A continuous uncoiler
By using adjustment and lifting mechanisms in the unwinding device, the position of the guide rollers is kept stable, which solves the problems of film sheet deviation and unstable tension during unwinding, and realizes stable tension control and continuous production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 西尼尔(山东)环保科技有限公司
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-28
AI Technical Summary
During the unwinding process of large-format film sheets, as the diameter of the roll decreases, the change in the positional relationship between the roll and the guide rollers leads to film deviation and unstable tension, affecting production continuity and product quality.
The unwinding roller, guide roller, and tension roller are arranged in parallel. Through adjustment and lifting mechanisms, the guide roller moves synchronously with the change of roll diameter, keeping the sheet at the same angle when entering the subsequent process section and reducing the risk of deviation.
This improved the stability of tension control, reduced film deviation, and ensured production continuity and product quality.
Smart Images
Figure CN224563793U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sheet unwinding, specifically a continuous unwinding device. Background Technology
[0002] During the unwinding process of large-format film sheets, as the roll is gradually pulled out, its diameter decreases, causing changes in the positional relationship and tension between the pull-out position and the guide rollers. First, as the roll diameter decreases, the film's exit angle gradually tilts downwards. If the guide rollers are fixed in position, the film may slip to one side due to lateral forces, resulting in deviation (serpentine movement). Second, the wrap angle of the film on the guide rollers changes significantly, leading to uneven contact pressure and unstable tension, potentially causing intermittent loosening and tightening, resulting in lateral displacement or wrinkles. These issues pose potential risks during feeding, hindering subsequent continuous production and affecting product quality and production consistency. Utility Model Content
[0003] The purpose of this invention is to provide a continuous unwinding device that improves the stability of tension control during the unwinding process and reduces the risk of deviation.
[0004] To achieve the above objectives, this utility model employs the following technical solution:
[0005] A continuous unwinding device includes an unwinding roller, a guide roller, and a tension roller arranged in parallel. The tension roller is positioned directly below the guide roller. Two guide rollers are symmetrically arranged on both sides of the tension roller. Each end of the guide roller is provided with an adjustment mechanism. Each adjustment mechanism includes an inclined guide rod, with its bottom end close to the tension roller and its top end away from the tension roller. A slide table is slidably fitted on the inclined guide rod. The slide table has an upward and outward tilting stroke along the inclined guide rod. Both ends of the guide roller are rotatably connected to the slide table on the same side.
[0006] The set of adjustment mechanism has two inclined guide rods, which are respectively set on both sides of the slide table. The two sides of the slide table are respectively fixed with inclined sliding sleeves that are slidably connected to the inclined guide rods. The middle part of the slide table is provided with a bearing seat that is installed at one end of the guide roller.
[0007] It also includes a base plate, one end of which is fixed to a base, and the other end of which is fixed to a vertical plate. The top and bottom ends of the inclined guide rod are respectively provided with a first mounting block, which is used to install and fix it on the base or the vertical plate.
[0008] The adjustment mechanism also includes an adjustment cylinder body. An adjustment cylinder rod is telescopically fitted to the top of the adjustment cylinder body. A horizontal frame is fixedly installed at the top of the adjustment cylinder rod. The horizontal frame extends horizontally and is perpendicular to the guide roller. A sliding hole runs through the horizontal frame along its length. A connecting rod that slides through the sliding hole is slidably fitted to it. The connecting rod is a circular straight rod and is parallel to the guide roller. An extension part extending in the same direction as the inclined guide rod is provided below the slide table. There are two connecting rods, and the two ends of the connecting rods are respectively fixed to the bottom of the extension part on the same side.
[0009] It also includes a base plate, one end of which is fixed to a base, and the other end of which is fixed to a vertical plate. The unwinding roller is centrally mounted on the upper part of the base. The guide roller and tension roller are installed between the base and the vertical plate. The middle part of the base plate is provided with a mounting frame, which is a T-shaped support frame. The adjusting cylinder is fixed in the middle of the mounting frame. Vertical sliding sleeves are fixed at both ends of the mounting frame. Vertical guide rods that slide vertically through the vertical sliding sleeves are engaged with them. The top end of the vertical guide rods is fixed to the bottom of the horizontal frame.
