A length cutting machine for seamless steel pipe after rolling forming

Abstract

The application relates to the technical field of steel pipe cutting, in particular to a fixed-length cutting machine for seamless steel pipes after rolling forming, which comprises a base, a fixed plate and a supporting track fixedly installed on the base, a pressing plate fixedly arranged on the supporting track, a horizontal plate fixedly arranged on the fixed plate, a supporting rod rotatably arranged on the base and symmetrically arranged, a guide wheel fixedly arranged on the supporting rod and used for driving the movement of a steel pipe arranged on the supporting track, a horizontal translation mechanism arranged on the horizontal plate, a cutting disc connected to the horizontal translation mechanism, a trigger transmission mechanism arranged on the horizontal plate and connected with the horizontal translation mechanism, an intermittent transmission mechanism arranged on the base and connected with the trigger transmission mechanism, and an adjusting assembly arranged on the fixed plate and connected with the intermittent transmission mechanism. The steel pipe can be cut by the cutting disc, and the size of the fixed-length cutting of the steel pipe can be adjusted according to requirements, so that the application range is increased.

Description

Technical Field

[0001] This invention relates to the field of steel pipe cutting technology, specifically a fixed-length cutting machine for seamless steel pipes after rolling. Background Technology

[0002] Seamless steel pipes are made by piercing a whole round steel bar. The steel pipe without weld seams on the surface is called a seamless steel pipe. The seamlessness of steel pipes is mainly achieved by tension reduction, which is a continuous rolling process of hollow base material without a mandrel.

[0003] In the plug rolling process, a solid round billet is used. The billet is first heated uniformly in a rotary hearth furnace and then pierced. A skew roll piercing mill is used to pierce the billet. The piercing mill presses the billet against a mandrel to pierce it, and then rolls the billet between the rolls and the mandrel. The pierced billet or hollow tube is then rolled (hot or cold) to obtain the specified outer diameter and wall thickness.

[0004] After the steel pipe is formed, it needs to be cut to a fixed length. The existing fixed length cutting is generally done by cutting the steel pipe with a cutting machine, and then cutting the steel pipe again after moving it a certain distance manually or mechanically. However, since the two operate independently, the amount of steel pipe cut often changes due to errors in program operation or delays in related electronic components. Summary of the Invention

[0005] The purpose of this invention is to provide a fixed-length cutting machine for seamless steel pipes after rolling, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fixed-length cutting machine for seamless steel pipes after rolling and forming includes:

[0008] A base, on which a fixing plate and a support rail are fixedly installed, a pressure plate is fixedly installed on the support rail, and a horizontal plate is fixedly installed on the fixing plate;

[0009] A support rod is rotatably mounted on the base and arranged symmetrically. A guide wheel is fixed on the support rod to drive the steel pipe placed on the support track to move.

[0010] A lateral translation mechanism is provided on the horizontal plate, and a cutting disc is connected to the lateral translation mechanism. The lateral translation mechanism can drive the cutting disc to reciprocate in the horizontal direction.

[0011] Its characteristic is that it further includes:

[0012] A trigger transmission mechanism is provided on the horizontal plate and connected to the transverse translation mechanism. An intermittent transmission mechanism connected to the trigger transmission mechanism is provided on the base. The trigger transmission mechanism can operate when the transverse translation mechanism moves and drive the support rod to rotate intermittently through the intermittent transmission mechanism.

[0013] An adjustment component is disposed on the fixed plate and connected to the intermittent transmission mechanism. The adjustment component can adjust the rotational speed of the support rod and the guide wheel through the intermittent transmission mechanism.

[0014] As a further embodiment of the present invention: the transverse translation mechanism includes transmission rods rotatably mounted on the horizontal plate and arranged symmetrically, one of the transmission rods being connected to a motor output shaft fixedly mounted on the horizontal plate, a pulley being fixed at one end of the transmission rod away from the horizontal plate, a conveyor belt being sleeved on the pulley, a protrusion being fixed on the conveyor belt, a guide assembly being provided on the fixed plate and connected to the protrusion, and the guide assembly being connected to the cutting disc.

