Full-automatic intelligent pipe winding system

The sliding seat is fixed and adjusted by the push rod and magnet, the limit fastening plate moves to limit the pipe, the rubber swing plate lubricates the gear, and the cleaning seat slides and cleans as the roll diameter increases, which solves the problems of arch offset and gear loss in the pipe winding process and realizes stable and clean automatic winding.

CN120622221APending Publication Date: 2025-09-12JIANGSU GENLIAN TECH CO LTD
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Patent Information

Application Number
CN202511089949.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-05
Publication Date
2025-09-12

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Abstract

The invention relates to the technical field of pipe winding, and discloses a full-automatic intelligent pipe winding system. Comprising a base, a supporting plate is fixedly connected to the upper surface of the base, a baffle is arranged on the front surface of the supporting plate, a winding roller is fixedly connected to the front surface of the baffle, and the winding roller is located above the base; an adjusting sliding seat is slidably connected to the base, a supporting rod is fixedly connected to the upper surface of the adjusting sliding seat, a lifting plate is fixedly connected to the top end of the supporting rod, an embedding plate is fixedly connected to the rear surface of the lifting plate, and a limiting plate is fixedly connected to the upper surface of the lifting plate. According to the pipe winding device, the threaded rod is screwed so that the threaded rod can push the limiting fastening plate to move, the surface of a pipe can be limited through movement of the limiting fastening plate, and the stability of the pipe during winding can be improved in cooperation with lifting of the lifting plate.
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Description

Technical Field

[0001] The present invention relates to the technical field of pipe winding, and in particular to a fully automatic intelligent pipe winding system. Background Art

[0002] The fully automatic pipe intelligent winding system is an automated equipment designed specifically for plastic pipe production. It utilizes an intelligent control system to achieve unmanned operation, automatically completing the entire process of pipe winding, bundling, and unwinding. It is suitable for a variety of materials, including PVC, HDPE, PE plastic pipes, corrugated pipes, and hoses. Based on closed-loop tension control technology and a PLC controller, the system dynamically monitors the material's elastic modulus (e.g., in the range of 0.8-3.5 GPa) and automatically adjusts the winding roller pressure (adjustable from 20-150 N) to eliminate the "orange peel" effect on the pipe surface and ensure winding accuracy and stability. Core functions include automatic meter counting, automatic line winding and winding, automatic cutting, automatic bundling (supporting 3-5 bundling passes), automatic roll changing, and automatic roll unloading, eliminating the need for human intervention throughout the process, significantly improving production efficiency and product aesthetics. The dual-station design utilizes a robotic arm for rapid roll changes (with process switching times as low as 12 seconds), synchronizing the winding speed with the production speed of the pipe storage machine to prevent pipe scratches or accumulation. In terms of technical features, the system adopts a modular structure to adapt to different pipe sizes (such as diameters of 16-75mm), supports high-speed winding (0.5-40m / min), and achieves continuous operation through an electromagnetic clutch, compensating for unloading time differences and optimizing space utilization.

[0003] At present, during the winding process of pipes, the pipes are usually wound in a suspended manner, which causes the pipes to easily arch or deflect during winding, thereby affecting the winding efficiency of the pipes. At the same time, when the device drives the winding pipes, the driving part of the device is used for a long time, which is likely to increase the friction of the driving part and cause wear of the driving parts. Summary of the Invention

