Numerical control laser cutting machine

Abstract

The invention discloses a numerical control laser cutting machine, which belongs to the technical field of cutting equipment, and comprises a machine tool main body used for supporting the bottom of the whole equipment; the control computer is mounted on one side of the machine tool main body and is used for controlling the whole equipment to work; and the cutting assembly is located on one side of the movable portal frame, connected with the movable portal frame and used for cutting a machined part. The device has the beneficial effects that when the device is used, machined parts are placed at the top ends of the equidistant supporting columns densely provided with balls, and the first air cylinder pushes the whole frame composed of the limiting blocks, the telescopic rods and the springs to horizontally move along the strip-shaped protruding rails of the transverse supporting rods and the longitudinal supporting rods; therefore, all the supporting columns are driven to make sliding contact with the bottom face of the workpiece through the balls and integrally and horizontally avoid the laser beam flow, fusion deformation caused by the fact that laser directly irradiates the tops of the supporting columns after the workpiece is cut is avoided, the service life of supporting components is remarkably prolonged, and the table board flatness and the workpiece machining precision are continuously guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting equipment, in particular to a numerical control laser cutting machine. BACKGROUND

[0002] The laser cutting technology has widely replaced the traditional mechanical cutting and become the mainstream process in the field of metal plate processing due to its outstanding advantages of non-contact, narrow cutting, small heat-affected zone, high processing flexibility and the like. With the rapid upgrading of high-power fiber lasers and numerical control technology, the running speed, acceleration and power density of the laser cutting machine are continuously improved, which puts forward higher requirements for the machine tool structure, clamping mode and auxiliary support system. When the laser beam acts on the plate at a very high energy density, any component directly contacted with the beam may be melted or ablated instantaneously; At present, the common laser cutting machine usually adopts a densely arranged rack or a grid-shaped metal support table to support the plate. Such support table has simple structure and is convenient to manufacture, but has the following disadvantages in actual use: Since the support rack or the support structure such as grid is fixed, when the laser sensor motion track passes above the support rack, the laser beam will directly irradiate to the top end of the rack, causing local melting and deformation of the rack, resulting in uneven support table surface. The slag generated after the support rack is melted is easy to adhere to the back of the workpiece, increasing the subsequent polishing process; The support component needs to be frequently replaced after being damaged. The local melting not only significantly reduces the flatness of the support surface, causing the workpiece to warp and the cutting precision to decrease, but also shortens the service life of the support component.

[0003] Therefore, the present application develops a laser cutting machine support system which can significantly prolong the service life of the support component and maintain the processing precision. SUMMARY

[0004] One of the purposes of the present application is to solve the problem that the support rack of the existing laser cutting machine is easy to be damaged by the laser beam and provide a numerical control laser cutting machine.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a numerical control laser cutting machine, comprising: a machine tool main body for supporting work on the whole bottom of the equipment; a control computer installed on one side of the machine tool main body for controlling the whole work of the equipment; a movable gantry installed on the top of the machine tool main body for adjusting the cutting position; Further comprising: a cutting assembly located on one side of the movable gantry and connected with the movable gantry for cutting the workpiece; a moving assembly located below the movable gantry and connected with the machine tool main body; A discharging assembly is connected with the moving assembly and used for discharging and moving out the workpiece. A supporting assembly is installed inside the moving assembly and used for supporting the bottom of the workpiece.

[0006] Preferably, the cutting assembly comprises sliding rails installed on the top of the moving gantry, the sliding rails are provided with two, the two sliding rails are respectively connected with the bottom of the first moving seat and the second moving seat, the first moving seat and the second moving seat are both internally installed with a first motor, the output end of the first motor is externally sleeved with a roller, the roller is used for driving the first moving seat and the second moving seat to move, the second moving seat is provided with a hydraulic cylinder on both sides, the hydraulic cylinder is connected with the second moving seat through bolts, and the bottom of the hydraulic cylinder is externally sleeved with a fixed block made of rubber. The cutting assembly drives the first moving seat and the second moving seat to independently move through the double sliding rails, realizes the separation of the laser cutting and the workpiece fixing functions and the mutual non-interference, the first motor drives the roller to make the moving seat run stably and be accurately positioned, the hydraulic cylinders on both sides of the second moving seat can quickly press the rubber fixed block downward to stabilize the plate during the laser cutting, the fixed block made of rubber and the plate are flexibly contacted to increase the friction and protect the surface of the workpiece, the overall structure is compact and has high modularization, the cutting and clamping can be simultaneously completed without increasing the size of the gantry, and the processing efficiency, the accuracy and the equipment reliability are effectively improved.