[0015] As a further embodiment of the present invention: the guide assembly includes a guide rod fixedly mounted on the fixed plate, a guide sleeve movably mounted on the guide rod, the guide sleeve being fixedly connected to the cutting disc, a movable plate being fixedly mounted on the side wall of the guide sleeve, and a slot being provided on the movable plate for sliding connection with the protrusion;

[0016] It also includes a first limiting rod fixedly installed on the guide rod, and the inner wall of the guide sleeve is provided with a first limiting groove that engages with the first limiting rod.

[0017] As a further embodiment of the present invention: the trigger transmission mechanism includes a fixed ring fixedly installed on the transmission rod, a movable disc movably installed on the transmission rod that abuts against the fixed ring, and a limiting wheel fixed on the conveyor belt that cooperates with the movable disc;

[0018] It also includes a second limiting rod fixedly installed on the transmission rod, a second limiting groove that engages with the second limiting rod is provided on the inner wall of the movable plate, and a limiting component connected to the movable plate is provided on the horizontal plate.

[0019] As a further embodiment of the present invention: the limiting component includes a rotating sleeve rotatably mounted on the horizontal plate and sleeved on the transmission rod, a follower tooth fixed on the rotating sleeve, and a limiting tooth cooperating with the follower tooth fixed on the movable disk;

[0020] It also includes a spring that is sleeved on the transmission rod and abuts against the movable disc.

[0021] As a further embodiment of the present invention: the intermittent transmission mechanism includes a rotating rod rotatably mounted on the base, a second belt rotatably connected to the support rod is sleeved on the rotating rod, and a rotating component connected to the rotating sleeve and the adjusting component is provided on the rotating rod.

[0022] As a further embodiment of the present invention: the rotating assembly includes a fixed conical disc fixedly mounted on the rotating rod, a movable sleeve movably mounted on the rotating rod, the movable sleeve being connected to the adjusting assembly, a movable conical disc fixedly mounted on the movable sleeve, and a sliding structure connected to the rotating sleeve being provided on the movable conical disc and the fixed conical disc.

[0023] As a further embodiment of the present invention: the sliding structure includes a plurality of grooves respectively formed on the fixed cone disk and the movable cone disk and distributed equidistantly in a circle, a sliding rod is slidably installed in the groove, an arc-shaped plate is fixed on the sliding rod, and a No. 1 belt is sleeved on the arc-shaped plate and rotatably connected to the rotating sleeve.

[0024] As a further embodiment of the present invention: the adjusting assembly includes a cylinder fixedly mounted on the fixed plate, a connecting plate fixed on the output shaft of the cylinder, and the connecting plate being rotatably connected to the movable sleeve.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: This application can cut steel pipes to a fixed length and adjust the cutting size of the steel pipes according to the required requirements. When the steel pipe needs to be cut, the cutting disc is driven to move under the action of the transverse translation mechanism, thereby cutting the steel pipe. After the steel pipe is cut, the intermittent transmission mechanism is driven to move under the action of the trigger transmission mechanism, causing the support rod to rotate, thereby driving the steel pipe to move along the length direction of the support track through the guide wheel. When the intermittent transmission mechanism stops working, the steel pipe no longer moves. At this time, the steel pipe is cut again by the cutting disc under the action of the transverse translation mechanism. If it is necessary to adjust the cutting amount of the steel pipe each time, the adjustment component works and drives the intermittent transmission mechanism to move, thereby adjusting the rotation speed of the guide wheel through the support rod to change the cutting amount of the steel pipe by the cutting disc. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of one embodiment of a fixed-length cutting machine for seamless steel pipes after rolling.

[0027] Figure 2 This is a schematic diagram of the structure of a fixed-length cutting machine after seamless steel pipe is rolled into shape, showing another angle in one embodiment.

[0028] Figure 3 This is a schematic diagram of a half-section structure of a fixed-length cutting machine for seamless steel pipes after rolling.

[0029] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0030] Figure 5 This is a schematic diagram showing the connection relationship between a portion of the transverse translation mechanism and a portion of the trigger transmission mechanism in one embodiment of a fixed-length cutting machine for seamless steel pipes after rolling.

[0031] Figure 6 This is an exploded structural diagram of a portion of the trigger transmission mechanism in one embodiment of a fixed-length cutting machine for seamless steel pipes after rolling.

[0032] Figure 7 This is an exploded structural diagram of part of the transverse translation mechanism in one embodiment of a fixed-length cutting machine for seamless steel pipes after rolling.

