Continuous automatic traction machine for PVC (polyvinyl chloride) pipeline processing

Abstract

The invention relates to the technical field of PVC (polyvinyl chloride) pipeline traction, in particular to a continuous automatic traction machine for PVC pipeline processing, which comprises a base, a traction cylinder is fixed in the base, a fixed seat is arranged on one side of the base, two rotating rollers are rotatably connected in the fixed seat, and two protective plates are symmetrically fixed at the front and rear ends of the upper surface of the fixed seat. A second gear rotationally connected to the side face of the base is fixed to one side of the rotating roller. The PVC pipeline is stably dragged through the stable traction mechanism, it is guaranteed that the PVC pipeline does not deviate during traction, the PVC pipeline is protected through cooperation with the anti-shaking assembly, the situation that damage is caused by repeated collision between the PVC pipeline and the auxiliary roller during shaking is avoided, meanwhile, the PVC pipeline is polished through the polishing and lubricating assembly, and the polishing efficiency is improved. And meanwhile, lubricating oil is smeared on the PVC pipeline, so that follow-up traction is assisted, the friction force between the PVC pipeline and the traction roller is reduced, and abrasion to the PVC pipeline in the traction process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of PVC pipe pulling, in particular to a continuous automatic pulling machine for PVC pipe processing. Background Art

[0002] PVC, or polyvinyl chloride, is an important plastic material. It is widely used in many fields such as construction, agriculture, home and industry due to its excellent physical and chemical properties, such as corrosion resistance, high compressive strength and light weight. In the production process of PVC pipes, the traction device is a necessary auxiliary equipment for the continuous extrusion of plastic pipes. Its main function is to provide a certain traction force and traction speed for the initially shaped pipe coming out of the machine head, so as to overcome the friction generated during the cooling and shaping process, so that the plastic pipe can be led out of the cooling and shaping device at a uniform speed. The design of the traction device needs to meet a variety of requirements, such as the clamp can adapt to the needs of clamping pipes of various diameters, the traction speed can be changed steplessly and smoothly within a certain range, etc.

[0003] In the prior art, the PVC pipe traction device usually adopts a double-track traction structure during the traction process of the PVC pipe, which is easy to cause excessive squeezing of the pipe during the traction process, and the stability of the pipe traction cannot be guaranteed, resulting in deviation or excessive wear of the pipe. At the same time, the friction between the pipe and the traction device is too large during the traction process, causing the pipe surface to wear, thereby reducing the pipe yield;

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a continuous automatic traction machine for PVC pipe processing, which stably pulls the PVC pipe through a stable traction mechanism to prevent it from deflecting, and cooperates with an anti-shake component to protect the PVC pipe. At the same time, it cooperates with a polishing and lubrication component to polish and lubricate the PVC pipe to avoid excessive wear due to large friction during the traction process, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a continuous automatic traction machine for PVC pipe processing, comprising a base, a traction cylinder is fixed inside the base, and a fixed seat is arranged on one side of the base, two rotating rollers are rotatably connected inside the fixed seat, and two protective plates are symmetrically fixed at the front and rear ends of the upper surface of the fixed seat, a second gear rotatably connected to the side of the base is fixed on one side of the rotating roller, a stable traction mechanism is installed between the base and the second gear, and a motor is fixed on one side of one of the rotating rollers;

[0007] One side of the traction cylinder is rotatably connected to a gear ring meshing with two second gears, and a fixed box is fixed to the top of the traction cylinder, one side of the fixed box is rotatably connected to a first gear meshing with the gear ring, and a liquid storage tank is fixed to the top of the fixed box, and a polishing and lubrication assembly is installed between the first gear and the fixed box.

[0008] Furthermore, the stable traction mechanism includes two rotating shafts symmetrically connected to the front and rear ends of the base, one side of the rotating shaft passes through and extends to the outside of the base and is fixed to the second gear, and a plurality of worms are equidistantly sleeved on the outer layer of the rotating shaft, and a worm wheel rotatably connected to the inside of the base is meshed above the worm, and a traction roller is fixed between the two worm wheels on the same axis.

