Laser cutting machine

Abstract

The invention discloses a laser cutting machine, and mainly relates to the field of mechanical equipment. Comprising a frame body, and a laser cutting mechanism and a clamping mechanism are arranged on the frame body; the laser cutting mechanism comprises a laser head, a supporting beam frame and a stroke driving device, the supporting beam frame is arranged at one end of the frame body, the stroke driving device is arranged at the upper end of the supporting beam frame, the laser head is arranged on the stroke driving device in a matched mode, and stroke movement of the laser head is achieved through the stroke driving device. The pipe cutting device has the beneficial effects that the clamping mechanism serves as a main structure capable of guaranteeing stable machining when a pipe is cut, compared with equipment in the prior art, the clamping jaw assembly is improved, the clamping jaw assembly is arranged to be a double-layer clamping body, and compared with an original single-layer clamping body, the clamping area is increased, and the clamping efficiency is improved; and the accuracy is improved in the machining process.

Description

Technical Field

[0001] The invention relates to the field of mechanical equipment, in particular to a laser cutting machine. Background Art

[0002] As a modern industrial equipment, the principle of laser cutting machine is to melt metal materials through laser heating. Laser cutting machine can realize the difficult processing of plates and pipes. Compared with traditional processing methods, laser cutting machine has many advantages such as no cutting force, no deformation during processing, no tool wear, good material adaptability (whether simple or complex parts, laser can be used for precise and rapid shaping and cutting at one time), high level of automation, etc. It is an inevitable development trend of sheet metal processing industry in the future.

[0003] When processing long pipes, existing laser cutting machines face the following problems: 1. Fig.16 As shown, when the pipe is being processed, the middle part of the pipe cannot be well supported, which causes the middle part of the pipe to sag, and the two ends of the pipe are prone to slight upward warping, which leads to processing deviations.

[0004] 2. For the stable support of polygonal pipes, the existing equipment structures are too complicated, such as the attached Fig.14 As shown, a plurality of rotating clamping heads are provided to realize a stable material support function for polygonal pipes. However, this type of material support design requires the polygonal pipes to pass through the center of the rotating clamping head in sequence during loading, which is very inconvenient and increases the loading time of the workers.

[0005] Therefore, it is necessary to design a laser cutting machine to improve the above problems so that the laser cutting machine equipment can perform accurate and stable cutting. Summary of the invention

[0006] The purpose of the present invention is to provide a laser cutting machine, which can be used for long pipes, overcome the phenomenon that the pipe droops in the middle and warps at both ends due to the lack of support in the middle position, increase the accuracy of pipe cutting, and can also be equipped with a follow-up supporting device to make the pipe more stable when pushing.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A laser cutting machine comprises a frame, on which a laser cutting mechanism and a clamping mechanism are arranged;

[0009] The laser cutting mechanism comprises a laser head, a support beam, and a travel drive device. The support beam is arranged at one end of the frame, the travel drive device is arranged at the upper end of the support beam, the laser head is arranged on the travel drive device, and the travel movement of the laser head is realized by the travel drive device.

[0010] The clamping mechanism includes a chuck clamping device and a tail clamping device;

[0011] The chuck clamping device comprises a fixed disc body, the fixed disc body is arranged in cooperation with the laser cutting mechanism, a rotating disc is rotatably arranged on the fixed disc body, a tube through hole is arranged at the center of the rotating disc, a plurality of clamping jaw assemblies are evenly arranged on the rotating disc around the tube through hole, a plurality of clamping jaw assemblies are arranged with double-layered clamping bodies on the clamping end faces, a gap exists between the double-layered clamping bodies, and the plurality of clamping jaw assemblies are meshed with each other through the gap between the double-layered frames;

[0012] The rear tail clamping device includes a base, a pneumatic clamp, and a supply servo motor. The base is slidably arranged on a frame, and the pneumatic clamp and the supply servo motor are arranged on the base. The base slides along the frame under the drive of the supply servo motor. The pneumatic clamp is provided with a rotary drive motor, and the rotary drive motor drives the pneumatic clamp to rotate.

