JPH06297397A - Punching-out device for corrugated cardboard sheet - Google Patents

Abstract

PURPOSE:To permit the high speed operation by suppressing the shock noise and vibration in punching-out a corrugated cardboard sheet. CONSTITUTION:A roll 3 having a punching-out cutter is formed by fixing a cutter installation plate 34 on a roll body 31 made of metal through an elastic resin layer 32 and a metal plate 33, and a roll 4 made of metal is arranged apposite to the roll having the punching-out cutter. Though, in punching out, a cutter 35 contacts a base roll 4 with a weak shock, this shock is absorbed by the elastic deformation of the elastic resin layer 32 of the roll 3 having the punching-out cutter, and the cutter 35 and the base roll 4 are prevented from being damaged, and the generation of the large shock and vibration is suppressed, and the high speed operation is enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device for punching corrugated board sheets such as punching holes.

[0002]

2. Description of the Related Art FIG. 4 shows a printer die cutter for printing and punching a corrugated cardboard sheet. The printer die cutter is a printing device (1) on the upstream side of the transition path of the corrugated board sheet (5) and a ruled line partitioning device on the downstream side.
(2) and a punching device (6) are provided. Printer
In (1), one or a plurality of plate cylinders (11) (11a) (11b) of the same diameter are arranged above the transition path of the corrugated board sheet (5), and the corrugated board sheet (5) is opposed to the plate cylinder. Roll received below the transition path
(12) (12a) (12b) are deployed.

The ruled line partitioning device (2) is a corrugated cardboard sheet (5).
A scoring roll (21) is provided on the upstream side and a roll with partition blades (23) is provided on the downstream side above the transition path of the corrugated cardboard sheet (5). The table rolls (22) and (24) are provided opposite to (23). Punching device
In (6), a roll (3) with a punching blade is provided above the transition path of the corrugated board sheet (5), and a base roll (4) is provided below the roll (3) so as to face the roll (3). In use, the punching device (6) may be arranged between the printing device (1) of the ruled line partitioning device (2).

During passage between the plate cylinders (11) (11a) (11b) of the printing apparatus (1) and the receiving rolls (12) (12a) (12b), the corrugated cardboard sheet (5) is printed. , Further, the corrugated cardboard sheet (5)
As shown in FIG. 6, the ruled line partitioning device (2) is provided with a ruled line (51) for manufacturing and a partition groove (52), and the punching device (6) punches holes for ventilation or for a handle. Punching processing such as (53) is performed.

As shown in FIG. 5, a roll with a punching blade (3)
Is configured by penetrating the arcuately curved mounting plate (34), mounting the blade (35), and bolting the mounting plate (34) to the metal roll main body (31).

The surface of the base roll (4) disposed opposite to the roll (3) with a punching blade is made of urethane resin, and the blade (35) on the roll (3) with a punching blade is the urethane base. The roll (4) bites into the roll (4) with a big impact and hits strongly.
The diameter of the table roll (4) is smaller than the diameter of the roller (3) with a punching blade, and the blade (35) repeatedly hits the same position on the table roll (4) to form the table roll (4). Is prevented from being locally damaged.

[0007]

Rolls with punching blades
There is a clearance for rotation between the rotating shaft (38) of (3) and the bearing metal (not shown) of the frame,
Due to this clearance, a large impact sound and vibration are generated each time the blade (35) collides with the base roll (4). For this reason,
It was not possible to rotate the roll with a punching blade (3) at a high speed to improve the work efficiency, and it was forced to operate at 60 rpm or less per minute. The present invention clarifies a corrugated cardboard sheet punching device capable of high-speed operation while suppressing generation of vibration and noise even when rotated at a high speed.

[0008]

In a corrugated board sheet punching device of the present invention, a roll with a punching blade and a base roll are arranged opposite to each other so that the axial center distance can be adjusted, and a corrugated board sheet is passed between both rolls to punch the sheet. In a corrugated board sheet punching device for punching holes and the like, a roll (3) having a punching blade has an elastic resin layer (32) formed on a metal roll body (31), and the elastic resin layer (32). The metal plate (33) is coated on the blade (35)
It is formed by covering the metal plate (33) with the blade mounting plate (34) through which the base roll (4) is made of metal.

