Laser cutting equipment with flexible dynamic balance mechanism

Abstract

The invention relates to laser cutting equipment with a flexible dynamic balance mechanism, and relates to the technical field of laser cutting equipment.The laser cutting equipment comprises a workbench, a mounting frame movably arranged on the workbench and a moving assembly driving the mounting frame to move in the X direction, the Y direction and the Z direction, and a laser cutting head is arranged on the mounting frame and faces the workbench; the workbench is provided with a supporting assembly used for supporting and fixing the wedge-shaped steel plate, a detection assembly used for measuring and calculating the thickness of the wedge-shaped steel plate and a balance assembly used for conducting vibration reduction on the laser cutting head. The laser cutting device has the effects that the cutting quality of the wedge-shaped steel plate is improved, and damage generated during collision of the laser cutting head is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of laser cutting equipment, and in particular to a laser cutting equipment with a flexible dynamic balance mechanism. Background Art

[0002] A laser cutting equipment emits laser from a laser, and through an optical path system, focuses it into a laser beam with a high power density. The laser beam irradiates the surface of a workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, a high-pressure gas coaxial with the beam blows away the melted or vaporized metal, achieving precise and rapid cutting.

[0003] Common laser cutting equipment includes an operation platform, a vision mechanism, a laser cutting head, a driving assembly for driving the laser cutting head to move in three axes, and a capacitance sensor fixed on the laser cutting head. When cutting an irregular metal sheet, such as a wedge-shaped steel plate used to adjust the levelness of the bridge bottom, technicians first place the wedge-shaped steel plate on the operation platform, collect the contour data of the wedge-shaped steel plate through the vision mechanism, then achieve precise recognition and positioning of the wedge-shaped steel plate through an image processing algorithm, plan the laser cutting path, and adjust the cutting parameters according to the path change to maintain the consistency of cutting at different thicknesses of the wedge-shaped steel plate. During cutting, the capacitance sensor detects the distance between the laser cutting head and the surface of the wedge-shaped steel plate, keeps the distance between the laser cutting head and the surface of the wedge-shaped steel plate consistent, and corrects the contour data of the wedge-shaped steel plate. At the same time, a Chinese patent document with the publication number CN110666365B discloses a sheet laser cutting equipment including a cross beam, an operation platform, a laser, a longitudinal beam, and a sheet fixing structure. The sheet fixing structure includes a bottom rod, a limiting block, a supporting structure, and a connecting rod. The limiting block is movably connected to the outside of the bottom rod, the supporting structure is vertically installed at the upper end of the bottom rod and is welded, the bottom rods are connected by a connecting rod, the sheet can be placed above the supporting structure, and its lateral movement is restricted by the limiting block to horizontally fix the sheet on the supporting structure, and then the laser cuts the sheet.

[0004] Regarding the above related technologies, during cutting, the wedge-shaped steel plate is horizontally arranged on the operation platform, and the laser beam is not perpendicular to the surface of the wedge-shaped steel plate, which easily causes uneven energy distribution of the laser beam, resulting in problems such as rough cutting surface, slag residue, and burrs. Due to environmental light and reflection on the surface of the wedge-shaped steel plate, it is easy to affect the accuracy of the vision mechanism's collection of the contour data of the wedge-shaped steel plate, so that the cutting path parameters do not match the actual contour of the wedge-shaped steel plate. When the capacitance sensor fails after long-term use, it is easy to cause a collision between the laser cutting head and the wedge-shaped steel plate. Since the surface of the wedge-shaped steel plate is inclined, it is easy to cause further damage to the laser cutting head. Summary of the Invention

[0005] In order to improve the cutting quality of the wedge-shaped steel plate and reduce the damage caused by the collision of the laser cutting head, the present application provides a laser cutting device with a flexible dynamic balance mechanism.

[0006] The laser cutting device with a flexible dynamic balance mechanism provided by the present application adopts the following technical solutions: A laser cutting device with a flexible dynamic balance mechanism includes a workbench, a mounting frame movably arranged on the workbench, and a moving component for driving the mounting frame to move in the X, Y, and Z directions. A laser cutting head is provided on the mounting frame, and the laser cutting head is arranged facing the workbench. A support component for supporting and fixing the wedge-shaped steel plate, a detection component for measuring the thickness of the wedge-shaped steel plate, and a balance component for damping the laser cutting head are arranged on the workbench; The support component includes a grid plate arranged on the workbench in a lifting manner. The grid plate includes a plurality of support plates and a contact plate. The plurality of support plates and a contact plate are arranged at intervals along the length direction of the workbench. The contact plate is located on the horizontal side of the plurality of support plates. The contact plate and the adjacent support plate are arranged in a stepped manner. When the wedge-shaped steel plate is placed on the grid plate, the inclined side of the wedge-shaped steel plate is attached to the top wall of the support plate, and the large-end of the wedge-shaped steel plate is movably attached to the side wall of the contact plate. A driving member for driving the grid plate to lift step by step is arranged on the workbench; The detection component includes two photoelectric sensors arranged on the mounting frame. The two photoelectric sensors are arranged at intervals and are consistent with the arrangement direction of the grid plate. A control module is arranged on the workbench. The photoelectric sensors, the driving member, and the moving component are all electrically connected to the control module.

[0007] By adopting the above technical solutions, when the wedge-shaped steel plate needs to be cut, the technician places the wedge-shaped steel plate on the grid plate. At this time, the plurality of support plates are consistent with the side walls of the wedge-shaped steel plate close to each other, so that the inclined side of the wedge-shaped steel plate is attached to the top wall of the support plate, and the large-end of the wedge-shaped steel plate is attached to the side wall of the contact plate. At this time, it is the initial position of the grid plate.

[0008] Then the technician starts the device, and the control module drives the moving component to work, driving the mounting frame to move above the wedge-shaped steel plate until the two photoelectric sensors correspond to the wedge-shaped steel plate at the same time, and measures the distance from the laser cutting head to the side wall of the wedge-shaped steel plate far from the grid plate. At this time, the side wall of the wedge-shaped steel plate far from the grid plate is in an inclined state, and the measured values of the two photoelectric sensors are inconsistent.

[0009] Then, the control module controls the driving member to work, driving the grille plate to rise synchronously in steps, causing the wedge-shaped steel plate to rotate relative to the workbench until the measured values of the two photoelectric sensors are the same. At this time, the side wall of the wedge-shaped steel plate away from the grille plate is in a horizontal state, and the large head end of the wedge-shaped steel plate always abuts against the side wall of the abutting plate, realizing the support of the wedge-shaped steel plate. At the same time, the photoelectric sensor transmits an electrical signal to the control module, and then the control module controls the driving member to stop working.

