JPH08192393A - Blade fitting device for corrugator cutter - Google Patents

Abstract

PURPOSE: To easily adjust the height of a blade by providing a blade height adjusting bar, which can be vertically slid by an adjusting screw and on which the rear end of a blade is mounted at one side opposite to the inclined surface of a recessed groove. CONSTITUTION: In the case where the blade tip of a blade 11B is worn by abrasion or the like, a bolt 13 is loosened, and a tool such as a driver is inserted to a tool insertion hole so that an adjusting screw 8 is appeared, and a blade height adjusting bar 6B is separated from the bottom of a groove 5 and the blade 11 is moved forward with this movement, and the blade tip of the blade 11B is projected at the predetermined quantity so as to adjust the blade height. Continuously, the bolt 13 is fastened, and a blade fixing cramp bar 12B is moved in the axial direction so as to fix the blade 11B. At this stage, blade height adjustment of the blades 11A, 11B is facilitated in the condition that both the blades are positioned in nearly parallel with a line, which connects the axis of each upper and lower cylinder, with a distance when the blade tips of both the blades abut on each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade attachment device for a corrugator cutter that conveys a sheet material such as a paper or corrugated board sheet and cuts it at right angles to the conveying direction.

[0002]

2. Description of the Related Art Conventionally, as a corrugator cutter for cutting a sheet, for example, as shown in FIGS. 6 and 7, a pair of upper and lower cylinders 21A and 21B arranged side by side has a rotation axis 22 of the sheet S. The cylinders 21A and 21A are arranged side by side with a slight inclination to the transport path 24 from a right angle.
It has a structure in which blades 25A and 25B are helically wound around and fixed to the outer periphery of B, respectively, and cutting resistance can be reduced by such a rotary blade type. First,
As shown in FIG. 8, the tangents 26 formed on the outer circumferences of the cylinders 21A and 21B by processing the blades 25A and 25B into a linear shape.
The knife 25 on the knife receiving surfaces 27A and 27B along the direction of
While applying A and 25B, they are wound with bending within elastic deformation. At that time, a large number of elongated holes 28 are formed in the blades 25A and 25B, and the bolt 2 passing through the elongated holes 28.
9 are fastened to the cylinders 21A and 21B by tightening 9, and in order to allow the head 29a of the bolt 29 to escape from the pass line of the sheet S, the bolt 29 is attached to the front surface side of the slot 28.
The counterbore portion 30 into which the head portion 29a is inserted is processed. Then, a cutout groove 35 is formed in the cylinder 21B behind the knife receiving surface 27B, and an adjusting screw 33 is screwed into the seat plate portion 21b generated by this from the rear, and the tip of the adjusting screw 33 is attached to the rear surface of the blade 25B. Abutting against.

[0003]

By the way, in the blade mounting device for the corrugator cutter as described above, in order to adjust the height of the blades 25A and 25B, the adjusting screws 33 attached to the blades must be individually adjusted. , It took a lot of time and effort for adjustment. Also, the blade 25
To fix the A and 25B to the cylinders 21A and 21B, it is necessary to tighten and fix the bolts 29 one by one, which takes time and labor, and further, the adjustment thereof is extremely difficult. In particular, adjustment is done by bolts one by one, so when cutting with a bolt, and where there is no tightening between bolts, the blade bends, the blade does not fit in the cylinder, and the sheet is cut. There was a flaw.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a tool mounting device for a corrugator cutter, which is capable of easily adjusting the height of the tool and is configured so as not to bend the tool. It is what

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, in which a pair of cylinders are provided in parallel,
A corrugator cutter blade mounting device for cutting a corrugated cardboard sheet in which a blade is helically mounted on each of the outer circumferences of the cylinders, wherein the pair of cylinders are provided on each outer circumference in a helical shape, and one side surface of the groove is an inclined surface. A blade mounting portion having a groove, and fitted in the lower portion of the groove,
A blade height adjusting bar that is slidable up and down by an adjusting screw that is screwed at a predetermined interval, and has the rear end of the blade mounted on one side opposite to the inclined surface of the concave groove, and the concave It is slidably fitted in the upper part of the groove, and one side contacts the inclined surface of the groove,
The other side is in contact with the side surface of the blade, and a blade fixing clamp bar having a blade fixing hole penetratingly provided at a predetermined interval,
And a fitting tightening means which is inserted into the blade fixing hole of the blade fixing clamp bar and has a tip fitted to the cylinder.
By tightening the fitting tightening means, the blade fixing clamp bar is tightened and the blade is fixed to the cylinder. Further, the blade fixing clamp bar may have a tool insertion hole for operating the adjustment screw, which is provided between the adjacent blade fixing holes.

