A pipe rotary sawing device

Abstract

The present invention discloses a pipe rotary sawing device, comprising a machine base, characterized in that: a rotary clamp assembly for clamping the pipe for rotating around its own center is installed on the machine base, an automatic feeding device for longitudinally feeding the pipe into the rotary clamp assembly is installed on the machine base at the upstream of the rotary clamp assembly, a sawing head driven by a feeding power device is installed on the machine base at one side of the rotary clamp assembly for transverse sliding, and a material receiving device for receiving the sawed material is also provided on the machine base, and the material receiving device cooperates with the rotary clamp assembly. The device can automatically feed the pipe, speed up the sawing speed, reduce the wear of the sawing head when sawing the pipe, and can also automatically receive the sawed material, so as to automate the pipe sawing, save production costs, and improve the production accuracy and efficiency of the device.

Description

Technical Field

[0001] The invention relates to a sawing device, in particular to a pipe rotary sawing device. Background Art

[0002] As a mechanical device for sawing materials, sawing machines are widely used in the field of pipe production. Sawing machines can not only improve the efficiency of sawing materials, but also effectively avoid material damage. When sawing pipes, they need to be clamped at both ends, leaving a gap in the middle for the sawing head to cut the pipe from the gap. This requires the blade radius to be larger than the pipe diameter, and the blade wear is also very large. In the process of feeding pipes, there will always be a section of pipe left at the end. Due to the limitations of the device, the remaining pipes cannot be fed and sawed, resulting in waste. At present, there is no device that can automatically feed pipes, speed up the sawing speed, reduce the wear of the sawing head when sawing pipes, and automatically receive the sawed materials. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pipe rotary sawing device, which can automatically load the pipe, speed up the sawing speed, reduce the wear of the sawing head when sawing the pipe, and can also automatically receive the sawed material, so as to automate the pipe sawing, save production costs, and improve the production accuracy and efficiency of the device.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a pipe rotary sawing device, including a machine base, on which is installed a rotary clamp assembly for clamping the pipe and rotating around its own center, an automatic feeding device for longitudinally feeding the pipe into the rotary clamp assembly is installed on the machine base upstream of the rotary clamp assembly, a sawing head driven by a feeding power device is installed on one side of the rotary clamp assembly on the machine base for transverse sliding, and a material receiving device for receiving the sawed material is also provided on the machine base, and the material receiving device cooperates with the rotary clamp assembly.

[0005] As a preferred solution, the automatic feeding device includes a feeding frame located on one side of the machine base, a longitudinal slide driven by a longitudinal power device is longitudinally slidably installed on the feeding frame, a feeding clamp assembly driven by a clamping power device is transversely slidably installed on the longitudinal slide, a column is also provided on the longitudinal slide, a lifting seat driven by a lifting power device is installed on the column, a longitudinal push rod inserted into the pipe hole is fixed on the lifting seat, a driving channel is provided inside the longitudinal push rod, a plurality of tightening blocks are radially slidably installed on the free end of the longitudinal push rod, and the driving channel on the longitudinal push rod is connected to the driving air path for driving the radial extension and contraction of the tightening block.

[0006] As a preferred solution, an auxiliary support structure for supporting the pipe is also provided on the longitudinal slide upstream of the feeding clamp assembly, the auxiliary support structure includes a mounting support and a roller frame mounted on the mounting support for lifting and lowering, an auxiliary support roller is rotatably mounted on the roller frame, and a height adjustment mechanism for adjusting the height of the roller frame is installed on the mounting support.

[0007] As a preferred solution, the mounting support includes two guide columns fixed on the longitudinal slide, the upper ends of the guide columns are provided with mounting plates, the two ends of the roller frame are slidably mounted on the guide columns, and the height adjustment mechanism includes an adjusting screw rotatably mounted on the mounting plate, and the threaded section of the adjusting screw is threadedly connected to the roller frame.

[0008] As a preferred solution, the longitudinal push rod includes a push rod body fixed on the lifting seat, the drive channel is arranged inside the push rod body, the push rod body is provided with a connecting hole convenient for connection with the drive air circuit, the end of the push rod body is threadedly connected with a connecting head, a drive chamber connected to the drive channel is arranged in the connecting head, at least two evenly distributed radial mounting holes connected to the drive chamber are arranged on the connecting head, the clamping block is radially slidably installed in the radial mounting hole, and the clamping block and the radial mounting hole are sealed and matched.

