Metal pipe cutting device capable of preventing deformation

Abstract

The present invention discloses a metal pipe cutting device capable of preventing deformation, belonging to the field of metal cutting technology, comprising a base, a deformation prevention component is arranged on one side of the top of the base, support frames are connected to both sides of the top of the base, and a fixed ring is connected between the two support frames, and a rotating cutting component is arranged on one side of the fixed ring. In the present invention, the sliding rod drives the moving block to move to one side through the moving wheel, thereby releasing the limit on the sliding plate, so that the sliding plate slowly shrinks to one side under the cooperation of the reset spring and the damper, avoiding the rotating disc knife from moving too fast to affect the cutting stability of the metal pipe, improving the cutting effect of the metal pipe, and at the same time, relatively reducing the contact depth between the rotating disc knife and the metal pipe, and increasing the distance between multiple rotating disc knives, avoiding the situation of knife collision, reducing the damage rate of the rotating disc knife, and improving the safety and fluency of the metal pipe cutting process.

Description

Technical Field

[0001] The invention belongs to the technical field of metal cutting, and in particular relates to a metal pipe cutting device capable of preventing deformation. Background Art

[0002] Metal pipe, also known as iron pipe, is a kind of electrical material. It is made of high-quality pipes. At present, in general metal pipe processing operations, in order to meet different requirements, it is necessary to cut according to the actual required length.

[0003] The invention patent of Chinese patent application publication number CN115555635B discloses a cutting device, which relates to the field of parts processing technology. The technical solution is that it includes a feeding unit and a base located on one side of the feeding unit, and a feeding unit, a clamping unit, and a cutting unit are respectively arranged on the base; the feeding unit separates the stacked rod-shaped materials into a single rod-shaped material and conveys it to the feeding unit in a translational manner; the feeding unit clamps the rod-shaped material and conveys it to the cutting unit; the clamping unit clamps the rod-shaped material to a position; and the cutting unit cuts the rod-shaped material delivered by the feeding unit. The beneficial effect of the present invention is that the device integrates the feeding, feeding, clamping, cutting, and chip removal functions in the cutting process of the rod-shaped material, and realizes the feeding of multiple rod-shaped materials one by one through the feeding unit. With the help of the feeding unit and the clamping unit, the material fixation during the cutting process is ensured, and the surface of the material will not be damaged. However, in the actual cutting process, if the cutting depth of the metal pipe is not properly grasped, it is easy for the rotating disc knife to collide with the knife, and there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that if the cutting depth of the metal pipe is not properly controlled, the rotating disc cutter is likely to collide with the cutter, and to propose a metal pipe cutting device that can prevent deformation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A metal pipe cutting device capable of preventing deformation comprises a base, an anti-deformation component is arranged on one side of the top of the base, support frames are connected to both sides of the top of the base, and a fixing ring is connected between the two support frames, a rotating cutting component is arranged on one side of the fixing ring, a plurality of connection boxes are arranged on the inner circumference of the rotating cutting component, and a rotating disc knife is connected to the bottom of the connection box through an anti-collision knife component;

[0007] The anti-collision knife assembly includes a moving rod, one end of the moving rod extends into the connecting box and is connected to a sliding plate, a return spring is arranged between the sliding plate and the inner wall of the connecting box, moving blocks are arranged on both sides of the sliding plate for limiting the sliding plate, a moving wheel is attached to the bottom of the moving block, a sliding rod is connected to the bottom of the moving wheel, a fixed block is connected to the bottom of the sliding rod, and a ball is arranged at the bottom end of the fixed block, the ball is triggered to release the limit of the sliding plate on the moving block, and the sliding plate drives the rotating disc knife to retract to avoid collision with the knife.

[0008] As a further description of the above technical solution:

[0009] The bottom of the moving block is arranged in an inclined surface, and sliding rods are connected to both sides of the inner wall of the connecting box. A sliding groove is provided on one side of the moving block, and the sliding rod is slidably connected in the sliding groove. A first spring is sleeved on the outer surface of the sliding rod, and the two ends of the first spring are respectively connected to one side of the moving block and one side of the inner wall of the connecting box. A limiting groove is provided on the side of the moving block away from the sliding rod, and the sliding plate and the limiting groove are clamped with each other.