[0009]

[Operation and effect] Both rolls (3) so that the blade (35) of the roll with punching blade (3) comes into contact with the base roll (4) with a light touch
Adjust the interval in (4). The rolls (3) and (4) are rotated to draw the corrugated board sheet (5) between the rolls (3) and (4), and the corrugated board sheet (5) is punched by the blade (35) of the roll (3) with a punching blade.
Punch (5).

At the time of punching, the blade (35) hits the base roll (4) with a weak impact, and this impact is caused by the roll (3) with a punching blade.
Absorbed by elastic deformation of the urethane resin layer (32) of
It is possible to suppress damage to the (35) and the base roll (4), and to suppress generation of large impact noise and vibration. Therefore, the roll with punching blade (3) is used for 150 minutes per minute.
Even when operating at the speed of rotation, 6 in 1 minute with conventional equipment
It was possible to suppress noise and vibration more than during zero revolution operation. The inner end of the blade (35) contacts the metal plate (33), and the blade (3
The inner end of 5) does not damage the urethane resin layer (32).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a printer die cutter equipped with a corrugated board sheet punching device (6) according to the present invention, but it goes without saying that the corrugated board sheet punching device (6) can be implemented alone. Printer die cutter printing equipment
Each plate cylinder (11) (11a) (11b) of (1), a crease forming roll (21) of a crease separating device (2), a roll with a partition blade (23), and a receiving roll (12) arranged opposite to them. (12a) (12b), stand roll (22)
(24) is the same as the conventional one.

At the downstream end of the ruled line partitioning device (2), a roll (3) with a punching blade and a base roll (4) are arranged opposite to each other with a transition path of the corrugated cardboard sheet (5) interposed therebetween. A corrugated board sheet punching device (6) is provided. In the examples, for the reasons described below, the roll with a punching blade (3) is
The lower position of the transition path of the corrugated cardboard sheet (5), that is, the plate cylinder (1
Although it is arranged at the position opposite to 1) and the table roll (4) is arranged at the upper position, the corrugated cardboard sheet (5) is arranged in the same manner as the conventional one.
Roll with punching blade (3) above, table roll (4) below
Can be deployed.

In the embodiment, the diameter of the table roll (4) is the plate cylinder (1
It has the same diameter as 1), and the surface is made of metal, not conventional urethane resin. The table roll (4) is
A steel roll is tempered to form a sorbite structure, and the surface is hard chrome plated. The sorbite structure is neither as hard nor brittle as the martensite structure obtained by quenching steel, is easy to plate, is harder and tougher than the pearlite structure, and has excellent impact resistance.

The roll with punching blade (3) is a base roll (4)
As shown in Fig. 2, the metal roll body is formed to have the same diameter as
An elastic resin layer such as urethane resin with a thickness of about 2 mm in (31) (32)
A metal plate having a thickness of about 1.6 mm on the elastic resin layer (32)
The metal plate (33) is covered with a blade mounting plate (34) which covers (33) and has the blade (35) penetratingly mounted, and is bolted to the roll body (31).

As shown in FIG. 3, the blade (35) of the embodiment is combined into an elliptical shape by the straight blade plates (36) (36) and the curved blade plates (37) (37) to form a blade mounting plate (34). ) From the surface of corrugated sheet
The cutting edge is exposed corresponding to the thickness of (5).

However, the blade (3) of the roll (3) with a punching blade is
Both rolls so that 5) touches the base roll (4) with a light touch
(3) Adjust the interval of (4). Rotate the rolls (3) and (4) to draw the corrugated board sheet (5) between the rolls (3) and (4),
The corrugated cardboard sheet (5) is punched by the blade (35) of the roll (3) with a punching blade.

During punching, the blade (35) hits the base roll (4) with a weak impact, and this impact is due to the roll (3) with a punching blade.
Absorbed by elastic deformation of the elastic resin layer (32) of the blade (35)
And damage to the base roll (4) can be suppressed,
Generation of large impact noise and vibration can be suppressed. Therefore, even when the bladed roll (3) was operated at a speed of 150 revolutions per minute, noise and vibration could be suppressed more than when the conventional device was operated at 60 revolutions per minute. Blade (35)
The inner end of the blade contacts the metal plate (33), and the inner end of the blade (35) does not damage the urethane resin layer (32).

