PVC coiled material production conveying equipment with automatic tension adjustment function

Abstract

The utility model belongs to the technical field of PVC (polyvinyl chloride) coiled material production, in particular to PVC coiled material production conveying equipment with an automatic tension adjustment function, which comprises a base and further comprises two groups of conveying mechanisms which are symmetrically fixed at the top of the base and comprise two symmetrically distributed support plates, conveying rollers and a rotary power mechanism; the two lifting plates are symmetrically distributed, and rectangular holes are formed in the lifting plates; the mounting square block is positioned in the rectangular hole; the tensioning roller is rotationally mounted between the two mounting square blocks; an adjusting mechanism; a pressure sensor; the initial height of the lifting plate is adjusted through the adjusting mechanism, the tension is monitored in real time through the pressure sensor, the problem that coiled materials are damaged or conveying is interrupted due to the fact that the tension degree of existing equipment cannot be adjusted is solved, the device has the advantages of being convenient to use, easy to adjust and high in safety performance, the tension degree can be preset according to different production requirements, and production efficiency is improved. And the problem of coiled material tensile damage or conveying interruption is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of PVC roll production technology, specifically relating to a PVC roll production and conveying equipment with automatic tension adjustment. Background Technology

[0002] PVC rolls are a type of thermoplastic PVC roll material. This roll material uses polyester fiber fabric as reinforcement and is formed by a special extrusion coating process that combines the double-sided polyvinyl chloride plastic layers and the middle polyester reinforcement into one polymer roll material.

[0003] PVC rolls generally need to be rolled into a tube before being packaged and transported. Currently, PVC rolls need to be transported using roller conveyor components during the winding process. However, some roller conveyor components may cause loosening and wrinkling when transporting PVC rolls, and the wrinkled parts need to be adjusted and smoothed out in time.

[0004] A search revealed that Chinese utility model patent CN219567046U discloses "a conveying device for PVC rolls", which includes a PVC roll body, a frame, and several conveying rollers rotatably disposed between the frame for conveying the PVC roll body. The frame is provided with a power component for driving one conveying roller to rotate, and an elastic tensioning mechanism is provided between adjacent conveying rollers. The elastic tensioning mechanism includes a U-shaped shaft, a tensioning roller rotatably sleeved in the middle of the U-shaped shaft, movable plates symmetrically disposed at both ends of the U-shaped shaft, a slide rod penetrating through both ends of the movable plate in a vertical direction, a support block disposed at the bottom end of the slide rod, a top plate disposed at the top end of the slide rod, and a tensioning spring located between the movable plate and the support block and sleeved on the slide rod.

[0005] While existing conveying devices, including those described above, can smooth out wrinkles in PVC rolls, they cannot adjust the tension of the PVC rolls to meet actual conveying needs. Excessive tension will apply excessive force to the PVC rolls, causing the material to be stretched and thinned, disrupting thickness uniformity and affecting subsequent processing. When the tension is uneven or too low, the rolls are prone to deviation, stagnation, or slippage, causing conveying interruptions.

[0006] To address the aforementioned problems, this utility model proposes a PVC roll production and conveying equipment with automatic tension adjustment. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a PVC roll production and conveying equipment with automatic tension adjustment, which is convenient to use, easy to adjust, and has high safety performance.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a PVC roll production and conveying equipment with automatic tension adjustment, including a base, and further comprising:

[0009] Two sets of conveying mechanisms are symmetrically fixed to the top of the base. Each set includes two symmetrically distributed support plates, a conveying roller rotatably mounted between the two support plates, and a rotary power mechanism for driving the conveying roller to rotate.

[0010] Two lifting plates are symmetrically distributed and rectangular holes are provided on the lifting plates;

[0011] The mounting block is located inside the rectangular hole;

[0012] The tensioning roller is rotatably mounted between the two mounting blocks;

[0013] An adjustment mechanism is provided for adjusting the initial height of the two lifting plates.

[0014] A pressure sensor is fixed to the top surface of the mounting block.

[0015] As a preferred embodiment of this utility model, the adjustment mechanism includes:

[0016] Two fixing plates are symmetrically fixed to the top surface of the base;

[0017] Two movable seats are symmetrically distributed, and their bottom surfaces are attached to the top surface of the base.

