Winding tension balancing device of PVC (polyvinyl chloride) film calender

Abstract

The utility model discloses a PVC film calender rolling tension balancing device which comprises a rack, a rolling roller, a tension detection mechanism and a controller, the upper surface of the rack is fixedly connected with a mounting plate, the side surface of the mounting plate is fixedly connected with a rolling motor, the output end of the rolling motor is fixedly connected with a shaft, and the rolling roller is fixedly connected with a tension detection mechanism. And the side surface of the shaft is movably connected with a winding roller. Through the first tension detection roller and the second tension detection roller which are arranged in parallel, the tension of the PVC film can be detected in real time, a detection signal is transmitted to the controller, the controller controls the rotating speed of the winding motor according to a preset tension range, dynamic and accurate control over the winding tension of the PVC film is achieved, and the winding speed of the PVC film is improved. The problem of unbalanced tension in the winding process is effectively solved, the winding quality of the PVC film is improved, and the distance between the first tension detection roller and the second tension detection roller is adjustable, so that the device is suitable for PVC films with different thicknesses.

Description

Technical Field

[0001] This utility model belongs to the field of PVC film acoustic field technology, specifically relating to a PVC film calender winding tension balancing device. Background Technology

[0002] In the production process of PVC film, the calender is one of the key pieces of equipment, and its winding process has a significant impact on the quality of PVC film.

[0003] Existing PVC film calenders often experience tension imbalance during the winding process. When the winding tension is too high, the PVC film is prone to stretching and deformation, affecting its dimensional accuracy and physical properties. Conversely, when the winding tension is too low, the PVC film is not tightly wound on the winding roller, resulting in loose winding, which is detrimental to subsequent transportation and storage. Currently, PVC film winding devices cannot dynamically adjust the tension in real time according to the winding situation, making it difficult to ensure tension balance during the PVC film winding process. This leads to unstable product quality and low production efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution: a PVC film calender winding tension balancing device, including a frame, winding rollers, tension detection mechanism and controller;

[0005] A mounting plate is fixedly connected to the upper surface of the frame, a winding motor is fixedly connected to the side surface of the mounting plate, a shaft is fixedly connected to the output end of the winding motor, and a winding roller is movably connected to the side surface of the shaft. The tension detection mechanism includes a first tension detection roller, a second tension detection roller, and a pressure sensor. A groove is provided on the upper surface of the frame, and the pressure sensor is fixedly installed in the groove. A first bearing seat is fixedly connected to the upper surface of the frame, and a second bearing seat is fixedly connected to the upper surface of the frame. The second bearing seat includes a lower seat fixed to the frame, a hydraulic telescopic rod fixed to the lower seat, and an upper seat fixedly connected to the output end of the hydraulic telescopic rod.

[0006] Through the above technical solution, the basic structure of the frame construction device is used. The winding motor drives the winding roller to rotate via the shaft to realize the winding of PVC film. In the tension detection mechanism, the first tension detection roller and the second tension detection roller, together with the pressure sensor, can accurately detect the tension of the film in real time and feed the data back to the controller. The controller adjusts the speed of the winding motor according to the data to maintain tension balance and ensure the winding quality of PVC film. The second bearing seat uses a hydraulic telescopic rod to connect the upper seat body and the lower seat body, which can flexibly adjust the height of the second tension detection roller, making the device suitable for use with PVC film of different thicknesses and improving the versatility of the equipment.

[0007] The present invention is further configured such that a limiting plate is fixedly connected to the side surface of the shaft, and a plug rod is symmetrically fixedly connected to the side surface of the limiting plate. Through holes are provided at both ends of the winding roller, and the plug rod is located in the through hole.

[0008] Through the above technical solution, the limiting plate and insert rod on the shaft side surface cooperate with the through holes at both ends of the take-up roller to realize the quick installation and disassembly of the take-up roller, which facilitates the replacement of take-up rollers of different specifications and meets diverse production needs. At the same time, the insert rod restricts the axial movement of the take-up roller, ensuring the stability of the winding process and preventing the problem of irregular winding caused by deviation.

[0009] The present invention is further configured such that a limiting frame is fixedly connected to the upper surface of the frame, a limiting groove is provided on the upper surface of the limiting frame, an enlarged groove is provided on the upper surface of the limiting frame, the limiting groove and the enlarged groove are connected, and the width of the enlarged groove is 1.2 times the width of the limiting groove.

