A plate laser cutting machine and method based on multi-modal positioning

Abstract

The present invention discloses a plate laser cutting machine and method based on multi-modal positioning, which relates to the technical field of plate laser cutting equipment, and includes a laser cutting unit, four plate edge positioning components, a cutting follow-up support cooling component, and a chip-based multi-modal positioning controller. The present invention adopts side movable support positioning. After completing positioning and clamping, the multi-modal positioning controller controls the plane moving part of the plane moving unit of the cutting follow-up support cooling component to move, so that the laser avoidance slit on a top clamping block component is located below the initial cutting point of the plate to be cut, controls the electric rotating mechanism so that one side of the laser avoidance slit is located below the initial cutting point, and the other side is consistent with the direction of the cutting trajectory line, and controls the blowing component to start blowing, so as to provide support for the cutting part to prevent deformation during the laser cutting process, and perform follow-up cooling and heat dissipation, accelerate the dissipation of residual heat in the cutting part, reduce the deformation, and adapt to different laser cutting trajectories.

Description

Technical Field

[0001] The present invention relates to the technical field of plate laser cutting equipment, and in particular to a plate laser cutting machine and method based on multi-modal positioning. Background Art

[0002] The thin plate laser cutting machine is a highly efficient automated cutting equipment, which is widely used in metal processing, electronic manufacturing, automobile manufacturing, mold manufacturing, advertising logo and other industries. It uses a high energy density laser beam as a cutting tool, which can accurately and quickly cut various thin plate materials such as stainless steel, carbon steel, aluminum plate, copper plate, plastic, etc.

[0003] The working principle of the thin plate laser cutting machine is: the laser generates a high-power density laser beam, which is focused onto the surface of the thin plate material through the optical system, so that the thin plate material reaches the melting point or vaporization point in a very short time, thereby achieving cutting.

[0004] In order to ensure the cutting accuracy of thin plates, more precise positioning is required. At present, the positioning of traditional laser cutting machines is mainly achieved by supporting parts, lateral limiters and clamping parts. However, this traditional positioning method has limited positioning accuracy. During laser cutting, the edge of the thin plate in the cutting area will be deformed. The deformation will be aggravated under the influence of high temperature residue from laser cutting. In addition, the supporting parts generally adopt a serrated vertical plate structure. After several cuts, more or less welding residues will remain on the top of it, which will affect the flatness of the supporting surface and thus affect the cutting accuracy.

[0005] Therefore, it is urgent to design a positioning device that can meet different laser cutting requirements for use in plate laser cutting machines to improve cutting accuracy and reduce laser cutting deformation. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a plate laser cutting machine and method based on multi-modal positioning. The following technical solutions are adopted:

[0007] A plate laser cutting machine based on multi-modal positioning comprises a laser cutting unit, four plate edge positioning components, a cutting follow-up support cooling component and a chip-based multi-modal positioning controller, wherein the four plate edge positioning components surround the laser cutting unit and are used to support the four edges of the plate to be cut and press and position the plate, and the plate edge positioning component comprises a linear motion mechanism, a support column and a pressing mechanism, wherein the bottom of the support column is mounted on the top surface of the linear motion part of the linear motion mechanism and moves following the linear motion part, and the housing of the pressing mechanism is mounted on the side wall of the support column, and when the pressing part of the pressing mechanism is pressed downward, the edge of the plate to be cut is pressed against the top surface of the support column;

[0008] The cutting follow-up support cooling assembly includes a plane moving unit, a telescopic mechanism, an electric rotating mechanism, a clamping block assembly, and a blowing assembly. The plane moving unit is installed in the middle position of four plate edge positioning assemblies, and the bottom of the telescopic mechanism is installed on the top of the plane moving part of the plane moving unit, and follows the plane moving part to move in the plane. The base of the electric rotating mechanism is installed on the telescopic part of the telescopic mechanism. The clamping block assembly is detachably installed on the rotating part of the electric rotating mechanism. When the telescopic part is extended upward, the clamping block assembly supports the cutting area of ​​the plate to be cut. The blowing assembly is installed on the side of the clamping block assembly, and the blowing head is aimed at the bottom surface of the plate to be cut. The multi-modal positioning controller is communicated with the laser cutting unit to collect cutting action execution data, and controls the execution actions of the plate edge positioning assembly, the plane moving unit, the telescopic mechanism, the electric rotating mechanism and the blowing assembly according to the cutting action execution data.

