A laser measuring positioning device for a laser welding machine

Abstract

The utility model discloses a laser measuring positioning device for laser welding machine, including support base plate, the upper portion longitudinal one end of support base plate is provided with electric rotating stage, and the other end is provided with fixed clamp, and the top of electric rotating stage is provided with support rotating seat, and one side pivot of support rotating seat is connected with support rotating arm, and one end pivot of support rotating arm is connected with L type rotating seat, and the top of L type rotating seat is installed with fixed rotating seat, and one end of fixed rotating seat is provided with first rotating shaft. The utility model has the advantages of reasonable design, simple and stable structure and strong practicality. The laser scanner and the laser range finder are provided with rotating motors, rotating shafts and telescopic devices, which can adjust the scanning and measuring workpieces at multiple angles, accurately position the welding position, improve the efficiency and quality, and avoid the laser scanner and the laser range finder from being easily affected by sparks during the welding process, thereby prolonging the service life.

Description

Technical Field

[0001] This utility model relates to the field of laser welding processing technology, specifically a laser measurement and positioning device for a laser welding machine. Background Technology

[0002] Laser welding is a cutting-edge welding technology that relies on a high-energy-density laser beam as a heat source. Its core principle lies in using a precision optical system to accurately focus the laser into an extremely small spot at the micrometer level, causing the material to locally heat up rapidly to a melting or even vaporized state in a very short time, forming a dense and strong molten pool, thereby achieving efficient bonding at the molecular level of the material.

[0003] In existing laser welding technologies, the workpieces to be processed are often complex and diverse in shape (such as curved surfaces, irregular profiles, multi-feature assemblies, etc.), making it difficult for the laser welding head to quickly and accurately position the welding position. This not only reduces the efficiency of laser welding processing but also easily leads to deviations in the welding position, affecting the quality of laser welding processing. Further development and improvement are needed. Utility Model Content

[0004] The purpose of this invention is to provide a laser measurement and positioning device for laser welding machines to solve the problems that existing laser welding machines have difficulty in quickly and accurately positioning the welding head, which reduces the efficiency of laser welding processing and easily leads to deviations in the welding position, affecting the quality of laser welding processing.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: A laser measurement and positioning device for a laser welding machine includes a supporting base plate. An electric rotary table is mounted at one longitudinal end of the upper part of the supporting base plate, and a fixed clamp is mounted at the other end. A supporting rotary seat is mounted on the top of the electric rotary table. A supporting rotary arm is connected to a rotating shaft on one side of the supporting rotary seat. An L-shaped rotary seat is connected to a rotating shaft at one end of the supporting rotary arm. A fixed rotary seat is mounted on the top of the L-shaped rotary seat. A first rotating shaft is mounted at one end of the fixed rotary seat, and a first rotating motor is mounted at the other end. The output end of the first rotating motor is connected to one end of the first rotating shaft. A rotating mounting seat is mounted on the other end of the first rotating shaft. One end of the rotating mounting seat has a mounting groove. A second rotating shaft is arranged between the inner surfaces of the two transverse sides of the mounting groove. The outer surface of one transverse side of the rotating mounting seat is provided with... A second rotary motor is provided, with its output end connected to one end of a second rotary shaft. A support mounting rod is provided radially on the outer surface of the second rotary shaft, and a laser welding head is installed at one end of the support mounting rod. A fixed mounting plate is provided between the second rotary shaft and the inner surface of the longitudinal side of the mounting groove. A dual-axis motor is provided on the top of the fixed mounting plate. A third rotary shaft is provided on both sides of the rotary mounting base in the lateral direction. One end of each of the two rotary shafts is connected to the two output ends of the dual-axis motor, and a rotary support plate is provided on the other end of each shaft. A rotary mounting plate is rotatably connected to one end of each rotary support plate. A laser scanner is provided on the top of the rotary mounting plate on one side of the rotary mounting base, and a laser rangefinder is provided on the top of the rotary mounting plate on the other side. A telescopic device is provided between the rotary support plate and the rotary mounting plate.

[0006] Furthermore, a control device is provided at one end of the support base plate, and the electric rotary table, the first rotary motor, the second rotary motor, the laser welding head, the dual-axis motor, the laser scanner, the laser rangefinder, and the telescopic device are all electrically connected to the control device.