[0018] Two sets of flip support rods are symmetrically distributed, and the bottom end of each flip support rod is hinged to the movable seat and the top end is hinged to the lifting plate.

[0019] A bidirectional threaded screw is rotatably mounted between the two fixed plates and connected to the movable seat by thread engagement.

[0020] The second servo motor is fixed to the outer wall of the fixed plate and is used to drive the bidirectional threaded screw to rotate.

[0021] As a preferred embodiment of this utility model, the adjustment mechanism further includes:

[0022] Two guide rods are symmetrically fixed between the two fixed plates and pass through the movable seat.

[0023] As a preferred embodiment of this utility model, it further includes:

[0024] Two second fixed shafts are symmetrically fixed at both ends of the tension roller, and the second fixed shafts pass through the mounting block to form a rotating structure.

[0025] As a preferred embodiment of this utility model, it further includes:

[0026] Two fixed shafts are symmetrically fixed at both ends of the conveying roller, and the fixed shafts pass through the support plate to form a rotating structure.

[0027] As a preferred embodiment of this utility model, the rotary power mechanism includes:

[0028] An active synchronizing wheel is rotatably connected to the support plate;

[0029] The first servo motor is fixed to the outer wall of the support plate and is used to drive the active synchronous wheel to rotate.

[0030] Driven synchronous pulley, the driven synchronous pulley is fixed on the first fixed shaft;

[0031] A timing belt, which is tensioned by the driving timing pulley and the driven timing pulley.

[0032] As a preferred embodiment of this utility model, it further includes:

[0033] The bearing has its inner ring fixedly connected to the first fixed shaft, and a semi-circular groove for the bearing to be inserted is provided at the top of the support plate.

[0034] A semi-circular clamp, located at the top of the support plate, is used to press down the bearing;

[0035] A locking bolt passes through the semi-circular clamp and is fixedly connected to the support plate by thread engagement.

[0036] As a preferred embodiment of this utility model, it further includes:

[0037] A positioning post is fixed to the outer wall of the semi-circular groove, and a positioning hole is provided on the semi-circular clamp for the positioning post to pass through.

[0038] Compared with the prior art, the beneficial effects of this utility model are:

[0039] In this invention, the initial height of the lifting plate is adjusted by adjusting the mechanism, and the tension is monitored in real time by the pressure sensor. This solves the problem of roll material damage or conveying interruption caused by the non-adjustable tension of existing equipment. It is characterized by convenient use, easy adjustment and high safety performance. The tension can be preset according to different production needs to reduce the problem of roll material stretching damage or conveying interruption.

[0040] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0041] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0042] Figure 1 This is a schematic diagram of the structure of this utility model;

[0043] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the diagram;

[0044] Figure 3 This is a schematic diagram of the isometric structure of the conveying mechanism in this utility model;

[0045] Figure 4 This utility model Figure 3 A magnified structural diagram at point B in the diagram.

[0046] In the diagram: 1. Base; 2. Conveying mechanism; 21. Support plate; 211. Semi-circular groove; 22. Conveying roller; 221. Fixed shaft No. 1; 23. Rotary power mechanism; 231. Active synchronous pulley; 232. Servo motor No. 1; 233. Driven synchronous pulley; 234. Synchronous belt; 3. Lifting plate; 31. Rectangular hole; 4. Mounting block; 5. Tensioning roller; 51. Fixed shaft No. 2; 6. Adjusting mechanism; 61. Fixed plate; 62. Moving seat; 63. Tilting support rod; 64. Bidirectional threaded screw; 65. Servo motor No. 2; 66. Guide rod; 7. Pressure sensor; 8. Bearing; 9. Semi-circular clamp; 91. Positioning hole; 10. Locking bolt; 11. Positioning column. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] Please see Figures 1-4 The present invention provides the following technical solution: a PVC roll production and conveying equipment with automatic tension adjustment, including a base 1, and further including: two sets of conveying mechanisms 2, two lifting plates 3, mounting blocks 4, tension rollers 5, adjustment mechanisms 6 and pressure sensors 7.

