A mobile laser positioning device for precision plate cutting

Abstract

The present application relates to plate positioning technical field, specifically to a kind of mobile laser positioning device for precision plate cutting, including linear motor and sliding seat, the shell bottom of the linear motor is fixedly installed with sliding seat;It further includes sliding block fixedly connected on the linear motor mobile, the sliding block is rotatably connected with mounting block, the mounting block is fixedly installed with guide rail, the mobile frame is slidably arranged on the guide rail, the mobile frame one side is equipped with laser projector, the guide rail is installed with pneumatic telescopic pipe, one end of the pneumatic telescopic pipe is connected with guide rail, the other end of the pneumatic telescopic pipe is connected with mobile frame.The present application is adjusted to the height of laser projector in vertical direction by linear motor, and the horizontal position is fine-tuned by cooperating pneumatic telescopic pipe drive, can flexibly control laser projection position, can be folded and stored to linear motor nearby after use, realize quick storage and save use space, it is convenient to move and multi-scene application.

Description

Technical Field

[0001] This invention relates to the field of sheet metal positioning technology, and specifically to a mobile laser positioning device for precision sheet metal cutting. Background Technology

[0002] In the field of precision sheet metal cutting, laser positioning technology is widely used due to its advantages such as high precision, non-contact operation, and visualization. Currently, common laser positioning methods mainly include two categories: linear laser positioning and laser projection positioning. Linear laser positioning projects a straight, visible beam of light onto the sheet metal surface using an emitter to guide straight-line cutting. However, when the cutting path involves complex or closed contours, laser projection positioning technology is required. This technology can precisely project a pre-defined cutting pattern onto the sheet metal surface in the form of multiple laser lines or closed optical paths, thus providing an intuitive and accurate reference path for subsequent cutting, significantly improving cutting accuracy and reducing offset errors.

[0003] However, current laser projection positioning equipment generally suffers from insufficient adaptability: on the one hand, most equipment adopts a fixed installation structure, which is only suitable for standardized working environments equipped with dedicated cutting machines. It is difficult to use in flexible or temporary cutting scenarios without fixed equipment support, thus limiting its application in diverse production scenarios. On the other hand, existing devices can only realize the projection function of laser graphics and cannot detect the placement status of the board itself. For example, it cannot determine whether the board is tilted or offset, which can easily lead to inconsistencies between the actual cutting path and the design path, causing problems such as cutting deformities, thereby affecting the overall cutting accuracy and consistency. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a mobile laser positioning device for precision sheet metal cutting.

[0005] The technical solution is as follows: A mobile laser positioning device for precision sheet metal cutting includes a linear motor and a sliding seat. The linear motor is vertically arranged, and the sliding seat is fixedly installed on the bottom of its housing. It also includes a slider fixedly connected to the moving part of the linear motor. A mounting block is rotatably connected to the slider. A guide rail is fixedly installed on the mounting block. A movable frame is slidably arranged on the guide rail. A laser projector for projection positioning is mounted on one side of the movable frame. A pneumatic telescopic tube is installed inside the guide rail. One end of the pneumatic telescopic tube is connected to the guide rail, and the other end is connected to the movable frame. The pneumatic telescopic tube is used to drive the movable frame to slide on the guide rail. A pneumatic connector for inflating and deflating the pneumatic telescopic tube is provided on the side wall of the mounting block. A first electric slide rail is fixedly connected to the side of the movable frame away from the laser projector. A horizontal detection component for detecting whether the sheet metal is placed horizontally is slidably arranged on the first electric slide rail.

[0006] Preferably, the level detection component includes a mounting bracket fixedly connected to the first electric slide rail slide. A rotating frame is rotatably connected to the bottom of the mounting bracket. A first motor is fixedly installed inside the mounting bracket. The output shaft of the first motor is connected to the rotating shaft of the rotating frame. First infrared rangefinders are symmetrically rotatably mounted on both sides of the rotating frame. The first infrared rangefinders are used to measure the distance between themselves and the board. By comparing whether the distance values ​​measured by the first infrared rangefinders on both sides to the surface of the board are consistent, it is determined whether the board is placed horizontally. A gearbox is installed on one side of the rotating frame. The output shafts on both sides of the gearbox are symmetrically connected to the corresponding first infrared rangefinders. A second motor is fixedly installed on the other side of the rotating frame. The output shaft of the second motor passes through the rotating frame and is connected to the input shaft of the gearbox.