[0010] Then, the control module calculates the inclination angle of the support plate through the stroke of the driving member, and thus obtains the inclination angle of the inclined side of the wedge-shaped steel plate. At the same time, through the measured value of the photoelectric sensor and the distance from the laser cutting head to the workbench, it calculates the distance from the side wall of the wedge-shaped steel plate away from the grille plate to the workbench, and thus obtains the thickness of each position of the wedge-shaped steel plate. Then, the control module plans the cutting path and adjusts the cutting parameters when cutting at different thickness positions of the wedge-shaped steel plate.

[0011] Through the above solution, the adjustment of wedge-shaped steel plates with different sizes and specifications is realized, and then the thickness of the wedge-shaped steel plate is measured and calculated, and the cutting path and cutting parameters are planned.

[0012] Then, the control module drives the moving component to work, driving the installation frame to move, so that the laser cutting head moves along the planned path and cuts the wedge-shaped steel plate. At this time, the side wall of the wedge-shaped steel plate away from the grille plate is in a horizontal state. When an accidental collision occurs between the laser cutting head and the wedge-shaped steel plate, it can effectively reduce the damage of the wedge-shaped steel plate to the laser cutting head, and make the laser cutting head perpendicular to the surface of the wedge-shaped steel plate, so that the energy distribution on the surface of the laser beam and the wedge-shaped steel plate is uniform, improving the cutting quality. At the same time, the balancing component reduces the influence of the vibration generated during the operation of the equipment on the laser cutting head, further improving the cutting quality.

[0013] Optionally, a fixed frame is provided on the workbench. The driving member includes guide columns provided on opposite side walls of the grille plate. A driving plate is rotatably provided on the fixed frame. The rotation axis of the driving plate is located on the side of the abutting plate away from the support plate. A guide groove is formed on the driving plate. The guide columns are movably located in the guide groove and are slidably adapted to the guide groove. A limiting structure for preventing the grille plate from rotating relative to the fixed frame and a power member for driving the driving plate to rotate are provided on the fixed frame. The power member is electrically connected to the control module.

[0014] By adopting the above technical solution, when driving the grating plate to rise, the control module drives the power component to work, drives the driving plate to rotate, makes the guiding column slide in the guiding groove. At the same time, due to the set limiting structure, the grating plate is not prone to rotation, and the grating plate always maintains a vertical state, which is convenient for discharging the metal debris generated by laser cutting, and realizes the stepped synchronous rise of the grating plate in the direction from near the rotation axis of the driving plate to far from the rotation axis of the driving plate, improves the coordination of the synchronous rise of the grating plate, and enhances the stability of the support for the wedge-shaped steel plate until the side wall of the wedge-shaped steel plate far from the grating plate is in a horizontal state, which is convenient for subsequent cutting; When driving the grating plate to descend, the power component drives the driving plate to rotate in the reverse direction, drives the grating plate to descend, and makes the grating plate move to the initial position, which is convenient for the next cutting.

[0015] Optionally, the driving member further includes a connecting rod rotatably arranged on the guiding column. One end of the connecting rod far from the guiding column extends obliquely downward to abut against one side of the abutting plate close to the supporting plate and is rotatably connected to the outer side wall of the fixed frame. An air-cooling component for cooling the wedge-shaped steel plate is arranged on the workbench.

[0016] By adopting the above technical solution, when the driving plate rotates, due to the set connecting rod, the guiding column slides in the guiding groove and rotates around the rotation axis of the connecting rod far from the guiding column. At this time, the angle of the connecting rod extending obliquely downward decreases sequentially from near the rotation axis of the driving plate to far from the rotation axis of the driving plate, so that the distance between adjacent two grating plates increases sequentially from near the rotation axis of the driving plate to far from the rotation axis of the driving plate, and the density of the grating plates corresponding to the wedge-shaped steel plate from thin to thick increases sequentially. At this time, the grating plate can be used as a heat dissipation fin, and the heat conduction performance of the grating plates corresponding to the wedge-shaped steel plate from thin to thick increases sequentially.

[0017] After cutting is completed, the air-cooling component cools the wedge-shaped steel plate. Since the temperature of the wedge-shaped steel plate after cutting increases sequentially from thin to thick, the grating plates with different densities at this time can reduce the temperature difference inside the wedge-shaped steel plate, thereby reducing the risk of stress deformation and cracking of the wedge-shaped steel plate due to the temperature difference.

[0018] Optionally, the air-cooling component includes an air suction hood arranged in the workbench. The air suction hood is located at the bottom of the fixed frame. The side walls of the air suction hood and the fixed frame close to each other are in contact. An air suction pipe is arranged on the air suction hood. One end of the air suction pipe far from the air suction hood is connected with an air suction pump. A collection box is arranged between the air suction hood and the air suction pipe, and a filter screen is arranged in the collection box.

[0019] By adopting the above technical solution, when cooling the wedge-shaped steel plate, the suction pump sucks air, thereby realizing the suction of the air suction hood, realizing the flow of gas at the wedge-shaped steel plate, realizing the cooling of the wedge-shaped steel plate. At the same time, since the arranged grid plate acts as a heat dissipation fin, the cooling efficiency is improved. At the same time, the air suction hood adsorbs the metal chips generated by cutting and filters them through the filter screen, so that the metal chips fall into the collection box, realizing the collection and cleaning of the metal chips and improving the cleanliness of the working environment.

[0020] Optionally, the balance assembly includes a balance block movably arranged in the installation frame. A steel wire rope is arranged on the inner top wall of the installation frame. The balance block is connected to the steel wire rope. The laser cutting head is arranged on the balance block. A counterweight block is arranged on the balance block. The laser cutting head and the counterweight block are arranged oppositely and respectively correspond to the two open ends of the installation frame. A plurality of dampers for keeping the balance block balanced are arranged on the installation frame. The damper includes a cylinder body rotatably arranged on the inner side wall of the installation frame. A piston rod is coaxially and slidably arranged in the cylinder body. One end of the piston rod protrudes from the cylinder body. The protruding end of the piston rod is rotatably connected to the balance block. A piston block is arranged on the piston rod. The piston block is slidably matched with the inner peripheral wall of the cylinder body. A high-viscosity damping medium is injected into the cylinder body. A plurality of flow resistance holes for the damping medium to pass through are formed in the piston block.