[0006]

According to the above structure, the adjusting screw is retracted so that the bottom surface of the blade height adjusting bar is brought into contact with the bottom of the concave groove of the cylinder,
By mounting the rear end of the blade on the blade height adjusting bar and then tightening the fitting tightening means, the blade fixing clamp bar is tightened and the blade is fixed to the cylinder. When the tip of the blade is worn out due to wear or the like, the fitting tightening means is loosened, the tool is inserted into the tool insertion hole, the adjustment screw is advanced by operating the tool, and the bottom of the blade height adjusting bar is moved to the cylinder. The groove is moved away from the bottom of the groove, the blade edge of the blade is advanced by a predetermined amount, and the fitting clamping means is tightened to adjust the blade fixing clamp bar, and the blade is fixed to the cylinder.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a corrugator cutter blade mounting device according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a tool mounting device for a corrugator cutter. As shown in FIG. 1, a pair of upper and lower cylinders 1A and 1B arranged side by side has protrusions 3A and 1A on outer circumferences 2A and 2B, respectively. 3B is formed. The protrusions 3A, 3
B is installed upright on the outer circumferences 2A and 2B in a helical shape obliquely with respect to the rotation center so as to approach the rotation center toward the rear side in the rotation direction (see FIG. 6).

Then, a groove 5 is formed at the substantial center of the protrusions 3A and 3B.
A and 5B are provided, and the grooves 5A and 5B have upper portions 5Aa and 5A.
One side of Ba is inclined and the lower portions 5Ab and 5Bb are formed straight. Lower portions 5Ab, 5 of the grooves 5A, 5B
Bb is fitted with blade height adjusting bars 6A and 6B, and the blade height adjusting bars 6A and 6B are for bolts for inserting fixing bolts described later as shown in FIGS. 1 and 2. Screw holes 9 for screwing the holes 7 and the adjusting screws 8 are alternately provided, and notches 6Aa and 6Ba are provided on the opposite side of the grooves 5A and 5B from the inclined surface side. Tool height adjustment bar 6
The cutouts 6Aa, 6Ba of A, 6B have blades 11A, 11
The rear end of B is fitted, one side of the blade abuts on the straight surfaces of the grooves 5A, 5B, and the tip of the blade is projected from the projections 3A, 3B.

The upper portions 5Aa, 5B of the grooves 5A, 5B
The tool fixing clamp bars 12A and 12B are fitted to a, one side of the tool fixing clamp bars 12A and 12B abuts on the inclined surfaces of the upper portions 5Aa and 5Ba of the grooves 5A and 5B, and the other side is the tool 11A. , 11B, and a counterbore portion 14 into which the head portion 13a of the bolt 13 is inserted and which is provided above the bolt hole 7, and below the counterbore portion 14 a screw portion of the bolt 13 is provided. A bolt hole 15 through which the tool is inserted is provided through, and a tool insertion hole 17 through which a tool for operating the adjusting screw 8 can be inserted is provided above the screw hole 9 (see FIG. 3).

The threaded portion of the bolt 13 has a bolt hole 1
5, 7 are inserted, and the tips are screwed into the screw holes 18A, 18B of the cylinders 1A, 1B. Then, the blade height adjusting bars 6A, 6B, the adjusting screws 8, 8, ..., The blade 11A,
11B, the blade fixing clamp bars 12A, 12B, and the bolts 13, 13, ... Include a blade attaching device 19 of the corrugator cutter.

Next, the operation of the tool attaching device 19 for the corrugator cutter according to the present invention will be described with reference to FIGS. 4 and 5. Since the upper cylinder 1A and the lower cylinder 1B have the same structure, the lower cylinder 1B will be described. First, as shown in FIG. 4, when the adjusting screw 8 is retracted, the bottom surface of the blade height adjusting bar 6B comes into contact with the bottom of the groove 5B, the rear end of the blade 11B is fitted into the notch 6Ba, and the tip is projected. By protruding from the portion 3B and tightening the bolt 13, the blade fixing clamp bar 12B slides on the inclined surface of the groove 5B and moves in the axial direction to fix the blade 11B, and in this state, the vertical cylinder 1
The sheet is cut by rotating A and 1B.

When the cutting edge of the cutting tool 11B is worn out due to wear or the like, the bolt 13 is loosened and a tool such as a screwdriver is inserted into the tool insertion hole 17 to advance the adjusting screw 8 as shown in FIG. And the blade height adjusting bar 6B is in the groove 5.
Separated from the bottom of B, the blade 11B also advanced with it,
The blade edge of the blade 11B is projected by a predetermined amount to adjust the blade height, and then the bolt 13 is tightened to move the blade fixing clamp bar 12B in the axial direction to fix the blade 11B. At this time, as shown in FIG. 1, the blade heights of the blades 11A and 11B are adjusted so that when the blade edges of the blades are in contact with each other, the blades are substantially parallel to each other with a distance α from the line connecting the axes of the upper and lower cylinders. In this state, the height of the blade can be easily adjusted, and the shearing force at the time of cutting the sheet is large as compared with the conventional method in which the blade is attached in the tangential direction of the cylinder.