[0007] Preferably, a right-angle bracket is fixedly connected to the housing near the mounting block at the lower part of the linear motor. The upper part of the right-angle bracket is curved upward at a right angle. The right-angle bracket is used to limit the folding and storage of the guide rail on the linear motor. A guide wheel is rotatably connected to the curved upper end of the right-angle bracket. When the linear motor drives the guide rail to move downward to the position of the right-angle bracket, the guide wheel at the upper end of the right-angle bracket will contact the guide rail. As the guide rail continues to move downward, it forces the mounting block and the guide rail to flip upward and store around the slider as the axis. The stored guide rail stably limits the right-angle bracket at the linear motor.

[0008] Preferably, the sliding seat is fixedly installed with telescopic feet that can be extended and adjusted in height at the four corners of the bottom. Near each telescopic foot, a caster wheel is rotatably installed on the bottom of the sliding seat, and the caster wheel is equipped with a braking device.

[0009] Preferably, a fixing plate is fixedly connected to one side of the linear motor housing, and a limiting strip is fixedly connected to the fixing plate facing the right-angle frame. The linear motor and the limiting strip are parallel, and the lower end of the limiting strip is higher than the position of the right-angle frame. The limiting strip is used to push the mounting block to make the guide rail unfold horizontally. When the linear motor drives the guide rail to move upward and is no longer limited by the right-angle frame, the upward-moving mounting block will be squeezed by the limiting strip. Subsequently, the mounting block and the guide rail will rotate downward and unfold around the slider as the rotation center. After unfolding, the limiting strip forms horizontal support and limitation for the mounting block, thereby ensuring the accuracy of subsequent horizontal detection and projection positioning.

[0010] Preferably, a mounting plate is fixedly connected to one side of the mounting block. The mounting plate is provided with a measuring component for measuring the length and width of the plate. The measuring component includes a guide plate rotatably connected to the mounting plate. A second electric slide rail is fixedly mounted parallel to the top of the guide plate. A right-angle block is slidably connected to the guide plate. The right-angle block is connected to the slide of the second electric slide rail. A measuring frame is rotatably connected to the right-angle block. The right-angle block limits the rotation of the measuring frame within a right-angle range. A third motor is fixedly mounted on the mounting plate. The output shaft of the third motor is connected to the rotating shaft of the guide plate. A second infrared rangefinder is provided on the side of the guide plate away from the right-angle block. The second infrared rangefinder is used to measure the distance between the measuring frame and the measuring plate.

[0011] Preferably, the measuring frame is slidably connected to a telescopic plate on the side away from the right-angle block. The telescopic plate is used to extend the measuring frame. The end of the telescopic plate away from the measuring frame is rotatably connected to a pulley. The pulley is used to roll the placement platform that contacts the plate, thereby reducing the friction between the telescopic plate and the placement platform.

[0012] Preferably, a magnetic block one is fixedly installed on one side of the upper part of the measuring frame, and a magnetic block two is fixedly installed on the top of the second electric slide rail housing. The magnetic poles of the magnetic block one and the magnetic block two are opposite. The measuring frame can be horizontally and stably stored on the guide plate by the mutual attraction of the magnetic blocks one and two of opposite polarity.

[0013] Preferably, a guide plate is fixedly provided on one side of the limiting strip, and a lifting plate is slidably connected to the guide plate. A fastening bolt is screwed onto the lifting plate to fix the lifting plate on the guide plate. A positioning plate is rotatably connected to the lifting plate. The end of the positioning plate away from the lifting plate is provided with a right-angle notch for positioning. The right-angle notch of the positioning plate is used for positioning the plate. When the positioning plate on the lifting plate is rotated and unfolded, the right-angle notch of the positioning plate can be accurately positioned at one of the top corners of the plate, so that one edge of the plate is precisely aligned with the second infrared rangefinder.

