Laser pipe cutting chuck

Abstract

The invention discloses a laser pipe cutting chuck, and belongs to the technical field of laser cutting equipment.The laser pipe cutting chuck comprises a supporting mechanism, a chuck shell is arranged in the center of the interior of the supporting mechanism, and a sealing cover is fixedly installed at the front end of the chuck shell; a plurality of limiting holes are formed in the sealing cover, a rotating mechanism is installed on the outer side of the chuck shell, and a chuck assembly is installed in the center of the front end of the sealing cover. By designing the chuck assembly, round pipes with different diameters and square pipes with different sizes can be clamped, the pipes can be conveniently moved during cutting so as to achieve cutting of different shapes, functionality is high, meanwhile, multiple points of the outer walls of the pipes are clamped in the clamping process, pressure can be dispersed through the multiple clamping points, and the clamping efficiency is improved. Local overload is avoided, the pipe is prevented from deforming during cutting, meanwhile, the multiple clamping points can better fix the pipe, and the stability of the pipe in the cutting process is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting equipment, and in particular relates to a laser tube cutting chuck. Background Art

[0002] Laser tube cutting chuck is a special fixture for laser cutting machine, which is mainly used to fix and support the tube to be cut. During the laser cutting process, the chuck can ensure that the tube maintains a stable position during cutting, thereby improving cutting accuracy and efficiency. According to the different structures and functions, laser tube cutting chucks are divided into mechanical clamping chucks: clamping the tube mechanically, usually using manual or electric methods to adjust the clamping force, suitable for tubes of various diameters and lengths, simple operation; pneumatic clamping chuck: using air pressure for clamping, fast and stable, suitable for high-frequency cutting operations, reducing manual operation time; hydraulic clamping chuck: clamping the tube through the hydraulic system, providing greater clamping force, suitable for cutting larger diameter and thick-walled tubes; automatic adjustment chuck: can automatically adjust the clamping position and force according to the diameter and length of the tube, improving operation efficiency and reducing manual intervention; rotating chuck: allows the tube to rotate during the cutting process to achieve multi-angle cutting, suitable for application scenarios requiring complex cutting paths.

[0003] The existing laser tube cutting chuck has a relatively simple structural design and poor functionality. It usually clamps round tubes. When clamping and cutting square tubes, the corresponding chuck needs to be replaced, which affects the processing efficiency. In addition, the chuck design on the existing laser tube cutting chuck is relatively simple, and the clamping accuracy of the tube is not high, which in turn affects the subsequent laser cutting accuracy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a laser tube cutting chuck.

[0005] The technical solution adopted to solve the above technical problems is: a laser tube cutting chuck, comprising a support mechanism, a chuck shell is provided at the inner center of the support mechanism, and a sealing cover is fixedly installed at the front end of the chuck shell; The sealing cover is provided with a plurality of limiting holes, a rotating mechanism is installed on the outer side of the chuck housing, and a chuck assembly is installed at the front center of the sealing cover; The rear end of the sealing cover is fixedly connected with a plurality of limit seats, the rear end of the sealing cover is installed with a driving mechanism, the inner center of the chuck housing is installed with a limit mechanism, and the center of the chuck assembly is provided with a pipe.

[0006] Furthermore, the support mechanism includes a support seat, a sleeve is fixedly connected to the top center of the support seat, and a limiting sliding groove is provided on the inner wall of the sleeve.

[0007] Through the above technical solution, the pipe cutting chuck can be installed on the laser cutting equipment through the support seat, which is convenient for cutting the pipe. The shell provides sealing protection for the internal parts of the chuck, thereby increasing its service life.

[0008] Furthermore, the rotating mechanism includes a limiting ring fixedly connected to the rear end of the outer wall of the chuck shell, the front end of the outer wall of the chuck shell is fixedly connected to a first gear ring, a driving motor is fixedly installed on the support seat, the outer wall of the driving motor output shaft is fixedly connected to a first gear, and the first gear is meshed with the first gear ring.