[0033] Figure 8 This is a schematic diagram of the structure of some intermittent transmission mechanism and adjustment components in one embodiment of a fixed-length cutting machine for seamless steel pipes after rolling.

[0034] Figure 9 This is an exploded structural diagram of part of the intermittent transmission mechanism and adjustment component in one embodiment of a fixed-length cutting machine for seamless steel pipes after rolling.

[0035] In the diagram: 1. Base; 2. Fixing plate; 3. Horizontal plate; 4. Motor; 5. Transmission rod; 6. Conveyor belt; 7. Protrusion; 8. Limiting wheel; 9. Guide rod; 10. Guide sleeve; 11. Movable plate; 12. Slot; 13. Cutting disc; 14. Fixing ring; 15. Movable disc; 16. Limiting tooth; 17. Rotating sleeve; 18. Follower tooth; 19. Spring; 20. Belt No. 1; 21. Rotating rod; 22. Fixing cone disc; 23. Groove; 24. Movable sleeve; 25. Movable cone disc; 26. Sliding rod; 27. Arc plate; 28. Cylinder; 29. ​​Connecting plate; 30. Belt No. 2; 31. Support rod; 32. Guide wheel; 33. Support rail; 34. Pressure plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0038] Please see Figures 1-9 In this embodiment of the invention, a fixed-length cutting machine for seamless steel pipes after rolling includes:

[0039] A base 1, on which a fixing plate 2 and a support rail 33 are fixedly installed, a pressure plate 34 is fixedly installed on the support rail 33, and a horizontal plate 3 is fixedly installed on the fixing plate 2;

[0040] A support rod 31 is rotatably mounted on the base 1 and is symmetrically arranged. A guide wheel 32 is fixed on the support rod 31 for driving the steel pipe placed on the support rail 33 to move.

[0041] Please see Figures 1-3 , Figures 5-7 A lateral translation mechanism is mounted on the horizontal plate 3. A cutting disc 13 is connected to the lateral translation mechanism, which drives the cutting disc 13 to reciprocate in the horizontal direction. The lateral translation mechanism includes transmission rods 5 rotatably mounted on the horizontal plate 3 and arranged symmetrically. One of the transmission rods 5 is connected to the output shaft of a motor 4 fixedly mounted on the horizontal plate 3. A pulley is fixed to the end of the transmission rod 5 away from the horizontal plate 3. A conveyor belt 6 is sleeved on the pulley. A protrusion 7 is fixed on the conveyor belt 6. A fixing plate 2 is provided with a protrusion 7. The guide assembly connected to the cutting disc 13 includes a guide rod 9 fixedly mounted on the fixed plate 2, a guide sleeve 10 movably mounted on the guide rod 9, the guide sleeve 10 being fixedly connected to the cutting disc 13, a movable plate 11 fixed to the side wall of the guide sleeve 10, and a slot 12 on the movable plate 11 that slidably connects with the protrusion 7; it also includes a first limiting rod fixedly mounted on the guide rod 9, and a first limiting groove on the inner wall of the guide sleeve 10 that engages with the first limiting rod.

[0042] In detail, when it is necessary to cut the steel pipe, the steel pipe can be placed on the support rail 33, and under the action of the pressure plate 34, it is ensured that the steel pipe will not be displaced. In the initial state, the cutting disc 13 is located at the end of the stroke on one side of the guide rod 9. At this time, the motor 4 works, driving the transmission rod 5 to rotate, thereby driving the pulley to rotate. Under the action of the pulley, the conveyor belt 6 is driven to move, causing the protrusion 7 to move. Since the protrusion 7 is engaged with the slot 12, the movable plate 11 with the slot 12 is moved. The movable plate 11 will also drive the guide sleeve 10 to move along the length direction of the guide rod 9. And since the first limiting groove and the first limiting rod are slidably connected, it is ensured that the guide sleeve 10 will not be offset, so as to ensure that the slot 12 is always engaged with the protrusion 7. The guide sleeve 10 will also drive the cutting disc 13 to move. When the cutting disc 13 moves to the position where it engages with the steel pipe, the steel pipe is cut under the action of the cutting disc 13. After the cutting disc 13 finishes cutting, the conveyor belt 6 will drive the trigger transmission mechanism to move, and drive the support rod 31 to rotate through the intermittent transmission mechanism. This will drive the steel pipe to move along the length direction of the support track 33 through the guide wheel 32. When the cutting disc 13 moves to the end of the stroke on one side of the guide rod 9, the protrusion 7 moves to the end of the stroke. At this time, the conveyor belt 6 continues to move, causing the cutting disc 13 to move toward the initial position. Before the cutting disc 13 contacts the steel pipe, the intermittent transmission mechanism stops working, causing the guide wheel 32 to stop rotating. The steel pipe stops moving, and the steel pipe is cut to a fixed length again under the action of the cutting disc 13. The above steps are repeated to cut the steel pipe to a fixed length.