[0021] By adopting the above technical solution, through the arranged counterweight block, the common center of gravity of the laser cutting head and the balance block is balanced, so that the balance block is in a balanced state when suspended in the installation frame by the steel wire rope.

[0022] When the equipment runs and generates vibration, it is easy to cause the installation frame to vibrate and drive the cylinder body to move. At this time, the piston rod slides relative to the cylinder body, causing the piston block to slide in the cylinder body, generating a pressure difference on both sides of the piston block, causing the damping medium to pass through the damping hole, thereby generating damping and absorbing the energy generated by the vibration of the equipment, so that the balance block maintains a constant relative position, realizing the vibration reduction of the laser cutting head and improving the cutting quality.

[0023] Optionally, a plurality of first adjustment holes and a plurality of second adjustment holes are formed in the piston block. The number of the plurality of first adjustment holes and the plurality of second adjustment holes is the same, and they are arranged at equal intervals in a staggered manner along the circumferential direction of the piston block. First one-way valves and second one-way valves are respectively arranged in the first adjustment holes and the second adjustment holes, and the opening and closing directions of the first one-way valve and the second one-way valve are opposite, and both the first one-way valve and the second one-way valve open when the set pressure is exceeded.

[0024] By adopting the above technical solution, when the laser cutting head has an accidental collision, the laser cutting head drives the balance block to move, thereby causing the piston rod to move, making the piston block slide in the cylinder body. Due to the collision, the piston rod generates a large displacement. At this time, the pressure difference on both sides of the piston block is large and reaches the opening pressure set by the first one-way valve / the second one-way valve. At this time, the first one-way valve / the second one-way valve opens, increasing the passage for the damping medium to pass through, thereby reducing the generated damping, making it not easy to hinder the movement of the balance block, and causing the laser cutting head to deflect quickly during the collision, thus reducing the damage generated by the laser cutting head during the collision.

[0025] Optionally, a travel switch is provided at the protruding end of the piston rod. The travel switch is movably attached to the side wall of the cylinder body that is close to each other, and the travel switch is electrically connected to the control module.

[0026] By adopting the above technical solution, during cutting, the piston rod slides in the cylinder body along with the vibration of the installation frame. When any one of the travel switches moves with the piston rod to be attached to the side wall of the cylinder body that is close to each other, the sliding distance of the piston rod exceeds the displacement generated by normal vibration, indicating that the equipment is operating abnormally or the laser cutting head has a too large displacement due to collision. At this time, the travel switch transmits an electrical signal to the control module, and the control module drives the moving component to stop working, avoiding further damage to the laser cutting head.

[0027] Optionally, an installation block is fixed on the balance block. A plug-in block is provided on the side wall of the laser cutting head close to the installation block. A plug-in slot for the plug-in block to be movably inserted is formed on the installation block. The plug-in block is movably attached to the inner peripheral wall of the plug-in slot. The cross section of the plug-in block is a circular shape with a notch. A tightening cover is threadedly connected to the installation block. The tightening cover is coaxially arranged with the plug-in block, and the side walls of the tightening cover and the plug-in block that are close to each other are movably tightened.

[0028] By adopting the above technical solution, when disassembling the laser cutting head, the technician unscrews the tightening cover to separate the tightening cover from the installation block, and then the technician pulls out the laser cutting head to separate the plug-in block from the plug-in slot, and the laser cutting head can be removed, which is convenient for the technician to disassemble.

[0029] When installing the laser cutting head, the technician aligns the plug-in block and inserts it into the plug-in slot. Since the cross section of the plug-in block is a circular shape with a notch, it is convenient for the technician to quickly align the insertion direction. Then the technician tightens the tightening cover so that the side walls of the tightening cover and the plug-in block that are close to each other are tightened, thereby realizing the fixation of the laser cutting head, which is convenient for the technician to install.

[0030] Due to the conventional fixing method with four bolts, it is necessary to apply tightening torques to the four bolts respectively. At this time, it is not easy to ensure that the applied tightening torques are consistent. When fixing by tightening the pressing cover, the pressing cover is in uniform contact with the plugging block to reduce stress concentration, improve the installation accuracy of the laser cutting head, and thus improve the cutting accuracy.

[0031] Optionally, the counterweight block is fixedly connected to the balance block by threads.

[0032] By adopting the above technical solution, the technician rotates the counterweight block to move the counterweight block in the direction close to / away from the balance block, so as to adjust the center of gravity of the balance block and the laser cutting head.

[0033] In summary, the present application includes at least one of the following beneficial technical effects: 1. The driving member drives the driving plate to rotate, so that the guide post slides in the guide groove. At the same time, through the arranged limiting structure, the grating plate always maintains a vertical state, which is convenient for discharging the metal debris generated by laser cutting, and realizes the stepped synchronous rising of the grating plate, improves the coordination of the synchronous rising of the grating plate, until the side wall of the wedge-shaped steel plate away from the grating plate is in a horizontal state, improves the stability of the support for the wedge-shaped steel plate. At the same time, when the laser cutting head collides with the wedge-shaped steel plate accidentally, the damage of the wedge-shaped steel plate to the laser cutting head can be effectively reduced, and the laser cutting head is perpendicular to the surface of the wedge-shaped steel plate, so that the energy distribution on the surface of the laser beam and the wedge-shaped steel plate is uniform, and the cutting quality is improved; When the two photoelectric sensors detect that the measured values of the laser cutting head to the surface of the wedge-shaped steel plate are the same, it means that the side wall of the wedge-shaped steel plate away from the grating plate moves to the horizontal. At this time, the two photoelectric sensors transmit electrical signals to the control module, and the control module controls the driving member to stop working. Then, the control module can calculate the thickness of each position of the wedge-shaped steel plate through the working stroke of the driving member, the measured value of the photoelectric sensor, and the distance from the laser cutting head to the workbench, which is convenient for the control module to plan the cutting path and adjust the cutting parameters when cutting different thickness positions of the wedge-shaped steel plate; 2. When the driving member drives the driving plate to rotate, the guide post slides in the guide groove and rotates around the rotation axis of the connecting rod away from the guide post. At this time, the angle of the connecting rod extending obliquely downward decreases sequentially from the direction close to the rotation axis of the driving plate to the direction away from the rotation axis of the driving plate, so that the distance between adjacent two grating plates increases sequentially from the direction close to the rotation axis of the driving plate to the direction away from the rotation axis of the driving plate, and the density of the grating plates corresponding to the wedge-shaped steel plate from thin to thick increases sequentially. At this time, the grating plate can be used as a heat dissipation fin, and the heat conduction performance of the grating plates corresponding to the wedge-shaped steel plate from thin to thick increases sequentially. Since the temperature of the wedge-shaped steel plate increases sequentially from thin to thick, the grating plates with different densities can reduce the temperature difference inside the wedge-shaped steel plate, thereby reducing the risk of stress deformation and cracking of the wedge-shaped steel plate due to the temperature difference; 3. When the equipment operates and generates vibrations, it is easy to cause the installation frame to vibrate, which drives the cylinder block to move. At this time, the piston rod slides relative to the cylinder block, causing the piston block to slide within the cylinder block, creating a pressure difference on both sides of the piston block. As a result, the damping medium passes through the damping holes, generating damping and absorbing the energy generated by the equipment vibrations, thereby keeping the relative position of the balance block constant and achieving vibration reduction for the laser cutting head, improving the cutting quality. When an accidental collision occurs to the laser cutting head, due to the violent movement caused by the collision, the pressure difference on both sides of the piston block is relatively large and reaches the opening pressure set by the first check valve / second check valve. At this time, the first check valve / second check valve opens, increasing the passage for the damping medium, thereby reducing the generated damping and making it less likely to impede the movement of the balance block, enabling the laser cutting head to deflect quickly during the collision, thus reducing the damage caused to the laser cutting head during the collision. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the state schematic diagram of the support plate and the abutting plate when the side wall of the wedge-shaped steel plate away from the grid plate is in a horizontal state; Figure 3 is the state schematic diagram of the support plate and the abutting plate when the side wall of the wedge-shaped steel plate away from the grid plate is in an inclined state; Figure 4 is the connection schematic diagram of the balance block, the laser cutting head, and the counterweight block; Figure 5 is the connection structure schematic diagram of the first check valve, the second check valve, and the piston block.