[0013] It also includes a supporting mechanism, which is arranged in the middle position of the frame. The supporting mechanism includes a connecting component, which is used to connect with the frame. The connecting component is provided with a lifting component and a driving component. The driving component is fixedly arranged on the connecting component. The lifting component is attached to the connecting component to perform up and down lifting movements. The driving member is connected to the lifting component through a gear rack transmission mechanism.

[0014] The stroke driving device is composed of a Y-direction stroke component and a Z-direction stroke component. The Y-direction stroke component and the Z-direction stroke component are respectively provided with a Y-axis connecting plate and a Z-axis connecting plate, and the Y-axis connecting plate and the Z-axis connecting plate can respectively move in the Y-direction and the Z-direction relative to the Y-direction stroke component and the Z-direction stroke component. The Y-direction stroke component and the Z-direction stroke component are both provided with a stroke servo motor, and the stroke servo motor is respectively used to drive the Y-axis connecting plate and the Z-axis connecting plate to move along the Y-direction stroke component and the Z-direction stroke component.

[0015] A rotation drive motor is arranged on the fixed disk body, and an output end of the rotation drive motor is embedded in the fixed disk body and connected with the rotating disk through a gear structure.

[0016] A sliding block is disposed on the bottom surface of the base, and a sliding rail is disposed on the frame body corresponding to the sliding block, and the sliding block slides in cooperation with the sliding rail.

[0017] A helical gear is arranged on the output end of the supply servo motor, and a helical rack is arranged on the frame body to match the helical gear. The helical gear matches the helical rack to realize the driving of the base by the supply servo motor.

[0018] The rotation drive motor and the pneumatic clamp are connected via a gear transmission structure to realize the rotation drive of the pneumatic clamp.

[0019] The lifting assembly is provided with a clamping assembly on the surface opposite to the connecting assembly, and the clamping assembly includes a left clamping body, a right clamping body, and a driving cylinder. The driving cylinder is fixedly arranged at the lower end of the lifting assembly, and the left clamping body and the right clamping body are respectively slidably arranged at the two sides of the upper end of the lifting assembly, and a connecting rod mechanism is arranged between the left clamping body, the right clamping body and the driving cylinder, and the driving cylinder controls the left clamping body and the right clamping body to perform clamping or expansion movement through the connecting rod mechanism.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The laser cutting mechanism in the overall structure, as the core working mechanism of the device, can cut the pipe, and the clamping mechanism is the main structure of the device to ensure the stable processing of the pipe during cutting. Compared with the equipment in the prior art, improvements have been made in the clamping jaw assembly, and the clamping jaw assembly is set as a double-layer clamp. Compared with the original single-layer clamp, the clamping area is increased, and the problem of the two ends of the long pipe being warped is overcome, which increases the accuracy during the processing. At the same time, a supporting mechanism is further provided, and the supporting mechanism can be moved up and down with the movement, which can provide stable support for the polygonal pipe during processing, and further ensure the stability of the movement of the pipe when it moves axially. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 It is a schematic diagram of the specific structure of the present invention.

[0023] Attached Figure 2 It is a schematic diagram of the specific structure of the present invention.

[0024] Attached Figure 3 It is a schematic diagram of the specific structure of the laser cutting mechanism in the present invention.

[0025] Attached Figure 4 It is a schematic diagram of the specific structure of the laser cutting mechanism in the present invention.

[0026] Attached Figure 5 It is a schematic diagram of the specific structure of the chuck clamping device in the present invention.

[0027] Attached Figure 6 It is a schematic diagram of the specific structure of the chuck clamping device in the present invention.

[0028] Attached Figure 7 It is a schematic diagram of the specific structure of the rear tail clamping device in the present invention.

[0029] Attached Figure 8 It is a schematic diagram of the specific structure of the present invention.

[0030] Attached Fig. 9 The present invention is attached Figure 8 A partial enlarged view of .

[0031] Attached Fig.10 It is a specific structural schematic diagram of the material supporting mechanism in the present invention.

[0032] Attached Fig.11 It is a specific structural schematic diagram of the material supporting mechanism in the present invention.

