JPH0829567B2 - Positioning method for lower die for punching thick paper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention attaches an upper mold and a lower mold to the lower surface of a ram and the upper surface of a bed, respectively, to attach a folding line to punch cardboard into a predetermined shape. , A method for aligning the lower mold with a fixed position on the upper surface of the bed.

[Conventional technology]

In the present invention, it is premised that the upper die and the lower die are attached to the lower surface of the ram and the upper surface of the bed, respectively, and the cardboard is punched into a predetermined shape by making folding lines. explain.

As shown in FIG. 4 and FIG. 5, the upper die U constituting the punching die has a cutting blade 2 and a crease forming blade 3 on a cardboard 1 corresponding to the punching position and the crease forming position of the cardboard. It was planted. The punching die shown in the drawing has a configuration in which two pieces of the same shape are punched simultaneously.

As shown in FIG. 6, the lower mold L has a folding line forming thin plate 4 attached to a portion corresponding to the folding line forming blade 3 planted in the upper mold U. Made using mold U. Hereinafter, a method for producing the lower mold L will be described.

As shown in FIGS. 11 and 12, a release paper 6 is attached to the back surface of the folding line forming thin plate 4 with an adhesive layer 5 interposed therebetween, and the central portion of the front surface of the folding line forming thin plate 4 is adhered. A fitting body 8 is fitted in the groove portion 7 formed in the. The folding line forming thin plate 4 is in a state before use. Then, the release paper 6 is peeled off, and the folding line forming thin plate 4 is attached to the portion of the folding line forming blade 3 of the upper mold U through the fitting body 8 (Fig. 13). In this state, the lower mold L is moved to the upper mold. When the lower mold L and the upper mold U are separated from each other by closely contacting the U with a predetermined pressure (Fig. 14), the folding line forming thin plate 4 is adhered to the lower mold L (Fig. 15) to form the folding line. Thin plate 4
When the fitting body 8 in which the groove portion 7 of the above is fitted is removed, as shown in FIGS. 6 and 16, for forming a fold line in a portion of the lower die L corresponding to the fold line forming blade 3 of the upper die U. The thin plate 4 is attached by copying, and the ridge 9 of the cutting blade 2 is attached to a portion of the lower die L corresponding to the cutting blade 2 of the upper die U.

The cardboard punching machine, as shown in FIG.
The ram 12 is mounted via a guide column 13 so as to be movable up and down, and the ram 12 is configured to move up and down with a predetermined stroke by a driving means. Cardboard punching machine ram 12
The upper mold U and the lower mold L described above are mounted on the lower surface of the lower mold and the upper surface of the bed 11 so as to face each other, and the cardboard P
When the ram 12 is placed and the ram 12 is moved downward, as shown in FIG. 18, the thick paper P is cut and punched by the cutting blade 2 implanted in the upper mold U, and as shown in FIG. like,
Folding lines on the thick paper P by the groove portions 7 of the folding line forming thin plate 4 attached to the lower mold L and the folding line forming blades 3 planted in the upper mold U.
14 is formed, and the thick paper P is punched into a predetermined shape as shown in FIG.

However, as described above, when the upper die and the lower die of the punching die are attached to the lower surface of the ram and the upper surface of the bed, respectively, and when the cardboard is punched into a predetermined shape by making a folding line, it is planted in the upper die U. It was extremely difficult to align the two molds U and L so that the folding line forming blade 3 could fit into the groove portion 7 of the folding line forming thin plate 4 adhered to the lower mold L, which required a lot of time.

[Problems to be Solved by the Invention]

SUMMARY OF THE INVENTION It is an object of the present invention to accurately and quickly align and fix a lower mold in a fixed position on the upper surface of a bed by following a preset upper mold by a simple method. .

[Means for solving the problem]

In order to solve this problem, according to the present invention, an upper die in which a cutting blade and a folding line forming blade are respectively implanted at a punching position and a folding line forming position of thick paper is attached to a lower surface of a ram to form an upper die folding line. The thin line forming plate is attached to the part corresponding to the blade, and the lower mold with its striations on the part corresponding to the cutting blade of the upper mold is mounted on the upper surface of the bed, and the ram is attached. A method of aligning the lower mold with a fixed position on the upper surface of the bed when punching a thick paper into a predetermined shape by making a fold line by moving it up and down. The paper is attached to the lower die set part of the bed, and the ram is moved downward to make a trace of the upper cutting blade on the reference paper, and then between the reference paper and the upper surface of the bed. Insert the lower mold and attach it to the reference paper. It is characterized in that the line marks and the line marks formed on the lower mold are matched through the peep holes, and then the reference paper is removed and the lower mold is fixed to the upper surface of the bed through the fixing means. is there.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to examples. The same parts as those described in the above-mentioned "Prior Art" are designated by the same reference numerals, and only the characteristic parts of the present invention will be described without duplicating description. Position of the lower mold L according to the present invention A reference sheet A as shown in FIG. 7 is used for carrying out the matching method. The reference sheet A has a large number of peepholes 21 all over its surface. The peep hole 21 has an elongated linear shape, is formed at a constant pitch in both the vertical and horizontal directions, and is inclined at a predetermined angle with respect to each piece of the rectangular reference paper A.

Using this reference paper A, in order to align and fix the lower die L of the cardboard punching die on the upper surface of the bed 11 of the cardboard punching machine in a fixed position, as shown in FIG. The reference paper A is attached to the set portion of the lower mold L. Tape 22 is attached to both ends of the reference paper A,
Is fixed to bed 11. In addition, between the reference paper A and the upper surface of the bed 11, the reference paper A has a stripe mark described later.
A mount 23 is inserted so that 24 can be easily attached.

