JP2006068896A - Sheet holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet holder capable of surely forming a rule and preventing the rule from cracking or a chatter mark from occurring on a cut edge. <P>SOLUTION: The sheet holder B is fixed to a punch die A across a cutter bit or a rule press 3 when the sheet (a) is to be punched into a predetermined shape by the cutter bit 2 mounted on the die A and a rule 6 is to be pressed and formed by the rule press 3. A skid 5 for suppressing the movement of a component member of the corrugated fiberboard sheet is provided on the external surface of a press board 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, when a corrugated cardboard sheet is punched with a punching die having a cutting blade and a ruled line, the corrugated sheet is attached to a side of a cutting blade or a ruled line for external punching and a cutting blade for punching an opening in a product. The present invention also relates to a sheet presser that prevents chattering of a cut portion by a cutting blade (such as tearing and cracking) and ruled line cracking.

  When punching a corrugated cardboard sheet into a predetermined shape, such as the outer shape and the opening in the product, and forming a ruled line for folding each piece in the punched product sheet, the cutting die is sandwiched between -Pressers that hold the processed surface of the corrugated cardboard sheet are attached to both the outer sides and the inner and outer sides of the ruled line.

For example, in the case of a ruled line, the conventional presser B ′ has a height that is substantially the same as the tip of the ruled line 7 planted and fixed to the punching die A ′ as shown in FIG. It is formed in a gentle arc surface that gradually decreases toward the end in the direction. The sheet presser is fixed at predetermined intervals on both sides of the ruled line (see, for example, Patent Document 1).
As a result, when the corrugated sheet is pressed with the punching die lowered, the corrugated portion on the corrugated cardboard side corresponding to the crease is completely crushed to the thickness of only the component by the sheet presser, and then crushed. Since the ruled line is pressed against the part, the ruled line is not clear and is formed in a blurred state.
Therefore, although the ruled line crack does not occur, the ruled line itself is not clear and is blurred, and there is a problem that the folding assembly is hindered.

When a ruled line is processed with a ruled line without using the above-described presser, a ruled line break (a phenomenon in which a crack or a tear enters both sides of the ruled line) is likely to occur. As shown in FIG. 11, when the cutting blade 2 and the ruled line 3 implanted in the punching die A ′ press the material corrugated cardboard sheet a and cut it, the cutting blade 2 has a certain height. Although the height of the ruled sheet 3 is determined in consideration of the material, thickness, moisture content, etc. of the corrugated cardboard sheet, there is a difference in height between the cutting edge tip and the ruled sheet tip. (L) is provided. When cutting the cardboard sheet, the cutting edge cuts the cardboard sheet, and the ruled line is pressed and formed on the cardboard sheet by the ruled line. Pulled in the ruled direction. For this reason, chattering or the like occurs around the cutting edge, and ruled cracks also occur around the ruled line.
In addition, recent cardboard sheets are formed by using a lot of waste paper, so that the ruled line breaks easily, especially when the air is dry, and it is more likely to occur. Precautions such as humidification are taken.

JP 2004-188751 A

  The present invention has been made in view of the above-described problems of the prior art. The object of the present invention is to firmly form a ruled line without crushing the sheet, and to prevent the sheet line from cracking and cutting edges. It is in providing tools.

The technical means taken by the present invention in order to achieve the above object is to cut a corrugated cardboard sheet into a predetermined shape with a cutting blade attached to a punching die and press a ruled line with a ruled line. A sheet presser that is fixed to the punching die on both sides of the ruled line or around the cutting edge that punches the opening inside the product, and is stamped on the outer surface of the presser plate such as rectangular or strip In this case, an anti-slip portion that suppresses the tension and movement of the constituent members of the cardboard sheet is provided (Claim 1).
The presser plate is made of an elastic material, such as sponge, urethane rubber, synthetic rubber, nylon resin, cork, etc., and its shape is flat on the surface (back surface) that contacts the punching die surface and corresponds to the corrugated cardboard sheet. The surface (surface) to be formed is a band plate shape formed on a gentle arc surface that is higher on one side in the width direction and gradually decreases toward the opposite side (Claim 2), or a band plate shape made of a flat plate with a constant thickness. , A rectangular shape or the like (claim 3).