[0007] Preferably, the first moving seat is installed with a lifting mechanism on one side, the lifting mechanism is installed with a laser cutting head on one side, the lifting mechanism is used for driving the laser cutting head to lift, the laser cutting head is installed with a first laser sensor and a second laser sensor on both sides of the bottom, and the first laser sensor and the second laser sensor are connected with the control computer signal; the structure drives the laser cutting head to quickly and accurately realize the Z-direction displacement through the lifting mechanism, guarantees the optimal focal length of the plate with different thicknesses, and improves the cutting quality; the first laser sensor and the second laser sensor installed on both sides of the cutting head emit detection beams in real time and communicate with the control computer in a closed loop, can feed back the obstacle information in time when the laser beam contacts the supporting column, triggers the horizontal avoidance action of the supporting column, effectively avoids the supporting member from being burned and melted by the laser, significantly prolongs the service life and maintains the processing accuracy; the double sensors are arranged at an included angle to expand the detection range, improve the obstacle avoidance reliability, are integrated on the first moving seat as a whole, have compact structure and quick response, and balance the cutting performance and the equipment safety.

[0008] Preferably, the moving component includes a frame, with a limiting block fixed to the side of the frame. The limiting block is connected to the frame by bolts and has a hollow internal structure. A groove is formed inside the limiting block, and this groove is slidably connected to a roller. The roller is fitted onto the outside of the telescopic end of a first cylinder. The other end of the first cylinder is fixedly mounted on the surface of the machine tool body. A telescopic rod is connected to the other side of the frame, and the other end of the telescopic rod is connected to the machine tool body. A spring is fitted onto the outside of the telescopic rod. There is a gap between the outer side of the frame and the machine tool body. This moving component drives the roller to slide precisely in the groove of the limiting block via the first cylinder, achieving rapid and stable horizontal displacement of the frame and support column as a whole, thereby avoiding the laser beam and preventing the support components from being burned. The hollow groove of the limiting block, in conjunction with the roller, serves both guiding and limiting functions, ensuring accurate and unbiased movement trajectory. The telescopic rod and spring combination on the other side of the frame form an elastic buffer, absorbing movement impact and automatically resetting, improving system stability and lifespan. A gap is reserved between the frame and the machine tool body to prevent thermal deformation or foreign object jamming, ensuring reliable long-term operation.

[0009] Preferably, the unloading assembly includes a mounting block, which is bolted to the inside of the frame. The mounting block has internal slots and is rotatably connected to a rotating shaft via these slots. A rotating block is fitted onto the outside of the rotating shaft, and the rotating block and the rotating shaft are fixedly installed together. One end of the rotating block is rotatably connected to a support shaft. The support shaft has telescopic structures at both ends, and the rotating blocks are distributed at both ends of the support shaft. A cam is fixedly mounted on one end of the rotating shaft, and one end of the cam is rotatably connected to the telescopic end of a second cylinder. Two second cylinders are provided, and the other ends of the two second cylinders are rotatably connected to a fixing component. The fixing component is... The frame is connected by bolts; the unloading assembly uses a linkage mechanism of cam-rotor-rotating block driven by a second cylinder to convert the linear extension and retraction of the cylinder into the synchronous inward retraction and overall lifting action of both ends of the support shaft, realizing the one-time overall lifting and single-side rollout of the workpiece after cutting, eliminating manual lifting and reducing labor intensity; the telescopic structure at both ends of the support shaft ensures that it maintains multi-point contact with the workpiece during the lifting process, preventing skewing or scratches; the mounting blocks and fasteners are all modularly connected to the frame with bolts, making disassembly and maintenance convenient; the overall mechanism is integrated inside the frame, with a compact structure, rapid and reliable operation, significantly improving unloading efficiency and shortening machine tool standby time.

