JP2002347727A - Device for cutting skin of rolled object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a groove on a spatula from being clogged with paper dust, wastepaper, or the like, in a cutting device with the spatula for scooping up a skin, and a rotary blade for cutting the skin. SOLUTION: A groove 3f formed on a spatula 3A is made to vertically panetrate the spatula 3A, so that the paper dust, wastepaper, or the like sent into the groove by a rotary blade 4 pass through the spatula vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting the skin of a roll-shaped material for cutting the skin of the roll-shaped material.
Here, the roll-shaped material is a roll paper mainly used for a rotary printing press, but other than that, a material such as plastic, paper, metal, wood, or a roll-shaped material made of a composite thereof. It may be. Further, the skin means a material on the surface layer of the roll-shaped material, such as a packing material for packing the roll paper, a main paper on the surface layer of the roll paper, or both.

[0002]

2. Description of the Related Art Conventionally, in order to remove a packing material from roll paper received in a packed state, first, the packing material on both end portions of the roll paper is cut and removed, and then the packing material on the peripheral surface is removed in the axial direction of the roll paper. Incisions are made and removed. The applicant has previously developed a device for cutting the peripheral packaging material (or the peripheral packaging material and several sub-layers of the surface of the roll paper) in the axial direction of the roll paper, and filed a patent application (patent application). Kaihei 8-4
0426). As shown in FIG. 2, the cutting device used in this device is a skin 2 of a roll-shaped material 1 such as roll paper.
Spatula 3 moving while scooping up (only packing material or packing material and surface paper), rotating blade 4 for cutting skin 2 scooped up by the spatula, and roll-like material 1 holding spatula 3 and rotating blade 4 Means for running along (not shown),
A means (not shown) for rotating the rotary blade 4 is provided. As shown in FIG. 3, the spatula 3 used here has a thin flat portion 3a at the tip, and a pair of guide surfaces 3b inclined so as to scoop up the skin behind and push the cut skin to both sides, 3b, a flat bottom surface 3c, and a groove 3d formed between the pair of guide surfaces 3b, 3b and for positioning the rotary blade 4. With this configuration, as shown in FIG. 2, the spatula 3 is inserted into the inside of the skin 2 to be cut of the roll-shaped material 1, and while lifting the skin 2, advances on the surface 1 a below the skin and raises the raised skin. When the rotary blade 4 cuts the outer skin 2, the epidermis 2 can be satisfactorily incised. Here, the width of the groove 3d is equal to the thickness of the rotary blade 4 (usually,
0.5 mm), for example, 1.2 m
m.

[0003]

However, it has been found that the cutting device of this configuration has a problem to be further improved. That is, the shape of the groove 3d formed in the spatula 3 is
Although the paper dust, paper dust, etc. generated by the cutting of the skin by the rotary blade 4 are formed so as to be sent obliquely upward behind the rotary blade 4 by the rotation of the rotary blade 4, the paper dust,
Paper debris and the like are accumulated in the groove 3d, and finally the rotary blade 4
And the rotary blade 4 stops rotating. For this reason, the groove 3d must be frequently cleaned, and a troublesome maintenance operation is required.

The present invention has been made in view of the above problems, and provides a roll-shaped skin cutting apparatus which can be used for a long period of time without cleaning a groove formed in a spatula. The task is to

[0005]

According to the present invention, paper dust is contained in a groove.
The groove is penetrated in the vertical direction of the spatula in order to prevent paper dust and the like from being clogged.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for cutting skin on a roll according to an embodiment of the present invention comprises a spatula moving while scooping up the skin of a roll and a rotary blade for cutting the skin scooped up by the spatula. A pair of guide surfaces inclined to scoop up the skin to be cut and push the cut skin toward both sides, and formed at the center of the pair of guide surfaces to position the rotary blade. It has a configuration provided with a groove, and the groove has a shape penetrating a spatula in the vertical direction. With this configuration, the spatula advances while scooping up the skin, and the rotating blade cuts the scooped up skin, so that the skin can be cut off satisfactorily, at which time paper dust, paper debris, etc. are generated, and the spatula Even when entering the groove, the groove penetrates up and down, so that the rotation of the rotary blade does not pass vertically and accumulates in the groove, and paper dust and paper debris are clogged in the groove and the rotary blade can rotate. There is no trouble such as disappearance.

[0007] Here, the spatula has a thickness of 0.5
It is preferable to have a flat portion having a length of 5 to 15 mm and a groove penetrating the spatula at least avoiding a tip region of the flat portion. With this configuration, when the spatula advances while scooping up the epidermis, the thin flat part of the spatula tip advances well between the epidermis and the inner paper, etc., and the flat part bends. Also, it is possible to satisfactorily follow small irregularities on the roll-shaped material, and to avoid troubles such as breaking through the skin or the paper.

[0008]

FIG. 1 shows the main parts of an apparatus for cutting the skin of a roll according to an embodiment of the present invention. The same parts as those of the conventional example shown in FIGS. 2 and 3 are denoted by the same reference numerals. The skin cutting device of this embodiment also includes a spatula 3A that moves while scooping up the skin (for example, only the packing material or the packing material and the surface paper) of the roll-shaped material 1 such as roll paper.
Rotary blade 4 that cuts the skin that has been picked up with a spatula 3A
And means (not shown) for holding the spatula 3A and the rotary blade 4 and traveling along the roll-like material, means for rotating and driving the rotary blade 4 (not shown), and the like. The spatula 3A used here has a pair of guide surfaces 3b and 3b which have a thin flat portion 3a at the tip, and which are inclined so as to scoop up the skin and push the cut skin toward both sides, and the lower surface of the spatula. And a groove formed between the pair of guide surfaces 3b, 3b and a flat bottom surface 3c formed on the distal end side, a retreating surface 3e formed at a position higher than the bottom surface 3c behind the flat bottom surface 3c, and positioning the rotary blade 4. 3f. Unlike the conventional case, the groove 3f is formed to penetrate the spatula 3A in the vertical direction. The groove 3f is preferably formed behind the flat portion 3a, avoiding at least the tip region of the flat portion 3a.

