JP3042309U - Punching and ruled body - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a punching die and a ruled line forming body for forming accurate folds on a thick or hard board material for assembling a paper container such as a double-sided corrugated board sheet or a corrugated board sheet using a reinforced core. SOLUTION: The width of a ruled line pressing blade 2 is set to be thicker than the width of a convex receiving part 7, and the double-sided corrugated board sheet 9 is punched by the ruled line pressing blade 2 and the receiving part 7. The die-line side liner 9a is widely pressed to form ruled lines, and the cutting sheet side liner 9b is also formed with ruled lines.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a punching die and a ruled line forming body for forming an accurate ruled line that becomes a fold at the time of manufacturing on a hard or thick corrugated cardboard sheet such as a double-faced corrugated fiberboard sheet or a double-sided corrugated fiberboard sheet using a reinforced core. Is.

[0002]

[Prior art]

 Conventionally, when manufacturing a corrugated cardboard packaging container, etc., a blank as a corrugated board material is cut into a predetermined shape by a punching-type cutting blade, and a crease or a folded portion is used to fold or fold the blank into a blank. It is designed to form ruled lines to be a part, and bend or fold along these ruled lines to glue a predetermined part to form a body. In this case, in order to impress the creases that are accurate and useful for bending on the blank, a tape-shaped crease forming body that forms creases on the blank in cooperation with the scoring blade is provided on the receiving board surface. It is attached.

As described above, various ruled line forming bodies that make the bending position accurate have been devised. In FIG. 3, the ruled line forming body 100 proposed by the applicant in Japanese Patent Application No. 9-59204 is used to form the ruled line. A sectional view showing a state in which 101 is formed is shown.

In the ruled line forming body 100 of the prior application, a convex receiving portion 103 is provided at the center of a base sheet 102, and a back surface of the base sheet 102 is on a lower mold surface 105 via a pressure-sensitive adhesive layer 104. It is attached to. On the other hand, a punching die 106 is provided so as to face the ruled line forming body 100 configured as described above and the lower die plate surface 105 to which the ruled line forming body 100 is attached. The punching die 106 has a ruled blade 107 and a cutting blade (not shown), and the ruled blade 107 and the cutting blade are configured to be attached to an upper mold 108 whose upper end portion is formed of plywood. Has been done.

The ruled line forming body 100 is affixed to the lower die plate surface 105 so that the receiving portion 103 of the ruled line forming body 100 faces the ruled line pressing blade 107, and the corrugated board sheet 109 is the ruled line pressing blade. A ruled line is formed by being pressed by 107 and the receiving portion 103 of the ruled line forming body 100.

[0006]

[Problems to be solved by the device]

 However, when a thick corrugated cardboard sheet such as a double-sided corrugated cardboard sheet is clamped between the ruled line pressing blade 107 and the receiving portion 103 of the ruled line forming body 100 having a width substantially equal to the width of the ruled line pressing blade 107 to form a ruled line. Since the pulling depth of the punching die side liner of the corrugated board is pulled deeply and strongly, the force is concentrated on the ruled stamping blade part of the punching die side liner and it is pushed completely. Therefore, there is a problem that ruled lines are broken at the ruled lines.

Also, when a hard corrugated cardboard sheet such as a double-faced corrugated cardboard sheet using a reinforced core is pressed to form a ruled line as described above, similarly, the core is strong and the terrace is hard to be crushed. However, there is a problem in that the ruled line is broken because the force is concentrated on the ruled line and the force is concentrated on the ruled line.

The present invention has been made in order to solve such a problem, and even if it is a thick or hard paper container assembly plate material such as a double-sided double-faced corrugated board sheet or a corrugated board sheet using a reinforced core. It is an object of the present invention to provide a punching die and a ruled line forming body capable of forming accurate folds.

[0009]

[Means for Solving the Problems and Functions / Effects]

 In order to achieve the above-mentioned object, the punching die according to the present invention cooperates with a ruled line forming body having a convex receiving portion provided on the lower die plate surface to form a ruled line on the plate material for assembling the paper container, which is bent at a required angle. In a punching die having a ruled blade to be formed, the width of the ruled blade is formed to be thicker than the width of the receiving portion.

In the present invention, the board material for assembling the paper container is pinched by the convex receiving portion at the position opposite to the ruled blade and the ruled blade having a wider width than the receiving portion to form the ruled line. Thus, for example, when forming a ruled line on a thick or hard paper container assembly plate, the ruler pressing blade side of the paper container assembly plate is widely clamped, and the condition of being cut off by a blade disappears. . Therefore, it is possible to prevent the ruled line from being broken. In addition, the ruled line and the ruled line forming body form ruled lines on the front and back sides of the plate material for assembling the paper container, and the folding fulcrum is set, so that the folding can be performed accurately.

The ruled line forming body according to the present invention is a ruled line forming body having a convex receiving portion for forming a ruled line on the plate material for assembling a paper container in cooperation with a ruler pressing blade to bend the ruled line at a required angle. Is formed to be narrower than the width of the ruled line pressing blade.

In the present invention, the plate material for assembling the paper container is located at a position where the ruled blade and the ruled blade face each other, and is clamped by the convex receiving portion that is narrower than the width of the ruler blade to form a ruled line. It In this way, for example, when forming a ruled line on a thick or hard paper container assembly plate, the ruler pressing blade side of the paper container assembly plate material is pressed wider than the ruled line forming body, and it is pressed by the cutter. Such a situation disappears. Therefore, it is possible to prevent the ruled line from being broken. Further, the ruled line is formed from the front and back sides on the plate material for assembling the paper container by the ruled blade and the ruled line forming body, the folding fulcrum is determined, and it is possible to fold accurately.