[0004] (1) Technical problems solved

[0005] The present invention aims at the deficiencies of the prior art and provides a fully automatic intelligent pipe winding system. The push rod is lifted, the magnet is separated from the base, the adjusting sliding seat can slide freely, the threaded rod is loosened, and the limit fastening plate can move. The adjusting sliding seat, the support rod, and the lifting plate are manually pushed to make them slide on the base to the required working position through the adjusting sliding seat. After reaching the target position, the push rod is lowered, and the magnet at the bottom of the push rod is attracted by the base to generate a strong magnetic attraction force, which firmly fixes the adjusting sliding seat on the base to prevent sliding. The object to be supported or processed is placed on the upper surface of the lifting plate, and the interlocking plate can be interlocked with another set of lifting plates to prevent gaps from appearing between the lifting plates. The threaded rod is twisted to push the limit fastening plate to move. The movement of the limit fastening plate can be used to limit the surface of the pipe, and the lifting plate can be used to The lifting of the lifting plate can improve the stability of the pipe when it is rolled up. Since the bottom of the rubber swing plate extends into the interior of the machine box through the connecting plate and fits the surface of the second driving gear, when the second driving gear rotates, the rubber swing plate may shake due to friction. By utilizing the elasticity of the second spring, when the rubber swing plate shakes due to friction, the rubber swing plate can drive the hollow plate to shake inside the machine box, and the second spring can increase the elastic force of the hollow plate. When the hollow plate is elastic, the hollow plate can drive the fixed rod and the extrusion plate to elastically squeeze the adsorption cotton. The adsorption cotton is affected by the extrusion, so that the lubricating oil can overflow from the inside of the adsorption cotton and penetrate the hollow plate, and is drained into the interior of the machine box through the rubber swing plate to lubricate the first driving gear and the second driving gear, thereby effectively avoiding the loss of the first driving gear and the second driving gear.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides the following technical solution: comprising a base, wherein the upper surface of the base is fixedly connected to a support plate, the front surface of the support plate is provided with a baffle, the front surface of the baffle is fixedly connected to a winding roller, and the winding roller is located above the base;

[0008] The base is slidingly connected to an adjustable sliding seat, the upper surface of the adjusting sliding seat is fixedly connected to a support rod, the top of the support rod is fixedly connected to a lifting plate, the rear surface of the lifting plate is fixedly connected to a fitting plate, the upper surface of the lifting plate is fixedly connected to a limiting plate, the internal thread of the limiting plate is connected to a threaded rod, the end of the threaded rod is movably connected to a limiting fastening plate through a bearing, and the limiting fastening plate is located above the lifting plate, the internal sliding connection of the adjusting sliding seat is connected to a push rod, the bottom end of the push rod is provided with a magnet, and the magnet is attracted to the upper surface of the base.

[0009] Preferably, a fixing plate is fixedly connected to the upper surface of the base, and the fixing plate is located below the baffle, and a connecting plate is fixedly connected to the rear surface of the fixing plate.

[0010] Preferably, the upper surface of the connecting plate is fixedly connected with a sleeve, the inner bottom wall of the sleeve is fixedly connected with a first spring, the top end of the first spring is fixedly connected with a moving rod, and the moving rod is slidably connected to the inside of the sleeve.

[0011] Preferably, the top end of the movable rod is fixedly connected with a cleaning seat, and the cleaning seat is located below the winding roller.

[0012] Preferably, the upper surface of the support plate is fixedly connected to an oil tank, the upper surface of the oil tank is fixedly connected to an oil inlet pipe, and adsorption cotton is provided inside the oil tank.

[0013] Preferably, the internal fixed top wall and the internal bottom wall of the oil tank are both fixedly connected with a second spring, and the bottom end of the second spring is fixedly connected with a hollow plate.

[0014] Preferably, a fixing rod is fixedly connected to the upper surface of the hollow plate, an extrusion plate is fixedly connected to the top end of the fixing rod, and a rubber swing plate is provided on the lower surface of the hollow plate.

[0015] Preferably, the rear surface of the support plate is fixedly connected to a housing, the upper surface of the housing is fixedly connected to a connecting plate, and the interior of the connecting plate corresponds to the rubber swing plate.

[0016] Preferably, a motor is provided on the rear surface of the machine box, and an output end of the motor is fixedly connected to a first driving gear.

[0017] Preferably, a second driving gear is movably connected inside the housing, and the second driving gear is meshed with the first driving gear, and the front surface of the second driving gear is fixedly connected to the baffle.