[0010] Preferably, the support assembly includes multiple support columns evenly distributed throughout. One end of each support column is welded to the surface of a transverse support rod. Both ends of the transverse support rod are connected to the frame body via bolts. A support block is provided at the bottom of each transverse support rod, and a longitudinal support rod is provided at the bottom of each support block. Both ends of the longitudinal support rod are connected to the machine tool body. This support assembly uses multiple support columns welded at equal intervals to the transverse support rod and is quickly assembled and disassembled to the frame via bolts, forming a multi-point stable support that ensures the flatness of large-area plates and facilitates maintenance. The transverse support rods are transitioned to the longitudinal support rods via support blocks, forming a crisscrossing rigid load-bearing system that evenly transmits cutting force to the machine tool body, suppressing vibration and deformation. The support blocks and longitudinal support rods slide together, allowing the entire support column assembly to move horizontally synchronously with the frame, achieving active avoidance of the laser beam, preventing burns, significantly extending the lifespan of the support components, and maintaining processing accuracy.

[0011] Preferably, adjacent support columns are distributed at equal intervals. Each support column has a groove at its top, and a ball bearing is embedded within the groove. The ball bearing slides in contact with the surface of the support column. The support column supports the bottom of the workpiece. Two rollers are provided at both the bottom and top of the support block. Both the transverse and longitudinal support rods have strip-shaped protrusions on their surfaces. The surface of the support block engages with these protrusions on the transverse and longitudinal support rods, respectively. The support block slides against the surfaces of the transverse and longitudinal support rods via surface-mounted rollers. Dynamic connection; the equally spaced support columns and top ball bearings form a low-friction, damage-free rolling support surface, ensuring the flatness of the sheet metal and facilitating manual loading and unloading with gentle pushing and sliding; the support block engages with the strip-shaped protrusions of the horizontal and vertical support rods through four rollers, achieving bidirectional precise guidance and high rigidity load bearing, ensuring that the overall support array moves smoothly and is accurately positioned when avoiding laser beams, avoiding jamming; the rolling pair replaces the sliding pair, significantly reducing driving resistance, reducing cylinder load and wear, extending the life of the mechanism and improving response speed, thereby continuously maintaining processing accuracy and equipment reliability.

[0012] Preferably, a first laser sensor is mounted on one side of the laser cutting head, and a second laser sensor is mounted on the other side of the laser cutting head. The beams emitted by the first and second laser sensors form a 90-degree angle. A first and second stop are mounted on the surface of the frame, and the first and second stop are distributed in a straight line with equal spacing. Both the first and second stop are aligned with the support columns. By symmetrically mounting the first and second laser sensors at a 90-degree angle on both sides of the laser cutting head, the detection beam covers both directions of the cutting head, cooperating with the frame and the support columns. Aligned, equally spaced first and second stops achieve a one-to-one correspondence between the laser beam and the stop. When the laser beam from any sensor is blocked by the corresponding stop, the control computer immediately knows that the laser is about to directly hit the support column, thus precisely triggering the cylinder to drive the frame to avoid it horizontally. This not only prevents the support column from being burned or melted by the laser, but also ensures that there are no missing supports in the cutting path, continuously guaranteeing the flatness of the workpiece and the processing accuracy. The 360° angled layout expands the detection range and shortens the response time, while the alignment of the equally spaced stops with the support column simplifies the control logic and improves the system reliability, achieving a long lifespan, high precision, and low maintenance laser cutting operation.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: When in use, the workpiece is placed on top of a support column with evenly spaced, densely packed ball bearings. The moving gantry drives the laser cutting head to move along a sliding track to the area to be cut. When the detection beams emitted by the first and second laser sensors, which are at 90 degrees to each other on both sides of the laser sensor, are blocked by the first or second stop block aligned with the corresponding support column, the sensor immediately sends an obstacle signal to the control computer. The control computer then instructs the hydraulic cylinder to press down, causing the rubber fixing block to press the plate and keep the workpiece in place. At the same time, the first cylinder pushes the frame, which consists of a limit block, telescopic rod, and spring, to move horizontally along the strip-shaped protruding track of the transverse and longitudinal support rods. This causes all the support columns to slide into contact with the bottom surface of the workpiece with the help of the ball bearings and move horizontally away from the laser beam, avoiding direct contact with the top of the support columns after laser cutting and causing melting and deformation. After processing, the first cylinder retracts to reset the frame and support columns, realizing real-time automatic avoidance of the laser beam by the support system, significantly extending the life of the support components and continuously ensuring the flatness of the table and the processing accuracy of the workpiece. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a top view of the structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the mobile component of the present invention.

