JPH08399B2 - How to install the waste blade for box material production, and the waste blade for box material production - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a waste blade to a die and a method for carrying out the above method when a material for making a paper box (box material) is punched out of a cardboard base paper. The present invention relates to a suitable waste blade.

[0002]

2. Description of the Related Art FIGS. 3A and 3B are shown for explaining a method of manufacturing a box material for assembling a paper box. FIG. 3A is a principle explanatory view, and FIG. It is a top view of the punched base paper. The basic principle of manufacturing a box material for assembling a paper box will be briefly described. As shown in FIG. 1 (A), the contour line 2 of the box material is set in the base paper 1 and punched using a press machine. At the same time, the folding groove 3 is pressed. An apparatus for simultaneously performing the contour punching and the folding groove pressing will be described below. FIG. 4 is a vertical cross-sectional view schematically showing a part of the punching die for punching work and the vicinity thereof. The portion D surrounded by a virtual line in FIG. 3 is punched and pressed. The components are drawn. Reference numeral 4 denotes a lower table which is a fixing member, and is a portion corresponding to the table of the press. 5
Is an upper table which is vertically driven by a press mechanism. A plate-shaped die 6 made of hard wood is mounted on the lower surface of the upper table 5. The cutting edge 7 is planted by engraving the slot 6a in the above-mentioned die. The cutting blade 7 is a member that is driven as indicated by an arrow a to cut the base paper 1.
Further, a groove hole 6a is engraved in the above-mentioned die 6, and a streak blade 8 is planted. The streak blade 8 is a member that is driven as indicated by an arrow b to press the base paper 1 against the groove-shaped recess of the citeau 9 to form a folded groove.

Specific work based on the principle of box material production described above with reference to FIG. 3A will be described with reference to FIG. If the periphery of the box material is cut along the contour line 2 shown in (A), the base paper 1 is separated into the inside and the outside of the contour line 2 and the subsequent handling is troublesome. Is like the cutting line 2'shown in FIG.
Cut lines (remaining portion after cutting) 2a are provided at appropriate intervals. The cut 2a has a plurality of cutting edges 7 (FIG. 4).
Are formed by arranging in a row with appropriate spacing. As a result, the base paper 1 punched with the cutting line 2'is
Since the box material portion and the outer peripheral portion are intermittently connected by the plurality of cuts 2a, the edge portion of the base paper 1 can be held and handled like one sheet of thick paper. next,
The part of the box 2a (the part surrounded by the cutting line 2'is cut off by cutting the part of the cut 2a manually or by cutting it with a dedicated machine for processing (called a grinder),
Bend along the folding groove 3 to assemble the box. In order to facilitate the work of separating the box material portion as described above, as shown in FIG. 3 (B), the base paper 1 is branched from the cutting line 2 '.
An auxiliary cutting line 2b is provided reaching near the edge of the. When the auxiliary cutting line 2b is provided, the labor is reduced when manually separating the box material portion, and the efficiency is improved when processing with the grinder. FIG. 5 is a vertical cross-sectional view showing a punching die processed so that an auxiliary cutting line is punched at the same time when punching a base paper made of thick paper.
The structure of FIG. Except for the waste blade 10, the structure is the same as that shown in FIG. 4, and the waste blade 10 is provided perpendicular to the die 6 and in contact with the cutting blade 7 and perpendicularly to the cutting blade 7. FIG. 6 is a schematic exploded perspective view for explaining the work of implanting the waste blade in the cutting die. Grooving holes 6c are engraved in the punching die 6 and the waste blade 1
0 is press-fitted and fixed as indicated by arrow c. As can be understood by comparing FIGS. 5 and 6, the work of attaching the waste blade is generally performed by removing the punching die 6 from the upper table 5 and turning the punching die 6 upside down.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As shown in FIG.
There are the following difficulties associated with the work of engraving the slot 6c in the die and press-fitting and fixing the waste blade 10.

B. When the specifications of the box are determined, the shapes and dimensions of the cutting line 2'and the fold groove 3 shown in FIG. 3 (B) are determined.
However, the shape, the installation location, and the number of the auxiliary cutting lines 2b are uncertain. That is, the auxiliary cutting line 2b is set each time by the know-how based on the technical experience accumulated in the box material manufacturing factory, and is further changed according to the state of the subsequent process (particularly the performance of the grinder). However, the work of planting the waste blade requires special skill and is generally outsourced to a specialized processor. Therefore, the planting of the waste blade requires a great deal of time and labor in addition to the work such as transportation, and also requires a high processing cost. Such a defect is fatal if the delivery date is insufficient.