[0010] As a further description of the above technical solution:

[0011] The two ends of the return spring are respectively connected to the bottom of the sliding plate and the top of the inner wall of the connection box, and the two return springs are distributed on both sides of the moving rod. The top of the sliding plate is connected to a damper, and the side of the damper away from the sliding plate is connected to the top of the inner wall of the connection box.

[0012] As a further description of the above technical solution:

[0013] The bottom of the moving rod is connected to a protective shell, the rotating disc knife is connected in the protective shell, and a driving source is installed on one side of the protective shell, and the output end of the driving source is transmission-connected to the rotating disc knife, and a plurality of clamping devices are fixedly connected to the inner circumference of the fixed ring.

[0014] As a further description of the above technical solution:

[0015] The rotary cutting assembly includes a rotating ring, which is rotatably connected to a fixed ring, a plurality of sliding columns are distributed in a circular array inside the rotating ring, the sliding column is slidably connected to the rotating ring, one end of the sliding column is connected to a connecting box, the end of the sliding column away from the connecting box is connected to a connecting block, a second spring is sleeved on the outer surface of the sliding column, the two ends of the second spring are respectively connected to one side of the connecting box and the other side of the connecting box, a travel block is connected to one side of the connecting block, a plurality of travel grooves are opened in a circular array on one side of the rotating ring, and the travel block is slidably connected in the travel groove.

[0016] As a further description of the above technical solution:

[0017] One end of the travel block extends to the other side of the rotating ring through the travel groove and is rotatably connected to an extrusion wheel. A plurality of extrusion blocks are distributed in a circular array on the inner circumference of the fixed ring. The cross-section of the extrusion block is fan-shaped. The extrusion wheel periodically fits with the extrusion block during rotation.

[0018] As a further description of the above technical solution:

[0019] A driving motor is fixedly mounted on the top of the fixed ring through a mounting plate, one end of the output shaft of the driving motor is connected to a transmission gear, the outer surface of the rotating ring is connected to a fixed gear ring, and the transmission gear is meshed with the fixed gear ring.

[0020] As a further description of the above technical solution:

[0021] The anti-deformation component includes a fixed cylinder, a rotating rod is rotatably connected to the fixed cylinder via a bearing, the outer surface of the rotating rod is connected to two toothed discs, one side of the toothed disc is meshed with multiple linkage gears, one side of the linkage gear is connected to a movable screw, the movable screw is rotatably connected to the fixed cylinder, and one end of the movable screw away from the linkage gear extends to the outside of the fixed cylinder, the outer surface of the movable screw is threadedly connected to a screw seat, and an outer support plate is connected between the two screw seats located in the same plane.

[0022] As a further description of the above technical solution:

[0023] One end of the rotating rod extends to the outside of the fixed cylinder and is connected to a knob. One side of the fixed cylinder is connected to a plurality of clamping blocks. One side of the knob is provided with a clamping slot, and the clamping block is clamped with the clamping slot.

[0024] As a further description of the above technical solution:

[0025] The top of the base is connected with a mounting frame, and the fixing tube is embedded in the mounting frame.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, by setting an anti-collision knife assembly, when the rotating disc knife cuts the metal pipe, the rotating disc knife rotates and cuts the metal pipe under the drive of the rotating cutting assembly, and in this process, the cutting depth of the rotating disc knife periodically deepens. When the ball contacts the outer surface of the metal pipe, it means that the safety distance between the rotating disc knife and other rotating disc knives or the surface of the metal pipe has reached the threshold value. At this time, the ball and the fixed block are triggered by themselves under the thrust of the metal pipe surface, thereby driving the sliding rod to move. The sliding rod drives the moving block to move to one side through the moving wheel, thereby releasing the limit on the sliding plate, so that the sliding plate slowly shrinks to one side under the cooperation of the return spring and the damper, avoiding the rotating disc knife from moving too fast to affect the cutting stability of the metal pipe, improving the cutting effect of the metal pipe, and at the same time, relatively reducing the contact depth between the rotating disc knife and the metal pipe, and increasing the distance between multiple rotating disc knives, avoiding the situation of knife collision, reducing the damage rate of the rotating disc knife, and improving the safety and fluency of the metal pipe cutting process.

