Tension-adjustable film winding device
By combining the tension adjustment mechanism and the elastic reset structure, the problem of unstable tension adjustment in the film winding machine is solved, and tension stability is achieved during the film winding process, ensuring winding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN NANHAI DISTRICT KESI RUIDI MATERIAL TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-19
AI Technical Summary
Existing film winding machines have difficulty effectively adjusting tension, resulting in the film being too tight or too loose during the winding process, which affects the winding quality.
The tension adjustment mechanism consists of multiple sets of adjustment rollers and an elastic reset structure. The tension of the film is adjusted by rotating the adjustment rollers to keep the tension of the film stable during the winding process.
This achieves tension stability of the film during the winding process, avoiding the phenomenon of the film being too tight or too loose, and ensuring winding quality.
Smart Images
Figure CN224377185U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of film winding technology, specifically to a tension-adjustable film winding device. Background Technology
[0002] Films are typically made from polymers through casting. The film manufacturing process requires continuous forming and conveying. During conveying, tension changes can cause the film to become too tight or too loose. If the film is too tight, it will be overstretched and deformed. If the film is too loose, wrinkles will appear inside the film roll after winding. During the film winding process, the winding speed can be controlled to avoid the film becoming too tight or too loose. However, it is difficult to adjust the winding speed in real time according to the tension changes. Therefore, it is difficult to deal with the phenomenon of the film becoming too tight or too loose due to tension changes.
[0003] Based on the above, Chinese Patent Publication No. CN208561140U discloses a controllable tension film winding machine, including a base. The outer walls of both ends of the top side of the base are bolted to first support columns, and the top outer walls of the two first support columns on opposite sides are rotatably connected to guide rollers via bearings. The outer walls of both ends of the top of the base are bolted to first electrically controlled telescopic rods, and the top outer walls of the first electrically controlled telescopic rods are bolted to mounting blocks. The outer walls of the two mounting blocks on opposite sides are rotatably connected to the same horizontally placed extrusion roller, and the outer walls of both ends of the extrusion roller are screwed to tension sensors.
[0004] The aforementioned patent document discloses a winding machine capable of adjusting film tension. This winding machine is equipped with a first electrically controlled telescopic rod, a pressure roller, and a tension sensor. The tension of the film moving on the pressure roller is adjusted by the reciprocating motion of the movable end of the first electrically controlled telescopic rod. However, if the film experiences significant tension fluctuations, a larger stroke of the first electrically controlled telescopic rod is required for tension adjustment. When the stroke of the movable end of the first electrically controlled telescopic rod increases, its stability in supporting the film decreases, leading to swaying during film transport. Furthermore, the space occupied by the first electrically controlled telescopic rod also increases. Based on the aforementioned shortcomings of this winding machine, it can be seen that there is still room for improvement. Utility Model Content
[0005] To address the technical deficiencies in the background technology, this utility model proposes a tension-adjustable film winding device, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:
[0006] An adjustable tension film winding device includes a frame, a winding roller, and a tension adjustment mechanism. The frame consists of a base and a mounting frame extending upward from the top of the base. The winding roller is movably connected to the mounting frame, and a drive structure is provided at one end of the winding roller near the mounting frame.
[0007] The tension adjustment mechanism is located on one side of the take-up roller. The tension adjustment mechanism consists of at least two sets of adjustment rollers. Each adjustment roller set includes the following structure: a rotating roller, the end of which is movably connected to the mounting frame, an elastic reset structure between the end of the rotating roller and the mounting frame, and two connecting rods perpendicular to the rotating roller at the end of the rotating roller. The ends of the two connecting rods are respectively movably connected to a first guide roller and a second guide roller. The two adjacent sets of adjustment rollers are mirror-symmetrical.
[0008] As a further technical solution of this utility model, a first pressure roller is provided on one side of the first guide roller, and a second pressure roller is provided on one side of the second guide roller. The first pressure roller and the second pressure roller are respectively located on opposite sides of the adjusting roller group.
[0009] As a further technical solution of this utility model, the adjusting roller group is provided with limiting rods on both sides opposite to each other, and the two limiting rods are distributed vertically and respectively abut against the surfaces of the two connecting rods.
[0010] As a further technical solution of this utility model, a pressing structure is provided on one side of the take-up roller. The pressing structure includes the following structure: a rotating roller, the end of which is movably connected to the mounting frame, a pressing torsion spring between the end of the rotating roller and the mounting frame, and a pressing bracket extending to the top of the take-up roller on one side of the rotating roller. The pressing bracket is provided with a pressing roller and an inlet roller that are both parallel to the take-up roller.