[0018] Compared with the existing technology, the present invention provides a fully automatic intelligent pipe winding system with the following beneficial effects:

[0019] 1. The push rod of the present invention is lifted, the magnet is separated from the base, the adjusting sliding seat can slide freely, the threaded rod is loosened, the limit fastening plate can move, and the adjusting sliding seat, support rod, and lifting plate are manually pushed to make them slide on the base through the adjusting sliding seat to the required working position. After reaching the target position, the push rod is lowered, and the magnet at the bottom of the push rod is adsorbed by the base, generating a strong magnetic attraction, which firmly fixes the adjusting sliding seat on the base to prevent sliding, and places the object to be supported or processed on the upper surface of the lifting plate, which can be engaged with another set of lifting plates by using the interlocking plate to prevent gaps from appearing between the lifting plates, and the threaded rod is twisted to push the limit fastening plate to move. The movement of the limit fastening plate can be used to limit the surface of the pipe, and the lifting of the lifting plate can improve the stability of the pipe when it is rolled up.

[0020] 2. In the present invention, the bottom of the rubber swing plate extends into the interior of the machine box through the connecting plate and fits into the surface of the second driving gear. When the second driving gear rotates, the rubber swing plate may shake due to friction. By utilizing the elasticity of the second spring, when the rubber swing plate shakes due to friction, the rubber swing plate can drive the hollow plate to shake inside the machine box, and the second spring can increase the elastic force of the hollow plate. When the hollow plate elastically vibrates, the hollow plate can drive the fixed rod and the extrusion plate to elastically squeeze the adsorption cotton. The adsorption cotton is affected by the extrusion, so that lubricating oil can overflow from the interior of the adsorption cotton and penetrate the hollow plate. The oil is drained into the interior of the machine box through the rubber swing plate to lubricate the first driving gear and the second driving gear, thereby effectively avoiding wear of the first driving gear and the second driving gear.

[0021] 3. In the present invention, as the winding roller continuously winds the material, the winding diameter of the material will gradually increase, and the outer surface of the tube will approach the cleaning seat. When the outer diameter of the tube increases and contacts the cleaning seat, a downward pressure will be continuously applied to the cleaning seat. The downward pressure overcomes the elastic force of the first spring, pushing the cleaning seat and the moving rod to slide downward along the axial direction of the sleeve. The downward movement of the moving rod will further compress the first spring, and the elastic force is transmitted to the cleaning seat through the moving rod, pushing the cleaning seat upward and pressing tightly against the material surface of the winding roller, ensuring that the cleaning seat always keeps in contact with the material, thereby effectively performing cleaning or sorting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a side structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the adjustable sliding seat of the present invention when viewed from above;

[0025] Figure 4 This is a schematic diagram of the internal structure of the fuel tank of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the casing of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the machine box of the present invention.

[0028] Among them: 1. Base; 2. Adjustable sliding seat; 3. Support plate; 4. Oil tank; 5. Winding roller; 6. Baffle; 7. Fixed plate; 8. Machine box; 9. Connecting plate; 10. Sleeve; 11. Cleaning seat; 12. Magnet; 13. Push rod; 14. Support rod; 15. Engraving plate; 16. Limiting plate; 17. Limiting and fastening plate; 18. Threaded rod; 19. Moving rod; 20. First spring; 21. Fixed rod; 22. Adsorption cotton; 23. Hollow plate; 24. Second spring; 25. Oil inlet pipe; 26. Extrusion plate; 27. Rubber swing plate; 28. Motor; 29. ​​First drive gear; 30. Second drive gear; 31. Connecting plate; 32. Lifting plate. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-6 A fully automatic pipe intelligent winding system includes a base 1, the upper surface of the base 1 is fixedly connected to a support plate 3, the front surface of the support plate 3 is provided with a baffle 6, the front surface of the baffle 6 is fixedly connected to a winding roller 5, and the winding roller 5 is located above the base 1, the rear surface of the support plate 3 is fixedly connected to an organic box 8, the upper surface of the machine box 8 is fixedly connected to a connecting plate 31, and the interior of the connecting plate 31 corresponds to the rubber swing plate 27, the rear surface of the machine box 8 is provided with a motor 28, the output end of the motor 28 is fixedly connected to a first driving gear 29, the interior of the machine box 8 is movably connected to a second driving gear 30, and the second driving gear 30 is meshed with the first driving gear 29, and the front surface of the second driving gear 30 is fixedly connected to the baffle 6.