[0009] By adopting the above technical solution, different from the traditional bottom support positioning mode, in order to reduce the deformation during the welding process, the side movable support positioning is adopted, and the linear movement mechanism of the four plate edge positioning components can be controlled according to the size of the plate to be cut, so that the four top clamping block components can support the four corners of the plate to be cut. After the plate to be cut is placed in the set position of the four top clamping block components, the four corners of the plate to be cut can be clamped by the clamping mechanism, so as to avoid the movement and deformation of the plate;

[0010] After completing the positioning and clamping, the multimodal positioning controller controls the movement of the planar moving part of the planar moving unit of the cutting follow-up support cooling component, so that the laser avoidance slit on a clamping block component is located below the initial cutting point of the plate to be cut, and controls the electric rotation mechanism so that one side of the laser avoidance slit is located below the initial cutting point and the other side is consistent with the direction of the cutting trajectory line, and controls the blowing component to start blowing, so that during the laser cutting process, support is provided for the cutting part to prevent deformation while follow-up cooling and heat dissipation are performed, thereby accelerating the dissipation of residual heat in the cutting part, further reducing the deformation, and can adapt to different laser cutting trajectories.

[0011] Optionally, the laser cutting unit includes a gantry support frame, a laser cutting machine and a control computer. The laser cutting machine is installed on the gantry support frame and is located in the middle of four plate edge positioning components. The control computer controls the laser cutting head of the laser cutting machine to perform laser cutting on the fixed plate to be cut according to the cutting trajectory. The control computer is communicatively connected with the multimodal positioning controller.

[0012] By adopting the above technical solution, the size parameters and cutting data of the plate to be cut can be input through the control computer, so that the laser cutting trajectory data can be generated.

[0013] Optionally, the linear moving mechanism is an electric linear slide, and the clamping mechanism is an electric cylinder clamping mechanism.

[0014] By adopting the above technical solution, the electric linear slide is combined with the electric cylinder clamping mechanism to achieve high-precision support and clamping.

[0015] Optionally, the plate edge positioning assembly also includes a plate support block, the bottom of which is detachably mounted on the top surface of the support column, the top surface of the plate support block is provided with anti-slip grooves, and the top surface heights of the plate support blocks of the four plate edge positioning assemblies are consistent after installation.

[0016] By adopting the above technical solution, the anti-slip grooves on the top of the plate support block can prevent movement after positioning and pressing, and a positioning angle plate or a positioning arc plate can be set at the corner of the top surface of the plate support block, which can be replaced when cutting plates of different specifications.

[0017] Optionally, the planar moving unit is a servo electric cross slide, the slider of the servo electric cross slide is the planar moving part, the telescopic mechanism is a servo electric cylinder, the telescopic rod is the telescopic part, the electric rotating mechanism is an electric rotating platform, and the turntable is the rotating part.

[0018] By adopting the above technical solution, the servo electric cross slide can achieve high-precision planar displacement, and the electric rotating mechanism can adjust the orientation of the clamping block assembly.

[0019] Optionally, the clamping block assembly includes a base plate and a pair of vertical clamping plates, wherein the base plate is detachably mounted on the telescopic part of the telescopic mechanism, the bottoms of the pair of vertical clamping plates are respectively mounted on the top surface of the base plate, the pair of vertical clamping plates are arranged in parallel, and a laser avoidance gap is formed between the pair of vertical clamping plates, and the laser avoidance gap is located below the cutting area of ​​the plate to be cut.

[0020] Optionally, the length of the vertical tightening plate is greater than 200 mm, the height is greater than 200 mm, and the width of the laser avoidance gap between a pair of vertical tightening plates is greater than 100 mm.

[0021] By adopting the above technical solution, the length of the vertical clamping plate is greater than 200mm, which can provide a cutting track travel of about 200mm within one support cycle. When it is about to exceed the laser avoidance gap range of the clamping block assembly, the telescopic mechanism retracts, and the planar moving unit and the electric rotation mechanism cooperate to make the laser avoidance gap of a pair of vertical clamping plates located below the cutting area of ​​the plate to be cut. In this way, the plate to be cut is always provided with follow-up cutting part support and follow-up heat dissipation, which can reduce deformation caused by laser cutting.

[0022] Optionally, the blowing pipe of the blowing assembly is installed on the side wall of the vertical top tightening plate, and the blowing port is aligned with the laser avoidance gap between a pair of vertical top tightening plates.