[0009] Through the above technical solution, when the pipe is rotated, the drive motor is started, and the drive motor drives the first gear to rotate through the output shaft, so that the first gear drives the first gear ring to rotate, and the first gear ring drives the chuck shell to rotate, and then drives the entire pipe cutting chuck to rotate, so that the pipe can be rotated during cutting, which is convenient for processing at different angles and increases the flexibility of processing.

[0010] Furthermore, the limiting ring is slidably connected to the limiting sliding groove, and the first gear ring is located in the sleeve housing.

[0011] Through the above technical solution, during the rotation of the chuck shell, the limiting ring connected to its outer wall slides in the limiting groove, which greatly improves the stability of the chuck shell during rotation, thereby improving the cutting accuracy of the pipe. At the same time, the sleeve provides sealing protection for the first gear ring to prevent dust from adhering to the first gear ring, thereby increasing the service life of the first gear ring.

[0012] Furthermore, the chuck assembly includes multiple slides, each of which is slidably connected to the corresponding limiting holes, the rear ends of each of which are fixedly connected to a toothed plate, and the front ends of each of which are fixedly connected to two first main chucks and two second main chucks.

[0013] Through the above technical scheme, when clamping a round or square tube, first the two first main chucks and the two second main chucks move toward each other to quickly clamp and fix the outer wall of the round or square tube. When the tube moves during the cutting process, the clamping rollers on the two first main chucks and the two second main chucks roll accordingly, which is convenient for the tube to move during cutting, so as to achieve multi-angle cutting. When clamping an elliptical or rectangular tube, first the two first main chucks move toward each other to clamp and position the outer wall of the elliptical or rectangular tube, and then the two second main chucks move toward each other to clamp and fix the outer wall of the elliptical or rectangular tube. It can clamp round tubes of different diameters and square tubes of different sizes, and it is convenient for the tube to move during cutting to achieve cutting of different shapes, with strong functionality.

[0014] Furthermore, a first auxiliary chuck is provided at the front end of the two first main chucks, a second auxiliary chuck is provided at the front end of the two second main chucks, a plurality of mounting holes are provided at the front ends of the two first main chucks, the two first auxiliary chucks, the two second main chucks and the two second auxiliary chucks, and a plurality of fixing bolts are respectively installed between the two first main chucks and the corresponding first auxiliary chucks and between the two second main chucks and the corresponding second auxiliary chucks.

[0015] Through the above technical solution, when the two first main chucks and the two second main chucks are clamped on the outer wall of the pipe, the two first auxiliary chucks and the second auxiliary chucks are clamped on the outer wall of the pipe, so that the outer wall of the pipe is clamped at multiple points. The multiple clamping points can disperse the pressure, avoid local overload, and prevent the pipe from deforming during cutting. At the same time, the multiple clamping points can better fix the pipe, greatly improving the stability of the pipe cutting process. When the first auxiliary chuck and the second auxiliary chuck are damaged, the staff can remove the corresponding fixing bolts to replace them, which is simple to operate.

[0016] Furthermore, the plurality of slide seats are respectively slidably connected to corresponding limit seats.

[0017] Through the above technical solution, multiple slides slide on the corresponding limiting seats and slide with the corresponding limiting holes, further improving the stability of the two first main chucks and the two second main chucks when moving.

[0018] Furthermore, the driving mechanism includes a plurality of mounting seats fixedly connected to the rear end of the sealing cover, each of the plurality of mounting seats is rotatably connected to a hydraulic cylinder, the rear end of the sealing cover is rotatably connected to a plurality of second gears, and one end of the plurality of hydraulic cylinder pistons is rotatably connected to the corresponding second gears.