[0031] Connecting the motor 28 to an external power source and starting the motor 28 can drive the first drive gear 29 to rotate. By utilizing the engagement between the first drive gear 29 and the second drive gear 30, the second drive gear 30 can drive the baffle 6 and the winding roller 5 to rotate together. Through the rotation of the winding roller 5, the pipe can be automatically wound, thereby saving a lot of labor.

[0032] The base 1 is slidably connected to an adjustable sliding seat 2, and the upper surface of the adjustable sliding seat 2 is fixedly connected to a support rod 14, the top of the support rod 14 is fixedly connected to a lifting plate 32, and the rear surface of the lifting plate 32 is fixedly connected to a fitting plate 15, and the upper surface of the lifting plate 32 is fixedly connected to a limiting plate 16, and the internal thread of the limiting plate 16 is connected to a threaded rod 18, and the end of the threaded rod 18 is movably connected to a limiting fastening plate 17 through a bearing, and the limiting fastening plate 17 is located above the lifting plate 32, and the internal sliding connection of the adjustable sliding seat 2 is connected to a push rod 13, and a magnet 12 is provided at the bottom end of the push rod 13, and the magnet 12 is attracted to the upper surface of the base 1.

[0033] When the push rod 13 is lifted, the magnet 12 is separated from the base 1, the adjusting sliding seat 2 can slide freely, the threaded rod 18 is loosened, and the limit fastening plate 17 can be moved. The adjusting sliding seat 2, the support rod 14, and the lifting plate 32 are manually pushed to slide on the base 1 to the required working position through the adjusting sliding seat 2. After reaching the target position, the push rod 13 is lowered, and the magnet 12 at the bottom of the push rod 13 is adsorbed by the base 1, generating a strong magnetic attraction, which firmly fixes the adjusting sliding seat 2 on the base 1 to prevent sliding. The object to be supported or processed is placed on the upper surface of the lifting plate 32. The interlocking plate 15 can be interlocked with the other set of lifting plates 32 to prevent gaps from appearing between the lifting plates 32. The threaded rod 18 is twisted to push the limit fastening plate 17 to move. The movement of the limit fastening plate 17 can be used to limit the surface of the pipe, and the lifting of the lifting plate 32 can improve the stability of the pipe when it is rolled up.

[0034] The upper surface of the base 1 is fixedly connected to a fixed plate 7, and the fixed plate 7 is located below the baffle 6. The rear surface of the fixed plate 7 is fixedly connected to a connecting plate 9. The upper surface of the connecting plate 9 is fixedly connected to a sleeve 10. The inner bottom wall of the sleeve 10 is fixedly connected to a first spring 20. The top end of the first spring 20 is fixedly connected to a moving rod 19, and the moving rod 19 is slidably connected to the inside of the sleeve 10. The top end of the moving rod 19 is fixedly connected to a cleaning seat 11, and the cleaning seat 11 is located below the winding roller 5.

[0035] As the winding roller 5 continuously winds the material, the winding diameter of the material will gradually increase, and the outer surface of the pipe will approach the cleaning seat 11. When the outer diameter of the pipe increases and contacts the cleaning seat 11, a downward pressure will continue to be applied to the cleaning seat 11. The downward pressure overcomes the elastic force of the first spring 20, pushing the cleaning seat 11 and the moving rod 19 to slide downward along the axial direction of the sleeve 10. The downward movement of the moving rod 19 will further compress the first spring 20. The elastic force is transmitted to the cleaning seat 11 through the moving rod 19, pushing the cleaning seat 11 upward and tightly pressing against the material surface of the winding roller 5, ensuring that the cleaning seat 11 always keeps in contact with the material, thereby effectively performing cleaning or sorting work.