[0009] As a preferred solution, the material receiving device includes a finished product receiving device and a tail material receiving device. A material drop-out port is provided on the machine base at the downstream side of the rotating clamp assembly, and the tail material receiving device is provided below the material drop-out port for receiving the output tail material; the finished product receiving device includes a material receiving chute slidably mounted on the machine base, and the material receiving chute is driven by a material receiving power device to slide between a material receiving station and an avoidance station.

[0010] As a preferred solution, a plurality of material receiving guide rods are arranged on the material receiving chute, and gaps are formed between the material receiving guide rods to facilitate the falling of metal chips.

[0011] As a preferred solution, the rotary clamp assembly includes a clamp seat fixed on a machine base, a rotary clamp is rotatably mounted on the clamp seat, and a rotary power device for driving the rotary clamp to rotate is mounted on the clamp seat.

[0012] As a preferred solution, the tailing material receiving device includes a material drop hopper located inside the machine base and below the material drop opening, and a tailing material conveyor belt is provided below the material drop hopper.

[0013] After adopting the above technical scheme, the effect of the present invention is as follows: since the pipe rotary sawing device includes a machine base, a rotary clamp assembly for clamping the pipe and rotating around its own center is installed on the machine base, an automatic feeding device for longitudinally feeding the pipe into the rotary clamp assembly is installed on the machine base at the upstream of the rotary clamp assembly, a sawing head driven by a feeding power device is installed on one side of the rotary clamp assembly on the machine base for transverse sliding, and a receiving device for receiving the sawed material is also provided on the machine base, and the receiving device cooperates with the rotary clamp assembly. The pipe is fed longitudinally into the rotating clamp assembly through the automatic feeding device, and then the rotating clamp assembly clamps the pipe and rotates around its own center and cooperates with the sawing head to saw. In this way, the sawing process is accelerated and the sawing depth of the sawing head only needs to be the thickness of the pipe wall to cut, and the sawing head wears less. After the sawing is completed, the material receiving device is used. The device can automatically feed the pipe, speed up the sawing speed, reduce the wear of the sawing head when sawing the pipe, and can also automatically receive the sawed material, so that the pipe sawing is automated, the production cost is saved, and the production accuracy and efficiency of the device are improved.

[0014] Furthermore, the automatic feeding device comprises a feeding frame located on one side of the machine base, a longitudinal slide driven by a longitudinal power device is longitudinally slidably mounted on the feeding frame, a feeding clamp assembly driven by a clamping power device is transversely slidably mounted on the longitudinal slide, a column is further arranged on the longitudinal slide, a lifting seat driven by a lifting power device is mounted on the column, a longitudinal push rod inserted into the pipe hole is fixed on the lifting seat, a driving channel is arranged inside the longitudinal push rod, and a plurality of tightening blocks are radially slidably mounted on the free end of the longitudinal push rod. The driving channel on the longitudinal push rod is connected to the driving air path to drive the radial contraction of the tightening block, and the longitudinal slide drives the column to move longitudinally. The lifting power device controls the lifting of the longitudinal push rod, so that the longitudinal push rod can enter the pipe in the longitudinal direction. The ventilation in the driving channel makes the tightening block slide radially and contact the inner wall of the pipe to tighten. The longitudinal slide moves longitudinally to feed and saw the pipe. The automatic feeding device can help the rotary sawing machine to feed the pipe, and also enables part of the tail section of the pipe to be sawed, which effectively helps the rotary sawing device to feed, save resources and improve efficiency.

[0015] Furthermore, since an auxiliary support structure for supporting the pipe is provided on the longitudinal slide upstream of the feeding clamp assembly, the auxiliary support structure includes a mounting support and a roller frame mounted on the mounting support for lifting and lowering, an auxiliary support roller is rotatably mounted on the roller frame, and a height adjustment mechanism for adjusting the height of the roller frame is installed on the mounting support to help the longitudinal slide to play a supporting role and ensure smooth pipe transportation. The installation of the height adjustment mechanism can adapt to pipes of various diameters and make them coaxial with the center of the rotating clamp assembly during the feeding process.

[0016] Furthermore, since the mounting support includes two guide columns fixed on the longitudinal slide, the upper ends of the guide columns are provided with mounting plates, the two ends of the roller frame are slidably mounted on the guide columns, and the height adjustment mechanism includes an adjusting screw rotatably mounted on the mounting plate, and the threaded section of the adjusting screw is threadedly connected to the roller frame. The threaded connection makes the height adjustment mechanism simple in structure, reliable in connection, and easy to assemble and disassemble.

