Thin film unreeling device for placing and unfolding thin film roll
By using rubber or silicone tension plates and breathable holes in the film unwinding device, combined with servo motors and cylinder drives, the problems of increasing humidity and uneven tension caused by the film due to the compact limit plate are solved, and efficient and stable film unfolding is achieved.
Patent Information
- Application Number
- CN202421777667.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing film unwinding device increases humidity due to the compactness of the limiting plate, the film is prone to aging and damage, and the uniform pressure distribution cannot be achieved, which affects the unwinding efficiency and film quality.
The tension plate is made of rubber or silicone, with breathable holes, and the position of the tension plate is adjusted through the servo motor and cylinder drive piston rod, and the film roll is fixed in combination with the limit block to achieve breathability and tension control.
It improves the unwinding efficiency and stability of the film, prevents the film from being damaged due to excessive pressure, ensures tension uniformity, avoids deviation and wrinkle, and extends the service life of the film.
Smart Images
Figure CN223213487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of film processing, in particular to a film unwinding device for placing and unrolling a film roll. Background Art
[0002] In modern industrial production, film materials are highly favored due to their excellent performance and wide range of applications. Whether in electronics, packaging, printing or other industries, films play an important role. The processing and handling of films usually includes unwinding, conveying, cutting, forming and other links, among which unwinding is the first and most crucial link.
[0003] At present, in the field of devices for placing unfolded film rolls, a common technical solution is to set a dense limiting plate on the upper side of the film roll, and apply pressure to the film through the limiting plate to maintain its unfolded state. Although this method can achieve the unfolding of the film, it has obvious shortcomings. On the one hand, due to the density of the limiting plate, the air humidity between the film and the limiting plate cannot be effectively dissipated, which may cause the air humidity to increase, accelerate the aging rate of the film, and make the film material fragile and easy to break or be damaged when under pressure. On the other hand, the existing limiting plates usually adopt a rigid design, which makes it difficult to achieve uniform pressure distribution, and easily cause excessive pressure concentration in local areas, which in turn causes damage to the film in these areas, affecting the use effect and shortening the service life of the film. In addition, the fixed limiting plate cannot adjust the tension of the film in real time, which easily causes uneven film tension during the unwinding process, causing problems such as film deviation and wrinkling, seriously affecting the unwinding efficiency and film quality. Utility Model Content
[0004] The purpose of the present invention is to provide a film unwinding device for placing and unwinding a film roll, so as to solve the problems raised in the above background technology.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0006] A film unwinding device for placing an unrolled film roll, comprising: a base plate, a baffle fixed to the upper side of the base plate by bolts, a servo motor fixed to one side of the baffle, an unwinding roller fixed to the output end direction of the servo motor through a connecting rod, a film roll adhered to the outer side of the unwinding roller, a cylinder fixed to the top of the baffle, a tension plate fixed to the output end direction of the cylinder through a piston rod, and a plurality of air holes formed on the tension plate.
[0007] Preferably, the tension plate is made of rubber or silicone.
[0008] The tension plate is made of rubber or silicone, which has certain elasticity and high temperature resistance, so it can provide sufficient buffer when in contact with the film to avoid damage to the film.
[0009] Preferably, the tension plate is located directly above the unwinding roller and the film roll.
[0010] Preferably, one side of the tension plate is in close contact with the baffle.
[0011] The tension plate is in contact with one side of the baffle, thereby increasing the stability of the tension plate and forming an initial tension state.
[0012] Preferably, the ventilation holes are arranged in a rectangular array at equal intervals.
[0013] Preferably, the air holes are in the shape of diamond, ellipse, rectangle or circle.
[0014] The shape of the vent holes can be selected according to specific needs, such as diamond, oval, rectangular or circular. Different shapes can provide different pressure distribution and air permeability to adapt to films of different specifications and thicknesses.
[0015] Preferably, a thread is provided on one side of the unwinding roller, and the outer surface of the thread is fixed with a limit block by the thread of the nut.
[0016] On the thread opened on one side of the unwinding roller, a limit block fixed to the nut thread can limit the position of the film roll on the unwinding roller to prevent it from sliding or deflecting during rotation.
[0017] Compared with the prior art, the present invention provides a film unwinding device for placing an unrolled film roll, which has the following beneficial effects:
[0018] The air holes on the tension plate of the utility model ensure that a certain air permeability is maintained between the film and the tension plate when pressure is applied, which not only solves the problem of damage to the film due to excessive pressure, but also improves the unwinding efficiency of the film. The cylinder drives the piston rod to adjust the up and down movement of the tension plate, thereby realizing the control of the film tension and ensuring that the film can maintain a constant tension during the unfolding process, further solving the problem of film deviation and wrinkling caused by uneven tension, and overall ensuring the stability and flatness of the film during the unfolding process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a film unwinding device for placing an unrolled film roll proposed by the present invention;
[0020] Figure 2This is a schematic diagram of the front elevation structure of a film unwinding device for placing an unrolled film roll proposed by the present invention;
[0021] Figure 3 This is a schematic elevational structural diagram of a film unwinding device for placing an unrolled film roll proposed by the present invention;
[0022] Figure 4 This is a side elevational structural diagram of a film unwinding device for placing an unrolled film roll proposed by the present invention;
[0023] Figure 5 This is an enlarged view of node A of a film unwinding device for placing an unfolded film roll proposed by the present invention.