[0043] Also includes:

[0044] Please see Figures 1-6 A trigger transmission mechanism is provided on the horizontal plate 3 and connected to the transverse translation mechanism. The trigger transmission mechanism includes a fixed ring 14 fixedly installed on the transmission rod 5, a movable disc 15 movably installed on the transmission rod 5 and abutting against the fixed ring 14, and a limiting wheel 8 fixed on the conveyor belt 6 that cooperates with the movable disc 15; it also includes a second limiting rod fixedly installed on the transmission rod 5, a second limiting groove opened on the inner wall of the movable disc 15 that engages with the second limiting rod, and a limiting assembly connected to the movable disc 15 on the horizontal plate 3. The limiting assembly includes a rotating sleeve 17 rotatably installed on the horizontal plate 3 and sleeved on the transmission rod 5, a follower tooth 18 fixed on the rotating sleeve 17, and a limiting tooth 16 fixed on the movable disc 15 that cooperates with the follower tooth 18; it also includes a spring 19 sleeved on the transmission rod 5 and abutting against the movable disc 15.

[0045] It should be noted that during steel pipe cutting, the steel pipe must be kept stationary. Therefore, the guide wheel 32 needs to stop rotating. Initially, the spring 19 is compressed, causing the movable disc 15 to be at the end of its stroke away from the rotating sleeve 17 and in contact with the fixed ring 14. The follower tooth 18 is separated from the limit tooth 16, and the limit wheel 8 is separated from the movable disc 15. At this time, the cutting disc 13 moves and cuts the steel pipe. After cutting, the conveyor belt 6 continues to move, driving the limit wheel 8 to move. When the limit wheel 8 moves to the position where it contacts the movable disc 15, the movable disc 15 will move away from the fixed ring 14. The fixed ring 14 moves in the direction of movement, which drives the limiting tooth 16 to move, causing the spring 19 to be compressed. When the limiting tooth 16 moves to the position of engaging with the follower tooth 18, the transmission rod 5 rotates, and under the action of the second limiting rod and the second limiting groove, the movable disk 15 rotates. Thus, the limiting tooth 16 and the follower tooth 18 rotate synchronously, driving the rotating sleeve 17 to rotate. The rotating sleeve 17 will drive the support rod 31 to rotate through the intermittent transmission mechanism, thereby driving the steel pipe to move through the guide wheel 32, so as to ensure that the steel pipe will not move when the cutting disk 13 cuts the steel pipe. After the cutting disk 13 cuts the steel pipe, the steel pipe is cut.

[0046] Preferably, after the steel pipe is cut, the limiting wheel 8 will separate from the movable disc 15, the spring 19 will be released elastically, and the movable disc 15 will return to the position of abutting against the fixed ring 14. The movable disc 15 will also drive the limiting tooth 16 to separate from the follower tooth 18, so that the rotating sleeve 17 stops rotating, ensuring that the guide wheel 32 stops rotating.

