A chuck for laser cutting of metal pipes

Abstract

The present invention discloses a chuck for laser cutting of metal pipes, belonging to the technical field of laser cutting. The chuck for laser cutting of metal pipes includes a chuck bracket. A main support body is installed inside the rotary bearing. A rotary drive mechanism for driving the main support body to rotate is installed on the chuck bracket. An installation body is fixedly installed on the outer side of the main support body. A plurality of groups of self-adaptive clamping mechanisms for clamping metal pipes are installed on the periphery of the installation body. A plurality of groups of support and guiding mechanisms for supporting metal pipes are installed on the periphery of the inner wall of the main support body. By designing the self-adaptive clamping mechanism and through the mutual cooperation of multiple groups of main and auxiliary wheels, the present invention can better adapt to the processing of the tail materials of metal pipes. Even if the tail materials of the metal pipes are short, very stable clamping can be achieved, and deflection or movement during the processing can be prevented, thereby reducing the waste of tail materials and improving economic benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser cutting, and particularly relates to a chuck for laser cutting of metal pipes. Background Art

[0002] Laser cutting of metal pipes is a processing method that uses laser technology to precisely cut metal pipes. Laser cutting irradiates the metal surface with a high-power laser beam, heating the metal to a molten or vaporized state at high temperature, and then blowing away the molten metal in the cutting area through an air flow to achieve the cutting of the metal pipe. The advantages of laser cutting of metal pipes include: high precision: Laser cutting can achieve very fine cutting, suitable for cutting complex shapes and small sizes. High speed: Laser cutting is usually faster than traditional cutting methods (such as plasma cutting, mechanical cutting). Non-contact cutting: Laser cutting does not require direct contact with the metal surface, reducing the risk of mechanical wear and tool damage. Strong adaptability: Laser cutting can cut a variety of different types of metals, such as stainless steel, carbon steel, aluminum, copper, etc., and is applicable to metal pipes of different thicknesses. Good cutting quality: The cut is flat, the heat-affected zone is small, the cutting edge is smooth, reducing the need for subsequent processing.

[0003] Laser cutting of metal pipes is widely used in fields such as aerospace, automotive manufacturing, precision instruments, and the construction industry, and is particularly outstanding in cutting tasks that require high precision and complex shapes. During the laser cutting process of metal pipes, in order to ensure that the pipe remains stable during cutting and can be accurately positioned, a special chuck is generally required to clamp and fix the metal pipe during cutting to prevent the pipe from shifting or deforming during cutting. Currently, there are various types of fixed chucks on the market, but most of the existing fixed chuck structures are relatively complex in design and are generally pneumatic clamping structures. Although they can complete the clamping operation, since the metal pipe often needs to rotate 360 degrees or even a larger angle (cutting spiral holes) during the welding process, its pneumatic pipeline is not only inconvenient to layout but also prone to entanglement, which will affect the normal operation of the equipment; at the same time, most of the existing chucks currently have certain inconveniences in clamping and processing the tail material. Especially when the tail material is too short, on the one hand, it is difficult to clamp, and at the same time, the metal pipe is prone to deflection and displacement, which will affect the processing accuracy and is also likely to cause waste of surplus materials. Summary of the Invention

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

[0005] The technical solution adopted to solve the above technical problems is as follows: A chuck for laser cutting of metal pipes, including a chuck support, a rotary bearing is installed on the chuck support, a main support body is installed inside the rotary bearing, and a rotary drive mechanism for driving the main support body to rotate is installed on the chuck support;

[0006] An installation body is fixedly installed on the outer side of the main support body, and a plurality of groups of adaptive clamping mechanisms for clamping metal pipes are installed on the circumferential side of the installation body;