[0017] Figure 4 This is a schematic diagram of the cutting component structure of the present invention.

[0018] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0019] Figure 6 This is a schematic diagram of the longitudinal support rod structure of the present invention.

[0020] Figure 7 This is a schematic diagram of the sliding track structure of the present invention.

[0021] Figure 8 This is a schematic diagram of the supporting component structure of the present invention.

[0022] Figure 9 This is a schematic diagram of the support block structure of the present invention.

[0023] Figure 10 This is a schematic diagram of the unloading assembly structure of the present invention.

[0024] Figure 11 This is a schematic diagram of the structure of the first laser sensor of the present invention.

[0025] In the diagram: 1. Machine tool body; 2. Control computer; 3. Moving gantry; 4. Cutting assembly; 401. Sliding rail; 402. First moving seat; 403. First motor; 404. Second moving seat; 405. Hydraulic cylinder; 406. Fixing block; 407. Lifting mechanism; 408. Laser cutting head; 409. First laser sensor; 410. Second laser sensor; 5. Moving assembly; 501. Frame; 502. Limiting block; 503. ... 504. Cylinder 1; 505. First stop block; 506. Second stop block; 507. Telescopic rod; 508. Spring; 509. Roller; 600. Unloading assembly; 601. Mounting block; 602. Rotating block; 603. Rotating shaft; 604. Cam; 605. Second cylinder; 606. Fixing component; 607. Support shaft; 708. Support assembly; 701. Support block; 702. Lateral support rod; 703. Support column; 704. Longitudinal support rod; 705. Ball bearing. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] Example 1: One preferred embodiment of this application, such as Figures 1 to 11 As shown, a CNC laser cutting machine includes: The machine tool body 1 provides overall bottom support for the equipment. A control computer 2, mounted on one side of the machine tool body 1, controls the overall operation of the equipment. A movable gantry 3, mounted on the top of the machine tool body 1, adjusts the cutting position. The machine tool body also includes: a cutting assembly 4, located on one side of the movable gantry 3 and connected to it, for cutting the workpiece; a moving assembly 5, located below the movable gantry 3 and connected to the machine tool body 1; an unloading assembly 6, connected to the moving assembly 5, for unloading and removing the workpiece; and a support assembly 7, installed inside the moving assembly 5, for supporting the bottom of the workpiece. This CNC laser cutting machine integrates laser cutting, workpiece support, position avoidance, and automatic unloading into one unit. It actively drives the entire support structure to move horizontally out of the beam path when the laser beam is about to irradiate it, thereby preventing the support components from being melted and deformed by the laser. This solves the problems of traditional fixed support tables, such as rack melting due to direct laser beam, uneven table surface, slag adhering to the back of the workpiece, and frequent downtime to replace damaged support components. It significantly extends the life of the support system and maintains continuous processing accuracy. At the same time, after cutting, the entire workpiece can be lifted and pulled out from one side for unloading in one go, reducing manual intervention and secondary grinding processes, and improving the overall machine operation efficiency and finished product quality.

