JPH0419095A - Manufacture of paper-made sawtooth cutter - Google Patents

Abstract

PURPOSE:To enable the cutting of a aluminium foil by press-cutting the end edge of paper into the specified depth, and them forming sawtooth shape intersecting the bottom of the slit cutting edges. CONSTITUTION:The end edge 3 of paper as material is press-cut into the specified depth by plural first press-cutting edges 1 planted parallel at the specified pitch with first inclination alpha1 to the end edge 3 of the paper. Plural second press-cutting edges 5 planted parallel at the specified pitch with second inclination alpha2 to the end edge 3 of this paper then performs press-cutting in such a way as to form sawtooth shape intersecting the bottom of already slit cutting edges. A desired paper-made sawtooth cutter can be thus obtained.

Description

[Detailed Description of the Invention] <Industrial Utilization> The present invention uses rolled aluminum foil or plastic foil, which are popular as kitchen utensils, or cellophane tape, which is popular as office supplies. It relates to a serrated cutter used for cutting.

<Prior Art> All conventional serrated cutters for cutting aluminum foil, plastic foil or cellophane tape have been made of metal plates.

<Problems to be Solved by the Invention> Serrated cutters made of metal plates often injure the human body; When the paper case was incinerated together with the case, only the metal canter was left unburned, and the sharp serrated parts could hurt the hands of the workers who disposed of it.

Recently, an attempt has been made to replace the metal serrated cutter with a paper serrated cutter by pressing the paper with an industrial push-cutting blade, but the industrial push-cutting blade is made by bending the paper at an acute angle. However, there was a problem in that the tip of the paper serrated canter that was cut became rounded, making it impossible to cut aluminum foil or plastic foil.

The present invention aims to solve the above problems all at once.

<Means for Solving the Problems> The first means for solving the problems of the present invention is to plant a plurality of first sheets parallel to the edge of the paper material at a first inclination angle and at a predetermined pitch. A first step of cutting the edge of the paper to a predetermined depth with a push-cutting blade, and a second step of planting a plurality of pieces at a predetermined pitch parallel to the edge of the paper to be the material at a second inclination angle. This is a method for manufacturing a paper serrated cutter, which comprises a second step of pressing with a second pressing cutting blade so as to intersect with the bottom of the cut made in the first step to form a sawtooth shape.

The second solution of the present invention includes a first step of cutting off the edge of the paper using a plurality of first 7-shaped pushing cutting blades arranged parallel to the edge of the paper as a material; A second step of pressing the edge of the paper to form a sawtooth shape using a plurality of second V-shaped pressing cutting blades arranged to make a V-shaped cut in the middle of the V-shaped cut made in the first step. This is a method for manufacturing a paper serrated cutter.

<Operation> According to the first solution, comb-shaped incisions are formed on the edge of the paper material in the first step, parallel to the edge at a predetermined angle, with equal pitches, and with a constant depth. , the second step forms serrations on the edges of the paper. This serrated tip has no roundness and is perfectly sharp.

According to the second solution, a plurality of V-shaped incisions are engraved on the edge of the paper material in the first step, and the V-shaped notches engraved in the first step are engraved in the second step. A second V-shaped cut is made in the middle of the cut to form a serration at the edge of the paper.

The tip of this serrated blade has no roundness and is perfectly sharp.

<Example> FIG. 1 shows the arrangement of the pressing cutting blades used in the first step of the i-th example. Note that this figure only shows the cutting edge line of the pressed cutting blade, and a cross-sectional view taken along line A-A' is shown in FIG. A plurality of straight pressing cutting blades 1-.1 are installed parallel to each other in grooves of a substrate 2 made of a plywood board. This pressing cutting blade 1 has a predetermined inclination angle with respect to the edge 3 of the paper to be processed, and for example, the angle α1 formed with the normal line of the edge 3 is 22.5'. Further, the pressing cutting blades 1-1 are arranged at equal pitches, and for example, the pitch p in the direction along the edge 3 is 1.5 mm.

Furthermore, the envelope e of one end of each pressing cutting blade 1-.1 is parallel to the edge 3, and the distance from the edge is, for example, about 1.8 mm. Note that the board 2 has pins 4 for positioning the paper.
4 have been planted.

FIG. 2 shows the arrangement of the pressing cutting blades used in the second step.

A plurality of straight pressing cutting blades 5-5 are arranged in the grooves of the substrate 6, parallel to each other and at equal pitches at a predetermined angle of inclination with respect to the edge 3 of the paper to be processed. The pitch pl in the direction along the edge 3 is equal to the pitch p1 of the pressing cutting blade 1-1 in the first step described above.

The inclination angle α may be equal to the above α. Each push cutting blade 5-
The envelope e of one end of 5 is parallel to the edge 3, and the distance h
2 is equal to the above, but slightly smaller, )1)"=1
．． In the case of 8 mm, for example, hz = 1.1 mm. A bin 7.7 for positioning paper is installed in the base Fi,6.

