Laser pipe cutting machine capable of preventing pipe body from deforming

By designing reciprocating, vibration, and rotation mechanisms, the deformation problem caused by impurities on the tube surface of the laser tube cutting machine was solved, achieving efficient removal and collection of impurities and ensuring cutting quality.

CN121339726APending Publication Date: 2026-01-16NANTONG XUNDONG PRECISION MACHINERY CO LTD
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Patent Information

Application Number
CN202511907131.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-17
Publication Date
2026-01-16

AI Technical Summary

Technical Problem

When existing laser tube cutting machines perform laser cutting on tubes with impurities on the surface, localized overheating at the cutting point may occur, causing tube deformation and affecting the cutting effect.

Method used

A reciprocating mechanism comprising a large motor, a bidirectional threaded rod, a support frame, a wire brush cylinder, a rotating column, and a connecting plate was designed. The large motor drives the bidirectional threaded rod to rotate, causing the support frame to reciprocate along the groove direction, which in turn drives the wire brush cylinder to remove impurities from the pipe surface. By combining a vibration mechanism and a rotation mechanism, and through the design of a support plate, spring, convex ball, and long plate, impurities are accelerated to fall off and are removed efficiently. Finally, a collection mechanism consisting of a connecting rod, scraper, and collection box is used to collect impurities in a concentrated manner.

Benefits of technology

It effectively removes rust and impurities from the pipe surface, prevents pipe deformation caused by local overheating, improves cutting results, and achieves efficient removal and centralized collection of impurities.

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Abstract

The invention relates to the technical field of laser pipe cutting machines, and discloses a laser pipe cutting machine capable of preventing pipe deformation, which comprises a machine tool, supporting legs are fixed below the machine tool, laser equipment is fixed on the side edge of the machine tool, a second clamping machine is fixed on the side edge of the machine tool, and a rack is fixed on the inner side wall of the machine tool. A sliding groove is formed in the side wall of the machine tool, the inner wall of the sliding groove is slidably connected with the lower end of a feeding box, a small motor is fixed to the inner wall of the feeding box, and a rotating rod is fixed to the output end of the small motor; according to the laser pipe cutting machine capable of preventing the pipe body from deforming, through the arrangement of a large motor, a bidirectional threaded rod, a supporting frame, a steel wire brush sleeve, a rotating column and a connecting plate, the large motor drives the bidirectional threaded rod to rotate, so that the supporting frame in threaded connection with the bidirectional threaded rod reciprocates in the direction of a sliding groove, and the effect that the steel wire brush cylinder removes impurities on the surface of a pipe is achieved; the problem that when impurities exist on the surface of a pipe, laser cutting is carried out, and pipe deformation is possibly caused by local overheating is solved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser pipe cutting machine, in particular to a laser pipe cutting machine capable of preventing pipe body deformation. BACKGROUND

[0002] In the mechanical manufacturing, building pipe, automobile parts and other industries, laser pipe cutting machine has become the core equipment of pipe processing due to its high cutting efficiency, smooth cutting edge and other advantages.

[0003] The existing laser pipe cutting machine directly performs laser cutting when welding pipe material, which may cause local overheating at the cutting position and lead to pipe body deformation if there are impurities on the surface of the pipe material, thereby affecting the cutting effect of the pipe material. In view of this, a laser pipe cutting machine capable of preventing pipe body deformation is proposed. SUMMARY

[0004] The present application aims to provide a laser pipe cutting machine capable of preventing pipe body deformation to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a laser pipe cutting machine capable of preventing pipe body deformation, comprising a machine tool, a support leg fixed below the machine tool, a laser device fixed on the side of the machine tool, a second clamping machine fixed on the side of the machine tool, a rack fixed on the inner side wall of the machine tool, a chute opened on the side wall of the machine tool, the lower end of a feeding box slidingly connected to the inner wall of the chute, a small motor fixed on the inner wall of the feeding box, a rotating rod fixed on the output end of the small motor, the rotating rod penetrating through the bottom of the feeding box and being rotatably connected at the penetrating position, a gear fixed on the bottom of the rotating rod, the gear being engaged with the rack, a first clamping machine fixed on the side wall of the feeding box, a reciprocating mechanism arranged above the machine tool for removing impurities on the surface of the pipe material, a vibrating mechanism arranged above the machine tool for accelerating the falling of impurities, a rotating mechanism arranged above the machine tool for improving the efficiency of removing impurities, and a collecting mechanism arranged above the machine tool for collecting impurities. The reciprocating mechanism comprises a large motor, a bidirectional threaded rod, a support frame, a steel wire brush sleeve, a rotating column and a connecting plate, the large motor being fixed on the side of the machine tool, one end of the bidirectional threaded rod being fixed on the output end of the large motor, the large motor driving the bidirectional threaded rod to rotate, and the support frame connected with the bidirectional threaded rod reciprocating along the direction of the chute.