[0009] Furthermore, a fourth gear is fixed to one end of the worm gear, and a third gear is meshed on one side of the fourth gear and rotatably connected to the inside of the base. A bidirectional screw is fixed between the two third gears in the same axial direction, and two screw sleeves are symmetrically sleeved on the front and rear ends of the outer layer of the bidirectional screw shaft, and two second friction plates are symmetrically fixed on the outer layer of the screw sleeve, and a sleeve is sleeved on the outer layer of the screw sleeve, and a first friction plate is fixed to the inside of the sleeve at the position corresponding to the screw sleeve, and two sets of limit blocks are symmetrically fixed on the front and rear ends of the inner layer of the sleeve.

[0010] Furthermore, an installation box is fixed to the top of the sleeve, an auxiliary roller is rotatably connected inside the installation box, and an anti-shake assembly is installed between one end surface of the installation box and the inside of the base, and the anti-shake assembly includes two sliding sleeves symmetrically fixed at the front and rear ends of the base, and the interior of the sliding sleeve is provided with buffer chambers and oil storage tanks layer by layer from the inside to the outside, a piston is slidably connected inside the buffer chamber, and a plurality of connecting holes connected to the oil storage tank are equidistantly provided at the bottom of the buffer chamber.

[0011] Furthermore, a fixing rod penetrating through and extending to the outside of the sliding sleeve is fixed to the top of the piston, one end of the fixing rod is fixed to the mounting box, and the outer layer of the fixing rod is sleeved with a spring fixed to the sliding sleeve.

[0012] Furthermore, the polishing and lubrication assembly includes a grinding wheel rotatably connected to the interior of the fixed box, one side of the grinding wheel is fixed to the first gear, and the other side of the grinding wheel is fixed with a reciprocating screw rotatably connected to the interior of the fixed box.

[0013] Furthermore, the outer layer of the reciprocating screw rod is sleeved with a moving block, the top end of the moving block penetrates and extends to the top layer of the fixed box where a moving plate is fixed, and a slide groove is provided inside the top layer of the fixed box at a position corresponding to the moving plate.

[0014] Furthermore, a plurality of groups of through holes are equidistantly formed on the inner bottom layer of the liquid storage tank, and matching docking holes are formed at positions corresponding to the through holes inside the movable plate.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The present invention is provided with a stable traction mechanism, which drives two rotating rollers to rotate through a motor, thereby driving the PVC pipe to rotate, and uses the second gear to cooperate with the rotating shaft and the worm gear to drive the traction roller to rotate, thereby forming a traction effect, and the rotation of the worm gear cooperates with the third gear and the fourth gear to drive the bidirectional screw to rotate, thereby driving the auxiliary roller to move and stick to the surface of the PVC pipe, thereby forming a stable traction, ensuring that the PVC pipe will not deviate during the traction process;

[0017] 2. The present invention is provided with an anti-shake component. During the traction process, when the PVC pipe shakes and hits the auxiliary roller, the installation box drives the fixed rod to move inside the sliding sleeve. During the movement, the spring rebounds to form a buffer. At the same time, the piston moves and is buffered by the hydraulic oil. This reduces the shaking of the installation box during movement, thereby avoiding repeated collisions between the auxiliary roller and the PVC pipe, which may cause damage to the PVC pipe.

[0018] 3. The present invention is provided with a grinding and lubrication component. During traction, the second gear cooperates with the gear ring to drive the first gear to rotate. The rotation of the first gear drives the grinding wheel and the reciprocating screw to rotate. The rotation of the reciprocating screw cooperates with the moving block to drive the moving plate to move back and forth. During the reciprocating movement of the moving plate, the through hole and the docking hole repeatedly overlap, and then the lubricating oil leaks out through the through hole and the docking hole and is smeared on the surface of the grinding wheel, thereby lubricating the PVC pipe during the grinding process to reduce friction. At the same time, the lubricating oil is smeared on the surface of the PVC pipe to reduce the friction generated during subsequent traction.