[0047] Please see Figures 1-3 , Figure 8 , Figure 9The base 1 is provided with an intermittent transmission mechanism connected to the trigger transmission mechanism. The trigger transmission mechanism can operate when the lateral translation mechanism moves, and drives the support rod 31 to rotate intermittently through the intermittent transmission mechanism. The intermittent transmission mechanism includes a rotating rod 21 rotatably mounted on the base 1. A second belt 30 rotatably connected to the support rod 31 is sleeved on the rotating rod 21. A rotating assembly connected to the rotating sleeve 17 and the adjusting assembly is provided on the rotating rod 21. The rotating assembly includes a fixed conical disc 22 fixedly mounted on the rotating rod 21. A movable sleeve 24 is movably mounted on the 21, and the movable sleeve 24 is connected to the adjusting component. A movable conical disc 25 is fixedly mounted on the movable sleeve 24. The movable conical disc 25 and the fixed conical disc 22 are provided with sliding structures that are connected to the rotating sleeve 17. The aforementioned sliding structure includes a plurality of grooves 23 that are respectively opened on the fixed conical disc 22 and the movable conical disc 25 and are distributed equidistantly in a circle. A sliding rod 26 is slidably mounted in the groove 23. An arc-shaped plate 27 is fixed on the sliding rod 26. A first belt 20 that is rotatably connected to the rotating sleeve 17 is sleeved on the arc-shaped plate 27.

[0048] Furthermore, after the cutting disc 13 finishes cutting, the steel pipe needs to be driven to move a certain distance to ensure the subsequent fixed-length cutting of the steel pipe. At this time, the limiting wheel 8 abuts against the movable disc 15, so that the limiting tooth 16 engages with the follower tooth 18, thereby driving the rotating sleeve 17 to rotate. The rotating sleeve 17 will also drive the arc plate 27 to move through the first belt 20, thereby driving the sliding rod 26 to move, causing the fixed cone disc 22 and the movable cone disc 25 with the groove 23 to rotate. The fixed cone disc 22 will also drive the rotating rod 21 to rotate, thereby driving the support rod 31 to rotate through the second belt 30, so that the steel pipe can move along the length direction of the support track 33 through the guide wheel 32. When the limiting tooth 16 and the follower tooth 18 separate, the guide wheel 32 stops rotating.

[0049] Please see Figures 1-3 , Figure 8 , Figure 9 An adjustment component is disposed on the fixed plate 2 and connected to the intermittent transmission mechanism. The adjustment component can adjust the rotational speed of the support rod 31 and the guide wheel 32 through the intermittent transmission mechanism. The adjustment component includes a cylinder 28 fixedly mounted on the fixed plate 2. A connecting plate 29 is fixed on the output shaft of the cylinder 28. The connecting plate 29 is rotatably connected to the movable sleeve 24.

[0050] Furthermore, if it is necessary to adjust the cutting length of the steel pipe each time, the rotation speed of the guide wheel 32 needs to be adjusted. When it is necessary to increase the cutting size of the steel pipe, the cylinder 28 works, driving the connecting plate 29 to move, thereby driving the movable sleeve 24 to move away from the fixed cone plate 22. The movable sleeve 24 also drives the movable cone plate 25 to move, causing the sliding rod 26 to move along the length direction of the groove 23, so as to control the reduction of the distance between the arc plates 27. The first belt 20 can be stretched or contracted to a certain extent. When the distance between the arc plates 27 decreases, the first belt 20 will contract, causing the rotation speed of the rotating rod 21 to increase, thereby increasing the rotation speed of the guide wheel 32, and increasing the stroke of the steel pipe. Similarly, if it is necessary to reduce the cutting size of the steel pipe, the cylinder 28 can control the movable sleeve 24 to move towards the fixed cone plate 22 through the connecting plate 29, so as to increase the distance between the arc plates 27. The first belt 20 will stretch, causing the rotation speed of the rotating rod 21 to decrease, thereby reducing the rotation speed of the guide wheel 32, and reducing the stroke of the steel pipe.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixed-length cutting machine after seamless steel pipe rolling forming, comprising: a base (1), a fixed plate (2) and a support rail (33) are fixedly installed on the base (1), a pressing plate (34) is fixed on the support rail (33), and a cross plate (3) is fixed on the fixed plate (2); supporting rods (31) are rotatably installed on the base (1) and symmetrically arranged, and a guide wheel (32) is fixed on the supporting rod (31) for driving the steel pipe placed on the support rail (33) to move; a horizontal translation mechanism is arranged on the cross plate (3), a cutting disc (13) is connected to the horizontal translation mechanism, and the horizontal translation mechanism can drive the cutting disc (13) to reciprocate in the horizontal direction; characterized in that it further comprises: a trigger transmission mechanism arranged on the cross plate (3) and connected with the horizontal translation mechanism, an intermittent transmission mechanism connected with the trigger transmission mechanism is arranged on the base (1), the trigger transmission mechanism can act when the horizontal translation mechanism moves, and the supporting rod (31) is driven to rotate intermittently through the intermittent transmission mechanism; an adjusting assembly arranged on the fixed plate (2) and connected with the intermittent transmission mechanism, the adjusting assembly can adjust the rotating speed of the supporting rod (31) and the guide wheel (32) through the intermittent transmission mechanism; the horizontal translation mechanism comprises transmission rods (5) rotatably installed on the cross plate (3) and symmetrically arranged, one of the transmission rods (5) is connected with the output shaft of a motor (4) fixedly installed on the cross plate (3), a belt pulley is fixed at the end of the transmission rod (5) away from the cross plate (3), a conveyor belt (6) is sleeved on the belt pulley, a protrusion (7) is fixed on the conveyor belt (6), a guide assembly connected with the protrusion (7) is arranged on the fixed plate (2), and the guide assembly is connected with the cutting disc (13); the trigger transmission mechanism comprises a fixed ring (14) fixedly installed on the transmission rod (5), an active disc (15) abutting against the fixed ring (14) is movably installed on the transmission rod (5), and a limiting wheel (8) matched with the active disc (15) is fixed on the conveyor belt (6); further comprising a second limiting rod fixedly installed on the transmission rod (5), a second limiting groove engaged with the second limiting rod is formed in the inner wall of the active disc (15), and a limiting assembly connected with the active disc (15) is arranged on the cross plate (3).