[0023] By adopting the above technical solution, the blowing component can be a combination of a fan and an air duct, which can directly blow air to the laser avoidance seam and promptly remove the heat from the cutting area of ​​the plate to be cut.

[0024] Optionally, the multimodal positioning controller includes a memory, an instruction chip and a control chip. The memory is communicated with the control computer to collect cutting action execution data. The instruction chip generates control instructions for the plate edge positioning component, the plane moving unit and the telescopic mechanism according to the cutting action execution data and stores them in the memory. The control chip is communicated with the memory to call the control instructions to control the execution actions of the plate edge positioning component, the plane moving unit, the telescopic mechanism and the blowing component, so that the laser avoidance gap between a pair of vertical tightening plates during the laser cutting process is always located below the cutting area of ​​the plate to be cut.

[0025] By adopting the above technical solution, the control chip can automatically control the execution actions of the plate edge positioning component, the plane moving unit, the telescopic mechanism and the blowing component according to the control instructions, thereby realizing automatic positioning and clamping, realizing automatic control of follow-up support cooling, and reducing plate deformation caused by laser cutting.

[0026] A welding control method for a plate laser cutting machine based on multi-modal positioning, using a plate laser cutting machine based on multi-modal positioning to perform laser cutting on a plate to be cut, comprising the following steps:

[0027] Step 1, inputting the size data of the original plate to be cut and the laser cutting parameters through the control computer, the control computer generates the cutting action execution data, and the multi-modal positioning controller interacts with the control computer to exchange the cutting action execution data;

[0028] Step 2: The multi-modal positioning controller controls the linear moving mechanism of the four plate edge positioning assemblies to move, so that the top plate support blocks of the four plate edge positioning assemblies are located at the four corners of the plate to be cut, controls the clamping mechanism to open, places the plate to be cut on the upper surface of the top plate support blocks of the four plate edge positioning assemblies, and then controls the clamping mechanism to clamp;

[0029] Step 3: The multi-modal positioning controller controls the plane moving part of the plane moving unit to move, so that the laser avoidance gap between the pair of vertical tightening plates is located below the initial cutting point of the plate to be cut, controls the electric rotating mechanism so that one side of the laser avoidance gap is located below the initial cutting point and the other side is consistent with the direction of the cutting trajectory line, controls the telescopic part of the telescopic mechanism to extend, the top surface of the pair of vertical tightening plates presses against the bottom surface of the plate to be cut, and controls the blowing assembly to start blowing;

[0030] Step 4, the control computer controls the laser cutting head of the laser cutting machine to start cutting. When the cutting trajectory line is about to exceed the laser avoidance seam, the multi-modal positioning controller controls the telescopic part of the telescopic mechanism to retract, and repeats steps 3 and 4 many times until the entire laser cutting process is completed.

[0031] In summary, the present invention includes at least one of the following beneficial technical effects:

[0032] The present invention can provide a plate laser cutting machine and method based on multi-modal positioning, which adopts side movable support positioning, controls the linear movement mechanism of four plate edge positioning components according to the size of the plate to be cut, so that four top clamping block components can support the four corners of the plate to be cut, and after the plate to be cut is placed at the set position of the four top clamping block components, the four corners of the plate to be cut are clamped by the clamping mechanism, so that the movement and deformation of the plate can be avoided;

[0033] After completing the positioning and clamping, the multimodal positioning controller controls the movement of the planar moving part of the planar moving unit of the cutting follow-up support cooling component, so that the laser avoidance slit on a clamping block component is located below the initial cutting point of the plate to be cut, and controls the electric rotation mechanism so that one side of the laser avoidance slit is located below the initial cutting point and the other side is consistent with the direction of the cutting trajectory line, and controls the blowing component to start blowing, so as to provide support for the cutting part to prevent deformation during the laser cutting process, and perform follow-up cooling and heat dissipation, thereby accelerating the dissipation of residual heat in the cutting part, further reducing the deformation, and adapting to different laser cutting trajectories. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a plate laser cutting machine based on multi-modal positioning of the present invention;

[0035] Figure 2 It is a structural schematic diagram of a plate edge positioning component of a plate laser cutting machine based on multi-modal positioning of the present invention;

[0036] Figure 3 It is a structural schematic diagram of a plate laser cutting machine cutting a follow-up support cooling assembly based on multi-modal positioning;

[0037] Figure 4 It is a schematic diagram of the connection principle of various electrical components of a plate laser cutting machine based on multi-modal positioning of the present invention.

