Auxiliary welding device for long-strip-shaped products

Abstract

The utility model relates to the technical field of welding auxiliary tools, in particular to a long strip type product welding auxiliary device which comprises cooling structures and a parallel supporting mechanism capable of ascending and descending, and the upper portion and the lower portion of the parallel supporting mechanism are both connected with the cooling structures. The cooling structure comprises strip-shaped water cooling copper and a strip-shaped bottom plate, the water cooling copper is of a cavity-shaped structure, the bottom plate is connected with the upper portion of the parallel supporting part, and the water cooling copper is connected with the upper portion of the bottom plate; a groove with an outward opening is formed in the side face of the side, facing the weld joint, of the water-cooling copper along the center line. The technical scheme recorded by the utility model is suitable for assembling and welding long-strip workpieces, and particularly has a remarkable effect in the application that groove-shaped plates are butt-welded into square tubes; the auxiliary device can be rapidly cooled, and stress deformation is avoided.

Description

Technical field:

[0001] The utility model relates to the technical field of welding auxiliary tooling, in particular to a welding auxiliary device for long strip products. Background technology:

[0002] Many square tubes in existing mechanical parts are made by butt welding two grooved plates. A feature of this type of parts is that they are long and inconvenient to weld inside, so a single-sided welding and double-sided forming welding method is required.

[0003] Due to the high heat of welding, the local temperature rise of the welded parts is generally too high, which will cause stress deformation. The long length of the slot plate welded square tube will amplify this deformation and even make the square tube unusable. Due to the good thermal conductivity of copper, water-cooled copper is used in many fields for cooling. The cooling effect is good and can greatly alleviate thermal damage. However, there is no public solution on how to tightly attach the water-cooled copper to the inner wall of the long slot plate welded square tube, and how to prevent the outer wall of the water-cooled copper from being damaged by the single-sided welding and double-sided forming welding process. Utility model content:

[0004] In order to solve the above problems and overcome the shortcomings of the prior art, the utility model intends to provide a welding auxiliary device for long strip products that can prevent the welding parts from deforming.

[0005] To achieve the above-mentioned purpose, the utility model provides a welding auxiliary device for long strip products, including a cooling structure and a parallel support mechanism that can be raised and lowered, the upper and lower parts of the parallel support mechanism are connected to the cooling structure; the cooling structure includes a strip of water-cooled copper and a strip bottom plate, the water-cooled copper is a cavity-shaped structure, the bottom plate is connected to the upper part of the parallel support part, and the water-cooled copper is connected to the upper part of the bottom plate; the side of the water-cooled copper facing the weld to be welded is provided with a groove opening outward along the center line.

[0006] Furthermore, the parallel support mechanism includes a preset number of scissor-type support frames arranged in parallel along a straight line, and the scissor-type support frames are connected in series through a linkage rod, and the head and tail ends of the linkage rod are respectively connected to the screw ends of adjacent scissor-type support frames; the end of the screw of the outermost scissor-type support frame that is not connected to the linkage rod is connected to a turning handle.

[0007] Furthermore, the rotating handle is an annular structure, so as to facilitate the insertion of an auxiliary rotating tool and increase the torque to achieve the purpose of labor saving.

[0008] Furthermore, the water-cooled copper inner cavity is a closed inner cavity, and the closed inner cavity is fully filled with refrigerant.

[0009] Furthermore, the water-cooled copper inner cavity can also be set as a connected inner cavity, and the connected inner cavity is connected to an external refrigerant circulation device through a pipeline provided with a valve.

