A welding path correction device

Abstract

The utility model discloses a kind of welding path deviation rectifying devices, including first installation frame, welding torch, the first installation frame two side inner wall is equipped with first limit sliding slot, the first installation frame is provided with second installation frame, the second installation frame two side symmetry is fixedly connected with first limit sliding block, the first limit sliding block is slidably matched with first limit sliding slot, the second installation frame is provided with second limit sliding block, the second installation frame front and rear inner wall is equipped with second limit sliding slot, the second limit sliding block is slidably matched with second limit sliding slot, the welding torch is fixedly connected in second limit sliding block interior, laser displacement sensor is fixedly connected on the second limit sliding block lower surface. By using laser displacement sensor for real-time collection welding torch and workpiece joint deviation data, after being calculated by control unit, servo mechanism is driven to automatically correct welding torch movement track, compared with artificial demonstration mode, deviation rectification accuracy is improved, effectively solve the path deviation problem caused by thermal deformation.

Description

Technical Field

[0001] This utility model relates to a deviation correction device, and more particularly to a welding path deviation correction device. Background Technology

[0002] With the development of industry, automated welding equipment is becoming increasingly common in the manufacturing sector. However, the preset trajectories of robots cannot cope with the cumulative errors in workpiece assembly, necessitating the use of path correction devices.

[0003] Existing path correction methods often rely on manual adjustment, which results in a lag in response and cannot compensate for path deviation caused by welding thermal deformation in real time. Utility Model Content

[0004] The purpose of this invention is to provide a welding path correction device to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding path correction device, comprising a first mounting frame and a welding torch, wherein the inner walls on both sides of the first mounting frame are provided with first limiting grooves, a second mounting frame is provided inside the first mounting frame, and first limiting sliders are symmetrically fixed to both sides of the second mounting frame, the first limiting sliders slidingly engaging with the first limiting grooves, a second limiting slider is provided inside the second mounting frame, and second limiting grooves are provided on the front and rear inner walls of the second mounting frame, the second limiting sliders slidingly engaging with the second limiting grooves, the welding torch being fixedly connected inside the second limiting slider, and a laser displacement sensor being fixedly connected below the second limiting slider.

[0006] Preferably, the first mounting frame is symmetrically fixed with fixing feet on both sides.

[0007] Preferably, a first lead screw is rotatably mounted inside the first mounting frame, a first motor is fixedly connected to the front of the first mounting frame, and the output end of the first motor is fixedly connected to one end of the first lead screw.

[0008] Preferably, a first threaded sleeve is embedded in the second mounting frame, and the first threaded sleeve is threadedly engaged with the first lead screw.

[0009] Preferably, a second lead screw is rotatably mounted inside the second mounting frame, a second motor is fixedly connected to one side of the second mounting frame, and the output end of the second motor is fixedly connected to one end of the second lead screw.

[0010] Preferably, a second threaded sleeve is embedded in the second limiting slider, and the second threaded sleeve is threadedly engaged with the second lead screw.

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

[0012] 1. By using a laser displacement sensor to collect deviation data between the welding torch and the workpiece joint in real time, the control unit calculates the data and drives the servo mechanism to automatically correct the welding torch's trajectory. Compared with manual teaching, the correction accuracy is improved, effectively solving the path deviation problem caused by thermal deformation.

[0013] 2. By starting the first motor, the second mounting frame can be moved back and forth. By starting the second motor, the second limit slider can be moved left and right, thereby realizing the fine adjustment of the welding gun in the front, back, left and right. It can realize the path correction in the front, back, left and right according to the offset trajectory. 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 first mounting frame structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the second mounting frame structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the second limiting slider and welding gun structure of this utility model.

[0018] In the diagram: 1. First mounting frame; 101. Fixed foot; 102. First limiting slide groove; 103. First lead screw; 104. First motor; 2. Second mounting frame; 201. First limiting slider; 202. Second limiting slide groove; 203. First threaded sleeve; 204. Second lead screw; 205. Second motor; 3. Second limiting slider; 301. Second threaded sleeve; 302. Laser displacement sensor; 4. Welding torch. 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 1-4This utility model provides a technical solution: a welding path correction device, including a first mounting frame 1 and a welding torch 4. The inner walls on both sides of the first mounting frame 1 are provided with first limiting grooves 102. A second mounting frame 2 is provided inside the first mounting frame 1. First limiting sliders 201 are symmetrically fixed to both sides of the second mounting frame 2. The first limiting sliders 201 slide in cooperation with the first limiting grooves 102. A second limiting slider 3 is provided inside the second mounting frame 2. The inner walls at the front and rear of the second mounting frame 2 are provided with second limiting grooves 202. The second limiting slider 3 slides in cooperation with the second limiting grooves 202. The welding torch 4 is fixed inside the second limiting slider 3. A laser displacement sensor 302 is fixed below the second limiting slider 3.