[0049] Furthermore, by Figure 1 and Figure 2 As shown in this embodiment, two sets of conveying mechanisms 2 are symmetrically fixed to the top of the base 1. Each set includes two symmetrically distributed support plates 21, a conveying roller 22 rotatably installed between the two support plates 21, and a rotary power mechanism 23 for driving the conveying roller 22 to rotate. Two lifting plates 3 are symmetrically distributed, and rectangular holes 31 are provided on the lifting plates 3. The mounting block 4 is located in the rectangular hole 31. The tension roller 5 is rotatably installed between the two mounting blocks 4. The adjustment mechanism 6 is used to adjust the initial height of the two lifting plates 3. The pressure sensor 7 is fixed to the top surface of the mounting block 4. With the above scheme, before the equipment is started, the initial height of the two lifting plates 3 is adjusted by the adjustment mechanism 6 to adjust the lifting plates 3 to a suitable initial height, so that the tension roller 5 installed between the two mounting blocks 4 is in a preset initial position. At this time, a certain gap is formed between the tension roller 5 and the conveying roller 22 on the two sets of conveying mechanisms 2, providing a suitable initial tension foundation for the subsequent conveying of PVC rolls.

[0050] When the equipment starts working, the rotational power mechanism 23 of the two sets of conveying mechanisms 2 drives the conveying rollers 22 to rotate, thereby driving the PVC rolls to be conveyed forward on the conveying rollers 22.

[0051] During the conveying process, the PVC roll will pass under the tension roller 5. The tension roller 5 will tension the roll. At this time, the tension of the roll will be transmitted to the mounting block 4 through the tension roller 5. The pressure sensor 7 on the top surface of the mounting block 4 will detect this pressure signal in real time. The pressure sensor 7 will convert the pressure signal into an electrical signal and transmit it to the control system of the equipment (such as PLC or industrial computer).

[0052] The control system has a preset reasonable tension range for the PVC roll material during transportation. When the control system receives a signal from the pressure sensor 7, it converts it into a corresponding tension value and compares it with the preset tension range. If the detected tension value is less than the preset minimum value, it indicates that the roll material tension is insufficient, which may lead to problems such as loosening or wrinkling. At this time, the control system will issue a command to control the adjustment mechanism 6 to move, so that the two lifting plates 3 descend synchronously to a certain height. The lifting plates 3 rise, causing the mounting block 4 and the tension roller 5 to descend together, thereby increasing the pressure of the tension roller 5 on the roll material and increasing the tension of the roll material. Conversely, if the detected tension value is greater than the preset maximum value, it indicates that the roll material tension is too high, which may lead to excessive stretching or even breakage of the roll material. The control system will then control the adjustment mechanism 6 to raise the lifting plates 3, and the tension roller 5 will rise accordingly, reducing the pressure on the roll material and lowering the tension of the roll material.

[0053] During the adjustment mechanism 6's operation, the pressure sensor 7 continuously monitors the tension changes in real time and feeds back the new signals to the control system, forming a closed-loop control circuit. This circuit can dynamically adjust the tension of the PVC roll during the conveying process in real time, keeping it within a preset reasonable range. This ensures that the PVC roll remains stable during production and conveying, avoiding any impact on product quality and production efficiency due to improper tension.

[0054] In addition, the symmetrical distribution of the two lifting plates 3 and the rotatable installation of the tension roller 5 between the two mounting blocks 4 enable the tension roller 5 to apply tension to the roll material evenly, avoiding the problem of roll material deviation or uneven tension caused by uneven force on one side. The pressure sensor 7 is fixed to the top surface of the mounting block 4, which can accurately detect the change in the tension of the roll material by the tension roller 5, providing accurate feedback signals to the control system and ensuring the accuracy and timeliness of tension adjustment.