[0010] The tensioning roller is rotatably equipped with lifting sliders at both ends. When the guide roller moves upward and outward, the lifting sliders have an upward stroke.
[0011] The lifting slider has symmetrical lifting guide rods at both ends. The lifting slider has lifting sleeves on both sides that pass through and slide with the lifting guide rods. The lifting guide rods have a fixedly installed lifting cylinder body below them. The top of the lifting cylinder body is fitted with a lifting cylinder rod that extends and retracts. The top of the lifting cylinder rod is fixed to the lifting slider.
[0012] It also includes a base plate, one end of which is fixed to a base, and the other end of which is fixed to a vertical plate. The top and bottom ends of the lifting guide rod are respectively provided with second mounting blocks, which are used to install and fix the rod on the base or the vertical plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This device changes the position of the guide rollers on both sides. When the roll diameter decreases, the rollers are raised and moved away from the roll center. This keeps the wrap angle of the first guide roller that contacts the unrolled sheet basically unchanged, so that the sheet always enters the subsequent process section at the same or approximately the same angle. This improves the stability of tension control and reduces the risk of deviation. Attached Figure Description
[0015] Figure 1 This is an overall schematic diagram of the present invention.
[0016] Figure 2 This is a schematic diagram of the internal components of this utility model.
[0017] Figure 3 This is a schematic diagram of the usage state of this utility model.
[0018] Figure 4 This is a front view of the utility model.
[0019] Figure 5 This is a top view of the utility model.
[0020] Figure 6 This is a utility model Figure 5 A schematic diagram of the structure in the CC section.
[0021] The labels shown in the attached diagram:
[0022] 1. Base plate; 2. Base; 3. Vertical plate; 4. Unwinding roller; 5. Tensioning roller; 6. Guide roller; 7. Slide table; 8. Inclined guide rod; 9. First mounting block; 10. Inclined sliding sleeve; 11. Extension; 12. Connecting rod; 13. Vertical guide rod; 14. Horizontal frame; 15. Adjusting cylinder; 16. Mounting frame; 17. Lifting guide rod; 18. Lifting slider; 19. Lifting cylinder; 20. Second mounting block; 21. Partition plate. Detailed Implementation
[0023] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.
[0024] Unless otherwise specified, the instruments, reagents, and materials used in the following embodiments are all conventional instruments, reagents, and materials already available in the prior art and can be obtained through legitimate commercial channels. Unless otherwise specified, the experimental methods and detection methods used in the following embodiments are all conventional experimental methods and detection methods already available in the prior art.
[0025] Example:
[0026] This uncoiling device includes a base plate 1, which is used to assist in the installation and support of the entire equipment components. A base 2 is fixed to one end of the base plate 1, and a vertical plate 3 is fixed to the other end of the base plate 1.
[0027] The base 2 is used to install electromechanical components such as motors and controllers.
[0028] An unwinding roller 4 is rotatably mounted at the top center of the base 2. One end of the roller shaft of the unwinding roller 4 is rotatably mounted on the base 2 through a bearing seat and is connected to the motor inside the base 2 through a reducer to control the rotation speed and power.
[0029] Below the unwinding roller 4 is a tensioning roller 5, and the axis of the tensioning roller 5 is aligned vertically with that of the unwinding roller 4.
[0030] Guide rollers 6 are symmetrically arranged on both sides of the tension roller 5. The axial direction of the guide rollers 6 is parallel to that of the tension roller 5.
[0031] In order to adjust the position of the guide roller 6, an adjustment mechanism is provided at both ends of the guide roller 6. In order to adapt to the height position of the guide roller 6, the tension roller 5 is provided at both ends of the tension roller 5.
[0032] The adjustment mechanism includes a slide table 7, an inclined guide rod 8, a vertical guide rod 13, a horizontal frame 14, and an adjustment cylinder 15.
[0033] The inclined guide rod 8 of the one-side adjustment mechanism consists of two rods symmetrically arranged on both sides of the slide table 7. The top and bottom ends of the inclined guide rod 8 are respectively provided with first mounting blocks 9. The first mounting blocks 9 are used to install and fix the inclined guide rod 8 on the base 2 or the upright plate 3 to achieve fixed installation of the inclined guide rod 8. The inclined guide rod 8 is inclined, with the bottom end of the inclined guide rod 8 close to the tension roller 5 and the top end of the inclined guide rod 8 inclined outward away from the tension roller 5.
