A welding fixture
By designing a welding fixture with a support base, positioning groove, and rotary lifting cylinder, the problem of loose welding position of workpieces is solved, achieving high-quality welding. It is suitable for the stable fixing and protection of various workpieces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU HONGMING AUTOMOTIVE COMPONENTS CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-02
AI Technical Summary
Existing welding fixtures cannot guarantee a tight fit between the workpiece and the welding position, resulting in unstable welding quality. Gaps can affect arc stability and molten pool formation, leading to defects such as porosity and incomplete penetration.
A welding fixture was designed, comprising a support base, a positioning groove, a telescopic cylinder, and a pressing rod. Through precise positioning and inclined plane guidance, the pressing rod is controlled by the cylinder to lift and rotate, and combined with rubber blocks to increase friction, ensuring that the workpiece is firmly abutted.
It effectively reduces the gap between workpiece welding positions, improves the stability of welding quality, ensures the quality of welded joints, enhances operational efficiency, and protects the workpiece surface.
Smart Images
Figure CN224309932U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of welding tooling technology, and specifically relates to a welding fixture. Background Technology
[0002] In welding processes, to ensure precise alignment and a high-quality weld joint between two workpieces, fixtures are typically used for pre-positioning and fixing. This effectively prevents displacement due to thermal deformation or external forces during welding. However, most existing welding fixtures only provide simple clamping and fixing, failing to guarantee a tight and stable contact between the two workpieces during pre-positioning. In practice, gaps often exist between the workpieces, affecting not only the stability of the welding arc and the formation of the molten pool but also leading to defects such as porosity and incomplete penetration in the weld. Ultimately, this results in unstable weld quality, failing to meet increasingly stringent welding process requirements and product quality standards. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a welding fixture to solve the problem that gaps exist between the welding surfaces of existing welding fixtures and workpieces, affecting welding quality. This welding fixture can effectively ensure the contact between the welding surfaces of the first and second workpieces, thereby improving welding quality.
[0004] This utility model discloses a welding fixture for welding a first workpiece and a second workpiece. It includes a support base, a first telescopic cylinder, a first pressing rod, a positioning post, a second pressing rod, and a second telescopic cylinder. The support base has a positioning groove for positioning the first workpiece. The first pressing rod is vertically positioned above the positioning groove. The first telescopic cylinder is connected to the first pressing rod and controls its lifting and lowering. Multiple positioning posts are spaced apart on the support base and located on the same side of the positioning groove. The top surface of each positioning post is a downward-sloping surface towards the positioning groove, used to place the second workpiece. The second pressing rod is vertically positioned above the positioning post. The second telescopic cylinder is connected to the second pressing rod and controls its lifting and lowering.
[0005] Furthermore, the first telescopic cylinder and the second telescopic cylinder are rotary lifting cylinders.
[0006] Furthermore, a first rubber block is provided below the first pressing rod, and a second rubber block is provided below the second pressing rod.
[0007] The welding fixture, by setting a positioning groove on the support base, can accurately position the first workpiece, ensuring its positional accuracy. The first telescopic cylinder controls the raising and lowering of the first pressing rod, which can firmly press the first workpiece into the positioning groove, preventing displacement during welding. The top surfaces of the multiple positioning columns are set as inclined planes sloping downwards towards the positioning groove. When placing the second workpiece, gravity and the guiding effect of the inclined plane can be used to make the second workpiece naturally move closer to the first workpiece. In particular, the second telescopic cylinder controls the raising and lowering of the second pressing rod, and the inclined plane can apply a force to the second workpiece to displace it towards the first workpiece, further ensuring the stability of the second workpiece's position, effectively reducing the gap between the two welding positions, and achieving a tight contact. This structural design effectively solves the problem that existing fixtures cannot guarantee the mutual contact of the welding positions of the workpieces from both the workpiece positioning and pressing levels, significantly improving the stability of welding quality and ensuring the quality of the welded joint. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0009] Figure 1 This is a schematic diagram of the structure of a welding fixture. Detailed Implementation
[0010] This utility model discloses a welding fixture that can effectively ensure the contact between the welding surfaces of the first workpiece and the second workpiece, thereby improving the welding quality.