[0036] The upper surface of the support plate 3 is fixedly connected to the oil tank 4, the upper surface of the oil tank 4 is fixedly connected to the oil inlet pipe 25, the interior of the oil tank 4 is provided with adsorption cotton 22, the internal fixed inner top wall and inner bottom wall of the oil tank 4 are fixedly connected to the second spring 24, the bottom end of the second spring 24 is fixedly connected to the hollow plate 23, the upper surface of the hollow plate 23 is fixedly connected to the fixing rod 21, the top end of the fixing rod 21 is fixedly connected to the extrusion plate 26, and the lower surface of the hollow plate 23 is provided with a rubber swing plate 27.

[0037] The lubricating oil can be poured into the oil tank 4 through the oil inlet pipe 25, and the lubricating oil can be absorbed by the absorbent cotton 22. Since the bottom of the rubber swing plate 27 extends into the interior of the machine box 8 through the connecting plate 31 and fits the surface of the second driving gear 30, when the second driving gear 30 rotates, the rubber swing plate 27 can be shaken by the friction. The elasticity of the second spring 24 is used to make the rubber swing plate 27 shake by friction, and the rubber swing plate 27 can drive the hollow plate 23 to shake inside the machine box 8. The second spring 24 can increase the elastic force of the hollow plate 23. When the hollow plate 23 is elastic, the hollow plate 23 can drive the fixed rod 21 and the extrusion plate 26 to elastically squeeze the adsorption cotton 22. The adsorption cotton 22 is affected by the extrusion, so that the lubricating oil can overflow from the inside of the adsorption cotton 22 and penetrate the hollow plate 23. It is drained into the interior of the machine box 8 through the rubber swing plate 27 to lubricate the first drive gear 29 and the second drive gear 30, effectively avoiding wear of the first drive gear 29 and the second drive gear 30.

[0038] When the oil is in use, the lubricating oil can be poured into the oil tank 4 through the oil inlet pipe 25, and the lubricating oil can be absorbed by the adsorption cotton 22, the push rod 13 is lifted, the magnet 12 is separated from the base 1, the adjusting sliding seat 2 can slide freely, the threaded rod 18 is loosened, and the limit fastening plate 17 can be moved. The adjusting sliding seat 2, the support rod 14, and the lifting plate 32 are manually pushed to slide on the base 1 to the required working position through the adjusting sliding seat 2. After reaching the target position, the push rod 13 is lowered, and the magnet 12 at the bottom of the push rod 13 is adsorbed by the base 1, generating a strong magnetic attraction, which firmly fixes the adjusting sliding seat 2 on the base 1 to prevent sliding. The object to be supported or processed is placed on the upper surface of the lifting plate 32, and the interlocking plate 15 can be interlocked with the other set of lifting plates 32 to prevent gaps from appearing between the lifting plates 32. The threaded rod 18 is twisted to push the limit fastening plate 17 to move, and the surface of the pipe can be limited by the movement of the limit fastening plate 17.

