A straight seam welding device for thin-walled cylinders

Abstract

This utility model discloses a straight seam welding device for thin-walled cylinders, including a base frame, a cylinder forming mold, and a lifting mechanism. A mold platform is fixedly installed on the base frame, and the cylinder forming mold is fixedly installed on the top surface of the mold platform. The cylinder forming mold is hollow and cylindrical with an open top. A vertical notch is formed on the side wall of the cylinder forming mold. The lifting mechanism is installed on the side of the mold platform, and a vertically moving lifting beam is driven to the lifting mechanism. A welding gun element is installed on the lifting beam, and the welding gun element is installed in accordance with the direction of the notch in the cylinder forming mold. This utility model inserts a thin-walled steel plate into the cylinder forming mold, and the internal constraint of the cylinder forming mold causes the thin-walled steel plate to naturally curl into a cylindrical shape. The cylindrical joint is adjusted to the position of the notch, and the straight seam welding operation is quickly completed using the lifting welding gun element. This utility model has the advantages of convenient operation and good cylinder production quality.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine manufacturing equipment technology, and more specifically, to a straight seam welding device for thin-walled cylinders. Background Technology

[0002] The cylinder body is a crucial component used in axial flow fans. During cylinder body manufacturing, thin-walled steel plates cut to standard sizes are first rolled into a cylindrical shape. The rolled cylinder body has a straight seam. Workers need to spot weld the seam first to maintain the shape of the cylinder body, and finally weld the entire straight seam completely. Currently, both spot welding and full seam welding are done manually, which not only results in low welding production efficiency but also leads to poor weld uniformity and welding quality issues, affecting the appearance and usability of the fan product. In response, the workshop proposed designing an automated cylinder body welding equipment to assist in completing the cylinder body seam welding operation, and this project was born from this. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a straight seam welding device for thin-walled cylinders. This invention involves loading a thin-walled steel plate into a cylinder manufacturing mold, using the internal constraints of the mold to allow the thin-walled steel plate to naturally curl into a cylindrical shape, adjusting the cylindrical joint to the notch position, and using a lifting welding torch element to quickly complete the straight seam welding operation. This invention has the advantages of convenient operation and good cylinder production quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A straight seam welding device for thin-walled cylinders includes a base frame, a cylinder forming mold, and a lifting mechanism. A mold platform is fixedly installed on the base frame, and the cylinder forming mold is fixedly installed on the top surface of the mold platform. The cylinder forming mold is hollow and cylindrical with an open top. A vertical notch is formed on the side wall of the cylinder forming mold. The lifting mechanism is installed on the side of the mold platform, and a vertically lifting beam is drivenly connected to the lifting mechanism. A welding gun element is installed on the lifting beam, and the welding gun element is installed in accordance with the direction of the notch in the cylinder forming mold.

[0006] Furthermore, the lifting mechanism includes a frame, a screw, and a motor. The frame is erected and fixedly installed on the base frame. Two guide rails are symmetrically installed on both sides of the frame in the width direction. The screw is rotatably installed inside the frame and is arranged parallel to the guide rails. The motor is fixedly installed on the top of the frame and the output end of the motor is connected to the screw. The lifting beam is guided and connected to the two guide rails and threadedly connected to the screw.

[0007] Furthermore, the welding torch element is horizontally mounted on the lifting beam, and the welding torch element includes a telescopic push cylinder and a torch body component, the torch body component being connected to the piston rod end of the telescopic push cylinder.

[0008] Furthermore, the inner hole of the cylinder manufacturing mold is adapted to the shape of the cylinder part, the notch groove penetrates the side wall of the cylinder manufacturing mold, and the width of the notch groove is adapted to the insertion of the gun head of the gun body component.

[0009] Furthermore, a flat bottom plate is welded to the bottom of the outer wall of the cylinder manufacturing mold, and the cylinder manufacturing mold is fixedly connected by bolts to the flat bottom plate.

[0010] Furthermore, the cylindrical body manufacturing mold portion extends beyond the edge of the mold platform, and the extended portion of the cylindrical body manufacturing mold is located at the notch slot position.

[0011] Furthermore, the height of the cylinder manufacturing mold is lower than the height of the cylinder part, and the height of the cylinder manufacturing mold is set to 80%-90% of the height of the cylinder part.

[0012] The beneficial effects of this utility model are:

[0013] This utility model has a reasonable design. Thin-walled steel plates are naturally rolled into a cylindrical shape by being inserted into a cylindrical mold. The cylindrical joint is adjusted to the notch position, and a welding gun element with lifting and lowering motion is used to quickly complete the straight seam welding operation. This utility model has the advantages of convenient operation and good cylindrical production quality, and can well meet the workshop's production needs for cylindrical parts. Attached Figure Description

[0014] Figure 1 This is a three-dimensional external structural diagram of a straight seam welding device for a thin-walled cylinder in this embodiment;

[0015] Figure 2 This is a side view of a straight seam welding device for a thin-walled cylinder in this embodiment.