[0011] As a further technical solution of this utility model, a cutting structure is provided between the take-up roller and the tension adjustment mechanism. The cutting structure includes the following structure: a material support roller, which is parallel to the take-up roller; a cutting slide rail is provided above the material support roller; a cutting slider is provided at the bottom of the cutting slide rail; and a cutting blade is provided at the bottom of the cutting slider.
[0012] As a further technical solution of this utility model, the material support roller is provided with a clamping structure on both sides. The clamping structure is composed of a first clamping plate and a second clamping plate distributed vertically. The end of the first clamping plate is fixedly connected to the mounting frame. The bottom of the second clamping plate is provided with a telescopic push rod that causes the second clamping plate to move back and forth vertically. One end of the telescopic push rod is fixedly connected to the frame.
[0013] As a further technical solution of this utility model, the winding roller is provided with a fastening screw at the end away from the mounting frame, and a fastening block is sleeved on the surface of the fastening screw. The fastening block has threaded holes that match the fastening screw on both sides.
[0014] The beneficial effects of this utility model are as follows:
[0015] This utility model discloses a film tension-adjustable winding device. During the film winding process, the film is first conveyed by a tension adjustment mechanism and then wound by a winding roller. The film is wound in an S-shape between the adjustment roller groups in the tension adjustment mechanism. When the tension of the film fluctuates, the force exerted by the film on the adjustment roller group will change. The elastic reset structure will cause the adjustment roller group to rotate and change the length of the film wound in the tension adjustment mechanism. The force exerted by the elastic reset structure to rotate the adjustment roller group remains constant. Through the constant force, the film is always conveyed in a straight state and the tension of the film is kept stable. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a tension-adjustable film winding device. Figure 1 .
[0017] Figure 2 This is a schematic diagram of a tension-adjustable film winding device. Figure 2 .
[0018] Figure 3 The main view of a tension-adjustable film winding device. Figure 1 .
[0019] Figure 4 The main view of a tension-adjustable film winding device. Figure 2 .
[0020] Figure 5 The main view of a tension-adjustable film winding device. Figure 3 .
[0021] Figure 6 yes Figure 3 A partial schematic diagram of point A in the middle.
[0022] The components are as follows: 1-Frame, 11-Base, 12-Mounting frame, 2-Take-up roller, 21-Drive structure, 22-Fasting screw, 23-Fasting block, 3-Adjusting roller group, 31-Rotating roller, 32-Elastic reset structure, 33-Connecting rod, 34-First guide roller, 35-Second guide roller, 36-First pressure roller, 37-Second pressure roller, 38-Limiting rod, 4-Pressure structure, 41-Rotating shaft roller, 42-Pressure torsion spring, 43-Pressure bracket, 44-Pressure roller, 45-Inlet roller, 5-Cutting structure, 51-Supporting roller, 52-Cutting slide rail, 53-Cutting slider, 54-Cutting blade, 6-Clamping structure, 61-First clamping plate, 62-Second clamping plate, 63-Telescopic push rod, 7-Film. Detailed Implementation
[0023] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.
[0024] An adjustable tension film winding device includes a frame 1, a winding roller 2, and a tension adjustment mechanism. The frame 1 consists of a base 11 and a mounting frame 12 extending upward from the top of the base 11. The winding roller 2 is movably connected to the mounting frame 12. A drive structure 21 is provided at one end of the winding roller 2 near the mounting frame 12.
[0025] The tension adjustment mechanism is located on one side of the take-up roller 2. The tension adjustment mechanism consists of at least two sets of adjustment roller groups 3. The adjustment roller group 3 includes the following structure: a rotating roller 31, the end of the rotating roller 31 is movably connected to the mounting frame 12, an elastic reset structure 32 is provided between the end of the rotating roller 31 and the mounting frame 12, and the end of the rotating roller 31 is also provided with two connecting rods 33 perpendicular to the rotating roller 31. The ends of the two connecting rods 33 are respectively movably connected to a first guide roller 34 and a second guide roller 35; the two adjacent sets of adjustment roller groups 3 are mirror symmetrical.
