Variable-tension winding mechanism of automatic plastic surface winding machine
By introducing a variable tension winding mechanism into the plastic surface winding machine, the current pressure of the reel is dynamically adjusted, and the internal folding problem of film is solved, and the quality improvement of film winding is achieved.
Patent Information
- Application Number
- CN202422510789.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-16
AI Technical Summary
During the winding process of existing plastic surface winding machines, especially when large-scroll film products, wrinkles are prone to occur inside the film, and the existing tension control methods cannot effectively solve it.
Using a variable tension winding mechanism, the pressure adjustment device and the film coil diameter measurement device are applied by the current reel shaft to dynamically adjust the pressure of the current reel shaft to the winding roller to maintain the constant pressure of the film to the winding shaft and eliminate wrinkles.
The constant pressure of the film on the winding shaft during the winding process is achieved, which eliminates the wrinkles inside the film and improves the winding quality of the film.
Smart Images
Figure CN223239302U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coiling machine equipment, in particular to a variable tension winding mechanism of an automatic plastic surface coiling machine. Background Art
[0002] Existing surface winders in the plastics industry primarily utilize single-roll surface winding. However, during the winding process, varying film thickness and speed can cause wrinkles within the wound film, impacting quality. Currently, most manufacturers use tension sensors and tension controllers to control the speed of the winding roller to achieve constant tension. However, this is ineffective for films with large roll diameters, particularly those with thicknesses between 0.03mm and 0.12mm. This is because film hardness varies depending on the film formulation. With thinner soft films, the weight increases as the roll diameter increases, causing the film to collapse internally and wrinkle. Therefore, a device is needed to maintain a constant force applied to the winding shaft during the winding process to prevent wrinkles within the film. Utility Model Content
[0003] The utility model provides a variable tension winding mechanism of an automatic plastic surface winder, which solves the defects existing in the above-mentioned background technology in the prior art.
[0004] The technical solution of the present utility model is achieved as follows:
[0005] The variable tension winding mechanism of the automatic plastic surface winder includes a current winding shaft arranged in front of the winding roller on the winder, the current winding shaft is pressed on the winding roller, and also includes a current winding shaft pressure adjustment device and a film roll diameter measuring device. The current winding shaft pressure adjustment device is connected to the current winding shaft, and the current winding shaft pressure adjustment device dynamically adjusts the pressure applied by the current winding shaft on the winding roller according to the film roll diameter obtained by the film roll diameter measuring device.
[0006] Preferably, the pressure regulating device for the current winding shaft includes pressure forks symmetrically arranged on both ends of the current winding shaft; a pressure fork connecting rod is connected to the frames on both sides of the winder, and the ends of the two pressure forks are rotatably connected to the two ends of the pressure fork connecting rod, and a fork groove is formed on the top of the pressure fork, and the two ends of the current winding shaft are placed in the fork groove. It also includes two pressure regulating cylinders, which are respectively fixed on the frames on both sides of the winder, and the piston rods of the pressure regulating cylinders are fixedly connected to the pressure forks. By adjusting the cylinder pressure, the pressure applied by the current winding shaft on the winding roller is adjusted.
[0007] Preferably, a winding shaft roller is provided on the frames on both sides of the coiler, and the two ends of the current winding shaft pass through the fork groove and are placed on the winding shaft roller; the current winding shaft moves along the winding shaft roller;
[0008] Preferably, the winding shaft roller forms an upward slope from the end close to the winding roller to the outside.
[0009] Preferably, the slope of the winding roller is 7°-10°.
[0010] Preferably, the film roll diameter measuring device includes a film guide roller located on the side of the winding roller, the two ends of the film guide roller are connected to the frames on both sides, and also includes a mounting base fixed on the frame on one side of the winder, the mounting base is connected to a support shaft, the outer end of the support shaft is connected to a support plate, a rubber wheel is connected to the support plate, the rubber wheel is connected to an encoder through a coupling, and the rubber wheel is attached to the film guide roller.
[0011] In summary, the advantages of the present invention are:
[0012] The variable tension winding mechanism of the automatic plastic surface winder of the present invention is provided with a current winding shaft pressure adjustment device and a film roll diameter measuring device; the force applied by the current winding shaft to the winding roller is reduced according to the size of the film roll diameter, thereby maintaining a constant pressure on the winding shaft during the winding process, thereby eliminating the internal wrinkles of the film. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0014] Figure 1 This is a schematic structural diagram of the variable tension winding mechanism of the automatic plastic surface coiling machine of the present utility model;
[0015] Figure 2 for Figure 1 Installation structure diagram;
[0016] Figure 3 for Figure 2 Middle A is a schematic diagram of the enlarged structure;
[0017] Figure 4 for Figure 2 Schematic diagram of the local structure in another direction;
[0018] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of B. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] Example 1
[0021] like Figure 1-5 As shown, the variable tension winding mechanism of the automatic plastic surface winder includes a current winding shaft 101 arranged in front of the winding roller 100 on the winder. When the film is wound, the current winding shaft is pressed on the winding roller by the pressure and the component of its own vertical weight. Under the action of friction, the film will be wound on the winding shaft, thereby completing the winding; the current winding shaft is pressed on the winding roller, and also includes a current winding shaft pressure adjustment device and a film roll diameter measuring device. The current winding shaft pressure adjustment device is connected to the current winding shaft. The current winding shaft pressure adjustment device dynamically adjusts the pressure applied by the current winding shaft on the winding roller according to the film roll diameter obtained by the film roll diameter measuring device. Specifically, when the film roll diameter measuring device measures that the roll diameter gradually increases, the pressure applied by the current winding shaft on the winding roller is reduced due to the increase in self-generated weight; so as to keep the force applied by the film on the winding shaft at a constant pressure during the winding process.