[0006] Preferably, the other end of the bidirectional threaded rod is rotationally connected to the side wall of the machine tool away from the large motor, the bidirectional threaded rod penetrates through the feed box and is attached at the penetration position, one end of the support frame is threadedly connected to the bidirectional threaded rod, the other end of the support frame is slidingly connected to the inner wall of the chute, the steel wire brush cylinder is rotationally connected in the central ring of the support frame, the connecting plate is fixed to the outer wall of the steel wire brush cylinder, and the rotating column is rotationally connected to the inner wall of the connecting plate.

[0007] Preferably, the vibration mechanism comprises a support plate, a spring, a first convex ball, a second convex ball and a long plate, and the support plate is fixed above the side wall of the machine tool.

[0008] Preferably, one end of the spring is fixed to the side edge of the support plate, the long plate is fixed to the other end of the spring, the first convex ball is fixed to the side edge of the long plate, and the second convex ball is fixed to the side edge of the support frame. Through the arrangement of the support plate, the spring, the first convex ball, the second convex ball and the long plate, the second convex ball on the support frame intermittently extrudes the first convex ball on the long plate during the reciprocating movement of the support frame, so that the spring fixed to the long plate is compressed, and in this process, the long plate moves horizontally and reciprocally, and when the first convex ball and the second convex ball are separated, the long plate collides with the second convex ball to generate vibration.

[0009] Preferably, the rotating mechanism comprises a transmission plate and an extension rod, and the transmission plate is fixed above the long plate.

[0010] Preferably, the bottom end of the extension rod is fixed above the transmission plate, and the upper end of the extension rod is hingedly connected to the outer wall of the steel wire brush cylinder. Through the arrangement of the transmission plate and the extension rod, the horizontal reciprocating movement of the long plate drives the horizontal reciprocating movement of the transmission plate fixed thereto, and further drives the reciprocating movement of the extension rod.

[0011] Preferably, the collecting mechanism comprises a connecting rod, a scraper, a notch and a collecting box, and the connecting rod is fixed below the support frame.

[0012] Preferably, the scraper is fixed below the connecting rod, the notch is formed in the bottom of the machine tool, and the collecting box is slidingly connected to the bottom of the machine tool. Through the arrangement of the connecting rod, the scraper, the notch and the collecting box, the reciprocating movement of the support frame drives the scraper to scrape on the bottom of the machine tool.

[0013] Compared with the prior art, the laser pipe cutting machine for preventing the deformation of the pipe body has the following beneficial effects: 1. The laser pipe cutting machine for preventing pipe body deformation, through the setting of the large motor, the bidirectional threaded rod, the support frame, the steel wire brush sleeve, the rotating column and the connecting plate, the large motor drives the bidirectional threaded rod to rotate, so that the support frame which is screw connected with the bidirectional threaded rod reciprocates along the direction of the sliding groove, and the effect of removing impurities on the surface of the pipe by the steel wire brush cylinder is further achieved, and the problem that the pipe may be deformed due to local overheating when the pipe surface has rust or impurities and is subjected to laser cutting is solved.