[0007] Furthermore, the supporting rotating base and the supporting rotating arm, as well as the supporting rotating arm and the L-shaped rotating base, are rotatably connected by a rotating shaft. The rotating shaft is equipped with a drive motor, which is electrically connected to the control device to drive the supporting rotating arm and the L-shaped rotating base to rotate.

[0008] Furthermore, the rotating support plate and the rotating mounting plate are rotatably connected by a hinge shaft.

[0009] Furthermore, the rotating support plate and the rotating mounting plate are provided with a graphite-supported anti-splashing protective layer on the surface away from the telescopic device.

[0010] Furthermore, the telescopic device is an electric push rod or a hydraulic cylinder, with its two ends connected to the rotating support plate and the rotating mounting plate respectively via ball joints.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model has a reasonable design, simple and stable structure, and strong practicality; the laser scanner and laser rangefinder, through the cooperation of the first rotary motor and the first rotary shaft, and the rotary mounting plate structure connected to the rotary support plate by the telescopic device and the rotating shaft, can be rotated and adjusted to different angles to scan and measure the shape and size of the workpiece separately, accurately locate the welding position, and greatly improve welding efficiency and welding quality; at the same time, with the cooperation of the dual-axis motor and the third rotary shaft, the laser scanner and laser rangefinder can be rotated to the side away from the welding position, avoiding them from being easily affected by sparks generated during the welding process, improving their service life, and making it suitable for widespread use. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0014] In the diagram: 1-Support base plate, 2-Electric rotary table, 3-Fixed clamp, 4-Support rotary seat, 5-Support rotary arm, 6-L-shaped rotary seat, 7-Fixed rotary seat, 8-First rotary shaft, 9-First rotary motor, 10-Rotary mounting seat, 11-Mounting groove, 12-Second rotary shaft, 13-Second rotary motor, 14-Support mounting rod, 15-Laser welding head, 16-Dual-axis motor, 17-Rotary support plate, 18-Rotary mounting plate, 19-Laser scanner, 20-Laser rangefinder, 21-Telescopic device, 22-Control device. Detailed Implementation

[0015] 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.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Combination Figures 1 to 2 The laser measurement and positioning device for a laser welding machine shown includes a support base plate 1. An electric rotary table 2 is mounted longitudinally at one end of the upper part of the support base plate 1, and a fixing clamp 3 is mounted at the other end. A support rotary seat 4 is mounted on the top of the electric rotary table 2. A support rotary arm 5 is connected to one side of the support rotary seat 4 via a rotating shaft. An L-shaped rotary seat 6 is connected to one end of the support rotary arm 5 via a rotating shaft. A fixed rotary seat 7 is mounted on the top of the L-shaped rotary seat 6. A first rotating shaft 8 is mounted at one end of the fixed rotary seat 7, and a first rotary motor 9 is mounted at the other end. The output end of the first rotary motor 9 is connected to one end of the first rotating shaft 8. A rotary mounting seat 10 is mounted at the other end of the first rotating shaft 8. One end of the rotary mounting seat 10 has a mounting groove 11. A second rotating shaft 12 is positioned between the inner surfaces of the two transverse sides of the mounting groove 11. A second rotary motor 13 is mounted on the outer surface of one transverse side of the rotary mounting seat 10. The output end of the rotary motor 13 is connected to one end of the second rotary shaft 12. A support mounting rod 14 is provided radially on the outer surface of the second rotary shaft 12. A laser welding head 15 is installed at one end of the support mounting rod 14. A fixed mounting plate is provided between the second rotary shaft 12 and the inner surface of the longitudinal side of the mounting groove 11. A dual-axis motor 16 is provided on the top of the fixed mounting plate. A third rotary shaft is provided on both sides of the rotary mounting base 10. One end of each of the two rotary shafts is connected to the two output ends of the dual-axis motor 16, and the other end is provided with a rotary support plate 17. A rotary mounting plate 18 is rotatably connected to one end of the rotary support plate 17. A laser scanner 19 is provided on the top of the rotary mounting plate 18 on one side of the rotary mounting base 10, and a laser rangefinder 20 is provided on the top of the rotary mounting plate 18 on the other side. A telescopic device 21 is provided between the rotary support plate 17 and the rotary mounting plate 18.

