JPH071611A - Cutting method for corrugated fiberboard - Google Patents

Abstract

PURPOSE:To stabilize a cut surface by providing supporting rollers at upper and lower stages of one side of a base, and providing a rotary cutter at the upper stage the other side and a supporting roller rotating in the same direction as that of the cutter at a speed of 1/2 or less of that of the cutter and circumferentially formed with engaging grooves corresponding to the cutter at the lower stage. CONSTITUTION:A corrugated fiberboard 18 is held between feed rollers 14 provided at upper and lower stages of one side of a base 12, and the rollers 14 are rotated to convey the fiberboard 18 to the other side of the base 12. Then, the conveyed fiberboard 18 is held by a rotary cutter 20 of the upper stage of the other side of the base 12 and a supporting roller 26 of the lower stage, and cut by the cutter 20. In this case, the roller 26 of the lower stage of the base 12 is rotated in the same direction as that of the cutter 20 at a speed of 1/2 or less of that of the cutter 20 to oppositely operate to the fiberboard feeding operation of the cutter 20 to suppress the conveying speed of the conveyed fiberboard 18. Further, the cutter is engaged with an engaging groove of the roller 26 thereby to control pressing of the fiberboard 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated board, and more particularly, to a cutting method effective for cutting a sheet.

[0002]

2. Description of the Related Art Generally, a corrugated board cutting process is known in which corrugated board (single-sided corrugated board / double-sided corrugated board / three-layer corrugated board) manufactured by a corrugator machine is cut by a pair of upper and lower rotary blades.

Further, as a method of cutting with a single rotary blade, there is a method described in JP-A-5-38771.

In this example, a rotary blade is provided on the upper side, and a receiving plate having a long groove is provided on the lower side at a position where the rotary blade passes,
The corrugated cardboard carried on the receiving plate is cut by a rotary blade that rotates at a speed twice or more the cardboard carrying speed.

[0005]

Conventionally, as described above, in the former case, since a pair of rotary blades are engaged and cut, the corrugated surface of the corrugated cardboard is deformed (crushed, crow's foot marks are generated).
It is easy to do, the product value is lowered, and it is difficult to print on the deformed cut surface when printing.

Further, since there is no mechanism for controlling the transportation speed of the corrugated board, the corrugated board after cutting is easily ejected from the device,
There has been a problem that the corrugated board is easily damaged by being dropped on the floor.

Further, in the latter, since there is no means for supporting the conveyed corrugated board, there is a problem that the corrugated board is apt to laterally shift during cutting and it is difficult to cut straightly.

Further, as in the former case, since there is no mechanism for controlling the transportation speed of the corrugated board, there is a problem that the corrugated board is easily damaged.

In view of such drawbacks, it is an object of the present invention to provide a corrugated board cutting method capable of improving the product value without deforming the corrugated board cutting surface.

[0010]

According to the present invention, a corrugated cardboard is sandwiched between two upper and lower delivery rollers provided on one side of a base and conveyed to the other side of the base, and the cardboard is provided on the other side of the base. By the support roller that rotates in the same direction as the rotary blade at a speed less than 1/2 of that of the rotary blade and the rotary blade provided on the other lower stage of the base, and has a fitting groove corresponding to the rotary blade provided around the rotary blade. It is characterized in that the corrugated cardboard that has been conveyed is sandwiched and the corrugated cardboard is cut by a rotary blade.

[0011]

The function of the present invention will be described.

When the corrugated board is cut by the corrugated board cutting method according to the present invention, the support roller in the lower stage of the base is rotated in the same direction as the rotary blade at a speed less than 1/2 of the rotary blade, so that the support roller rotates. It acts in the opposite direction of the cardboard feeding action of the blade, can suppress (decelerate) the transportation speed of the corrugated cardboard that has been transported, prevent the corrugated cardboard from jumping out after cutting, and stabilize the cutting surface. You can

Further, since the support roller is provided with a fitting groove corresponding to the rotary blade, the rotary blade is fitted into the fitting groove of the support roller to support the corrugated board being conveyed, thereby rotating the corrugated board. Since the cutting is not performed by the meshing of the blade and the supporting roller but by the rotary blade on the upper stage, the corrugated surface of the corrugated board is not deformed without forcibly pressing the corrugated board.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting device used in a corrugated board cutting method according to the present invention has the following structure, as shown in FIGS.

The feed rollers 14 are provided on one of the bases 12 in two stages, upper and lower. Both delivery rollers 14 of this embodiment
Are respectively attached to the drive shafts 16, rotate the upper feed roller 14 in the clockwise direction, rotate the lower feed roller 14 in the counterclockwise direction, and turn the corrugated board 18 described later into the base 12.
To the other side.