[0014] Beneficial effects:

[0015] 1. This invention uses a linear motor to adjust the vertical height of the laser projector, and a pneumatic telescopic tube to drive fine-tuning of its horizontal position, which can flexibly control the laser projection position. After use, it can be rotated and folded around the slider and stored near the linear motor, achieving quick storage and saving space, making it easy to move and apply in multiple scenarios.

[0016] 2. This invention can perform non-contact leveling of the board material at multiple positions in the horizontal and vertical directions using a leveling detection component, effectively determining whether the board material is placed flat and improving the accuracy of subsequent projection and measurement.

[0017] 3. The present invention can also automatically measure the length and width of the board through the measuring component. The third motor drives the guide plate and measuring frame to rotate, realizing the measurement of the board's longitudinal and transverse dimensions, thus improving the measurement efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram showing the stowed state of the components of the present invention, such as the guide rail, the movable frame, and the laser projector.

[0020] Figure 3 This diagram shows the connection relationship between the mounting block, guide rail, moving frame, and laser projector of this invention.

[0021] Figure 4 This is a schematic diagram showing the working relationship between the mobile frame, laser projector, and pneumatic telescopic tube of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of a specific component of the horizontal detection assembly of the present invention.

[0023] Figure 6 This is a schematic diagram showing the cooperative relationship between the slider, mounting block, guide rail, right-angle bracket, and guide wheel of the present invention.

[0024] Figure 7 This is a schematic diagram showing the cooperative relationship between the slider, mounting block, guide rail, and limiting strip of the present invention.

[0025] Figure 8 This is a diagram showing the connection relationship between the guide rail, mounting plate, measuring components, and measuring frame of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of a specific component of the measuring assembly of the present invention.

[0027] Figure 10 This is a diagram showing the positional relationship between the measuring frame, magnetic block one, and magnetic block two of the present invention.

[0028] Figure 11 This is a diagram showing the connection relationship between the limiting strip, guide plate, lifting plate, and positioning plate of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 100, sheet metal; 1, linear motor; 2, sliding seat; 201, telescopic support; 202, caster wheel; 3, slider; 4, mounting block; 5, guide rail; 6, moving frame; 7, laser projector; 8, pneumatic telescopic tube; 81, pneumatic connector; 9, first electric slide rail; 10, level detection assembly; 101, mounting frame; 102, rotating frame; 103, first motor; 104, first infrared rangefinder; 105, gearbox; 106, second... 11. Motor, 12. Right-angle bracket, 13. Guide wheel, 14. Fixing plate, 15. Limiting strip, 16. Mounting plate, 17. Measuring assembly, 18. Guide plate, 19. Second electric slide rail, 10. Right-angle block, 10. Third motor, 11. Second infrared rangefinder, 12. Measuring frame, 13. Telescopic plate, 14. Pulley, 15. Magnetic block one, 16. Magnetic block two, 17. Positioning plate, 18. Guide plate, 19. Lifting plate, 19. Fastening bolt. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] A mobile laser positioning device for precision sheet metal cutting, referring to Figures 1-4 As shown, the device includes a linear motor 1 and a sliding seat 2. The linear motor 1 is vertically arranged, and the sliding seat 2 is fixedly installed on the bottom of its housing. It also includes a slider 3 fixedly connected to the mover of the linear motor 1. A mounting block 4 is rotatably connected to the slider 3. A guide rail 5 is fixedly installed on the mounting block 4. A movable frame 6 is slidably arranged on the guide rail 5. A laser projector 7 for projection positioning is mounted on one side of the movable frame 6. A pneumatic telescopic tube 8 is installed inside the guide rail 5. One end of the pneumatic telescopic tube 8 is connected to the guide rail 5, and the other end of the pneumatic telescopic tube 8 is connected to the movable frame 6. The pneumatic telescopic tube 8 is used to drive the movable frame 6 to slide on the guide rail 5. A pneumatic connector 81 for charging and decharging air into the pneumatic telescopic tube 8 is provided on the side wall of the mounting block 4. A first electric slide rail 9 is fixedly connected to the side of the movable frame 6 away from the laser projector 7. A horizontal detection component 10 for detecting whether the plate 100 is placed horizontally is slidably arranged on the first electric slide rail 9.