[0028] 2. In the present invention, by setting a rotary cutting assembly, the driving motor drives the rotating ring to rotate through the transmission gear and the fixed gear ring. At the same time, the extrusion wheel periodically contacts the extrusion block, so that the extrusion block cooperates with the second spring to drive the connecting block to move back and forth along the stroke groove direction, so that the rotating disc knife periodically contacts the surface of the metal pipe and cuts it, and cooperates with the rotation of the rotating ring to complete the cutting of the metal pipe. The sliding rod drives the reciprocating motion of the rotating disc knife, so that the cutting depth of the metal pipe by the rotating disc knife is periodically deepened, thereby improving the cutting efficiency of the metal pipe, and the circular motion of the sliding rod will disperse the vertical cutting force of the rotating disc knife on the metal pipe, and cooperate with the setting of multiple rotating disc knives and the relative circular motion, so that the force on the outer surface of the metal pipe is not always limited to one point, so that the cutting force on the surface of the metal pipe is relatively dispersed, avoiding the cutting force on the surface of the metal pipe being concentrated on one point to cause mechanical deformation of the metal pipe, thereby improving the quality of the finished metal pipe.

[0029] 3. In the present invention, by setting an anti-deformation component, after the fixed tube and the outer support plate are inserted into the metal tube, the knob drives the rotating rod to rotate, and the rotating rod drives the outer support plate to move outward through the toothed plate, the linkage gear, the movable screw and the screw seat, so that the outer support plate supports the inner wall of the metal tube, provides a radial support force from the inside to the outside for the metal tube, and can interact with the vertical pressure generated by the rotating disc knife during cutting, thereby avoiding mechanical deformation of the metal tube caused by the rotating disc knife during cutting and improving the quality of the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a metal pipe cutting device capable of preventing deformation proposed by the present invention;

[0031] Figure 2A schematic diagram of a three-dimensional disassembled structure of a metal pipe cutting device capable of preventing deformation proposed by the present invention;

[0032] Figure 3 The present invention proposes Figure 2 The enlarged structural diagram of part A in the middle;

[0033] Figure 4 A schematic diagram of a three-dimensional split structure of a rotary cutting assembly of a metal pipe cutting device capable of preventing deformation proposed by the present invention;

[0034] Figure 5 The present invention proposes Figure 4 The enlarged structural diagram of part B in the middle;

[0035] Figure 6 A schematic diagram of a three-dimensional disassembled structure of an anti-collision knife assembly of a metal pipe cutting device capable of preventing deformation proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of the three-dimensional disassembled structure of an anti-deformation component of a metal pipe cutting device capable of preventing deformation proposed by the present invention.

[0037] Legend:

[0038] 1. Base; 2. Support frame; 3. Clamping device; 4. Anti-collision knife assembly; 401. Sliding rod; 402. First spring; 403. Sliding rod; 404. Fixed block; 405. Ball; 406. Moving rod; 407. Sliding plate; 408. Moving block; 409. Limiting groove; 410. Moving wheel; 411. Return spring; 412. Damper; 5. Fixed ring; 6. Rotating cutting assembly; 601. Rotating ring; 602. Transmission gear; 603. Driving motor; 604. Extrusion block; 6 ... 05. Fixed gear ring; 606. Travel block; 607. Extrusion wheel; 608. Connecting block; 609. Second spring; 610. Sliding column; 611. Travel groove; 7. Anti-deformation component; 701. Knob; 702. Outer support plate; 703. Mounting frame; 704. Fixed cylinder; 705. Slot; 706. Rotating rod; 707. Toothed disc; 708. Block; 709. Linking gear; 710. Moving screw; 711. Screw seat; 8. Connecting box; 9. Protective shell; 10. Rotating disc cutter. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-Figure 7 , the present invention provides a technical solution:

[0041] A metal pipe cutting device capable of preventing deformation comprises a base 1, an anti-deformation component 7 is arranged on one side of the top of the base 1, support frames 2 are connected to both sides of the top of the base 1, and a fixing ring 5 is connected between the two support frames 2, a rotating cutting component 6 is arranged on one side of the fixing ring 5, a plurality of connecting boxes 8 are arranged on the inner circumference of the rotating cutting component 6, and a rotating disc knife 10 is connected to the bottom of the connecting box 8 through an anti-collision knife component 4.

[0042] The anti-collision knife assembly 4 includes a moving rod 406, one end of which extends into the connecting box 8 and is connected to a sliding plate 407, a return spring 411 is arranged between the sliding plate 407 and the inner wall of the connecting box 8, and moving blocks 408 are arranged on both sides of the sliding plate 407 for limiting the sliding plate 407, and a moving wheel 410 is attached to the bottom of the moving block 408, and a sliding rod 401 is connected to the bottom of the moving wheel 410, and a fixed block 404 is connected to the bottom of the sliding rod 401, and a ball 405 is arranged at the bottom of the fixed block 404, and the ball 405 is triggered to release the limit of the sliding plate 407 by the moving block 408, and the sliding plate 407 drives the rotating disc knife 10 to retract to avoid collision with the knife, and the bottom of the moving block 408 is arranged in an inclined surface, and sliding rods 403 are connected to both sides of the inner wall of the connecting box 8, and a sliding groove is opened on one side of the moving block 408, and the sliding rod 403 is slidably connected in the sliding groove A first spring 402 is sleeved on the outer surface of the sliding rod 403, and two ends of the first spring 402 are respectively connected to one side of the moving block 408 and one side of the inner wall of the connecting box 8. A limiting groove 409 is provided on the side of the moving block 408 away from the sliding rod 403, and the sliding plate 407 is engaged with the limiting groove 409. Two ends of the return spring 411 are respectively connected to the bottom of the sliding plate 407 and the top of the inner wall of the connecting box 8, and two return springs 411 are distributed on both sides of the moving rod 406. A damper 412 is connected to the top of the sliding plate 407, and the side of the damper 412 away from the sliding plate 407 is connected to the top of the inner wall of the connecting box 8. The bottom of the moving rod 406 is connected to a protective shell 9, and a driving source is installed on one side of the protective shell 9, and the output end of the driving source is transmission-connected to the rotating disc cutter 10, and a plurality of clamping devices 3 are fixedly connected to the inner circumference of the fixing ring 5.

[0043] The specific implementation method is as follows: by setting an anti-collision knife assembly 4, when the rotating disc knife 10 cuts the metal pipe, the rotating disc knife 10 rotates and cuts the metal pipe under the drive of the rotating cutting assembly 6, and in this process, the cutting depth of the rotating disc knife 10 is periodically deepened. When the ball 405 contacts the outer surface of the metal pipe, it means that the safety distance between the rotating disc knife 10 and other rotating disc knives 10 or the surface of the metal pipe has reached the threshold. At this time, the ball 405 and the fixed block 404 are triggered by themselves under the thrust of the metal pipe surface, thereby driving the sliding rod 401 to move. The sliding rod 401 drives the moving block 408 to move to one side through the moving wheel 410, thereby releasing the limit on the sliding plate 407, so that the sliding plate 407 slowly shrinks to one side under the cooperation of the reset spring 411 and the damper 412, thereby avoiding the rotating disc knife 10 from moving too fast to affect the cutting stability of the metal pipe, thereby improving the cutting effect of the metal pipe.