[0038] Explanation of the reference numerals in the accompanying drawings: 11. Linear moving mechanism; 12. Support column; 13. Clamping mechanism; 14. Plate supporting block; 21. Planar moving unit; 22. Telescopic mechanism; 23. Electric rotating mechanism; 24. Clamping block assembly; 241. Base plate; 242. Vertical clamping plate; 25. Blowing assembly; 31. Memory; 32. Instruction chip; 33. Control chip; 8. Laser cutting unit; 81. Gantry support frame; 82. Laser cutting machine; 83. Control computer; 100. Plate to be cut. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0040] The embodiment of the present invention discloses a plate laser cutting machine and method based on multi-modal positioning.

[0041] Reference Figure 1 - Figure 4 , Embodiment 1, a plate laser cutting machine based on multi-modal positioning, comprising a laser cutting unit 8, four plate edge positioning components, a cutting follow-up support cooling component and a chip-based multi-modal positioning controller, the four plate edge positioning components surround the laser cutting unit 8, and are used to support the four edges of the plate 100 to be cut, and press and position it, the plate edge positioning component comprises a linear moving mechanism 11, a support column 12 and a pressing mechanism 13, the bottom of the support column 12 is mounted on the top surface of the linear moving part of the linear moving mechanism 11, and moves with the linear moving part, the shell of the pressing mechanism 13 is mounted on the side wall of the support column 12, and when the pressing part of the pressing mechanism 13 is pressed down, the edge of the plate 100 to be cut is pressed against the top surface of the support column 12;

[0042] The cutting follow-up support cooling assembly includes a plane moving unit 21, a telescopic mechanism 22, an electric rotating mechanism 23, a clamping block assembly 24, and a blowing assembly 25. The plane moving unit 21 is installed in the middle position of the four plate edge positioning assemblies. The bottom of the telescopic mechanism 22 is installed on the top of the plane moving part of the plane moving unit 21, and follows the plane moving part to move in the plane. The base of the electric rotating mechanism 23 is installed on the telescopic part of the telescopic mechanism 22. The clamping block assembly 24 is detachably installed on the rotating part of the electric rotating mechanism 23. When the telescopic part is extended upward, the clamping block assembly 24 supports the cutting area of ​​the plate 100 to be cut. The blowing assembly 25 is installed on the side of the clamping block assembly 24, and the blowing head is aimed at the bottom surface of the plate 100 to be cut. The multi-modal positioning controller is communicated with the laser cutting unit 8 to collect cutting action execution data, and controls the execution actions of the plate edge positioning assembly, the plane moving unit 21, the telescopic mechanism 22, the electric rotating mechanism 23 and the blowing assembly 25 according to the cutting action execution data.

[0043] Different from the traditional bottom support positioning mode, in order to reduce the deformation during the welding process, the side movable support positioning is adopted. According to the size of the plate 100 to be cut, the linear moving mechanism 11 of the four plate edge positioning components can be controlled to move, so that the four top clamping block components 24 can support the four corners of the plate 100 to be cut. After the plate 100 to be cut is placed at the set position of the four top clamping block components 24, the four corners of the plate 100 to be cut can be clamped by the clamping mechanism 13, so as to avoid the movement and deformation of the plate;

[0044] After completing the positioning and clamping, the multimodal positioning controller controls the movement of the planar moving part of the planar moving unit 21 of the cutting follow-up support cooling component, so that the laser avoidance slit on a clamping block component 24 is located below the initial cutting point of the plate 100 to be cut, and controls the electric rotating mechanism 23 so that one side of the laser avoidance slit is located below the initial cutting point and the other side is consistent with the direction of the cutting trajectory line, and controls the blowing component 25 to start blowing, so that during the laser cutting process, support is provided for the cutting part to prevent deformation while follow-up cooling and heat dissipation are performed, thereby accelerating the dissipation of residual heat in the cutting part, further reducing the deformation, and adapting to different laser cutting trajectories.

[0045] Embodiment 2, the laser cutting unit 8 includes a gantry support frame 81, a laser cutting machine 82 and a control computer 83. The laser cutting machine 82 is installed on the gantry support frame 81 and is located in the middle of four plate edge positioning components. The control computer 83 controls the laser cutting head of the laser cutting machine 82 to perform laser cutting on the fixed plate 100 to be cut according to the cutting trajectory. The control computer 83 is communicatively connected with the multimodal positioning controller.

