Tension control film winding device
Through the combined structure of the tensioning roller group and the tension adjustment roller, multiple tension detection rollers are used to detect and adjust the film tension, which solves the problems of slow tension adjustment response and sudden changes in traditional film winding devices and achieves the stability of film winding quality.
Patent Information
- Application Number
- CN202422426288.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Traditional film winding devices have slow response and serious tension mutation during the tension adjustment process, resulting in unstable winding quality.
The system adopts a combined structure of a tensioning roller group, a tension adjustment roller and multiple tension detection rollers. The second tension detection roller detects the change in the surface tension of the film. The first tension detection roller quickly responds and adjusts the swing of the tension adjustment roller, thereby adjusting the film length between the tensioning roller group and the winding roller to achieve smooth tension control.
It achieves precise control of film tension during winding, avoids sudden changes in tension, and ensures the stability and consistency of winding quality.
Smart Images
Figure CN223372386U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film winding equipment, in particular to a tension-controlled film winding device. Background Art
[0002] During film winding, as the film's winding radius gradually increases, if the winding roller runs at its original speed, the film's linear speed gradually increases, creating a speed difference with the preceding film pinch roller, which in turn causes a change in film surface tension. Film tension is typically controlled by adjusting the winding roller's speed based on film tension detection. However, this method suffers from slow response and severe tension abrupt changes, resulting in unstable winding quality. Summary of the Invention
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a tension-controlled film winding device to solve the problem that sudden changes in tension adjustment of traditional film winding devices affect the quality of film winding.
[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a tension-controlled film winding device, comprising a film feeding roller and a winding roller, a tensioning roller group is arranged between the film feeding roller and the winding roller, a tension adjusting roller is arranged between the tensioning roller group and the winding roller, a first tension detection roller is arranged between the tension adjusting roller and the winding roller, the tension adjusting roller is connected to the driving device through a rocker arm, and the detection signal output end of the first tension detection roller is electrically connected to the control signal receiving end of the driving device; the tensioning roller group is provided with a plurality of tensioning rollers, and a second tension detection roller is arranged between the plurality of tensioning rollers, and the detection signal output end of the second tension detection roller is electrically connected to the speed control module of the winding roller.
[0005] Furthermore, the plurality of tensioning rollers of the tensioning roller group are arranged in a straight line, the plurality of tensioning rollers are attached to the same side of the film, and the second tension detection roller is attached to the other side of the film relative to the tensioning roller.
[0006] Furthermore, the winding roller is in contact with the other side of the film relative to the tensioning roller, the film passing through the tensioning roller group runs vertically, and the winding roller is located on the side of the tensioning roller away from the film.
[0007] Furthermore, the tension adjustment roller and the winding roller are in contact with the same side of the film. When the tension adjustment roller is in contact with the film, the other side of the film is in contact with the first tension detection roller.
[0008] Furthermore, the film direction between the tension adjustment roller and the winding roller is horizontal.
[0009] Furthermore, a pressure wheel is provided above the winding roller, and the pressure wheel is vertically raised and lowered, and the pressure wheel presses the outer film on the film roll.
[0010] Beneficial Effects: The utility model provides a tension-controlled film winding device that detects the surface tension of the film through a second tension detection roller, thereby accurately controlling the speed adjustment of the winding roller and achieving effective tension regulation. The first tension detection roller quickly detects the tension change of the film near the winding roller, and immediately activates the tension adjustment roller to swing according to the change in tension, thereby adjusting the film length between the tensioning roller group and the winding roller, compensating for the tension change during the delay period, making the tension adjustment smoother, avoiding sudden changes in film tension, and ensuring the film winding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the overall structural position distribution of an embodiment of the utility model. DETAILED DESCRIPTION
[0012] The present invention will be further described below in conjunction with the accompanying drawings.
[0013] As attached Figure 1 The tension-controlled film winding device includes a film feeding roller and a winding roller 1, a tensioning roller group 2 is arranged between the film feeding roller and the winding roller 1, a tension adjusting roller 3 is arranged between the tensioning roller group 2 and the winding roller 1, a first tension detection roller 5 is arranged between the tension adjusting roller 3 and the winding roller 1, the tension adjusting roller 3 is connected to the driving device through a rocker arm, and the detection signal output end of the first tension detection roller 5 is electrically connected to the control signal receiving end of the driving device; the tensioning roller group 2 is provided with a plurality of tensioning rollers, and a second tension detection roller 4 is arranged between the plurality of tensioning rollers, and the detection signal output end of the second tension detection roller 4 is electrically connected to the speed control module of the winding roller 1.