[0006] b. In the box-making industry, the division of labor is progressing, and in many cases, box-material processing companies work by receiving a loan from the parent company. Therefore, it is unreasonable to engrave a slot in a borrowed die. There are also cases in which processing has caused trouble without obtaining sufficient approval.

C. As can be easily understood from FIG. 6, the die 6 is already intermittently divided by the slot 6a.
It is not desirable to engrave the groove holes 6c more than that because there is a possibility of causing a problem in the strength of the die 6.

The present invention has been made in view of the above circumstances, and it is possible to quickly and easily attach and remove a waste blade without fear of damaging the die or reducing the strength of the die. The purpose is to provide technology that can.

[0009]

In order to achieve the above-mentioned object (quick and easy attachment / detachment of waste blades), the method of attaching the waste blades for box material production according to the present invention is a cutting blade used for box material production. In the case of attaching, an L-shaped blade is formed by bending a flat blade at a right angle, and one of the two orthogonal surfaces of the L-shaped blade is fixed to a flat pedestal. The pedestal is fixed to the die.

According to the waste blade of the present invention, an L-shaped blade in which a flat blade is bent at a right angle and one of the two right-angled surfaces of the L-shaped blade are in close contact with each other and fixed to each other. And a means for fixing the above-mentioned pedestal to the die in a die.

[0011]

According to the above-mentioned means, it is not necessary to dig a groove hole in the die for burying the waste blade and implanting it, and the special waste blade according to the present invention (of the structure in which the L-shaped blade is fixed on the pedestal) is used. When the pedestal of the waste blade is placed on the die and fixed, one side of the L-shaped blade is made to stand upright with respect to the die. The L-shaped blade thus made upright can punch the auxiliary cutting line. Moreover, since it is not necessary to engrave a groove hole in the die, a large mark is not left on the die. (Strictly speaking, there are also cases where holes for nails or wood screws for attaching the pedestal are left, but it can be ignored compared to the scratches due to the slot holes). Further, since it is not necessary to engrave a groove hole, attachment / detachment of the waste blade can be performed easily and quickly, and no special skill is required.

[0012]

FIG. 2 shows an embodiment of a waste blade for manufacturing a box material according to the present invention, (A) is an exploded perspective view, and (B) is an assembled perspective view. As shown in FIG. (A), an L-shaped blade 11a is formed by bending a rectangular flat blade into an L-shape, and has a width dimension equal to the length dimension L'of the L-shaped blade. A rectangular plate-shaped metal pedestal 11b having W is configured. The L-shaped blade 11a is attached to the base 11b as shown by an arrow d.
Put it on the top and fix it to each other as shown in Figure (B)
Make up 1. 11c is a spot welded portion for fixing. Reference numeral 11d is a mounting hole for inserting a nail or a wood screw when the above-mentioned pedestal 11b is mounted on a die made of wood board. To attach the pedestal 11b to a die (not shown in the figure), a double-sided adhesive tape 13 as shown by a phantom line may be used without using nails or wood screws.

In FIG. 2 (A), the L-shaped blade 11
If the thickness t of a is now considered to be zero, one surface H of the two surfaces H and V of the L-shaped blade is brought into close contact with the pedestal 11b (arrow d) and fixed. Actually, since the H part shown in the figure has a thickness, in detail, the lower side of the upper and lower two faces of the H part (the face which is bent at a right angle and opened at 90 °, not 270 °). The surface (open to the front) is closely attached to the pedestal 11b and fixed. In the present invention, the above-mentioned operation is referred to as a "right angle 2".
One of the surfaces is closely adhered to each other to be firmly fixed to each other. " FIG. 1 is a perspective view illustrating a process for explaining a method of attaching a waste blade for manufacturing a box material according to the present invention. The die 6, the groove 6a, and the cutting edge 7 shown in this figure are the same or similar components as in FIG. 6 illustrating a conventional example. The waste blade 11 shown in FIG. 1 is the waste blade 11 drawn by the solid line in FIG. Reference numeral 11 shown by a solid line in FIG.
11 'shown in phantom line.
Is a waste blade before being attached to the die 6. Throwing edge 1
1'is placed on the punching die 6 as indicated by the arrow e, the pedestal is brought into contact with the punching die 6 and fixed by the mounting screw 12. Since this work does not require engraving the groove holes 6c as shown in FIG. 6 (conventional example), it requires no special skill and can be performed quickly and easily without leaving a marked mark on the die 6. be able to. It is convenient to prepare a plurality of types of blades having long blade lengths L'or short blades in the waste blade described with reference to FIG. 2 so that a desired blade length can be selected and used. Further, as shown in FIG. 2 (B), the waste blade 11 drawn by a solid line and the waste blade 11 ″ drawn by a virtual line are installed side by side to arbitrarily set the total length La of the blade. In addition, depending on the convenience of the box material manufacturing work,
When it is necessary to change the position or the number of the auxiliary cutting lines 2b, it is quick and easy to change the installation position of the waste blade 11, and the degree of freedom in the operation of the box making operation can be improved.

