JPS60178159A - Method of removing film excessively or wrongly wound round roll - Google Patents

Abstract

PURPOSE:To efficiently remove a film without damaging the outer periphery of a roll by moving the edge of a blade of a knife along an axial groove formed on the outer periphery of the roll, cutting a film wound round the roll and stripping same. CONSTITUTION:A knife insertion groove 2 is formed on the outer periphery of a roll 1 axially, for example. The groove 2 is shaped in such a manner that the edge of a blade of a knife may move without resistance, for example, V-shaped, and the width and depth of the groove are suitably decided. The edge of the blade of the knife 3 is moved along the above groove 2 of the roll 1 to cut a film 4 wound round the roll 1. Thus, the film 4 wound round the roll 1 can be removed easily and quickly without damaging the outer periphery of the roll 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing a film or the like that has been erroneously wound around a roll.

For example, in film manufacturing equipment, there are many rolls between the roll on which the original sheet is wound and the take-up roll, and there is a possibility that a cut film may accidentally wind up on the roll that exists between these rolls. There is. Conventionally, in this case, the film is cut with a knife, but the knife often scratches the outer periphery of the roll during cutting, which causes scratches on the new film when the film is removed and operation is resumed. Accidents such as cutting the string or film are likely to occur.

The present invention has been made in view of this point.

It is an object of the present invention to provide a method by which an incorrectly wound film can be quickly removed without damaging the outer periphery of a roll.

The present invention will be explained in more detail below.

In the present invention, the cutting edge of the knife is moved along the knife insertion groove in the axial direction or in the direction crossing the axis provided on the outer periphery of the roll to cut and peel off the film, etc. wound around the roll. It is characterized by:

1 and 3 show rolls used in the present invention). The roll shown in FIG. 1 has an axial knife insertion groove 2 provided on the outer periphery of the roll 1. FIG. 2 is an enlarged view of part A in FIG. Depth is also determined appropriately. Further, the roll shown in FIG. 3 has a knife insertion groove 2' provided on the outer periphery of the roll 1 in a direction perpendicular to the axis of the roll. Furthermore, FIG. 4 is a perspective view of the state in which the present invention is being carried out, where the film 4 is wrapped around the roll 1 and the cutting edge of the knife 3 is aligned along the knife insertion groove 2 of the roll 1. This is a state in which the film 4 is cut at -F in the width direction. By cutting the film 4 in this manner and peeling it off from the cut portion, the incorrectly wound film can be removed from the roll very easily and quickly.

Therefore, according to the present invention, it is possible to remove the film accidentally wound around the roll very easily and quickly, and the downtime can be significantly reduced. Further, even when cutting with a knife, the cutting edge of the knife does not jump out of the knife insertion groove and moves along the groove, so there is no risk of the knife damaging the outer periphery of the roll. Therefore, accidents such as damage to or cutting of new film, which tended to occur in the past, are completely eliminated.

Although the above description is for film rolls, the present invention can also be applied to rolls of paper, cloth, adhesive tape, stretched tape, metal wire, thread, and the like.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the roll used in the present invention, and Fig. 2 is a perspective view of the roll used in the present invention.
2.2': Knife Push-in groove Applicant: Tokyu Sankei Kogyo Co., Ltd. Figure 3 Figure 4

Claims (1)

[Claims] The blade edge of the knife is moved along the knife insertion groove in the axial direction or in the direction crossing the axis provided on the outer periphery of the roll to cut and peel off the film, etc. wound around the roll, so that there is no error in winding the roll. How to remove attached film, etc.