[0007] A anti-jamming guiding steel leaf spring for guiding the metal pipe to pass through the adaptive clamping mechanism normally is installed inside each group of adaptive clamping mechanisms. Since the adaptive clamping mechanism adopts a double-wheel clamping structure design and belongs to an elastic adaptive clamping method, the front clamping wheels of multiple groups of adaptive clamping mechanisms are in an inwardly retracted state under normal conditions. Therefore, when the metal pipe penetrates the chuck from the rear end forward, the front end of the metal pipe will conflict with and get stuck by the secondary wheel structures of multiple groups of adaptive clamping mechanisms. By designing the anti-jamming guiding steel leaf spring, when the metal pipe penetrates the chuck from the rear end forward, the front end of the metal pipe will slide along the surface of the anti-jamming guiding steel leaf spring and smoothly cross multiple secondary wheel structures following the curved surface guiding structure of the anti-jamming guiding steel leaf spring, thus ensuring the smoothness and stability of the metal pipe at the initial feeding stage;

[0008] A plurality of groups of support guiding mechanisms for supporting the metal pipe are installed on the circumferential side of the inner wall of the main support body.

[0009] Further, the main support body includes a lining body installed inside the rotary bearing, two positioning card slots are opened on the outer side of the front end of the lining body, and a chamfer is provided at the center of the rear end of the lining body.

[0010] Through the above technical solution, since the lining body is installed inside the rotary bearing, the lining body can rotate freely on the chuck support, and then can drive the installation body and the adaptive clamping mechanism to rotate. The chamfer provided at the center of the rear end of the lining body enables the metal pipe to penetrate into the middle of the lining body more conveniently and extend forward.

[0011] Further, the rotary drive mechanism includes a synchronous gear fixedly installed on the outer side of the main support body, a servo motor is installed on the chuck support, and a drive gear meshing with the synchronous gear is fixedly installed at the output end of the servo motor.

[0012] Through the above technical solution, the rotary drive mechanism is mainly used to drive the rotation of the main body part. During operation, the output end of the servo motor can drive the synchronous gear meshing with it to rotate through the drive gear. Since the synchronous gear is fixed on the main support body, the main support body can rotate synchronously with the synchronous gear. Driven by the servo motor, the main support body can rotate at any angle.

[0013] Further, the installation body includes a main mounting frame sleeved outside the inner lining body. Two positioning blocks are arranged inside the front end of the main mounting frame. A plurality of first rotating supports are arranged on the circumferential side of the front end of the main mounting frame. A plurality of second rotating supports are arranged on the circumferential side of the outer wall of the main mounting frame. A plurality of mounting holes are also formed on the circumferential side of the outer wall of the main mounting frame.

[0014] Through the above technical solution, as a support structure, the installation body can provide support and installation fulcrums for multiple groups of adaptive clamping mechanisms. And since the main mounting frame is sleeved outside the inner lining body, the assembly and disassembly of the entire installation body are very convenient, so that it is more convenient to quickly repair or replace the module as a whole in case of equipment failure to ensure the normal operation of the equipment.

[0015] Further, the two positioning blocks are respectively clamped in the corresponding positioning slots, and the main mounting frame is fixed to the inner lining body through a plurality of fixing bolts.

[0016] Through the above technical solution, on the one hand, rapid installation and positioning can be achieved, and at the same time, stable connection and fixation can be realized through multiple groups of fixing bolts later, making the overall installation and disassembly very convenient and fast.

[0017] Further, the adaptive clamping mechanism includes a rotating bracket. A rotating support is arranged in the middle of the inner side of the rotating bracket. The rear end of the rotating bracket is slidably connected with a guide rod. One end of the guide rod is fixedly connected with a first rotating bracket. A first clamping spring is sleeved on the outer wall of the guide rod. The front end of the rotating bracket is rotatably connected with a main clamping wheel. A through limiting through hole is formed at a position near the front end of the rotating bracket. A limiting rod is slidably connected in the limiting through hole. One end of the limiting rod is fixedly connected with a second rotating bracket. A secondary clamping wheel is rotatably connected to the second rotating bracket. A second clamping spring is sleeved on the outer wall of the limiting rod. One end of the limiting rod far from the second rotating bracket is fixedly connected with a threaded rod. A regulating nut is threadedly connected to the outer wall of the threaded rod.