[0017] Furthermore, since the longitudinal push rod includes a push rod body fixed on the lifting seat, the drive channel is arranged inside the push rod body, and the push rod body is provided with a connecting hole that is convenient for connecting with the driving air circuit. The end of the push rod body is threadedly connected with a connecting head, and a driving chamber connected to the driving channel is arranged in the connecting head. At least two radial mounting holes that are evenly distributed and connected to the driving chamber are arranged on the connecting head. The clamping block is radially slidably installed in the radial mounting hole, and the clamping block and the radial mounting hole are sealed. After the driving air circuit is ventilated, the clamping block in the connecting head is radially extended. Due to the sealing, the clamping block and the pipe are firmly fitted. At the same time, since the connecting head is threadedly connected to the push rod body, connecting heads of different sizes can be replaced to suit the automatic feeding of pipes with different inner hole diameters. In addition, the push rod body and the connecting head are manufactured separately, and the processing difficulty is lower.

[0018] Since the material receiving device includes a finished product receiving device and a tail material receiving device, a drop-out port is provided on the machine base at the downstream side of the rotating clamp assembly, and the tail material receiving device is provided below the drop-out port for receiving the output tail materials; the finished product receiving device includes a material receiving chute slidably mounted on the machine base, and the material receiving chute is driven by a material receiving power device to slide between a material receiving station and an avoidance station, thereby clearly classifying finished products and tail materials, facilitating the collection of items and improving efficiency.

[0019] Furthermore, since a plurality of material receiving guide rods are arranged on the material receiving chute, gaps are formed between the material receiving guide rods for convenient falling of metal chips, so that metal chips on the sawn pipes fall from the gaps. In this way, the metal chips fall from the gaps without causing wear on the surface of the pipes. Moreover, since the material receiving chute is composed of a plurality of material receiving guide rods, the contact area with the pipes can be reduced, friction can be reduced, and movement of the pipes can be facilitated.

[0020] Furthermore, since the tailing material receiving device includes a material dropping hopper located inside the machine base and below the material dropping opening, a tailing material conveyor belt is provided below the material dropping hopper to facilitate the collection of tailing materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 is a stereogram of an embodiment of the present invention;

[0023] Figure 2 is a three-dimensional diagram of an automatic feeding device according to an embodiment of the present invention;

[0024] Figure 3 is a top view of an embodiment of the present invention;

[0025] Figure 4 is a three-dimensional diagram of a finished product receiving device according to an embodiment of the present invention;

[0026] In the figure: 1. Machine base; 2. Servo motor; 3. Clamp seat; 4. Rotating clamp; 5. Saw head; 6. Finished product receiving device; 61. Single-axis cylinder; 62. Receiver chute; 63. Receiver guide rod; 7. Receiver station; 8. Avoidance station; 9. Tail material receiving device; 91. Dropping port; 92. Dropping hopper; 93. Tail material conveyor belt; 10. Feeding frame; 11. Linear module; 12. Longitudinal slide; 13. Column; 14. Single head Cylinder; 15. Lifting seat; 16. Longitudinal push rod; 161. Connecting hole; 162. Driving channel; 163. Connecting head; 164. Driving chamber; 165. Tightening block; 17. Mounting support; 171. Mounting plate; 172. Guide column; 173. Adjusting screw; 18. Roller frame; 181. Auxiliary support roller; 19. Double-headed cylinder; 20. Feeding clamp assembly; 21. First travel switch; 22. Second travel switch. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below through specific examples.

[0028] like Figures 1 to 3As shown, a pipe rotary sawing device comprises a machine base 1, on which a rotary clamp assembly for clamping the pipe to rotate around its own center is installed, on which an automatic feeding device for longitudinally feeding the pipe into the rotary clamp assembly is installed upstream of the rotary clamp assembly on the machine base 1, and a sawing head 5 driven by a feeding power device is installed transversely and slidably on one side of the rotary clamp assembly on the machine base 1, and a receiving device for receiving the sawed material is also provided on the machine base 1, and the receiving device cooperates with the rotary clamp assembly. In this embodiment, the sawing head 5 is partly of the existing structure, and a continuously variable speed motor can be used to control the sawing head 5. For feeding, a screw nut mechanism is used to move the sawing head 5 horizontally, and the pipe is fed longitudinally into the rotating clamp assembly through an automatic feeding device. The rotating clamp assembly then clamps the pipe and rotates around its own center and cooperates with the sawing head 5 to saw. In this way, the sawing process is accelerated and the sawing depth of the sawing head only needs to be the thickness of the pipe wall to cut, and the sawing head 5 has less wear. After the sawing is completed, the material receiving device is used. The device can automatically feed the pipe, speed up the sawing speed, reduce the wear of the sawing head 5 when sawing the pipe, and can also automatically receive the sawed material, so that the pipe sawing is automated, production costs are saved, and the production accuracy and efficiency of the device are improved.