[0014] 2. The laser pipe cutting machine for preventing pipe body deformation, through the setting of the support plate, the spring, the first convex ball, the second convex ball and the long plate, during the reciprocating movement of the support frame, the second convex ball on the support frame intermittently extrudes the first convex ball on the long plate, so that the spring fixed with the long plate is compressed, in this process, the long plate moves horizontally and reciprocally, when the first convex ball and the second convex ball are separated, the long plate collides with the second convex ball to generate vibration, which is further transmitted to the center ring of the support frame, so as to accelerate the falling of impurities on the surface of the pipe, and the problem that the impurities may still adhere to the pipe after being brushed off by the steel wire brush cylinder is solved.

[0015] 3. The laser pipe cutting machine for preventing pipe body deformation, through the setting of the transmission plate and the telescopic rod, the horizontal reciprocating movement of the long plate drives the transmission plate fixed therewith to move horizontally and reciprocally, which further drives the telescopic rod to reciprocate, so as to drive the steel wire brush cylinder to rotate reciprocally in the support frame, so as to achieve the effect of horizontal brushing and rotary friction of the pipe, and the efficiency of removing impurities is improved.

[0016] 4. The laser pipe cutting machine for preventing pipe body deformation, through the setting of the connecting rod, the scraper, the notch and the collecting box, during the reciprocating movement of the support frame, the connecting rod and the scraper are driven to scrape at the bottom of the machine tool, so as to achieve the effect that the impurities falling on the pipe are pushed into the notch and into the collecting box, and the collection of the impurities is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the application; Figure 2 It is a schematic diagram of the overall structure of the application; Figure 3 It is a schematic diagram of the partial cross-sectional structure of the application; Figure 4 It is a schematic diagram of the local structure of the application; Figure 5 It is a schematic diagram of the partial structure of the application; Figure 6 It is a schematic diagram of the local cross-sectional structure of the application.

[0018] In the figure: 1, machine tool; 2, support leg; 3, feed box; 4, first clamping machine; 5, second clamping machine; 6, laser equipment; 7, rack; 8, sliding groove; 9, small motor; 10, rotating rod; 11, gear; 12, reciprocating mechanism; 121, large motor; 122, bidirectional threaded rod; 123, support frame; 124, steel wire brush cylinder; 125, rotating column; 126, connecting plate; 13, vibration mechanism; 131, support plate; 132, spring; 133, first convex ball; 134, second convex ball; 135, long plate; 14, rotating mechanism; 141, transmission plate; 142, telescopic rod; 15, collection mechanism; 151, connecting rod; 152, scraper; 153, notch; 154, collection box. DETAILED DESCRIPTION

[0019] As Figures 1-6 shown, the present application provides a technical solution: a laser pipe cutting machine for preventing pipe body deformation, comprising a machine tool 1, a support leg 2 is fixed below the machine tool 1, a laser equipment 6 is fixed on the side edge of the machine tool 1, a second clamping machine 5 is fixed on the side edge of the machine tool 1, a rack 7 is fixed on the inner side wall of the machine tool 1, a sliding groove 8 is opened on the side wall of the machine tool 1, the lower end of a feed box 3 is slidingly connected to the inner wall of the sliding groove 8, a small motor 9 is fixed on the inner wall of the feed box 3, a rotating rod 10 is fixed on the output end of the small motor 9, the rotating rod 10 penetrates through the bottom of the feed box 3 and is rotationally connected at the penetrating position, a gear 11 is fixed on the bottom of the rotating rod 10, the gear 11 is engaged with the rack 7, a first clamping machine 4 is fixed on the side wall of the feed box 3, a reciprocating mechanism 12 for removing impurities on the surface of the pipe material is arranged above the machine tool 1; Wherein, the reciprocating mechanism 12 comprises: a large motor 121, a bidirectional threaded rod 122, a support frame 123, a steel wire brush cylinder 124, a rotating column 125 and a connecting plate 126; the large motor 121 is fixed on the side edge above the machine tool 1, one end of the bidirectional threaded rod 122 is fixed on the output end of the large motor 121, the other end of the bidirectional threaded rod 122 is rotationally connected with the side wall of the machine tool 1 away from the large motor 121, the bidirectional threaded rod 122 penetrates through the feed box 3 and is fitted at the penetrating position, one end of the support frame 123 is threadedly connected with the bidirectional threaded rod 122, the other end of the support frame 123 is slidingly connected with the inner wall of the sliding groove 8, the steel wire brush cylinder 124 is rotationally connected in the center ring of the support frame 123, the connecting plate 126 is fixed on the outer wall of the steel wire brush cylinder 124, the rotating column 125 is rotationally connected on the inner wall of the connecting plate 126, and the outer wall of the rotating column 125 is fitted with the support frame 123.