[0033] Attached Fig.12 It is a motion diagram of the clamping assembly in the present invention.

[0034] Attached Fig.13 It is a schematic diagram of the rotation of the polygonal pipe in the present invention.

[0035] Attached Fig.14 It is a schematic diagram of the existing laser cutting equipment in the present invention.

[0036] Attached Fig.15 It is a schematic diagram of processing different surfaces of the pipe in the present invention.

[0037] Attached Fig.16 It is a schematic diagram of clamping a relatively long pipe in the present invention.

[0038] Numbers shown in the accompanying drawings:

[0039] 1. Frame; 2. Laser head; 3. Support beam; 4. Stroke drive device; 5. Fixed disk; 6. Rotating disk; 7. Pipe through hole; 8. Gripping claw assembly; 9. Double-layer clamp; 10. Base; 11. Pneumatic clamp; 12. Supply servo motor; 13. Rotation drive motor; 14. Connecting assembly; 15. Lifting assembly; 16. Driving assembly; 17. Y-axis stroke assembly; 18. Z-axis stroke assembly; 19. Y-axis connecting plate; 20. Z-axis connecting plate; 21. Stroke servo motor; 22. Rotation drive motor; 23. Sliding block; 24. Slide rail; 25. Bevel gear; 26. Bevel rack; 27. Clamping assembly; 28. Left clamp; 29. ​​Right clamp; 30. Driving cylinder; 31. Connecting rod mechanism; 32. Laser cutting mechanism; 33. Chuck clamping device; 34. Tail clamping device; 35. Supporting mechanism. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0041] The present invention is a laser cutting machine, the main structure of which includes a frame 1, on which a laser cutting mechanism 32 and a clamping mechanism are arranged. Figure 3 As shown, the laser cutting mechanism 32 includes a laser head 2, a support beam 3, and a travel drive device 4. The support beam 3 is arranged at one end of the frame 1, and the travel drive device 4 is arranged at the upper end of the support beam 3. The laser head 2 is arranged on the travel drive device 4, and the travel movement of the laser head 2 is realized by the travel drive device 4. For the above-mentioned support beam 3, as shown in the attached Figure 3 As shown in FIG. 4, the structure of the main body includes two vertical support columns and a horizontal plate. The two support columns are respectively arranged on both sides of the chuck clamping device 33 described below, and the horizontal plate is placed horizontally on the upper ends of the two support columns. As for the travel drive device 4, it should be noted that in order for the laser cutting machine to work, it must be able to meet the needs of the laser head 2 to move synchronously in the three axes of X, Y, and Z. As shown in the attached Figure 4As shown, the travel drive device 4 is composed of a Y-direction travel component 17 and a Z-direction travel component 18, and the Y-direction travel component 17 and the Z-direction travel component 18 are respectively provided with a Y-axis connecting plate 19 and a Z-axis connecting plate 20, and the Y-axis connecting plate 19 and the Z-axis connecting plate 20 can respectively move in the Y direction and the Z direction relative to the Y-direction travel component 17 and the Z-direction travel component 18, and the Y-direction travel component 17 and the Z-direction travel component 18 are both provided with a travel servo motor 21, and the travel servo motor 21 is respectively used to drive the Y-axis connecting plate 19 and the Z-axis connecting plate 20 to move along the Y-direction travel component 17 and the Z-direction travel component 18. The specific structural arrangement of the Y-direction travel component 17 and the Z-direction travel component 18 is described, the Y-direction travel component 17 is arranged on the support beam 3 along the Y-axis direction, and the Y-direction travel component 17 is arranged on the Y-axis connecting plate 19 along the Z-axis direction, and here, in order to meet the requirement that the Z-direction travel component 18 is arranged along the Z direction, the Y-axis connecting plate 19 is L-shaped. The laser head 2 is arranged on the Z-axis connecting plate 20. Meanwhile, the Y-axis connecting plate 19 is connected to the Y-stroke assembly 17 through a screw transmission structure, and the Z-axis connecting plate 20 is also connected to the Z-stroke assembly 18 in the same manner. At this time, the stroke servo motor 21 is connected to the Y-stroke assembly 17 and the screw on the Y-stroke assembly 17 respectively to drive the screw to rotate, so that the Y-axis connecting plate 19 and the Z-axis connecting plate 20 can be moved along the Y-axis and the Z-axis respectively, thereby realizing the moving cutting of the laser head 2. At the same time, the requirement for the moving cutting of the laser head 2 along the X-axis is realized by the tail supply device described below.