[0010] The beneficial effects of the utility model are as follows: the utility model provides an auxiliary device for welding long-strip workpieces, especially an auxiliary device for welding slotted plates to square tubes; the auxiliary device is effective in the application of slotted plates to square tubes, and can quickly cool down and avoid stress deformation. The scissor-type support frame can be retracted, and the auxiliary device can be conveniently placed in and taken out of the inner cavity of the slotted plate-welded square tube; more importantly, the design of the groove meets the welding process requirements of single-sided welding and double-sided forming. During welding, the groove is directly opposite to the weld, and the water-cooled copper quickly cools down the area around the weld through heat transfer, but does not contact the weld, and thus the water-cooled copper will not adhere to the inner wall of the slotted plate-welded square tube. Description of the drawings:

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a main structural schematic diagram of the utility model;

[0013] In the attached figure: 1. scissor-type support frame, 2. linkage rod, 3. base plate, 4. turning handle, 5. water-cooled copper, 6. groove. Specific implementation method:

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in more detail below in conjunction with the accompanying drawings of the present invention.

[0015] In the description of the present invention, it should be understood that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] As attached Figure 1 and 2As shown, in order to achieve the above-mentioned purpose, the utility model provides a welding auxiliary device for long strip products, including a cooling structure and a parallel support mechanism that can be raised and lowered, and the upper and lower parts of the parallel support mechanism are connected to the cooling structure; the cooling structure includes a strip-shaped water-cooled copper 5 and a strip-shaped bottom plate 3, the water-cooled copper 5 is a cavity-shaped structure, the bottom plate 3 is connected to the upper part of the parallel support part, and the water-cooled copper 5 is connected to the upper part of the bottom plate 3; the side of the water-cooled copper 5 facing the weld to be welded is provided with a groove 6 opening outward along the center line.

[0018] This auxiliary device is suitable for welding long strip products. In order to fully contact with the parts to be welded, a parallel support mechanism is adopted. When the parallel support mechanism is supported, the lifting heights of the two ends and the middle are the same. The cooling structure connected to the upper and lower parts of the parallel support mechanism will not have the phenomenon of one end being higher than the other end. It can fully contact with the parts to be welded, ensuring the cooling efficiency.

[0019] In order to reduce the number of clamping times, the upper and lower parts of the parallel support mechanism are connected to a cooling structure, and one clamping can be used for two-sided welding. The side of the water-cooled copper 5 facing the weld to be welded is provided with a groove 6 with an opening facing outward along the center line. The design of the groove 6 perfectly solves the problem that the water-cooled copper 5 must be in close contact with the workpiece to be welded but cannot be adhered to the workpiece to be welded. The groove 6 is below the weld, and the water-cooled copper 5 does not contact the weld, but it does not affect the rapid cooling of the water-cooled copper 5 on both sides of the weld.

[0020] The parallel support mechanism includes a preset number of scissor-type support frames 1 arranged in parallel along a straight line, and the scissor-type support frames 1 are connected in series through a linkage rod 2, and the head and tail ends of the linkage rod 2 are respectively connected to the screw ends of the adjacent scissor-type support frames 1; the end of the screw of the outermost scissor-type support frame 1 that is not connected to the linkage rod 2 is connected to a rotating handle 4.

[0021] In order to better achieve synchronous lifting, the lifting action is completed by connecting the linkage rod 2 in series with the scissor support frame 1. The scissor support frame 1 has a simple structure, mature products, large and small sizes, applicability, and low production cost; the linkage rod 2 drives to ensure that each scissor support frame 1 in series has the same lifting range

[0022] The rotating handle 4 is an annular structure, so as to facilitate the insertion of an auxiliary rotating tool.

[0023] After connecting multiple scissor-type support frames 1 in series, all the scissor-type support frames 1 are driven to rise and fall by rotating the handle 4, which requires a lot of force. In order to reduce the difficulty of operation, the handle 4 is designed to be a ring structure. When it needs to be rotated, auxiliary rods can be inserted to increase the torque to achieve the purpose of saving effort.

[0024] To suit different scenarios, the refrigerant in the water-cooled copper 5 can be pre-installed or circulated. When the refrigerant in the water-cooled copper 5 is pre-installed, the inner cavity of the water-cooled copper 5 is a closed inner cavity, which is fully filled with refrigerant. When in use, the device can be directly clamped together with the part to be welded; when the refrigerant in the water-cooled copper 5 is circulated, the inner cavity of the water-cooled copper 5 is set as a connected inner cavity, the device is first clamped together with the part to be welded, and then connected to the external refrigerant circulation device through a pipeline with a valve, and the valve is opened to allow the refrigerant to circulate.