Accordingly, since the bolt is tightened and the blade is fixed by the surface with the blade fixing clamp bar, the blade is fixed by the bolt as in the conventional case, and the blade is not bent between the bolts where it cannot be tightened. Does not occur,
The bending of the blade can be prevented. Also, instead of directly adjusting the height of the tool with the adjusting screw, the height of the tool is adjusted with the adjusting screw and the tool height adjusting bar, so that the tool height can be adjusted quickly and easily. The blade height can be adjusted in a state substantially parallel to the line connecting the axial centers of the upper and lower cylinders, and the blade height can be adjusted more easily. Also, since the head of the bolt is embedded in the counterbore part of the blade fixing clamp bar, the head of the bolt does not protrude to the outer periphery of the cylinder, and the amount of protrusion of the blade edge of the blade can be reduced, resulting in smooth operation. The sheet can be cut into. Although the bolts are used as the fitting and tightening means in the above-described embodiments, it goes without saying that other fitting and tightening means may be used.

[0014]

As described above, according to the present invention,
Since the blade is fixed on the surface with the blade fixing clamp bar,
Unlike the conventional technique, the blade is fixed with a bolt, and the blade does not bend in a place where it cannot be tightened between the bolts, so that the blade can be prevented from bending.
Also, since the height of the blade is adjusted with the adjusting screw and the blade height adjusting bar, the blade height can be adjusted quickly and easily and accurately, and the blade height adjustment connects the axes of the upper and lower cylinders. The blade height can be adjusted more or less parallel to the line, and the blade height can be adjusted more easily, and the time required to adjust the blade height can be greatly shortened. It is possible to improve. In addition, when the blade edges of both blades are in contact with each other, the blades are in a substantially vertical state, and it is possible to increase the shearing force at the time of cutting the sheet as compared with the conventional method in which the blades are attached in the tangential direction of the cylinder. It can be cut cleanly. Further, since the tool fixing hole for operating the adjusting screw is provided through the blade fixing clamp bar, the adjusting screw can be easily operated, and the blade height can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a side view of a tool mounting device for a corrugator cutter according to the present invention.

FIG. 2 is a plan view of a blade height adjusting bar of the blade mounting device for a corrugator cutter according to the present invention.

FIG. 3 is a plan view of a blade fixing clamp bar of the blade mounting device for a corrugator cutter according to the present invention.

FIG. 4 is a side cross-sectional view showing a state where the adjusting screw is retracted and the lower surface of the blade height adjusting bar is in contact with the bottom of the groove, and the blade is retracted.

FIG. 5 is a side cross-sectional view showing a state where the adjusting screw has advanced and the blade height adjusting bar has moved in a direction away from the bottom of the groove, and the blade has advanced.

FIG. 6 is a perspective view showing a blade mounting device for a conventional corrugator cutter.

FIG. 7 is a plan view showing a blade mounting device for a conventional corrugator cutter.

FIG. 8 is a vertical sectional side view showing a blade mounting device for a conventional corrugator cutter.

[Explanation of symbols]

 1A, 1B Cylinder 2A, 2B Outer circumference 3A, 3B Projection 5A, 5B Groove 6A, 6B Blade height adjusting bar 7,15 Bolt hole 8 Adjusting screw 9 Screw hole 11A, 11B Blade 12A, 12B Blade fixing clamp bar 13 Bolt 17 Tool insertion hole 18A, 18B Cylinder screw hole 19 Corrugator cutter blade attachment device

Claims (2)

[Claims] 1. A tool mounting device for a corrugator cutter for cutting a corrugated cardboard sheet, wherein a pair of cylinders are arranged side by side, and a blade is helically mounted on each of the outer circumferences of the cylinders. A blade mounting portion provided with a groove having one side surface of the groove being an inclined surface, and an adjusting screw fitted at a lower portion of the groove and screwed at a predetermined interval can be slid up and down. With the blade height adjusting bar having the rear end of the blade mounted on one side opposite to the inclined surface of the groove, the upper part of the groove is slidably fitted vertically, and one side is the groove. Abutting the inclined surface of the blade, the other side abutting the side surface of the blade,
A blade fixing clamp bar having a blade fixing hole penetrating at a predetermined interval, and a fitting tightening means which is inserted into the blade fixing hole of the blade fixing clamp bar and has a tip fitted to the cylinder. And a tool fixing device for a corrugator cutter, characterized in that the tool fixing clamp bar is tightened by tightening the fitting tightening means, and the tool is fixed to the cylinder. 2. The blade of a corrugator cutter according to claim 1, wherein the blade fixing clamp bar has a tool insertion hole for operating the adjustment screw, which is provided between the adjacent blade fixing holes. Mounting device.