[0018] Through the above technical solution, the adaptive clamping mechanism, as an important part of the chuck, is mainly used for clamping, positioning and fixing metal pipes. During specific operation, the pushing device of the laser cutting machine pushes the metal pipe into the chuck for clamping and fixing. When the metal pipe penetrates the chuck from the rear end to the front end, the front end of the metal pipe will slide along the surface of the anti - jamming guiding steel leaf spring and smoothly cross multiple auxiliary clamping wheels following the curved surface guiding structure of the anti - jamming guiding steel leaf spring. During the continuous forward movement of the metal pipe, the main clamping wheel will come into contact with the metal pipe. During this process, the rotating bracket will rotate with the first rotating support as the fulcrum. Under the action of the lever principle, the rear end of the rotating bracket will squeeze the corresponding first clamping spring, and the first clamping spring, under its own elastic action, will react on the main clamping wheel, enabling the main clamping wheel to be in close contact with the metal pipe, thereby achieving the clamping of the metal pipe. At the same time, when the metal pipe passes through the auxiliary clamping wheels, the auxiliary clamping wheels will also drive the second rotating bracket to squeeze the second clamping spring sleeved on the outer wall of the limiting rod. Similarly, under the elastic reaction force of the second clamping spring, the auxiliary clamping wheels can be in close contact with the metal pipe, thereby achieving further clamping of the metal pipe. Through the mutual cooperation of multiple groups of main and auxiliary wheels, on the one hand, the stable clamping and fixing of the metal pipe can be realized. At the same time, this double - wheel structure design can also better adapt to the processing of the tail material of the metal pipe. Even if the tail material of the metal pipe is short, very stable clamping can be achieved, and it can be prevented from deflecting or moving during the processing, thereby reducing the waste of the tail material and improving the economic benefits.

[0019] Further, the rotating bracket is rotatably connected to the corresponding first rotating support, and the first rotating bracket is rotatably connected to the corresponding second rotating support.

[0020] Further, by designing the wheel - type clamping structure of the main clamping wheel and the auxiliary clamping wheel, on the one hand, the effective clamping and fixing of the metal pipe can be realized, and at the same time, it does not affect the feeding of the metal pipe.

[0021] Further, the materials and structures of the main clamping wheel and the auxiliary clamping wheel are specifically selected according to the properties of the processed metal pipe. To ensure the stability and reliability of clamping during the processing, their wheel surfaces can be designed into various structures with protrusions to increase the friction between the wheel surface and the metal pipe. Rubber or silica gel and other materials can also be installed on their wheel surfaces to make anti - slip wheel sleeves. This is mainly for some thin and light pipes. On the one hand, it can prevent slipping, and at the same time, it can prevent the pipes from deforming due to excessive extrusion force.

[0022] Further, the support and guiding mechanism includes a T - shaped installation groove opened at the rear end of the inner liner wall. A spring steel strip is arranged in the T - shaped installation groove. Limiting blocks are fixedly connected to both the front and rear ends of the spring steel strip. A fixed plug for restricting the spring steel strip is installed at the rear end of the T - shaped installation groove.

[0023] Through the above technical solution, the support and guiding mechanism is mainly used for the auxiliary support of metal pipes, and its multi-group structural design with annular distribution can achieve the central calibration of metal pipes during the feeding process, so that the central axis of the metal pipe and the central axis of the inner liner are on the same straight line, thereby ensuring the smoothness of the metal pipe during the feeding process. Further, a spring steel strip with a convex structure in the middle is designed, so that the spring steel strip has better elastic deformation ability and better adaptability, so as to be able to better adapt to pipes with different diameters and provide a stable support structure.

[0024] Further, the limiting blocks at both ends of the spring steel strip are slidably limited in the T-shaped installation groove, and the fixed plug is fixed to the inner liner by fixing screws.

[0025] Through the above technical solution, on the one hand, the rapid assembly and fixation of the spring steel strip can be realized, and at the same time, the subsequent maintenance is also facilitated.

[0026] Further, a protective cover is fixedly installed at the front end of the chuck bracket. By designing the protective cover.

[0027] Through the above technical solution, on the one hand, the overall aesthetics of the chuck can be improved, and at the same time, a large amount of metal chip jets generated during the laser cutting process can be reduced from entering the inside of the chuck, so that a better protection function can be realized for the internal structure of the chuck.