[0010] The present invention is further configured such that an electric telescopic rod is fixedly connected to the inner side wall of the limiting frame, an installation shaft is fixedly connected to the output end of the electric telescopic rod, a limiting block is rotatably connected to the side surface of the installation shaft, an opening is provided through the side surface of the limiting frame, and the width of the limiting block is consistent with the inner diameter of the limiting groove.

[0011] Through the above technical solution, the electric telescopic rod on the inner wall of the limiting frame drives the mounting shaft and the limiting block, which can flexibly control the position of the limiting block in the limiting groove, thereby limiting the installed take-up roller and preventing the take-up roller from moving laterally during operation, effectively ensuring the stability of the transmission. When replacing the take-up roller, the electric telescopic rod drives the limiting block to move out of the limiting groove, so that the limiting block is located in the enlarged groove and away from the shaft. Rotate the limiting block so that it is located in the opening, and then the take-up roller can be disassembled.

[0012] The present invention is further configured such that the side surface of the shaft penetrates the limiting block, and the number of pressure sensors is two, which are respectively located below the first bearing seat and the second bearing seat.

[0013] Through the above technical solution, the shaft-through limiting block further enhances the transmission stability and ensures effective power transmission. The two pressure sensors are placed below the first bearing seat and the second bearing seat respectively, which can simultaneously detect the force on the first tension detection roller and the second tension detection roller. Through comparative analysis, the tension distribution of PVC film can be judged more accurately, avoiding detection deviations caused by uneven film material or equipment errors, and improving the tension control accuracy and reliability.

[0014] The present invention is further configured such that the first tension detection roller is fixedly connected to the first bearing seat via a bearing, and the second tension detection roller is fixedly connected to the second bearing seat via a bearing.

[0015] The present invention is further configured such that a T-shaped block is fixedly connected to the upper surface of the lower seat, a T-shaped groove is provided through the lower surface of the upper seat, and the side surface of the T-shaped block is movably connected to the T-shaped groove.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention utilizes two parallel tension detection rollers, a first tension detection roller and a second tension detection roller, to detect the tension of the PVC film in real time and transmit the detection signal to a controller. The controller then controls the rotation speed of the winding motor according to a preset tension range, achieving dynamic and precise control of the PVC film winding tension. This effectively solves the problem of tension imbalance during winding, improves the winding quality of the PVC film, and the distance between the first and second tension detection rollers is adjustable, making the device suitable for PVC films of different thicknesses. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of a PVC film calender winding tension balancing device according to the present invention;

[0019] Figure 2 This is a second-view structural diagram of a PVC film calender winding tension balancing device according to the present invention;

[0020] Figure 3 This is a partially exploded view of the winding tension balancing device for a PVC film calendering machine according to this utility model;

[0021] Figure 4 This is a partial structural schematic diagram of a PVC film calender winding tension balancing device according to the present invention;

[0022] Figure 5 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 6 yes Figure 1 Enlarged view of point B in the middle.

[0024] Reference numerals: 1. Frame; 2. Mounting plate; 3. Rewinding motor; 4. Shaft; 5. Limiting plate; 51. Insert rod; 6. Rewinding roller; 61. Through hole; 7. Limiting frame; 8. Limiting groove; 9. Enlarged groove; 10. Electric telescopic rod; 11. Opening; 12. Mounting shaft; 13. Limiting block; 14. Controller; 15. Groove; 16. Pressure sensor; 17. First bearing seat; 18. First tension detection roller; 19. Second bearing seat; 191. Lower seat; 192. Upper seat; 193. Hydraulic telescopic rod; 20. Second tension detection roller; 21. T-slot; 22. T-block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] like Figures 1-6 As shown, a PVC film calender winding tension balancing device of this embodiment includes a frame 1, a winding roller 6, a tension detection mechanism and a controller 14.

[0027] The controller 14, the winding motor 3, the electric telescopic rod 10, the pressure sensor 16, and the hydraulic telescopic rod 193 are all electrically connected to an external power source. The winding motor 3, the electric telescopic rod 10, the pressure sensor 16, and the hydraulic telescopic rod 193 are all electrically connected to the controller 14. This is prior art and is known to those skilled in the art.

