JP2001030192A - Slitter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge chips to a fixed position by providing a guide for introducing the chips downward at the back of a contact position between a pair of rotary blades. SOLUTION: In this slitter device, rotary blades 3, 4 are rotated reversely as shown by arrows and cut a side edge of a fed sheet S0. A production part S1 separated from its chip (a) is conveyed to the downstream side of the rotary blades 3, 4 by a pair of upper and lower feeding rollers 5, 6 provided on the downstream side. A guide 7 is provided at the back of the contact portion between the rotary blades 3, 4, and the guide 7 has, in its upper part, a circular arc surface 7a along the outer periphery of the upper rotary blades 3 and has a circular-arc-like guide surface 7b in its lower part. Since the guide 7 having the guide surface 7b is provided at the back of the contact part between the rotary blades 3, 4, and cut and removed chip (a) is guided by the guide surface 7b of the guide 7 to be discharged downward, and the chip can be easily recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter for cutting and removing an edge of a sheet such as a corrugated cardboard sheet while the sheet is moving.

[0002]

2. Description of the Related Art Conventionally, a slitter device is provided in a transfer path of a corrugated cardboard sheet transferred in one direction, and the edge of the corrugated cardboard sheet is cut and removed by the slitter device to form a corrugated cardboard sheet of a predetermined size. It is usually done from.

[0003] As the above-mentioned slitter device, the one shown in FIG. 4 has been conventionally known. In this slitter device, circular rotating blades 13 and 14 are attached to rotating shafts 11 and 12 arranged vertically, respectively, and a part of a side face is abutted, and the rotating shafts 11 and 12 are rotated in opposite directions. Te, the upper and lower edges of the cardboard sheet S ₀ which is transported in the direction of the arrow rotary blade 1
Cutting and removal are performed at 3 and 14. Figure a shows the swarf formed by cutting, S ₁ denotes a product unit. The product portion S ₁ is conveyed to the downstream side by the pair of feed rollers 15 and 16.

[0004]

[SUMMARY OF THE INVENTION Incidentally, in the above-described slitter, in order to cut off the edge in a state for running the corrugated board sheet S _0, cuttings a has a transport direction of the velocity component of the cardboard sheet S ₀ , Cardboard sheet S
It will be discharged in the transfer direction of ₀ . At this time, the size and weight of the cutting wastes a and the shape thereof are different, so that the discharge position is not constant, and there is an inconvenience that the wastes are scattered on the floor and difficult to collect.

[0005] An object of the present invention is to provide a slitter device capable of discharging the cut swarf that has been cut and removed to a substantially fixed position.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a pair of rotary blades are provided above and below a sheet transfer path by contacting a part of a side surface with the pair of rotary blades. A slitter device that cuts and removes an edge of a sheet fed by being rotated in a reverse direction, wherein a guide that guides cutting chips formed by cutting behind a contact position between the pair of rotary blades is provided. It was adopted.

[0007] According to the above configuration, the cutting waste cut and removed by the pair of cutting blades is guided downward by the guide, and is discharged to a substantially fixed position. Therefore, the cutting waste can be easily collected without being scattered.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown, the seat rotation axis 1 of the pair in the transport path of the S ₀ being transferred in one direction,
2 are provided on the upper and lower sides, and a blade holder 8 is
a, 8b are attached, and circular rotary blades 3, 4 are attached to the blade holders 8a, 8b. Blade holder 8
Reference numerals a and 8b prevent rotation around the rotation shafts 1 and 2 and rotate together with the rotation shafts 1 and 2. In addition, rotary blades 3, 4
Are mounted so that a part of the side faces contact each other.

[0009] The rotary blade 3 and 4, as shown by the arrows in FIGS. 1 and 2 are rotated in opposite directions, come fed to cut the side edge of the sheet S _0. a indicates cutting chips formed by the cutting, and the product portion S ₁ from which the cutting chips a have been cut is moved downstream by a pair of upper and lower feed rollers 5 and 6 provided downstream of the rotary blades 3 and 4. Conveyed.

A guide 7 is provided behind the contact portion between the rotary blades 3 and 4.
Is provided. The guide 7 has an arcuate surface 7a along the outer periphery of the upper rotary blade 3 at the upper part, and an arcuate guide surface 7 at the lower part.
b is provided.

As described above, by providing the guide 7 having the guide surface 7b behind the contact portion of the rotary blades 3 and 4,
The cutting waste a cut and removed by the rotary blades 3 and 4 is guided by the guide surface 7b of the guide 7 and discharged downward.

For this reason, the cutting waste a is always discharged to a predetermined position, and by providing a waste storage portion at the discharge position, the cutting waste a is reliably discharged into the storage portion. And can be collected very easily because it does not scatter to the surroundings.

Although not shown in the drawing, the pair of rotary blades 3 and 4 are movably supported along the rotary shafts 1 and 2 and are adjusted in position by a moving device. The guide 7 is simultaneously moved when the positions of the rotary blades 3 and 4 are adjusted.

[0014]

As described above, according to the present invention, behind the contact portion of the pair of rotary blades for cutting the edge of the sheet,
By providing the guide for guiding the cutting chips formed by cutting the rotary blade downward, the cutting chips can be discharged to a predetermined position, and the cutting chips can be easily collected.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a slitter device according to the present invention.

FIG. 2 is an enlarged sectional view showing a part of FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a longitudinal sectional front view showing a conventional slitter device.

[Explanation of symbols]

S ₀ sheet a Cutting waste 3, 4 Rotary blade 7 Guide

Claims (1)

[Claims] 1. A pair of rotary blades are provided vertically on a sheet transfer path with a part of their side surfaces in contact with each other, and the pair of rotary blades are rotated in opposite directions to cut and remove an edge portion of a fed sheet. A slitter device provided with a guide for guiding cutting chips formed by cutting downward behind a contact position between the pair of rotary blades.