[0042] When the laser cutting equipment is processing, it is necessary to ensure that the pipe to be processed can be stably clamped, so as to ensure that the processed parts can meet the precise tolerance requirements. At the same time, it is also necessary to understand that when the pipe is laser cut, some pipes need to be as shown in the attached Fig.15 As shown, the cutting process is performed on different radial planes, so the pipe needs to be rotated during the cutting process.

[0043] Therefore, a clamping device is provided, and the clamping mechanism includes a chuck clamping device 33 and a rear tail clamping device 34. Figure 5As shown, the chuck clamping device 33 includes a fixed disc body 5, and the fixed disc body 5 is arranged in conjunction with the laser cutting mechanism 32. Here, the fixed disc body 5 is mainly used to connect and fix with the frame body 1. A rotating disc 6 is rotatably arranged on the fixed disc body 5, and here the rotating disc 6 is integrally embedded in the fixed disc body 5. A pipe through hole 7 is arranged at the center of the rotating disc 6, and a plurality of clamping jaw assemblies 8 are evenly arranged on the rotating disc 6 around the pipe through hole 7. The clamping end faces of the plurality of clamping jaw assemblies 8 are provided with double-layer clamping bodies 9, and there are gaps between the double-layer clamping bodies 9. The plurality of clamping jaw assemblies 8 are meshed with each other through the gaps between the double-layer frames 1. The double-layer clamp 9 is described. Since the device cuts the pipe in the X-axis direction by driving the pipe to move through the middle and rear clamping device 34, a roller shaft is provided on the clamping end face of the clamping jaw assembly 8 to facilitate the movement of the pipe. This also results in point or line contact between the clamping jaw assembly 8 and the pipe. When facing a long pipe, after clamping the two ends of the pipe, the following will appear. Fig.16 As shown in FIG. 1 , the middle part of the pipe sags due to gravity, and the front and rear ends slightly warp, which causes the front end of the pipe to have a cutting deviation. The style of the double-layer clamp 9 is shown in FIG. Fig.16 As shown in K, compared with the original single-layer clamp, the problem of the front end warping can be effectively restrained, and the gap between the double-layer frame 1 is explained. Since the number of multiple jaw assemblies 8 arranged in the device is four, and considering that the pipes to be clamped are round, square, and polygonal in shape, the clamping end face is a long strip. Therefore, in order to prevent adjacent jaw assemblies 8 from causing interference when clamping pipes with smaller diameters, there is a gap between the double-layer clamps 9, and the gap can accommodate a single clamp.

[0044] The rotation mode of the rotating disk 6 and the power supply for the multiple clamping jaw assemblies 8 to move on the rotating disk 6 are described; as shown in the attached Figure 6 As shown, a rotation drive motor 22 is arranged on the fixed disk body 5, and the output end of the rotation drive motor 22 is embedded in the fixed disk body 5 and connected to the rotating disk 6 through a gear structure. The rotating disk 6 is driven by the rotation drive motor 22, and the rotation drive motor 22 is specifically a servo motor. A plurality of driving cylinders 30 are arranged between the fixed disk body 5 and the rotating disk 6, and the plurality of driving cylinders 30 are arranged corresponding to the plurality of clamping jaw assemblies 8 to drive the plurality of clamping jaw assemblies 8.

[0045] As attached Figure 7As shown, the rear tail clamping device 34 includes a base 10, a pneumatic clamp 11, and a supply servo motor 12. The base 10 is slidably arranged on the frame 1, and the pneumatic clamp 11 and the supply servo motor 12 are arranged on the upper end of the base 10. Driven by the supply servo motor 12, the base 10 slides along the frame 1, so that the pipe can be moved in the X-axis direction. A rotary drive motor 13 is arranged on the pneumatic clamp 11, and the rotary drive motor 13 drives the pneumatic clamp 11 to rotate. The rotation rate of the rotary drive motor 13 here is the same as the rotation rate of the above-mentioned rotation drive motor 22.