[0030] Example 2: One preferred embodiment of this application, such as Figures 1 to 11As shown, the cutting assembly 4 includes a sliding rail 401, which is mounted on the top of the movable gantry 3. Two sliding rails 401 are provided, and each is slidably connected to the bottom of a first movable seat 402 and a second movable seat 404, respectively. A first motor 403 is installed inside both the first movable seat 402 and the second movable seat 404. Rollers 508 are fitted externally to the output ends of the first motors 403 to drive the first movable seat 402 and the second movable seat 404 to move. Hydraulic cylinders 405 are provided on both sides of the second movable seat 404. The hydraulic cylinders 405... The first movable seat 402 is connected to the second movable seat 404 by bolts, and the bottom output end of the hydraulic cylinder 405 is fitted with a fixing block 406, the bottom of which is made of rubber. A lifting mechanism 407 is installed on one side of the first movable seat 402, and a laser cutting head 408 is installed on one side of the lifting mechanism 407. The lifting mechanism 407 is used to drive the laser cutting head 408 to lift. A first laser sensor 409 and a second laser sensor 410 are respectively installed on both sides of the bottom of the laser cutting head 408. The first laser sensor 409 and the second laser sensor 410 are connected to the control computer 2 by signal. The moving component 5 includes a frame 501, with a limiting block 502 fixed to the side of the frame 501. The limiting block 502 is connected to the frame 501 by bolts, and the limiting block 502 has a hollow internal structure with a groove inside. The groove inside the limiting block 502 is slidably connected to a roller 508, which is fitted onto the outside of the telescopic end of the first cylinder 503. The other end of the first cylinder 503 is fixedly mounted on the surface of the machine tool body 1. A telescopic rod 506 is connected to the other side of the frame 501, and the other end of the telescopic rod 506 is connected to the machine tool body 1. The frame 501 is connected to the machine tool body 1. A spring 507 is fitted on the outside of the telescopic rod 506. There is a gap between the outer side of the frame 501 and the machine tool body 1. The support assembly 7 includes a support column 703. Multiple support columns 703 are evenly distributed. One end of the bottom of the support column 703 is welded to the surface of the transverse support rod 702. The two ends of the transverse support rod 702 are connected to the frame 501 body by bolts. A support block 701 is provided at the bottom of the transverse support rod 702. A longitudinal support rod 704 is provided at the bottom of the support block 701. The two ends of the longitudinal support rod 704 are connected to the machine tool body 1. Adjacent support columns 703 are distributed in a regular pattern with equal spacing. The top of the support column 703 has a groove, and a ball bearing 705 is embedded in the groove. The ball bearing 705 slides in contact with the surface of the support column 703. The support column 703 is used to support the bottom of the workpiece. The support block 701 is provided with two rollers 508 at both the bottom and top. The surfaces of the transverse support rod 702 and the longitudinal support rod 704 are provided with strip-shaped protrusions. The surface of the support block 701 engages with the protrusions on the surfaces of the transverse support rod 702 and the longitudinal support rod 704, respectively. The support block 701 is slidably connected to the surfaces of the transverse support rod 702 and the longitudinal support rod 704 through the rollers 508 mounted on its surface.A first laser sensor 409 is mounted on the side of the laser cutting head 408, and a second laser sensor 410 is mounted on the other side of the laser cutting head 408. The beams emitted by the first laser sensor and the second laser sensor have an angle of 90 degrees. A first stop 504 and a second stop 505 are mounted on the surface of the frame 501. The first stop 504 and the second stop 505 are distributed in a straight line with equal spacing. The first stop 504 and the second stop 505 are aligned with the support column 703. In this embodiment, when the device is in use, the workpiece is placed on the support column 703, and then the welding head is moved by the moving gantry 3, so that the welding head can cut the workpiece placed on the surface of the support column 703. When the laser welding head moves above the support column 703 to cut, the laser emitted by the first laser sensor 409 or the second laser sensor 410 on both sides of the laser welding head surface can be blocked by the first stop 504 or the second stop 505. When the first laser sensor 409 and the second laser sensor 410 detect an obstacle within a specified range, they can feed back the signal to the control computer 2, so that the control computer 2 can drive the hydraulic cylinder 405 to move downward, so that the fixing block 406 at the bottom extension end of the hydraulic cylinder 405 can apply pressure to fix the surface of the cut plate. At the same time, the first cylinder 503 can push the frame 501 to move, and the plate is kept in place by the fixing block 406. While maintaining the processing position, the frame 501 can move the support column 703 at the bottom of the workpiece. The ball bearing 705 on the top of the support column 703 will slide into contact with the bottom of the workpiece. By moving the frame 501 and the support column 703 horizontally a specified distance, the support column 703 can automatically avoid the laser cutting head 408, thus preventing the laser beam from directly hitting the support column 703 after cutting the workpiece, which would cause the top of the support component to melt and affect the flatness of the workpiece support. After processing, the first cylinder 503 can retract, allowing the support column 703 and the frame 501 to automatically reset. Through the cooperation of the support column 703 with the first laser sensor 409 and the second laser sensor 410, the support column 703 can automatically avoid the laser cutting beam, preventing the top of the support column 703 from directly contacting the laser beam and melting, thereby helping to extend the service life of the cutting machine and maintain processing accuracy.

