Application tool for welding water cooling plate through friction stir welding

Abstract

The utility model discloses an application tool for welding a water cooling plate by friction stir welding, which relates to the technical field of workpiece welding and comprises a tool plate for bearing a whole formed by the water cooling plate and a bottom plate in a lap joint state. And the mouth part is used for communicating a closed lap joint cavity formed between the water cooling plate and the bottom plate, so that the mouth part can vacuumize the lap joint cavity. The tool plate can effectively bear a combination body of the water cooling plate and the bottom plate, vacuumizing treatment is carried out on the lap joint cavity in a closed state in the combination body through the mouth part on the tool plate, the water cooling plate is in lap joint with the bottom plate in a vacuum adsorption mode, and the follow-up welding quality and efficiency are improved through lap joint in a uniform stress mode.

Description

Technical Field

[0001] This utility model relates to the field of workpiece welding technology, specifically to an application tooling for friction stir welding of water-cooled plates. Background Technology

[0002] When performing friction stir welding on two workpieces stacked vertically (overlapping), the stirring pin is constantly subjected to compression and thermal deformation from behind as it travels along the welding direction, which can easily cause bulging in the leading edge area. This bulging creates a cavity between the overlapping surfaces of the two workpieces. The presence of this cavity not only hinders the stirring pin from fully fusing the two layers of material, but may also cause material to be milled off by the shoulder of the stirring pin, resulting in the workpiece being scrapped.

[0003] Therefore, when using friction stir welding to weld an lapped base plate and a water-cooled plate (with the water-cooled plate positioned above the base plate), the conventional solution is to increase the clamping force between the water-cooled plate and the base plate to ensure a tight fit. Furthermore, when dealing with water-cooled plates with complex flow channel structures and large dimensions, multiple clamping plates or blocks are typically used to clamp both sides of the area to be welded and both sides of the middle weld bead on the water-cooled plate. After clamping, the welding sequence usually follows a "from inside to outside, longer to shorter" method.

[0004] However, even with the aforementioned method of using clamping blocks to press the water-cooled plate against the base plate and adjusting the welding sequence, the required clamping force on the overlapping surfaces is extremely high due to the water-cooled plate's very high requirements for welding precision. Using clamping blocks may lead to unstable welding quality due to uneven pressure distribution. Furthermore, simply increasing the number of clamping blocks to increase the clamping force not only increases welding costs, but also results in excessive space consumption, potentially causing positional interference with subsequent welding operations and affecting welding efficiency and quality.

[0005] Therefore, how to optimize the clamping method and reduce space occupation while ensuring high-precision welding requirements has become a key issue that needs to be further addressed in the friction stir welding process. Utility Model Content

[0006] The purpose of this utility model is to solve the problems in the prior art by proposing an application tooling for friction stir welding of water-cooled plates. This application tooling has a nozzle on it, which can perform vacuum treatment on the overlapping cavity formed between the water-cooled plate and the base plate, and achieve uniform connection between the water-cooled plate and the base plate by vacuum adsorption and pressing.

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A tooling for friction stir welding of water-cooled plates includes a tooling plate for supporting the water-cooled plate and the base plate in an overlapping state. The tooling plate has a nozzle for communicating the sealed overlapping cavity formed between the water-cooled plate and the base plate, so that the nozzle can perform vacuum treatment on the overlapping cavity.

[0009] As a further embodiment of this utility model: a sealing element is provided on one side of the tooling plate used to support the whole, and the sealing element is arranged in a closed loop so that when the base plate is placed on the surface of the tooling plate, a sealed cavity is formed in the area between the base plate and the tooling plate located within the sealing element. A through hole is provided in the area of ​​the tooling plate located within the sealing element so that the through hole is connected to the formed sealed cavity.

[0010] As a further embodiment of this utility model, the tooling plate is provided with a receiving groove for accommodating the sealing element.

[0011] As a further embodiment of this invention, the sealing element is a sealing ring.

[0012] As a further embodiment of this utility model: a first vacuum valve is provided on the tooling plate, and the first vacuum valve is connected to the nozzle.

[0013] As a further embodiment of this utility model: a second vacuum valve is provided on the tooling plate, and the second vacuum valve is connected to the through hole.

[0014] As a further embodiment of this utility model, the tooling also includes a clamping member disposed on the tooling plate, the clamping member being used to apply a pressing force to the water-cooled plate toward the base plate.

[0015] As a further embodiment of this utility model: the clamping component includes a plurality of clamping blocks evenly distributed on the tooling plate, and the plurality of clamping blocks are located on the periphery of the water-cooling plate and exert a pressing force on it toward the base plate.