[0032] Reference Figures 3-5As shown, the horizontal detection component 10 includes a mounting frame 101 fixedly connected to the slide table of the first electric slide rail 9. A rotating frame 102 is rotatably connected to the bottom of the mounting frame 101. A first motor 103 is fixedly installed inside the mounting frame 101. The output shaft of the first motor 103 is connected to the rotating shaft of the rotating frame 102. A first infrared rangefinder 104 is symmetrically rotatably mounted on both sides of the rotating frame 102. The first infrared rangefinder 104 is used to measure the distance between itself and the plate 100. By comparing whether the distance values ​​measured by the first infrared rangefinders 104 on both sides to the surface of the plate 100 are consistent, it is determined whether the plate 100 is placed horizontally. A gearbox 105 is installed on one side of the rotating frame 102. The output shafts of the gearbox 105 on both sides are symmetrically connected to the corresponding first infrared rangefinders 104. A second motor 106 is fixedly installed on the other side of the rotating frame 102. The output shaft of the second motor 106 passes through the rotating frame 102 and is connected to the input shaft of the gearbox 105.

[0033] Reference Figure 3 As shown, telescopic support legs 201 with adjustable height are fixedly installed at the four corners of the bottom of the sliding seat 2. Universal wheels 202 are rotatably installed at the bottom of the sliding seat 2 near each telescopic support leg 201. Universal wheels 202 are equipped with braking devices.

[0034] When projection positioning of the cut board 100 is required, the operator first uses the casters 202 at the bottom of the sliding seat 2 to easily move the entire device to a working position near the board 100. Then, the braking device is used to lock the casters 202, and the telescopic support legs 201 are adjusted to provide stable support. Subsequently, the vertically mounted linear motor 1 is started, which drives the slider 3 on its mover to rise and fall, thereby adjusting the vertical height of the entire assembly, including the guide rail 5 on the mounting block 4 and the moving frame 6, so that the laser projector 7 on the moving frame 6 is adjusted to a suitable projection height. Before projection, to further ensure positioning accuracy, the levelness of the board 100 can be checked: the first electric slide rail 9 on the moving frame 6 drives the entire assembly to achieve the desired levelness. The horizontal detection component 10 can be moved to different points above the plate 100. Then, the first motor 103 drives the rotating frame 102 and the two first infrared rangefinders 104 symmetrically mounted on it to rotate. In conjunction with the second motor 106, the detection angle of the two rangefinders is adjusted synchronously through the gearbox 105. By comparing the distance values ​​from the two first infrared rangefinders 104 to the surface of the plate 100 at multiple points and angles, it can be fully determined whether the plate 100 is placed horizontally in the horizontal and vertical directions. At the same time, air is charged and released into the pneumatic telescopic tube 8 through the pneumatic connector 81, so that the pneumatic telescopic tube 8 can extend and retract and drive the moving frame 6 to slide horizontally along the guide rail 5, thereby realizing the horizontal fine adjustment of the projection position of the laser projector 7. Thus, the pre-projection positioning and horizontal calibration preparation work is completed.

[0035] Reference Figure 6As shown, a right-angle bracket 11 is fixedly connected to the housing of the lower part of the linear motor 1 near the mounting block 4. The upper part of the right-angle bracket 11 is curved upward at a right angle. The right-angle bracket 11 is used to limit the guide rail 5 that is folded and stored on the linear motor 1. A guide wheel 12 is rotatably connected to the upper curved end of the right-angle bracket 11. When the linear motor 1 drives the guide rail 5 to move downward to the position of the right-angle bracket 11, the guide wheel 12 at the upper end of the right-angle bracket 11 will contact the guide rail 5. As the guide rail 5 continues to move downward, it forces the mounting block 4 and the guide rail 5 to flip upward and store around the slider 3 as the axis. After storage, the guide rail 5 stably limits the right-angle bracket 11 at the linear motor 1.