[0026] This utility model discloses a winding device that can adjust the tension of a film, referring to... Figure 1 , Figure 2 In this winding device, the frame 1 serves as a structure for fixing and supporting the various components of the winding device, the base 11 is used to place the winding device stably in the film production workshop, the mounting frame 12 is used to install and fix components such as the winding roller 2 and the tension adjustment mechanism, the drive structure 21 is preferably a servo motor and is used to drive the winding roller 2 to rotate, and the surface of the winding roller 2 is fitted with a core for winding the film into a roll; the winding device is placed near the side of the film casting machine, and the tension adjustment mechanism is located near the side of the film output from the casting machine. After the casting machine forms and cools the film, it is transported to the tension adjustment mechanism to stabilize the tension during the film transport process. Finally, the winding roller 2 drives the core to rotate so that the film is gradually wound on the surface of the core and forms a film roll;
[0027] It should be noted that the tension adjustment mechanism of this utility model preferably consists of four sets of adjustment roller groups 3, and these four sets of adjustment roller groups 3 are sequentially designated as the first roller group, the second roller group, the third roller group, and the fourth roller group. The path of the film 7 in the tension adjustment mechanism is as follows: after the film 7 enters the tension adjustment mechanism, it is wound in an S-shape along the first guide roller 34 away from the casting machine and the second guide roller 35 near the casting machine from the first roller group. Then the film 7 leaves the first roller group and enters the second roller group. In the second roller group, the film 7 is wound in an S-shape along the second guide roller 35 away from the casting machine and the first guide roller 34 near the casting machine from the second roller group. Then the film 7 leaves the second roller group and enters the third roller group. The way the film 7 is wound in the third roller group is the same as that in the first roller group. Then the film 7 leaves the third roller group and enters the fourth roller group. The way the film 7 is wound in the fourth roller group is the same as that in the second roller group. Finally, the film 7 leaves the fourth roller group and is wound on the surface of the take-up roller 2 for winding.
[0028] Based on the path of the film 7 in the tension adjustment mechanism, the film 7 extends in an S-shape between the four sets of adjusting rollers 3 of the tension adjustment mechanism. The working principle of the tension adjustment structure is as follows: when the tension of the film 7 is stable, referring to... Figure 3 In the four sets of adjusting rollers 3, the first guide roller 34 and the second guide roller 35 are both distributed vertically; when the tension of the film 7 decreases, the output speed of the film 7 from the casting machine is usually greater than the winding speed, referring to... Figure 4 The elastic reset structure 32 causes the first and third roller groups to rotate counterclockwise, and the second and fourth roller groups to rotate clockwise, increasing the length of the film 7 wound in the tension adjustment mechanism, thus keeping the film 7 taut and maintaining stable tension. When the tension of the film 7 increases, the output speed of the film 7 from the casting machine is usually less than the winding speed, and the force exerted by the film 7 on the adjusting roller group 3 increases. Figure 5 The first and third roller groups rotate clockwise, while the second and fourth roller groups rotate counterclockwise, which reduces the length of the film 7 wound in the tension adjustment mechanism and keeps the tension of the film 7 stable.
[0029] It should be noted that the elastic reset structure 32 is preferably a constant torsion spring. The first guide roller 34 and the second guide roller 35 in the adjusting roller group 3 rotate synchronously with the rotating roller 31 via the connecting rod 33, and are simultaneously subjected to the reaction force of the elastic reset structure 32. When the tension adjusting mechanism is in the reset state, the first guide roller 34 and the second guide roller 35 in the four adjusting roller groups 3 are distributed left and right. Specifically, the first guide roller 34 in the first roller group is located closer to the second roller group, the first guide roller 34 in the second roller group is located closer to the first roller group, the first guide roller 34 in the third roller group is located closer to the fourth roller group, and the first guide roller 34 in the fourth roller group is located closer to the third roller group. At this time, the film 7 has the longest winding length in the tension adjusting mechanism. When the film 7 begins to wind up and the tension stabilizes, the tension adjusting mechanism will be as follows: Figure 3 As shown, all four sets of adjusting rollers 3 will rotate with the change in tension of the film 7, while the elasticity of the elastic reset structure 32 keeps the tension of the film 7 stable.