[0019] In summary, the present invention uses a stable traction mechanism to stably pull the PVC pipe to ensure that the PVC pipe will not deviate during traction, and cooperates with the anti-shake component to protect the PVC pipe to avoid repeated collisions between the PVC pipe and the auxiliary roller when shaking occurs, causing damage. At the same time, the PVC pipe is polished by the polishing and lubrication component, and lubricating oil is applied to the PVC pipe to assist subsequent traction, reduce the friction between the PVC pipe and the traction roller, and reduce the wear of the PVC pipe during traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure inside the base and the fixing box of the present invention;

[0022] Figure 3It is a structural schematic diagram of the stable traction mechanism of the present invention;

[0023] Figure 4 It is a combined view of the screw sleeve and the sleeve of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the anti-shake component of the present invention;

[0025] Figure 6 It is a combined view of the mounting box and the anti-shake assembly of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the polishing and lubrication assembly of the present invention.

[0027] Figure numerals: 1, base; 2, traction cylinder; 3, gear ring; 4, protective plate; 5, fixed seat; 6, motor; 7, first gear; 8, liquid storage tank; 9, fixed box; 10, grinding and lubrication assembly; 11, stable traction mechanism; 12, second gear; 13, third gear; 14, rotating shaft; 15, worm; 16, anti-shake assembly; 17, fourth gear; 18, worm wheel; 19, bidirectional screw; 20, traction roller; 21, installation box ; 22. Auxiliary roller; 23. Fixed rod; 24. Spring; 25. Piston; 26. Connecting hole; 27. Oil storage tank; 28. Buffer chamber; 29. ​​Sliding sleeve; 30. Sleeve; 31. Screw sleeve; 32. Limit block; 33. First friction plate; 34. Second friction plate; 35. Slide groove; 36. Through hole; 37. Moving plate; 38. Docking hole; 39. Grinding wheel; 40. Moving block; 41. Reciprocating screw; 42. Rotating roller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] This embodiment aims to address the problem that the PVC pipe traction device in the prior art usually adopts a double-track traction structure during the traction process of the PVC pipe, which is easy to cause excessive squeezing of the pipe during the traction process and cannot ensure the stability of the pipe during traction, causing deviation or excessive wear of the pipe.

[0031] like Figure 1-4As shown, a continuous automatic traction machine for PVC pipe processing includes a base 1, a traction cylinder 2 is fixed inside the base 1, and a fixed seat 5 is arranged on one side of the base 1, and two rotating rollers 42 are rotatably connected inside the fixed seat 5, and the PVC pipe is driven to rotate by the two rotating rollers 42, so as to facilitate subsequent grinding and improve the grinding effect on the surface of the PVC pipe, and two protective plates 4 are symmetrically fixed at the front and rear ends of the upper surface of the fixed seat 5, and a second gear 12 rotatably connected to the side of the base 1 is fixed on one side of the rotating roller 42;

[0032] A stable traction mechanism 11 is installed between the base 1 and the second gear 12. The stable traction mechanism 11 includes two rotating shafts 14 symmetrically connected to the front and rear ends of the base 1. One side of the rotating shaft 14 penetrates and extends to the outside of the base 1 and is fixed to the second gear 12. A plurality of worms 15 are equidistantly sleeved on the outer layer of the rotating shaft 14. A worm wheel 18 rotatably connected to the inside of the base 1 is meshed above the worm 15. A traction roller 20 is fixed between the two worm wheels 18 on the same axis. The surfaces of the opposite ends of the two traction rollers 20 are curved structures to match the curvature of the PVC pipe.