[0019] Through the above technical solution, when clamping a round or square tube, multiple hydraulic cylinders are started, and the connected second gear is pushed by the corresponding piston, and the corresponding tooth plate is driven to move through the limit mechanism, thereby driving the two first main chucks and the two second main chucks to move toward each other, so as to achieve the clamping of the round or square tube. When clamping an elliptical or rectangular tube, two of the hydraulic cylinders are started first, driving the two first main chucks to clamp the outer wall of the tube first, and then the other two hydraulic cylinders are started to drive the two second main chucks to further clamp the tube. The clamping force provided by multiple hydraulic cylinders greatly improves the stability of the tube clamping.

[0020] Furthermore, the limiting mechanism includes a fixed sleeve fixedly connected to the front end center of the chuck shell, the outer wall center of the fixed sleeve is rotatably connected to the second gear ring, the front end of the outer wall of the fixed sleeve is rotatably connected to the third gear ring, the rear end of the outer wall of the fixed sleeve is respectively fixedly connected to a plurality of first connecting seats and a plurality of second connecting seats, and the plurality of first connecting seats are rotatably connected to main gears and limiting gears, and the plurality of main gears are located at the front end positions of the corresponding limiting gears, and the plurality of second connecting seats are rotatably connected to sub gears.

[0021] Through the above technical solution, when a round or square tube is clamped, two of the second gears rotate, driving the meshing limit gears to rotate, thereby driving the adjacent main gears to rotate, and then driving the toothed plate meshing with the main gears to move, thereby achieving the clamping of the tube by the two first main chucks. When the other second gear rotates, the two second main chucks are further clamped to the tube. When the multiple toothed plates move, they mesh with the corresponding sub-gears, thereby improving the stability of the toothed plates when moving, thereby improving the stability of the clamping of the tube.

[0022] Furthermore, the plurality of limit gears are respectively meshed with the second gear ring and the third gear ring, the plurality of gear plates are respectively meshed with the corresponding main gear and sub gear, and the plurality of second gears are meshed with the corresponding limit gears.

[0023] Through the above technical solution, when two of the limit gears rotate, they drive the meshing second gear ring to rotate. At the same time, the rotation of the other two limit gears drives the meshing third gear ring to rotate, ensuring the synchronization of the corresponding two main gears, and then ensuring the synchronization of the two first main chucks and the two second main chucks, greatly improving the clamping accuracy of the pipe.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention can clamp round tubes of different diameters and square tubes of different sizes by designing a chuck assembly, and can facilitate the movement of the tube during cutting to achieve cutting of different shapes, with strong functionality. At the same time, the outer wall of the tube is clamped at multiple points during the clamping process, and the multiple clamping points can disperse the pressure, avoid local overload, and prevent the tube from deforming during cutting. At the same time, the multiple clamping points can better fix the tube, greatly improving the stability of the tube during cutting; (2) The present invention greatly improves the stability of the tube clamping by designing a driving mechanism and a limiting mechanism, and the clamping force provided by multiple hydraulic cylinders. The synchronization of the two corresponding main gears is ensured by the limiting mechanism, thereby ensuring the synchronization of the two first main chucks and the two second main chucks, greatly improving the clamping accuracy of the tube; (3) The present invention realizes the rotation of the tube during cutting by designing a rotating mechanism, which is convenient for processing at different angles and increases the flexibility of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a first-view appearance diagram of the present invention; Figure 2 is a second viewing angle appearance diagram of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a schematic diagram of the internal parts structure of the support mechanism and the rotating mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the driving mechanism and the limiting mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the limiting mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the chuck assembly of the present invention; Figure 8 It is an expanded view of the chuck assembly of the present invention.