[0021] In this embodiment, the second mounting frame 2 is slidably installed inside the first mounting frame 1 by the sliding engagement of the first limiting groove 102 and the first limiting slider 201, allowing the second mounting frame 2 to slide back and forth. The second limiting slider 3 is slidably engaged with the second limiting groove 202, allowing the second limiting slider 3 to slide left and right inside the second mounting frame 2. The welding torch 4 is fixed inside the second limiting slider 3. After the device is fixed on the welding robotic arm, the robotic arm drives the device to move, causing the welding torch 4 to weld along the preset path. The laser displacement sensor 302 is used to collect the deviation data between the welding torch and the workpiece joint in real time. The collected data is transmitted to the control system in real time. The control system sends pulse control signals to control the sliding adjustment of the second mounting frame 2 and the second limiting slider 3. After calculation by the control unit, the servo mechanism is driven to automatically correct the movement trajectory of the welding torch. Compared with the manual teaching method, the correction accuracy is improved, adapting to complex weld types such as V-shaped and lap joints, effectively solving the path deviation problem caused by thermal deformation. The control system can adopt the existing common PLC control system, which will not be described in detail for existing devices.

[0022] In order to achieve the purpose of adjusting the position of the second mounting frame 2, the device adopts the following technical solution: the first mounting frame 1 is symmetrically fixed with fixed feet 101 on both sides, the first mounting frame 1 is rotatably installed with a first lead screw 103 inside the first mounting frame 1, the first mounting frame 1 is fixedly connected with a first motor 104 on the front side, the output end of the first motor 104 is fixedly connected with one end of the first lead screw 103, and the second mounting frame 2 is embedded with a first threaded sleeve 203, which is threadedly engaged with the first lead screw 103.

[0023] The device, along with the welding torch 4, can be fixed to the robotic arm using bolts via the fixing foot 101. During the automatic welding process, dynamic correction is achieved. Starting the first motor 104 can drive the first lead screw 103 to rotate. The first lead screw 103 is threadedly engaged with the first threaded sleeve 203, thereby driving the second mounting frame 2 to move and adjust the position of the second mounting frame 2 back and forth.

[0024] In order to achieve the purpose of adjusting the position of the second limiting slider 3, the device adopts the following technical solution: a second lead screw 204 is rotatably installed in the second mounting frame 2, a second motor 205 is fixedly connected to one side of the second mounting frame 2, the output end of the second motor 205 is fixedly connected to one end of the second lead screw 204, and a second threaded sleeve 301 is embedded in the second limiting slider 3, and the second threaded sleeve 301 is threadedly engaged with the second lead screw 204.

[0025] By starting the second motor 205, the second lead screw 204 can be driven to rotate. The second lead screw 204 is threadedly engaged with the second threaded sleeve 301. The rotation of the second lead screw 204 can drive the second limit slider 3 to move left and right. The second limit slider 3 can drive the welding gun 4 to move.

[0026] The working principle and usage process of this utility model are as follows: The device is fixed on the welding robotic arm, and the robotic arm drives the device to move, so that the welding torch 4 welds along the preset path. The laser displacement sensor 302 is used to collect the deviation data between the welding torch and the workpiece joint in real time. The collected data is transmitted to the control system in real time. After being processed by the control unit, the second motor 205 and the first motor 104 are driven to adjust the path of the welding torch 4 in the front, back, left and right directions, respectively, so as to realize the automatic correction of the welding torch movement trajectory.

[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 welding path correction device, comprising a first mounting frame (1) and a welding torch (4), characterized in that: The first mounting frame (1) has a first limiting groove (102) on both sides of its inner wall. The first mounting frame (1) has a second mounting frame (2) inside it. The second mounting frame (2) has a first limiting slider (201) symmetrically fixed on both sides of its inner wall. The first limiting slider (201) slides in cooperation with the first limiting groove (102). The second mounting frame (2) has a second limiting slider (3) inside it. The second mounting frame (2) has a second limiting groove (202) on its front and rear inner walls. The second limiting slider (3) slides in cooperation with the second limiting groove (202). The welding torch (4) is fixed inside the second limiting slider (3). A laser displacement sensor (302) is fixed below the second limiting slider (3).

2. The welding path correction device according to claim 1, characterized in that: The first mounting frame (1) is symmetrically fixed with fixing feet (101) on both sides.

3. The welding path correction device according to claim 1, characterized in that: A first lead screw (103) is rotatably mounted inside the first mounting frame (1). A first motor (104) is fixedly connected to the front of the first mounting frame (1). The output end of the first motor (104) is fixedly connected to one end of the first lead screw (103).

4. The welding path correction device according to claim 3, characterized in that: The second mounting frame (2) is fitted with a first threaded sleeve (203), which is threadedly engaged with the first lead screw (103).

5. A welding path correction device according to claim 1, characterized in that: A second lead screw (204) is rotatably mounted inside the second mounting frame (2), and a second motor (205) is fixedly connected to one side of the second mounting frame (2). The output end of the second motor (205) is fixedly connected to one end of the second lead screw (204).

6. A welding path correction device according to claim 5, characterized in that: The second limiting slider (3) is fitted with a second threaded sleeve (301), which is threadedly engaged with the second lead screw (204).

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