[0044] The rotary cutting assembly 6 includes a rotating ring 601, which is rotatably connected to the fixed ring 5. A plurality of sliding posts 610 are distributed in a circular array in the rotating ring 601. The sliding posts 610 are slidably connected to the rotating ring 601. One end of the sliding post 610 is connected to the connecting box 8. The end of the sliding post 610 away from the connecting box 8 is connected to a connecting block 608. A second spring 609 is sleeved on the outer surface of the sliding post 610. The two ends of the second spring 609 are respectively connected to one side of the connecting box 8 and the other side of the connecting box 8. A travel block 606 is connected to one side of the connecting block 608. A plurality of travel grooves 611 are arranged in a circular array on one side of the rotating ring 601. The travel block 606 is slidably connected in the stroke groove 611, one end of the stroke block 606 extends through the stroke groove 611 to the other side of the rotating ring 601 and is rotatably connected to the extrusion wheel 607, a plurality of extrusion blocks 604 are distributed in a circular array on the inner circumference of the fixed ring 5, the cross-sectional shape of the extrusion block 604 is fan-shaped, and the extrusion wheel 607 periodically fits with the extrusion block 604 during rotation, and a driving motor 603 is fixedly installed on the top of the fixed ring 5 through a mounting plate, one end of the output shaft of the driving motor 603 is connected to a transmission gear 602, and the outer surface of the rotating ring 601 is connected to a fixed gear ring 605, and the transmission gear 602 is meshed with the fixed gear ring 605.

[0045] The specific implementation method is as follows: by setting a rotating cutting component 6, the driving motor 603 drives the rotating ring 601 to rotate through the transmission gear 602 and the fixed gear ring 605. At the same time, the extrusion wheel 607 periodically contacts the extrusion block 604, so that the extrusion block 604 cooperates with the second spring 609 to drive the connecting block 608 to move back and forth along the stroke groove 611, so that the rotating disc knife 10 periodically contacts the surface of the metal pipe and cuts it, and cooperates with the rotation of the rotating ring 601 to complete the cutting of the metal pipe. The sliding rod 401 drives the reciprocating motion of the rotating disc knife 10, so that the cutting depth of the metal pipe by the rotating disc knife 10 is periodically deepened, thereby improving the cutting efficiency of the metal pipe, and the circular motion of the sliding rod 401 will disperse the vertical cutting force of the rotating disc knife 10 on the metal pipe, thereby avoiding the cutting force on the surface of the metal pipe being concentrated at one point to cause mechanical deformation of the metal pipe, thereby improving the quality of the finished metal pipe.

[0046] The anti-deformation component 7 includes a fixed cylinder 704, a rotating rod 706 is rotatably connected to the fixed cylinder 704 through a bearing, and two toothed discs 707 are connected to the outer surface of the rotating rod 706. A plurality of linkage gears 709 are meshed on one side of the toothed disc 707, and a movable lead screw 710 is connected to one side of the linkage gear 709. The movable lead screw 710 is rotatably connected to the fixed cylinder 704, and one end of the movable lead screw 710 away from the linkage gear 709 extends to the outside of the fixed cylinder 704. The movable lead screw 710 A screw seat 711 is threadedly connected to the outer surface, and an outer support plate 702 is connected between two screw seats 711 located in the same plane. One end of the rotating rod 706 extends to the outside of the fixed cylinder 704 and is connected to the knob 701. A plurality of blocks 708 are connected to one side of the fixed cylinder 704. A slot 705 is provided on one side of the knob 701. The block 708 is snap-fitted to the slot 705. A mounting frame 703 is connected to the top of the base 1, and the fixed cylinder 704 is embedded in the mounting frame 703.

[0047] The specific implementation method is as follows: by setting the anti-deformation component 7, after the fixed cylinder 704 and the outer support plate 702 are inserted into the metal tube, the knob 701 drives the rotating rod 706 to rotate, and the rotating rod 706 drives the outer support plate 702 to move outward through the toothed disk 707, the linkage gear 709, the movable screw 710 and the screw seat 711, so that the outer support plate 702 supports the inner wall of the metal tube, provides a radial support force from the inside to the outside for the metal tube, and can interact with the vertical pressure generated by the rotating disc knife 10 during cutting, thereby avoiding mechanical deformation of the metal tube caused by the rotating disc knife 10 during cutting.