[0028] The beneficial effects of the present invention are as follows: (1) By designing an adaptive clamping mechanism and through the mutual cooperation of multiple groups of main and auxiliary wheels, on the one hand, stable clamping and fixation of metal pipes can be achieved. At the same time, this double-wheel structure design can also better adapt to the processing of metal pipe tailings. Even if the tailings of metal pipes are short, very stable clamping can be achieved, and it can prevent deflection or movement during the processing, thereby reducing the waste of tailings and improving economic benefits; (2) By designing a simple adaptive clamping mechanism and cooperating with a rotary drive mechanism, the metal pipe can be driven to rotate at any angle, which not only ensures the stability of processing but also can adapt to a wider range of processing requirements; (3) By designing an anti-clamping guiding steel leaf spring, when the metal pipe penetrates the chuck from the rear end forward, the front end of the metal pipe will slide along the surface of the anti-clamping guiding steel leaf spring and smoothly cross multiple auxiliary wheel structures following the curved surface guiding structure of the anti-clamping guiding steel leaf spring, thus ensuring the smoothness and stability of the metal pipe during the initial feeding stage; (4) By designing multiple groups of support and guiding mechanisms distributed in a ring shape, the center calibration of the metal pipe during the feeding process can be achieved, so that the central axis of the metal pipe and the central axis of the inner lining body are on the same straight line, thereby ensuring the smoothness of the metal pipe during the feeding process. At the same time, the spring steel strip has better elastic deformation ability and better self-adaptive ability, so as to be able to better adapt to pipes of different diameters and provide a stable support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the first perspective structure diagram of the present invention;

[0030] Figure 2 is the second perspective structure diagram of the present invention;

[0031] Figure 3 is the front view of the present invention;

[0032] Figure 4 is Figure 3 the three-dimensional sectional view in the A-A direction in

[0033] Figure 5 is the three-dimensional structure diagram of the main body of the present invention;

[0034] Figure 6 is the right view of the main body structure of the present invention;

[0035] Figure 7 is the structural schematic diagram of the clamping state of the metal pipe tailings of the present invention;

[0036] Figure 8 is Figure 7 the partial enlarged view at A in

[0037] Figure 9 is the structural schematic diagram of the installation body of the present invention;

[0038] Figure 10 It is a schematic installation structure diagram of the adaptive clamping mechanism of the present invention;

[0039] Figure 11 It is a schematic installation structure diagram of the support and guiding mechanism of the present invention;

[0040] Figure 12 It is a schematic structure diagram of the adaptive clamping mechanism of the present invention;

[0041] Figure 13 is Figure 12 a partial enlarged view at position B in

[0042] Figure 14 It is a schematic structure diagram of the spring steel strip of the present invention.

[0043] Reference numerals: 1, chuck bracket; 2, rotary bearing; 3, main support body; 301, inner liner; 302, positioning groove; 303, chamfer; 4, rotary drive mechanism; 401, synchronous gear; 402, servo motor; 403, drive gear; 5, mounting body; 501, main mounting frame; 502, positioning block; 503, first rotating support; 504, second rotating support; 505, mounting hole; 506, fixing bolt; 6, adaptive clamping mechanism; 601, rotary bracket; 602, rotating bracket; 603, guide rod; 604, first rotary bracket; 605, first clamping spring; 606, main clamping wheel; 607, limit through hole; 608, limit rod; 609, second rotary bracket; 610, auxiliary clamping wheel; 611, second clamping spring; 612, threaded rod; 613, adjusting nut; 7, support and guiding mechanism; 701, T-shaped mounting groove; 702, spring steel strip; 703, limit block; 704, fixed plug; 8, protective cover; 9, anti-jamming guiding steel leaf spring; 10, metal pipe. Detailed implementation manners

[0044] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to 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 used to limit the present invention.

[0045] As Figures 1 - 14As shown in the figure, a chuck for laser cutting of metal pipes in this embodiment includes a chuck bracket 1, a rotary bearing 2 is installed on the chuck bracket 1, and a main support body 3 is installed inside the rotary bearing 2. The main support body 3 includes a lining body 301 installed inside the rotary bearing 2. Two positioning slots 302 are provided on the outer side of the front end of the lining body 301, and a chamfer 303 is provided at the center of the rear end of the lining body 301. Since the lining body 301 is installed inside the rotary bearing 2, the lining body 301 can rotate freely on the chuck bracket 1, and thus can drive the installation body 5 and the adaptive clamping mechanism 6 to rotate. The chamfer 303 provided at the center of the rear end of the lining body 301 enables the metal pipe 10 to penetrate more conveniently into the middle of the lining body 301 and extend forward.

