Unreeling device capable of stably tensioning and coating release film

Abstract

The utility model discloses an unwinding device capable of stably tensioning and coating a release film. The unwinding device comprises a device base, the unwinding disc is arranged on the side face of the device base in a rotary driving mode; the carrier tape shafts are arranged at equal intervals in the circumferential direction of the outer side of the unwinding disc, and the carrier tape shafts are rotationally connected with release film material rolls in a sleeving mode; the tensioning adjusting mechanism is arranged on the unwinding disc corresponding to the carrier tape shaft and comprises a positioning plate rotationally arranged on the unwinding disc through a rotary driving device, at least one first tensioning shaft and at least one second tensioning shaft which are arranged on the positioning plate and used for winding and guiding a release film, spokes which are in butt joint with a sensor are arranged on the first tensioning shaft and the second tensioning shaft, and the first tensioning shaft and the second tensioning shaft are in butt joint with the sensor. The sensor is in associated control with the rotary driving equipment; and the unwinding middle shaft is arranged in the middle of the unwinding disc, and the end of the release film is wound on the unwinding middle shaft and led out of the unwinding device. The release film unwinding device can solve the problem that when an existing unwinding device is used, an unwound release film is loose and wrinkled, and the coating quality of the subsequent process is affected.

Description

Technical Field

[0001] This utility model relates to the field of release film technology, specifically to an unwinding device for stable tensioning and coating of release film. Background Technology

[0002] Release film is a thin film that exhibits extremely light and stable release force against organic pressure-sensitive adhesives. It is made by treating the surface of the film material with ion, fluorine, or silicon. It is mainly used for attaching to the surface of products to achieve protective functions such as isolation from the outside world. Due to the release force, it adheres stably to the product surface and is easy to peel off, thereby reducing the difficulty of tearing the film. It is widely used in the field of roll materials.

[0003] Release film unwinding devices are mainly used in release film processing, such as during release film coating operations, to supply the film. In existing unwinding devices, due to the shrinking of the roll, changes in the distance between the roll and the carrier belt shaft, several tension shafts, and the unwinding center shaft, and the inability to adjust the unwinding speed in a timely manner, the unwound release film becomes loose and wrinkled, affecting the coating quality of subsequent processes. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing unwinding devices cause the release film to become loose and wrinkled during the unwinding process due to the shrinkage of the material roll, changes in the distance between the roll and the carrier belt shaft, several tension shafts, and the unwinding center shaft, and the inability to adjust the unwinding speed in a timely manner, which affects the coating quality of subsequent processes. Therefore, this invention provides an unwinding device that ensures stable tensioning and coating of the release film.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a release film tensioning and coating stabilizing unwinding device, comprising:

[0006] Device base;

[0007] The unwinding reel has its rotation drive located on the side of the device base;

[0008] Several carrier shafts are equidistantly arranged along the outer circumference of the unwinding reel, and release film rolls are rotatably sleeved on them.

[0009] The tension adjustment mechanism is disposed on the unwinding reel corresponding to the carrier belt shaft. It includes a positioning plate that is rotatably disposed on the unwinding reel by a rotary drive device, at least one first tension shaft and a second tension shaft on the positioning plate for guiding the release film winding, and spokes of docking sensors are disposed on the first tension shaft and the second tension shaft. The sensors are associated with and controlled by the rotary drive device.

[0010] An unwinding center shaft is located in the middle of the unwinding reel, and the end of the release film is wound around the unwinding center shaft and leads out to the unwinding device.

[0011] As a further description of the above technical solution:

[0012] The first tensioning shaft and the second tensioning shaft are arranged alternately along the surface of the positioning plate, and the release film is arranged in an S shape around the first tensioning shaft and the second tensioning shaft.

[0013] As a further description of the above technical solution:

[0014] The inductor is a pressure sensor arranged in the mounting groove radially opened in the first tensioning shaft and the second tensioning shaft.

[0015] As a further description of the above technical solution:

[0016] The rotary driving device is positioned inside the unwinding disc, the driving shaft of the rotary driving device penetrates through the unwinding disc and is positioned on the positioning plate, and a bearing is sleeved on the driving shaft.

[0017] As a further description of the above technical solution:

[0018] The unwinding disc is provided with an arc-shaped or ring-shaped support plate outside the driving shaft.

[0019] As a further description of the above technical solution:

[0020] The first tensioning shaft and the second tensioning shaft are provided with flanges for limiting the release film at the ends, and a reinforcing plate is sleeved and clamped on the outer side of the flanges.