[0033] A fourth gear 17 is fixed to one end of the worm wheel 18, and a third gear 13 rotatably connected to the inside of the base 1 is meshed on one side of the fourth gear 17. A bidirectional screw 19 is fixed between two third gears 13 on the same axial direction. Two screw sleeves 31 are symmetrically sleeved at the front and rear ends of the outer layer of the bidirectional screw 19. Two second friction plates 34 are symmetrically fixed to the outer layer of the screw sleeve 31. A sleeve 30 is sleeved on the outer layer of the screw sleeve 31. A first friction plate 33 is fixed to the inner part of the sleeve 30 at a position corresponding to the screw sleeve 31. The friction between the first friction plate 33 and the second friction plate 34 is in the absence of external force. In the absence of interference, it is in a stable engaged state, that is, in the absence of external force, the movement of the screw sleeve 31 through the friction between the first friction plate 33 and the second friction plate 34 will drive the sleeve 30 to move, and two groups of limit blocks 32 are symmetrically fixed at the front and rear ends of the sleeve 30, and the top of the sleeve 30 is fixed with a mounting box 21, and the internal rotation of the mounting box 21 is connected with an auxiliary roller 22. The auxiliary roller 22 is used to assist in traction of the PVC pipe to avoid deviation during traction and ensure the stability of the overall traction. A motor 6 is fixed to one side of one of the rotating rollers 42.

[0034] When traction is performed on the PVC pipe, the PVC pipe is placed between the two rotating rollers 42, and the motor 6 is started to drive one of the rotating rollers 42 to rotate. The rotating roller 42 rotates in coordination with the second gear 12 and the gear ring 3 to drive the other second gear 12 to rotate, and then the two rotating rollers 42 rotate synchronously, thereby driving the PVC pipe to rotate. At the same time, the two second gears 12 drive the rotating shaft 14 to rotate. During the rotation of the rotating shaft 14, the worm 15 and the worm wheel 18 drive the traction roller 20 to rotate, thereby traction is formed on the PVC pipe.

[0035] During the traction process, the worm gear 18 rotates to cooperate with the fourth gear 17 and the third gear 13 to drive the bidirectional screw 19 to rotate. During the rotation of the bidirectional screw 19, the two screw sleeves 31 are driven to move relative to or opposite to each other, thereby driving the auxiliary roller 22 to fit the surface of the PVC pipe, so as to maintain the overall stability during traction. At the same time, after the auxiliary roller 22 fits the surface of the PVC pipe, the bidirectional screw 19 continues to rotate. At this time, the auxiliary roller 22 is in an immovable state, that is, the sleeve 30 cannot move, and an overload occurs between the sleeve 30 and the screw sleeve 31. At this time, the friction between the first friction plate 33 inside the sleeve 30 and the second friction plate 34 outside the screw sleeve 31 is invalidated due to the overload, that is, slippage occurs between the sleeve 30 and the screw sleeve 31, which will not affect the subsequent continuous traction, maintaining the overall stable traction effect without motion interference.

[0036] Embodiment 2:

[0037] This embodiment aims to address the problem in the prior art that the PVC pipe may be damaged due to impact during the PVC pipe traction process by the PVC pipe traction device.

[0038] like Figure 5-6 As shown, the embodiment is a continuous automatic traction machine for PVC pipe processing, and an anti-shake component 16 is installed between one end surface of the installation box 21 and the inside of the base 1. The anti-shake component 16 includes two sliding sleeves 29 symmetrically fixed at the front and rear ends of the inside of the base 1. The inside of the sliding sleeve 29 is provided with a buffer chamber 28 and an oil storage bin 27 from the inside to the outside. The inside of the buffer chamber 28 is filled with hydraulic oil, and the inside of the oil storage bin 27 is simultaneously filled with hydraulic oil and a cavity is left to form a buffer space. A piston 25 is slidably connected to the inside of the buffer chamber 28, and a plurality of connecting holes 26 connected to the oil storage bin 27 are equidistantly provided at the bottom of the buffer chamber 28. A fixing rod 23 that penetrates and extends to the outside of the sliding sleeve 29 is fixed to the top of the piston 25, one end of the fixing rod 23 is fixed to the installation box 21, and the outer layer of the fixing rod 23 is sleeved with a spring 24 fixed to the sliding sleeve 29, and the spring 24 is used to form a buffer reset effect.