[0046] Regarding the rotary drive mechanism 4, refer to Figures 1 - 7 , a rotary drive mechanism 4 for driving the main support body 3 to rotate is installed on the chuck bracket 1; the rotary drive mechanism 4 includes a synchronous gear 401 fixedly installed on the outer side of the main support body 3, a servo motor 402 is installed on the chuck bracket 1, and a drive gear 403 meshing with the synchronous gear 401 is fixedly installed at the output end of the servo motor 402. The rotary drive mechanism 4 is mainly used to drive the rotation of the main body part. During operation, the output end of the servo motor 402 can drive the synchronous gear 401 meshing with it to rotate through the drive gear 403. Since the synchronous gear 401 is fixed on the main support body 3, the main support body 3 can rotate synchronously with the synchronous gear 401. Driven by the servo motor 402, the main support body 3 can rotate at any angle.

[0047] Regarding the installation body 5, refer to Figures 1 - 10 , an installation body 5 is fixedly installed on the outer side of the main support body 3. The installation body 5 includes a main installation frame 501 sleeved on the outer side of the lining body 301. Two positioning blocks 502 are provided on the inner side of the front end of the main installation frame 501. A plurality of first rotating supports 503 are provided on the peripheral side of the front end of the main installation frame 501, and a plurality of second rotating supports 504 are provided on the peripheral side of the outer wall of the main installation frame 501. A plurality of installation holes 505 are also provided on the peripheral side of the outer wall of the main installation frame 501. The installation body 5 serves as a support structure, which can provide support and installation fulcrums for multiple groups of adaptive clamping mechanisms 6. And since the main installation frame 501 is sleeved on the outer side of the lining body 301, the assembly and disassembly of the entire installation body 5 are very convenient, so that it is more convenient to perform quick maintenance or overall replacement of the module in case of equipment failure to ensure the normal operation of the equipment.

[0048] Further in this embodiment, the two positioning blocks 502 are respectively engaged in the corresponding positioning slots 302, and the main mounting bracket 501 is fixed to the inner lining 301 through a plurality of fixing bolts 506. On the one hand, it can achieve quick installation and positioning, and at the same time, stable connection and fixation can be realized through multiple groups of fixing bolts 506 later, making the overall installation and disassembly very convenient and fast.

