Laser welding device capable of detecting welding seam
By introducing laser displacement sensors and adjustment modules into the laser welding device, welds and focus are automatically calibrated, and the problems of low efficiency and unstable quality of existing laser welding equipment are solved, achieving efficient and stable welding effects.
Patent Information
- Application Number
- CN202421502703.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Existing laser welding equipment is inefficient and unstable during welding, and is prone to deviation from the focus and beads, resulting in bias welding or damage to the base material.
A laser welding device that can detect welds is used to identify the welds through a laser displacement sensor and connect them to the backend processor to control the vertical and horizontal adjustment modules, so that the focus of the welding gun and the welds are automatically calibrated to avoid human errors.
The stability and efficiency of welding are improved, ensuring that the focus of the weld and the laser beam overlap, improving the quality of the weld beads, and reducing human errors.
Smart Images
Figure CN223172134U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding automation equipment, and particularly relates to a laser welding device capable of detecting a weld seam. Background Art
[0002] A laser welding torch is a device that uses a high-energy laser pulse to locally heat a material in a small area and then completes welding. Based on the excellent capabilities of laser welding, it is easy to achieve welding automation. Therefore, equipment such as submerged arc welding, high-frequency welding, plasma arc welding, and argon arc welding that uses a laser welding torch in the market all have automatic welding.
[0003] When using a laser welding torch for welding, the focus of the laser beam needs to be concentrated on the welding point to fully exert the welding function. In the prior art, when welding a workpiece, the laser gun is generally held by hand and moved for welding, which not only has low welding efficiency and unstable welding quality, but also produces a vertical deviation, resulting in the non-coincidence of the focus and the weld bead, causing left and right deviations, and further causing partial welding or damage to the base material. Content of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a laser welding device capable of detecting a weld seam, and solves the problems mentioned in the above background.
[0005] The utility model provides the following technical scheme: A laser welding device capable of detecting a weld seam, comprising: a laser displacement sensor, a vertical adjustment module, and a horizontal adjustment module. The vertical adjustment module and the horizontal adjustment module are arranged oppositely in a cross shape. A displacement seat for installing a welding torch body is arranged in front of the horizontal adjustment module. The laser displacement sensor is installed at the bottom of the displacement seat directly in front of the welding torch body. The vertical adjustment module, the horizontal adjustment module, the welding torch body, and the laser displacement sensor are all electrically connected to a background processor arranged at the total control.
[0006] Preferably, a sliding member is slidably arranged inside the horizontal adjustment module. The displacement seat is installed on the front surface of the sliding member. The welding torch body penetrates through the bottom of the displacement seat and is installed with a welding torch nozzle.
[0007] Preferably, a second motor is installed on the top of the vertical adjustment module. The output shaft of the second motor is installed with a screw rod. The screw rod penetrates into the inside of the vertical adjustment module. The structure on the back of the middle part of the horizontal adjustment module is threadedly sleeved on the screw rod. The horizontal adjustment module and the vertical adjustment module are arranged to slide up and down.
[0008] Preferably, two slide bars are installed on the inner wall of the horizontal adjustment module. The sliding member is slidably sleeved on the two slide bars. The structure inside the vertical adjustment module corresponds to the structure inside the horizontal adjustment module.
[0009] Preferably, a first motor is installed at the left end of the horizontal adjustment module, a screw rod is installed on the output shaft of the first motor, the screw rod penetrates into the interior of the horizontal adjustment module, and the sliding member is threadedly sleeved on the screw rod.
[0010] Preferably, a convex-shaped through groove is formed on the surface of the joint between the displacement seat and the sliding member, the welding torch body is installed in the through groove, and the wiring part of the laser displacement sensor extends upward through the convex point of the through groove.
[0011] Preferably, the laser path emitted by the laser displacement sensor forms a laser ray, the focus of the laser ray converges in the weld seam, and the laser ray and the welding torch nozzle are on the same plane.
[0012] Preferably, the control switches of the vertical adjustment module and the horizontal adjustment module are both set on the adjustment module in the background processor, and the scanning data wiring of the laser displacement sensor is connected to the background processor.
[0013] Compared with the prior art, the present utility model has the following beneficial effects:
[0014] 1. For the laser welding device capable of detecting the weld seam, by installing the welding torch body on the vertical adjustment module and the horizontal adjustment module, and setting a laser displacement sensor to identify the deviation between the weld seam and the focus of the laser beam, transmitting relevant data to the background processor for calculation, and the processor controlling the operation of the vertical adjustment module and the horizontal adjustment module, the purpose of making the weld seam coincide with the focus of the laser beam is achieved. While ensuring the stability of welding, it can automatically vertically calibrate with the weld seam, avoiding the situation of left and right deviation, and thus ensuring the welding quality.