The upper mold U is set in advance on the lower surface of the ram 12,
As shown by the chain double-dashed line in FIG. 1, when the ram 12 is moved downward, the cutting blade 2 planted in the upper mold U is moved to the reference paper A.
Contact with a small pressure.

As a result, as shown in FIG. 7, the reference paper A is provided with the scratches 24 of the cutting blade 2 of the upper mold U. Then, the mount 23 disposed below the reference sheet A is removed, and as shown in FIGS. 2 and 8, the reference sheet A is removed.
The lower mold L is inserted between the upper surface of the bed 11 and the upper surface of the bed 11. Standard paper A
Since the lower mold L and the lower mold L are provided with the slits 24 and 9 of the cutting blade 2 of the upper mold U which are common to each other, the slits 24 formed on the reference sheet A and the peep holes 21 of the reference sheet A are formed. When the streak 9 of the lower mold L that can be seen through is matched at a plurality of points (the matching state is shown enlarged in FIG. 9), the upper mold U set on the lower surface of the ram 12 is On the other hand, the lower mold L is aligned. After that, when the aligned lower mold L is kept stationary, the reference paper A is removed, and the aligned lower mold L is fixed to the bed 11 via a fixing means such as a tape 25. As shown in FIG. Underside of ram 12 and bed
Upper mold U and lower mold L are set at fixed positions on the upper surface of 11, respectively.

Further, the above-mentioned reference paper A is merely an example, and it suffices that a peep hole for peeking the streak 9 attached to the lower die L inserted below is provided over the entire surface, as shown in FIG. It is also possible to use a reference paper A'where the peephole 21 'is arcuate as shown in FIG.

〔The invention's effect〕

The present invention uses a reference paper on which a large number of peepholes are provided over the entire surface, and the scratches of the cutting blade of the upper die attached to the reference paper and the same upper surface attached when the lower die is made. The lower die is aligned by matching the scratches on the cutting blade of the die through the peep holes in the reference paper.Therefore, the lower die follows the upper die that is set on the lower surface of the ram, and the lower die is placed on the bed. Can be quickly set by aligning with the upper surface of the. Therefore, the punching die can be set quickly and the setup time can be shortened.

[Brief description of drawings]

1 to 10 are views for explaining the present invention. FIG. 1 is a front view of a cardboard punching machine in which a reference sheet A is mounted on the upper surface of a bed 11, and FIG. , A partial front view showing a state in which the lower die L is inserted below the reference sheet A having the scratches 24, and FIG. 3 shows a cardboard punching machine in which the lower die L is set at a fixed position on the bed 11. A front view, FIG. 4 is a perspective view of an upper mold U, FIG. 5 is an enlarged perspective view of a portion X of FIG. 4, FIG. 6 is a perspective view of a lower mold L, and FIG. FIG. 8 is a perspective view of the reference sheet A in which the marks 24 are attached, and FIG. 8 shows a line mark 24 attached to the reference sheet A and a line attached to the lower mold L inserted below the reference sheet A. FIG. 9 is a perspective view showing a state in which the marks 9 are aligned with each other through the peephole 21 of the reference sheet A, FIG. 9 is a partially enlarged plan view of the same state, and FIG. 10 is a partially enlarged plan view of another reference sheet A ′. Is. 11 to 20 are views for explaining a method of punching thick paper by mounting an upper die and a lower die on the lower surface of the ram, the bed and the upper surface, respectively, and FIG. Thin plate 4
Before use, FIG. 12 is an enlarged sectional view of the same, and FIGS. 13 to 16 are lower mold L and fold line forming thin plate 4
FIG. 17 is an enlarged cross-sectional view of the portion of the folding line forming blade 3 for explaining the order of copying and pasting the paper, and FIG. 17 is for explaining the principle of punching the thick paper P using the upper mold U and the lower mold L. FIG. 18, FIG. 18 and FIG. 19 are enlarged cross-sectional views of the cut portion and the folding line forming portion of the thick paper P, and FIG. 20 is a perspective view showing the punched state of the thick paper P. The explanation of the reference numerals of the main parts constituting the present invention is as follows. A, A ′: Standard paper, L: Lower mold P: Thick paper, U: Upper mold 2: Cutting blade, 3: Folding line forming blade 4: Folding line forming thin plate 9: Cutting blade striations attached to the lower mold 11 : Bed, 12: Ram 21, 21 ': Reference paper peep hole 24: Slits of the cutting blade on the reference paper

Claims (1)

[Claims] 1. A portion corresponding to the folding line forming blade of the upper die, wherein an upper die in which a cutting blade and a folding line forming blade are respectively implanted at a punching position and a folding line forming position of thick paper is mounted on a lower surface of a ram. A fold line forming thin plate is attached to the bottom of the bed, and the lower die with its ridges on the cutting blade of the upper die is attached to the upper surface of the bed, and the ram is moved up and down. A method of aligning the lower mold at a fixed position on the upper surface of the bed when punching a cardboard into a predetermined shape with a crease line, wherein a reference paper having a large number of peepholes over the entire surface is placed under the bed. It is attached to the set part of the mold, and the ram is moved downward to make a trace of the cutting edge of the upper mold on the reference paper, and then the lower mold is inserted between the reference paper and the upper surface of the bed. Then, attach it to the streak and lower mold attached to the reference paper. A method for aligning a lower mold for punching thick paper, characterized in that the formed scratches are matched with each other through the peep hole, the reference paper is thereafter removed, and the lower mold is fixed to the upper surface of the bed through a fixing means.