[0028] A mounting plate 2 is fixedly connected to the upper surface of the frame 1. A winding motor 3 is fixedly connected to the side surface of the mounting plate 2. After the winding motor 3 is started, it can drive the shaft 4 and the winding roller 6 to rotate, thereby winding the PVC film. The output end of the winding motor 3 is fixedly connected to the shaft 4. The side surface of the shaft 4 is movably connected to the winding roller 6. A limit plate 5 is fixedly connected to the side surface of the shaft 4. Insert rods 51 are symmetrically fixedly connected to the side surface of the limit plate 5. Through holes 61 are provided through both ends of the winding roller 6. The insert rods 51 are located in the through holes 61.

[0029] The limiting plate 5 and the insert rod 51 cooperate to limit the installed take-up roller 6, so that the take-up roller 6 can rotate synchronously with the rotation of the shaft 4.

[0030] A limiting frame 7 is fixedly connected to the upper surface of the frame 1. A limiting groove 8 is provided on the upper surface of the limiting frame 7. An enlarged groove 9 is provided on the upper surface of the limiting frame 7. The limiting groove 8 and the enlarged groove 9 are connected. The width of the enlarged groove 9 is 1.2 times the width of the limiting groove 8. An electric telescopic rod 10 is fixedly connected to the inner side wall of the limiting frame 7. An installation shaft 12 is fixedly connected to the output end of the electric telescopic rod 10. A limiting block 13 is rotatably connected to the side surface of the installation shaft 12. An opening 11 is provided through the side surface of the limiting frame 7. The width of the limiting block 13 is the same as the inner diameter of the limiting groove 8. The side surface of the shaft 4 passes through the limiting block 13.

[0031] When the limiting block 13 is located in the limiting groove 8, its side surface contacts the limiting groove 8. At this time, the shaft 4 passes through the limiting block 13. The limiting block 13 supports the shaft 4 and limits the winding roller 6 installed on the shaft 4, preventing the winding roller 6 from having lateral displacement during the winding process and affecting the winding of the PVC film. When the limiting block 13 is located in the enlarged groove 9 under the drive of the electric telescopic rod 10, the limiting block 13 moves away from the shaft 4 and releases the support for the shaft 4 and the limitation on the winding roller 6. At this time, the limiting block 13 can rotate around the mounting shaft 12, so that the limiting block 13 is located in the opening 11. At this time, the winding roller 6 can be removed from the shaft 4.

[0032] The tension detection mechanism includes a first tension detection roller 18, a second tension detection roller 20, and a pressure sensor 16. A groove 15 is provided on the upper surface of the frame 1, and the pressure sensor 16 is fixedly installed in the groove 15. A first bearing seat 17 is fixedly connected to the upper surface of the frame 1, and a second bearing seat 19 is fixedly connected to the upper surface of the frame 1. The second bearing seat 19 includes a lower seat body 191 fixed on the frame 1, a hydraulic telescopic rod 193 fixed on the lower seat body 191, and an upper seat body 192 fixedly connected to the output end of the hydraulic telescopic rod 193. There are two pressure sensors 16, which are located below the first bearing seat 17 and the second bearing seat 19, respectively. The first tension detection roller 18 is fixedly connected to the first bearing seat 17 through a bearing, and the second tension detection roller 20 is fixedly connected to the second bearing seat 19 through a bearing.

[0033] The gap formed between the first tension detection roller 18 and the second tension detection roller 20 is used for the PVC film to pass through. The first tension detection roller 18, the second tension detection roller 20 and the pressure sensor 16 work together to accurately detect the tension of the PVC film in real time and transmit the result to the controller 14. The controller 14 maintains tension balance by controlling the speed of the winding motor 3. The second bearing seat 19 is connected to the upper seat 191 and the lower seat 192 by a hydraulic telescopic rod 193, which can flexibly adjust the height of the second tension detection roller 20, so that the device is suitable for use with PVC films of different thicknesses and improves the versatility of the equipment.

[0034] A T-shaped block 22 is fixedly connected to the upper surface of the lower seat 191, and a T-shaped groove 21 is provided through the lower surface of the upper seat 192. The side surface of the T-shaped block 22 is movably connected to the T-shaped groove 21.