[0055] Optionally, by Figure 1As shown, in this embodiment, the adjustment mechanism 6 includes: two fixed plates 61, two movable seats 62, two sets of flip support rods 63, a bidirectional threaded screw 64, and a second servo motor 65. The two fixed plates 61 are symmetrically fixed to the top surface of the base 1. The two movable seats 62 are symmetrically distributed, with their bottom surfaces touching the top surface of the base 1. The two sets of flip support rods 63 are symmetrically distributed, with the bottom end of the flip support rod 63 hinged to the movable seat 62 and the top end hinged to the lifting plate 3. The bidirectional threaded screw 64 is rotatably installed between the two fixed plates 61 and connected to the movable seat 62 by threaded engagement. The second servo motor 65 is fixed to the outer wall of the fixed plate 61 and is used to drive the bidirectional threaded screw 64 to rotate. With the above scheme, when it is necessary to adjust the tension, the second servo motor 65 starts, and its output shaft drives the bidirectional threaded screw 64 to rotate through a coupling. Since the threads at both ends of the bidirectional threaded screw 64 are opposite, the two movable seats 62 will move synchronously towards or away from each other along the top surface of the base 1 when the bidirectional threaded screw 64 rotates.

[0056] When the bidirectional threaded screw 64 rotates clockwise, the two moving seats 62 move towards the middle, and through the hinge structure of the flip support rod 63, the lifting plate 3 rises synchronously. Conversely, when the bidirectional threaded screw 64 rotates counterclockwise, the moving seats 62 separate to both sides, and the flip support rod 63 drives the lifting plate 3 to fall synchronously. Through the precise angle control of the second servo motor 65, the lifting plate 3 can be adjusted to the preset initial height, so that the tension roller 5 and the conveying roller 22 form an initial tension gap that meets the process requirements.

[0057] Preferably, by Figure 1 As shown in this embodiment, the adjustment mechanism 6 further includes two guide rods 66, which are symmetrically fixed between two fixed plates 61 and pass through the movable seat 62. With the above solution, the two guide rods 66 are used to guide the movable seat 62 during use, which further improves the stability of the movable seat 62.

[0058] Preferably, by Figure 1 and Figure 2 As shown, this embodiment further includes two second-fixed shafts 51, which are symmetrically fixed at both ends of the tension roller 5. The second-fixed shafts 51 pass through the mounting block 4 to form a rotating structure. With the above solution, during use, the tension roller 5 is supported from both ends by the two second-fixed shafts 51, ensuring the stability of the tension roller 5 and avoiding the problem of tilting of the tension roller 5 due to unilateral force, thus ensuring the reliability of PVC roll material conveying.

[0059] The second fixed shaft 51 and the mounting block 4 form a rotating structure, providing a stable base for the tension roller 5 to rotate.

[0060] Preferably, by Figures 1-4As shown, in this embodiment, it further includes two No. 1 fixed shafts 221, which are symmetrically fixed at both ends of the conveying roller 22. The No. 1 fixed shafts 221 penetrate the support plate 21 to form a rotating structure. With the above solution, during use, the conveying roller 22 is supported from both ends by the two No. 1 fixed shafts 221 to ensure the stability of the conveying roller 22 and avoid the problem of tilting of the conveying roller 22 due to unilateral force, thus ensuring the reliability of PVC roll material conveying.

[0061] The first fixed shaft 221 and the support plate 21 form a rotating structure, providing a stable base for the rotation of the conveyor roller 22.

[0062] Optionally, by Figures 1-4 As shown, in this embodiment, the rotating power mechanism 23 includes: an active synchronous wheel 231, a first servo motor 232, a driven synchronous wheel 233, and a synchronous belt 234. The active synchronous wheel 231 is rotatably connected to the support plate 21. The first servo motor 232 is fixed to the outer wall of the support plate 21 and is used to drive the active synchronous wheel 231 to rotate. The driven synchronous wheel 233 is fixed on a first fixed shaft 221. The synchronous belt 234 is tensioned between the active synchronous wheel 231 and the driven synchronous wheel 233. With the above scheme, during use, in the conveying process, the first servo motor 232 starts, and the output shaft of the first servo motor 232 directly drives the active synchronous wheel 231 to rotate. The active synchronous wheel 231 drives the driven synchronous wheel 233 to rotate through the tensioned synchronous belt 234. Since the driven synchronous wheel 233 is fixed on the first fixed shaft 221, the driven synchronous wheel 233 drives the conveying roller 22 to rotate using the first fixed shaft 221.