[0048] Working principle: When in use, during the process of cutting the metal tube, the metal tube is passed through the fixed ring 5 and the rotating ring 601, and the fixed tube 704 and the outer support plate 702 are inserted into the metal tube. After adjusting the length to be cut, the clamping device 3 is started, and the clamping device 3 moves inward and fixes the outer surface of the metal tube. The staff turns the knob 701, and the knob 701 drives the toothed disc 707 to rotate through the rotating rod 706. The toothed disc 707 drives the moving screw 710 to rotate through the linkage gear 709. The moving screw 710 drives the outer support plate 702 to move outward through the screw seat 711, so that the outer support plate 702 supports the inner wall of the metal tube. At this time, the slot 705 on the knob 701 and the block 708 are engaged with each other.

[0049] When cutting, start the driving motor 603 and the driving source, the driving source drives the rotating disc cutter 10 to rotate, the driving motor 603 drives the transmission gear 602 to rotate, the transmission gear 602 drives the rotating ring 601 to rotate through the fixed gear ring 605, and the rotating ring 601 drives the connecting box 8, the moving rod 406, the protective shell 9 and the rotating disc cutter 10 to rotate around the axis of the rotating ring 601 through the sliding column 610. During this process, the extrusion wheel 607 periodically contacts the extrusion block 604, and the extrusion block 604 cooperates with the second spring 609 to drive the connecting block 608 to move periodically along the direction of the stroke groove 611, so that the rotating disc cutter 10 periodically contacts the surface of the metal pipe and cuts it, and cooperates with the rotation of the rotating ring 601 to complete the cutting of the metal pipe.

[0050] And when the cutting stroke of the rotating disc knife 10 is too long, the ball 405 will first contact the outer surface of the metal tube, and the ball 405 and the fixed block 404 will move under the thrust of the metal tube surface, and the ball 405 and the fixed block 404 will drive the sliding rod 401 to move, and the sliding rod 401 will generate a thrust to the moving block 408 through the moving wheel 410, so that the moving block 408 moves to both sides, so that the limiting groove 409 is separated from the sliding plate 407, and the limiting of the sliding plate 407 is released. The sliding plate 407 moves upward under the drive of the reset spring 411, and the sliding plate 407 drives the protective shell 9 and the rotating disc knife 10 to move away from the metal tube through the moving rod 406, so as to avoid the rotating disc knife 10 from hitting the knife.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal pipe cutting device capable of preventing deformation, comprising a base (1), characterized in that: An anti-deformation component (7) is arranged on one side of the top of the base (1); support frames (2) are connected to both sides of the top of the base (1); a fixing ring (5) is connected between the two support frames (2); a rotating cutting component (6) is arranged on one side of the fixing ring (5); a plurality of connecting boxes (8) are arranged on the inner circumference of the rotating cutting component (6); and a rotating disc knife (10) is connected to the bottom of the connecting box (8) via an anti-collision knife component (4); The anti-deformation component (7) comprises a fixed cylinder (704), wherein a rotating rod (706) is rotatably connected to the fixed cylinder (704) via a bearing, wherein the outer surface of the rotating rod (706) is connected to two toothed discs (707), wherein one side of the toothed disc (707) is meshed with a plurality of linkage gears (709), wherein one side of the linkage gear (709) is connected to a movable lead screw (710), wherein the movable lead screw (710) is rotatably connected to the fixed cylinder (704), and wherein one end of the movable lead screw (710) away from the linkage gear (709) extends to the outside of the fixed cylinder (704), wherein the movable lead screw (710) ) is threadedly connected to a screw seat (711) on its outer surface, and an outer support plate (702) is connected between two screw seats (711) located in the same plane, one end of the rotating rod (706) extends to the outside of the fixed cylinder (704) and is connected to a knob (701), one side of the fixed cylinder (704) is connected to a plurality of clamping blocks (708), one side of the knob (701) is provided with a clamping groove (705), the clamping block (708) is clamped with the clamping groove (705), the top of the base (1) is connected to a mounting frame (703), and the fixed cylinder (704) is embedded in the mounting frame (703); The anti-collision knife assembly (4) comprises a moving rod (406), one end of which extends into the connection box (8) and is connected to a sliding plate (407), a return spring (411) is arranged between the sliding plate (407) and the inner wall of the connection box (8), moving blocks (408) are arranged on both sides of the sliding plate (407) for limiting the sliding plate (407), a moving wheel (410) is attached to the bottom of the moving block (408), a sliding rod (401) is connected to the bottom of the moving wheel (410), a fixed block (404) is connected to the bottom of the sliding rod (401), and a ball (405) is arranged at the bottom end of the fixed block (404), and the ball (405) triggers the release of the moving block (408) from limiting the sliding plate (407), and the sliding plate (407) drives the rotating disc knife (10) to retract to avoid collision.