[0026] Reference numerals: 1, support mechanism; 101, support seat; 102, sleeve shell; 103, limit slide groove; 2, chuck shell; 3, sealing cover; 4, limit hole; 5, rotating mechanism; 501, limit ring; 502, first gear ring; 503, driving motor; 504, first gear; 6, chuck assembly; 601, slide seat; 602, tooth plate; 603, first main chuck; 6031, first auxiliary chuck; 604, second main chuck; 6041, second auxiliary chuck; 605, mounting hole; 606, fixing bolt; 7, limiting seat; 8, driving mechanism; 801, mounting seat; 802, hydraulic cylinder; 803, second gear; 9, limiting mechanism; 901, fixing sleeve; 902, second gear ring; 903, third gear ring; 904, first connecting seat; 905, second connecting seat; 906, main gear; 907, limiting gear; 908, auxiliary gear; 10, pipe. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figure 1-Figure 8 As shown, a laser tube cutting chuck of the present embodiment comprises a supporting mechanism 1, the supporting mechanism 1 comprises a supporting seat 101, a sleeve 102 is fixedly connected to the top center of the supporting seat 101, a limiting slide groove 103 is provided on the inner wall of the sleeve 102, the tube cutting chuck can be installed on the laser cutting equipment through the supporting seat 101, so as to facilitate the cutting of the tube 10, and the sleeve 102 provides sealing protection for the internal parts of the chuck, thereby improving its service life.

[0029] like Figure 1-Figure 4 As shown, a chuck housing 2 is provided at the inner center of the support mechanism 1, a sealing cover 3 is fixedly installed at the front end of the chuck housing 2, a plurality of limiting holes 4 are opened on the sealing cover 3, a rotating mechanism 5 is installed on the outer side of the chuck housing 2, the rotating mechanism 5 includes a limiting ring 501 fixedly connected to the rear end of the outer wall of the chuck housing 2, a first gear ring 502 is fixedly connected to the front end of the outer wall of the chuck housing 2, a driving motor 503 is fixedly installed on the support seat 101, a first gear 504 is fixedly connected to the outer wall of the output shaft of the driving motor 503, the first gear 504 is meshed with the first gear ring 502, when the pipe 10 is rotated, the driving motor 503 is started, and the driving motor 503 drives the first gear 504 to rotate through the output shaft, so that the first gear 504 drives The first gear ring 502 is driven to rotate, so that the first gear ring 502 drives the chuck shell 2 to rotate, and then drives the entire pipe cutting chuck to rotate, so that the pipe 10 can be rotated during cutting, which is convenient for processing at different angles and increases the flexibility of processing. The limiting ring 501 is slidably connected with the limiting slide groove 103, and the first gear ring 502 is located in the sleeve shell 102. During the rotation of the chuck shell 2, the limiting ring 501 connected to its outer wall slides in the limiting slide groove 103, which greatly improves the stability of the chuck shell 2 during rotation, thereby improving the cutting accuracy of the pipe 10. At the same time, the sleeve shell 102 provides sealing protection for the first gear ring 502 to prevent dust from adhering to the first gear ring 502, thereby increasing the service life of the first gear ring 502.

[0030] like Figure 1-Figure 8As shown, a chuck assembly 6 is installed at the front center of the sealing cover 3, and the chuck assembly 6 includes a plurality of slide seats 601, and the plurality of slide seats 601 are respectively slidably connected to the corresponding limiting holes 4, and the rear ends of the plurality of slide seats 601 are fixedly connected with tooth plates 602, and the front ends of the plurality of slide seats 601 are respectively fixedly connected with two first main chucks 603 and two second main chucks 604. When clamping the round or square pipe 10, firstly, the two first main chucks 603 and the two second main chucks 604 are moved toward each other to quickly clamp and fix the outer wall of the round or square pipe 10. When the pipe 10 moves during the cutting process, the two first main chucks 603 and the two second main chucks 60 The clamping rollers on 4 roll accordingly, which facilitates the movement of the tube 10 during cutting to achieve multi-angle cutting. When clamping the elliptical or rectangular tube 10, the two first main chucks 603 first move toward each other to clamp and position the outer wall of the elliptical or rectangular tube 10, and the two second main chucks 604 move toward each other again to clamp and fix the outer wall of the elliptical or rectangular tube 10. It can clamp circular tubes 10 of different diameters and square tubes 10 of different sizes, and it is convenient to move the tube 10 during cutting to achieve cutting of different shapes. It has strong functionality. The front ends of the two first main chucks 603 are each provided with a first auxiliary chuck 6031, and the two second main chucks 60 4 are provided with a second auxiliary chuck 6041 at the front end, and a plurality of mounting holes 605 are provided at the front ends of the two first main chucks 603, the two first auxiliary chucks 6031, the two second main chucks 604 and the two second auxiliary chucks 6041. A plurality of fixing bolts 606 are respectively installed between the two first main chucks 603 and the corresponding first auxiliary chucks 6031 and between the two second main chucks 604 and the corresponding second auxiliary chucks 6041. When the two first main chucks 603 and the two second main chucks 604 are clamped on the outer wall of the pipe 10, the two first auxiliary chucks 6031 and the second auxiliary chucks 6041 are clamped on the outer wall of the pipe 10, so as to achieve the fixing of the pipe 10. The outer wall is clamped at multiple points, and the multiple clamping points can disperse the pressure, avoid local overload, and prevent the pipe 10 from deforming during cutting. At the same time, the multiple clamping points can better fix the pipe 10, greatly improving the stability of the pipe 10 during cutting. When the first auxiliary clamp 6031 and the second auxiliary clamp 6041 are damaged, the staff can remove the corresponding fixing bolts 606 to replace them. The operation is simple. The multiple slides 601 are respectively slidably connected to the corresponding limit seats 7, and the multiple slides 601 slide on the corresponding limit seats 7 and slide with the corresponding limit holes 4, further improving the stability of the two first main clamps 603 and the two second main clamps 604 when moving.