[0029] In this embodiment, the automatic feeding device includes a feeding frame 10 located on one side of the machine base 1, a longitudinal slide 12 driven by a longitudinal power device is longitudinally slidably installed on the feeding frame 10, a feeding clamp assembly 20 driven by a clamping power device is transversely slidably installed on the longitudinal slide 12, a column 13 is also provided on the longitudinal slide 12, a lifting seat 15 driven by a lifting power device is installed on the column 13, a longitudinal push rod 16 inserted into the pipe hole is fixed on the lifting seat 15, and a driving channel is provided inside the longitudinal push rod 16 162, a plurality of tightening blocks 165 are radially slidably mounted on the free end of the longitudinal push rod 16, the driving channel 162 on the longitudinal push rod 16 is connected to the driving air circuit for driving the radial expansion and contraction of the tightening block 165, and the feeding frame 10 is also equipped with a first stroke switch 21 and a second stroke switch 22 for limiting the sliding position of the longitudinal slide 12, the first stroke switch 21 is located on the longitudinal slide 12 away from the limit position of the rotating clamp assembly, and the second stroke switch 22 is located on the longitudinal slide 12 close to the limit position of the rotating clamp assembly. The power device is a linear module 11, which drives the feeding clamp assembly 20 on the longitudinal slide 12. The clamping power device includes a double-headed cylinder, and the clamping and loosening of the feeding clamp assembly 20 are controlled by the extension and contraction of the two ends of the double-headed cylinder, so that the longitudinal movement of the pipe can be driven. The lifting power device includes a single-headed cylinder 14, which can drive the longitudinal push rod 16 to rise and fall. When the pipe is cut to a length that the feeding clamp assembly 20 cannot clamp the feeding, the linear module 11 drives the column 13 on the longitudinal slide 12 to the first stroke. 21 switch position is moved, when the free end of the longitudinal push rod 16 on the column 13 is above the tail position of the pipe, the single-head cylinder 14 drives the longitudinal push rod 16 to descend, so that the longitudinal push rod 16 is aligned with the pipe hole, and then inserted into the pipe hole, and the support block 165 is contacted and tightened with the inner wall of the pipe hole through the driving channel 162, and the pipe can continue to be fed through the friction force to complete the sawing. The automatic feeding device can help the pipe rotary sawing machine to load materials, and also enable a part of the tail section of the pipe to be sawed, effectively improving the defects of the rotary sawing machine, saving resources and improving efficiency.

[0030] like Figure 3As shown, an auxiliary support structure for supporting the pipe is also provided on the longitudinal slide 12 upstream of the feeding clamp assembly 20, and the auxiliary support structure includes a mounting support 17 and a roller frame installed on the mounting support 17 for lifting and lowering, an auxiliary support roller is rotatably installed on the roller frame, and a height adjustment mechanism for adjusting the height of the roller frame 18 is installed on the mounting support 17, and the mounting support 17 includes two guide columns 172 fixed on the longitudinal slide 12, and the upper ends of the guide columns 172 are each provided with a mounting plate 171, and the two ends of the roller frame are slidably sleeved on the guide columns 172, and the roller frame is provided with a height adjustment mechanism for adjusting the height of the roller frame 18. The height adjustment mechanism includes an adjustment screw rotatably mounted on the mounting plate 171, and the threaded section of the adjustment screw is threadedly connected to the roller frame. By setting an auxiliary support structure, the feeding clamp assembly 20 plays a supporting role when not clamping the pipe, preventing the pipe from bending due to excessive length during sawing, and the auxiliary support structure includes a roller frame, on which an auxiliary support roller is rotatably mounted, so that when the pipe is driven, the support roller can also rotate, which can effectively reduce friction and make feeding smooth. The support roller can be adjusted in height through a threaded connection, so that pipes of different diameters can be ensured to be coaxial with the rotating clamp assembly when clamped. .