[0016] Figure reference numerals: 1. Base frame; 2. Mold table; 3. Cylinder manufacturing mold; 31. Notch groove; 32. Flat bottom plate; 4. Lifting mechanism; 41. Frame body; 42. Guide rail; 43. Screw; 44. Motor; 5. Lifting beam; 6. Welding gun component; 61. Telescopic push cylinder; 62. Gun body component. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 and Figure 2 The device for straight seam welding of thin-walled cylinders, as shown, includes a base frame 1, a cylinder forming mold 3, and a lifting mechanism 4. The base frame 1 is used for the overall installation and fixing of the equipment and can be installed and fixed in the processing workshop. A mold platform 2 is fixedly installed on the base frame 1, and the cylinder forming mold 3 is fixedly installed on the top surface of the mold platform 2. The mold platform 2 serves to elevate the cylinder forming mold 3. The cylinder forming mold 3 is hollow and cylindrical. The inner hole of the cylinder forming mold 3 is adapted to the shape of the cylinder part to be manufactured. The top of the cylinder forming mold 3 is open. The thin-walled steel plate is inserted into the cylinder forming mold 3. Under the constraint of the mold's shape and the natural elasticity of the steel plate, it naturally curls into a cylindrical shape after insertion, forming a straight seam. This invention features a vertical notch 31 on the side wall of the mold 3, designed for welding operations. Therefore, the notch 31 must penetrate the side wall of the mold 3. After the thin-walled steel plate is inserted and formed, the worker needs to adjust the position of the seam to move it. The moving part is located in the notch 31 to facilitate welding operations. The lifting mechanism 4 is installed on the side of the mold table 2. The lifting mechanism 4 is connected to a vertically moving lifting beam 5. The lifting beam 5 is equipped with a welding gun element 6, which is installed in the direction of the notch 31 of the cylinder forming mold 3. The lifting beam 5 carries the welding gun element 6 to make vertical lifting movements. The welding gun element 6 moves through the notch 31 to complete the welding operation of the straight joint. In this utility model, the worker only needs to complete the operation of inserting the thin-walled steel plate, aligning the joint, and removing the welded parts. The labor intensity is greatly reduced and the work difficulty is also significantly reduced. The forming of the thin-walled steel plate in this utility model is determined by the cylinder forming mold 3. The cylinder forming has good roundness. The joint welding is automatically completed by the vertically moving welding gun element 6, which not only eliminates the spot welding step, but also significantly improves the weld quality. This utility model has a reasonable structural design, low manufacturing cost, and simple operation. The application of this utility model can meet the workshop's needs for convenient and high-quality welding operations of cylinder parts.

[0019] like Figure 1As shown, the lifting mechanism 4 includes a frame 41, a screw 43, and a motor 44. The frame 41 is vertically mounted and fixedly installed on the base frame 1. Two guide rails 42 are symmetrically installed on both sides of the frame 41 in the width direction. The screw 43 is rotatably mounted inside the frame 41, parallel to the guide rails 42, and positioned in the center between the two guide rails 42. The motor 44 is fixedly mounted on the top of the frame 41, and the output end of the motor 44 is connected to the screw 43. The lifting beam 5 is guided and connected to the two guide rails 42 and threadedly connected to the screw 43. The motor 44 drives the screw 43 to rotate. The lifting beam 5 is guided and slidably connected to the two guide rails 42. The guide rails 42 play a motion restriction role, so that the lifting beam 5 can only move vertically. The vertical movement of the lifting beam 5 forms the vertical movement of the welding gun element 6. The vertical movement stroke of the welding gun element 6 should meet the requirements of the entire line welding of the joint of the cylindrical parts.

[0020] like Figure 1 and Figure 2 As shown, the welding torch element 6 is horizontally installed on the lifting beam 5. The welding torch element 6 includes a telescopic push cylinder 61 and a torch body component 62. The torch body component 62 is connected to the piston rod end of the telescopic push cylinder 61. The movement of the torch body component 62 is driven by the extension and retraction of the piston rod of the telescopic push cylinder 61. During welding operations, the torch head of the torch body component 62 needs to be inserted into the notch groove 31 to approach the weld position. The notch groove 31 of this utility model is designed with a width that is adapted to the insertion of the torch head of the torch body component 62.

