Laser welding positioning device

Abstract

The utility model discloses a laser welding positioning device which comprises a limiting sliding frame and a workpiece to be welded, the whole limiting sliding frame is an inverted-U-shaped frame, the two ends of the limiting sliding frame are fixedly connected with installation roller frames, supporting rollers are rotationally installed between the two installation roller frames in a front-back symmetry mode, and contact rubber rollers are installed on the supporting rollers in a sliding mode. And a limiting sliding groove is formed in the limiting sliding frame, limiting sliding blocks are symmetrically installed in the limiting sliding groove in a sliding mode, a clamping extrusion plate is fixedly connected to the limiting sliding blocks, and a rotating shaft is rotatably installed in the clamping extrusion plate. Workpieces to be welded are directly placed between the supporting rollers, the contact rubber rollers are used for supporting the workpieces to be welded, due to the characteristics of a cylinder, the ends of the two identical workpieces to be welded are automatically in an aligned state at the moment, a clamping motor is directly started to drive clamping extrusion plates to get close to each other to extrude the two workpieces to be welded to be attached to each other, and welding is completed. And the workpiece to be welded can be clamped and positioned, and the clamping steps are simple and rapid.

Description

Technical Field

[0001] This utility model relates to a clamping and positioning device, and more particularly to a laser welding positioning device. Background Technology

[0002] Laser welding is a material processing method that mainly uses high-energy laser pulses to locally heat a small area on the surface of a material. Then, the energy of the laser radiation diffuses into the interior of the workpiece through heat conduction, and the workpiece melts to form a specific molten pool to achieve the purpose of welding.

[0003] For example, a laser welding positioning device disclosed in Chinese Patent Publication No. CN222520221U includes a truss, a support plate, a cover plate, and a power assembly. The truss has a top plate and a bottom plate vertically spaced apart. The support plate is movably connected to the bottom plate. A recessed groove is formed on the support plate to hold the lower workpiece. A limit assembly is installed within the groove. The cover plate is movably connected to the top plate. At least one set of telescopic sources is installed on the cover plate. The movable rod of the telescopic source extends vertically downwards and is connected to a ring plate. Multiple abutment rods are screwed onto the ring plate, allowing the upper workpiece to be pressed against the middle of the ring plate. The power assembly is located on the bottom plate and connected to the support plate. The telescopic sources can drive the ring plate to move downwards, causing the upper workpiece to press against the lower workpiece to form a welding position. The power assembly can drive the support plate to rotate and adjust the welding position, enabling welding to be completed in one go with high welding quality and avoiding weld cracking during position adjustments.

[0004] The aforementioned existing laser welding positioning device has some problems. First, it uses the power component below to drive one workpiece to rotate, while the other needs to be driven by friction. There is a possibility of slippage between the two workpieces, which can cause relative movement between the two workpieces before the welding position is hardened, resulting in welding failure. Second, when clamping the workpiece, it is necessary to manually move the limiting components and the limiting mechanism such as the stop rod, which makes the workpiece installation process cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a laser welding positioning device to solve the existing problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a laser welding positioning device, comprising a limiting slide and a workpiece to be welded, wherein the limiting slide is an inverted U-shaped frame, and mounting roller frames are fixedly connected to both ends of the limiting slide. Support rollers are symmetrically and rotatably mounted between the two mounting roller frames. Contact rollers are slidably mounted on the support rollers. A limiting groove is formed inside the limiting slide, and limiting sliders are symmetrically and slidably mounted inside the limiting groove. A clamping extrusion plate is fixedly connected to the limiting slider, and a rotating shaft is rotatably mounted inside the clamping extrusion plate. An extrusion disc is fixedly connected to one end of the rotating shaft.

[0007] Preferably, a bidirectional threaded adjusting rod is rotatably installed in the limiting slide groove, and a clamping motor is fixedly connected to one side of the limiting slide, with the output end of the clamping motor fixedly connected to the bidirectional threaded adjusting rod.

[0008] Preferably, a threaded sleeve is embedded in the limiting slider, and the threaded sleeve is threadedly engaged with the bidirectional threaded adjusting rod.

[0009] Preferably, a rotary motor is fixedly connected to the outer wall of one side of the mounting roller frame, and one end of one of the support rollers is fixedly connected to the output end of the rotary motor.