[0031] The longitudinal push rod 16 includes a push rod body fixed on the lifting seat 15, the driving channel 162 is arranged inside the push rod body, and the push rod body is provided with a connecting hole 161 that is convenient for connecting with the driving gas circuit, and the end of the push rod body is threadedly connected with a connecting head 163, and a driving chamber 164 connected to the driving channel 162 is arranged in the connecting head 163, and at least two radial mounting holes evenly distributed and connected to the driving chamber 164 are arranged on the connecting head 163, and the tightening block 165 is radially slidably installed in the radial mounting hole, and the tightening block 165 and the radial mounting hole are sealed and matched. Through the sealing cooperation, the tightening block 165 can be effectively fitted with the inner wall of the pipe hole, so that there can be enough friction to drive the pipe feeding, and at the same time, because the connecting head 163 is threadedly connected to the push rod body, it can be suitable for the automatic feeding of pipes with different inner hole diameters by replacing the connecting head 163 of different sizes, and the push rod body and the connecting head 163 are made separately, and the processing difficulty is lower.

[0032] like Figure 1 and Figure 3As shown, the material receiving device includes a finished product receiving device 6 and a tailing material receiving device 9. A material drop opening 91 is provided on the machine base 1 at the downstream side of the rotating clamp assembly. The tailing material receiving device 9 is provided below the material drop opening 91 for receiving the output tailings. The tailing material receiving device 9 includes a material drop hopper 92 located inside the machine base 1 and below the material drop opening 91. A tailing material conveyor belt 93 is provided below the material drop hopper 92. The tailings are all dropped onto the tailing material conveyor belt 93 through the material drop hopper 92, which facilitates the collection of the tailings. The finished product receiving device 6 includes a material receiving chute 62 slidably mounted on the machine base 1, as shown in FIG. Figure 4 As shown, a plurality of material receiving guide rods 63 are arranged on the material receiving chute 62, and gaps are formed between the material receiving guide rods 63 to facilitate the falling of metal chips, so that the metal chips on the sawn pipe fall from the gaps, so that the metal chips fall from the gaps without causing wear on the surface of the pipe, and the material receiving chute 62 is a plurality of material receiving guide rods 63, which can reduce the contact area with the pipe, reduce friction, and facilitate the movement of the pipe; the material receiving chute 62 is driven by a material receiving power device to slide between the material receiving station 7 and the avoidance station 8, and the material receiving power device includes a single-axis cylinder 61, and the material receiving station 7 is located at the position where the material receiving chute 62 is below the rotating clamp assembly, and the avoidance station 8 is located at the position where the material receiving chute 62 is away from the rotating clamp assembly, and the material receiving chute 62 can be controlled to receive the required finished products by extending and retracting the guide rod of the single-axis cylinder 61, so that the device is automated and the efficiency is improved.

[0033] In this embodiment, the rotary clamp assembly includes a clamp seat 3 fixed on the machine base 1, a rotary clamp 4 is rotatably mounted on the clamp seat 3, a rotary power device for driving the rotary clamp 4 to rotate is mounted on the clamp seat 3, and the rotary power device includes a servo motor 2.

[0034] The working principle of the present invention is as follows: first, when the rotary sawing machine is working, a single pipe is loaded through the automatic feeding device, and the linear module 11 drives the longitudinal slide 12 to move to the first stroke 21 switch. The longitudinal slide 12 has an auxiliary support structure, so that during the movement, the pipe can be supported and the placement height of the pipe can be adjusted. Then the feeding clamp assembly 20 starts to work, and the double-headed cylinder contracts to make the feeding clamp assembly 20 clamp the pipe, and then the linear module 11 drives the longitudinal slide 12 to move to the second stroke switch 22, so that the clamp The held pipe moves with the longitudinal slide 12, and the pipe is then longitudinally fed into the rotary clamp assembly, the feeding clamp assembly is loosened, and the rotary clamp assembly clamps the pipe and rotates around its own center. At the same time, the sawing head 5 is driven to rotate by the stepless speed motor, and then approaches the pipe through the transverse slide to perform sawing. After the sawing is completed, the material is received by the receiving device, and the single-axis cylinder 61 pushes the receiving chute 62 to move to the receiving station 7 for finished product receiving. Then the longitudinal slide 12 repeats the above steps and continues to drive the pipe to be fed until the remaining length of the pipe is reached. When the clamp assembly cannot continue to feed, the longitudinal push rod 16 is used. The linear module 11 also drives the longitudinal slide 12 to move the longitudinal push rod 16 on the column 13 to the first switch stroke position. The single-head cylinder 14 lowers the longitudinal push rod 16 through the lifting seat 15. When the longitudinal push rod 16 is coaxial with the center of the pipe hole, the linear module 11 drives the longitudinal slide 12 to move upstream, so that the longitudinal push rod 16 is inserted into the pipe hole, and then the air intake from the connecting hole 161 enters the drive channel 162 into the drive chamber 164 to make the tightening block 165 and the pipe. The inner hole is fitted and tightened to control the feeding of the pipe. After it extends out to a sufficient length on the rotating clamp assembly, the tightening block 165 is loosened and rotated by the rotating clamp assembly. The sawing head 5 continues to be driven by the stepless speed motor to saw. Then the finished product is connected until the length of the pipe is lower than the finished product length, and it becomes tail material. The material receiving chute 62 returns to the avoidance station 8, and the tail material conveyor belt 93 under the drop hopper 92 is pushed out from the rotating clamp assembly by the longitudinal push rod 16 for collecting the tail material. Then the beginning steps are repeated to load new pipes for sawing.

