body, a middle control cylinder 8 connected to the side end of the middle pneumatic clamping seat body, and a middle lateral clamping block 9 located on the upper part of the middle pneumatic clamping seat body.
[0020] The inner end clamping welding fixture assembly includes an inner end support main body 10 located on the upper part of the fixture fixing plate 4, an inner end pneumatic clamping seat body 11 located on the upper part of the inner end support main body, an inner end control cylinder 12 connected to the side end of the inner end pneumatic clamping seat body, and an inner end upper clamping jaw 13 located on the upper part of the inner end pneumatic clamping seat body. A proximity sensor 14 is provided at the lower part of the inner end pneumatic clamping seat body 11.
[0021] The outer clamping welding fixture assembly includes an outer end support main body 15 located on the upper part of the fixture fixing plate 4, an outer end pneumatic clamping seat body 16 located on the upper part of the outer end support main body, an outer end control cylinder 17 connected to the side end of the outer end pneumatic clamping seat body, and an outer end upper clamping jaw 18 located on the upper part of the outer end pneumatic clamping seat body.
[0022] The welding auxiliary components include an electromagnetic valve island 19, a PLC remote module box 20, and an operation control console 21, all located on the upper part of the base structure.
[0023] This welding fixture has a simple structure, facilitates the assembly and disassembly of sheet metal parts to be welded, and ensures clamping stability. For the left C-pillar lower reinforcement plate of the automobile, it avoids the over-positioning phenomenon that occurs when using welding fixtures as measuring supports, objectively reflecting the true accuracy in the free state; it reduces the overall development cost and development cycle of fixtures and measuring supports; the left C-pillar lower reinforcement plate of the automobile has multi-directional workpiece positioning on the moving base, requiring only one clamping without the need to change fixtures, saving time, effort, and costs.
[0024] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
[0025] The parts not covered in this utility model are the same as or can be implemented using existing technologies.
Claims
1. A welding jig for a left C-pillar lower reinforcement of an automobile, comprising a base structure, a workpiece positioning and clamping member group provided at an upper portion of the base structure, and a welding auxiliary member provided at an upper portion of the base structure, characterized in that: The workpiece positioning and clamping assembly includes a middle section support welding fixture assembly that clamps the middle part and the middle side end of the workpiece, an inner end clamping welding fixture assembly that clamps the inner end and the upper end face of the inner end of the workpiece, and an outer end clamping welding fixture assembly that clamps the outer end and the upper end face of the outer end of the workpiece. The middle section support welding fixture assembly includes a middle support main body located on the upper part of the base structure, a middle pneumatic clamping seat body located on the upper part of the middle support main body, a middle control cylinder connected to the side end of the middle pneumatic clamping seat body, and a middle lateral clamping block located on the upper part of the middle pneumatic clamping seat body. 2. The welding fixture for a left C-pillar lower reinforcement of an automobile as set forth in claim 1, characterized by: The inner end clamping welding fixture assembly includes an inner end support main body located on the upper part of the base structure, an inner end pneumatic clamping seat body located on the upper part of the inner end support main body, an inner end control cylinder connected to the side end of the inner end pneumatic clamping seat body, and an inner end upper clamping claw located on the upper part of the inner end pneumatic clamping seat body.
3. The welding fixture for the lower reinforcing plate of the left C-pillar of an automobile as described in claim 1, characterized in that: The aforementioned outer clamping welding fixture assembly includes an outer end support main body located on the upper part of the base structure, an outer end pneumatic clamping seat body located on the upper part of the outer end support main body, an outer end control cylinder connected to the side end of the outer end pneumatic clamping seat body, and an outer end upper clamping claw located on the upper part of the outer end pneumatic clamping seat body.
4. The welding fixture for the lower reinforcing plate of the left C-pillar of an automobile as described in claim 1, characterized in that: The welding auxiliary components include an electromagnetic valve island, a PLC remote module box, and an operation control console, all located on the upper part of the base structure.