[0014] This solution utilizes a tensioning roller assembly to create a flat, unrolled film section, facilitating the use of a second tension detection roller 4 to measure the film's surface tension, thereby precisely controlling the speed of the winding roller and achieving effective tension regulation. The first tension detection roller rapidly detects changes in film tension near the winding roller, instantly oscillating the tension adjustment roller based on the tension changes. This oscillation of the tension adjustment roller adjusts the film length between the tensioning roller assembly and the winding roller. As the film's winding radius increases and its linear speed increases, the tension adjustment roller's oscillation gradually reduces the film length between the tensioning roller assembly and the winding roller, thereby accommodating the gradual increase in the film's linear speed. Simultaneously, the second tension detection roller detects changes in tension and decelerates the winding roller. As the winding roller decelerates, the film's linear speed decreases, and tension begins to decrease. When the tension falls below a preset value, the winding roller slowly stops decelerating, and the tension adjustment roller begins to oscillate in the opposite direction, gradually increasing the film length between the tensioning roller assembly and the winding roller. The oscillation stops when the tension reaches a preset range. Since the tension detection roller detects the tension change, calculates the change value, and then generates a corresponding speed control signal to the winding roller to complete the speed adjustment, the entire process takes a certain amount of time to complete. During this process, the radius of the film roll continues to increase, so the speed adjustment is delayed. The swing of the tension adjustment roller to adjust the length of the local film segment helps to compensate for the tension change during the delay period, making the tension adjustment more gradual, avoiding sudden changes in film tension, and ensuring the quality of film winding. The swing direction of the tension adjustment roller is controlled by the increase or decrease of tension, without the need for numerical calculations, resulting in a faster response time.
[0015] The multiple tensioning rollers of the tensioning roller assembly 2 are arranged in a straight line, contacting the same side of the film. The second tension detection roller 4 contacts the opposite side of the film, opposite the tensioning rollers. The tensioning rollers on either side of the second tension detection roller are symmetrically arranged around the second tension detection roller, ensuring that the film sections before and after the second tension detection rollers are straight. This ensures that the second tension detection rollers can accurately reflect changes in film tension, thereby enabling precise adjustment of the winding roller speed.
[0016] Preferably, the winding roller 1 is in contact with the other side of the film relative to the tensioning roller, and the film passing through the tensioning roller group 2 is oriented vertically. The winding roller 1 is located on the side of the tensioning roller facing away from the film. The tension adjustment roller 3 and the winding roller 1 are in contact with the same side of the film. When the tension adjustment roller 3 is in contact with the film, the other side of the film is in contact with the first tension detection roller 5. The film direction between the tension adjustment roller 3 and the winding roller 1 is horizontal. This allows the entire film to move downward, then diagonally upward, and finally be wound horizontally after being sent out from the film feed roller. This facilitates the complete tensioning of the corresponding section of the second tension detection roller, making the detection value closer to the actual tension value, facilitating easier length adjustment of the corresponding section of the tension adjustment roller, and enabling the first tension detection roller to sensitively detect tension fluctuations at the winding location.
[0017] A pinch roller 6 is provided above the winding roller 1. The pinch roller 6 is vertically raised and lowered to compress the outer film layer against the film roll. This ensures that the outermost film layer always lies flat against the outside of the film roll and does not wrinkle due to speed adjustment. Changes in film tension caused by temporary tension changes occur between the tension adjustment roller and the winding roller, allowing for adaptive length adjustment through the swing of the tension adjustment roller.
[0018] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A tension-controlled film winding device, characterized in that: The invention comprises a film feeding roller and a winding roller (1), wherein a tensioning roller group (2) is arranged between the film feeding roller and the winding roller (1), a tension adjusting roller (3) is arranged between the tensioning roller group (2) and the winding roller (1), a first tension detection roller (5) is arranged between the tension adjusting roller (3) and the winding roller (1), the tension adjusting roller (3) is connected to a driving device through a rocker arm, and a detection signal output end of the first tension detection roller (5) is electrically connected to a control signal receiving end of the driving device; the tensioning roller group (2) is provided with a plurality of tensioning rollers, a second tension detection roller (4) is arranged between the plurality of tensioning rollers, and a detection signal output end of the second tension detection roller (4) is electrically connected to a speed control module of the winding roller (1).
2. The tension-controlled film winding device according to claim 1, characterized in that: The plurality of tensioning rollers of the tensioning roller group (2) are arranged in a straight line, and the plurality of tensioning rollers are attached to the same side of the film, and the second tension detection roller (4) is attached to the other side of the film relative to the tensioning roller.
3. The tension-controlled film winding device according to claim 2, characterized in that: The winding roller (1) is in contact with the other side of the film relative to the tensioning roller, and the film passing through the tensioning roller group (2) runs vertically. The winding roller (1) is located on the side of the tensioning roller away from the film.
4. The tension-controlled film winding device according to claim 3, characterized in that: The tension adjustment roller (3) and the winding roller (1) are in contact with the same side of the film. When the tension adjustment roller (3) is in contact with the film, the other side of the film is in contact with the first tension detection roller (5).
5. The tension-controlled film winding device according to claim 1, characterized in that: The film direction between the tension adjustment roller (3) and the winding roller (1) is horizontal.
6. The tension-controlled film winding device according to claim 1, characterized in that: A pressure wheel (6) is provided above the winding roller (1), and the pressure wheel (6) is vertically raised and lowered, and the pressure wheel (6) presses the outer film on the film roll.