[0030] As one of the preferred embodiments of this utility model, refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 A first pressure roller 36 is provided on one side of the first guide roller 34, and a second pressure roller 37 is provided on one side of the second guide roller 35. The first pressure roller 36 and the second pressure roller 37 are located on opposite sides of the adjusting roller group 3. During the conveying process in the tension adjusting mechanism, the film needs to pass between the first guide roller 34 and the first pressure roller 36 and between the second guide roller 35 and the second pressure roller 37. The first pressure roller 36 and the second pressure roller 37 can ensure that the film can always be in close contact with the surface of the first guide roller 34 and the second guide roller 35 during the rotation of the adjusting roller group 3.
[0031] As one of the preferred embodiments of this utility model, refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 The regulating roller group 3 is provided with limiting rods 38 on both sides. The two limiting rods 38 are distributed vertically and abut against the surfaces of the two connecting rods 33 respectively. The two limiting rods 38 are used to limit the rotation angle of the regulating roller group 3. By limiting the two limiting rods 38, the regulating roller group 3 can remain stationary when there is no external force. The maximum rotation angle of the regulating roller group 3 is 180°, which avoids excessive film winding on the surface of the regulating roller group 3 due to excessive rotation angle, thereby ensuring normal film conveying in the tension adjustment mechanism.
[0032] As one of the preferred embodiments of this utility model, refer to Figure 1 , Figure 3 , Figure 4 , Figure 5A pressure structure 4 is provided on one side of the take-up roller 2. The pressure structure 4 includes the following structures: a rotating roller 41, the end of which is movably connected to the mounting frame 12; a pressure torsion spring 42 is provided between the end of the rotating roller 41 and the mounting frame 12; a pressure bracket 43 extending to the top of the take-up roller 2 is provided on one side of the rotating roller 41; the pressure bracket 43 is provided with a pressure roller 44 and an inlet roller 45, both parallel to the take-up roller 2; the pressure torsion spring 42 can rotate the rotating roller 41 through its elastic force, and the rotating roller 41 rotates... The direction of movement is to make the pressure support 43 move from top to bottom toward the take-up roller 2. When the take-up roller 2 is winding the film, the torque of the pressure torsion spring 42 driving the rotating shaft roller 41 to rotate will be transmitted to the pressure roller 44 through the pressure support 43, so that the pressure roller 44 presses on the surface of the film roll wound on the surface of the take-up roller 2, making the surface of the film roll obtained after winding smoother. The guide roller 45 is used to adjust the direction of the film entering the take-up roller 2 to avoid the phenomenon of material jamming during the film winding process.
[0033] As one of the preferred embodiments of this utility model, refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 A cutting structure 5 is provided between the take-up roller 2 and the tension adjustment mechanism. The cutting structure 5 includes the following structure: a material support roller 51, which is parallel to the take-up roller 2; a cutting slide rail 52 is provided above the material support roller 51; a cutting slider 53 is provided at the bottom of the cutting slide rail 52; a cutting blade 54 is provided at the bottom of the cutting slider 53; the cutting slide rail 52 and the cutting slider 53 together form a set of electric slide rail structures; a clamping structure 6 is provided on both sides of the material support roller 51; the clamping structure 6 is composed of a first clamping plate 61 and a second clamping plate 62 distributed vertically; the end of the first clamping plate 61 is fixedly connected to the mounting frame 12; the bottom of the second clamping plate 62 is provided with a telescopic push rod 63 that causes the second clamping plate 62 to move up and down; one end of the telescopic push rod 63 is fixedly connected to the frame 1; the telescopic push rod 63 is preferably an electric push rod.
[0034] This invention uses a cutting structure 5 to cut the film, and a support roller 51 to support the film at the cutting structure 5, keeping the film taut. After the film roll is wound up, the second clamping plates 62 in both clamping structures 6 move upward under the pushing force of the telescopic push rod 63 until the second clamping plates 62 and the first clamping plates 61 clamp the film. The two clamping structures 6 will clamp the film on both sides of the cutting structure 5. Then, the cutting slider 53 will slide along the cutting slide rail 52 and cut the film through the cutting blade 54 at the bottom of the cutting slide rail 52. After one end of the cut is wound into the roll, the roll can be unloaded. Then, the other end of the cut is guided to the winding roller 2 for the winding of the next roll of film.
[0035] As one of the preferred embodiments of this utility model, refer to Figure 1The take-up roller 2 has a fastening screw 22 at one end away from the mounting frame 12. A fastening block 23 is fitted on the surface of the fastening screw 22. Threaded holes matching the fastening screw 22 are passed through the opposite sides of the fastening block 23. When the core used for winding the film is fitted onto the surface of the take-up roller 2, the fastening block 23 is screwed into the end of the take-up roller 2 along the fastening screw 22, so that the fastening block 23 can clamp the core. This can prevent the core from rotating along the surface of the take-up roller 2 during the winding process, ensuring that the film can be properly wound on the surface of the core.