[0036] Reference Figure 6 and Figure 7 As shown, a fixing plate 13 is fixedly connected to one side of the housing of the linear motor 1. A limiting strip 14 is fixedly connected to the side of the fixing plate 13 facing the right-angle bracket 11. The linear motor 1 and the limiting strip 14 are parallel. The lower end of the limiting strip 14 is higher than the position of the right-angle bracket 11. The limiting strip 14 is used to push the mounting block 4 to make the guide rail 5 unfold horizontally. When the linear motor 1 drives the guide rail 5 to move upward and is no longer limited by the right-angle bracket 11, the upward-moving mounting block 4 will be squeezed by the limiting strip 14. Then the mounting block 4 and the guide rail 5 will rotate downward and unfold around the slider 3 as the rotation center. After unfolding, the limiting strip 14 forms horizontal support and limitation for the mounting block 4, thereby ensuring the accuracy of subsequent horizontal detection and projection positioning.

[0037] Reference Figure 8 and Figure 9 As shown, a mounting plate 15 is fixedly connected to one side of the mounting block 4. A measuring component 16 for measuring the length and width of the plate 100 is provided on the mounting plate 15. The measuring component 16 includes a guide plate 161 rotatably connected to the mounting plate 15. A second electric slide rail 162 is fixedly and parallel to the top of the guide plate 161. A right-angle block 163 is slidably connected to the guide plate 161. The right-angle block 163 is connected to the slide of the second electric slide rail 162. A measuring frame 17 is rotatably connected to the right-angle block 163. The right-angle block 163 limits the measuring frame 17 to rotate within a right angle range. A third motor 164 is fixedly installed on the mounting plate 15. The output shaft of the third motor 164 is connected to the rotating shaft of the guide plate 161. A second infrared rangefinder 165 is provided on the side of the guide plate 161 away from the right-angle block 163. The second infrared rangefinder 165 is used to measure the distance between the guide plate 161 and the measuring frame 17.

[0038] When measuring the plate 100, first keep one end of the plate 100 flush with the second infrared rangefinder 165, then rotate the measuring frame 17 vertically downwards to unfold it. The second electric slide rail 162 then drives the measuring frame 17 to slide and align with the other end of the plate 100. Then, measure the distance between the second infrared rangefinder 165 and the measuring frame 17 to obtain the longitudinal dimension of the plate 100. Subsequently, the third motor 164 drives the entire guide plate 161 and the second electric slide rail 162 to rotate 90 degrees, which can also measure the transverse dimension of the plate 100.

[0039] Reference Figure 9 As shown, a telescopic plate 171 is slidably connected to the side of the measuring frame 17 away from the right-angle block 163. The telescopic plate 171 is used to extend the measuring frame 17. A pulley 172 is rotatably connected to the end of the telescopic plate 171 away from the measuring frame 17. The pulley 172 is used to roll the placement platform of the plate 100 to reduce the friction between the telescopic plate 171 and the placement platform.

[0040] Reference Figure 9 and Figure 10 As shown, a magnetic block 18 is fixedly installed on one side of the upper part of the measuring frame 17, and a magnetic block 181 is fixedly installed on the top of the housing of the second electric slide rail 162. The magnetic poles of the magnetic block 18 and the magnetic block 181 are opposite. The measuring frame 17 can be horizontally and stably stored on the guide plate 161 by the mutual attraction of the opposite magnetic blocks 18 and 181.

