Rapid clamping fixture for laser welding

Abstract

A rapid clamping fixture for laser welding relates to the technical field of auxiliary welding tools, serves as an auxiliary welding device, is used for clamping a first workpiece and a second workpiece and comprises a positioning base and a second workpiece positioning groove which is formed in the positioning base and provided with an upward opening, and the shape of the second workpiece positioning groove is similar to that of the second workpiece. A supporting plate is vertically arranged on the rear side of the positioning base, a first workpiece positioning block is horizontally and fixedly connected to the front side of the supporting plate, the shape of the first workpiece positioning block is similar to that of the first workpiece, the first workpiece positioning block is located above the second workpiece positioning groove, and a pressing assembly is arranged above the first workpiece positioning block. The pressing assembly is used for pressing the first workpiece, so that the first workpiece and the second workpiece abut against each other and are in a to-be-welded state. According to the laser welding device, the workpiece positioning accuracy and the welding stability are improved, and the laser welding efficiency and quality are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of welding auxiliary equipment technology, specifically to a laser welding quick clamping fixture. Background Technology

[0002] Currently, traditional manual TIG welding is still widely used in precision workpiece welding fields (such as aerospace, electronic components, and medical devices). This technique relies on operators holding a TIG welding torch to weld the workpiece, using argon gas as a protective gas to prevent oxidation. Although manual TIG welding is highly flexible, it has significant drawbacks in terms of efficiency, accuracy, and consistency.

[0003] Domestic hardware accessories, such as Figure 1 As shown, a type of hardware pendant requires welding a first workpiece and a second workpiece together. The current process is traditional manual argon arc welding. This process is highly dependent on manual labor, and the welding quality is highly dependent on the experience and skill level of the operator. It is prone to defects such as uneven welds, porosity, or cracks due to fatigue or operational errors. It is inefficient, as manual welding requires repeated positioning and adjustment of the welding torch angle, and welding a single piece takes a long time, making it difficult to meet the needs of mass production. It has poor consistency, as manual operation makes it difficult to ensure the consistency of welding parameters (such as welding speed and penetration) for multiple workpieces, resulting in large fluctuations in product qualification rate. It is also costly, requiring professional welders and a continuous supply of argon gas, resulting in high long-term production costs. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a high-efficiency laser welding fixture that can be installed on a multi-station laser welding machine to perform alternating positioning and welding at multiple stations, thereby improving production efficiency and welding quality.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A laser welding quick clamping fixture, as a welding auxiliary device, is used to clamp a first workpiece and a second workpiece. It includes a positioning base and a second workpiece positioning groove disposed on the positioning base with its opening facing upwards. The second workpiece positioning groove is similar in shape to the second workpiece. A support plate is vertically disposed on the rear side of the positioning base, and a first workpiece positioning block is horizontally fixedly connected to the front side of the support plate. The first workpiece positioning block is similar in shape to the first workpiece and is located above the second workpiece positioning groove. A clamping assembly is disposed above the first workpiece positioning block, and the clamping assembly is used to clamp the first workpiece, so that the first and second workpieces are pressed against each other and in a state ready for welding.

[0007] Furthermore, the clamping assembly includes a pressure block fixing plate horizontally fixedly mounted on the support plate. Equal-height sleeves are movably arranged at both horizontal ends of the pressure block fixing plate. A hanging platform is provided at the upper end of each equal-height sleeve, and the lower end of each equal-height sleeve is connected to the pressure block via fasteners. Four guide pins are provided on both sides of the equal-height sleeve connected to the pressure block. Pressure springs are fitted around the guide pins. The lower end of each pressure spring abuts against the pressure block, and the upper end abuts against the pressure block fixing plate. The pressure springs cause the pressure block to exert downward pressure, and when subjected to an upward thrust from below, it can move upward.

[0008] Furthermore, a positioning pin is provided on the rear side of the second workpiece positioning groove. When the second workpiece is pushed into the second workpiece positioning groove, the second workpiece abuts against the positioning pin to form a positioning.

[0009] Furthermore, the second workpiece has an arched bottom plate structure, and the positioning groove of the second workpiece is correspondingly set as an arched long groove structure;

[0010] The first workpiece is a semi-tubular structure, and the first workpiece positioning block is correspondingly set as an arc-shaped block structure.

[0011] Furthermore, the connection between the support plate and the positioning base is detachable, so that the support plate can be replaced according to actual needs to adapt to workpieces of different heights or positions.