[0039] When the PVC pipe shakes during the traction process and hits the auxiliary roller 22, the installation box 21 is hit and drives the fixed rod 23 to move into the sliding sleeve 29. During the movement of the installation box 21, it is buffered by the rebound force of the spring 24. At the same time, the movement of the fixed rod 23 drives the piston 25 to move. The movement of the piston 25 is buffered by the hydraulic oil in the buffer chamber 28, thereby reducing the vibration caused by the impact on the auxiliary roller 22, thereby reducing the damage that the PVC may suffer from the impact.

[0040] Embodiment three:

[0041] This embodiment aims to address the problem in the prior art that during the traction process of the PVC pipe traction device, the pipe surface is easily worn due to excessive friction between the pipe and the traction device, thereby reducing the pipe yield.

[0042] like Figure 7 As shown, the embodiment is a continuous automatic traction machine for PVC pipe processing, and one side of the traction cylinder 2 is rotatably connected to a gear ring 3 meshing with two second gears 12, and a fixing box 9 is fixed to the top of the traction cylinder 2, one side of the fixing box 9 is rotatably connected to a first gear 7 meshing with the gear ring 3, and a liquid storage tank 8 is fixed to the top of the fixing box 9, and a polishing lubrication component 10 is installed between the first gear 7 and the fixing box 9;

[0043] The grinding and lubrication assembly 10 includes a grinding wheel 39 rotatably connected to the inside of the fixed box 9, one side of the grinding wheel 39 is fixed to the first gear 7, and the other side of the grinding wheel 39 is fixed with a reciprocating screw 41 rotatably connected to the inside of the fixed box 9, the outer layer of the reciprocating screw 41 is sleeved with a moving block 40, the top of the moving block 40 passes through and extends to the top layer of the fixed box 9 where a moving plate 37 is fixed, a slide groove 35 is opened at a position corresponding to the moving plate 37 in the top layer of the fixed box 9, the size of the slide groove 35 is much larger than the size of the moving plate 37, a plurality of groups of through holes 36 are equidistantly opened at the bottom layer of the liquid storage tank 8, each group of through holes 36 is arranged in a 4×4 square specification, and matching docking holes 38 are opened at positions corresponding to the through holes 36 in the moving plate 37.

[0044] During the traction process, the ring gear 3 rotates and drives the first gear 7 to rotate. The rotation of the first gear 7 drives the grinding wheel 39 to grind the PVC pipe, and at the same time drives the reciprocating screw 41 to rotate. The reciprocating screw 41 rotates and cooperates with the moving block 40 to drive the moving plate 37 to move back and forth, thereby driving the docking hole 38 and the through hole 36 to form an intermittent docking effect. The lubricating oil intermittently penetrates into the interior of the fixed box 9 and is applied to the surface of the grinding wheel 39, so that the friction generated by the grinding wheel 39 when grinding the PVC pipe is reduced by the lubricating oil, and the lubricating oil is applied to the surface of the PVC pipe, thereby reducing the wear during traction.

