A welding fixture and welding system for thin plate components
By using the clamping and heating of the fixture base and cover plate assembly, combined with laser welding and gas purging, the problems of deformation and defects in the welding process of thin plate components are solved, and high-quality welding results are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RAYCUS FIBER LASER TECH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-30
AI Technical Summary
When welding thin plate components, especially water-cooled plates, micropores, cracks, or lack of fusion defects are prone to occur, leading to coolant leakage. At the same time, thin plate components are prone to deformation during the welding process, affecting flatness and fit, and reducing heat dissipation efficiency.
The thin plate component is clamped by a fixture base and cover plate assembly, and preheated by a heating element in the fixture base. The heated plate component is then laser welded using a laser and a galvanometer. The welding area is purged with protective gas through an exhaust groove and an inlet to control the temperature gradient and thermal deformation.
It improves the welding quality of thin plate components, reduces welding defects, ensures flatness and sealing, and enhances welding efficiency and heat dissipation performance.
Smart Images
Figure CN224424739U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding technology, specifically to a welding fixture and welding system for thin plate components. Background Technology
[0002] With the rapid development of science and technology, there is a growing demand for large-area water-cooled plates in fields such as 3C (computers, communications, and consumer electronics) and high-performance vehicles to quickly dissipate heat generated during product operation, thereby improving efficiency and reliability. Furthermore, to reduce the overall weight of products, increasingly stringent requirements are being placed on the thickness of water-cooled plates. Currently, the thickness of water-cooled plates is typically less than 1mm.
[0003] To reduce coolant leakage in water-cooled plates, it is essential to ensure good sealing. During the welding process, even minute pores, cracks, or incomplete fusion defects can lead to coolant leakage. Because water-cooled plates are relatively thin and require precise flatness, they are prone to deformation during welding. This can result in lower flatness, affecting the fit between the plate and the cooled components and reducing heat dissipation efficiency. Utility Model Content
[0004] The embodiments of this application provide a welding fixture and welding system for thin plate components. The welding fixture for thin plate components can ensure the flatness of the thin plate components during the welding process and improve the welding quality.
[0005] In a first aspect, embodiments of this application provide a welding fixture for thin-plate components, comprising:
[0006] The fixture base contains a heating element and is used to support thin plate components.
[0007] Cover plate assembly, used to press sheet metal components onto a fixture base.
[0008] In some embodiments, the cover assembly includes a cover and an vent plate;
[0009] The air outlet plate is provided with at least one air inlet and at least one air outlet groove, the air outlet groove being adapted to discharge air toward the fixture base;
[0010] The cover plate is located on the side of the vent plate away from the fixture base.
[0011] In some embodiments, the angle between the air outlet direction of the air outlet groove and the plane where the fixture base is located is 30°-60°.
[0012] In some embodiments, the vent plate is provided with a plurality of vent slots;
[0013] Multiple air vents are arranged around the edge of the air vent plate in the circumferential direction.
[0014] In some embodiments, the cover plate is provided with at least one fastener configured to press the cover plate assembly onto the fixture base.
[0015] In some embodiments, the clamp base includes a first contact surface near the cover plate assembly, the cover plate assembly has a second contact surface near the clamp base, and the sheet member is adapted to be disposed between the first contact surface and the second contact surface;
[0016] The area of the first contact surface is larger than the area of the second contact surface.
[0017] In some embodiments, the thin-plate component includes a water-cooled plate;
[0018] The thickness of the water-cooled plate is less than or equal to 1 mm.
[0019] Secondly, embodiments of this application also provide a thin-plate component welding system, including the thin-plate component welding fixture described above.
[0020] In some embodiments, the thin-plate component welding system further includes a laser and a galvanometer;
[0021] The laser is used to emit a laser beam, which is then directed through a galvanometer onto the area of the thin sheet component to be welded.
[0022] In some embodiments, the laser includes a continuous laser or a quasi-continuous laser.
[0023] The beneficial effects of the embodiments of this application are as follows:
[0024] In the embodiments of this application, the thin-plate component welding fixture includes a fixture base and a cover plate assembly. The fixture base contains a heating element and supports the thin-plate component. The cover plate assembly presses the thin-plate component onto the fixture base. Through the cooperation of the cover plate assembly and the fixture base, the thin-plate component can be clamped between them, maintaining good flatness during welding and ensuring welding quality. The heating element within the fixture base preheats the thin-plate component and heats it during welding, reducing the temperature gradient between the welding area and other areas, thereby improving the thermal deformation of the thin-plate component during welding and reducing defects such as incomplete welds, pores, and deformation. In other words, the thin-plate component welding fixture provided in this application can maintain the flatness of the thin-plate component while reducing the influence of the temperature gradient during welding, lowering the risk of thermal deformation, and improving welding quality. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of the welding fixture for thin-plate components provided in the embodiments of this application;
[0027] Figure 2 This is a partial structural schematic diagram of the air outlet plate provided in the embodiments of this application;
[0028] Figure 3 This is a schematic diagram of the structure of the welding fixture for thin plate components provided in the embodiments of this application.