[0041] Reference Figure 1 , Figure 8 and Figure 11 As shown, a guide plate 191 is fixedly installed on one side of the limiting strip 14. A lifting plate 192 is slidably connected to the guide plate 191. A fastening bolt 193 is screwed onto the lifting plate 192. The fastening bolt 193 is used to fix the lifting plate 192 on the guide plate 191. A positioning plate 19 is rotatably connected to the lifting plate 192. The end of the positioning plate 19 away from the lifting plate 192 is provided with a right-angle notch for positioning. The right-angle notch of the positioning plate 19 is used for positioning the plate 100. In use, the positioning plate 19 on the lifting plate 192 is rotated and unfolded. At this time, the right-angle notch of the positioning plate 19 can be accurately positioned at one corner of the plate 100, so that one edge of the plate 100 is precisely aligned with the second infrared rangefinder 165.

[0042] After completing the preparatory work such as positioning and leveling, the dimensions of the plate 100 can be measured. The operator first slides the lifting plate 192 on the limit bar 14, and then rotates and unfolds the positioning plate 19 on the lifting plate 192. Using the right-angle notch at the end of the positioning plate 19, a reference angle of the plate 100 is physically and precisely locked, thereby ensuring that one edge of the plate 100 is precisely aligned with the second infrared rangefinder 165 in the measuring assembly 16. Then, the measuring frame 17 is rotated downward from the storage position of the guide plate 161 and unfolded. Subsequently, the second... The electric slide rail 162 drives the right-angle block 163 connected to the measuring frame 17 to slide along the guide plate 161, causing the telescopic plate 171 and pulley 172 at the end of the measuring frame 17 to move towards the opposite side of the plate 100 until the telescopic plate 171 is aligned with the edge of the plate 100. At this time, the second infrared rangefinder 165 accurately measures the fixed distance between itself and the measuring frame 17, which is the length of the plate 100. Subsequently, the third motor 164 on the mounting plate 15 starts, driving the entire guide plate 161 along with the second electric slide rail 162. The slide rail 162 and measuring frame 17 rotate 90 degrees, and the dimensions of the board 100 in another direction can be quickly measured using the same process. After obtaining accurate data on the position, horizontal orientation, and length and width dimensions of the board 100, the laser projector 7 projects a high-precision cutting outline or baseline onto the surface of the board 100 based on system calculations. This allows personnel to pre-position the cutting state of the board 100. After completing the measurement and projection of the board 100, the linear motor 1 drives the slider 3 to descend, causing the guide rail 5 to contact and press against the guide wheel at the upper end of the right-angle frame 11. On step 12, under the action of the lever, the mounting block 4 drives the entire guide rail 5 to rotate upward around the axis of the slider 3, so that the guide rail 5 is stably placed close to the housing of the linear motor 1 and is stably limited by the right angle bracket 11, so that the entire positioning device can be quickly stored and the operator can easily move the device. When it needs to be unfolded for use again, the linear motor 1 lifts the slider 3, and the guide rail 5 automatically rotates downward under the pressure of gravity and the limit bar 14 until it is firmly supported by the limit bar 14 and locked in a completely horizontal working position, ensuring the accuracy and convenience of the device for the next use.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile laser positioning device for precision sheet metal cutting, comprising a linear motor (1) and a sliding base (2) fixedly mounted on its bottom; characterized in that, It also includes a slider (3) fixed to the mover of the linear motor (1), a mounting block (4) rotatably connected to the slider (3), a guide rail (5) fixedly mounted on the mounting block (4), a movable frame (6) slidably mounted on the guide rail (5), a laser projector (7) mounted on one side of the movable frame (6), a pneumatic telescopic tube (8) installed inside the guide rail (5), one end of the pneumatic telescopic tube (8) connected to the guide rail (5), and the other end of the pneumatic telescopic tube (8) connected to the movable frame (6). The pneumatic telescopic tube (8) is used to drive the movable frame (6) to slide on the guide rail (5). A pneumatic connector (81) for charging and discharging air into the pneumatic telescopic tube (8) is provided on the side wall of the mounting block (4). A first electric slide rail (9) is fixedly connected to the side of the movable frame (6) away from the laser projector (7). A horizontal detection component (10) for detecting whether the plate (100) is placed horizontally is slidably mounted on the first electric slide rail (9). The horizontal detection component (10) includes a mounting bracket (101) fixed to the slide of the first electric slide rail (9). A rotating frame (102) is rotatably connected to the bottom of the mounting bracket (101). A first motor (103) is installed inside the mounting bracket (101). The output shaft of the first motor (103) is connected to the rotating shaft of the rotating frame (102). A first infrared rangefinder (104) is symmetrically mounted on both sides of the rotating frame (102). The first infrared rangefinder (104) is used to measure the distance between itself and the plate (100). A gearbox (105) is installed on one side of the rotating frame (102). The output shafts on both sides of the gearbox (105) are symmetrically connected to the corresponding first infrared rangefinder (104). A second motor (106) is fixedly mounted on the other side of the rotating frame (102). The output shaft of the second motor (106) passes through the rotating frame (102) and is connected to the input shaft of the gearbox (105). The sliding seat (2) is fixedly installed with telescopic support feet (201) that can be extended and retracted to adjust the height at the four corners of the bottom. The sliding seat (2) is also rotatably installed with casters (202) near each telescopic support foot (201). A mounting plate (15) is fixedly connected to one side of the mounting block (4). A measuring component (16) for measuring the length and width of the plate (100) is provided on the mounting plate (15). The measuring component (16) includes a guide plate (161) rotatably connected to the mounting plate (15). A second electric slide rail (162) is fixedly arranged parallel to the top of the guide plate (161). A right-angle block (163) is slidably connected to the guide plate (161). The right-angle block (163) is connected to the slide of the second electric slide rail (162). A measuring frame (17) is rotatably connected to the right-angle block (163). A third motor (164) is fixedly installed on the mounting plate (15). The output shaft of the third motor (164) is connected to the rotating shaft of the guide plate (161). A second infrared rangefinder (165) is provided on the side of the guide plate (161) away from the right-angle block (163). The second infrared rangefinder (165) is used to measure the distance between the guide plate (161) and the measuring frame (17). The measuring frame (17) is slidably connected to a telescopic plate (171) on the side away from the right-angle block (163), and a pulley (172) is rotatably connected to the end of the telescopic plate (171) away from the measuring frame (17).