[0035] The working principle of this utility model is as follows: When the PVC film enters the winding stage, it first passes through the tension detection mechanism composed of the first tension detection roller 18 and the second tension detection roller 20. The PVC film is located between the first tension detection roller 18 and the second tension detection roller 20. Under the tension generated by the rotation of the winding roller 6, the PVC film applies pressure to the first tension detection roller 18 and the second tension detection roller 20. The pressure sensor 16 installed in the groove 15 below the first bearing seat 17 and the second bearing seat 19 can detect the pressure change in real time and convert the pressure signal into an electrical signal and transmit it to the controller 14.

[0036] After receiving the signal from the pressure sensor 16, the controller 14 calculates and analyzes the actual tension value of the PVC film and compares it with the preset tension range. If the actual tension value is greater than the preset upper tension limit, the controller 14 will send a command to the winding motor 3 to reduce the speed of the winding motor 3. The winding motor 3 drives the winding roller 6 to decelerate through the shaft 4, thereby reducing the tension on the PVC film and lowering the tension. If the actual tension value is less than the preset lower tension limit, the controller 14 will command the winding motor 3 to increase the speed, increase the tension of the winding roller 6 on the PVC film, and increase the tension, thereby realizing the dynamic adjustment of the winding tension of the PVC film.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A PVC film calender winding tension balancing device, characterized in that: Includes a frame (1), a take-up roll (6), a tension detection mechanism, and a controller (14); A mounting plate (2) is fixedly connected to the upper surface of the frame (1), a winding motor (3) is fixedly connected to the side surface of the mounting plate (2), a shaft (4) is fixedly connected to the output end of the winding motor (3), and a winding roller (6) is movably connected to the side surface of the shaft (4). The tension detection mechanism includes a first tension detection roller (18), a second tension detection roller (20), and a pressure sensor (16). A groove (15) is provided on the upper surface of the frame (1), and the pressure sensor (16) is fixedly installed in the groove (15). A first bearing seat (17) is fixedly connected to the upper surface of the frame (1), and a second bearing seat (19) is fixedly connected to the upper surface of the frame (1). The second bearing seat (19) includes a lower seat body (191) fixed on the frame (1), a hydraulic telescopic rod (193) fixed on the lower seat body (191), and an upper seat body (192) fixedly connected to the output end of the hydraulic telescopic rod (193).

2. The PVC film calender winding tension balancing device according to claim 1, characterized in that, A limiting plate (5) is fixedly connected to the side surface of the shaft (4), and a rod (51) is symmetrically fixedly connected to the side surface of the limiting plate (5). Through holes (61) are provided at both ends of the winding roller (6), and the rod (51) is located in the through hole (61).

3. The PVC film calender winding tension balancing device according to claim 1, characterized in that, A limiting frame (7) is fixedly connected to the upper surface of the frame (1). A limiting groove (8) is provided on the upper surface of the limiting frame (7). An enlarged groove (9) is provided on the upper surface of the limiting frame (7). The limiting groove (8) and the enlarged groove (9) are connected. The width of the enlarged groove (9) is 1.2 times the width of the limiting groove (8).

4. The PVC film calender winding tension balancing device according to claim 3, characterized in that, An electric telescopic rod (10) is fixedly connected to the inner side wall of the limiting frame (7). An installation shaft (12) is fixedly connected to the output end of the electric telescopic rod (10). A limiting block (13) is rotatably connected to the side surface of the installation shaft (12). An opening (11) is provided through the side surface of the limiting frame (7). The width of the limiting block (13) is consistent with the inner diameter of the limiting groove (8).

5. The PVC film calender winding tension balancing device according to claim 4, characterized in that, The side surface of the shaft (4) is penetrated by the limiting block (13), and there are two pressure sensors (16) located below the first bearing seat (17) and the second bearing seat (19), respectively.

6. The PVC film calender winding tension balancing device according to claim 1, characterized in that, The first tension detection roller (18) is fixedly connected to the first bearing seat (17) via a bearing, and the second tension detection roller (20) is fixedly connected to the second bearing seat (19) via a bearing.

7. The PVC film calender winding tension balancing device according to claim 1, characterized in that, The upper surface of the lower seat (191) is fixedly connected to a T-shaped block (22), and the lower surface of the upper seat (192) is provided with a T-shaped groove (21) through it. The side surface of the T-shaped block (22) is movably connected to the T-shaped groove (21).

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