[0045] Working process and principle of the present invention:

[0046] Step 1: When traction is performed on the PVC pipe, the PVC pipe is placed between the two rotating rollers 42, and the motor 6 is started to drive one of the rotating rollers 42 to rotate. The rotating roller 42 rotates in coordination with the second gear 12 and the gear ring 3 to drive the other second gear 12 to rotate, and then the two rotating rollers 42 rotate synchronously, thereby driving the PVC pipe to rotate. At the same time, the two second gears 12 drive the rotating shaft 14 to rotate. During the rotation of the rotating shaft 14, the worm 15 and the worm wheel 18 drive the traction roller 20 to rotate, thereby traction is formed on the PVC pipe;

[0047] During the traction process, the worm gear 18 rotates to cooperate with the fourth gear 17 and the third gear 13 to drive the bidirectional screw 19 to rotate. During the rotation of the bidirectional screw 19, the two screw sleeves 31 are driven to move relative to or opposite to each other, thereby driving the auxiliary roller 22 to fit the surface of the PVC pipe, so as to maintain the overall stability during traction. At the same time, after the auxiliary roller 22 fits the surface of the PVC pipe, the bidirectional screw 19 continues to rotate. At this time, the auxiliary roller 22 is in an immovable state, that is, the sleeve 30 cannot move, and an overload occurs between the sleeve 30 and the screw sleeve 31. At this time, the friction between the first friction plate 33 inside the sleeve 30 and the second friction plate 34 outside the screw sleeve 31 is invalidated due to the overload, that is, the sleeve 30 and the screw sleeve 31 slip, which will not affect the subsequent continuous traction, and the overall stable traction effect is maintained without motion interference;

[0048] Step 2: When the PVC pipe shakes during the traction process and hits the auxiliary roller 22, the installation box 21 is hit and drives the fixed rod 23 to move inside the sliding sleeve 29. During the movement of the installation box 21, the spring 24 rebounds to form a buffer. At the same time, the movement of the fixed rod 23 drives the piston 25 to move. The movement of the piston 25 is buffered by the hydraulic oil in the buffer chamber 28, thereby reducing the vibration of the auxiliary roller 22 caused by the impact, thereby reducing the damage that the PVC may suffer from the impact;

[0049] Step three: During the traction process, the ring gear 3 rotates and drives the first gear 7 to rotate. The rotation of the first gear 7 drives the grinding wheel 39 to grind the PVC pipe, and at the same time drives the reciprocating screw 41 to rotate. The reciprocating screw 41 rotates and cooperates with the moving block 40 to drive the moving plate 37 to move back and forth, thereby driving the docking hole 38 and the through hole 36 to form an intermittent docking effect. The lubricating oil intermittently penetrates into the interior of the fixed box 9 and is applied to the surface of the grinding wheel 39, so that the friction generated by the grinding wheel 39 when grinding the PVC pipe is reduced by the lubricating oil, and the lubricating oil is applied to the surface of the PVC pipe, thereby reducing the wear during traction.

[0050] In summary, the stable traction mechanism 11 is used to drive the PVC pipe to be stably pulled, and the PVC pipe is always kept in a centered state during traction without being offset. At the same time, the anti-shake component 16 is used to protect the PVC pipe to avoid repeated collisions during traction, which may cause serious damage. Finally, the polishing and lubrication component 10 is used to polish the PVC pipe, and lubricating oil is applied to its surface to reduce the wear during polishing and traction.

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

Claims

1. A continuous automatic traction machine for PVC pipe processing, comprising a base (1), characterized in that: A traction cylinder (2) is fixed inside the base (1), and a fixed seat (5) is provided on one side of the base (1), two rotating rollers (42) are rotatably connected inside the fixed seat (5), and two protective plates (4) are symmetrically fixed at the front and rear ends of the upper surface of the fixed seat (5), a second gear (12) rotatably connected to the side of the base (1) is fixed on one side of the rotating roller (42), a stable traction mechanism (11) is installed between the base (1) and the second gear (12), and a motor (6) is fixed on one side of one of the rotating rollers (42); One side of the traction cylinder (2) is rotatably connected to a gear ring (3) meshing with two second gears (12), and a fixed box (9) is fixed to the top of the traction cylinder (2), one side of the fixed box (9) is rotatably connected to a first gear (7) meshing with the gear ring (3), and a liquid storage tank (8) is fixed to the top of the fixed box (9), and a polishing and lubrication component (10) is installed between the first gear (7) and the fixed box (9).

