Welding tool capable of preventing welding deformation

Abstract

The utility model provides a welding tool capable of preventing welding deformation. The welding tool comprises a bottom plate; the bearing plate is arranged on the bottom plate and used for bearing a workpiece to be welded, and the side face, facing the bottom plate, of the bearing plate is upwards provided with a concave part; the preheating part is arranged in the concave part, is attached to the inner wall of the concave part and is used for transmitting generated heat energy to the bearing plate; and the heat insulation plate is fixedly arranged on the side face, facing the bottom plate, of the bearing plate, and seals the preheating piece in the sunken part. The preheating part is arranged to preheat and process the workpiece to be welded, so that the temperature difference of the workpiece during welding is reduced, the deformation of the workpiece caused by high temperature and internal stress after welding is avoided, and particularly, the deformation of the sheet-shaped or plate-shaped first workpiece is avoided; therefore, the use performance and the welding yield of a welding product are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding tool capable of preventing welding deformation. Background Art

[0002] In the process of mechanical processing, welding is the most common mechanical processing technology, which combines two workpieces with each other through high temperature or high pressure. In the welding process, the workpiece is usually partially heated to form a molten pool, and then the two parts are butted against each other. After the molten pool cools, the two workpieces can be firmly connected.

[0003] Since the welding process heats the workpieces mutually, the workpieces are prone to deformation during the heating process, especially when a continuous frame is welded on a first workpiece such as a thin, sheet-shaped, or plate-shaped workpiece, the deformation is more serious. Specifically, when welding the first workpiece and the second workpiece of the frame structure, the high temperature generated during welding can easily cause the first workpiece to be convex or concave due to heat deformation in the part within the frame range, thereby causing the first workpiece to deform and unable to maintain a flat state, seriously reducing the yield and performance of the welded product.

[0004] Therefore, there is an urgent need for a welding tool that can prevent deformation during welding. Utility Model Content

[0005] The utility model aims to provide a welding tool for preventing welding deformation, which can avoid workpiece deformation during welding of two workpieces, ensure the flatness of the surface of the welding product, and ensure the use performance and yield rate of the welding product.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A welding tool for preventing welding deformation, comprising:

[0008] Base plate;

[0009] A bearing plate, which is arranged on the bottom plate and is used to bear the workpiece to be welded, and a concave portion is formed on the side of the bearing plate facing the bottom plate;

[0010] A preheating element, which is installed in the recessed portion and is in contact with the inner wall of the recessed portion, and is used to transfer the generated heat energy to the carrying plate;

[0011] A heat insulation board is fixedly mounted on the side of the supporting plate facing the bottom plate and seals the preheating element within the recessed portion.

[0012] Furthermore, the recessed portion includes at least one mounting groove, and the preheating element is installed in the mounting groove in a sheet shape.

[0013] Furthermore, the recessed portion includes at least one mounting groove, and the preheating element includes at least one heating tube corresponding to the mounting groove.

[0014] Furthermore, the installation groove is evenly arranged on the supporting plate in a continuous curve shape, and the preheating element is installed in the installation groove in a manner adapted to the curved track of the installation groove.

[0015] Furthermore, the carrier plate is provided with positioning components on at least two opposite side edges, and the positioning components are used to limit the workpieces to be welded loaded onto the carrier plate from moving in a direction perpendicular to the plane of the carrier plate.

[0016] Furthermore, the positioning assembly includes a positioning block slidably connected to the bearing plate, and a limiting notch adapted to the thickness of the workpiece to be welded is provided on the surface of the positioning block corresponding to the bearing plate.

[0017] Furthermore, the positioning block includes a sliding surface that is in sliding contact with the bearing plate, the sliding surface is formed with a sliding portion that is slidably connected to the bearing plate, a descending step is arranged on the sliding surface, and the descending step and the surface of the bearing plate constitute the limiting notch.

[0018] The beneficial effects produced by the utility model are as follows:

[0019] The embodiment of the utility model provides a preheating element on the lower side of the carrying plate, so that the workpiece to be welded can be preheated after being placed on the carrying plate, thereby reducing the temperature difference of the workpiece during welding, avoiding deformation of the workpiece due to high temperature and internal stress after welding, especially avoiding deformation of the first workpiece in the form of a sheet or plate, which may affect the performance of the welding product and the welding yield.

[0020] Secondly, the utility model can position the workpiece to be welded by providing a positioning assembly, which can prevent the first workpiece placed on the supporting plate from being displaced vertically, and will not limit the extension and expansion of the first workpiece after preheating, thereby ensuring that the first workpiece has sufficient extension space, further ensuring the flatness of the first workpiece. At the same time, the positioning assembly ensures that the workpiece will not move vertically during the welding process, avoiding fluctuations in the first workpiece and affecting the surface flatness of the welded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0022] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0023] Figure 3 This is a schematic diagram of the explosion structure of Example 1 of the utility model.