[0021] As described above, due to the adoption of the above technical solution, the present application has the following beneficial effects compared with the prior art:

[0022] The unwinding device of the present application guides the unwinding and arrangement of the release film through the carrier shaft, the plurality of tensioning shafts and the unwinding central shaft, the tensioning adjusting mechanism is provided with a rotary drive, which can sense the tensioning condition of the release film of the spoke and rotate the whole tensioning shaft, away from or close to the carrier shaft and the unwinding central shaft, thereby realizing automatic tensioning control of the release film, avoiding the relaxation and wrinkling of the unwound release film due to the change of the distance between the roll and the carrier shaft, the plurality of tensioning shafts and the unwinding central shaft, and the inability to adjust the unwinding rate in time, which affects the coating quality of the subsequent process. A plurality of release film rolls can be placed on the unwinding device, after the unwinding of a single roll is completed, the unwinding disc is driven to rotate, the carrier shaft and the unwinding station can be switched, and the unwinding efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0024] Fig. 1 It is a kind of structure schematic diagram of stable unwinding device of release film tension coating.

[0025] Fig. 2 It is a kind of use state diagram of stable unwinding device of release film tension coating (hidden device base).

[0026] Fig. 3 It is a kind of structure schematic diagram of tension adjusting mechanism in stable unwinding device of release film tension coating.

[0027] Legend:

[0028] 1, device base;2, unwinding disc;21, support plate;3, carrier tape shaft;4, tension adjusting mechanism;40, rotary drive device;41, positioning plate;42, first tension shaft;43, second tension shaft;44, spoke;45, bearing;46, reinforcing plate;5, unwinding shaft;10, release film roll. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be regarded as a limitation on the present application.

[0031] Please refer to Figs. 1-3 The present application provides a technical scheme: a stable unwinding device for release film tension coating, comprising:

[0032] Device base 1:

[0033] A winding-off reel 2 is rotationally driven and arranged on the side of the device base 1;

[0034] A plurality of carrier shafts 3 are equidistantly arranged along the outer side of the winding-off reel 2, and a release film roll 10 is rotatably sleeved on the carrier shafts 3.

[0035] A tension adjusting mechanism 4 is arranged on the winding-off reel 2 in correspondence with the carrier shafts 3, and comprises a positioning plate 41 rotationally arranged on the winding-off reel 2 by a rotary driving device 40, at least one first tension shaft 42 and a second tension shaft 43 for guiding the winding of the release film on the positioning plate 41, and a spoke 44 of an inductor arranged on the first tension shaft 42 and the second tension shaft 43, wherein the inductor is controlled in association with the rotary driving device 40.

[0036] A winding-off central shaft 5 is arranged in the middle of the winding-off reel 2, and the end of the release film is wound on the winding-off central shaft 5 and led out of the winding-off device, passes through an externally arranged coating device, and is wound on a winding device.

[0037] The winding-off device of the utility model guides the winding of the release film through the carrier shafts, the plurality of tension shafts and the winding-off central shaft, the tension adjusting mechanism is rotationally arranged, can sense the tension of the release film in cooperation with the spoke, rotates the whole tension shaft, moves away from or approaches the carrier shafts and the winding-off central shaft, thereby realizes the automatic tension control of the release film, avoids the release film from being relaxed and wrinkled due to the change of the distance between the roll and the carrier shafts, the plurality of tension shafts and the winding-off central shaft and the failure of timely adjustment of the winding speed during the winding-off process, and influences the coating quality of the subsequent process.

[0038] The first tension shaft 42 and the second tension shaft 43 are alternately arranged along the surface of the positioning plate 41, and the release film is wound on the first tension shaft 42 and the second tension shaft 43 in an S shape, thereby improving the stability of the winding and tension control of the release film.

[0039] The inductor is a pressure sensor arranged in the mounting groove radially opened on the first tension shaft 42 and the second tension shaft 43.

[0040] The rotary driving device 40 is positioned on the inner side of the winding-off reel 2, the driving shaft penetrates the winding-off reel 2 and is positioned on the positioning plate 41, the bearing 45 is sleeved on the driving shaft, thereby improving the efficiency of the rotation of the tension adjusting mechanism 4 and avoiding the structural jamming.

[0041] The unwinding reel 2 is provided with an arc-shaped or ring-shaped support plate 21 outside the driving shaft, which supports the positioning plate 41 and ensures that the positioning plate 41 is always parallel to the unwinding reel 2, so that the rotation driving of the tension adjusting mechanism 4 is more stable.