[0035] Reference Numerals: 1, workbench; 11, installation frame; 12, moving component; 13, fixed frame; 2, laser cutting head; 3, support component; 31, grid plate; 311, support plate; 312, abutting plate; 32, driving component; 321, guiding column; 322, driving plate; 323, guiding groove; 324, power component; 325, connecting rod; 33, limiting structure; 331, limiting block; 332, limiting plate; 333, limiting groove; 4, detection component; 41, photoelectric sensor; 42, control module; 5, balance component; 51, balance block; 52, installation block; 53, counterweight block; 531, threaded rod; 532, fastening nut; 54, damper; 541, cylinder block; 542, piston rod; 543, piston block; 544, flow blocking hole; 545, first adjustment hole; 546, second adjustment hole; 547, first check valve; 548, second check valve; 55, travel switch; 56, plug-in block; 57, plug-in slot; 58, pressing cover; 6, air-cooling component; 61, air suction hood; 62, air suction pipe; 63, collection box; 64, filter screen; 7, wedge-shaped steel plate. Detailed implementation mode

[0036] The following will further elaborate on this application in conjunction with the attached Figures 1-5 drawings.

[0037] An embodiment of this application discloses a laser cutting device with a flexible dynamic balance mechanism. Referring to Figure 1 , a laser cutting device with a flexible dynamic balance mechanism includes a workbench 1 horizontally placed on the ground. An installation frame 11 is movably arranged on the workbench 1, and a laser cutting head 2 is arranged on the installation frame 11. The laser cutting head 2 is vertically arranged facing the workbench 1. A moving component 12 for driving the installation frame 11 and the laser cutting head 2 to move in the X, Y, and Z directions is arranged on the workbench 1.

[0038] To support and fix the wedge-shaped steel plate 7, a support component 3 is arranged on the workbench 1. Referring to Figure 2 and Figure 3 , the support component 3 includes a fixed frame 13 fixed to the top of the workbench 1. A grid plate 31 is connected to the fixed frame 13 in a lifting manner. The grid plate 31 includes a plurality of support plates 311 and a contact plate 312. The plurality of support plates 311 and a contact plate 312 are arranged at intervals along the length direction of the workbench 1. The contact plate 312 is located on the horizontal side of the plurality of support plates 311. The contact plate 312 and the adjacent support plates 311 are arranged in a stepped manner, and the contact plate 312 is arranged higher than the support plates 311. The side wall of the grid plate 31 close to the laser cutting head 2 is wavy. When the wedge-shaped steel plate 7 is placed on the grid plate 31, the inclined side of the wedge-shaped steel plate 7 is attached to the top wall of the support plate 311, and the large-end of the wedge-shaped steel plate 7 is movably attached to the side wall of the contact plate 312. In this application, there are eight support plates 311. In other embodiments, the number of support plates 311 can also be set to seven, ten, thirteen, etc. As long as the arrangement method is the same as that of this application. A driving member 32 for driving the grid plate 31 to lift step by step is arranged on the workbench 1.

[0039] Referring to Figure 2 and Figure 3 , the driving member 32 includes guide columns 321 fixed to the opposite side walls of the grid plate 31. The grid plate 31 is located within the fixed frame 13, and the guide columns 321 protrude from the outer side wall of the fixed frame 13. A driving plate 322 is rotatably connected to the outer side wall of the fixed frame 13. There are two driving plates 322, and the two driving plates 322 are arranged oppositely. The rotation axis of the driving plate 322 is consistent with the width direction of the workbench 1, and the rotation axis of the driving plate 322 is located on the side of the contact plate 312 away from the support plate 311. A guide groove 323 is formed on the driving plate 322. The guide column 321 is movably located within the guide groove 323 and is slidably adapted to the guide groove 323; One end of the guide post 321 protruding from the fixed frame 13 is rotatably connected to a connecting rod 325. One end of the connecting rod 325 away from the guide post 321 extends obliquely downward to abut against one side of the abutting plate 312 close to the support plate 311 and is rotatably connected to the outer side wall of the fixed frame 13. A power member 324 for driving the driving plate 322 to rotate is arranged on the fixed frame 13. In this application, the power member 324 is set as an electric push rod. The fixed end of the electric push rod is rotatably connected to the fixed frame 13, and the output end of the electric push rod is rotatably connected to one end of each of the two driving plates 322 away from the rotation axis, and the rotation axis of the output end of the electric push rod is parallel to the rotation axis of the driving plate 322.