[0012] Furthermore, the lower surface of the pressure block is provided with anti-slip textures or anti-slip pads that match the shape of the upper surface of the first workpiece to prevent the first workpiece from moving or sliding during the welding process.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention uses a customized second workpiece positioning groove and a first workpiece positioning block to precisely match and support the second and first workpieces respectively. By utilizing the equal-height sleeve, pressure spring and pressure block in the clamping assembly to apply stable downward pressure, the two workpieces are ensured to fit tightly together. This invention improves the accuracy of workpiece positioning and the stability of welding, effectively enhancing the efficiency and quality of laser welding. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the welded workpiece;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is the left view of the present invention;

[0019] Figure 4 This is a schematic diagram showing the assembled workpiece of this utility model.

[0020] In the figure: 1. Positioning base, 2. Second workpiece positioning groove, 3. Second workpiece positioning pin, 4. Support plate, 5. First workpiece positioning block, 6. Pressure block fixing plate, 7. Pressure block, 8. Equal height sleeve, 9. Spring, 10. Guide pin. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] like Figure 1-4 As shown, a laser welding quick clamping fixture, as a welding auxiliary device, is used to clamp a first workpiece 100 and a second workpiece 200. It includes a positioning base 1 and a second workpiece positioning groove 2 disposed on the positioning base 1 with its opening facing upward. The second workpiece positioning groove 2 is similar in shape to the second workpiece 200. A support plate 4 is vertically disposed on the rear side of the positioning base 1, and a first workpiece positioning block 5 is horizontally fixedly connected to the front side of the support plate 4. The first workpiece positioning block 5 is similar in shape to the first workpiece 100 and is located above the second workpiece positioning groove 2. A clamping component is disposed above the first workpiece positioning block 5. The clamping component is used to clamp the first workpiece 100, so that the first workpiece 100 and the second workpiece 200 are pressed against each other and in a state ready for welding.

[0026] This invention achieves preliminary positioning and support of the second workpiece 200 by setting a second workpiece positioning groove 2 that is similar in shape to the second workpiece 200, thus ensuring the accuracy and stability of the position of the second workpiece 200 before welding.

[0027] The first workpiece positioning block 5 is similar in shape to the first workpiece 100, so that the first workpiece 100 accurately matches the positioning block and forms a contact surface to be welded with the second workpiece 200 below.

[0028] By applying downward pressure to the first workpiece 100 through the clamping assembly, the first workpiece 100 and the second workpiece 200 are ensured to be in close contact, providing a stable contact surface for laser welding.

[0029] Specifically, as shown in the figure, the clamping assembly includes a pressure block fixing plate 6 horizontally fixed on the support plate 4. Equal-height sleeves 8 are movably arranged at both ends of the horizontally mounted pressure block fixing plate 6. A hanging platform is provided at the upper end of each equal-height sleeve 8, and the lower end of each equal-height sleeve 8 is connected to the pressure block 7 via fasteners. Four guide pins 10 are provided on both sides of the equal-height sleeve 8 connected to the pressure block. A pressure spring 9 is fitted around the outside of each guide pin 10. The lower end of the pressure spring 9 abuts against the pressure block 7, and the upper end abuts against the pressure block fixing plate 6. The pressure spring 9 causes the pressure block 7 to generate downward pressure, and when subjected to an upward pushing force from below, it can move upward.

[0030] The combination of the equal-height sleeve 8 and the pressure spring 9 allows the clamping assembly to have a certain degree of elastic adjustment capability when subjected to external force. This enables the clamping assembly to automatically adjust the pressure according to the actual contact between the first workpiece 100 and the second workpiece 200, ensuring a tight contact between them. The guide pin 10 not only enhances the structural stability of the clamping assembly but also ensures the linearity of the pressure block 7 during vertical movement, preventing workpiece damage or poor welding due to misalignment.

[0031] Specifically, as shown in the figure, a positioning pin 3 is provided on the rear side of the second workpiece positioning groove 2. When the second workpiece 200 is pushed into the second workpiece positioning groove 2, the second workpiece 200 abuts against the positioning pin 3 to form a positioning. The positioning pin 3 is provided on the rear side of the second workpiece positioning groove 2. When the second workpiece 200 is pushed into the positioning groove, it abuts against the positioning pin, which further enhances the positioning accuracy of the second workpiece 200.