[0042] The first tension shaft 42 and the second tension shaft 43 are provided with flanges for limiting the release film at the ends, and the flanges outside are sleeved with the reinforcing plate 46 which is clamped, so as to support and shape the tension adjusting mechanism 4 which is wound around the release film on multiple shafts, ensure the stability of winding and guiding, and before unwinding the release film, the reinforcing plate 46 is removed first, and then the material roll is positioned, the end of the release film is led out, and the winding reel is wound, which improves the positioning efficiency and convenience of the material roll.

[0043] The above-mentioned rotation driving device and method adopt one or more of a motor, a pneumatic cylinder or a hydraulic cylinder.

[0044] The working principle of the release film tensioning and stable coating unwinding device of the embodiment includes the following steps: before unwinding, the reinforcing plate 46 is removed, the material roll is sleeved on the carrier tape shaft 3, the end of the release film is led out and wound on the first tension shaft 42, the second tension shaft 43 and the unwinding shaft 5 in sequence, then the coating equipment and the winding device of the subsequent process are connected, and finally the reinforcing plate 46 is positioned on the first tension shaft 42 and the second tension shaft 43. When the material roll is unwound, the end of the release film is pulled by the winding device, the material roll on the carrier tape shaft 3 is gradually unwound, and as the size of the material roll decreases, the distance between the material roll and the tension shaft changes. At this time, the release film is in a relaxed state, the spokes 44 on the tension shaft are pressed by the release film, and the pressure sensor senses the value. When the value is lower than the set value, the rotation driving device 40 drives the tension adjusting mechanism 4 to rotate, so that the distance between the tension shaft and the carrier tape shaft 3 and the unwinding shaft 5 increases, so as to ensure the tension of the release film. When the tension is excessive, the tension adjusting mechanism 4 is driven to rotate in the opposite direction to realize automatic adjustment. After the unwinding of a single release film material roll is completed, the unwinding reel 2 is driven to rotate, and the unwinding operation of the next material roll can be performed.

[0045] As described above, by adopting the above technical scheme, the release film tensioning and stable coating unwinding device of the embodiment has the following advantages compared with the prior art:

[0046] The unwinding device of the utility model sets up guide through the carrier tape shaft, the several tensioning shafts, the unwinding middle shaft to unwind the release film, the tensioning adjusting mechanism can cooperate with the release film tensioning condition response of the spoke, carries out the whole rotation of the tensioning shaft, far away or close to the carrier tape shaft, the unwinding middle shaft, thereby realizes the automatic tensioning control of the release film, avoids its in the unwinding process, because the roll becomes small, and the distance change with the carrier tape shaft, the several tensioning shafts, the unwinding middle shaft, and the unwinding rate cannot carry out the timely adjustment, leads to the release film that unwinds to relax, wrinkles, influences the coating quality of the later process.

[0047] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, carries out equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A release film tension coating stable unwinding device, characterized in that, The utility model relates to a device base, a pay-off reel, a plurality of carrier shafts, a tension adjusting mechanism, a pay-off shaft and a pay-off reel. The utility model relates to a device base, a pay-off reel, a plurality of carrier shafts, a tension adjusting mechanism, a pay-off shaft and a pay-off reel. The first tensioning shaft and the second tensioning shaft are alternately arranged along the surface of the positioning plate, and the release film is S-shaped around the first tensioning shaft and the second tensioning shaft. The sensor is a pressure sensor arranged in the mounting groove radially opened in the first tensioning shaft and the second tensioning shaft. The rotating drive device is positioned inside the pay-off reel, the drive shaft penetrates the pay-off reel and is positioned on the positioning plate, and the bearing is sleeved on the drive shaft. The pay-off reel is provided with an arc-shaped or ring-shaped support plate outside the drive shaft.

2. The unwinding device for stable unwinding of a release film tensioned and coated according to claim 1, characterized in that, The first tensioning shaft and the second tensioning shaft are provided with flanges for limiting the release film, and the flanges are sleeved with the reinforcing plates.

3. The unwinding device for stable unwinding of a release film tensioned and coated according to claim 1, characterized in that, ​ 4. The unwinding device for stable unwinding of a release film tensioned and coated according to claim 1, characterized in that, ​ 5. A release film tension coating stable unwinding device according to claim 4, characterized in that, ​ 6. A release film tension coating stable unwinding device according to claim 1, characterized in that, ​

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