[0040] In order to keep the grid plate 31 lifted and lowered vertically, a limiting structure 33 is arranged on the fixed frame 13. Refer to Figure 2 and Figure 3 The limiting structure 33 includes a limiting block 331 fixed to one end of the guide post 321 close to the grid plate 31. A limiting plate 332 is slidably connected to the side wall of the fixed frame 13. The sliding direction of the limiting plate 332 is consistent with the length direction of the workbench 1. A limiting groove 333 for the limiting block 331 to slide is formed on the limiting plate 332. The limiting block 331 is slidably adapted to the inner side wall of the limiting groove 333. The sliding direction of the limiting block 331 is consistent with the height direction of the workbench 1. The cross section of the limiting block 331 is polygonal. In this application, the cross section of the limiting block 331 is square. In other embodiments, the cross section of the limiting block 331 can also be pentagonal, octagonal, dodecagonal or other polygonal shapes, as long as the limiting block 331 does not rotate while sliding in the limiting groove 333.

[0041] When the wedge-shaped steel plate 7 needs to be cut, the technician places the wedge-shaped steel plate 7 on the grid plate 31. At this time, the side walls of the support plate 311 and the wedge-shaped steel plate 7 close to each other are consistent, so that the inclined side of the wedge-shaped steel plate 7 is attached to the top wall of the support plate 311, and the large-end of the wedge-shaped steel plate 7 is attached to the side wall of the abutting plate 312. At this time, it is the initial position of the grid plate 31.

[0042] Then the power member 324 drives the driving plate 322 to rotate, so that the guide post 321 slides in the guide groove 323, and the guide post 321 moves along with the driving plate 322, realizing that the grid plate 31 sequentially rises step by step synchronously from the direction close to the rotation axis of the driving plate 322 to the direction away from the rotation axis of the driving plate 322, improving the coordination of the synchronous rise of the grid plate 31 until the side wall of the wedge-shaped steel plate 7 away from the grid plate 31 is in a horizontal state, and the large-end of the wedge-shaped steel plate 7 is always tightly abutted against the side wall of the abutting plate 312, realizing the support for the wedge-shaped steel plate 7.

[0043] Then, the moving component 12 drives the installation frame 11 to move, and drives the laser cutting head 2 to cut the wedge-shaped steel plate 7. At this time, the laser cutting head 2 is perpendicular to the surface of the wedge-shaped steel plate 7, so that the energy distribution on the surface of the laser beam and the wedge-shaped steel plate 7 is uniform, improving the cutting quality. When an accidental collision occurs between the laser cutting head 2 and the wedge-shaped steel plate 7, the damage to the laser cutting head 2 caused by the wedge-shaped steel plate 7 can be effectively reduced.

[0044] At the same time, the guide post 321 drives the limit block 331 to slide in the limit groove 333, and drives the limit plate 332 to slide along the length direction of the workbench 1 away from the abutting plate 312, so that the grille plate 31 always remains vertical, facilitating the discharge of metal debris generated by laser cutting.

[0045] At the same time, due to the arranged connecting rod 325, the guide post 321 slides in the guide groove 323 and rotates around the rotation axis of the connecting rod 325 away from the guide post 321. At this time, the angles of the connecting rod 325 extending obliquely downward decrease in turn from the direction close to the rotation axis of the driving plate 322 to the direction away from the rotation axis of the driving plate 322, so that the distance between adjacent two grille plates 31 increases in turn from the direction close to the rotation axis of the driving plate 322 to the direction away from the rotation axis of the driving plate 322, and the density of the grille plates 31 corresponding to the wedge-shaped steel plate 7 from thin to thick increases in turn. At this time, the grille plate 31 can be used as a heat dissipation fin, so that the heat conduction performance of the grille plates 31 corresponding to the wedge-shaped steel plate 7 from thin to thick increases in turn.

[0046] After cutting, since the temperature of the wedge-shaped steel plate 7 after cutting increases from thin to thick in turn, the grille plates 31 with different densities can reduce the temperature difference inside the wedge-shaped steel plate 7, thereby reducing the risk of stress deformation and cracking of the wedge-shaped steel plate 7 caused by the temperature difference.

[0047] Further, in order to measure the thickness of different positions of the wedge-shaped steel plate 7, a detection component 4 is arranged on the workbench 1. Refer to Figure 1 and Figure 3 , the detection component 4 includes two photoelectric sensors 41 fixed to the bottom of the installation frame 11. The two photoelectric sensors 41 are arranged at intervals and are consistent with the arrangement direction of the grille plate 31. Both of the two photoelectric sensors 41 are vertically arranged facing the workbench 1. A control module 42 is fixed on the workbench 1. The photoelectric sensors 41, the power component 324, and the moving component 12 are all electrically connected to the control module 42.

[0048] After placing the wedge-shaped steel plate 7 on the grid plate 31, the technician starts the equipment, and the control module 42 drives the moving assembly 12 to work, driving the mounting frame 11 to move above the wedge-shaped steel plate 7 until the two photoelectric sensors 41 correspond to the wedge-shaped steel plate 7 at the same time, and measure the distance from the laser cutting head 2 to the side wall of the wedge-shaped steel plate 7 away from the grid plate 31. At this time, the side wall of the wedge-shaped steel plate 7 away from the grid plate 31 is inclined, and the measured values of the two photoelectric sensors 41 are inconsistent.

[0049] Then the control module 42 drives the power member 324 to work, driving the grid plate 31 to rise step by step synchronously, so that the wedge-shaped steel plate 7 rotates relative to the workbench 1 until the measured values of the two photoelectric sensors 41 are consistent. At this time, the side wall of the wedge-shaped steel plate 7 away from the grid plate 31 is in a horizontal state. At the same time, the photoelectric sensor 41 transmits an electrical signal to the control module 42, and then the control module 42 controls the driving member 32 to stop working.

[0050] Then the control module 42 calculates the inclination angle of the support plate 311 through the stroke of the driving member 32, and thus obtains the inclination angle of the inclined side of the wedge-shaped steel plate 7. At the same time, through the measured value of the photoelectric sensor 41 and the distance from the laser cutting head 2 to the workbench 1, the distance from the side wall of the wedge-shaped steel plate 7 away from the grid plate 31 to the workbench 1 is calculated, and thus the thickness of each position of the wedge-shaped steel plate 7 can be obtained. Then the control module 42 plans the cutting path and adjusts the cutting parameters when cutting different thickness positions of the wedge-shaped steel plate 7.

[0051] Then the control module 42 drives the moving assembly 12 to work, driving the mounting frame 11 to move, so that the laser cutting head 2 moves along the planned path and cuts the wedge-shaped steel plate 7.