[0046] The size parameters and cutting data of the plate 100 to be cut can be input through the control computer 83, so that the laser cutting trajectory data can be generated.

[0047] In the third embodiment, the linear moving mechanism 11 is an electric linear slide, and the clamping mechanism 13 is an electric cylinder clamping mechanism.

[0048] The electric linear slide is combined with the electric cylinder clamping mechanism to achieve high-precision support and clamping.

[0049] In embodiment 4, the plate edge positioning assembly also includes a plate support block 14, the bottom of which is detachably mounted on the top surface of the support column 12, and the top surface of the plate support block 14 is provided with anti-slip grooves. After the plate support blocks 14 of the four plate edge positioning assemblies are installed, the top surface heights are consistent.

[0050] The anti-slip grooves on the top of the plate support block 14 can prevent movement after positioning and pressing. Positioning angle plates or positioning arc plates can also be set at the top corners of the plate support block 14, which can be replaced when cutting plates of different specifications.

[0051] In Example 5, the plane moving unit 21 is a servo electric cross slide, the slider of the servo electric cross slide is the plane moving part, the telescopic mechanism 22 is a servo electric cylinder, the telescopic rod is the telescopic part, the electric rotating mechanism 23 is an electric rotating platform, and the turntable is the rotating part.

[0052] The servo electric cross slide can achieve high-precision plane displacement, and the electric rotating mechanism 23 can adjust the direction of the tightening block assembly 24.

[0053] Embodiment 6, the clamping block assembly 24 includes a base plate 241 and a pair of vertical clamping plates 242, the base plate 241 is detachably mounted on the telescopic portion of the telescopic mechanism 22, the bottoms of the pair of vertical clamping plates 242 are respectively mounted on the top surface of the base plate 241, the pair of vertical clamping plates 242 are arranged in parallel, and a laser avoidance gap is formed between the pair of vertical clamping plates 242, and the laser avoidance gap is located below the cutting area of ​​the plate 100 to be cut.

[0054] In Example 7, the length of the vertical tightening plate 242 is greater than 200 mm, the height is greater than 200 mm, and the width of the laser avoidance gap between a pair of vertical tightening plates 242 is greater than 100 mm.

[0055] The length of the vertical clamping plate 242 is greater than 200mm, which can provide a cutting track travel of about 200mm within one support cycle. When it is about to exceed the laser avoidance gap range of the clamping block assembly 24, the telescopic mechanism 22 retracts, and the planar moving unit 21 and the electric rotating mechanism 23 cooperate to make the laser avoidance gap of a pair of vertical clamping plates 242 located below the cutting area of ​​the plate 100 to be cut. In this way, the plate 100 to be cut is always provided with follow-up cutting part support and follow-up heat dissipation, which can reduce deformation caused by laser cutting.

[0056] In Example 8, the blowing pipe of the blowing assembly 25 is installed on the side wall of the vertical top tightening plate 242, and the blowing port is aligned with the laser avoidance gap between a pair of vertical top tightening plates 242.

[0057] The blowing component 25 can be a combination of a fan and an air duct, which can directly blow air to the laser avoidance gap and promptly remove the heat from the cutting area of ​​the plate 100 to be cut.

[0058] Embodiment 9, the multimodal positioning controller includes a memory 31, an instruction chip 32 and a control chip 33. The memory 31 is connected in communication with the control computer 83 to collect cutting action execution data. The instruction chip 32 generates control instructions for the plate edge positioning component, the plane moving unit 21 and the telescopic mechanism 22 according to the cutting action execution data and stores them in the memory 31. The control chip 33 is connected in communication with the memory 31 to call the control instructions to control the execution actions of the plate edge positioning component, the plane moving unit 21, the telescopic mechanism 22 and the blowing component 25, so that the laser avoidance gap between a pair of vertical tightening plates 242 during the laser cutting process is always located below the cutting area of ​​the plate 100 to be cut.

[0059] The control chip 33 can automatically control the execution actions of the plate edge positioning component, the plane moving unit 21, the telescopic mechanism 22 and the blowing component 25 according to the control instructions, thereby realizing automatic positioning and clamping, realizing automatic control of follow-up support cooling, and reducing plate deformation caused by laser cutting.