[0016] As a further embodiment of this utility model: the tooling plate is provided with threaded holes that are opposite to the mounting holes on the water-cooling plate and the base plate, and the mounting holes can be connected to the threaded holes by bolts.

[0017] As a further embodiment of this utility model: the tooling plate is provided with a plurality of positioning posts, and the plurality of positioning posts surround a positioning area for positioning the base plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The tooling plate can effectively support the combination of water-cooled plate and base plate, and the nozzle on it can perform vacuum treatment on the sealed overlapping cavity in the combination, so that the water-cooled plate overlaps on the base plate in the form of vacuum adsorption. This kind of overlapping with uniform force improves the quality and efficiency of subsequent welding.

[0020] 2. Through the design of the sealing components and through holes, the base plate and the tooling plate can also be connected by vacuum adsorption, which improves the stability of the combination of water-cooled plate and base plate on the tooling plate and further enhances the reliability and consistency of welding.

[0021] 3. By designing a receiving groove to accommodate the seal, the installation of the seal becomes more stable and convenient, and it can also be disassembled and replaced later, which improves the overall stability and service life of the tooling.

[0022] 4. The sealing element is designed as a sealing ring, which simplifies the structure of the sealing element and improves the sealing effect, making the tooling more convenient and efficient to use;

[0023] 5. By setting the first vacuum valve to connect with the nozzle, the vacuuming operation is made more convenient and controllable, further improving the airtightness and welding quality during the welding process.

[0024] 6. By setting a second vacuum valve connected to the through hole, the vacuum control capability of the sealed cavity is enhanced, ensuring more thorough gas removal during the welding process and improving the welding effect;

[0025] 7. By setting up clamping components, especially the design of multiple clamping blocks, pressure can be applied evenly to the water-cooled plate, ensuring its stability during welding, avoiding deformation, and improving welding accuracy.

[0026] 8. By designing the corresponding connection between the threaded holes and the assembly holes, the installation of the water-cooled plate and the base plate on the tooling plate is more stable and precise, and the sealing operation is more convenient, thereby improving the assembly efficiency and welding quality of the tooling.

[0027] 9. By setting multiple positioning posts to form a positioning area, the position of the base plate is ensured to be accurate during the welding process, avoiding displacement, thereby improving the precision and consistency of welding. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a three-dimensional structural diagram of the water-cooled plate and the base plate of this utility model placed on the tooling plate;

[0030] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0031] Figure 3 yes Figure 1 A three-dimensional structural diagram showing the removal of the water-cooling plate under certain conditions;

[0032] Figure 4 yes Figure 3 Enlarged structural diagram at point B;

[0033] Figure 5 yes Figure 3 A schematic diagram of the three-dimensional structure after removing the base plate in the current state;

[0034] Figure 6 yes Figure 5 Enlarged structural diagram at point C;

[0035] Figure 7 yes Figure 5 A three-dimensional structural diagram showing the removal of the seal in the current state;

[0036] Figure 8 yes Figure 7 Enlarged structural diagram at point D;

[0037] Figure 9 This is a schematic diagram of the three-dimensional structure of the water-cooled plate in this utility model;

[0038] Figure 10 This is a three-dimensional structural diagram of the sealing element in this utility model.

[0039] In the diagram: 1. Tooling plate; 101. Nozzle; 102. Through hole; 103. Receiving groove; 104. First vacuum valve; 105. Second vacuum valve; 2. Seal; 3. Threaded hole; 4. Pressure block; 5. Positioning post; a. Water-cooled plate; b. Base plate; c. Assembly hole. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] like Figures 1-10 As shown, before welding the water-cooled plate a and the base plate b, the water-cooled plate a needs to be overlapped on the base plate b, and the two together form a whole to be welded. Based on this, an application tooling for friction stir welding of water-cooled plates includes a tooling plate 1 for supporting the above-mentioned whole.

[0042] To ensure a uniform and effective contact between the overlapping water-cooled plate a and the base plate b, a sealed cavity is formed between them. A nozzle 101 is provided on the tooling plate 1, which is connected to the cavity. A first vacuum valve 104 is also provided on the tooling plate 1 and is connected to the nozzle 101. Therefore, before welding, the entire assembly of the water-cooled plate a and the base plate b is placed on the tooling plate 1 in the following manner: the base plate b is supported by the tooling plate 1, the water-cooled plate a overlaps the base plate b, and the nozzle 101 on the tooling plate 1 is connected to the sealed cavity. Then, by using the first vacuum valve 104 and the nozzle 101 to evacuate the overlapping cavity, the upper water-cooled plate a is firmly and evenly adsorbed onto the lower base plate b, achieving uniform contact between the water-cooled plate a and the base plate b, which facilitates the normal progress of subsequent welding work. Compared with the existing technology that simply uses pressure blocks to press the water-cooled plate a and the base plate b, the vacuum adsorption method adopted in this application can make the force between the water-cooled plate a and the base plate b uniform and stable, without occupying more space, and improving the welding efficiency and quality of the product.