FIG. 7 is a sectional view taken in a plane perpendicular to the cutting blade, which is shown for explaining the details of the structure of the cutting blade. When the cutting blade 7 is a single-edged blade and the scraping blade is installed on the spine 7a side of the cutting blade 7 as shown in FIG. (A), the corner of the top of the L-shaped blade 11a of the scraping blade has a right angle R. It should be configured to.

However, when a cutting blade is provided on the belly 7b side of the cutting blade 7 as shown in FIG. 3B, if a triangular protrusion 11f is formed at the top corner of the L-shaped blade 11a ', Three
As shown in (B), the auxiliary cutting line 2b is formed by connecting to the cutting line 2 '. Also, when the cutting blade is a double-edged blade as shown in 7'shown in FIG.
By providing a triangular protrusion 11f ′ on a ″,
As in the case of the above-mentioned FIG. (B), the effect that the auxiliary cutting line 2b is formed by being connected to the cutting line 2'is obtained.

[0016]

When the present invention is applied, it is not necessary to dig a groove hole in a die and bury the waste blade, and to implant it, and the special waste blade according to the present invention (an L-shaped blade is fixed on a pedestal is fixed). Disposal blade of structure)
When the pedestal is placed on the die and fixed, one side of the L-shaped blade stands upright with respect to the die. The L-shaped blade thus made upright can punch the auxiliary cutting line. Moreover, since it is not necessary to engrave a groove hole in the die, a large mark is not left on the die. (Strictly speaking, there are also cases where holes for nails or wood screws for attaching the pedestal are left, but it can be ignored compared to the scratches due to the slot holes). Further, since it is not necessary to engrave a groove hole, attachment / detachment of the waste blade can be performed easily and quickly, and an excellent practical effect that no special skill is required is exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a process for explaining a method of attaching a waste blade for manufacturing a box material according to the present invention.

2A and 2B show one embodiment of a waste blade for manufacturing a box material according to the present invention, FIG. 2A is an exploded perspective view, and FIG. 2B is a perspective view in an assembled state.

FIG. 3 is shown for explaining a method of manufacturing a box material for assembling a paper box, (A) is a principle explanatory view, and (B) is a punched raw paper. It is a top view.

FIG. 4 is a vertical cross-sectional view schematically showing a part of a punching die for punching work and its vicinity, for punching and pressing a portion D surrounded by an imaginary line in FIG. The constituent parts of are drawn.

FIG. 5 is a vertical cross-sectional view showing a punching die processed so that an auxiliary cutting line is punched at the same time when punching a base paper made of thick paper, showing a structure in which a scraping blade is added to the configuration of FIG. 4 described above. There is.

[Fig. 6] Fig. 6 is an exploded perspective view schematically showing the work of implanting the waste blade in the cutting die, and is a schematic drawing.

FIG. 7 is a cross-sectional view taken for explaining the details of the configuration of the waste blade and taken along a plane perpendicular to the waste blade.

[Explanation of symbols]

1 ... Base paper made of cardboard, 2 ... Contour line, 2 '... Cutting line, 2
a ... cut line of cut line, 2b ... auxiliary cut line, 3 ... fold groove, 4 ...
Lower base, 5 ... Upper base, 6 ... Die, 6a ... Groove hole (for cutting blade), 6
b ... Slot (for streak blade), 7 ... Cutting edge, 8 ... Streak blade,
Reference numeral 9 ... Cito, 10 ... Waste blade (conventional example), 11 ... Waste blade of the embodiment attached to the die, 11 ′ ... Waste blade of the embodiment before attached to the die, 11a ... L-shaped blade, 11b
... Pedestal, 11c ... Spot welding, 11d ... Mounting hole, 12
… Mounting screws, 13… Double-sided adhesive tape.

Claims (2)

[Claims] 1. When attaching a scraping blade to a die used for making a box material, a flat blade is bent at a right angle to form an L-shaped blade, and the L-shaped blade has two right-angled surfaces. One surface of the inside is fixed to a plate-shaped pedestal, and the pedestal is fixed to the die.
How to install the waste blade for box material production. 2. An L-shaped blade in which a flat blade is bent at a right angle, and a flat plate pedestal in which one of the two right-angled surfaces of the L-shaped blade is in close contact with and fixed to each other. And a means for fixing the above-mentioned pedestal in a die, the waste blade for making box material.