[0060] Embodiment 10, a welding control method of a plate laser cutting machine based on multi-modal positioning, using a plate laser cutting machine based on multi-modal positioning to perform laser cutting on a plate 100 to be cut, comprising the following steps:

[0061] Step 1, inputting the original size data of the plate 100 to be cut and the laser cutting parameters through the control computer 83, the control computer 83 generates the cutting action execution data, and the multi-modal positioning controller and the control computer 83 exchange the cutting action execution data;

[0062] Step 2: The multi-modal positioning controller controls the linear moving mechanism 11 of the four plate edge positioning assemblies to move, so that the top plate support blocks 14 of the four plate edge positioning assemblies are located at the four corner positions of the plate 100 to be cut, controls the clamping mechanism 13 to open, places the plate 100 to be cut on the upper surface of the top plate support blocks 14 of the four plate edge positioning assemblies, and then controls the clamping mechanism 13 to clamp;

[0063] Step 3, the multi-modal positioning controller controls the plane moving part of the plane moving unit 21 to move, so that the laser avoidance gap between the pair of vertical pressing plates 242 is located below the initial cutting point of the plate 100 to be cut, controls the electric rotating mechanism 23 to make one side of the laser avoidance gap below the initial cutting point and the other side consistent with the direction of the cutting trajectory line, controls the telescopic part of the telescopic mechanism 22 to extend, the top surface of the pair of vertical pressing plates 242 presses against the bottom surface of the plate 100 to be cut, and controls the blowing assembly 25 to start blowing;

[0064] Step 4, the control computer 83 controls the laser cutting head of the laser cutting machine 82 to start cutting. When the cutting trajectory line is about to exceed the laser avoidance seam, the multi-modal positioning controller controls the telescopic part of the telescopic mechanism 22 to retract, and repeats steps 3 and 4 multiple times until the entire laser cutting process is completed.