[0024] Figure 4 This is a schematic diagram of the explosion structure of Example 2 of the utility model.

[0025] Figure 5 It is a structural schematic diagram of the positioning block in the utility model.

[0026] In the figure: 100, bottom plate; 200, bearing plate; 201, recessed portion; 210, heat insulation plate; 300, preheating member; 400, positioning assembly; 410, sliding block; 411, limiting notch; 401, sliding surface; 402, sliding portion; 403, sliding step. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0028] like Figure 1-5 As shown, an embodiment of the utility model provides a welding tool that can prevent welding deformation during the welding process of the workpiece, especially when it is used to weld a second workpiece of a frame structure on a thin, sheet-shaped, plate-shaped first workpiece, it prevents the first workpiece from being deformed, thereby ensuring the performance and yield rate of the welding product.

[0029] The utility model provides a welding tool for preventing welding deformation, such as Figure 1-3As shown, it includes a base plate 100 used as a support, and a carrier plate 200 for carrying a first workpiece to be welded is arranged on the base plate 100. The carrier plate 200 is made of a heat-conducting material. In the present embodiment, the carrier plate 200 is made of a metal material, and has sufficient strength while ensuring heat conductivity to ensure a sufficient service life. At the same time, a recessed portion 201 recessed inwardly is provided on the side of the carrier plate 200 facing the base plate, and a preheating member 300 capable of emitting heat energy is installed therein. The surface of the preheating member 300 and the inner wall of the recessed portion 201 are in contact with each other, so that the preheating member 300 and the carrier plate 200 are in close contact. The preheating member 300 is connected to an external power source through a wire, and emits heat when electric energy is supplied, so that the heat can be transferred to the carrier plate 200, and the workpiece to be welded located on the carrier plate 200 is preheated through conduction of the carrier plate 200. A heat insulating plate 210 is also fixedly mounted on the carrier plate 200 to seal the recess 201, thereby sealing the preheating element 300 within the recess 201, thereby avoiding the loss and waste of heat generated by the preheating element 300 and preventing burns caused by heating other components due to heat transfer.

[0030] During the welding process, a first workpiece in the form of a thin sheet or plate is placed on the carrier plate 200, and the preheating member 300 transfers heat energy to the first workpiece through the carrier plate 200, and preheats the first workpiece before welding, so that the temperature of the first workpiece is increased to reduce the temperature difference between the welded workpieces. This can prevent the part of the first workpiece located within the frame from being deformed due to the heat caused by the internal stress after welding, resulting in the first workpiece being convex or concave as a whole, thereby ensuring the yield rate of the performance of the welding product.

[0031] In this embodiment, a positioning assembly 400 for positioning the first workpiece to be welded is also provided on the carrier plate 200. The positioning assembly 400 is used to limit the first workpiece to be welded from moving in a direction perpendicular to the plane of the carrier plate 200. It is understandable that when the workpiece is welded, the first workpiece moves or jumps vertically, which will cause the surface of the sheet or plate-shaped first workpiece to fluctuate. After welding with the second workpiece of the frame structure, the surface of the welded product, especially the surface of the first workpiece, is likely to be convex or concave, affecting the performance of the welded product. Figure 1-2As shown, in this embodiment, the positioning components 400 are provided with two corresponding groups, which are respectively arranged on two corresponding side edges of the carrier plate 200. The first workpiece placed on the carrier plate 200 can be positioned by the two groups of positioning components 400. The symmetrical positioning method can make the first workpiece to be processed more stable. It can be imagined that four groups of positioning components can be provided, and they can be respectively provided at the four edges of the carrier plate. Similarly, multiple groups of positioning components can be provided and evenly arranged at the four edges of the carrier plate.

[0032] During the process of preheating the first workpiece by the heating assembly, since the first workpiece is in the form of a sheet or a plate, it is easy to expand in size after being heated. Since the first workpiece is in the form of a sheet or a plate, it is easy to expand in a small size after being heated, so that the overall size of the first workpiece increases. Therefore, the positioning assembly 400 is slidably connected to the carrier plate 200. For details, please refer to Figure 1-2 As shown in Figure 5, the positioning assembly 400 includes a positioning block 410 slidably connected to the carrier plate 200, and a limiting notch 410 matched with the thickness of the workpiece to be welded is arranged on the surface of the positioning block 410 corresponding to the carrier plate 200, so that after the workpiece to be welded is placed on the carrier plate 200, the workpiece to be welded can be accommodated in the limiting notch 410 and pressed to prevent the workpiece to be welded from moving vertically. It is worth noting that after the positioning block 410 in this embodiment clamps and positions the workpiece to be welded, since the positioning block 410 is slidably connected to the carrier plate 200, when the workpiece to be welded expands after being heated and causes the size to increase, the positioning block 410 can be pushed to provide sufficient space for the workpiece to be welded to expand and increase in size, thereby avoiding the situation of bulging in the vertical direction caused by the horizontal restriction of the first workpiece due to the spraying, thereby further ensuring the flatness of the first workpiece.