[0046] The sliding structure between the base 10 and the frame 1, the method of supplying the servo electric drive to the base 10, and the method of rotating the driving motor 13 to drive the pneumatic clamp 11 to rotate are described in detail: Fig. 9 As shown, a sliding block 23 is provided on the bottom surface of the base 10, and a slide rail 24 is provided on the frame 1 corresponding to the sliding block 23, and the sliding block 23 slides in cooperation with the slide rail 24. A bevel gear 25 is provided on the output end of the supply servo motor 12, and a bevel rack 26 is provided on the frame 1 in cooperation with the bevel gear 25, and the bevel gear 25 cooperates with the bevel rack 26 to realize the driving of the base 10 by the supply servo motor 12. The rotation drive motor 13 and the pneumatic clamp 11 realize the rotation drive of the pneumatic clamp 11 through a gear transmission structure.

[0047] Considering that when processing a long pipe, there is no support in the middle of the pipe and the pipe will sag in the middle due to the release of gravity, further improvements are made to the device for this situation.

[0048] The device also includes a supporting mechanism 35, which is located in the middle of the frame 1. The supporting mechanism 35 includes a connecting assembly 14, which is used to connect with the frame 1. The connecting assembly 14 is provided with a lifting assembly 15 and a driving assembly 16. The driving assembly 16 is fixedly arranged on the connecting assembly 14. The lifting assembly 15 is attached to the connecting assembly 14 to perform an up and down lifting movement. The driving member is connected to the lifting assembly 15 through a gear rack transmission mechanism. This considers that when processing polygonal pipes, the pipes will appear as attached as they rotate. Fig.13As shown, there is a difference between the distance A between the center position of the polygonal tube and the bottom plane and the distance B between the center position and the bottom edge. When the polygonal tube rotates without changing the axis position, the tube rotates and the contact point at the bottom of the tube is not on the same horizontal line. Therefore, a lifting component 15 is provided so that it can be lifted up and down according to the rotation of the tube. The driving component 16 is to provide an output source for the lifting of the lifting component 15. Here, the driving component 16 preferably uses a servo motor.

[0049] It has been explained above that the lifting movement of the lifting assembly 15 will perform corresponding lifting movement with the rotation of the rotating disk 6 and the pneumatic clamp 11, and its specific structure is described here;

[0050] It is realized by arranging a pressure sensor at the upper end of the lifting component 15, and the pressure sensor is used to control the start and stop rotation of the driving component 16. It explains how the pressure sensor realizes the coordinated rotation and lifting between the rotating laser clamping head of the laser cutting machine, the rotating supply clamping device at the end, and the lifting component 15. First of all, when processing the pipe, the first step is to place the pipe on the laser cutting machine for positioning. The front end of the pipe is clamped by the laser clamping head, and the centering device on the laser clamping head performs the origin centering operation on the pipe, and the end of the pipe is clamped by the end supply clamping device. Therefore, when performing the positioning operation, first use the CNC system on the laser cutting machine to control the drive component 16 to make the lifting component 15 rise. When the lifting component 15 is in stable contact with the pipe, it stops rising. Here, by observing the signal given by the pressure sensor, it can be known whether the upper end of the lifting component 15 is in contact with the ground of the pipe. At the same time, in order to enable the lifting component 15 to provide more stable support, the lifting component 15 stops rising when the pressure sensor reaches a certain value. For example, when the pressure sensor value reaches 10, the lifting operation of the lifting component 15 is stopped. The pressure value here can be set differently according to different materials, and it is only used as an example here and has no limiting effect. When the lifting component 15 completes the support positioning, the CNC system automatically resets the setting of the connection between the plane of the pipe and the lifting component 15, as shown in the attached figure. Fig.13 As shown in A in the figure, the edge of the pipe gradually approaches the lifting assembly 15 when the pipe rotates. Fig.13 As shown in B, when the value of the pressure sensor is greater than 0, the lifting assembly 15 and the pipe are in interference contact, and the pressure sensor generates a signal to control the driving assembly 16 to rotate forward, so that the lifting assembly 15 descends. When the value of the pressure sensor reaches 0 again, the pressure sensor generates a signal to control the driving assembly 16 to stop rotating, and the lifting assembly 15 stops moving; when the pipe continues to rotate, the flat edge of the pipe gradually approaches the lifting assembly 15, as shown in the attached figure. Fig.13As shown in C, when the value of the pressure sensor is less than 0, there is a gap between the lifting assembly 15 and the pipe. The pressure sensor generates a signal to control the driving assembly 16 to reverse, so that the lifting assembly 15 rises. When the value of the pressure sensor reaches 0 again, the pressure sensor generates a signal to control the driving assembly 16 to stop rotating and the lifting assembly 15 stops moving.