[0020] Through the setting of the large motor 121, the bidirectional threaded rod 122, the support frame 123, the steel wire brush cylinder 124, the rotating column 125 and the connecting plate 126, the large motor 121 drives the bidirectional threaded rod 122 to rotate, so that the support frame 123 which is threadedly connected therewith reciprocates along the direction of the sliding groove 8 on the machine tool 1; the support frame 123 drives the steel wire brush cylinder 124 inside to adhere to the surface of the pipe, and the removal effect of rust and impurities on the surface of the pipe is achieved through moving friction, solving the problem that when impurities adhere to the surface of the pipe, laser cutting may cause deformation of the pipe due to local overheating.

[0021] The upper portion of the machine tool 1 is provided with a vibration mechanism 13 for accelerating the falling of impurities, and the vibration mechanism 13 comprises a support plate 131, a spring 132, a first convex ball 133, a second convex ball 134 and a long plate 135; the support plate 131 is fixed to the upper portion of the side wall of the machine tool 1, one end of the spring 132 is fixed to the side edge of the support plate 131, the long plate 135 is fixed to the other end of the spring 132, the first convex ball 133 is fixed to the side edge of the long plate 135, and the second convex ball 134 is fixed to the side edge of the support frame 123; through the setting of the support plate 131, the spring 132, the first convex ball 133, the second convex ball 134 and the long plate 135, during the reciprocating movement of the support frame 123 along the sliding groove 8, the second convex ball 134 on the side wall of the support frame 123 intermittently extrudes the first convex ball 133 fixed on the long plate 135, so that the spring 132 fixedly connected to one end of the long plate 135 is compressed and stored energy; during this process, the long plate 135 reciprocates in the horizontal direction; when the first convex ball 133 and the second convex ball 134 are disengaged from extrusion, the long plate 135 moves reversely under the restoring force of the spring 132 and collides with the second convex ball 134 to generate vibration, which is transmitted to the pipe at the center ring of the support frame 123, achieving the effect of accelerating the falling of impurities brushed off from the surface of the pipe, and solving the problem that impurities brushed off by the steel wire brush cylinder 124 may still adhere to the surface of the pipe.

[0022] The upper portion of the machine tool 1 is provided with a rotating mechanism 14 for improving the removal efficiency of impurities, and the rotating mechanism 14 comprises a transmission plate 141 and an extension rod 142; the transmission plate 141 is fixed to the upper portion of the long plate 135, and the bottom end of the extension rod 142 is fixed to the upper portion of the transmission plate 141; the upper end of the extension rod 142 is hingedly connected to the outer wall of the steel wire brush cylinder 124; through the setting of the transmission plate 141 and the extension rod 142, the horizontal reciprocating movement of the long plate 135 drives the transmission plate 141 fixedly connected thereto to move horizontally and reciprocally synchronously, the transmission plate 141 achieves transmission effect with the outer wall of the steel wire brush cylinder 124 through the extension rod 142, so that the extension rod 142 moves reciprocally with the transmission plate 141, and finally drives the steel wire brush cylinder 124 to rotate reciprocally around its own axis in the support frame 123; achieving the double cleaning effect of horizontal brushing and rotary friction on the surface of the pipe, greatly improving the removal efficiency of impurities.

[0023] The machine tool 1 is provided with a collection mechanism 15 for collecting impurities above the machine tool 1, and the collection mechanism 15 comprises a connecting rod 151, a scraper 152, a notch 153 and a collection box 154; the connecting rod 151 is fixed below the support frame 123, the scraper 152 is fixed below the connecting rod 151, the notch 153 is opened in the bottom of the machine tool 1, and the collection box 154 is slidably connected to the bottom of the machine tool 1; through the arrangement of the connecting rod 151, the scraper 152, the notch 153 and the collection box 154, the reciprocating movement of the support frame 123 drives the scraper 152 to move synchronously through the connecting rod 151, the scraper 152 is scraped along the bottom end face of the machine tool 1, the impurities falling from the surface of the pipe are pushed to the direction of the notch 153 opened in the bottom of the machine tool 1, and the impurities fall into the collection box 154 below through the notch 153, so that the effect of collecting impurities is achieved, and the subsequent cleaning and treatment of the impurities are facilitated.