[0049] Regarding the adaptive clamping mechanism 6, refer to Figures 1 - 13, multiple groups of adaptive clamping mechanisms 6 for clamping the metal pipe 10 are installed on the circumferential side of the installation body 5; the adaptive clamping mechanism 6 includes a rotating bracket 601, a rotating bracket 602 is arranged in the middle of the inner side of the rotating bracket 601, the rear end of the rotating bracket 601 is slidably connected with a guide rod 603, one end of the guide rod 603 is fixedly connected with a first rotating bracket 604, a first clamping spring 605 is sleeved on the outer wall of the guide rod 603, the front end of the rotating bracket 601 is rotatably connected with a main clamping wheel 606, a through limiting through hole 607 is opened at a position near the front end of the rotating bracket 601, a limiting rod 608 is slidably connected in the limiting through hole 607, one end of the limiting rod 608 is fixedly connected with a second rotating bracket 609, a secondary clamping wheel 610 is rotatably connected to the second rotating bracket 609, a second clamping spring 611 is sleeved on the outer wall of the limiting rod 608, one end of the limiting rod 608 away from the second rotating bracket 609 is fixedly connected with a threaded rod 612, and an adjusting nut 613 is threadedly connected to the outer wall of the threaded rod 612. As an important part of the chuck, the adaptive clamping mechanism 6 is mainly used for clamping, positioning and fixing the metal pipe 10. Specifically, during operation, the pushing device of the laser cutting machine pushes the metal pipe 10 into the chuck for clamping and fixing. When the metal pipe 10 penetrates through the chuck from the rear end to the front end, the front end of the metal pipe 10 will slide along the surface of the anti-clamping guiding steel leaf spring 9 and smoothly cross multiple secondary clamping wheels 610 following the curved guiding structure of the anti-clamping guiding steel leaf spring 9. During the continuous forward movement of the metal pipe 10, the main clamping wheel 606 will come into contact with the metal pipe 10. During this process, the rotating bracket 601 will rotate with the first rotating support 503 as the fulcrum. Under the action of the lever principle, the rear end of the rotating bracket 601 will squeeze the corresponding first clamping spring 605, and under the elastic action of the first clamping spring 605 itself, it will react on the main clamping wheel 606, so that the main clamping wheel 606 can be in close contact with the metal pipe 10, thereby realizing the clamping of the metal pipe 10; at the same time, when the metal pipe 10 passes through the secondary clamping wheel 610, the secondary clamping wheel 610 will also drive the second rotating bracket 609 to squeeze the second clamping spring 611 sleeved on the outer wall of the limiting rod 608. Similarly, under the elastic reaction force of the second clamping spring 611, the secondary clamping wheel 610 can be in close contact with the metal pipe 10, thereby realizing the further clamping of the metal pipe 10. Through the mutual cooperation of multiple groups of main and secondary wheels, on the one hand, the stable clamping and fixing of the metal pipe 10 can be realized, and at the same time, this double-wheel structure design can also better adapt to the processing of the tail material of the metal pipe 10. Even if the tail material of the metal pipe 10 is short, very stable clamping can be realized, and it can be prevented from deflecting or moving during the processing, thereby reducing the waste of the tail material and improving the economic benefits.

[0050] In this embodiment, the rotating bracket 602 is rotatably connected to the corresponding first rotating support 503 , and the first rotating bracket 604 is rotatably connected to the corresponding second rotating support 504 .

[0051] This embodiment further designs a wheel-type clamping structure including a main clamping wheel 606 and an auxiliary clamping wheel 610 , which can achieve effective clamping and fixing of the metal pipe 10 while not affecting the moving feeding of the metal pipe 10 .

[0052] Furthermore, in this embodiment, the materials and structures of the main clamping wheel 606 and the auxiliary clamping wheel 610 are specifically selected according to the properties of the metal pipe 10 to be processed. In order to ensure the stability and reliability of clamping during the processing, the wheel surface can be designed to have various structures with protrusions to increase the friction between the wheel surface and the metal pipe 10, and the wheel surface can also be equipped with anti-slip wheel covers made of materials such as rubber or silicone. This is mainly aimed at some thin pipes. On the one hand, it can prevent slipping, and on the other hand, it can prevent deformation of the pipe due to excessive extrusion pressure.

[0053] Furthermore, in this embodiment, a protrusion structure (not shown in the figure) is provided in the limiting through hole 607 for limiting the deflection of the limiting rod 608, and at the same time, the outer wall of the limiting rod 608 is also provided with a groove structure (not shown in the figure) that matches the protrusion structure, so that the limiting rod 608 can only slide in a straight line, thereby effectively preventing the auxiliary clamping wheel 610 from angular deflection during the processing.

[0054] For the anti-jamming guide steel leaf spring 9, refer to Figure 8 and Figure 13 , an anti-stuck guiding steel leaf spring 9 for guiding the metal pipe 10 to pass through the adaptive clamping mechanism 6 normally is installed on the inner side of each group of adaptive clamping mechanisms 6. Since the adaptive clamping mechanism 6 adopts a double-wheel clamping structure design and it belongs to an elastic adaptive clamping method, the front end clamping wheels of multiple groups of adaptive clamping mechanisms 6 are all in an inward state in a normal state. Therefore, when the metal pipe 10 passes through the chuck from the rear end to the front, the front end of the metal pipe 10 will cause conflict and jam with the secondary wheel structure of the multiple groups of adaptive clamping mechanisms 6. By designing the anti-stuck guiding steel leaf spring 9, when the metal pipe 10 passes through the chuck from the rear end to the front, the front end of the metal pipe 10 will slide along the surface of the anti-stuck guiding steel leaf spring 9, and smoothly pass over multiple secondary wheel structures following the curved surface guiding structure of the anti-stuck guiding steel leaf spring 9, thereby ensuring the fluency and stability of the metal pipe 10 in the initial feeding stage;