[0031] Example 3: One preferred embodiment of this application, such as Figures 1 to 11As shown, the unloading assembly 6 includes a mounting block 601, which is internally connected to the frame 501 by bolts. The mounting block 601 has a slot inside and is rotatably connected to the rotating shaft 603 through the internal slot. A rotating block 602 is fitted on the outside of the rotating shaft 603. The rotating block 602 and the rotating shaft 603 are fixedly installed together. One end of the rotating block 602 is rotatably connected to the support shaft 607. The two ends of the support shaft 607 are telescopic structures. The rotating blocks 602 are distributed at both ends of the support shaft 607. A cam 604 is fixedly installed on one end of the rotating shaft 603. One end of the cam 604 is rotatably connected to the telescopic end of the second cylinder 605. There are two second cylinders 605. The other ends of the two second cylinders 605 are rotatably connected to the fixing member 606. The fixing member 606 is connected to the frame 501 by bolts. In this embodiment, after cutting is completed, the extension end of the second cylinder 605 retracts, thereby driving the cam 604 to rotate. The rotation of the cam 604 drives the rotating shaft 603 to rotate, and the rotation of the rotating shaft 603 drives the rotating block 602 to rotate. The rotating blocks 602 at both ends of the support shaft 607 rotate in opposite directions, causing the extension structure at both ends of the support shaft 607 to retract. At the same time, the support shaft 607 can move upward. When multiple support shafts 607 move upward, the workpiece can be lifted upward. By rolling the support shaft 607, the workpiece can be easily pulled out from one direction for unloading.

[0032] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A CNC laser cutting machine, comprising: The machine tool body (1) is used for overall bottom support of the equipment; A control computer (2) is installed on one side of the machine tool body (1) and is used to control the overall operation of the equipment; A movable gantry (3) is installed on top of the machine tool body (1) to adjust the cutting position; Its characteristic is that it further includes: The cutting assembly (4) is located on one side of the movable gantry (3) and connected to the movable gantry (3) for cutting the workpiece; The moving component (5) is located below the moving gantry (3) and is connected to the machine tool body (1); The unloading assembly (6) is connected to the moving assembly (5) and is used to unload and remove the processed workpiece; The support component (7) is installed inside the movable component (5) and is used to support the bottom of the workpiece.

2. The CNC laser cutting machine as described in claim 1, characterized in that: The cutting assembly (4) includes a sliding rail (401), which is installed on the top of the movable gantry (3). There are two sliding rails (401), which are slidably connected to the bottom of the first movable seat (402) and the second movable seat (404), respectively. The first movable seat (402) and the second movable seat (404) are each equipped with a first motor (403). The output end of the first motor (403) is fitted with a roller (508) for driving the first movable seat (402) and the second movable seat (404) to move. The second movable seat (404) is equipped with hydraulic cylinders (405) on both sides. The hydraulic cylinders (405) are connected to the second movable seat (404) by bolts, and the bottom output end of the hydraulic cylinder (405) is fitted with a fixing block (406). The bottom of the fixing block (406) is made of rubber.