[0034] The two sides of the slide table 7 are respectively fixed with inclined sliding sleeves 10 that are slidably connected to the inclined guide rod 8. The middle part of the slide table 7 is provided with a bearing seat installed at one end of the guide roller 6, so that the two ends of the guide roller 6 are rotatably connected to the slide table 7 on the same side. Based on the constraint of the inclined sliding sleeves 10, the two guide rollers 6 are centered and close together when they are at the bottom, and they separate and shift outward as they move upward, so that the guide roller 6 has an inclined stroke that moves upward synchronously outward along the inclined guide rod 8.
[0035] A connecting rod 12 is fixed between the slides 7 at both ends of the same guide roller 6. An extension 11 is provided below the slide 7. The extension 11 is arranged parallel to the inclined guide rod 8 and does not affect the sliding of the slide 7. The two ends of the connecting rod 12 are respectively fixed to the bottom end of the extension 11. A mounting frame 16 is provided in the middle of the base plate 1. The mounting frame 16 is a T-shaped support frame. The two ends of the mounting frame 16 are respectively fixed with vertical sliding sleeves that pass through and slide with the vertical guide rod 13 to guide the lifting stroke of the vertical guide rod 13. The top end of the vertical guide rod 13 is fixed to the bottom of the horizontal frame 14. The horizontal frame 14 is a horizontally extending frame that is perpendicular to the axis of the unwinding roller 4. A sliding hole passes through the horizontal frame 14. The sliding corresponds to the length direction of the horizontal frame 14. The connecting rod 12 is a round rod. The connecting rod 12 slides through and slides horizontally with the sliding hole. The height of the guide rollers 6 on both sides is controlled by the linkage of the horizontal frame 14.
[0036] The mounting bracket 16 has a mounting position in the middle, and an adjusting cylinder 15 is fixed at the mounting position. The top of the adjusting cylinder 15 is telescopically fitted with an adjusting cylinder rod, and the top of the adjusting cylinder rod is fixed on the horizontal frame 14.
[0037] Based on the above structure, when the adjusting cylinder rod of the adjusting cylinder body 15 is pushed out, the driving horizontal frame 14 is raised, and the four sliding tables 7 on both sides are moved obliquely upward through the connecting rod 12, thereby realizing the synchronous upward and outward movement.
[0038] The lifting mechanism is located at both ends of the tensioning roller 5 and includes a lifting guide rod 17, a lifting slider 18, and a lifting cylinder 19.
[0039] The middle part of the lifting slider 18 is rotatably connected to both ends of the tension roller 5 through a bearing component. The top and bottom ends of the lifting guide rod 17 are respectively provided with second mounting blocks 20. The second mounting blocks 20 are used to install and fix on the base 2 or the upright plate 3 to realize the fixed installation of the lifting guide rod 17. The lifting guide rod 17 is vertically arranged. There are two lifting guide rods 17 on each side, which are symmetrically arranged relative to the lifting slider 18. The two sides of the lifting slider 18 are respectively fixed with lifting sleeves that pass through and slide with the lifting guide rod 17. The lifting cylinder 19 is fixed on the base plate 1. There are two lifting cylinders 19, which are respectively fixed at both ends of the tension roller 5. The top end of the lifting cylinder 19 is telescopically fitted with a lifting cylinder rod, and the top end of the lifting cylinder rod is fixed on the lifting slider 18.
[0040] Based on the above structure, the central tension roller 5 can be height-adjustable, so that the height can be adjusted accordingly as the positions of the guide rollers 6 on both sides change. When the guide rollers 6 on both sides rise, the rollers rise synchronously.
[0041] A partition 21 is provided above the base plate 1. The partition 21 is used to protect and shield various cylinders. The bottom of the partition 21 is fixed to the mounting bracket 16. The partition 21 has a clearance opening to allow for the travel position of the adjusting cylinder 15 and the lifting cylinder 19.
[0042] Based on this device, in the initial stage of unwinding, the tension roller 5 and the guide roller 6 are both located at the bottom of their respective strokes. Since the stroke of the guide roller 6 is inclined, the two guide rollers 6 are closest to each other at the bottom and are arranged close to each other on both sides of the tension roller 5.