[0015] 2. For the laser welding device capable of detecting the weld seam, by using the laser displacement sensor to identify the weld seam, eliminating manual intervention, and ensuring the coincidence of the focus of the laser beam and the welding point through the vertical adjustment module and the horizontal adjustment module, reducing human error, and thus greatly improving the welding efficiency and improving the quality of the weld. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0017] Figure 2 is a front structural schematic diagram of the present utility model;
[0018] Figure 3 is a left structural schematic diagram of the present utility model;
[0019] Figure 4 is a top structural schematic diagram of the present utility model.
[0020] In the figure: 1. Vertical adjustment module; 2. Horizontal adjustment module; 3. Slide bar; 4. Sliding member; 5. Displacement seat; 6. Welding torch body; 7. Laser displacement sensor; 8. First motor; 9. Welding torch nozzle; 10. Second motor. Detailed implementation manners
[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0022] Please refer to Figures 1-4 , a laser welding device capable of detecting weld seams, including: a background processor, a vertical adjustment module 1 and a horizontal adjustment module 2. The vertical adjustment module 1 and the horizontal adjustment module 2 are arranged opposite to each other in a cross shape. In front of the horizontal adjustment module 2, there is a displacement seat 5 for installing the welding torch body 6. The laser displacement sensor 7 is installed at the bottom of the displacement seat 5 directly in front of the welding torch body 6. The vertical adjustment module 1, the horizontal adjustment module 2, the welding torch body 6 and the laser displacement sensor 7 are all electrically connected to the background processor provided at the general control. Among them, the laser displacement sensor 7 can be used with existing devices such as laser measuring instruments of the LJ-X8000 series and CMOS laser displacement sensors of the IL series.
[0023] Among them, a sliding member 4 is slidably arranged inside the horizontal adjustment module 2, the displacement seat 5 is installed on the front surface of the sliding member 4, and the welding torch body 6 passes through the bottom of the displacement seat 5 and is installed with a welding torch nozzle 9.
[0024] Among them, a second motor 10 is installed on the top of the vertical adjustment module 1. The output shaft of the second motor 10 is installed with a screw rod. The screw rod penetrates into the inside of the vertical adjustment module 1. The structure on the back of the middle part of the horizontal adjustment module 2 is threadedly sleeved on the screw rod. The horizontal adjustment module 2 and the vertical adjustment module 1 are arranged to slide up and down. In order to ensure that the welding point coincides with the focus in height, distance recognition is performed through the laser displacement sensor 7, and distance compensation in the up and down directions is performed through the vertical adjustment module 1.
[0025] Among them, two slide bars 3 are installed on the inner wall of the horizontal adjustment module 2. The number of slide bars 3 is two. The sliding member 4 is slidably sleeved on the two slide bars 3. The structure inside the vertical adjustment module 1 corresponds to the structure inside the horizontal adjustment module 2. By providing two slide bars 3, the position of the sliding member 4 is restricted so that it can only translate along a fixed position.
[0026] Among them, a first motor 8 is installed at the left end of the horizontal adjustment module 2. A screw rod is installed on the output shaft of the first motor 8. The screw rod penetrates into the interior of the horizontal adjustment module 2. The sliding member 4 is threadedly sleeved on the screw rod. In order to ensure that the focus of the welding torch does not deviate from the weld bead, the left and right position recognition is performed by the laser displacement sensor 7, and the position compensation in the left and right directions is performed by the horizontal adjustment module 2.
[0027] Among them, a convex character-shaped through groove is formed on the surface of the joint between the displacement seat 5 and the sliding member 4. The welding torch body 6 is installed in the through groove. The wiring part of the laser displacement sensor 7 extends upward through the convex point of the through groove. By arranging the convex character-shaped through groove at the joint between the displacement seat 5 and the sliding member 4, when the displacement seat 5 and the sliding member 4 are disassembled, the welding torch body 6 can be disassembled and removed synchronously, and the internal installation structure is completely exposed, improving the convenience during maintenance.