[0036] In summary, this utility model discloses a film tension-adjustable winding device. During the film winding process, the film is first conveyed by the tension adjustment mechanism and then wound by the winding roller 2. The film is wound in an S-shape between the adjustment roller groups in the tension adjustment mechanism. When the tension of the film fluctuates, the force exerted by the film on the adjustment roller group 3 will change. The elastic reset structure 32 will cause the adjustment roller group 3 to rotate and change the length of the film wound in the tension adjustment mechanism. The force exerted by the elastic reset structure 32 to rotate the adjustment roller group 3 remains constant. Through the constant force, the film is always conveyed in a straight state and the tension of the film is kept stable.
[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A film winding device with adjustable tension, comprising a frame (1), a winding roll (2), a tension adjustment mechanism, characterized in that, The frame (1) consists of a base (11) and a mounting frame (12) extending upward from the top of the base (11). The take-up roller (2) is movably connected to the mounting frame (12). The take-up roller (2) has a drive structure (21) at one end near the mounting frame (12). The tension adjustment mechanism is located on one side of the take-up roller (2). The tension adjustment mechanism consists of at least two sets of adjustment roller groups (3). The adjustment roller group (3) includes the following structure: a rotating roller (31), the end of the rotating roller (31) is movably connected to the mounting frame (12), an elastic reset structure (32) is provided between the end of the rotating roller (31) and the mounting frame (12), and the end of the rotating roller (31) is also provided with two connecting rods (33) perpendicular to the rotating roller (31). The ends of the two connecting rods (33) are respectively movably connected to a first guide roller (34) and a second guide roller (35); the two adjacent sets of adjustment roller groups (3) are mirror symmetrical.
2. The tension-adjustable film winding device according to claim 1, characterized in that, The first guide roller (34) has a first pressure roller (36) on one side, and the second guide roller (35) has a second pressure roller (37) on one side. The first pressure roller (36) and the second pressure roller (37) are located on opposite sides of the adjusting roller group (3).
3. The tension-adjustable film winding device according to claim 1, characterized in that, The adjusting roller group (3) is provided with limiting rods (38) on both sides opposite to each other. The two limiting rods (38) are distributed vertically and respectively abut against the surfaces of the two connecting rods (33).
4. The tension-adjustable film winding device according to claim 1, characterized in that, The take-up roller (2) is provided with a pressing structure (4) on one side. The pressing structure (4) includes the following structure: a rotating roller (41), the end of the rotating roller (41) is movably connected to the mounting frame (12), a pressing torsion spring (42) is provided between the end of the rotating roller (41) and the mounting frame (12), and a pressing bracket (43) extending to the top of the take-up roller (2) is provided on one side of the rotating roller (41). The pressing bracket (43) is provided with a pressing roller (44) and an inlet roller (45) that are parallel to the take-up roller (2).
5. The tension-adjustable film winding device according to claim 1, characterized in that, A cutting structure (5) is provided between the take-up roller (2) and the tension adjustment mechanism. The cutting structure (5) includes the following structure: a material support roller (51), which is parallel to the take-up roller (2). A cutting slide rail (52) is provided above the material support roller (51), and a cutting slider (53) is provided at the bottom of the cutting slide rail (52). A cutting blade (54) is provided at the bottom of the cutting slider (53).
6. The tension-adjustable film winding device according to claim 5, characterized in that, The material support roller (51) is provided with clamping structures (6) on both sides. The clamping structure (6) is composed of a first clamping plate (61) and a second clamping plate (62) distributed vertically. The end of the first clamping plate (61) is fixedly connected to the mounting frame (12). The bottom of the second clamping plate (62) is provided with a telescopic push rod (63) that makes the second clamping plate (62) move up and down. One end of the telescopic push rod (63) is fixedly connected to the frame (1).
7. The tension-adjustable film winding device according to claim 1, characterized in that, The take-up roller (2) has a fastening screw (22) at one end away from the mounting frame (12). A fastening block (23) is fitted on the surface of the fastening screw (22). The fastening block (23) has threaded holes that match the fastening screw (22) on both sides opposite to each other.