[0022] The pressure regulating device for the current winding shaft includes a pressure fork 200 symmetrically arranged on both ends of the current winding shaft; a pressure fork connecting rod 201 is connected to the frames on both sides of the winder, and the ends of the two pressure forks are rotatably connected to the two ends of the pressure fork connecting rod, and a fork groove 202 is formed on the top of the pressure fork. The two ends of the current winding shaft are placed in the fork groove, and it also includes two pressure regulating cylinders 203. The cylinder bodies of the two pressure regulating cylinders are respectively fixed on the frames on both sides of the winder, and the piston rods of the pressure regulating cylinders are fixedly connected to the middle part of the pressure fork. By adjusting the cylinder pressure, the pressure of the pressure fork is adjusted, and then the pressure applied to the winding roller by the current winding shaft is adjusted. It also includes a winding shaft roller 204 arranged on the frame on both sides of the winder, and the two ends of the current winding shaft pass through the fork groove and are placed on the winding shaft roller; the current winding shaft moves along the winding shaft roller as the roll diameter increases, and the winding shaft roller forms an upward slope from the end close to the winding roller to the outside, and the slope of the winding shaft roller is 7°-10°. This structural design allows the current winding shaft to rely on its own gravity to apply a certain pressure to the film, which makes it easier to adjust the pressure.
[0023] When the film roll diameter becomes larger and larger, the current winding shaft moves outward due to the force exerted by the film on it; at this time, the pressure of the pressure regulating cylinder is reduced, thereby reducing the pressure of the current winding shaft on the film, so that the force exerted by the film on the winding shaft is a constant pressure, eliminating the internal wrinkles of the film.
[0024] The film roll diameter measuring device includes a film guide roller 300 located on the side of the winding roller, and the two ends of the film guide roller are connected to the frames on both sides. It also includes a mounting base 301 fixed on the frame on one side of the winder, and the mounting base is connected to a support shaft 302. The outer end of the support shaft is connected to a support plate 303, and a rubber wheel 304 is connected to the support plate. The rubber wheel is connected to an encoder 305 through a coupling, and the rubber wheel is attached to the film guide roller.
[0025] When winding, the film passes through the film guide roller along the tangential direction of the film guide roller. The film drives the film guide roller to rotate, and the rubber wheel moves with the film guide roller. The length of the film is calculated based on the number of rotations of the rubber wheel, and the winding diameter is then calculated based on the rotation speed of the winding roller.
[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. The variable tension winding mechanism of the automatic plastic surface coiler is characterized by: It includes a current winding shaft arranged in front of the winding roller on the winder, the current winding shaft is pressed on the winding roller, and also includes a current winding shaft pressure adjustment device and a film roll diameter measuring device. The current winding shaft pressure adjustment device is connected to the current winding shaft, and the current winding shaft pressure adjustment device dynamically adjusts the pressure applied by the current winding shaft on the winding roller according to the film roll diameter obtained by the film roll diameter measuring device.
2. The variable tension winding mechanism of the automatic plastic surface coiling machine according to claim 1, characterized in that: The pressure regulating device for the current winding shaft includes pressure forks symmetrically arranged on both ends of the current winding shaft; a pressure fork connecting rod is connected to the frames on both sides of the winder, and the ends of the two pressure forks are rotatably connected to the two ends of the pressure fork connecting rod, and a fork groove is formed on the top of the pressure fork, and the two ends of the current winding shaft are placed in the fork groove. It also includes two pressure regulating cylinders, which are respectively fixed on the frames on both sides of the winder, and the piston rods of the pressure regulating cylinders are fixedly connected to the pressure forks. By adjusting the cylinder pressure, the pressure applied by the current winding shaft on the winding roller is adjusted.
3. The variable tension winding mechanism of the automatic plastic surface winder according to claim 2, characterized in that: A winding shaft roller is provided on the frames on both sides of the winder, and the two ends of the current winding shaft pass through the fork groove and are placed on the winding shaft roller; the current winding shaft moves along the winding shaft roller.
4. The variable tension winding mechanism of the automatic plastic surface winder according to claim 3, characterized in that: The winding shaft roller forms an oblique upward slope from the end close to the winding roller to the outside.
5. The variable tension winding mechanism of the automatic plastic surface coiling machine according to claim 4, characterized in that: The slope of the reel roller is 7°-10°.
6. The variable tension winding mechanism of the automatic plastic surface winder according to claim 1, characterized in that: The film roll diameter measuring device includes a film guide roller located on the side of the winding roller, and the two ends of the film guide roller are connected to the frames on both sides. It also includes a mounting base fixed on the frame on one side of the winder, and the mounting base is connected to a support shaft, and the outer end of the support shaft is connected to a support plate, and a rubber wheel is connected to the support plate, and the rubber wheel is connected to an encoder through a coupling, and the rubber wheel is attached to the film guide roller.