Flat portion 3a formed on spatula 3A
In the same manner as in the case shown in FIG.
Is provided so as to be able to follow the irregularities (irregularities on the surface 1a) of the roll-like material while moving on the surface 1a thereunder while scooping up the surface of the skin. 0.5-1.2mm in thickness and 5-1 in length
5 mm is selected. The tip of the flat portion 3a is chamfered so as not to damage the roll. The flat bottom surface 3c is also provided so that when the spatula 3A moves while scooping up the skin of the roll, it can move stably while following the unevenness of the roll, usually 20 to 50 mm. Made to length. If the length is too short, the ability to follow the unevenness of the roll-like object deteriorates, and if the length is too long, the frictional resistance to the roll-like object increases, which is not preferable, and the above range is preferable. The evacuation surface 3e is such that the entire lower surface of the spatula 3A is the surface 1 of the roll-shaped material 1.
This is provided to avoid contact with a, and to form a space 8 for blowing out paper dust, paper debris, and the like between the surface 1a of the roll-shaped material after the skin is removed at the time of skin cutting. Bottom 3c
And the dimension h in the height direction of the evacuation surface 3e is 1 to 3 mm
It is preferable to select the degree. The distance d from the tip of the spatula to the tip of the groove 3f needs to be set to some extent large so that the flat portion 3a of the spatula tip can perform a desired action, and is selected to be about 10 to 15 mm. preferable. Further, the length of the groove 3f needs to be selected so that at least the groove 3f communicates with the space 8, and is usually selected to be about 40 to 70 mm. The width of the groove 3f is preferably widened so as to prevent paper dust, paper debris, and the like generated by cutting from being clogged in the groove. become. Considering these, the groove 3f
Is preferably selected to be about 3 to 5 mm when the rotary blade 4 having a thickness of 0.5 mm is used. Examples of the material constituting the spatula 3A include synthetic resins such as nylon, soft materials such as rubber, and metals such as stainless steel.

There are no particular restrictions on the structure of the means for holding the spatula 3A and the rotary blade 4 to travel along a roll-like object (not shown) and the means for rotating and driving the rotary blade 4 (not shown). For example, those described in JP-A-8-40426 can be used.

[0011] In the cutting apparatus having the above structure, the spatula 3A
The inner surface of the roll to be cut advances while lifting the skin, and the rotating blade 4 cuts the lifted skin, whereby the skin can be satisfactorily incised. Here, paper dust, paper debris, etc. are generated at the time of cutting the skin, and are blown off into the groove 3f by the rotary blade 4. However, since the groove 3f penetrates up and down, it comes out of the spatula 3A up and down and clogs in the groove 3f. There is no. Thus, there is no trouble that the rotary blade cannot be rotated due to paper dust or paper debris clogging in the groove 3f, and can be used for a long period of time without performing troublesome maintenance work such as cleaning the groove. can do.

[0012]

As is apparent from the above description, the present invention has a structure in which a groove formed for positioning the rotary blade is penetrated vertically above and below the spatula, so that the groove is formed in the groove. There is no clogging of paper dust, paper dust and the like, and therefore, there is an effect that it can be used well for a long period of time without performing troublesome maintenance work such as groove cleaning.

[Brief description of the drawings]

1A is a schematic side view of main parts of a skin cutting device according to an embodiment of the present invention. FIG. 1B is a schematic sectional view of the parts shown in FIG. 1A. FIG. 1C is a schematic plan view of a spatula. ) Of FIG.

FIG. 2 is a schematic side view showing a conventional skin cutting device in a state where the skin is being cut;

3A is a schematic side view of main parts of a conventional skin cutting apparatus. FIG. 3B is a schematic sectional view of the parts shown in FIG. 3A. FIG. 3C is a schematic plan view of a spatula. Schematic sectional view taken in the direction of the arrow

[Explanation of symbols]

 Reference Signs List 1 roll-shaped material 1a surface of roll-shaped material after skin removal 2 skin 3, 3A spatula 3a flat part 3b inclined surface 3c flat bottom surface 3d groove 3e retreat surface 3f groove 4 rotary blade 8 space

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takefumi Murase 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. 3C027 QQ03 3E058 AA06 CA02

Claims (2)

[Claims] An apparatus for cutting a skin of a roll, comprising a spatula moving while scooping up the skin of the roll, and a rotary blade for cutting the skin scooped up by the spatula.
A pair of guide surfaces inclined so that the spatula scoops up the skin to be cut and pushes the cut skin off to both sides;
An apparatus for cutting the skin of a roll-shaped material, comprising a groove formed at the center of the pair of guide surfaces and positioning the rotary blade, and the groove is formed to penetrate a spatula in the vertical direction. 2. The method according to claim 1, wherein the spatula has a thickness of 0.5 to 1.
2. A flat portion having a length of 2 mm and a length of 5 to 15 mm, wherein a groove passing through the spatula is formed so as to avoid at least a tip region of the flat portion. An apparatus for cutting a skin of a roll-shaped material according to the above.