2. A continuous automatic traction machine for PVC pipe processing according to claim 1, characterized in that: The stable traction mechanism (11) comprises two rotating shafts (14) symmetrically rotatably connected to the front and rear ends of the base (1), one side of the rotating shaft (14) penetrates and extends to the outside of the base (1) to be fixed to the second gear (12), and a plurality of worms (15) are equidistantly sleeved on the outer layer of the rotating shaft (14), a worm wheel (18) rotatably connected to the inside of the base (1) is meshed above the worm wheel (15), and a traction roller (20) is fixed between the two worm wheels (18) on the same axis.

3. A continuous automatic traction machine for PVC pipe processing according to claim 2, characterized in that: A fourth gear (17) is fixed to one end of the worm wheel (18), and a third gear (13) is meshed with one side of the fourth gear (17) and is rotatably connected to the inside of the base (1). A bidirectional screw rod (19) is fixed between two third gears (13) in the same axial direction, and two screw sleeves (31) are symmetrically sleeved at the front and rear ends of the outer layer of the bidirectional screw rod (19), and two second friction plates (34) are symmetrically fixed to the outer layer of the screw sleeve (31), and a sleeve (30) is sleeved on the outer layer of the screw sleeve (31), and a first friction plate (33) is fixed at the position of the sleeve (30) corresponding to the position of the screw sleeve (31), and two groups of limit blocks (32) are symmetrically fixed at the front and rear ends of the inner layer of the sleeve (30).

4. A continuous automatic traction machine for PVC pipe processing according to claim 3, characterized in that: A mounting box (21) is fixed to the top of the sleeve (30), an auxiliary roller (22) is rotatably connected inside the mounting box (21), and an anti-shake component (16) is installed between one end surface of the mounting box (21) and the inside of the base (1), the anti-shake component (16) includes two sliding sleeves (29) symmetrically fixed to the front and rear ends of the inside of the base (1), the inside of the sliding sleeve (29) is provided with a buffer chamber (28) and an oil storage bin (27) layer by layer from the inside to the outside, the inside of the buffer chamber (28) is slidably connected with a piston (25), and the bottom of the buffer chamber (28) is provided with a plurality of connecting holes (26) connected to the oil storage bin (27) at equal intervals.

5. A continuous automatic traction machine for PVC pipe processing according to claim 4, characterized in that: A fixing rod (23) is fixed to the top end of the piston (25) and penetrates through and extends to the outside of the sliding sleeve (29). One end of the fixing rod (23) is fixed to the mounting box (21), and the outer layer of the fixing rod (23) is sleeved with a spring (24) fixed to the sliding sleeve (29).

6. A continuous automatic traction machine for PVC pipe processing according to claim 1, characterized in that: The grinding and lubrication assembly (10) comprises a grinding wheel (39) rotatably connected to the interior of a fixed box (9), one side of the grinding wheel (39) is fixed to the first gear (7), and the other side of the grinding wheel (39) is fixed with a reciprocating screw (41) rotatably connected to the interior of the fixed box (9).

7. A continuous automatic traction machine for PVC pipe processing according to claim 6, characterized in that: The outer layer of the reciprocating screw rod (41) is sleeved with a moving block (40), the top end of the moving block (40) penetrates and extends to the top layer of the fixed box (9) where a moving plate (37) is fixed, and a sliding groove (35) is provided at a position corresponding to the moving plate (37) in the top layer of the fixed box (9).

8. A continuous automatic traction machine for PVC pipe processing according to claim 7, characterized in that: The bottom layer of the liquid storage box (8) is provided with a plurality of groups of through holes (36) at equal intervals, and matching docking holes (38) are provided at positions corresponding to the through holes (36) in the movable plate (37).

Images