3. The CNC laser cutting machine as described in claim 2, characterized in that: A lifting mechanism (407) is installed on one side of the first movable seat (402), and a laser cutting head (408) is installed on one side of the lifting mechanism (407). The lifting mechanism (407) is used to drive the laser cutting head (408) to rise and fall. A first laser sensor (409) and a second laser sensor (410) are respectively installed on both sides of the bottom of the laser cutting head (408). The first laser sensor (409) and the second laser sensor (410) are connected to the control computer (2) via signals.

4. A CNC laser cutting machine as described in claim 3, characterized in that: The moving component (5) includes a frame (501), a limiting block (502) is fixed on the side of the frame (501), the limiting block (502) is connected to the frame (501) by bolts, and the limiting block (502) has a hollow structure inside. The limiting block (502) has a groove inside, and the groove inside the limiting block (502) is slidably connected to a roller (508). The roller (508) is fitted outside the telescopic end of the first cylinder (503). The other end of the first cylinder (503) is fixedly installed on the surface of the machine tool body (1). A telescopic rod (506) is connected to the other side of the frame (501). The other end of the telescopic rod (506) is connected to the machine tool body (1). A spring (507) is fitted outside the telescopic rod (506). There is a gap between the outer side of the frame (501) and the machine tool body (1).

5. A CNC laser cutting machine as described in claim 4, characterized in that: The unloading assembly (6) includes a mounting block (601), which is internally connected to the frame (501) by bolts. The mounting block (601) has a slot inside, and is rotatably connected to the rotating shaft (603) through the slot. A rotating block (602) is fitted onto the outside of the rotating shaft (603). The rotating block (602) and the rotating shaft (603) are fixedly installed together. One end of the rotating block (602) is rotatably connected to the support shaft (607). The support shaft (607) has telescopic structures at both ends. The rotating blocks (602) are distributed at both ends of the support shaft (607). A cam (604) is fixedly installed at one end of the rotating shaft (603). One end of the cam (604) is rotatably connected to the telescopic end of the second cylinder (605). There are two second cylinders (605). The other end of the two second cylinders (605) is rotatably connected to the fixing member (606). The fixing member (606) is connected to the frame (501) by bolts.

6. A CNC laser cutting machine as described in claim 5, characterized in that: The support assembly (7) includes a support column (703), and multiple support columns (703) are evenly distributed. One end of the bottom of the support column (703) is welded to the surface of the transverse support rod (702). Both ends of the transverse support rod (702) are connected to the main body of the frame (501) by bolts. A support block (701) is provided at the bottom of the transverse support rod (702). A longitudinal support rod (704) is provided at the bottom of the support block (701). Both ends of the longitudinal support rod (704) are connected to the machine tool body (1).

7. A CNC laser cutting machine as described in claim 6, characterized in that: The adjacent support columns (703) are distributed in a regular pattern with equal spacing. The top of the support column (703) is provided with a groove. A ball bearing (705) is embedded in the groove at the top of the support column (703). The ball bearing (705) slides in contact with the surface of the support column (703). The support column (703) is used to support the bottom of the workpiece. The support block (701) is provided with two rollers (508) at the bottom and top. The surfaces of the transverse support rod (702) and the longitudinal support rod (704) are provided with strip-shaped protrusions. The surface of the support block (701) engages with the protrusions on the surfaces of the transverse support rod (702) and the longitudinal support rod (704), respectively. The support block (701) is slidably connected to the surfaces of the transverse support rod (702) and the longitudinal support rod (704) through the rollers (508) mounted on the surface.

8. A CNC laser cutting machine as described in claim 7, characterized in that: A first laser sensor (409) is installed on the side of the laser cutting head (408), and a second laser sensor (410) is installed on the other side of the laser cutting head (408). A first stop (504) and a second stop (505) are installed on the surface of the frame (501). The first stop (504) and the second stop (505) are distributed in a straight line with equal spacing. The first stop (504) and the second stop (505) are aligned with the support column (703).

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