[0043] As unwinding begins and the roll is continuously pulled out, its diameter slowly and steadily decreases. Simultaneously, the two tension rollers 5 gradually move upwards and outwards, gradually approaching the roll in height and gradually moving away from it horizontally. This minimizes changes in the tilt angle of the unwound sheet and the wrap angle on the first guide roller 6, ensuring the sheet enters subsequent processing stages at a consistent or near-constant angle. This improves tension control stability and reduces the risk of deviation. Furthermore, the symmetrical arrangement of the two guide rollers 6 and their synchronized movement prevent uneven lateral stress on the film.
Claims
1. A continuous unwinding device, characterized in that, The device includes an unwinding roller, a guide roller, and a tension roller arranged in parallel. The tension roller is positioned directly below the guide roller. There are two guide rollers symmetrically arranged on both sides of the tension roller. Each end of the guide roller is provided with an adjustment mechanism. The adjustment mechanism includes an inclined guide rod, with its bottom end close to the tension roller and its top end away from the tension roller. A slide table is slidably fitted on the inclined guide rod. The slide table has an upward and outward tilting stroke along the inclined guide rod. Both ends of the guide roller are rotatably connected to the slide table on the same side.
2. The continuous unwinding device according to claim 1, characterized in that, The set of adjustment mechanism has two inclined guide rods, which are respectively set on both sides of the slide table. The two sides of the slide table are respectively fixed with inclined sliding sleeves that are slidably connected to the inclined guide rods. The middle part of the slide table is provided with a bearing seat that is installed at one end of the guide roller.
3. The continuous unwinding device according to claim 2, characterized in that, It also includes a base plate, one end of which is fixed to a base, and the other end of which is fixed to a vertical plate. The top and bottom ends of the inclined guide rod are respectively provided with a first mounting block, which is used to install and fix it on the base or the vertical plate.
4. The continuous unwinding device according to claim 1, characterized in that, The adjustment mechanism also includes an adjustment cylinder body. An adjustment cylinder rod is telescopically fitted to the top of the adjustment cylinder body. A horizontal frame is fixedly installed at the top of the adjustment cylinder rod. The horizontal frame extends horizontally and is perpendicular to the guide roller. A sliding hole runs through the horizontal frame along its length. A connecting rod that slides through the sliding hole is slidably fitted to it. The connecting rod is a circular straight rod and is parallel to the guide roller. An extension part extending in the same direction as the inclined guide rod is provided below the slide table. There are two connecting rods, and the two ends of the connecting rods are respectively fixed to the bottom of the extension part on the same side.
5. The continuous unwinding device according to claim 4, characterized in that, It also includes a base plate, one end of which is fixed to a base, and the other end of which is fixed to a vertical plate. The unwinding roller is centrally mounted on the upper part of the base. The guide roller and tension roller are installed between the base and the vertical plate. The middle part of the base plate is provided with a mounting frame, which is a T-shaped support frame. The adjusting cylinder is fixed in the middle of the mounting frame. Vertical sliding sleeves are fixed at both ends of the mounting frame. Vertical guide rods that slide vertically through the vertical sliding sleeves are engaged with them. The top end of the vertical guide rods is fixed to the bottom of the horizontal frame.
6. The continuous unwinding device according to claim 1, characterized in that, The tensioning roller is rotatably equipped with lifting sliders at both ends. When the guide roller moves upward and outward, the lifting sliders have an upward stroke.
7. The continuous unwinding device according to claim 6, characterized in that, The lifting slider has symmetrical lifting guide rods at both ends. The lifting slider has lifting sleeves on both sides that pass through and slide with the lifting guide rods. The lifting guide rods have a fixedly installed lifting cylinder body below them. The top of the lifting cylinder body is fitted with a lifting cylinder rod that extends and retracts. The top of the lifting cylinder rod is fixed to the lifting slider.
8. The continuous unwinding device according to claim 7, characterized in that, It also includes a base plate, one end of which is fixed to a base, and the other end of which is fixed to a vertical plate. The top and bottom ends of the lifting guide rod are respectively provided with second mounting blocks, which are used to install and fix the rod on the base or the vertical plate.