[0052] Furthermore, in order to cool the cut wedge-shaped steel plate 7, an air-cooling assembly 6 is provided on the workbench 1. Refer to Figure 3 , the air-cooling assembly 6 includes an air suction hood 61 provided in the workbench 1. The air suction hood 61 is located at the bottom of the fixed frame 13, and the side walls of the air suction hood 61 and the fixed frame 13 close to each other are attached. An air suction pipe 62 is provided on the air suction hood 61. One end of the air suction pipe 62 away from the air suction hood 61 is connected to an air suction pump. A collection box 63 is provided between the air suction hood 61 and the air suction pipe 62. The collection box 63 is movably placed in the workbench 1 and is located directly below the air suction hood 61. A filter screen 64 is fixed on the collection box 63 at the air suction pipe 62.

[0053] When cooling the wedge-shaped steel plate 7, the suction pump sucks air, thereby realizing the suction of the air suction hood 61, realizing the flow of gas at the wedge-shaped steel plate 7, realizing the cooling of the wedge-shaped steel plate 7. At the same time, since the provided grille plate 31 acts as a heat dissipation fin, the cooling efficiency is improved. At the same time, the air suction hood 61 adsorbs the metal chips generated by cutting and filters them through the filter screen 64, so that the metal chips fall into the collection box 63, realizing the collection and cleaning of the metal chips and improving the cleanliness of the working environment.

[0054] Furthermore, in order to damp the laser cutting head 2 and improve the cutting quality, a balancing component 5 is provided on the workbench 1. Refer to Figure 4 , the balancing component 5 includes a balancing block 51 movably arranged in the mounting frame 11. In this application, the balancing block 51 is set in the shape of a regular cube. A steel wire rope is fixed on the inner top wall of the mounting frame 11, and the balancing block 51 is connected to the steel wire rope. An installation block 52 is fixed on the balancing block 51, and the laser cutting head 2 is detachably fixed on the installation block 52. In order to facilitate the adjustment of the center of gravity of the balancing block 51 and the laser cutting head 2, a counterweight block 53 is provided on the balancing block 51. A threaded rod 531 is fixed on the counterweight block 53, and the threaded rod 531 is threadedly connected to the balancing block 51. A fastening nut 532 is threadedly connected coaxially on the threaded rod 531, and the fastening nut 532 is movably abutted against the side walls of the balancing block 51 close to each other. The laser cutting head 2 and the counterweight block 53 are arranged oppositely and respectively correspond to the two open ends of the mounting frame 11; A plurality of dampers 54 for keeping the balancing block 51 in balance are provided on the mounting frame 11. The damper 54 includes a cylinder body 541 rotatably connected to the inner side wall of the mounting frame 11 in all directions. A piston rod 542 is slidably connected coaxially in the cylinder body 541. One end of the piston rod 542 protrudes from the cylinder body 541, and the protruding end of the piston rod 542 is rotatably connected to the balancing block 51 in all directions. In this application, both between the cylinder body 541 and the inner side wall of the mounting frame 11 and between the protruding end of the piston rod 542 and the balancing block 51 are connected through spherical plain bearings. In other embodiments, connection methods such as ball hinges or universal floating joints can also be used.

[0055] A piston block 543 is fixed on the piston rod 542, and the piston block 543 is slidably adapted to the inner peripheral wall of the cylinder body 541. A high-viscosity damping medium is injected into the cylinder body 541. A plurality of flow resistance holes 544 for the damping medium to pass through are opened on the piston block 543. In this application, eight dampers 54 are provided and correspond to the eight vertices of the balancing block 51. In other embodiments, the number of dampers 54 can also be set to four, six, seven, etc. as long as the balancing block 51 can be kept in balance.

[0056] In order to adjust the damping of the damper 54 and reduce the resistance when the laser cutting head 2 collides, refer to Figure 5, a plurality of first adjustment holes 545 and a plurality of second adjustment holes 546 are formed in the piston block 543. The number of the plurality of first adjustment holes 545 is the same as that of the plurality of second adjustment holes 546, and they are arranged at equal intervals in a staggered manner along the circumferential direction of the piston block 543. In this application, both the first adjustment hole 545 and the second adjustment hole 546 are set to three. In other embodiments, the first adjustment hole 545 and the second adjustment hole 546 can also be set to two, four, five or other numbers, as long as the arrangement method is the same as that of this application. A first one-way valve 547 and a second one-way valve 548 are respectively fixed in the first adjustment hole 545 and the second adjustment hole 546, and the opening and closing directions of the first one-way valve 547 and the second one-way valve 548 are opposite, and both the first one-way valve 547 and the second one-way valve 548 open when the set pressure is exceeded.

[0057] In order to stop the machine in time when the laser cutting head 2 collides and avoid further damage to the laser cutting head 2, referring to Figure 5 , a travel switch 55 is fixed to the protruding end of the piston rod 542. The travel switch 55 is movably attached to the side wall of the cylinder block 541 that is close to each other, and the travel switch 55 is electrically connected to the control module 42.

[0058] After the laser cutting head 2 is installed, the technician rotates the counterweight block 53 and the threaded rod 531 to move the counterweight block 53 in the direction of approaching / away from the balance block 51, and makes the fastening nut 532 always fit against the side wall of the balance block 51 that is close to each other, so as to adjust the center of gravity of the balance block 51 and the laser cutting head 2. After the adjustment is completed, the technician tightens the fastening nut 532 to make the fastening nut 532 abut against the balance block 51, so that the counterweight block 53 is not easily loosened.

[0059] During cutting, due to the vibration generated by the operation of the equipment, it is easy to cause the installation frame 11 to vibrate and drive the cylinder block 541 to move. At this time, the piston rod 542 slides relative to the cylinder block 541, causing the piston block 543 to slide in the cylinder block 541, generating a pressure difference on both sides of the piston block 543, and causing the damping medium to pass through the damping holes, thereby generating damping and absorbing the energy generated by the vibration of the equipment, so that the balance block 51 maintains a constant relative position, realizing vibration reduction of the laser cutting head 2 and improving the cutting quality.

[0060] When any one of the travel switches 55 moves with the piston rod 542 to fit against the side wall of the cylinder block 541 that is close to each other, the sliding distance of the piston rod 542 exceeds the displacement generated by normal vibration, indicating that the equipment is operating abnormally or the laser cutting head 2 has a large displacement due to collision. At this time, the travel switch 55 transmits an electrical signal to the control module 42, and the control module 42 drives the moving component 12 to stop working, avoiding further damage to the laser cutting head 2, and at the same time stopping cutting when the equipment is operating abnormally, improving the yield rate.