[0013]

[Embodiment of the invention]

 Next, specific embodiments of the punching die and the ruled line forming body according to the present invention will be described with reference to the drawings.

FIG. 1 shows a cross-sectional view of a punching die and a ruled line forming body according to an embodiment of the present invention, and FIG. 2 shows a punching die and a ruled line forming body according to the present embodiment. A state diagram for forming ruled lines and cut lines is shown in FIG.

In the punching die 1 of the present embodiment, a ruled line pressing blade 2 that forms a ruled line and a cutting edge (not shown) that forms a cutting line are attached to an upper die 3 formed of plywood. . The cross-sectional shape of the leading edge of the ruled line pressing blade 2 is U-shaped. A cutting plate (lower die plate surface) 4 is provided at a position facing the punching die 1, and a ruled line forming body 5 is attached to the cutting plate 4. In this ruled line forming body 5, a base sheet 6 is provided with a convex receiving portion 7 having a substantially rectangular cross section, and the receiving portion 7 is formed through a pressure-sensitive adhesive layer 8 on the back surface of the base sheet 6. It is arranged to face the push blade 2.

Between the ruled line forming body 5 and the cutting plate 4 thus attached to the cutting plate 4 and the punching die 1, a double-sided double-tiered ball sheet 9 on which ruled lines and cut lines are formed is installed. It The width of the ruled blade 2 is set thicker than the width of the convex receiving portion 7. Preferably, the width of the ruled blade 2 is 2 to 3 mm and the width of the convex receiving portion 7 is 0 mm. It is 0.8 to 1.0 mm. The double-sided corrugated board sheet 9 has a thickness of about 8 mm, which is thicker than the double-sided corrugated board sheet (thickness of about 5 mm).

By bringing the punching die 1 and the cutting plate 4 configured as described above closer to the punching die 1 side, the double-sided corrugated board sheet 9 is sandwiched between the ruled blade 2 and the convex receiving portion 7. Thus, ruled lines are formed on the punching die side liner 9a and the cutting plate side liner 9b of the double-sided corrugated board sheet 9. Simultaneously with the formation of this ruled line, the double-faced double-faced corrugated board sheet 9 is sandwiched between the cutting blade and the cutting plate 4 to form a cut line.

The thickness of the double-faced double-faced corrugated board sheet 9 thus clamped is about 1.3 mm (the thickness of the double-faced corrugated board sheet is about 0.8 mm). The pulling strength of the liner 9a from the ruled pressing blade 2 is greater than the pulling strength of the double-sided ball sheet.

When forming a ruled line on such a double-sided corrugated board sheet 9, the punching liner 9a of the double-sided corrugated board sheet 9 is pinched with a wide width by using the ruled line pressing blade 2 with the wide width, There is no longer a situation where the blade has been completely pressed. Therefore, it is possible to prevent the ruled line from being broken in the ruled line portion. Further, since the ruled line is also formed on the cutting plate side liner 9b, the fulcrum of bending is determined and the bending can be performed accurately.

In the present embodiment, the ruled lines are formed on the double-sided corrugated board sheet, but the invention is not limited to the double-sided double-faced corrugated board sheet. For example, a double-sided double-sided corrugated board sheet or a double-sided corrugated board sheet using a reinforced core may be used. The same effect can be obtained by forming ruled lines on a hard corrugated cardboard sheet.

In this embodiment, the width of the ruled pressing blade 2 is about 2 to 3 mm and the width of the receiving portion 7 is about 0.8 to 1.0 mm, but the width is not limited to this. It can be set to an appropriate width depending on the thickness and the like.

In this embodiment, the tip cross-sectional shape of the ruled pressing blade 2 is formed in a U shape, but the ruled pressing blade 2 has a substantially rectangular cross section with a rounded corner, and the corner is chamfered. It can be set to have a substantially rectangular cross section or a rectangular cross section.

In the present embodiment, the receiving portion 7 is formed to have a substantially rectangular cross section. The receiving portion 7 has a substantially rectangular cross section with a rounded corner portion, a substantially rectangular cross section with a chamfered corner portion, and a cross section. It can be set to be circular or semi-elliptical in cross section.

[Brief description of the drawings]

FIG. 1 is a sectional view of a punching die and ruled line forming body according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which ruled lines are formed on a corrugated cardboard sheet by the punching die and ruled line forming body of the present embodiment.

FIG. 3 is a cross-sectional view showing a state where ruled lines are formed by the ruled line forming body of the prior application.

[Explanation of symbols]

 1 Punching Die 2 Ruled Blade 3 Upper Die 4 Cutting Plate 5 Ruled Liner 6 Base Sheet 7 Receiver 9 Corrugated Cardboard Sheet

Claims (2)

[Utility model registration claims] 1. A punching die having a ruled blade for forming a ruled line on the board material for assembling a paper container in cooperation with a ruled line forming body having a convex receiving portion provided on a lower die plate surface, A punching die having a ruled blade, wherein the width of the ruled blade is formed thicker than the width of the receiving portion. 2. A ruled line forming body having a convex receiving part for forming a ruled line that is bent at a required angle in cooperation with a ruled pressing blade on the plate material for assembling a paper container, wherein the width of the receiving part is the ruled pressing blade. A ruled line forming body characterized by being formed thinner than the width of the ruled line.