[0043] To achieve a sealed overlapping cavity between the water-cooled plate a and the base plate b, this application prioritizes welding the outer ring portions of both plates during the welding process, followed by welding the unsealed weld bead portions. This welding method not only achieves a preliminary connection between the base plate b and the water-cooled plate a, but also allows the aforementioned overlapping cavity to be formed in the middle. It should be noted that due to differences in the construction of different water-cooled plate a and base plate b products, the resulting overlapping cavity structure will vary. Specifically, the water-cooled plate a and base plate b shown in this application each have two rows of mounting holes c in their middle positions due to their product characteristics. If the water-cooled plate a and base plate b are initially welded without any sealing treatment, several mounting holes c will be accommodated within the overlapping cavity. Consequently, the presence of the mounting holes c will result in a non-sealed overlapping cavity, making subsequent vacuuming treatment by the nozzle 101 impossible. Based on this, this application, according to the inherent product characteristics of the water-cooled plate a... Figure 9 The product features shown include the presence of two rows of assembly holes c. The assembly holes c are sealed before welding, so that the overlapping cavity formed by subsequent welding is in a closed state.

[0044] like Figures 1-8 As shown, in order to ensure that the whole formed by the water-cooled plate a and the base plate b is stably supported on the tooling plate 1, a receiving groove 103 is provided on the side of the tooling plate 1 used to support the whole, based on the fact that the water-cooled plate a is vacuum-adsorbed onto the base plate b. The shape of the receiving groove 103 is set according to the welding direction of the water-cooled plate a. Figure 7The shape of the receiving groove 103 is adapted to the shape characteristics of the water-cooled plate a. A sealing element 2 (which can be a sealing ring) is provided inside the receiving groove 103 according to its shape. Figure 10 As shown, the seal 2 is arranged in a closed loop, and the state in which the seal 2 is placed on the receiving groove 103 can be determined by... Figure 5 To illustrate, when the base plate b is placed on the surface of the tooling plate 1, a sealed cavity is formed between the base plate b and the tooling plate 1 within the sealing element 2. A through hole 102 is provided on the tooling plate 1 within the sealing element 2, and the through hole 102 communicates with the formed sealed cavity. A second vacuum valve 105 is provided on the tooling plate 1, and the second vacuum valve 105 is connected to the through hole 102. Subsequently, the sealed cavity can be evacuated using the second vacuum valve 105 and the through hole 102, achieving uniform contact between the base plate b and the tooling plate 1, thus ensuring that the entire structure formed by the water-cooled plate a and the base plate b is uniformly stressed and supported on the tooling plate 1.

[0045] It should be noted that, based on the structural characteristics of the water-cooled plate a and the base plate b shown in this application, that is, with two rows of mounting holes c on both the water-cooled plate a and the base plate b, in order to make the whole formed by the water-cooled plate a and the base plate b more stable on the tooling plate 1, this application also provides threaded holes 3 on the tooling plate 1 corresponding to the positions of the two rows of mounting holes c. After the whole formed by the water-cooled plate a and the base plate b is placed in the designated position on the tooling plate 1, one end of the bolt can be passed through the mounting holes c on the water-cooled plate a and the base plate b from top to bottom until the end of the bolt is installed in the threaded hole 3 on the tooling plate 1, thereby achieving a stable connection of the whole. If the mounting holes c need to be sealed, the component to be sealed can be a sealing gasket, which can be fitted onto the bolt to achieve the sealing of the mounting holes c. It should be noted that, based on the threaded holes 3 on the tooling plate 1, the groove shape of the accommodating groove 103 needs to avoid the threaded holes 3. Figure 7 The image shows a case where the shape of the receiving groove 103 is the same as the installation shape of the seal 2.

[0046] Furthermore, during the process of placing the entire assembly on the tooling plate 1, in order to make the assembly hole c on the assembly align with the threaded hole 3 on the tooling plate 1, this application provides a plurality of positioning posts 5 on the tooling plate 1. The plurality of positioning posts 5 surround a positioning area for positioning the base plate b. Therefore, during the process of placing the base plate b on the tooling plate 1, the base plate b can be placed directly in the positioning area to achieve the specified position of the entire assembly on the tooling plate 1.

