JPH0663558U - Film winding shaft - Google Patents

Abstract

(57) [Summary] [Purpose] Safe and easy, without using a cutter.
Further, the present invention provides a film winding shaft which can remove the winding film from the bobbin without damaging the bobbin, and the bobbin can be repeatedly used. A film winding shaft comprising a film winding bobbin provided with slits along the entire length in the longitudinal direction and a bobbin holder for pressing and releasing the bobbin so as to enlarge or reduce the diameter of the bobbin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a film winding shaft that allows easy removal of a winding film, and particularly to a film winding shaft suitable for winding a waste film.

[0002]

[Prior art]

 An extra film is produced after lamination from a laminate in which a photosensitive dry film or the like is attached to a substrate such as a printed circuit board, which is wound up as a waste film on a plastic or paper bobbin supported by a bobbin holder. Then, after the film is wound, the film is normally removed from the bobbin.

[0003]

[Problems to be solved by the device]

 A known method of removing the film is to cut the film with a cutter or the like, but this method is complicated in operation and inefficient in working. Requires bobbin replacement.

As another method, there is a method of discarding each bobbin, but the work of removing the bobbin from the bobbin holder is similarly difficult due to the shrinkage of the film, and the disposal treatment cost or the global environmental pollution is also reduced. Problems also arise.

Under the circumstances, the present invention can remove the wound film from the bobbin in a very short time safely and easily without using a cutter or the like and without damaging the bobbin. The bobbin is intended to provide a film winding shaft that can be repeatedly used.

[0006]

[Means for Solving the Problems]

 As a result of diligent study, the present inventor has found that the above problem can be solved by providing a slit over the entire length of the bobbin and enlarging and reducing the bobbin diameter by utilizing the elasticity of the slit and the bobbin. The present invention has been completed.

That is, the present invention provides a film winding shaft including a film winding bobbin provided with slits along the entire length in the longitudinal direction and a bobbin holder that presses and releases the bobbin so as to enlarge or reduce the diameter of the bobbin. Is the gist.

In the present invention, the bobbin holder is capable of increasing / decreasing the outer diameter of the bobbin provided with the slit attached to the bobbin holder by taking in / out compressed air. To increase or decrease the outer diameter of the bobbin, the bobbin is pressed and released from the inside by the action of a lug that moves in and out of the bobbin holder (air shaft) with compressed air (see Figs. 1 and 2), or the bobbin holder. This can be easily done by taking measures such as attaching a rubber balloon body, pressing and releasing the bobbin by letting in and out compressed air, and increasing or decreasing the diameter of the bobbin (see Fig. 4). it can.

[0009]

[Action]

 Next, the operation of the film winding shaft according to the present invention will be described. First, attach a bobbin with slits to the bobbin holder, inject compressed air into the bobbin holder, and press the bobbin from the inside to expand the bobbin diameter. The film is wound in that state (see FIG. 1). When the compressed air is released after the winding is completed, the pressure applied to the bobbin is released, and the elasticity of the bobbin reduces the diameter of the bobbin, resulting in a gap A between the bobbin and the wound film (see FIG. 2). Therefore, the winding film can be easily removed from the bobbin.

[0010]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional explanatory view showing an embodiment of a film winding shaft of the present invention. In FIG. 1, the film winding shaft is supported by a bearing in a journal portion 1 by a laminator (not shown) that attaches the film to the substrate. The lug 3 of the air shaft 2 that constitutes the bobbin holder moves in and out of the main body 2 of the air shaft by taking in and out compressed air (a nozzle for taking in and out is not shown). As shown in FIG. 3, the film winding bobbin 4 is provided with slits along the entire length in the longitudinal direction, so that the diameter can be enlarged. When the bobbin 4 is set on the air shaft 2 and compressed air is injected, the lug 3 comes out, and the bobbin 4 is pressed from the inside to increase its diameter and fixed. In this state, wrap the excess waste film from the laminator onto the substrate.

When the compressed air of the air shaft is removed after the winding is completed, the lug 3 retracts into the air shaft, and when the pressure of the bobbin is released, the elasticity of the bobbin reduces its diameter, as shown in FIG. As described above, a gap is formed between the bobbin 4 and the winding film 5, and the film 5 can be easily removed.

FIG. 4 is a sectional view showing another embodiment of the present invention. In FIG. 4, 12 is a bobbin holder, 13a and 13b are rubber balloon type pickers, and air picks made by Bridgestone Co. are used in this embodiment. This corresponds to the lug 3 of the air shaft in the embodiment shown in FIG. 1, and when compressed air is injected into the bobbin holder 12, compressed air enters the picker from a nozzle (not shown). The bobbin 4 is expanded to press the bobbin 4 from the inner side, and the bobbin diameter is expanded. When the film is wound in this state and then compressed air is removed, the picker contracts and returns to its original shape by the elastic force of the bobbin. Can be formed. In addition, 14 is a compressed air conducting tube.

In the above-mentioned embodiments, the winding of the extra waste film after the adhesion generated from the laminator for adhering the cover film to the substrate has been described, but the present invention is not limited to this and particularly It is suitable for treating the waste film generated in the process.

FIG. 5 is a cross-sectional view of the winding shaft of the extra cover film from the conventional laminator. The film wound on the bobbin 4 mounted on the bobbin holder 22 is cut by a cutter. Be removed. Further, FIG. 6 is an explanatory view of a conventionally used slitless bobbin.

[0015]

[Effect of device]

 As described above, the film take-up shaft of the present invention allows the taking-up work of the take-up film to be carried out very safely and easily without using a cutter or the like, and the bobbin can be repeatedly used without being damaged. can do.

[Brief description of drawings]

FIG. 1 is an explanatory cross-sectional view showing an embodiment of the present invention, showing a state in which a bobbin has an enlarged diameter and a film is wound.

FIG. 2 is a view showing a state in which a diameter of the bobbin is reduced to form a gap between the winding film and the bobbin.

FIG. 3 is an explanatory view of a bobbin provided with a slit used in the present invention,

FIG. 4 is a sectional view showing another embodiment of the present invention,

FIG. 5 is a sectional explanatory view of a conventional film winding shaft,

FIG. 6 is an explanatory view of a conventional bobbin.

[Explanation of symbols]

 2 Air shaft constituting bobbin holder 3 Air shaft lug 4 Bobbin 5 Winding film 12,22 Bobbin holder 13a, 13b Picker A Gap formed between bobbin and winding film

Claims (1)

[Scope of utility model registration request] 1. A film winding shaft comprising a film winding bobbin provided with slits along the entire length in the longitudinal direction and a bobbin holder for pressing and releasing the bobbin so as to enlarge or reduce the diameter of the bobbin.