2. The mobile laser positioning device for precision sheet metal cutting according to claim 1, characterized in that, A right-angle bracket (11) is fixed to the housing of the lower part of the linear motor (1) near the mounting block (4). The right-angle bracket (11) is used to limit the folding and storage of the guide rail (5) on the linear motor (1). The upper part of the right-angle bracket (11) is rotatably connected to a guide wheel (12).

3. A mobile laser positioning device for precision sheet metal cutting according to claim 2, characterized in that, A fixing plate (13) is fixedly connected to one side of the housing of the linear motor (1). A limiting strip (14) is fixedly connected to the side of the fixing plate (13) facing the right angle frame (11). The linear motor (1) and the limiting strip (14) are parallel. The lower end of the limiting strip (14) is higher than the position of the right angle frame (11). The limiting strip (14) is used to horizontally limit the mounting block (4) and the guide rail (5).

4. A mobile laser positioning device for precision sheet metal cutting according to claim 3, characterized in that, A magnetic block one (18) is fixedly installed on one side of the upper part of the measuring frame (17), and a magnetic block two (181) is fixedly installed on the top of the housing of the second electric slide rail (162). The magnetic poles of the magnetic block one (18) and the magnetic block two (181) are opposite.

5. A mobile laser positioning device for precision sheet metal cutting according to claim 4, characterized in that, A guide plate (191) is fixedly provided on one side of the limiting strip (14). A lifting plate (192) is slidably connected to the guide plate (191). A fastening bolt (193) is screwed onto the lifting plate (192). The fastening bolt (193) is used to fix the lifting plate (192) on the guide plate (191). A positioning plate (19) is rotatably connected to the lifting plate (192). A right-angle notch for positioning is provided at one end of the positioning plate (192) away from the lifting plate (192). The right-angle notch of the positioning plate (19) is used for positioning the plate (100).

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