Cutting apparatus for adhesive tape rolls

Abstract

To restrain shifting of a circular blade, and reduce a cutting-in angle of the circular blade with respect to the tape roll main body, both ends of a rotatable blade shaft 38 is supported by a pair of shaft bearings 39a and 39b of shaft supporting members 37 of a tool post 20. The circular blade 21 is mounted to the blade shaft 38, between the shaft bearings 39a and 39b. This prevents the blade shaft 38 from being shifted or bent, restrains shifting of the circular blade 21, and reduce the cutting-in angle of the circular blade 21 with respect to the tape roll main body.

Description

technical field [0001] The present invention relates to a cutting device for cutting an adhesive tape roll in sections. Background technique [0002] An adhesive tape having an adhesive layer formed on one or both surfaces is often wound up on a core such as a paper tube to form an adhesive tape roll in a wide state, and then cut into sections to a predetermined width to obtain a product. [0003] When cutting off this adhesive tape in a slicing manner, the adhesive tape roll is mounted on the roll support device in a rotatable manner, so that the circular knife mounted on the knife table in a rotatable manner runs along a direction perpendicular to the The adhesive tape roll advances in the axial direction, at least one of the adhesive tape roll and the circular knife is driven to rotate, and the circular knife is pressed against a predetermined cutting position on the adhesive tape roll body. (For example, refer to Patent Documents 1 and 2) [0004] When the above-mentio...

AI Technical Summary

Problems solved by technology

[0009] Although the above-mentioned cutting device for cantilever-supporting the circular knife knife shaft can easily attach and detach the circular knife from the top of the knife shaft, there is a problem that the circular knife is pressed against the adhesive tape roll. When it is on the body, the cantilever-supported knife shaft vibrates, and the circular knife used to cut the adhesive tape roll is prone to blade vibration

When the blade vibrates like this on a round knife, it will cause unevenness on the cut surface, and the straight cut surface will not be obtained, and it will become a defective product.

In addition, if the cut surface has unevenness, the adhesive of the adhesive tape roll will easily ooze out, which may stain the cut surface, or the adhesive may adhere to the circular knife to increase the cutting resistance.

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