The anti-slip portion provided on the outer surface of the presser plate may be formed in a suitable shape on the entire or part of the outer surface of the presser plate, for example, in a flat corrugated shape along the longitudinal direction of the band plate. Form.
In addition, the anti-slip portion is formed of a rough surface like fine particles. As a forming method, a sandpaper-like material is affixed to the surface of the presser plate, or fine particles of crushed shells, walnuts, apricots, etc., fine particles such as alumina oxide are applied to the surface of the presser plate with heat and adhesive. (Claim 5), or the outer surface of the presser plate itself is roughened by sandblasting or the like.

According to the above means, the sheet presser disposed on the cutting blade or on both sides of the ruled line or on the periphery of the cutting blade that punches the opening inside the product is in a state where the elasticity of the corrugated cardboard sheet is maintained (the core base paper is elastic). In the state where the sheet can be released), and the presser is provided with a non-slip portion that suppresses the movement of the constituent members of the sheet, it is possible to firmly put the ruled line by the ruled line and break the ruled line Can be prevented. That is, the ruled line can be put in a state where the characteristics of the cardboard sheet are utilized.
Even in the case of cutting with a cutting blade, since there is a space that can be rebounded on the sheet, the cutting can be performed cleanly, and chattering does not occur at the cutting edge.
And the anti-slip | skid part provided in the outer surface of a press plate does not slip | deviate from a press plate, or peels off.

The sheet presser according to the present invention can hold the sheet without crushing the sheet, thereby preventing the breakage of the ruled line and firmly putting the ruled line. In addition, when used on the side of the cutting blade, chattering at the cutting edge can be prevented.
And when it is set as the structure of Claim 5, a slip prevention part does not slip | deviate from a press plate or peel, but can maintain the effect of a press tool over a long period of time.

Embodiments of a sheet presser according to the present invention will be described below with reference to the drawings.
FIG. 1 shows a use state of a sheet presser, in which A is a punching die, and a cutting blade 2 and a ruled line 3 are assembled and fixed to a base plate 1 in accordance with the developed shape of the product. A sheet presser B is attached to each side of the cutting edge 2 and the ruled line 3 in the punching die A.
The cutting blade 2 to be assembled and fixed to the base plate 1 is a well-known band iron blade, and the ruled line 3 is a well-known one that is formed of a synthetic resin or band steel plate with a tip formed in a curved shape. . And the protrusion amount at the time of assembling the cutting blade 2 and the ruled rule 3 to the base plate 1 is suitably set according to the material, thickness, moisture content, etc. of the corrugated cardboard sheet a to be punched.

The sheet presser B is composed of a presser plate 4 formed in a band plate shape and a non-slip portion 5 formed on the outer surface of the presser plate 4.
The presser plate 4 is made of elastic sponge, urethane rubber, synthetic rubber, nylon resin, cork, etc., and has a flat plate shape (see FIG. 9 (a)) or a square material shape (see FIG. 9 (b)). ), Formed in the shape of a band plate, etc., and the back surface (surface to be joined to the base plate 1) of each press plate is formed as a flat surface, and the outer surface (corrugated cardboard sheet a and The contact surface) is a flat surface. Further, the outer surface (the surface in contact with the corrugated cardboard sheet a) of the band plate-shaped presser plate is formed in a gentle arc surface that is high on one side in the width direction and gradually decreases toward the opposite side. Note that a getter rubber 6 for height (thickness) adjustment may be bonded to the back surface of the presser plate 4 as necessary. Of course, a portion corresponding to the getter rubber 6 may be formed integrally with the presser plate 4.

The anti-slip portion 5 provided on the outer surface of the presser plate 4 suppresses the tension and movement of the members constituting the corrugated board sheet a by increasing the frictional resistance, and adheres fine particles with heat and an adhesive. 4 and the non-slip portion 5 are configured so as not to be displaced or separated. Alternatively, a sandpaper (the base material may be either cloth or paper) may be attached with an adhesive.
In addition to the chevron shape shown in FIG. 2, the planar shape of the anti-slip portion 5 includes (a) a waveform shape, (b) a discontinuous inverted V shape, (c) intersecting arc shapes shown in FIG. ) Large and small continuous chevron shape, almost half-surface adhesion to the outer surface of the band plate-shaped presser plate shown in FIG. 6, full surface adhesion to the outer surface of the band-plate-shaped presser plate shown in FIG. 7, flat surface shown in FIG. Any of the shape of the entire surface adhering to the outer surface of the face plate-shaped presser plate, the entire surface adhering to the outer surface of the square-shaped presser plate shown in FIG.
Thereby, the corrugated cardboard sheet a can be pressed and the occurrence of ruled line breakage and chattering can be prevented.
The thickness of the anti-slip portion 5 is preferably about 0.5 mm.