The corrugated board sheet (5) has a thickness of about 3 to 8 mm, and when the corrugated board sheet (5) passes between the roll (3) with a punching blade and the base roll (4),
On the surface of the roll (3) with the punching blade of (5), the rotating blade
(35) exerts a pressing force on the corrugated cardboard sheet (5) and a strong pulling force to the feeding side, and as shown in FIG. 6, the periphery of the punching hole (53) is crushed and the sheet feeding direction indicated by the arrow A. A break line (54) is formed which extends in the direction opposite to.

In the conventional printer die cutter shown in FIG. 4, the roll (3) with a punching blade is arranged above the transition path of the corrugated cardboard sheet (5) like the plate cylinder (11). On the printed surface of 5), that is, the surface that is the outer side during manufacturing, a break line (54) around the punched hole (53) appears, impairing the commercial value of the product.

However, in the embodiment, the corrugated cardboard sheet (5)
Of the corrugated cardboard sheet (5) by the roll (3) with a punching blade that is provided below the transition path of the plate, that is, on the side opposite to the plate cylinder (11).
In order to punch out, that is, to punch the corrugated cardboard sheet (5) from the surface opposite to the printing surface, a break line (54) around the punching hole (53) appears on the surface opposite to the printing surface. Therefore, when the bellows is assembled with the printing surface outside, the fracture line (54) around the punching hole (53) appears on the inside surface of the bellows and cannot be seen from the outside, impairing the commercial value of the bellows. Absent.

Further, simply by reversing the arrangement positions of the plate cylinder (11) and the roll (3) with a punching blade with respect to the transition path of the corrugated board sheet (5), the base roll (3) for the roll (3) with a punching blade is reversed. 4) is located on the same side as the plate cylinder (11) with respect to the transition path of the corrugated board sheet (5), and the base roll (4) rubs the printed surface of the corrugated board sheet (5) on which the ink has not dried. This may be transferred to the next corrugated cardboard sheet (5) and soil the corrugated cardboard sheet (5).

However, as in the embodiment, the table roll (4) and the plate cylinder are used.
By making the diameters of (11) the same and making the surface of the base roll (4) a non-deformable metal surface, even if the ink of the corrugated cardboard sheet (5) immediately after printing adheres to the base roll (4), Since the ink adhering portion comes into contact with the same printing position of the corrugated cardboard sheet (5) to be passed next, it is possible to prevent the ink from being transferred and stained on a portion other than the printing position of the corrugated cardboard sheet (5).

In carrying out the present invention, a corrugated cardboard sheet
Even if the plate cylinders (11), (11a), and (11b) are arranged below the transition passage of (5) and the roll with a punching blade (3) is arranged above the transition passage, the same effect as above can be obtained. it can.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or limiting the scope. The configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of a printer die cutter.

FIG. 2 is a cross-sectional view of a main part of a corrugated board sheet punching device.

FIG. 3 is a perspective view of a main part with a part of a roll with a punching blade cut away.

FIG. 4 is a schematic explanatory diagram of a conventional printer die cutter.

FIG. 5 is a cross-sectional view of essential parts of a conventional roll with a punching blade and a base roll.

FIG. 6 is a perspective view in which a part of a corrugated board sheet is cut away.

[Explanation of symbols]

 (3) Roll with punching blade (31) Roll body (32) Elastic resin layer (33) Metal plate (34) Blade mount (4) Roll (6) Corrugated sheet punching device

Claims (1)

[Claims] 1. A corrugated cardboard sheet having a punching blade roll and a base roll arranged opposite to each other so that the axial center distance can be adjusted, a corrugated cardboard sheet is passed between both rolls, and a punching hole or the like is punched in the sheet. In the apparatus, the roll (3) with a punching blade has an elastic resin layer (3
2) is formed, the elastic resin layer (32) is coated with a metal plate (33),
A corrugated board sheet punching device, which is formed by covering a metal plate (33) with a blade mounting plate (34) having a blade (35) mounted therethrough, and a base roll (4) whose surface is formed of metal.