[0024] In the figure: 1. Bottom plate; 2. Baffle; 3. Servo motor; 4. Unwinding roller; 5. Limit block; 6. Film roll; 7. Cylinder; 8. Tension plate; 9. Air vent. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. Example
[0027] refer to Figure 1-Figure 5 A film unwinding device for placing an unrolled film roll comprises: a base plate 1, a baffle 2 is fixed to the upper side of the base plate 1 by bolts, a servo motor 3 is fixed to one side of the baffle 2, an unwinding roller 4 is fixed to the output end direction of the servo motor 3 through a connecting rod, a film roll 6 is attached to the outer side of the unwinding roller 4, a cylinder 7 is fixed to the top of the baffle 2, a tension plate 8 is fixed to the output end direction of the cylinder 7 through a piston rod, and a plurality of air holes 9 are opened on the tension plate 8.
[0028] The tension plate 8 is made of rubber or silicone.
[0029] The tension plate 8 is made of rubber or silicone, which has certain elasticity and high temperature resistance, so it can provide sufficient buffer when in contact with the film to avoid damage to the film.
[0030] The tension plate 8 is located directly above the unwinding roller 4 and the film roll 6 .
[0031] One side of the tension plate 8 is in close contact with the baffle 2 .
[0032] The tension plate 8 is in close contact with one side of the baffle 2, thereby increasing the stability of the tension plate 8 and forming an initial tension state.
[0033] The ventilation holes 9 are arranged in a rectangular array at equal intervals.
[0034] The shape of the vent holes 9 is a diamond, an ellipse, a rectangle or a circle.
[0035] The shape of the vent holes 9 can be selected according to specific needs, such as diamond, oval, rectangular or circular, etc. Different shapes can provide different pressure distribution and air permeability to adapt to films of different specifications and thicknesses.
[0036] A thread is further provided on one side of the unwinding roller 4 , and the outer surface of the thread is fixed with a limit block 5 by the thread of the nut.
[0037] On the thread opened on one side of the unwinding roller 4, a limit block 5 fixed to the nut thread can limit the position of the film roll 6 on the unwinding roller 4 to prevent it from sliding or deflecting during the rotation process.
[0038] Working principle: Please refer to Figure 1-Figure 5 As shown, first, the film roll 6 is placed on the unwinding roller 4 and fits tightly with the outer side of the unwinding roller 4. The tension plate 8 is located directly above the unwinding roller 4 and the film roll 6 and is connected to the cylinder 7 through the piston rod of the cylinder 7. At this time, the tension plate 8 is in contact with one side of the baffle 2, increasing the stability of the tension plate 8 and forming an initial tension state.
[0039] When it is necessary to start unwinding the film, the servo motor 3 is started, and the output end of the servo motor 3 drives the unwinding roller 4 to rotate through the connecting rod, thereby driving the film roll 6 to rotate, so that the film is gradually unfolded. In the process of film unfolding, the piston rod is driven by the cylinder 7 to adjust the telescopic length of the piston rod, thereby driving the tension plate 8 to move up and down. Since the tension plate 8 is made of rubber or silicone, it has certain elasticity and high temperature resistance, so it can provide sufficient buffer when it comes into contact with the film to avoid damage to the film. At the same time, the air vents 9 on the tension plate 8 can ensure that when pressure is applied, a certain air permeability can still be maintained between the film and the tension plate 8 to avoid damage to the film due to excessive pressure. At the same time, the tension plate The arrangement of 8 ensures that the film can maintain a stable path during the unfolding process. Since the tension plate 8 is in contact with one side of the baffle 2 and its position and pressure can be adjusted as needed, it can effectively prevent the film from deviating due to uneven tension or external interference. In addition, on the thread opened on one side of the unwinding roller 4, the limit block 5 fixed to the nut thread can limit the position of the film roll 6 on the unwinding roller 4 to prevent it from sliding or shifting during rotation. In addition, the shape of the air vent 9 can be selected according to specific needs, such as diamond, ellipse, rectangle or circle, etc. Different shapes can provide different pressure distribution and air permeability to adapt to films of different specifications and thicknesses.
Claims
1. A film unwinding device for placing an unrolled film roll, comprising: A bottom plate (1) is provided, wherein a baffle (2) is fixed to the upper side of the bottom plate (1) by bolts, a servo motor (3) is fixed to one side of the baffle (2), a reeling roller (4) is fixed to the output end of the servo motor (3) by a connecting rod, a film roll (6) is attached to the outer side of the reeling roller (4), and a cylinder (7) is fixed to the top of the baffle (2), characterized in that a tension plate (8) is fixed to the output end of the cylinder (7) by a piston rod, and a plurality of air holes (9) are provided on the tension plate (8).
2. A film unwinding device for placing an unrolled film roll according to claim 1, characterized in that: The material of the tension plate (8) is rubber or silicone.
3. A film unwinding device for placing an unrolled film roll according to claim 2, characterized in that: The tension plate (8) is located directly above the unwinding roller (4) and the film roll (6).
4. A film unwinding device for placing an unrolled film roll according to any one of claims 1 to 3, characterized in that: One side of the tension plate (8) is in close contact with the baffle (2).
5. The film unwinding device for placing an unrolled film roll according to claim 1, characterized in that: The vent holes (9) are arranged in a rectangular array at equal intervals.
6. A film unwinding device for placing an unrolled film roll according to claim 5, characterized in that: The shape of the air holes (9) is a diamond, an ellipse, a rectangle or a circle.
7. A film unwinding device for placing an unrolled film roll according to claim 1, characterized in that: One side of the unwinding roller (4) is also provided with a thread, and the outer surface of the thread is fixed with a limiting block (5) by the thread of the nut.