[0010] Preferably, the outer wall of the support roller is provided with a limiting groove, the inner wall of the contact roller is provided with a connecting through hole, and a limiting protrusion is fixedly connected to the inner wall of the connecting through hole, the limiting protrusion and the limiting groove cooperate with each other.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By placing the workpiece to be welded directly between the support rollers and using the contact rubber roller to support the workpiece, due to the characteristics of the cylinder, the ends of the two identical workpieces to be welded are automatically aligned. The clamping motor is then started to drive the clamping extrusion plate to move closer to each other and press the two workpieces to be welded together, thus completing the clamping and positioning of the workpiece to be welded. Compared with existing devices, the clamping steps are simple and quick.

[0013] 2. By starting the rotary motor to drive the support roller to rotate, the rotation of the support roller can drive the two sleeved contact rollers to rotate synchronously. The two contact rollers drive the two workpieces to be welded to rotate respectively, thus avoiding relative movement between the two workpieces. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention when clamping the workpiece to be welded;

[0016] Figure 3This is a schematic diagram of the clamping and extrusion plate structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the contact rubber roller structure of this utility model.

[0018] In the diagram: 1. Limiting slide; 101. Limiting slide groove; 102. Bidirectional threaded adjusting rod; 103. Clamping motor; 2. Mounting roller frame; 201. Support roller; 202. Rotary motor; 203. Limiting slot; 3. Contact roller; 301. Connecting through hole; 302. Limiting protrusion; 4. Clamping extrusion plate; 401. Limiting slider; 402. Threaded sleeve block; 403. Rotating shaft; 404. Extrusion disc; 5. Workpiece to be welded. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a laser welding positioning device, including a limiting slide 1 and a workpiece 5 to be welded. The limiting slide 1 is an inverted U-shaped frame. Both ends of the limiting slide 1 are fixedly connected to mounting roller frames 2. Support rollers 201 are symmetrically mounted between the two mounting roller frames 2. Contact rollers 3 are slidably mounted on the support rollers 201. A limiting groove 101 is opened in the limiting slide 1. A limiting slider 401 is symmetrically slidably mounted in the limiting groove 101. A clamping extrusion plate 4 is fixedly connected to the limiting slider 401. A rotating shaft 403 is rotatably mounted in the clamping extrusion plate 4. An extrusion disc 404 is fixedly connected to one end of the rotating shaft 403.

[0021] In this embodiment, two contact rollers 3 are symmetrically sleeved on a single support roller 201, with the two contact rollers 3 supporting one workpiece 5 to be welded. Both workpieces 5 are placed between the support rollers 201. Figure 2As shown, two workpieces 5 to be welded are placed between support rollers 201. Due to the characteristics of cylinders, the ends of the two identical workpieces 5 to be welded are automatically aligned. The limiting slider 401 is slidably installed inside the limiting groove 101, and the clamping extrusion plate 4 is slidably installed above the limiting slide frame 1. The two clamping extrusion plates 4 are controlled to move closer to each other, driving the extrusion plate 404 to press against the ends of the workpieces 5 to be welded, thereby pressing the two workpieces 5 to be welded together, so that the welding ends of the two workpieces 5 to be welded are attached. Compared with the existing device, the workpieces 5 to be welded can be placed directly between the two support rollers 201 without additional operation, and the clamping is more convenient. Secondly, the contact rubber roller 3 is used to contact the surface of the workpieces 5 to be welded. The rotation of the support roller 201 can drive the contact rubber roller 3 to rotate synchronously. The two contact rubber rollers 3 drive the two workpieces 5 to be welded to rotate at the same time, avoiding the relative movement of the two workpieces 5 to be welded.

[0022] In order to achieve the purpose of adjusting the spacing of the clamping extrusion plates 4, the device adopts the following technical solution: a bidirectional threaded adjustment rod 102 is rotatably installed in the limiting slide groove 101, a clamping motor 103 is fixedly connected to one side of the limiting slide 1, the output end of the clamping motor 103 is fixedly connected to the bidirectional threaded adjustment rod 102, and a threaded sleeve block 402 is embedded in the limiting slider 401, and the threaded sleeve block 402 is threadedly engaged with the bidirectional threaded adjustment rod 102.

[0023] By starting the clamping motor 103, the bidirectional threaded adjusting rod 102 can be rotated. The bidirectional threaded adjusting rod 102 is threadedly engaged with the threaded sleeve block 402. The rotation of the bidirectional threaded adjusting rod 102 can drive the limiting slider 401 to move. The movement of the limiting slider 401 drives the clamping extrusion plate 4 to move, controlling the two clamping extrusion plates 4 to move closer or further apart.