[0047] like Figures 1-2As shown, based on the method of fixing the water-cooled plate a and the base plate b together by means of a sealed cavity, a clamping component for pressing the above-mentioned whole can be added to the tooling plate 1. The clamping component includes a plurality of pressure blocks 4 evenly distributed on the tooling plate 1, and the plurality of pressure blocks 4 are located on the periphery of the water-cooled plate a and apply a pressing action towards the base plate b. The pressing action of the pressure blocks 4 can be manually operated or automatically driven by components such as cylinders. This paper does not limit this to either.

[0048] Based on the configuration of the above components, the final working process of this application is as follows:

[0049] First, place the base plate b in the corresponding position on the tooling plate 1, and then place the water-cooled plate a in the corresponding position on the base plate b. Use bolts with sealing washers and multiple pressure blocks 4 to limit the overall structure formed by the water-cooled plate a and the base plate b on the tooling plate 1. Under the action of the sealing element 2, a sealed cavity is formed between the base plate b and the tooling plate 1. Then, open the second vacuum valve 105 to perform vacuum treatment on the sealed cavity, so as to achieve uniform abutment and adhesion of the base plate b on the tooling plate 1. After adhesion, weld the outer ring part of the two plates first, and then weld the unsealed weld part of the two plates to make the two plates completely sealed. The cavity generated by the sealing of the two plates at this time is the overlapping cavity. After the above steps are completed, the overlapping cavity is evacuated using the first vacuum valve 104 and the nozzle 101, which allows the upper water-cooled plate a to be firmly and evenly adsorbed onto the lower base plate b, achieving uniform contact between the water-cooled plate a and the base plate b. Subsequently, the internal weld bead portions of the two plates are welded until the welding is complete, at which point both vacuum valves are closed. During the welding process, all weld bead keyholes are left at the center of the entire circular trajectory by welding an arc trajectory at the end point.

[0050] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An application tool for friction stir welding a water-cooled plate, characterized by, The application discloses a tooling plate (1) for carrying a whole formed by a water-cooling plate (a) in a lap state and a bottom plate (b), a mouth (101) is formed on the tooling plate (1), and the mouth (101) is used for communicating a lap cavity formed in a closed state between the water-cooling plate (a) and the bottom plate (b), so that the mouth (101) can perform vacuumizing treatment on the lap cavity.

2. A tool for friction stir welding a water-cooled plate according to claim 1, wherein A sealing member (2) is arranged on a surface of the tooling plate (1) for carrying the whole, the sealing member (2) is arranged in a closed loop, so that when the bottom plate (b) is arranged on the surface of the tooling plate (1), a closed cavity is formed between the bottom plate (b) and the tooling plate (1) in an area in the sealing member (2), a through hole (102) is formed on the tooling plate (1) in the area in the sealing member (2), so that the through hole (102) is communicated with the closed cavity.

3. A tool for friction stir welding a water-cooled plate according to claim 2, wherein The tooling plate (1) is provided with a containing groove (103) for containing the sealing member (2).

4. The application tool for friction stir welding a water-cooled plate according to claim 2 or 3, characterized by, The sealing member (2) is a sealing ring.

5. A tool for friction stir welding a water-cooled plate according to any one of claims 1 to 3, wherein The tooling plate (1) is provided with a first vacuum valve (104), and the first vacuum valve (104) is communicated with the mouth (101).

6. The application of a tool for friction stir welding a water-cooled plate according to claim 2 or 3, characterized in that, The tooling plate (1) is provided with a second vacuum valve (105), and the second vacuum valve (105) is communicated with the through hole (102).

7. A tool for friction stir welding a water-cooled plate according to any one of claims 1-3, characterized in that, The tooling plate further comprises a pressing member arranged on the tooling plate (1), and the pressing member is used for pressing the water-cooling plate (a) towards the bottom plate (b).

8. A tool for friction stir welding a water-cooled plate according to any one of claims 1-3, characterized in that, The tooling plate (1) is provided with a threaded hole (3) opposite to a mounting hole (c) of the water-cooling plate (a) and the bottom plate (b), and the mounting hole (c) is connected with the threaded hole (3) through a bolt.

9. A tool for friction stir welding a water-cooled plate according to any one of claims 1-3, characterized in that, The tooling plate (1) is provided with a plurality of positioning columns (5), and the plurality of positioning columns (5) are arranged to form a positioning area for positioning the bottom plate (b).

10. The application of a tool for friction stir welding a water-cooled plate according to claim 7, characterized in that, The pressing member comprises a plurality of pressing blocks (4) arranged on the tooling plate (1), and the plurality of pressing blocks (4) are arranged at the periphery of the water-cooling plate (a) and are used for pressing the water-cooling plate (a) towards the bottom plate (b).

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