[0011] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0012] See Figure 1As shown, this utility model discloses a welding fixture for welding a first workpiece 1 and a second workpiece 2. It includes a support base 7, a first telescopic cylinder 3, a first pressing rod 4, positioning pins 8, a second pressing rod 11, and a second telescopic cylinder 10. The support base 7 is provided with a positioning groove 6 for positioning the first workpiece 1. The first pressing rod 4 is vertically positioned above the positioning groove 6. The first telescopic cylinder 3 is connected to the first pressing rod 4 and is used to control the lifting and lowering of the first pressing rod 4. Multiple positioning pins 8 are spaced apart on the support base 7 and located on the same side of the positioning groove 6. The top surface of each positioning pin 8 is an inclined surface sloping downwards towards the positioning groove 6. The inclined surface is used to place the second workpiece 2. The second pressing rod 11 is vertically positioned above the positioning pins 8. The second telescopic cylinder 10 is connected to the second pressing rod 11 and is used to control the lifting and lowering of the second pressing rod 11.
[0013] The welding fixture, by setting a positioning groove 6 on the support base 7, can accurately position the first workpiece 1, ensuring its positional accuracy. The first telescopic cylinder 3 controls the raising and lowering of the first pressing rod 4, which can firmly press the first workpiece 1 into the positioning groove 6, preventing it from shifting during welding. The top surfaces of the multiple positioning posts 8 are set as inclined surfaces sloping downwards towards the positioning groove 6. When placing the second workpiece 2, gravity and the guiding effect of the inclined surface can be used to make the second workpiece 2 naturally move closer to the first workpiece 1. In particular, the second telescopic cylinder 10 controls the raising and lowering of the second pressing rod 11, and the inclined surface can apply a force to the second workpiece 2 to move towards the first workpiece 1, further ensuring the stability of the position of the second workpiece 2, effectively reducing the gap between the two welding positions, and achieving a tight contact. This structural design effectively solves the problem that existing fixtures cannot guarantee the mutual contact of the welding positions of the workpieces from the two levels of workpiece positioning and pressing, significantly improving the stability of welding quality and ensuring the quality of the welded joint.
[0014] The first telescopic cylinder 3 and the second telescopic cylinder 10 are rotary lifting cylinders.
[0015] When the first telescopic cylinder 3 and the second telescopic cylinder 10 are rotary lifting cylinders, compared with ordinary cylinders, they can not only realize the lifting function of the pressing rod, but also rotate during the lifting process. When pressing the workpiece, the rotary lifting cylinder drives the pressing rod to rotate, which can make the surface of the workpiece more evenly stressed, avoid excessive or insufficient local pressure, and further improve the fixing effect of the workpiece. At the same time, after welding is completed, the rotary lifting cylinder can drive the pressing rod to rotate and reset, which facilitates the quick disassembly of the workpiece, improves the efficiency of the welding operation, and optimizes the entire welding process.
[0016] A first rubber block 5 is provided below the first pressing rod 4, and a second rubber block 9 is provided below the second pressing rod 11.
[0017] The first rubber block 5 located below the first pressing rod 4 and the second rubber block 9 located below the second pressing rod 11 utilize the elastic properties of rubber material. When pressing the workpiece, the rubber blocks can fit tightly against the workpiece surface, increasing friction and preventing the workpiece from sliding during the pressing process, thus improving the fixing effect. In addition, the rubber blocks also act as a buffer, preventing the pressing rod from damaging the workpiece surface, protecting the appearance and performance of the workpiece. This is especially suitable for welding workpieces with high surface quality requirements, broadening the application range of welding fixtures and improving their versatility.
[0018] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.
Claims
1. A welding fixture for welding a first workpiece and a second workpiece, characterized in that, The device includes a support base, a first telescopic cylinder, a first pressing rod, a positioning post, a second pressing rod, and a second telescopic cylinder. The support base has a positioning groove for positioning a first workpiece. The first pressing rod is vertically positioned above the positioning groove. The first telescopic cylinder is connected to the first pressing rod and is used to control the lifting and lowering of the first pressing rod. Multiple positioning posts are spaced apart on the support base and located on the same side of the positioning groove. The top surface of each positioning post is a downward-sloping surface towards the positioning groove, used to place a second workpiece. The second pressing rod is vertically positioned above the positioning post. The second telescopic cylinder is connected to the second pressing rod and is used to control the lifting and lowering of the second pressing rod.
2. The welding fixture according to claim 1, characterized in that, The first telescopic cylinder and the second telescopic cylinder are rotary lifting cylinders.
3. A welding fixture according to claim 1, characterized in that, A first rubber block is provided below the first pressing rod, and a second rubber block is provided below the second pressing rod.