[0031] like Figure 1-Figure 5As shown, the rear end of the sealing cover 3 is fixedly connected with a plurality of limit seats 7, and the rear end of the sealing cover 3 is installed with a driving mechanism 8, which includes a plurality of mounting seats 801 fixedly connected to the rear end of the sealing cover 3, and the plurality of mounting seats 801 are rotatably connected with hydraulic cylinders 802, and the rear end of the sealing cover 3 is rotatably connected with a plurality of second gears 803, and one end of the piston of the plurality of hydraulic cylinders 802 is rotatably connected with the corresponding second gear 803. When the round or square pipe 10 is clamped, the plurality of hydraulic cylinders 802 are all started, and the connected second gear 803 is pushed by the corresponding piston, and the second gear 803 is driven by the corresponding piston. The limiting mechanism 9 drives the corresponding tooth plate 602 to move, and then drives the two first main chucks 603 and the two second main chucks 604 to move toward each other, so as to clamp the round or square tube 10. When clamping the elliptical or rectangular tube 10, two of the hydraulic cylinders 802 are started first, driving the two first main chucks 603 to clamp the outer wall of the tube 10 first, and then the other two hydraulic cylinders 802 are started to drive the two second main chucks 604 to further clamp the tube 10. The clamping force provided by multiple hydraulic cylinders 802 greatly improves the stability of the clamping of the tube 10.

[0032] like Figure 1-Figure 6As shown, a limiting mechanism 9 is installed at the inner center of the chuck housing 2, and a pipe 10 is arranged at the center of the chuck assembly 6. The limiting mechanism 9 includes a fixing sleeve 901 fixedly connected to the front end center of the chuck housing 2, and a second gear ring 902 is rotatably connected to the outer wall center of the fixing sleeve 901, and a third gear ring 903 is rotatably connected to the outer wall front end of the fixing sleeve 901. A plurality of first connecting seats 904 and a plurality of second connecting seats 905 are respectively fixedly connected to the outer wall rear end of the fixing sleeve 901, and a main gear 906 and a limiting gear 907 are rotatably connected to the plurality of first connecting seats 904, and a plurality of main gears 906 are located at the front end positions of the corresponding limiting gears 907, and a plurality of second connecting seats 905 are rotatably connected to the plurality of secondary gears 908. When the circular or square pipe 10 is clamped, two of the second gears 803 rotate, driving the meshing limiting gears 907 to rotate, thereby driving the adjacent main gears 906 to rotate, and then driving the toothed plate 602 meshing with the main gear 906 to move, so as to realize the two The first main chuck 603 clamps the pipe 10, and when the other second gear 803 rotates, the two second main chucks 604 are driven to further clamp the pipe 10. When the multiple tooth plates 602 move, they mesh with the corresponding sub-gear 908 to improve the stability of the tooth plates 602 when moving, thereby improving the stability of clamping the pipe 10. The multiple limit gears 907 are respectively meshed with the second gear ring 902 and the third gear ring 903, and the multiple tooth plates 602 are respectively meshed with the corresponding main gear 906 and the sub-gear 908. The gear 908 is meshed, and the multiple second gears 803 are meshed with the corresponding limit gears 907. When two of the limit gears 907 rotate, they drive the meshed second gear ring 902 to rotate. At the same time, the rotation of the other two limit gears 907 drives the meshed third gear ring 903 to rotate, ensuring the synchronization of the corresponding two main gears 906, and then ensuring the synchronization of the two first main chucks 603 and the two second main chucks 604, greatly improving the clamping accuracy of the pipe 10.