[0063] Preferably, by Figures 1-4 As shown, this embodiment further includes: a bearing 8, a semi-circular clamp 9, and a locking bolt 10. The inner ring of the bearing 8 is fixedly connected to the first fixed shaft 221. A semi-circular groove 211 for the bearing 8 to be embedded is provided at the top of the support plate 21. The semi-circular clamp 9 is located at the top of the support plate 21 and is used to press down the bearing 8. The locking bolt 10 passes through the semi-circular clamp 9 and is fixedly connected to the support plate 21 by thread engagement. With the above solution, when installing the conveyor roller 22, the bearing 8 is embedded in the semi-circular groove 211. At this time, the outer wall of the bearing 8 is tightly attached to the inner wall of the semi-circular groove 211, forming a mechanical constraint.

[0064] Next, place the semi-circular clamp 9 on the top of the support plate 21, and clamp the outer ring of the bearing 8 by the semi-circular clamp 9 and the semi-circular groove 211. Finally, tighten the locking bolt 10 to achieve stable installation of the conveyor roller 22, and also facilitate the disassembly and maintenance of the conveyor roller 22.

[0065] Preferably, by Figures 1-4As shown, in this embodiment, it further includes: a positioning post 11, which is fixed to the outer wall of the semi-circular groove 211. A positioning hole 91 is provided on the semi-circular clamp 9 for the positioning post 11 to pass through. With the above solution, when the conveyor roller 22 is installed, the positioning post 11 passes through the positioning hole 91 to position the installation position of the semi-circular clamp 9, and at the same time forms a mechanical constraint on the outer ring of the bearing 8, thereby improving the stability of the bearing 8.

[0066] It should be noted that both servo motor 232 and servo motor 65 are commercially available standard equipment with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0067] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0068] Components not described in detail in this article are existing technologies.

[0069] The working principle and usage process of this utility model: When the conveying equipment of this utility model is used, before the equipment is started, the initial height of the two lifting plates 3 is adjusted by the adjustment mechanism 6 to adjust the lifting plates 3 to a suitable initial height, so that the tension roller 5 installed between the two mounting blocks 4 is in a preset initial position. At this time, a certain gap is formed between the tension roller 5 and the conveying roller 22 on the two sets of conveying mechanisms 2, which provides a suitable initial tension foundation for the subsequent conveying of PVC rolls.

[0070] When the equipment starts working, the rotational power mechanism 23 of the two sets of conveying mechanisms 2 drives the conveying rollers 22 to rotate, thereby driving the PVC rolls to be conveyed forward on the conveying rollers 22;

[0071] During the conveying process, the PVC roll will pass under the tension roller 5. The tension roller 5 will tension the roll. At this time, the tension of the roll will be transmitted to the mounting block 4 through the tension roller 5. The pressure sensor 7 on the top surface of the mounting block 4 will detect this pressure signal in real time. The pressure sensor 7 will convert the pressure signal into an electrical signal and transmit it to the control system of the equipment (such as PLC or industrial computer).

[0072] The control system has a preset reasonable tension range for the PVC roll material during the conveying process. When the control system receives the signal from the pressure sensor 7, it converts it into a corresponding tension value and compares it with the preset tension range. If the detected tension value is less than the preset minimum value, it indicates that the roll material tension is insufficient, which may lead to problems such as loosening and wrinkling. At this time, the control system will issue a command to control the adjustment mechanism 6 to move, so that the two lifting plates 3 will descend synchronously to a certain height. The lifting plates 3 rise, causing the mounting block 4 and the tension roller 5 to descend together, thereby increasing the pressure of the tension roller 5 on the roll material and increasing the tension of the roll material. Conversely, if the detected tension value is greater than the preset maximum value, it indicates that the roll material tension is too high, which may lead to excessive stretching or even breakage of the roll material. The control system will then control the adjustment mechanism 6 to raise the lifting plates 3, and the tension roller 5 will rise accordingly, reducing the pressure on the roll material and reducing the tension of the roll material.