[0061] When the laser cutting head 2 is displaced due to a collision, the pressure difference on both sides of the piston block 543 is relatively large at this time and reaches the opening pressure set by the first one-way valve 547 / the second one-way valve 548. At this time, the first one-way valve 547 / the second one-way valve 548 opens, increasing the passage for the damping medium, thereby reducing the generated damping, making it not easy to hinder the movement of the balance block 51, enabling the laser cutting head 2 to deflect quickly during a collision, and thus reducing the damage generated by the laser cutting head 2 during a collision.

[0062] Furthermore, for the convenience of disassembling the laser cutting head 2, referring to Figure 4 , a plug-in block 56 is fixed on the side wall of the laser cutting head 2 close to the mounting block 52. A plug-in slot 57 for the plug-in block 56 to be inserted into is provided on the mounting block 52. The inner peripheral wall of the plug-in block 56 is in movable contact with the inner peripheral wall of the plug-in slot 57. The cross-section of the plug-in block 56 is a circular shape with a notch. A tightening cover 58 is threadedly connected to the mounting block 52. The tightening cover 58 is arranged coaxially with the plug-in block 56, and the side walls of the tightening cover 58 and the plug-in block 56 close to each other are in movable contact.

[0063] When disassembling the laser cutting head 2, the technician unscrews the tightening cover 58 to separate the tightening cover 58 from the mounting block 52. Then, the technician pulls out the laser cutting head 2 to separate the plug-in block 56 from the plug-in slot 57, and the laser cutting head 2 can be removed, which is convenient for the technician to disassemble.

[0064] When installing the laser cutting head 2, the technician aligns the plug-in block 56 and inserts it into the plug-in slot 57. Since the cross-section of the plug-in block 56 is a circular shape with a notch, it is convenient for the technician to quickly align the insertion direction. Then, the technician tightens the tightening cover 58 so that the side walls of the tightening cover 58 and the plug-in block 56 close to each other are in contact, thereby realizing the fixation of the laser cutting head 2, which is convenient for the technician to install.

[0065] Due to the conventional fixing method with four bolts, it is necessary to apply tightening torques to the four bolts respectively. At this time, it is not easy to ensure that the applied tightening torques are consistent. When fixing by tightening the tightening cover 58, the tightening cover 58 is in uniform contact with the plug-in block 56 to reduce stress concentration and improve the installation accuracy of the laser cutting head 2, thereby improving the cutting accuracy.

[0066] The implementation principle of a laser cutting device with a flexible dynamic balance mechanism in an embodiment of the present application is as follows: When it is necessary to cut the wedge-shaped steel plate 7, the technician places the wedge-shaped steel plate 7 on the grid plate 31. At this time, the side walls of the support plate 311 and the wedge-shaped steel plate 7 close to each other are consistent, so that the inclined side of the wedge-shaped steel plate 7 is in contact with the top wall of the support plate 311, and the large head end of the wedge-shaped steel plate 7 is in contact with the side wall of the abutting plate 312. At this time, it is the initial position of the grid plate 31.

[0067] Then, the technician starts the device, and the control module 42 drives the moving component 12 to work, driving the installation frame 11 to move above the wedge-shaped steel plate 7 until the two photoelectric sensors 41 correspond to the wedge-shaped steel plate 7 at the same time. Then, the control module 42 drives the power component 324 to work, driving the driving plate 322 to rotate, causing the guiding column 321 to slide in the guiding groove 323, and making the guiding column 321 move with the driving plate 322, so that the grating plate 31 sequentially steps up synchronously in the direction from near the rotation axis of the driving plate 322 to far from the rotation axis of the driving plate 322.

[0068] At the same time, the guiding column 321 drives the limiting block 331 to slide in the limiting groove 333, and drives the limiting plate 332 to slide along the length direction of the workbench 1 in the direction away from the abutting plate 312, so that the grating plate 31 always maintains a vertical state.

[0069] At the same time, the guiding column 321 rotates around the rotation axis of the connecting rod 325 away from the guiding column 321. At this time, the angle of the connecting rod 325 extending obliquely downward decreases sequentially in the direction from near the rotation axis of the driving plate 322 to far from the rotation axis of the driving plate 322, so that the distance between adjacent two grating plates 31 increases sequentially in the direction from near the rotation axis of the driving plate 322 to far from the rotation axis of the driving plate 322, and the heat conduction performance of the wedge-shaped steel plate 7 corresponding to the grating plate 31 increases sequentially from thin to thick.

[0070] At this time, the wedge-shaped steel plate 7 rotates relative to the workbench 1 until the measured values of the two photoelectric sensors 41 are consistent. At this time, the side wall of the wedge-shaped steel plate 7 away from the grating plate 31 is in a horizontal state. At the same time, the photoelectric sensor 41 transmits an electrical signal to the control module 42, and then the control module 42 controls the driving member 32 to stop working.

[0071] Then, the control module 42 calculates the distance from the side wall of the wedge-shaped steel plate 7 away from the grating plate 31 to the workbench 1 through the stroke of the power component 324, the measured value of the photoelectric sensor 41, and the distance between the laser cutting head 2 and the workbench 1, so as to obtain the thickness of each position of the wedge-shaped steel plate 7. Then, the control module 42 plans the cutting path and adjusts the cutting parameters when cutting different thickness positions of the wedge-shaped steel plate 7.

[0072] Then, the control module 42 drives the moving component 12 to work, driving the installation frame 11 to move, so that the laser cutting head 2 moves along the planned path and cuts the wedge-shaped steel plate 7.

[0073] During cutting, the piston rod 542 slides relative to the cylinder block 541, causing the piston block 543 to slide within the cylinder block 541, allowing the damping medium to pass through the damping holes, thereby generating damping and absorbing the energy generated by the vibration of the equipment. As a result, the balance block 51 maintains a constant relative position, achieving vibration reduction for the laser cutting head 2. When any one of the travel switches 55 moves with the piston rod 542 to fit against the side wall of the cylinder block 541 that is approaching it, the sliding distance of the piston rod 542 exceeds the displacement generated by normal vibration, indicating that the equipment is operating abnormally or the laser cutting head 2 has a large displacement due to a collision. At this time, the pressure difference between the two sides of the piston block 543 is relatively large and reaches the opening pressure set by the first one-way valve 547 / second one-way valve 548. At this time, the first one-way valve 547 / second one-way valve 548 opens, increasing the passage for the damping medium, thereby reducing the generated damping, making it less likely to hinder the movement of the balance block 51, reducing the damage caused to the laser cutting head 2 during a collision. At the same time, the travel switch 55 transmits an electrical signal to the control module 42, and the control module 42 drives the moving component 12 to stop working.