[0065] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sheet metal laser cutting machine based on multi-modal positioning, characterized in that: It comprises a laser cutting unit (8), four plate edge positioning components, a cutting follow-up support cooling component and a chip-based multi-mode positioning controller, wherein the four plate edge positioning components surround the laser cutting unit (8) and are used to support the four edges of a plate (100) to be cut and to press and position it, and the plate edge positioning components comprise a linear motion mechanism (11), a support column (12), a pressing mechanism (13) and a plate support block (14), wherein the bottom of the support column (12) is mounted on the top surface of the linear motion part of the linear motion mechanism (11) and moves following the linear motion part, and the housing of the pressing mechanism (13) is mounted on the side wall of the support column (12), and when the pressing part of the pressing mechanism (13) is pressed downward, the edge of the plate (100) to be cut is pressed against the top surface of the support column (12); The cutting follow-up support cooling assembly comprises a plane moving unit (21), a telescopic mechanism (22), an electric rotating mechanism (23), a clamping block assembly (24), and an air blowing assembly (25); the plane moving unit (21) is installed at the middle position of the four plate edge positioning assemblies; the bottom of the telescopic mechanism (22) is installed on the top of the plane moving part of the plane moving unit (21) and moves in the plane following the plane moving part; the base of the electric rotating mechanism (23) is installed on the telescopic part of the telescopic mechanism (22); the clamping block assembly (24) is detachably installed on the electric rotating mechanism On the rotating part of the rotating mechanism (23), when the telescopic part extends upward, the clamping block assembly (24) presses against the plate (100) to be cut and is in the cutting area, the blowing assembly (25) is installed on the side of the clamping block assembly (24), and the blowing head is aimed at the bottom surface of the plate (100) to be cut, and the multi-modal positioning controller is connected to the laser cutting unit (8) for communication, collects cutting action execution data, and controls the execution actions of the plate edge positioning assembly, the plane moving unit (21), the telescopic mechanism (22), the electric rotating mechanism (23) and the blowing assembly (25) respectively according to the cutting action execution data; The laser cutting unit (8) comprises a gantry support frame (81), a laser cutting machine (82) and a control computer (83); the laser cutting machine (82) is mounted on the gantry support frame (81) and is located between four plate edge positioning components; the control computer (83) controls a laser cutting head of the laser cutting machine (82) to perform laser cutting on a fixed plate (100) to be cut according to a cutting trajectory; the control computer (83) is in communication connection with a multi-modal positioning controller; The clamping block assembly (24) comprises a base plate (241) and a pair of vertical clamping plates (242), wherein the base plate (241) is detachably mounted on the telescopic portion of the telescopic mechanism (22), the bottoms of the pair of vertical clamping plates (242) are respectively mounted on the top surface of the base plate (241), the pair of vertical clamping plates (242) are arranged in parallel, and a laser avoidance gap is formed between the pair of vertical clamping plates (242), and the laser avoidance gap is located below the cutting area of ​​the plate (100) to be cut; The multi-modal positioning controller comprises a memory (31), an instruction chip (32) and a control chip (33); the memory (31) is connected in communication with a control computer (83) to collect cutting action execution data; the instruction chip (32) generates control instructions for a plate edge positioning component, a plane moving unit (21) and a telescopic mechanism (22) according to the cutting action execution data and stores the control instructions in the memory (31); the control chip (33) is connected in communication with the memory (31) to call the control instructions to control the execution actions of the plate edge positioning component, the plane moving unit (21), the telescopic mechanism (22) and the blowing component (25) respectively, so that during the laser cutting process, the laser avoidance gap between a pair of vertical clamping plates (242) is always located below the cutting area of ​​the plate to be cut (100); The plate laser cutting machine based on multi-modal positioning uses a plate laser cutting machine method based on multi-modal positioning to laser cut the plate (100) to be cut, and the laser cutting comprises the following steps: Step 1, inputting the original size data of the plate (100) to be cut and the laser cutting parameters through the control computer (83), the control computer (83) generates cutting action execution data, and the multi-modal positioning controller and the control computer (83) exchange the cutting action execution data; Step 2, the multi-modal positioning controller controls the linear moving mechanisms (11) of the four plate edge positioning assemblies to move, so that the top plate support blocks (14) of the four plate edge positioning assemblies are located at the four corner positions of the plate to be cut (100), controls the clamping mechanism (13) to open, places the plate to be cut (100) on the upper surface of the top plate support blocks (14) of the four plate edge positioning assemblies, and then controls the clamping mechanism (13) to clamp; Step 3, the multi-modal positioning controller controls the plane moving part of the plane moving unit (21) to move so that the laser avoidance gap between the pair of vertical clamping plates (242) is located below the initial cutting point of the plate to be cut (100), controls the electric rotating mechanism (23) so that one side of the laser avoidance gap is located below the initial cutting point and the other side is aligned with the direction of the cutting trajectory line, controls the telescopic part of the telescopic mechanism (22) to extend so that the top surface of the pair of vertical clamping plates (242) presses against the bottom surface of the plate to be cut (100), and controls the blowing component (25) to start blowing; Step 4, the control computer (83) controls the laser cutting head of the laser cutting machine (82) to start cutting. When the cutting trajectory line is about to exceed the laser avoidance gap, the multi-modal positioning controller controls the telescopic part of the telescopic mechanism (22) to retract, and steps 3 and 4 are repeated multiple times until the entire laser cutting process is completed.

2. The plate laser cutting machine based on multi-modal positioning according to claim 1, characterized in that: The linear moving mechanism (11) is an electric linear slide, and the clamping mechanism (13) is an electric cylinder clamping mechanism.

3. The plate laser cutting machine based on multi-modal positioning according to claim 2, characterized in that: The bottom of the plate support block (14) is detachably mounted on the top surface of the support column (12); the top surface of the plate support block (14) is provided with anti-slip grooves; and the top surface heights of the plate support blocks (14) of the four plate edge positioning assemblies are consistent after installation.

4. The plate laser cutting machine based on multi-modal positioning according to claim 3, characterized in that: The plane moving unit (21) is a servo electric cross slide, the slider of the servo electric cross slide is the plane moving part, the telescopic mechanism (22) is a servo electric cylinder, the telescopic rod is the telescopic part, the electric rotating mechanism (23) is an electric rotating platform, and the turntable is the rotating part.

5. The plate laser cutting machine based on multi-modal positioning according to claim 4, characterized in that: The length of the vertical tightening plate (242) is greater than 200 mm, the height is greater than 200 mm, and the width of the laser avoidance gap between a pair of vertical tightening plates (242) is greater than 100 mm.

6. The plate laser cutting machine based on multi-modal positioning according to claim 5, characterized in that: The blowing pipe of the blowing assembly (25) is mounted on the side wall of the vertical tightening plate (242), and the blowing port is aligned with the laser avoidance gap between the pair of vertical tightening plates (242).

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