[0029] Explanation of reference numerals in the attached figures:
[0030] 10. Welding fixture for thin plate components; 1. Fixture base; 11. Heating element; 12. Control button; 2. Cover plate assembly; 21. Cover plate; 211. Fastener; 22. Exhaust plate; 221. Inlet; 222. Exhaust groove; 3. Laser; 4. Galvanometer; 5. Field lens. Detailed Implementation
[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.
[0032] Firstly, such as Figure 1As shown, an embodiment of this application provides a thin-plate component welding fixture 10, including a fixture base 1 and a cover plate assembly 2. The fixture base 1 contains a heating element 11 and is used to support the thin-plate component. The cover plate assembly 2 is used to press the thin-plate component onto the fixture base 1. Through the cooperation of the cover plate assembly 2 and the fixture base 1, the thin-plate component can be clamped between them, maintaining good flatness during welding and ensuring welding quality. The heating element 11 within the fixture base 1 can preheat the thin-plate component and heat it during welding, reducing the temperature gradient between the welding area and other areas, thereby improving the thermal deformation of the thin-plate component during welding and reducing defects such as incomplete welds, pores, and deformation. In other words, the thin-plate component welding fixture 10 provided in this embodiment can maintain the flatness of the thin-plate component while reducing the influence of the temperature gradient during welding, lowering the risk of thermal deformation, and improving welding quality.
[0033] For example, the heating element 11 can be a heating tube disposed in the fixture base 1, and the heating tube can be distributed in an S-shape in the fixture base 1 to improve the uniformity of heating.
[0034] The fixture base 1 is also equipped with a control button 12 for turning the heating element 11 on or off, which can turn the heating element 11 on or off as needed.
[0035] In some embodiments, such as Figure 1 and Figure 2 As shown, the cover plate assembly 2 includes a cover plate 21 and an air outlet plate 22. The air outlet plate 22 is provided with at least one air inlet 221 and at least one air outlet groove 222, the air outlet groove 222 being adapted to discharge air toward the fixture base 1. The cover plate 21 is located on the side of the air outlet plate 22 facing away from the fixture base 1.
[0036] In the cover plate assembly 2, the cover plate 21 and the vent plate 22 provide downward pressure on the thin plate component supported on the fixture base 1, thereby ensuring the flatness of the thin plate component. The air inlet 221 and air outlet 222 provided on the vent plate 22 can blow air into the welding area of the thin plate component, improve the heat dissipation effect, make the temperature distribution of the thin plate component more uniform throughout the welding process, reduce the influence of temperature gradient, reduce the risk of thermal deformation during welding, and ensure the welding quality of the thin plate component.
[0037] For example, during the welding of thin plate components, protective gases such as argon and nitrogen can be introduced into the exhaust plate 22 through the air inlet 221. These gases are then blown from the exhaust groove 222 to the welding area to dissipate heat and cool the welding area. At the same time, the protective gas can reduce weld oxidation and porosity, thereby improving weld quality.
[0038] In some embodiments, such as Figure 1 and Figure 2 As shown, the angle between the air outlet direction of the air outlet groove 222 and the plane where the fixture base 1 is located is 30°-60°.
[0039] By making the angle between the air outlet direction of the air outlet groove 222 and the plane where the fixture base 1 is located 30°-60°, the stroke of the gas ejected from the air outlet groove 222 can be increased, so that the distance between the air outlet groove 222 and the welding area does not need to be too close, reducing the interference of the cover plate assembly 2 on the welding area and helping to improve the convenience of welding.
[0040] In some embodiments, the air outlet direction of the air outlet groove 222 forms an angle of 45° with the plane where the fixture base 1 is located, which can ensure the distance between the air outlet groove 222 and the welding area, reduce gas leakage, and reduce the obstruction of the welding area by the cover plate assembly 2.
[0041] In some embodiments, the vent plate 22 is provided with a plurality of vent grooves 222. The plurality of vent grooves 222 are arranged around the edge of the vent plate 22 in the circumferential direction.