[0074] After cutting is completed, the suction pump sucks air, thereby achieving air suction for the suction hood 61, realizing the flow of gas at the wedge-shaped steel plate 7, achieving cooling of the wedge-shaped steel plate 7. At the same time, the suction hood 61 adsorbs the metal chips generated during cutting, and after filtering through the filter screen 64, the metal chips fall into the collection box 63, realizing the collection and cleaning of the metal chips.

[0075] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A laser cutting device with a flexible dynamic balancing mechanism, characterized in that: It comprises a workbench, a mounting frame movably arranged on the workbench, and a moving component for driving the mounting frame to move in the X, Y and Z directions, the mounting frame is provided with a laser cutting head, the laser cutting head is arranged toward the workbench, and the workbench is provided with a supporting component for supporting and fixing a wedge-shaped steel plate, a detecting component for measuring the thickness of the wedge-shaped steel plate, and a balancing component for reducing vibration of the laser cutting head; The support assembly includes a grating plate that is lifted and arranged on the workbench, the grating plate includes a plurality of support plates and an abutment plate, the plurality of support plates and the abutment plate are arranged at intervals along the length direction of the workbench, the abutment plate is located on a horizontal side of the plurality of support plates, the abutment plate and the adjacent support plates are arranged in a stepped manner, when the wedge-shaped steel plate is placed on the grating plate, the inclined side of the wedge-shaped steel plate is fitted with the top wall of the support plate, and the large end of the wedge-shaped steel plate is movably fitted with the side wall of the abutment plate, and a driving member for driving the grating plate to be lifted and lowered synchronously in the steps is provided on the workbench; The detection component includes two photoelectric sensors arranged on the installation frame, the two photoelectric sensors are arranged at intervals and consistent with the arrangement direction of the grid plate, a control module is arranged on the workbench, and the photoelectric sensors, driving parts and moving components are all electrically connected to the control module.

2. The laser cutting device with a flexible dynamic balancing mechanism according to claim 1, characterized in that: A fixed frame is provided on the workbench, and the driving member includes guide columns provided on the opposite side walls of the grille plate. A driving plate is rotatably provided on the fixed frame, and the rotation axis of the driving plate is located on the side of the abutment plate away from the support plate. A guide groove is provided on the driving plate, and the guide column is movably located in the guide groove and slidably adapted to the guide groove. A limiting structure that makes it difficult for the grille plate and the fixed frame to rotate relative to each other and a power member that drives the driving plate to rotate are provided on the fixed frame, and the power member is electrically connected to the control module.

3. The laser cutting device with a flexible dynamic balancing mechanism according to claim 2, characterized in that: The driving member also includes a connecting rod rotatably set on the guide column, and the end of the connecting rod away from the guide column extends obliquely downward to the side of the abutment plate close to the support plate, and is rotatably connected to the outer wall of the fixed frame. An air cooling component with a wedge-shaped steel plate for cooling is provided on the workbench.

4. The laser cutting device with a flexible dynamic balancing mechanism according to claim 3, characterized in that: The air cooling component includes an air suction hood arranged in the workbench, the air suction hood is located at the bottom of the fixed frame, the air suction hood and the side walls of the fixed frame that are close to each other are fitted together, the air suction hood is provided with an air suction pipe, the end of the air suction pipe away from the air suction hood is connected to an air suction pump, a collection box is provided between the air suction hood and the air suction pipe, and a filter is provided in the collection box.

5. The laser cutting device with a flexible dynamic balancing mechanism according to claim 4, characterized in that: The balancing assembly includes a balancing block movably arranged in the installation frame, a steel wire rope is arranged on the inner top wall of the installation frame, the balancing block is connected to the steel wire rope, the laser cutting head is arranged on the balancing block, a counterweight block is arranged on the balancing block, the laser cutting head and the counterweight block are arranged opposite to each other and correspond to two opening ends of the installation frame respectively; The mounting frame is provided with a plurality of dampers for keeping the balancing block balanced. The damper comprises a cylinder body rotatably arranged on the inner side wall of the mounting frame, a piston rod is coaxially slidably arranged in the cylinder body, one end of the piston rod protrudes from the cylinder body, the protruding end of the piston rod is rotatably connected to the balancing block, a piston block is provided on the piston rod, the piston block is slidably adapted to the inner peripheral wall of the cylinder body, a high-viscosity damping medium is injected into the cylinder body, and a plurality of flow-blocking holes for the damping medium to pass through are opened on the piston block.

6. The laser cutting device with a flexible dynamic balancing mechanism according to claim 5, characterized in that: The piston block is provided with a plurality of first adjustment holes and a plurality of second adjustment holes, the plurality of first adjustment holes and the plurality of second adjustment holes are the same in number, and are evenly arranged at staggered intervals along the circumference of the piston block, a first one-way valve and a second one-way valve are respectively provided in the first adjustment hole and the second adjustment hole, and the opening and closing directions of the first one-way valve and the second one-way valve are opposite, and the first one-way valve and the second one-way valve are both opened when the set pressure is exceeded.

7. The laser cutting device with a flexible dynamic balancing mechanism according to claim 6, characterized in that: A travel switch is provided at the protruding end of the piston rod. The travel switch is movably fitted with the side walls of the cylinder body that are close to each other, and the travel switch is electrically connected to the control module.

8. The laser cutting device with a flexible dynamic balancing mechanism according to claim 7, characterized in that: A mounting block is fixed on the balancing block, a plug-in block is provided on the side wall of the laser cutting head close to the mounting block, a plug-in slot is provided on the mounting block for movably inserting the plug-in block, the plug-in block is movably fitted with the inner circumferential wall of the plug-in slot, the cross-section of the plug-in block is circular with a notch, a tightening cover is threadedly connected to the mounting block, the tightening cover is coaxially arranged with the plug-in block, and the tightening cover and the side wall of the plug-in block close to each other are movably tightened.

9. The laser cutting device with a flexible dynamic balancing mechanism according to claim 8, characterized in that: The counterweight block is threadedly fixed to the balancing block.

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