[0018] A control device 22 is installed at one end of the support base plate 1. The electric rotary table 2, the first rotary motor 9, the second rotary motor 13, the laser welding head 15, the dual-axis motor 16, the laser scanner 19, the laser rangefinder 20, and the telescopic device 21 are all electrically connected to the control device 22. This device receives data transmitted from the laser scanner 19 and the laser rangefinder 20, and controls the working states of each of the electric rotary table 2, the first rotary motor 9, the second rotary motor 13, the laser welding head 15, the dual-axis motor 16, and the telescopic device 21. The support rotating seat 4 and the support rotating arm 5, as well as the support rotating arm 5 and the L-shaped rotating seat 6, are rotatably connected via rotating shafts. These rotating shafts are equipped with drive motors, which are electrically connected to the control device 22. These drive motors drive the support rotating arm 5 and the L-shaped rotating seat 6 to rotate. The rotating support arm 5 and the L-shaped rotating seat 6 are driven to rotate. The rotating support plate 17 and the rotating mounting plate 18 are rotatably connected by a hinge shaft to adjust the tilt angle of the laser scanner 19 and the laser rangefinder 20. The surface of the rotating support plate 17 and the rotating mounting plate 18 away from the telescopic device 21 is provided with a graphite-supported anti-splashing protective layer to protect the rotating support plate 17, the rotating mounting plate 18, and the laser scanner 19 and the laser rangefinder 20 mounted on them from splash corrosion, extend the service life of the equipment, and reduce maintenance costs. The telescopic device 21 is an electric push rod or a hydraulic cylinder, and its two ends are connected to the rotating support plate 17 and the rotating mounting plate 18 through ball joints, respectively. It can adapt to the angle change of the rotating mounting plate 18 during the telescopic process and avoid mechanical stress caused by rigid connection.

[0019] Working principle:

[0020] I. Initial Preparation Stage

[0021] The workpiece to be processed is placed on the support base plate and fixed in place using a clamping fixture to ensure stable position during welding. The electric rotary table can rotate the workpiece as needed, facilitating operation of the workpiece from different angles by the measurement and welding equipment.

[0022] II. Measurement and Positioning Stage

[0023] Multi-angle measurement and adjustment: The control device starts the drive motor between the support rotating seat and the support rotating arm, and between the support rotating arm and the L-shaped rotating seat. The rotating shaft drives the support rotating arm and the L-shaped rotating seat to rotate, adjusting the spatial position of the entire measuring welding mechanism, so that the laser scanner and laser rangefinder can approach the workpiece.

[0024] Simultaneously, the first rotary motor drives the first rotary shaft to rotate, causing the rotary mounting base to rotate. The second rotary motor drives the second rotary shaft to rotate, causing the support mounting rod and laser welding head to rotate, further adjusting the angles of the laser scanner and laser rangefinder.

[0025] Precise angle fine-tuning: The telescopic device (electric push rod or hydraulic cylinder) is connected to the rotating support plate and the rotating mounting plate through a ball joint. When the telescopic device extends or retracts, it drives the rotating mounting plate to rotate around the hinge axis. Combined with its own rotation on the rotating support plate, it enables fine-tuning of the tilt angle of the laser scanner and laser rangefinder, so that they can be perpendicular or parallel to the workpiece surface, ensuring the accuracy of the measurement data.

[0026] A laser scanner scans the workpiece's shape to acquire its three-dimensional contour data; a laser rangefinder measures the workpiece's key dimensions, and both transmit the data to a control device. The control device analyzes and processes the data using a preset program to calculate the accurate welding position coordinates.

[0027] III. Welding Execution Phase

[0028] The control device controls the first rotary motor, the second rotary motor, and the drive motors between the support rotating seat and the support rotating arm, and between the support rotating arm and the L-shaped rotating seat 6, based on the calculated welding position coordinates, thereby moving the laser welding head to the target welding position.

[0029] After adjustment, the control device activates the laser welding head, emitting a high-energy-density laser beam to weld the workpiece. During the welding process, if fine adjustments to the welding angle or position are needed, these can be made again using the aforementioned rotation and extension mechanism.