[0033] The working principle of this embodiment is as follows: when clamping the round or square pipe 10, first, multiple hydraulic cylinders 802 are all started, and the connected second gears 803 are pushed by the corresponding pistons, and the multiple second gears 803 rotate, driving the meshing limit gears 907 to rotate, thereby driving the adjacent main gear 906 to rotate, and then driving the toothed plate 602 meshing with the main gear 906 to move toward each other, and the movement of the multiple toothed plates 602 drives the two connected first main chucks 603 and the two second main chucks 604 to move toward each other, so as to quickly clamp and fix the outer wall of the round or square pipe 10; When clamping an elliptical or rectangular tube 10, firstly start two of the hydraulic cylinders 802, and push the connected second gear 803 through the corresponding pistons, wherein the two second gears 803 rotate, driving the meshing limit gear 907 to rotate, thereby driving the adjacent main gear 906 to rotate, and then driving the toothed plate 602 meshing with the main gear 906 to move toward each other, wherein the movement of the two toothed plates 602 drives the two connected first main chucks 603 to clamp and position the outer wall of the tube 10, and then start the other two hydraulic cylinders 802, and the same principle drives the other two toothed plates 602 to move, and drives the connected second main chuck 604 to further clamp and fix the outer wall of the tube 10; When two of the limiting gears 907 rotate, they drive the meshing second gear ring 902 to rotate. At the same time, the rotation of the other two limiting gears 907 drives the meshing third gear ring 903 to rotate, ensuring the synchronization of the two corresponding main gears 906, and further ensuring the synchronization of the two first main chucks 603 and the two second main chucks 604. When the two first main chucks 603 and the two second main chucks 604 are both clamped on the outer wall of the pipe 10, the two first auxiliary chucks 6031 and the second auxiliary chucks 6041 are both clamped on the outer wall of the pipe 10, so as to clamp the outer wall of the pipe 10 at multiple points. When the first auxiliary chucks 6031 and the second auxiliary chucks 6041 are damaged, the staff can remove the corresponding fixing bolts 606 to replace them. When the clamped pipe 10 is rotated, the drive motor 503 is started, and the drive motor 503 drives the first gear 504 to rotate through the output shaft, so that the first gear 504 drives the first gear ring 502 to rotate, and the first gear ring 502 drives the chuck housing 2 to rotate, and then drives the entire pipe cutting chuck to rotate, so that the pipe 10 can be rotated during cutting, which is convenient for processing at different angles.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A laser tube cutting chuck, comprising a support mechanism (1), characterized in that: A chuck housing (2) is provided at the inner center of the support mechanism (1), and a sealing cover (3) is fixedly mounted at the front end of the chuck housing (2); The sealing cover (3) is provided with a plurality of limiting holes (4), a rotating mechanism (5) is installed on the outer side of the chuck housing (2), and a chuck assembly (6) is installed at the front end center of the sealing cover (3); A plurality of limit seats (7) are fixedly connected to the rear end of the sealing cover (3), a driving mechanism (8) is installed at the rear end of the sealing cover (3), a limit mechanism (9) is installed at the inner center of the chuck housing (2), and a pipe (10) is provided at the center of the chuck assembly (6).