[0024] Working principle: first, the staff inserts the pipe to be cut into the hollow part of the feeding box 3, and then successively passes through the clamping hole of the first clamping machine 4, the center cavity of the steel wire brush cylinder 124 and the hollow part of the side wall of the machine tool 1, and finally is inserted into the clamping hole of the second clamping machine 5; start the first clamping machine 4 and the second clamping machine 5, and fix the pipe through the synchronous clamping action of the two, so as to ensure the stability of the pipe in the subsequent operation.

[0025] Then start the small motor 9 and the large motor 121, at this time, the laser equipment 6 can be operated through the control system to cut the pipe to be cut, wherein the start-stop and rotating speed of the small motor 9 are controlled by the cutting program of the laser equipment 6, so as to cooperate with the cutting feeding; when the small motor 9 receives the signal of the laser equipment 6 and starts to rotate, the output end drives the rotating rod 10 to rotate synchronously, and the gear 11 fixed on the outer wall of the rotating rod 10 rotates accordingly; since the gear 11 is engaged with the rack 7 on the machine tool 1, and the bottom of the feeding box 3 is slidably connected with the sliding groove 8 of the machine tool 1, the rotation of the gear 11 is converted into the linear movement of the feeding box 3, so that the feeding box 3 moves stably along the rack 7 to the side close to the laser equipment 6, and the precise feeding process of the pipe is completed. After the large motor 121 is started, the bidirectional threaded rod 122 fixed on the output end thereof rotates; since one end of the support frame 123 is threadedly connected with the bidirectional threaded rod 122, and the bottom of the support frame 123 is slidably attached to the sliding groove 8 of the machine tool 1, under the limiting action of the sliding groove 8, the support frame 123 moves horizontally and reciprocally with the rotation of the bidirectional threaded rod 122. The steel wire brush cylinder 124 installed in the support frame 123 moves synchronously, and the bristles closely attach to the outer wall of the pipe, so as to scrape and clean the rust and impurities on the surface of the pipe through moving friction, and provide a clean surface for subsequent laser cutting. Meanwhile, the second convex ball 134 fixed on the side of the support frame 123 will intermittently extrude the plurality of first convex balls 133 on the long plate 135 during the reciprocating movement of the support frame 123: when the second convex ball 134 is in contact with the first convex ball 133 and extrudes it, the spring 132 fixed at one end of the long plate 135 and fixed at the other end of the support plate 131 inside the machine tool 1 is compressed and stored, and the long plate 135 moves along the horizontal direction to one side of the support plate 131; when the support frame 123 continues to move so that the second convex ball 134 is separated from the first convex ball 133, the spring 132 releases the reset force to push the long plate 135 to move in the opposite direction, and the long plate 135 hits the first convex ball 133 to generate vibration, which is transmitted to the steel wire brush cylinder 124 at the center hollow ring of the support frame 123, and acts on the surface of the pipe, so that the impurities brushed off are quickly separated from the pipe and the steel wire brush cylinder 124, avoiding secondary attachment.

[0026] In addition, when the long plate 135 moves horizontally, the transmission plate 141 fixed at the end thereof moves synchronously, and the transmission plate 141 drives the telescopic rod 142 connected thereto to move horizontally and reciprocally; since the upper end of the telescopic rod 142 is hinged to the outer wall of the steel wire brush cylinder 124, and the connecting plate 126 fixed to the outer wall of the steel wire brush cylinder 124 limits the rotation direction of the rotating column 125, the reciprocating extension and contraction of the telescopic rod 142 is converted into the reciprocating rotation of the steel wire brush cylinder 124 in the support frame 123.