[0024] In order to achieve the purpose of driving the contact roller 3 to rotate, the device adopts the following technical solution: a rotary motor 202 is fixedly connected to the outer wall of the roller frame 2 on one side, one end of a support roller 201 is fixedly connected to the output end of the rotary motor 202, a limit groove 203 is opened on the outer wall of the support roller 201, a connecting through hole 301 is opened in the contact roller 3, and a limit protrusion 302 is fixedly connected to the inner wall of the connecting through hole 301. The limit protrusion 302 and the limit groove 203 cooperate with each other.

[0025] By connecting the through hole 301 and the limiting slot 203, the rotation of the contact rubber roller 3 relative to the support roller 201 is restricted, so that the contact rubber roller 3 can only slide left and right along the support roller 201. According to the length of the workpiece 5 to be welded, the position of the contact rubber roller 3 is adjusted so that the contact rubber roller 3 is as close as possible to the center of the workpiece 5 to be welded, so as to avoid uneven weight distribution on the left and right sides of the workpiece 5 to the left and right, which would cause one end to lift up. Starting the rotary motor 202 can drive the support roller 201 to rotate, and the rotation of the support roller 201 can drive the contact rubber roller 3 to rotate, thereby using the contact rubber roller 3 to drive the rotation of the workpiece 5 to be welded.

[0026] The working principle and usage process of this utility model are as follows: Two workpieces 5 to be welded are placed directly between two support rollers 201. Then, the clamping motor 103 is started to drive the bidirectional threaded adjusting rod 102 to rotate. The rotation of the bidirectional threaded adjusting rod 102 can drive the two clamping extrusion plates 4 to move closer to each other. The clamping extrusion plates 4 will use the extrusion disc 404 to press against the ends of the workpieces 5 to be welded, pressing the two workpieces 5 to be welded together. By using the method of the two clamping extrusion plates 4 to move closer to each other, it can be ensured that the two workpieces 5 to be welded are in the center position, thus clamping and positioning the workpieces. When using laser welding, the rotary motor 202 can be started to drive the support rollers 201 to rotate as needed. The rotation of the support rollers 201 can drive the contact rollers 3 to rotate. The contact rollers 3 contact the surface of the workpieces 5 to be welded, and the rotation of the contact rollers 3 can drive the workpieces 5 to rotate synchronously, adjusting the welding position of the contact surfaces of the two workpieces 5 to be welded.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding positioning device, comprising a limiting slide (1) and a workpiece to be welded (5), characterized in that: The limiting slide (1) is an inverted U-shaped frame. Both ends of the limiting slide (1) are fixedly connected to the mounting roller frame (2). The two mounting roller frames (2) are symmetrically mounted with support rollers (201) rotating back and forth. The support rollers (201) are slidably mounted with contact rubber rollers (3). The limiting slide (1) has a limiting groove (101). The limiting slide (101) is symmetrically mounted with limiting sliders (401) sliding in the limiting groove (101). The limiting sliders (401) are fixedly connected with clamping extrusion plates (4). The clamping extrusion plates (4) are rotatably mounted with rotating shafts (403). One end of the rotating shafts (403) is fixedly connected with an extrusion plate (404).

2. The laser welding positioning device according to claim 1, characterized in that: A bidirectional threaded adjusting rod (102) is rotatably installed inside the limiting slide groove (101). A clamping motor (103) is fixedly connected to one side of the limiting slide (1). The output end of the clamping motor (103) is fixedly connected to the bidirectional threaded adjusting rod (102).

3. The laser welding positioning device according to claim 2, characterized in that: The limiting slider (401) is internally fitted with a threaded sleeve (402), which is threadedly engaged with the bidirectional threaded adjusting rod (102).

4. The laser welding positioning device according to claim 1, characterized in that: A rotary motor (202) is fixedly connected to the outer wall of the mounting roller frame (2) on one side, and one end of one of the support rollers (201) is fixedly connected to the output end of the rotary motor (202).

5. The laser welding positioning device according to claim 1, characterized in that: The outer wall of the support roller (201) is provided with a limiting groove (203), and the inner wall of the contact roller (3) is provided with a connecting through hole (301). A limiting protrusion (302) is fixedly connected to the inner wall of the connecting through hole (301), and the limiting protrusion (302) and the limiting groove (203) cooperate with each other.

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