[0035] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A pipe rotary sawing device, comprising a base, characterized in that: The machine base is provided with a rotating clamp assembly for clamping the pipe and rotating around its own center. An automatic feeding device for longitudinally feeding the pipe into the rotating clamp assembly is installed on the machine base upstream of the rotating clamp assembly. A sawing head driven by a feeding power device is installed on one side of the rotating clamp assembly on the machine base for transverse sliding. A receiving device for receiving the sawed material is also provided on the machine base, and the receiving device cooperates with the rotating clamp assembly. The automatic feeding device comprises a feeding frame located at one side of the machine base, a longitudinal slide driven by a longitudinal power device is longitudinally slidably mounted on the feeding frame, a feeding clamp assembly driven by a clamping power device is transversely slidably mounted on the longitudinal slide, a column is further arranged on the longitudinal slide, a lifting seat driven by a lifting power device is mounted on the column, a longitudinal push rod inserted into the pipe hole is fixed on the lifting seat, a driving channel is arranged inside the longitudinal push rod, a plurality of tightening blocks are radially slidably mounted on the free end of the longitudinal push rod, the driving channel on the longitudinal push rod is connected with the driving air path for driving the radial extension and contraction of the tightening block, An auxiliary support structure for supporting the pipe is also arranged on the longitudinal slide and located upstream of the feeding clamp assembly. The auxiliary support structure includes a mounting support and a roller frame which is lifted and mounted on the mounting support. An auxiliary support roller is rotatably mounted on the roller frame. A height adjustment mechanism for adjusting the height of the roller frame is installed on the mounting support. The mounting support includes two guide columns fixed on the longitudinal slide, the upper ends of the guide columns are provided with mounting plates, the two ends of the roller frame are slidably sleeved on the guide columns, the height adjustment mechanism includes an adjusting screw rotatably mounted on the mounting plate, the threaded section of the adjusting screw is threadedly connected to the roller frame, The longitudinal push rod includes a push rod body fixed on the lifting seat, the drive channel is arranged inside the push rod body, the push rod body is provided with a connecting hole convenient for connecting with the drive air circuit, the end of the push rod body is threadedly connected with a connecting head, a drive chamber connected with the drive channel is arranged in the connecting head, at least two evenly distributed radial mounting holes connected with the drive chamber are arranged on the connecting head, the tightening block is radially slidably installed in the radial mounting hole, and the tightening block and the radial mounting hole are sealed.

2. A pipe rotary sawing device according to claim 1, characterized in that: The material receiving device includes a finished product receiving device and a tail material receiving device. A material drop-out port is provided on the machine base at the downstream side of the rotating clamp assembly. The tail material receiving device is provided below the material drop-out port for receiving the output tail material. The finished product receiving device includes a material receiving chute slidably mounted on the machine base. The material receiving chute is driven by a material receiving power device to slide between a material receiving station and an avoidance station.

3. A pipe rotary sawing device as claimed in claim 2, characterized in that: A plurality of material receiving guide rods are arranged on the material receiving chute, and gaps are formed between the material receiving guide rods to facilitate the falling of metal chips.

4. A pipe rotary sawing device as claimed in claim 3, characterized in that: The rotary clamp assembly comprises a clamp seat fixed on a machine base, a rotary clamp is rotatably mounted on the clamp seat, and a rotary power device for driving the rotary clamp to rotate is mounted on the clamp seat.

5. A pipe rotary sawing device as claimed in claim 4, characterized in that: The tailing material receiving device comprises a material dropping hopper which is located inside the machine base and below the material dropping opening, and a tailing material conveyor belt is arranged below the material dropping hopper.

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