[0055] Regarding the support guide mechanism 7, refer to Figure 11 and Figure 14, A plurality of support and guiding mechanisms 7 for supporting the metal pipe 10 are installed on the circumferential side of the inner wall of the main support body 3; the support and guiding mechanism 7 includes a T-shaped installation groove 701 opened at the rear end of the inner wall of the inner lining body 301. A spring steel strip 702 is provided in the T-shaped installation groove 701. Limit blocks 703 are fixedly connected to both the front and rear ends of the spring steel strip 702. A fixing plug 704 for restricting the spring steel strip 702 is installed at the rear end of the T-shaped installation groove 701. The support and guiding mechanism 7 is mainly used for the auxiliary support of the metal pipe 10, and its multi-group structure design in a circular distribution can achieve the center calibration of the metal pipe 10 during the feeding process, so that the central axis of the metal pipe 10 and the central axis of the inner lining body 301 are on the same straight line, thereby ensuring the smoothness of the metal pipe 10 during the feeding process. Further, a spring steel strip 702 with a convex structure in the middle is designed, so that the spring steel strip 702 has better elastic deformation ability and better self-adaptive ability, so as to be able to better adapt to pipes of different diameters and provide a stable support structure.

[0056] In this embodiment, further, the limit blocks 703 at both ends of the spring steel strip 702 are slidably limited in the T-shaped installation groove 701, and the fixing plug 704 is fixed to the inner lining body 301 by fixing screws. On the one hand, the rapid assembly and fixation of the spring steel strip 702 can be realized, and at the same time, subsequent maintenance is also facilitated.

[0057] In this embodiment, further, a protective cover 8 is fixedly installed at the front end of the chuck support 1. By designing the protective cover 8, on the one hand, the overall beauty of the chuck can be improved, and at the same time, a large amount of metal waste chip jets generated during the laser cutting process can be reduced from entering the inside of the chuck, so that a better protection function for the internal structure of the chuck can be realized.

[0058] The working principle of the embodiment is as follows. Specifically, during work, the metal pipe 10 is pushed by the pushing device of the laser cutting machine into the chuck for clamping and fixing. When the metal pipe 10 penetrates through the chuck from the rear end to the front, it will first pass through a plurality of support and guiding mechanisms 7. The multi-group support and guiding mechanisms 7 distributed in a circular shape can achieve the center calibration of the metal pipe 10 during the feeding process, so that the central axis of the metal pipe 10 and the central axis of the inner lining body 301 are on the same straight line, thereby ensuring the smoothness of the metal pipe 10 during the feeding process;

[0059] The metal pipe 10 moves further forward. At this time, the front end of the metal pipe 10 will slide along the surface of the anti-jamming guiding steel leaf spring 9 and smoothly cross over a plurality of sub-clamping wheels 610 following the curved surface guiding structure of the anti-jamming guiding steel leaf spring 9. During the process of the metal pipe 10 continuing to move forward, it will come into contact with the main clamping wheel 606. During this process, the rotating bracket 601 will rotate with the first rotating support 503 as the fulcrum. Under the action of the lever principle, the rear end of the rotating bracket 601 will squeeze the corresponding first clamping spring 605, and the first clamping spring 605, under its own elastic action, will react on the main clamping wheel 606, so that the main clamping wheel 606 and the sub-clamping wheels 610 can be in close contact with the metal pipe 10, thereby realizing the clamping of the metal pipe 10;

[0060] During the subsequent processing, the output end of the servo motor 402 can drive the synchronous gear 401 meshing with it to rotate through the driving gear 403, so that the main support body 3 can rotate synchronously with the synchronous gear 401, and can drive the clamped metal pipe 10 to rotate and cut at any angle.