[0051] Special explanation is given here on the coordinated rotation and lifting between the rotating disk 6, the pneumatic clamp 11 and the lifting assembly 15. In this field, for the control of the laser cutting machine, more common computer control programming software has been used. Therefore, for the coordinated rotation and lifting between the rotating disk 6, the pneumatic clamp 11 and the lifting assembly 15, not only the above-mentioned pressure sensor method can be used, but also it can be directly controlled by computer software. The above-mentioned setting can also be achieved by providing a spring part, which is a more common prior art in this field and does not serve as a design difficulty of the present device, and does not hinder the use of the present device.

[0052] The following description is made about the driving assembly 16 controlling the lifting assembly 15 to perform the up and down lifting motion:

[0053] As attached Fig.11 As shown, a gear rack transmission structure is arranged between the driving assembly 16 and the lifting assembly 15, and the gear in the gear rack transmission structure is connected to the output end of the driving assembly 16. The rack of the gear rack transmission structure is vertically arranged on the lifting assembly 15, and drives the gear to rotate under the driving assembly 16. At the same time, when the driving assembly 16 is fixed, the rack will move up and down with the rotation of the gear, thereby driving the lifting assembly 15 to move up and down. At the same time, in order to enable the lifting assembly 15 to perform a stable lifting movement along the connecting assembly 14, a slide rail 24 structure is arranged between the connecting assembly 14 and the lifting assembly 15. The slider and guide rail in the slide rail 24 structure are respectively arranged on the opposite surfaces of the connecting assembly 14 and the lifting assembly 15, and the slider and guide rail cooperate to move. The slide rail 24 structure can limit the lifting assembly 15, ensuring that the lifting assembly 15 performs a stable lifting movement.

[0054] The specific structural arrangement of the driving assembly 16, the connecting assembly 14, and the lifting assembly 15 is described as follows:

[0055] The connecting component 14 is located in the middle of the driving component 16 and the lifting component 15. A keyway hole is provided in the middle of the connecting component 14, and the output end of the driving component 16 passes through the keyway hole to connect with the lifting component 15. At the same time, the upper end of the connecting component 14 has a horizontal plate, which can facilitate the connection between the connecting component 14 and the body of the laser cutting machine.

[0056] At the same time, considering that the rear tail clamping device 34 will perform feeding movement according to processing requirements, a travel switch is provided at the position of the supporting device close to the rear tail clamping device 34. When the rear tail clamping device 34 passes the travel switch for the first time, the driving component 16 is controlled to rotate to make the lifting component 15 perform a downward movement. When the rear tail clamping device 34 passes the travel switch for the second time, the driving component 16 is controlled to rotate to make the lifting component 15 perform an upward movement. At the same time, after rising, when the upper end of the lifting component 15 is close to the pipe and reaches the specified pressure value, the upward movement is stopped.