[0032] Specifically, as shown in the figure, the second workpiece 200 has an arched bottom plate structure, and the second workpiece positioning groove 2 is correspondingly set as an arched long groove structure; the first workpiece 100 has a semi-tubular structure, and the first workpiece positioning block 5 is correspondingly set as an arc-shaped block structure. The second workpiece positioning groove 2 and the first workpiece positioning block 5 are customized according to the shape of the workpiece, ensuring a tight fit and positioning accuracy between the fixture and the workpiece.

[0033] Specifically, as shown in the figure, the connection between the support plate 4 and the positioning base 1 is detachable, allowing the support plate 4 to be replaced according to actual needs to adapt to workpieces of different heights or positions. This detachable connection between the support plate 4 and the positioning base 1 enables the fixture to be flexibly adjusted according to different workpiece sizes and shapes, improving the fixture's versatility and practicality.

[0034] Specifically, as shown in the figure, the lower surface of the pressure block 7 is provided with anti-slip textures or anti-slip pads that match the shape of the upper surface of the first workpiece 100 to prevent the first workpiece 100 from moving or sliding during the welding process.

[0035] Specifically, the implementation process of this utility model is as follows: This utility model is designed for use with a multi-station laser welding machine. During use, it needs to be sequentially installed on multiple stations of the laser welding machine, and the positioning components on each station must be adjusted to ensure consistent positioning and consistent product dimensions. During welding, the second workpiece is pushed into the second workpiece positioning groove until it reaches the second workpiece positioning pin 3, thus securing the second workpiece on the positioning base 1. Then, the first workpiece is pushed into the gap between the pressure block 7 and the second workpiece, until its rear end touches the first workpiece positioning block 5. Due to the spring force, the first workpiece is firmly pressed into the fixture. At this point, the welding switch is activated, and the station turntable on the laser welding machine rotates the fixture, causing the fixture with the product loaded to move into the welding station for welding. The fixture with the welded product then moves to the loading / unloading station. Unloading is then simple; the product is easily pulled out of the fixture. After unloading, the next loading step can proceed.

[0036] Based on the above technical principles, this utility model reduces unnecessary material loading and unloading actions, lowers labor intensity, saves time, and improves work efficiency.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser welding quick clamping jig as a welding auxiliary device for clamping a first workpiece and a second workpiece, characterized by, The device includes a positioning base, a second workpiece positioning groove disposed on the positioning base with its opening facing upward, the second workpiece positioning groove having a similar shape to the second workpiece, a support plate vertically disposed on the rear side of the positioning base, and a first workpiece positioning block horizontally fixedly connected to the front side of the support plate, the first workpiece positioning block having a similar shape to the first workpiece, the first workpiece positioning block being located above the second workpiece positioning groove, and a pressing component disposed above the first workpiece positioning block, the pressing component being used to press the first workpiece, so that the first workpiece and the second workpiece are pressed against each other and in a state ready for welding; The clamping assembly includes a pressure block fixing plate horizontally fixedly mounted on the support plate. Equal-height sleeves are movably arranged at both horizontal ends of the pressure block fixing plate. A hanging platform is provided at the upper end of each equal-height sleeve, and the lower end of each equal-height sleeve is connected to the pressure block via fasteners. Four guide pins are provided on both sides of the equal-height sleeve connected to the pressure block. Pressure springs are fitted around the guide pins. The lower end of each pressure spring abuts against the pressure block, and the upper end abuts against the pressure block fixing plate. The pressure springs exert downward pressure on the pressure block, allowing it to move upward when subjected to an upward thrust from below.

2. A laser welding quick clamping fixture according to claim 1, characterized in that, A positioning pin is provided on the rear side of the second workpiece positioning groove. The second workpiece is pushed into the second workpiece positioning groove, and the second workpiece abuts against the positioning pin to form a positioning.

3. A laser welding quick clamping fixture according to claim 2, wherein, The second workpiece has an arched bottom plate structure, and the positioning groove of the second workpiece is correspondingly set as an arched long groove structure; The first workpiece is a semi-tubular structure, and the first workpiece positioning block is correspondingly set as an arc-shaped block structure.

4. The laser welding quick clamping fixture according to claim 3, characterized in that, The connection between the support plate and the positioning base is detachable, so that the support plate can be replaced according to actual needs to adapt to workpieces of different heights or positions.

5. A laser welding quick clamping fixture according to claim 4, wherein The lower surface of the pressure block is provided with anti-slip textures or anti-slip pads that match the shape of the upper surface of the first workpiece to prevent the first workpiece from moving or sliding during the welding process.

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