[0061] The above 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 chuck for laser cutting of metal pipes, comprising a chuck bracket (1), and a rotary bearing (2) is installed on the chuck bracket (1), characterized in that: The main support body (3) is installed inside the rotary bearing (2). The main support body (3) includes a lining body (301) installed inside the rotary bearing (2). A rotary drive mechanism (4) for driving the main support body (3) to rotate is installed on the chuck support (1). An installation body (5) is fixedly installed on the outer side of the main support body (3). The installation body (5) includes a main installation frame (501) sleeved on the outer side of the lining body (301). A plurality of first rotating supports (503) are arranged on the circumferential side of the front end of the main installation frame (501). A plurality of second rotating supports (504) are arranged on the circumferential side of the outer wall of the main installation frame (501). A plurality of groups of adaptive clamping mechanisms (6) for clamping the metal pipe (10) are installed on the circumferential side of the installation body (5). The adaptive clamping mechanism (6) includes a rotating support (601). A rotating support (602) is arranged in the middle of the inner side of the rotating support (601). A guide rod (603) is slidably connected to the rear end of the rotating support (601). One end of the guide rod (603) is fixedly connected to a first rotating support (604). A first clamping spring (605) is sleeved on the outer wall of the guide rod (603). The front end of the rotating support (601) is rotatably connected to a main clamping wheel (606). A through limiting through hole (607) is formed at a position near the front end of the rotating support (601). A limiting rod (608) is slidably connected in the limiting through hole (607). One end of the limiting rod (608) is fixedly connected to a second rotating support (609). A secondary clamping wheel (610) is rotatably connected to the second rotating support (609). A second clamping spring (611) is sleeved on the outer wall of the limiting rod (608). One end of the limiting rod (608) far from the second rotating support (609) is fixedly connected to a threaded rod (612). An adjusting nut (613) is threadedly connected to the outer wall of the threaded rod (612). The rotating support (602) is rotatably connected to the corresponding first rotating support (503). The first rotating support (604) is rotatably connected to the corresponding second rotating support (504). A anti - jamming guiding steel leaf spring (9) for guiding the metal pipe (10) to pass through the adaptive clamping mechanism (6) normally is installed inside each group of the adaptive clamping mechanisms (6). A plurality of groups of support guiding mechanisms (7) for supporting the metal pipe (10) are installed on the circumferential side of the inner wall of the main support body (3).

2. The chuck for laser cutting of metal pipes according to claim 1, characterized in that, Two positioning card slots (302) are formed on the outer side of the front end of the lining body (301). A chamfer (303) is arranged at the center of the rear end of the lining body (301).

3. The chuck for laser cutting of metal pipes according to claim 1, wherein, The rotary drive mechanism (4) includes a synchronous gear (401) fixedly installed on the outer side of the main support body (3). A servo motor (402) is installed on the chuck support (1). A drive gear (403) meshing with the synchronous gear (401) is fixedly installed at the output end of the servo motor (402).

4. The chuck for laser cutting of metal tubes according to claim 2, characterized in that, Two positioning blocks (502) are provided inside the front end of the main mounting bracket (501), and a plurality of mounting holes (505) are also formed on the circumferential side of the outer wall of the main mounting bracket (501).

5. The chuck for laser cutting of metal pipes according to claim 4, characterized in that, The two positioning blocks (502) are respectively engaged in corresponding positioning slots (302), and the main mounting bracket (501) is fixed to the inner lining body (301) by a plurality of fixing bolts (506).

6. The chuck for laser cutting of metal tubes according to claim 2, characterized in that, The support and guiding mechanism (7) includes a T-shaped mounting groove (701) formed at the rear end of the inner wall of the inner lining body (301). A spring steel strip (702) is provided in the T-shaped mounting groove (701). Limiting blocks (703) are fixedly connected to both the front and rear ends of the spring steel strip (702). A fixing plug (704) for restricting the spring steel strip (702) is installed at the rear end of the T-shaped mounting groove (701).

7. The chuck for laser cutting of metal tubes according to claim 6, characterized in that, The limiting blocks (703) at both ends of the spring steel strip (702) are slidably limited in the T-shaped mounting groove (701), and the fixing plug (704) is fixed to the inner lining body (301) by fixing screws.

8. The chuck for laser cutting of metal pipes according to claim 1, characterized in that, A protective cover (8) is fixedly installed at the front end of the chuck support (1).

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