2. A laser tube cutting chuck according to claim 1, characterized in that: The support mechanism (1) comprises a support seat (101), the top centre of the support seat (101) is fixedly connected to a sleeve shell (102), and the inner wall of the sleeve shell (102) is provided with a limiting sliding groove (103).

3. A laser tube cutting chuck according to claim 2, characterized in that: The rotating mechanism (5) comprises a limiting ring (501) fixedly connected to the rear end of the outer wall of the chuck housing (2); the front end of the outer wall of the chuck housing (2) is fixedly connected to a first gear ring (502); a driving motor (503) is fixedly mounted on the support seat (101); the outer wall of the output shaft of the driving motor (503) is fixedly connected to a first gear (504); and the first gear (504) meshes with the first gear ring (502).

4. A laser tube cutting chuck according to claim 3, characterized in that: The limiting ring (501) is slidably connected to the limiting sliding groove (103), and the first gear ring (502) is located inside the sleeve (102).

5. The laser tube cutting chuck according to claim 1, characterized in that: The chuck assembly (6) comprises a plurality of slide seats (601), the plurality of slide seats (601) being slidably connected to corresponding limiting holes (4), the rear ends of the plurality of slide seats (601) being fixedly connected to toothed plates (602), and the front ends of the plurality of slide seats (601) being fixedly connected to two first main chucks (603) and two second main chucks (604).

6. A laser tube cutting chuck according to claim 5, characterized in that: The front ends of the two first main chucks (603) are each provided with a first auxiliary chuck (6031), the front ends of the two second main chucks (604) are each provided with a second auxiliary chuck (6041), the front ends of the two first main chucks (603), the two first auxiliary chucks (6031), the two second main chucks (604) and the two second auxiliary chucks (6041) are each provided with a plurality of mounting holes (605), and a plurality of fixing bolts (606) are respectively installed between the two first main chucks (603) and the corresponding first auxiliary chucks (6031) and between the two second main chucks (604) and the corresponding second auxiliary chucks (6041).

7. The laser tube cutting chuck according to claim 5, characterized in that: The plurality of sliding seats (601) are respectively slidably connected to corresponding limiting seats (7).

8. The laser tube cutting chuck according to claim 5, characterized in that: The driving mechanism (8) comprises a plurality of mounting seats (801) fixedly connected to the rear end of the sealing cover (3), the plurality of mounting seats (801) being rotatably connected to a hydraulic cylinder (802), the rear end of the sealing cover (3) being rotatably connected to a plurality of second gears (803), and one end of the piston of the plurality of hydraulic cylinders (802) being rotatably connected to the corresponding second gear (803).

9. A laser tube cutting chuck according to claim 8, characterized in that: The limiting mechanism (9) comprises a fixing sleeve (901) fixedly connected to the front end center of the chuck housing (2); the center of the outer wall of the fixing sleeve (901) is rotatably connected to a second gear ring (902); the front end of the outer wall of the fixing sleeve (901) is rotatably connected to a third gear ring (903); the rear end of the outer wall of the fixing sleeve (901) is respectively fixedly connected to a plurality of first connecting seats (904) and a plurality of second connecting seats (905); the plurality of first connecting seats (904) are rotatably connected to a main gear (906) and a limiting gear (907); the plurality of main gears (906) are located at the front end positions of corresponding limiting gears (907); and the plurality of second connecting seats (905) are rotatably connected to a sub-gear (908).

10. A laser tube cutting chuck according to claim 9, characterized in that: The plurality of limit gears (907) are respectively meshed with the second gear ring (902) and the third gear ring (903); the plurality of tooth plates (602) are respectively meshed with the corresponding main gear (906) and sub gear (908); and the plurality of the second gears (803) are meshed with the corresponding limit gears (907).

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