[0039] The starting motor 28 can drive the first driving gear 29 to rotate. By utilizing the meshing of the first driving gear 29 and the second driving gear 30, the second driving gear 30 can drive the baffle 6 and the winding roller 5 to rotate together. Through the rotation of the winding roller 5, the pipe can be automatically wound. When the second driving gear 30 is rotating, the rubber swing plate 27 can shake due to friction. By utilizing the elasticity of the second spring 24, when the rubber swing plate 27 shakes due to friction, the rubber swing plate 27 can drive the hollow plate 23 to shake inside the machine box 8, and the second spring 24 can increase the elastic force of the hollow plate 23. When the hollow plate 23 is elastic, the hollow plate 23 can drive the fixed rod 21 and the extrusion plate 26 to elastically squeeze the adsorption cotton 22. The adsorption cotton 22 is affected by the extrusion, so that the lubricating oil can be sucked out from the inside of the adsorption cotton 22 The overflow passes through the hollow plate 23 and is drained into the interior of the machine box 8 through the rubber swing plate 27 to lubricate the first drive gear 29 and the second drive gear 30. As the winding roller 5 continues to wind the material, the winding diameter of the material will gradually increase, and the outer surface of the pipe will approach the cleaning seat 11. When the outer diameter of the pipe increases and contacts the cleaning seat 11, it will continue to apply a downward pressure to the cleaning seat 11. The downward pressure overcomes the elastic force of the first spring 20, pushing the cleaning seat 11 and the moving rod 19 to slide downward along the axial direction of the sleeve 10. The downward movement of the moving rod 19 will further compress the first spring 20, and the elastic force is transmitted to the cleaning seat 11 through the moving rod 19, pushing the cleaning seat 11 upward and tightly pressing against the material surface of the winding roller 5, ensuring that the cleaning seat 11 always keeps in contact with the material, thereby effectively performing cleaning or sorting work.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic pipe intelligent winding system, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a support plate (3), the front surface of the support plate (3) is provided with a baffle (6), the front surface of the baffle (6) is fixedly connected to a winding roller (5), and the winding roller (5) is located above the base (1); The base (1) is slidably connected to an adjusting sliding seat (2), the upper surface of the adjusting sliding seat (2) is fixedly connected to a support rod (14), the top end of the support rod (14) is fixedly connected to a lifting plate (32), the rear surface of the lifting plate (32) is fixedly connected to a fitting plate (15), the upper surface of the lifting plate (32) is fixedly connected to a limiting plate (16), the internal thread of the limiting plate (16) is connected to a threaded rod (18), the end of the threaded rod (18) is movably connected to a limiting fastening plate (17) through a bearing, and the limiting fastening plate (17) is located above the lifting plate (32), the internal sliding connection of the adjusting sliding seat (2) is connected to a push rod (13), the bottom end of the push rod (13) is provided with a magnet (12), and the magnet (12) is attracted to the upper surface of the base (1).

2. The fully automatic intelligent pipe winding system according to claim 1, characterized in that: A fixing plate (7) is fixedly connected to the upper surface of the base (1), and the fixing plate (7) is located below the baffle (6). A connecting plate (9) is fixedly connected to the rear surface of the fixing plate (7).

3. The fully automatic intelligent pipe winding system according to claim 2, characterized in that: The upper surface of the connecting plate (9) is fixedly connected to a sleeve (10), the inner bottom wall of the sleeve (10) is fixedly connected to a first spring (20), the top end of the first spring (20) is fixedly connected to a moving rod (19), and the moving rod (19) is slidably connected to the inside of the sleeve (10).

4. The fully automatic intelligent pipe winding system according to claim 3, characterized in that: The top end of the moving rod (19) is fixedly connected to a cleaning seat (11), and the cleaning seat (11) is located below the winding roller (5).

5. The fully automatic intelligent pipe winding system according to claim 1, characterized in that: The upper surface of the support plate (3) is fixedly connected to an oil tank (4), the upper surface of the oil tank (4) is fixedly connected to an oil inlet pipe (25), and adsorption cotton (22) is provided inside the oil tank (4).

6. The fully automatic intelligent pipe winding system according to claim 5, characterized in that: The internal fixed top wall and the internal bottom wall of the oil tank (4) are both fixedly connected with a second spring (24), and the bottom end of the second spring (24) is fixedly connected with a hollow plate (23).

7. The fully automatic intelligent pipe winding system according to claim 6, characterized in that: The upper surface of the hollow plate (23) is fixedly connected to a fixing rod (21), the top end of the fixing rod (21) is fixedly connected to an extrusion plate (26), and the lower surface of the hollow plate (23) is provided with a rubber swing plate (27).

8. The fully automatic intelligent pipe winding system according to claim 1, characterized in that: The rear surface of the support plate (3) is fixedly connected to the machine box (8), the upper surface of the machine box (8) is fixedly connected to the communication plate (31), and the interior of the communication plate (31) corresponds to the rubber swing plate (27).

9. The fully automatic intelligent pipe winding system according to claim 8, characterized in that: A motor (28) is provided on the rear surface of the machine box (8), and an output end of the motor (28) is fixedly connected to a first driving gear (29).

10. The fully automatic intelligent pipe winding system according to claim 8, characterized in that: A second driving gear (30) is movably connected inside the machine box (8), and the second driving gear (30) is meshed and connected with the first driving gear (29), and the front surface of the second driving gear (30) is fixedly connected to the baffle (6).