[0042] By having multiple venting grooves 222 arranged around the edge of the venting plate 22, multiple areas of the thin plate component can be affected by the gas in the venting grooves 222, ensuring the uniformity of the surface temperature distribution of the thin plate component and reducing defects such as blasting and uneven welding during the welding process.
[0043] In some embodiments, such as Figure 2 As shown, the size of the air outlet plate 22 gradually decreases in the direction toward the fixture base 1 so as to form an arc-shaped area on the circumferential direction of the edge of the air outlet plate 22, and the air outlet groove 222 is located in the arc-shaped area.
[0044] By positioning the vent groove 222 within an arc-shaped area, the venting direction of the vent groove 222 forms a certain angle with the plane of the fixture base 1. Simultaneously, the vent groove 222 is located between the cover plate 21 and the fixture base 1, reducing external influences on the vent groove 222 and minimizing gas escape from it. Compared to the side-blowing method in conventional technologies, this embodiment utilizes the inclined vent groove 222 for venting, ensuring the gas's effect on the welding area and improving weld surface quality.
[0045] For example, the air outlet plate 22 is square, and four air outlet slots 222 are located on the edge of the air outlet plate 22, and four air inlets 221 are provided accordingly. The four air inlets 221 are connected to the corresponding air outlet slots 222.
[0046] In some embodiments, such as Figure 1 As shown, at least one fastener 211 is provided on the cover plate 21, and the fastener 211 is configured to press the cover plate assembly 2 onto the fixture base 1.
[0047] Fastener 211 can improve the clamping effect of cover plate assembly 2 on thin plate component and improve the flatness of thin plate component.
[0048] For example, the fastener 211 is a fastening bolt, and four fastening bolts are evenly distributed on the cover plate 21 to ensure the clamping effect and clamping uniformity, thereby ensuring the flatness of the thin plate component.
[0049] In some embodiments, the clamp base 1 includes a first contact surface near the cover plate assembly 2, the cover plate assembly 2 has a second contact surface near the clamp base 1, and a thin plate member is adapted to be disposed between the first contact surface and the second contact surface. The area of the first contact surface is larger than the area of the second contact surface.
[0050] By making the area of the first contact surface larger than the area of the second contact surface, the fixture base 1 can support the thin plate component while exposing the welding area on the thin plate component, making welding easier.
[0051] In some embodiments, the thin-plate component includes a water-cooled plate. The thickness of the water-cooled plate is less than or equal to 1 mm.
[0052] Currently, to achieve lightweight water-cooled plates, high requirements are placed on their thickness, and they need to maintain good sealing to prevent coolant leakage. During the welding process of water-cooled plates, the flatness of the plate and the heat generated during welding can easily lead to deformation, resulting in welding defects such as pinholes. This is especially true for water-cooled plates with a thickness of less than 1 mm, which are more significantly affected by flatness and thermal deformation. The thin-plate component welding fixture 10 provided in this application embodiment can, on the one hand, ensure the flatness of the water-cooled plate during the welding process through the cooperation of the fixture base 1 and the cover plate assembly 2, reducing the impact of water-cooled plate warping. On the other hand, the heating element 11 in the fixture base 1 can preheat the water-cooled plate and maintain the heating state during the welding process, improving the temperature uniformity throughout the water-cooled plate, reducing the impact of the heat-affected zone generated by welding, reducing thermal deformation, and ensuring good welding quality for water-cooled plates with a thickness of less than 1 mm.
[0053] Secondly, embodiments of this application also provide a thin-plate component welding system, including the thin-plate component welding fixture 10 as described above.
[0054] The thin-plate component system provided in this application embodiment has all the beneficial effects of the thin-plate component welding fixture 10 as described above, which will not be repeated here.
[0055] In some embodiments, such as Figure 3 As shown, the thin-plate component welding system also includes a laser 3 and a galvanometer 4. The laser 3 is used to emit laser light, which is then irradiated onto the area of the thin-plate component to be welded via the galvanometer 4.
[0056] For thin plate components, conventional metal plate connection methods such as brazing are not suitable. Laser welding can be achieved by using laser 3 and galvanometer 4, which can ensure welding quality while producing aesthetically pleasing and strong welds.
[0057] Specifically, the laser 3 can emit a laser beam. After the laser passes through the galvanometer 4, the position and direction of the laser beam can be controlled by adjusting the amplitude and frequency of the galvanometer 4, so that the laser beam swings along a predetermined trajectory and thus acts on the thin plate component to achieve laser welding.