[0033] In this embodiment, Figure 5 The specific structure of the positioning block 410 is that the positioning block 410 has a sliding surface 401 that is in sliding contact with the supporting plate 200, and a sliding portion 402 that is slidably connected to the supporting plate 200 is formed on the sliding surface 401. In the present embodiment, the sliding portion 402 is a slider with a dovetail structure, and accordingly, a dovetail groove that can be slidably connected to the slider is also provided on the supporting plate 200. At the same time, in other embodiments, the sliding portion 402 can also be a slider of other shapes, and a sliding groove compatible with it is provided on the supporting plate 200. A descending step 403 is also provided on the sliding surface 401. After the positioning block 410 is slidably connected to the supporting plate 200, the descending step 403 and the surface of the supporting plate 200 constitute a limiting notch 410 for positioning the workpiece to be welded.

[0034] The present embodiment provides a welding tool for preventing welding deformation. During the welding process of a thin, sheet-like or plate-like first workpiece and a second workpiece in a frame structure, the first workpiece can be preheated and positioned at the same time. The positioning component 400 can also ensure that the first workpiece has a certain extension space after expansion after preheating, thereby preventing the first workpiece from being deformed due to a temperature difference during welding between the first workpiece and the second workpiece, ensuring the flatness of the first workpiece after welding is completed, and ensuring the performance and yield rate of the welding product. Embodiment 1

[0035] In this embodiment, a specific example is given of the structure and installation method of the preheating element 300a. Figure 2-3 As shown, the recessed portion 201a is a mounting groove opened on the side of the carrier plate 200 facing the bottom plate, the mounting groove is square, and the preheating element 300a is installed in the mounting groove in the form of a sheet. In this embodiment, the preheating element 300a can be a graphene heating sheet, or a resistance heating sheet, etc., which is not limited in this embodiment. The heating sheet can be bonded to the inner wall of the mounting groove by a thermally conductive adhesive, so that it can be in tight contact with the carrier plate 200. In this embodiment, the number of mounting grooves can also be multiple, evenly arranged on the surface of the carrier plate, and accordingly, one or more heating sheets are installed in each mounting groove. Embodiment 2

[0036] In this embodiment, the tooling structure is basically the same as the above, and only another specific example of the structure and installation method of the preheating unit 300b is given, such as Figure 4 As shown, the recessed portion 201b includes at least one mounting groove, and the preheating element 300b is at least one heating pipe corresponding to the mounting groove. The heating pipe coil is arranged in the mounting groove and fixedly installed in the mounting groove by heat-conducting glue.

[0037] In a further improved technical solution, the shape of the mounting groove is a continuous curve, and is evenly arranged on the supporting plate 200. Figure 4 As shown, in this embodiment, the mounting groove is a continuously bent long strip groove, and the heating pipe is installed inside it along the formed curved track, so that the heat can be evenly transferred to the supporting plate 200 above.

[0038] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A welding tool for preventing welding deformation, characterized in that: Included are: Base plate; A bearing plate, which is arranged on the bottom plate and is used to bear the workpiece to be welded, and a concave portion is formed on the side of the bearing plate facing the bottom plate; A preheating element, which is installed in the recessed portion and is in contact with the inner wall of the recessed portion, and is used to transfer the generated heat energy to the carrying plate; A heat insulation board is fixedly mounted on the side of the supporting plate facing the bottom plate and seals the preheating element within the recessed portion.

2. A welding tool for preventing welding deformation according to claim 1, characterized in that: The recessed portion includes at least one mounting groove, and the preheating element is installed in the mounting groove in a sheet shape.

3. The welding tool for preventing welding deformation according to claim 1, characterized in that: The recessed portion includes at least one mounting groove, and the preheating element includes at least one heating tube corresponding to the mounting groove.

4. A welding tool for preventing welding deformation according to claim 3, characterized in that: The installation groove is evenly arranged on the supporting plate in a continuous curve shape, and the preheating element is installed in the installation groove in a manner adapted to the curved track of the installation groove.

5. The welding tool for preventing welding deformation according to claim 1, characterized in that: The carrier plate is provided with positioning components on at least two opposite side edges, and the positioning components are used to limit the workpieces to be welded loaded onto the carrier plate from moving in a direction perpendicular to the plane of the carrier plate.

6. A welding tool for preventing welding deformation according to claim 5, characterized in that: The positioning assembly comprises a positioning block slidably connected to the bearing plate, and a limiting notch matching the thickness of the workpiece to be welded is provided on the surface of the positioning block corresponding to the bearing plate.

7. A welding tool for preventing welding deformation according to claim 6, characterized in that: The positioning block includes a sliding surface that is in sliding contact with the bearing plate, the sliding surface is formed with a sliding portion that is slidably connected to the bearing plate, a descending step is arranged on the sliding surface, and the descending step and the surface of the bearing plate form the limiting notch.

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