Further, it is desirable that the interval between the upper and lower delivery rollers 14 is slightly smaller than the thickness of the cardboard 18 so that the cardboard 18 can be sandwiched.

A rotary blade 20 is provided on the other upper stage of the base 12. The rotary blade 20 of this embodiment is attached to a drive shaft 22 and is rotated clockwise.

On the other lower stage of the base 12, one of the rotary blades 20
A support roller 26 is provided that rotates in the same direction as the rotary blade 20 at a speed of 2 or less and that has a fitting groove 24 corresponding to the rotary blade 20 provided around it. The support roller 26 of this embodiment is attached to a drive shaft 28 and is rotated clockwise like the rotary blade 20.

Further, in this embodiment, the rotation speed of the rotary blade 20 is 300 times / minute and the rotation speed of the support roller 26 is 150 times / minute, but the rotation speed of the support roller 26 is strictly the same as that of the rotary blade 20. Even if it is not less than 1/2 of the rotation speed,
It is sufficient that the speed is about 1/2 or less so that the ejection of the cardboard 18 from the base 12 can be controlled.

In the figure, 30 is a guide plate, 32 is a fixture,
Arrow R indicates the direction of rotation.

FIG. 3 shows a corrugated cardboard 18 used in this embodiment. This corrugated cardboard 18 is called a double-sided corrugated cardboard, and its structure is such that a core 36 is provided between two upper and lower corrugated cardboard base papers 34. They are sandwiched, and Y in the figure indicates the cutting direction.

When the corrugated cardboard 18 is cut by using this apparatus, first, the corrugated cardboard 18 is sandwiched between the delivery rollers 14 provided on the upper and lower two stages of the base 12.

Next, the corrugated cardboard 18 sandwiched by the rotation of the delivery roller 14 is conveyed to the other side of the base 12.

Next, the other upper rotary blade 20 of the base 12
The corrugated cardboard 18 conveyed is nipped by the lower support rollers 26, and the corrugated cardboard 18 is cut by the rotary blade 20. At this time, the lower support roller 26 of the base 12 is rotated by the rotary blade 2 at a speed less than 1/2 of the rotary blade 20.
By rotating the cardboard 18 in the same direction as 0, the rotating blade 20 acts in the opposite direction to the cardboard feeding action, and the transport speed of the transported cardboard 18 is suppressed.

Further, by fitting the rotary blade 20 into the fitting groove 24 of the support roller 26, the pressing of the corrugated board 18 is controlled.

In the corrugated board cutting method according to the present invention, the rotary blade 20 and the support roller 26 axially attached to the drive shafts 22 and 28 are fixed to at least one position, and the rotary blade 20 and the support roller 26 are fixed. Each axis 22, 28
It can be used for cutting various types of corrugated cardboard by moving along with, and can be used for cutting various types of corrugated cardboard by increasing the number of rotary blades 20 and supporting rollers 26.

[0027]

According to the corrugated board cutting method of the present invention, since the lower support roller of the base is rotated in the same direction as the rotary blade at a speed of 1/2 or less of the rotary blade, the support roller is rotated by the rotary blade. It acts in the opposite manner to the corrugated cardboard feeding action described above, and it is possible to suppress the transport speed of the corrugated cardboard that has been transported, prevent the corrugated cardboard from jumping out, and stabilize the cutting surface.

Further, since the supporting roller is provided with the fitting groove corresponding to the rotary blade, the rotary blade is fitted into the fitting groove of the supporting roller to support the corrugated board conveyed to rotate the corrugated board. Since the cutting is not performed by the meshing of the blade and the supporting roller but by the rotary blade on the upper stage, the corrugated surface of the corrugated board is not deformed without forcibly pressing the corrugated board.

[Brief description of drawings]

FIG. 1 is a front view showing a corrugated board cutting device according to the present invention.

2 is an enlarged cross-sectional view taken along line XX of FIG.

FIG. 3 is a perspective view of cardboard.

[Explanation of symbols]

 12 Base 14 Delivery Roller 18 Corrugated Cardboard 20 Rotating Blade 24 Fitting Groove 26 Support Roller

Claims (1)

[Claims] 1. A corrugated cardboard (18) is sandwiched between two upper and lower delivery rollers (14) provided on one side of the base (12) to support the base (1).
2) of the rotary blade (20) provided on the other upper stage of the base (12) and half or less of the rotary blade (20) provided on the other lower stage of the base (12). Corrugated cardboard that has been conveyed by a support roller (26) that rotates in the same direction as the rotary blade (20) at the speed of, and has a fitting groove (24) corresponding to the rotary blade (20).
While holding (18), corrugated board (18) with rotary blade (20)
A method for cutting corrugated cardboard, which comprises cutting.