2. A cut-to-length machine for seamless steel pipe after rolling and forming according to claim 1, characterized in that, the guide assembly comprises a guide rod (9) fixedly installed on the fixed plate (2), a guide sleeve (10) movably installed on the guide rod (9), the guide sleeve (10) is fixedly connected with the cutting disc (13), an active plate (11) is fixed on the side wall of the guide sleeve (10), and a clamping groove (12) slidably connected with the protrusion (7) is formed in the active plate (11); further comprising a first limiting rod fixedly installed on the guide rod (9), and a first limiting groove engaged with the first limiting rod is formed in the inner wall of the guide sleeve (10).

3. A cut-to-length machine for seamless pipe after rolling and forming, according to claim 1, characterized in that, The limiting assembly comprises a rotating sleeve (17) rotatably installed on the horizontal plate (3) and sleeved on the transmission rod (5), and a following tooth (18) is fixed on the rotating sleeve (17); a limiting tooth (16) matched with the following tooth (18) is fixed on the movable disc (15). A spring (19) sleeved on the transmission rod (5) and abutting against the movable disc (15) is further included.

4. A cut-to-length machine for seamless pipe after rolling and forming according to claim 3, characterized in that, The intermittent transmission mechanism comprises a rotating rod (21) rotatably installed on the base (1), a second belt (30) rotatably connected with the supporting rod (31) is sleeved on the rotating rod (21), and a rotating assembly connected with the rotating sleeve (17) and the adjusting assembly is arranged on the rotating rod (21).

5. A cut-to-length machine for seamless pipe after rolling and forming according to claim 4, characterized in that, The rotating assembly comprises a fixed cone disc (22) fixedly installed on the rotating rod (21), a movable sleeve (24) movably installed on the rotating rod (21), the movable sleeve (24) being connected with the adjusting assembly, a movable cone disc (25) fixedly installed on the movable sleeve (24), and sliding structures connected with the rotating sleeve (17) arranged on the movable cone disc (25) and the fixed cone disc (22).

6. A cut-to-length machine for seamless pipe after rolling and forming according to claim 5, characterized in that, The sliding structure comprises a plurality of grooves (23) circumferentially and equidistantly arranged on the fixed cone disc (22) and the movable cone disc (25), respectively, and a sliding rod (26) slidably installed in the groove (23), an arc-shaped plate (27) fixed on the sliding rod (26), and a first belt (20) rotatably connected with the rotating sleeve (17) sleeved on the arc-shaped plate (27).

7. A cut-to-length machine for seamless pipe after rolling and forming according to claim 5, characterized in that, The adjusting assembly comprises a gas cylinder (28) fixedly installed on the fixed plate (2), and a connecting plate (29) fixed on an output shaft of the gas cylinder (28), the connecting plate (29) being rotatably connected with the movable sleeve (24).

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