[0028] Among them, the laser path emitted by the laser displacement sensor 7 forms a laser ray. The focus of the laser ray converges in the weld. The laser ray and the welding torch nozzle 9 are on the same plane. The laser ray is divided into two intersecting rays. It can delimit the recognition range according to the deviation between the focus and the welding point, and then feedback the position of the welded workpiece according to the calculation of the background processor, and then control the movement of the vertical adjustment module 1 and the horizontal adjustment module 2 respectively. The welding torch nozzle 9 is detachably arranged on the welding torch body 6, so that the welding torch nozzle 9 is convenient to replace after being damaged.
[0029] Among them, the control switches of the vertical adjustment module 1 and the horizontal adjustment module 2 are both arranged on the adjustment module in the background processor. The scanning data wiring of the laser displacement sensor 7 is connected to the background processor. By setting the laser displacement sensor 7 to identify the deviation between the weld and the focus of the laser beam, the relevant data is transmitted to the background processor for calculation, and the processor controls the operation of the vertical adjustment module 1 and the horizontal adjustment module 2 to achieve the coincidence of the weld and the focus of the laser beam.
[0030] Working principle: When using the laser welding torch to weld a workpiece, first place the laser welding torch directly above the joint of the workpiece. After starting, move along the joint. At this time, the laser rays emitted by the laser displacement sensor 7 respectively feedback the distance between the workpiece and the welding torch nozzle 9 and the position of the weld to the background processor. When the height of the welding torch nozzle 9 deviates, the background processor will control the second motor 10 to start working, so that the welding torch nozzle 9 is at an appropriate height on the weld. When the movement track of the welding torch nozzle 9 deviates from the joint, after feedback, the background processor will control the first motor 8 to start working, so that the welding torch nozzle 9 moves left and right to anchor the position at the joint, thereby achieving the purpose of welding.
[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A laser welding device capable of detecting weld seams, characterized in that, Including: A laser displacement sensor (7), a vertical adjustment module (1) and a horizontal adjustment module (2). The vertical adjustment module (1) and the horizontal adjustment module (2) are arranged opposite to each other in a cross shape. In front of the horizontal adjustment module (2), there is a displacement seat (5) for installing the welding torch body (6). The laser displacement sensor (7) is installed at the bottom of the displacement seat (5) directly in front of the welding torch body (6). The vertical adjustment module (1), the horizontal adjustment module (2), the welding torch body (6) and the laser displacement sensor (7) are all electrically connected to a background processor provided at the total control. A sliding member (4) is slidably arranged inside the horizontal adjustment module (2). The displacement seat (5) is installed on the front surface of the sliding member (4). The welding torch body (6) passes through the bottom of the displacement seat (5) and a welding torch nozzle (9) is installed. The laser path emitted by the laser displacement sensor (7) forms a laser ray, and the focus of the laser ray converges in the weld seam. The laser ray and the welding torch nozzle (9) are on the same plane.
2. The laser welding device capable of detecting weld seams according to claim 1, wherein A second motor (10) is installed at the top of the vertical adjustment module (1). A screw rod is installed on the output shaft of the second motor (10). The screw rod penetrates into the inside of the vertical adjustment module (1). The structure on the back of the middle part of the horizontal adjustment module (2) is threadedly sleeved on the screw rod. The horizontal adjustment module (2) is arranged to slide up and down with respect to the vertical adjustment module (1).
3. The laser welding device capable of detecting weld seams according to claim 1 or 2, characterized in that, Two slide bars (3) are installed on the inner wall of the horizontal adjustment module (2). The sliding member (4) is slidably sleeved on the two slide bars (3). The structure inside the vertical adjustment module (1) corresponds to the structure inside the horizontal adjustment module (2).
4. A laser welding device capable of detecting weld seams according to claim 1 or 2, characterized in that, A first motor (8) is installed at the left end of the horizontal adjustment module (2). A screw rod is installed on the output shaft of the first motor (8). The screw rod penetrates into the inside of the horizontal adjustment module (2). The sliding member (4) is threadedly sleeved on the screw rod.
5. The laser welding device capable of detecting weld seams according to claim 1, characterized in that, A convex-shaped through groove is formed on the surface of the joint between the displacement seat (5) and the sliding member (4). The welding torch body (6) is installed in the through groove. The wiring part of the laser displacement sensor (7) extends upward through the convex point of the through groove.
6. The laser welding device capable of detecting weld seams according to claim 1, wherein, The control switches of the vertical adjustment module (1) and the horizontal adjustment module (2) are both set on the adjustment module in the background processor. The scanning data wiring of the laser displacement sensor (7) is connected to the background processor.