[0057] As attached Fig.12 As shown, the lifting assembly 15 is provided with a clamping assembly 27 on the surface opposite to the connecting assembly 14, and the clamping assembly 27 includes a left clamping body 28, a right clamping body 29, and a driving cylinder 30. The driving cylinder 30 is fixedly arranged at the lower end of the lifting assembly 15, and the left clamping body 28 and the right clamping body 29 are respectively slidably arranged at the positions on both sides of the upper end of the lifting assembly 15, and a connecting rod mechanism 31 is arranged between the left clamping body 28, the right clamping body 29 and the driving cylinder 30, and the driving cylinder 30 controls the left clamping body 28 and the right clamping body 29 to perform clamping or expansion movement through the connecting rod mechanism 31. The specific structure of the connecting rod mechanism 31 is shown in the attached figure. Fig.12 As shown, the upper ends of the left connecting rod and the right connecting rod are respectively connected to the left clamp body 28 and the right clamp body 29, and the lower ends are connected to the piston rod of the driving cylinder 30 through a sliding plate. At the same time, the left clamp body 28, the right clamp body 29 and the lifting assembly 15 are also connected through the slide rail 24 structure. The left clamp body 28 and the right clamp body 29 are respectively provided with a left slider and a right slider. The lifting assembly 15 is provided with a transverse slide rail 24. The left slider and the right slider are matched with the transverse slide rail 24 to slide. As shown in the attached figure Fig.12 As shown in FIG. E, by making the piston rod of the driving cylinder 30 protrude out of the cylinder body, the sliding plate is pushed to move upward. At this time, under the limiting effect of the transverse slide rail 24, the left and right slide blocks can only slide to the outside of the two ends of the transverse slide rail 24, so that the left clamping body 28 and the right clamping body 29 can release the clamped pipe; otherwise, as shown in FIG. Fig.12As shown in F, the piston rod of the driving cylinder 30 is retracted into the cylinder, thereby driving the sliding plate to move downward. At this time, under the limiting effect of the transverse slide rail 24, the left and right slide blocks slide into the center of the transverse slide rail 24, so that the left clamp 28 and the right clamp 29 clamp the pipe. The clamping assembly 27 is provided because there are many machines and equipment in the existing working scene, and there is a slight shaking / vibration between the equipment during operation. This shaking / vibration is enough to affect the parts of the pipe that are not clamped. For short pipes, because the front and rear ends are clamped closely, there will be no impact, but for long pipes, it is enough to have an impact, so the clamping assembly 27 is provided to further ensure the stability of the pipe. At the same time, considering that the pipe needs to rotate in some cases during laser cutting, the clamping assembly 27 drives the piston rod of the cylinder 30 to move out of the cylinder body when the pipe needs to rotate, so that the left clamp body 28 and the right clamp body 29 release the pipe. When the rotation stops, the piston rod of the driving cylinder 30 is retracted into the cylinder body, so that the left clamp body 28 and the right clamp body 29 clamp the pipe.

[0058] Here, the coordination action between the clamping assembly 27 and the pipe can be controlled by the control system of the laser cutting machine in the industry of this field, and the above requirements are achieved by coding the control system. That is, the coordination action between the clamping assembly 27 and the pipe is not a technical difficulty of the device and can be achieved by existing technology.

[0059] Further considering that when the pipe is being processed, in order to reduce the friction between the pipe and the lifting assembly 15 and the clamping assembly 27 when the pipe is moving, a roller shaft is provided at the upper end of the lifting assembly 15 and at the joints between the left clamp body 28 and the right clamp body 29 and the pipe. The roller shaft can rotate under the action of external force.