2. The deformation-resistant metal pipe cutting device according to claim 1, characterized in that: The bottom of the moving block (408) is arranged in an inclined surface, and both sides of the inner wall of the connection box (8) are connected to sliding rods (403), one side of the moving block (408) is provided with a sliding groove, and the sliding rod (403) is slidably connected in the sliding groove, and the outer surface of the sliding rod (403) is sleeved with a first spring (402), and the two ends of the first spring (402) are respectively connected to one side of the moving block (408) and one side of the inner wall of the connection box (8), and a limiting groove (409) is provided on the side of the moving block (408) away from the sliding rod (403), and the sliding plate (407) and the limiting groove (409) are mutually engaged.

3. The deformation-resistant metal pipe cutting device according to claim 2, characterized in that: The two ends of the return spring (411) are respectively connected to the bottom of the sliding plate (407) and the top of the inner wall of the connection box (8), and the two return springs (411) are distributed on both sides of the moving rod (406). The top of the sliding plate (407) is connected to a damper (412), and the side of the damper (412) away from the sliding plate (407) is connected to the top of the inner wall of the connection box (8).

4. The deformation-resistant metal pipe cutting device according to claim 3, characterized in that: The bottom of the movable rod (406) is connected to a protective housing (9), the rotating disc cutter (10) is connected inside the protective housing (9), a driving source is installed on one side of the protective housing (9), and the output end of the driving source is transmission-connected to the rotating disc cutter (10), and a plurality of clamping devices (3) are fixedly connected to the inner circumference of the fixing ring (5).

5. The deformation-resistant metal pipe cutting device according to claim 1, characterized in that: The rotary cutting assembly (6) comprises a rotating ring (601), wherein the rotating ring (601) is rotatably connected to the fixed ring (5), a plurality of sliding columns (610) are distributed in a circular array in the rotating ring (601), the sliding columns (610) are slidably connected to the rotating ring (601), one end of the sliding column (610) is connected to the connection box (8), the end of the sliding column (610) away from the connection box (8) is connected to a connection block (608), a second spring (609) is sleeved on the outer surface of the sliding column (610), the two ends of the second spring (609) are respectively connected to one side of the connection box (8) and the other side of the connection box (8), one side of the connection block (608) is connected to a travel block (606), a plurality of travel grooves (611) are arranged in a circular array on one side of the rotating ring (601), and the travel block (606) is slidably connected in the travel groove (611).

6. The deformation-resistant metal pipe cutting device according to claim 5, characterized in that: One end of the travel block (606) extends to the other side of the rotating ring (601) through the travel groove (611) and is rotatably connected to an extrusion wheel (607). A plurality of extrusion blocks (604) are distributed in a circular array on the inner circumference of the fixed ring (5). The cross-section of the extrusion block (604) is fan-shaped. The extrusion wheel (607) periodically fits with the extrusion block (604) during rotation.

7. The deformation-resistant metal pipe cutting device according to claim 5, characterized in that: A driving motor (603) is fixedly mounted on the top of the fixed ring (5) via a mounting plate; one end of the output shaft of the driving motor (603) is connected to a transmission gear (602); the outer surface of the rotating ring (601) is connected to a fixed gear ring (605); and the transmission gear (602) meshes with the fixed gear ring (605).

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