  In addition, the anti-slip portion 5 is formed by pasting a sandpaper-like material, in addition to finely crushed shells, walnuts, apricot shells, or fine particles such as alumina oxide with heat and an adhesive. Either a form in which the outer surface of the presser plate 4 is adhered and fixed, or a form in which the outer surface of the presser plate 4 is roughened by sandblasting or the like may be used.

As shown in FIG. 1, the sheet presser B configured as described above is arranged and fixed in parallel at predetermined intervals on both sides of the cutting blade 1 or the ruled line 3. In that case, the thickness of the gap between the cutting edge 2 or the tip of the ruled line 3 is adjusted so that the characteristic of the corrugated cardboard sheet a to be processed, that is, the cutting process and the ruled line process are performed with the elasticity remaining.
As a result, the sheet presser B can completely form the ruled line 6 without completely crushing the cardboard sheet a, and by suppressing the tension and movement of the components of the cardboard sheet a by the action of the anti-slip portion 5. . In addition, when the sheet presser B is arranged and fixed on both sides of the cutting blade 2, it is possible to prevent chattering such as cracking and tearing at the cutting edge by the same action as described above.
The arrangement of the pressers B having various shapes is appropriately selected and used according to the thickness of the corrugated cardboard sheet to be punched, the punched shape, the ruled line, and the like. For example, the flat plate-like presser B shown in FIG. 9A is preferably arranged around a cutting blade for punching an opening (for example, a hole for placing a hand, a hole for ventilation) existing inside the product. It is. The square-shaped presser B shown in FIG. 9B is preferably disposed and fixed on the side of a punch, a sewing machine blade or the like.

  The sheet presser of the present invention can be widely used for punching dies when punching and forming a box from a corrugated cardboard sheet.

Sectional drawing which shows the use condition of the sheet pressing tool which concerns on this invention. The top view of a sheet presser. The expanded sectional view which follows the (3)-(3) line | wire of FIG. The perspective view which shows a use condition. (A), (b), (c), (d) is a top view which shows the other modified example of the slip prevention part provided in the surface of a pressing plate. The perspective view which shows the other example (half-surface adhesion) of the non-slip | skid part in the holding | suppressing tool which carried out strip | belt plate shape. The perspective view which shows the other example (whole surface adhesion) of the non-slip | skid part in the holding | suppressing tool which carried out strip | belt plate shape. Sectional drawing of FIG. (A) is a perspective view which shows a flat plate-shaped presser, (b) is a perspective view which shows a square-piece-like presser. Sectional drawing which shows a conventional structure. (A), (b) is explanatory drawing which shows the generation | occurrence | production phenomenon of a ruled line crack at the time of cut-processing without using a pressing tool.

Explanation of symbols

A ... Punching die B ... Sheet presser 2 ... Cutting blade 3 ... Ruled line 4 ... Presser plate 5 ... Non-slip part 6 ... Ruled line

Claims (5)

  When a cutting blade attached to a punching die is used to punch a corrugated cardboard sheet into a predetermined shape and the ruled line is pressed with a ruled line, it is punched on one side or both sides of the cutting blade or the ruled line, or around the cutting edge. A sheet presser to be fixed to a mold, wherein a non-slip portion is provided on an outer surface of the presser plate to suppress tension and movement generated in a corrugated cardboard sheet during punching.   2. The sheet presser according to claim 1, wherein the presser plate has an inclined surface that is high on one side in the width direction and gradually decreases toward the opposite side, and an anti-slip portion is formed on the inclined surface. .   The sheet presser according to claim 1, wherein the presser plate is a flat plate having a constant thickness, and an anti-slip portion is formed on an outer surface thereof.   4. The sheet presser according to claim 1, wherein the anti-slip portion is formed of a rough surface having a fine particle shape. 5.   5. The sheet presser according to claim 1, wherein the non-slip portion has fine particles fixed to the outer surface of the presser plate with heat and an adhesive.

Images