Claims

1. A laser cutting machine, characterized in that: It comprises a frame (1), on which a laser cutting mechanism (32) and a clamping mechanism are arranged; The laser cutting mechanism (32) comprises a laser head (2), a support beam (3), and a travel drive device (4); the support beam (3) is arranged at one end of the frame (1); the travel drive device (4) is arranged at the upper end of the support beam (3); the laser head (2) is arranged on the travel drive device (4); and the travel movement of the laser head (2) is realized by the travel drive device (4); The clamping mechanism comprises a chuck clamping device (33) and a tail clamping device (34); The chuck clamping device (33) comprises a fixed disc body (5), the fixed disc body (5) is arranged in cooperation with the laser cutting mechanism (32), a rotating disc (6) is rotatably arranged on the fixed disc body (5), a tube through hole (7) is arranged at the center of the rotating disc (6), a plurality of clamping jaw assemblies (8) are evenly arranged on the rotating disc (6) around the tube through hole (7), the clamping end surfaces of the plurality of clamping jaw assemblies (8) are provided with double-layered sandwich bodies (9), gaps exist between the double-layered sandwich bodies (9), and the plurality of clamping jaw assemblies (8) are meshed with each other through the gaps between the double-layered frames (1); The rear tail clamping device (34) comprises a base (10), a pneumatic clamp (11), and a supply servo motor (12); the base (10) is slidably arranged on a frame (1); the pneumatic clamp (11) and the supply servo motor (12) are arranged on the base (10); the base (10) slides along the frame (1) under the drive of the supply servo motor (12); a rotary drive motor (13) is arranged on the pneumatic clamp (11); and the rotary drive motor (13) drives the pneumatic clamp (11) to perform a rotary motion.

2. A laser cutting machine according to claim 1, characterized in that: The invention also comprises a supporting mechanism (35), wherein the supporting mechanism (35) is arranged in the middle position of the frame (1), and the supporting mechanism (35) comprises a connecting component (14), wherein the connecting component (14) is used to be connected to the frame (1), and a lifting component (15) and a driving component (16) are arranged on the connecting component (14), and the driving component (16) is fixedly arranged on the connecting component (14), and the lifting component (15) is attached to the connecting component (14) to perform an up and down lifting movement, and the driving component is connected to the lifting component (15) through a gear rack transmission mechanism.

3. A laser cutting machine according to claim 1, characterized in that: The stroke drive device (4) is composed of a Y-axis stroke component (17) and a Z-axis stroke component (18); the Y-axis stroke component (17) and the Z-axis stroke component (18) are respectively provided with a Y-axis connecting plate (19) and a Z-axis connecting plate (20); and the Y-axis connecting plate (19) and the Z-axis connecting plate (20) are respectively capable of performing Y-axis movement and Z-axis movement relative to the Y-axis stroke component (17) and the Z-axis stroke component (18); the Y-axis stroke component (17) and the Z-axis stroke component (18) are both provided with a stroke servo motor (21); and the stroke servo motor (21) is respectively used to drive the Y-axis connecting plate (19) and the Z-axis connecting plate (20) to move along the Y-axis stroke component (17) and the Z-axis stroke component (18).

4. A laser cutting machine according to claim 1, characterized in that: A rotation drive motor (22) is arranged on the fixed disk body (5), and an output end of the rotation drive motor (22) is embedded in the fixed disk body (5) and connected to the rotating disk (6) via a gear structure.

5. The laser cutting machine according to claim 1, characterized in that: The bottom surface of the base (10) is provided with a sliding block (23), and the frame (1) is provided with a sliding rail (24) corresponding to the sliding block, and the sliding block slides in cooperation with the sliding rail (24).

6. The laser cutting machine according to claim 1, characterized in that: A bevel gear (25) is provided on the output end of the supply servo motor (12), and a bevel rack (26) is provided on the frame (1) to cooperate with the bevel gear (25). The bevel gear (25) cooperates with the bevel rack (26) to realize the driving of the base (10) by the supply servo motor (12).

7. The laser cutting machine according to claim 1, characterized in that: The rotation drive motor (13) and the pneumatic clamp (11) are connected via a gear transmission structure to realize rotation drive of the pneumatic clamp (11).

8. The laser cutting machine according to claim 2, characterized in that: The lifting component (15) is provided with a clamping component (27) on the surface opposite to the connecting component (14), and the clamping component (27) includes a left clamping body (28), a right clamping body (29), and a driving cylinder (30). The driving cylinder (30) is fixedly arranged at the lower end of the lifting component (15), and the left clamping body (28) and the right clamping body (29) are respectively slidably arranged at the positions on both sides of the upper end of the lifting component (15), and a connecting rod mechanism (31) is arranged between the left clamping body (28), the right clamping body (29) and the driving cylinder (30). The driving cylinder (30) controls the left clamping body (28) and the right clamping body (29) to perform clamping or expansion movement through the connecting rod mechanism (31).

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