[0073] During the adjustment mechanism 6, the pressure sensor 7 continuously monitors the tension change in real time and feeds the new signal back to the control system, forming a closed-loop control circuit. This circuit can dynamically adjust the tension of the PVC roll during the conveying process in real time, keeping it within a preset reasonable range. This ensures that the PVC roll remains stable during the production and conveying process, avoiding the impact on product quality and production efficiency due to improper tension.

[0074] In addition, the symmetrical distribution of the two lifting plates 3 and the rotatable installation of the tension roller 5 between the two mounting blocks 4 enable the tension roller 5 to apply tension to the roll material evenly, avoiding the problem of roll material deviation or uneven tension caused by uneven force on one side. The pressure sensor 7 is fixed to the top surface of the mounting block 4, which can accurately detect the change in the tension of the roll material by the tension roller 5, providing accurate feedback signals to the control system and ensuring the accuracy and timeliness of tension adjustment.

[0075] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PVC roll production and conveying equipment with automatic tension adjustment, comprising a base (1), characterized in that: Further includes: Two sets of conveying mechanisms (2) are symmetrically fixed to the top of the base (1). Each set includes two symmetrically distributed support plates (21), a conveying roller (22) rotatably installed between the two support plates (21), and a rotary power mechanism (23) for driving the conveying roller (22) to rotate. Two lifting plates (3) are symmetrically distributed, and rectangular holes (31) are provided on the lifting plates (3). Mounting block (4), which is located inside the rectangular hole (31); Tensioning roller (5), which is rotatably mounted between the two mounting blocks (4); Adjustment mechanism (6), the adjustment mechanism (6) is used to adjust the initial height of the two lifting plates (3); Pressure sensor (7) is fixed to the top surface of the mounting block (4).

2. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 1, characterized in that: The adjustment mechanism (6) includes: Two fixing plates (61) are symmetrically fixed to the top surface of the base (1); Two movable seats (62) are symmetrically distributed, and their bottom surfaces are attached to the top surface of the base (1); Two sets of flip support rods (63) are symmetrically distributed, and the bottom end of the flip support rod (63) is hinged to the movable seat (62) and the top end is hinged to the lifting plate (3). A bidirectional threaded screw (64) is rotatably mounted between the two fixed plates (61) and connected to the movable seat (62) by thread engagement. The second servo motor (65) is fixed to the outer wall of the fixed plate (61) and is used to drive the bidirectional threaded screw (64) to rotate.

3. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 2, characterized in that: The adjustment mechanism (6) further includes: Two guide rods (66) are symmetrically fixed between the two fixed plates (61) and pass through the movable seat (62).

4. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 1, characterized in that: Further includes: Two second fixed shafts (51) are symmetrically fixed at both ends of the tension roller (5), and the second fixed shafts (51) pass through the mounting block (4) to form a rotating structure.

5. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 1, characterized in that: Further includes: Two fixed shafts (221) are symmetrically fixed at both ends of the conveying roller (22), and the fixed shafts (221) pass through the support plate (21) to form a rotating structure.

6. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 5, characterized in that: The rotary power mechanism (23) includes: Active synchronizing wheel (231), which is rotatably connected to the support plate (21); Servo motor No. 1 (232) is fixed to the outer wall of the support plate (21) and is used to drive the active synchronous wheel (231) to rotate. Driven synchronous pulley (233), the driven synchronous pulley (233) is fixed on the first fixed shaft (221); Synchronous belt (234), which is tensioned by the driving synchronous pulley (231) and the driven synchronous pulley (233).

7. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 5, characterized in that: Further includes: The bearing (8) has its inner ring fixedly connected to the first fixed shaft (221), and a semi-circular groove (211) for the bearing (8) to be embedded is provided at the top of the support plate (21). A semi-circular clamp (9) is located at the top of the support plate (21) and is used to press down the bearing (8). Locking bolt (10) passes through the semi-circular clamp (9) and is fixedly connected to the support plate (21) by thread engagement.

8. The PVC roll production and conveying equipment with automatic tension adjustment according to claim 7, characterized in that: Further includes: The positioning post (11) is fixed to the outer wall of the semi-circular groove (211), and a positioning hole (91) is provided on the semi-circular clamp (9) for the positioning post (11) to pass through.

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