[0025] Specifically, the utility model provides an auxiliary device for welding long strip workpieces, especially an auxiliary device for welding groove plates to square tubes; the auxiliary device is effective in the application of welding groove plates to square tubes, can quickly cool down, and avoid stress deformation.

[0026] When working, first place the device into the workpiece to be welded. The scissor-type support frame 1 can be retracted, so that the auxiliary device can be conveniently placed into and taken out from the inner cavity of the groove plate butt-welded square tube; then turn the handle 4 to raise the scissor-type support frame 1, so that the water-cooled copper 5 is in close contact with the inner wall of the part to be welded; the groove 6 is directly opposite to the weld.

[0027] When the water-cooled copper 5 refrigerant adopts the pre-installed method, the welding operation can be carried out after the device and the parts to be welded are clamped together; when the water-cooled copper 5 refrigerant adopts the circulating flow method, the device and the parts to be welded are first clamped together, and then connected to the external refrigerant circulation device through a pipeline with a valve, the valve is opened to allow the refrigerant to circulate, and then the welding operation can be carried out.

[0028] After welding is completed, if the water-cooled copper 5 refrigerant is pre-installed, directly turn the handle 4 to make the scissor-type support frame 1 fall, the water-cooled copper 5 is out of contact with the inner wall of the part to be welded, and then take out the device; if the water-cooled copper 5 refrigerant is circulating, first close the valve, then disconnect the pipeline connected to the external refrigerant circulation device, and then turn the handle 4 to make the scissor-type support frame 1 fall, the water-cooled copper 5 is out of contact with the inner wall of the part to be welded, and then take out the device. The design of the groove 6 meets the welding process requirements of single-sided welding and double-sided forming. During welding, the groove 6 is directly opposite to the weld. The water-cooled copper 5 quickly cools down the area around the weld through heat transfer, but will not contact the weld, and thus the water-cooled copper 5 will not adhere to the inner wall of the square tube welded to the groove plate.

[0029] Except for the technical features described in the specification, all other technical features are known to technicians in this field.

Claims

1. A welding auxiliary device for long strip products, comprising a cooling structure and a parallel support mechanism capable of lifting and lowering, characterized in that: The upper and lower parts of the parallel support mechanism are both connected to a cooling structure; the cooling structure comprises a strip-shaped water-cooled copper (5) and a strip-shaped bottom plate (3); the water-cooled copper (5) is a cavity-shaped structure; the bottom plate (3) is connected to the upper part of the parallel support part; the water-cooled copper (5) is connected to the upper part of the bottom plate (3); the side surface of the water-cooled copper (5) facing the weld to be welded is provided with a groove (6) opening outward along the center line.

2. The auxiliary device according to claim 1, characterized in that The parallel support mechanism comprises a preset number of scissor-type support frames (1) arranged in parallel along a straight line, wherein the scissor-type support frames (1) are connected in series via a linkage rod (2), and the head and tail ends of the linkage rod (2) are respectively connected to the ends of the screw rods of adjacent scissor-type support frames (1); and the end of the screw rod of the outermost scissor-type support frame (1) that is not connected to the linkage rod (2) is connected to a rotating handle (4).

3. The auxiliary device according to claim 2, characterized in that The rotating handle (4) is an annular structure.

4. The auxiliary device according to any one of claims 1 to 3, characterized in that The inner cavity of the water-cooled copper (5) is a closed inner cavity, and the closed inner cavity is fully filled with refrigerant.

5. The auxiliary device according to any one of claims 1 to 3, characterized in that The inner cavity of the water-cooled copper (5) is configured as a communicating inner cavity, and the communicating inner cavity is connected to an external refrigerant circulation device via a pipeline provided with a valve.

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