[0027] When the support frame 123 moves, the connecting rod 151 is driven by the connecting member to move synchronously, and the scraper 152 fixed at the lower end of the connecting rod 151 abuts against the bottom end face of the machine tool 1 to move reciprocally, so as to push the impurities falling from the surface of the pipe to the direction of the notch 153 opened in the bottom of the machine tool 1; the impurities fall into the collecting box 154 below the machine tool 1 through the notch 153, so as to realize the centralized collection of the impurities. The above has made a detailed description of the present application in general, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the present application are within the protection scope of the present application.

Claims

1. A laser tube cutting machine for preventing deformation of a tube body, comprising a machine tool (1), characterized in that: The lower part of the machine tool (1) is fixed with a support leg (2), the side of the machine tool (1) is fixed with a laser device (6), the side of the machine tool (1) is fixed with a second clamping machine (5), the inner side wall of the machine tool (1) is fixed with a rack (7), the side wall of the machine tool (1) is provided with a chute (8), the lower end of the feeding box (3) is slidably connected to the inner wall of the chute (8), the inner wall of the feeding box (3) is fixed with a small motor (9), the output end of the small motor (9) is fixed with a rotating rod (10), the rotating rod (10) penetrates the bottom of the feeding box (3) and is rotatably connected at the penetrating position, the bottom of the rotating rod (10) is fixed with a gear (11), the gear (11) is engaged with the rack (7), the side wall of the feeding box (3) is fixed with a first clamping machine (4), the upper part of the machine tool (1) is provided with a reciprocating mechanism (12) for removing impurities on the surface of the pipe, the upper part of the machine tool (1) is provided with a vibrating mechanism (13) for accelerating the falling of impurities, and the upper part of the machine tool (1) is provided with a rotating mechanism (14) for improving the efficiency of removing impurities. The reciprocating mechanism (12) comprises a large motor (121), a bidirectional threaded rod (122), a support frame (123), a steel wire brush cylinder (124), a rotating column (125) and a connecting plate (126); the large motor (121) is fixed on the side of the machine tool (1), and one end of the bidirectional threaded rod (122) is fixed on the output end of the large motor (121).

2. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 1, characterized by: The other end of the bidirectional threaded rod (122) is rotatably connected to the side wall of the machine tool (1) away from the large motor (121), the bidirectional threaded rod (122) penetrates the feeding box (3) and is attached at the penetrating position, one end of the support frame (123) is threadedly connected with the bidirectional threaded rod (122), the other end of the support frame (123) is slidably connected with the inner wall of the chute (8), the steel wire brush cylinder (124) is rotatably connected in the center ring of the support frame (123), the connecting plate (126) is fixed on the outer wall of the steel wire brush cylinder (124), the rotating column (125) is rotatably connected to the inner wall of the connecting plate (126), and the outer wall of the rotating column (125) is attached to the support frame (123).

3. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 2, characterized by: The vibrating mechanism (13) comprises a support plate (131), a spring (132), a first convex ball (133), a second convex ball (134) and a long plate (135); the support plate (131) is fixed on the upper part of the side wall of the machine tool (1).

4. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 3, characterized by: One end of the spring (132) is fixed on the side of the support plate (131), the long plate (135) is fixed on the other end of the spring (132), the first convex ball (133) is fixed on the side of the long plate (135), and the second convex ball (134) is fixed on the side of the support frame (123).

5. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 1, characterized by: The rotating mechanism (14) comprises a transmission plate (141) and an extension rod (142), and the transmission plate (141) is fixed on the upper part of the long plate (135).

6. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 5, wherein: The bottom end of the telescopic rod (142) is fixed above the transmission plate (141), and the upper end of the telescopic rod (142) is hinged to the outer wall of the steel wire brush cylinder (124).

7. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 1, wherein: The machine tool (1) is provided with a collection mechanism (15) with impurity collection function above the machine tool (1); the collection mechanism (15) comprises a connecting rod (151), a scraper (152), a notch (153) and a collection box (154); the connecting rod (151) is fixed below the support frame (123).

8. The laser pipe cutting machine for preventing deformation of a pipe body according to claim 4, wherein: The scraper (152) is fixed below the connecting rod (151), the notch (153) is opened in the bottom of the machine tool (1), and the collection box (154) is slidingly connected to the bottom of the machine tool (1).