Further, in this second step, a pressing cutting blade 8 for pressing the outline of the entire cutter is integrally formed. moreover,
It is also possible to construct a contour line forming a box for storing the entire roll, a crease process for folding, or a perforation process on the same substrate and process them simultaneously.

The embodiment described here is for the case where the front and back sides of the paper to be processed are not changed. However, when the paper is turned over after the first step and the second step is performed, the pushing cutting blade 1- 1 can be shared. In that case, two more alignment bins are added on the same board.

FIG. 4 shows an example of a cutter manufactured according to this first embodiment. The edge has a serrated shape in which triangles with an apex angle of (α1 + α2) are continuously formed, and the peak is not rounded because it is formed by two straight lines intersecting at an acute angle.

FIG. 5 shows the arrangement of the pressing cutting blades used in the first step of the second embodiment. This figure also shows only the cutting edge line of the pressing cutting blade, and FIG. 7 shows a front view of one V-shaped pressing cutting blade 9 viewed from the cutting edge direction. A plurality of first V-shaped pushing cutting blades 9.
-9, the bottoms of the 7-shaped valleys are aligned on a straight line f, the center lines g of each V-shape are perpendicular to the straight line f, and are arranged at equal pitches, and are planted in the grooves of the substrate 13 made of plywood. The straight line f is parallel to the edge 3 of the paper to be processed, and the distance Mh3 from the edge 3 is, for example, about 1.7 ms+. A bin 15.15 for positioning paper is embedded in the substrate 13.

FIG. 6 shows the arrangement of the pressing cutting blades used in the second step.

The second V-shaped push cutting blade 10 is used to make a ■-shaped cut in the middle of the ■-shaped cut in the first step, and the bottom of the 7-shaped valley is lined up in a straight line, and the center line m of each 1-shaped cut is aligned with a straight line vAk. The arrangement pitch p of the first V-shaped pressing cutting blade 9 that is vertical and described above
3, are arranged at equal pitches p4, and are implanted in the grooves of the substrate 14 made of plywood, and are used to process both serrated edge edges 1). 1) is integrally formed with a pressing cutting blade 12 that simultaneously processes the outline of the entire cutter and is implanted on the same substrate 14. A bin 16, 16 for arranging paper is embedded in the substrate 14. These positioning bins 15 or 1ε are set so that the depth h3 of the 7-shaped valley bottom in the first step and the depth h4 of the 7-shaped valley bottom in the second step are approximately equal.

FIG. 8 shows an example of a cutter manufactured according to this second embodiment. A sawtooth shape is formed in which one character shape is continuous, and the peak is not rounded because it is formed by two straight lines intersecting at an acute angle.

If necessary, the paper thus press-cut can be immersed in its entirety or at least its serrated portions in a solution such as a resin to strengthen its hardness.

<Effects of the Invention> According to the present invention, a cutter for cutting aluminum foil or plastic foil can be manufactured from paper, so that when it is incinerated with other domestic waste after use, it is completely incinerated. Furthermore, the box for storing the roll-shaped body of aluminum foil or plastic foil can be integrally formed, and the step of attaching a cutter to the box becomes unnecessary.

[Brief explanation of the drawing]

FIG. 1 shows the arrangement of the pressing cutting blades used in the first step of the first embodiment of the present invention, and FIG. 2 shows the arrangement of the pressing cutting blades used in the second step of the first embodiment. FIG. 3 shows a specific structure taken along the line AA' in FIG. 1. FIG. 4 shows the outline shape of the cutter obtained in the first embodiment. FIG. 5 shows the arrangement of the pressing cutting blades used in the first step of the second embodiment of the present invention, and FIG. 6 shows the arrangement of the pressing cutting blades used in the second step of the second embodiment. FIG. 7 shows a concrete front view of the V-shaped pressing cutting blade 9 shown in FIG. 5. FIG. 8 shows the outline shape of the cutter obtained in the second embodiment. 1... Straight pushing cutting blade 2... Substrate 3... Paper edge 5... Straight pushing cutting blade 6... Substrate 9... First V-shaped pushing cutting Blade 10...Second V-shaped pressing cutting blades 13, 14...Substrate

Claims (2)

[Claims] (1) A plurality of first pressing blades are planted parallel to the edge of the paper at a first inclination angle and at a predetermined pitch to press the edge of the paper to a predetermined depth. Engraving is performed in the first step using a plurality of second press cutting blades that are implanted parallel to the edge of the paper serving as the material at a second inclination angle and at a predetermined pitch. A method for manufacturing a paper serrated cutter, comprising a second step of pressing the paper so as to intersect with the bottom of the cut to form a serrated shape. (2) A first step of pushing off the edge of the paper using a plurality of first V-shaped pushing cutting blades arranged parallel to the edge of the paper to be the material, and a V-shaped cut caused by the first step. a plurality of second Vs arranged to make a V-shaped cut in the middle of the
A method for manufacturing a serrated cutter made of paper, comprising a second step of pressing the edge of the paper to form a sawtooth shape using a letter-shaped pressing cutting blade.