[0058] Through the cooperation of laser 3 and galvanometer 4, high-precision positioning and scanning of the laser beam can be achieved, and galvanometer 4 has high scanning efficiency, ensuring high welding efficiency. Furthermore, the heat-affected zone of laser welding is small, and combined with the thin-plate component welding fixture 10 provided in this embodiment, thermal deformation during welding can be significantly reduced, thereby ensuring welding quality. Due to the high energy density and small focal point of the laser beam, the weld seam formed after welding is relatively smooth and even, reducing post-processing difficulty and improving the aesthetics of the weld seam.
[0059] For example, the galvanometer 4 includes two, which helps to achieve high precision and high flexibility, and improve welding efficiency and welding quality.
[0060] In some embodiments, such as Figure 3 As shown, the thin-plate component welding system also includes a field mirror 5, which is located at the output end of the galvanometer 4. The field mirror 5 can focus the laser beam after passing through the galvanometer 4, increasing the energy density of the laser beam, thereby enhancing the power of laser welding and ensuring weld quality. Simultaneously, the field mirror 5 can also change the direction of the laser beam according to welding requirements, enabling rapid scanning and positioning of the laser beam on the surface of the thin-plate component, thus improving welding efficiency.
[0061] In some embodiments, the laser 3 includes a continuous laser 3 or a quasi-continuous laser 3.
[0062] The continuous laser 3 enables better spot welding speed and positioning accuracy, ensuring weld aesthetics while reducing defects such as thermal deformation and bubbles. Especially in the welding of thin-plate components with high sealing requirements, such as water-cooled plates, the use of the continuous laser 3 ensures better welding results.
[0063] The quasi-continuous laser 3 emits a laser beam with higher energy density and penetration capability, thereby achieving deeper penetration during welding and reducing defects such as porosity, cracks, and spatter. Because the quasi-continuous laser 3 can act intermittently on thin-plate components, it can provide a certain cooling time during welding, making it suitable for welding thin-plate components and heat-sensitive materials.
[0064] It is understood that those skilled in the art can choose either the quasi-continuous laser 3 or the continuous laser 3 according to actual needs.
[0065] For example, the laser 3 may be a Raycus QCW150, QCW300 or QCW450 quasi-continuous laser 3, or a single-mode 14μm continuous laser 3.
[0066] like Figure 3 As shown, the laser beam emitted by the laser 3 passes through two galvanometers 4 in sequence, and then is focused by the field mirror 5. The focused laser beam acts on the thin plate component on the thin plate component welding fixture 10 to achieve laser welding of the thin plate component.
[0067] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A welding fixture for thin plate components, characterized in that, include: A clamp base, wherein a heating element is provided inside the clamp base, and the clamp base is used to support thin plate components; A cover plate assembly for pressing the sheet metal member onto the fixture base.
2. The welding fixture for thin-plate components according to claim 1, characterized in that, The cover plate assembly includes a cover plate and an air vent plate; The air outlet plate is provided with at least one air inlet and at least one air outlet groove, and the air outlet groove is adapted to discharge air toward the fixture base; The cover plate is located on the side of the vent plate opposite to the fixture base.
3. The welding fixture for thin plate components according to claim 2, characterized in that, The angle between the air outlet direction of the air outlet groove and the plane where the fixture base is located is 30°-60°.
4. The welding fixture for thin plate components according to claim 2, characterized in that, The air outlet plate is provided with multiple air outlet slots; Multiple air outlet slots are arranged around the edge of the air outlet plate in the circumferential direction.
5. The welding fixture for thin-plate components according to claim 1, characterized in that, The cover plate is provided with at least one fastener, which is configured to press the cover plate assembly onto the clamp base.
6. The welding fixture for thin-plate components according to claim 1, characterized in that, The clamp base includes a first contact surface near the cover plate assembly, the cover plate assembly has a second contact surface near the clamp base, and the thin plate member is adapted to be disposed between the first contact surface and the second contact surface; The area of the first contact surface is greater than the area of the second contact surface.
7. The welding fixture for thin-plate components according to any one of claims 1-6, characterized in that, The thin-plate component includes a water-cooled plate; The thickness of the water-cooled plate is less than or equal to 1 mm.
8. A welding system for thin-plate components, characterized in that, Including the thin plate component welding fixture as described in any one of claims 1-7.
9. The thin-plate component welding system according to claim 8, characterized in that, It also includes lasers and galvanometers; The laser is used to emit a laser beam, which is then directed through the galvanometer to the area of the thin-plate component to be welded.
10. The thin-plate component welding system according to claim 9, characterized in that, The laser includes a continuous laser or a quasi-continuous laser.