[0030] IV. Protection and Avoidance Phase

[0031] During the welding process, to prevent the laser scanner and laser rangefinder from being corroded by sparks, molten slag, and other spatter generated during welding, the control device activates a dual-axis motor. This motor drives a rotating support plate via a third rotating shaft, rotating the laser scanner and laser rangefinder to a side away from the welding position. Simultaneously, the graphite anti-spatter protective layer on the surfaces of the rotating support plate and rotating mounting plate further blocks spatter, protecting the measuring devices and extending their service life.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser measurement and positioning device for a laser welding machine, comprising a supporting base plate (1), wherein an electric rotary table (2) is provided at one longitudinal end of the upper part of the supporting base plate (1), and a fixed clamp (3) is provided at the other end; a supporting rotary seat (4) is provided on the top of the electric rotary table (2); a supporting rotary arm (5) is connected to one side of the supporting rotary seat (4) by a rotating shaft; an L-shaped rotary seat (6) is connected to one end of the supporting rotary arm (5) by a rotating shaft; a fixed rotary seat (7) is installed on the top of the L-shaped rotary seat (6); a first rotating shaft (8) is provided at one end of the fixed rotary seat (7), and a first rotating motor (9) is provided at the other end; the output end of the first rotating motor (9) is connected to one end of the first rotating shaft (8), characterized in that: A rotating mounting base (10) is installed at the other end of the first rotating shaft (8). One end of the rotating mounting base (10) has a mounting groove (11). A second rotating shaft (12) is arranged between the inner surfaces of the two sides of the mounting groove (11). A second rotating motor (13) is arranged on the outer surface of one side of the rotating mounting base (10). The output end of the second rotating motor (13) is connected to one end of the second rotating shaft (12). A support mounting rod (14) is arranged radially on the outer surface of the second rotating shaft (12). A laser welding head (15) is installed at one end of the support mounting rod (14). A fixing device is arranged between the second rotating shaft (12) and the inner surface of one side of the mounting groove (11). The mounting plate has a dual-axis motor (16) on its top. The rotating mounting base (10) has a third rotating shaft on each of its two lateral sides. One end of each of the two rotating shafts is connected to the two output ends of the dual-axis motor (16), and the other end is provided with a rotating support plate (17). One end of the rotating support plate (17) is rotatably connected to a rotating mounting plate (18). A laser scanner (19) is provided on the top of the rotating mounting plate (18) on one lateral side of the rotating mounting base (10), and a laser rangefinder (20) is provided on the top of the rotating mounting plate (18) on the other side. A telescopic device (21) is provided between the rotating support plate (17) and the rotating mounting plate (18).

2. The laser measurement and positioning device for a laser welding machine according to claim 1, characterized in that: A control device (22) is provided at one end of the support base plate (1). The electric rotary table (2), the first rotary motor (9), the second rotary motor (13), the laser welding head (15), the dual-axis motor (16), the laser scanner (19), the laser rangefinder (20), and the telescopic device (21) are all electrically connected to the control device (22).

3. The laser measurement and positioning device for a laser welding machine according to claim 2, characterized in that: The support rotating seat (4) and the support rotating arm (5) are rotatably connected by a rotating shaft, as are the support rotating arm (5) and the L-shaped rotating seat (6). The rotating shaft is equipped with a drive motor, which is electrically connected to the control device (22) to drive the support rotating arm (5) and the L-shaped rotating seat (6) to rotate.

4. The laser measurement and positioning device for a laser welding machine according to claim 1, characterized in that: The rotating support plate (17) and the rotating mounting plate (18) are rotatably connected by a hinge shaft.

5. A laser measurement and positioning device for a laser welding machine according to claim 1, characterized in that: The rotating support plate (17) and the rotating mounting plate (18) are provided with a graphite-supported anti-splashing protective layer on the side of the rotating support plate (17) away from the telescopic device (21).

6. The laser measurement and positioning device for a laser welding machine according to claim 1, characterized in that: The telescopic device (21) is an electric push rod or a hydraulic cylinder, and its two ends are connected to the rotating support plate (17) and the rotating mounting plate (18) respectively through ball joints.

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