[0021] Depending on the size of the axial flow fans produced by the company, the dimensions of the cylindrical parts also vary. To accommodate the machining of these different sized cylindrical parts, such as... Figure 1 As shown, the cylinder manufacturing mold 3 of this utility model adopts a detachable installation design. A flat bottom plate 32 is welded to the bottom of the outer wall of the cylinder manufacturing mold 3. The cylinder manufacturing mold 3 is fixedly connected to the mold table 2 by bolts through the flat bottom plate 32. In this way, when it is necessary to process cylinder parts of different sizes, different cylinder manufacturing molds 3 can be replaced and installed.

[0022] In this utility model, the notch 31 must not only penetrate the side wall, but also penetrate vertically, so as not to affect the straight-line passage of the gun head of the gun body component 62. For this reason, as... Figure 2 As shown, in this utility model, the cylindrical body forming mold 3 is suspended beyond the edge of the mold platform 2. The suspended part of the cylindrical body forming mold 3 is located at the notch groove 31 to meet the vertical through-hole requirement of the notch groove 31. Generally, the area of ​​the suspended part of the cylindrical body forming mold 3 is set to be less than 10% of the total cross-sectional area of ​​the cylindrical body forming mold 3.

[0023] To facilitate workers in adjusting the position of the cylinder joint so that the rolled cylinder's joint is located in the notch groove 31, this utility model designs the height of the cylinder making mold 3 to be lower than the height of the cylinder part. The height dimension of the cylinder making mold 3 is set to 80%-90% of the height dimension of the cylinder part. This ensures that the thin-walled steel plate can be smoothly rolled into a cylinder after being inserted, and also allows the top of the cylinder to extend beyond the cylinder making mold 3. Workers can adjust the joint position by holding the top of the cylinder to adjust it to the notch groove 31.

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A straight seam welding device for thin-walled cylinders, characterized in that, The device includes a base frame (1), a cylindrical body manufacturing mold (3), and a lifting mechanism (4). A mold platform (2) is fixedly installed on the base frame (1). The cylindrical body manufacturing mold (3) is fixedly installed on the top surface of the mold platform (2). The cylindrical body manufacturing mold (3) is a hollow cylindrical shape with an open top. A vertical notch (31) is provided on the side wall of the cylindrical body manufacturing mold (3). The lifting mechanism (4) is installed on the side of the mold platform (2). A vertically lifting beam (5) is connected to the lifting mechanism (4). A welding gun element (6) is installed on the lifting beam (5). The welding gun element (6) is installed in the direction corresponding to the notch (31) of the cylindrical body manufacturing mold (3).

2. The straight seam welding device for thin-walled cylinders according to claim 1, characterized in that, The lifting mechanism (4) includes a frame (41), a screw (43), and a motor (44). The frame (41) is erected and fixedly installed on the base frame (1). Two guide rails (42) are symmetrically installed on both sides of the frame (41) in the width direction. The screw (43) is rotatably installed inside the frame (41). The screw (43) is parallel to the guide rails (42). The motor (44) is fixedly installed on the top of the frame (41). The output end of the motor (44) is connected to the screw (43). The lifting beam (5) is guided and connected to the two guide rails (42) and threadedly connected to the screw (43).

3. The straight seam welding device for thin-walled cylinders according to claim 1, characterized in that, The welding gun element (6) is horizontally mounted on the lifting beam (5). The welding gun element (6) includes a telescopic push cylinder (61) and a gun body component (62). The gun body component (62) is connected to the piston rod end of the telescopic push cylinder (61).

4. The straight seam welding device for thin-walled cylinders according to claim 3, characterized in that, The inner hole of the cylinder manufacturing mold (3) is adapted to the shape of the cylinder part, the notch (31) penetrates the side wall of the cylinder manufacturing mold (3), and the width of the notch (31) is adapted to the insertion of the gun head of the gun body component (62).

5. The straight seam welding device for thin-walled cylinders according to claim 1, characterized in that, The bottom of the outer wall of the cylinder forming mold (3) is welded to a flat bottom plate (32), and the cylinder forming mold (3) is fixedly connected by bolts to the flat bottom plate (32).

6. The straight seam welding device for thin-walled cylinders according to claim 1, characterized in that, The cylindrical body manufacturing mold (3) is partially suspended beyond the edge of the mold platform (2), and the suspended part of the cylindrical body manufacturing mold (3) is located at the notch groove (31).

7. The straight seam welding device for thin-walled cylinders according to claim 1, characterized in that, The height of the cylinder manufacturing mold (3) is lower than the height of the cylinder part, and the height dimension of the cylinder manufacturing mold (3) is set to 80%-90% of the height dimension of the cylinder part.

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