JPH064305B2 - Equipment for forming slits on the front and back of corrugated paper - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for forming slits on the front and back surfaces of corrugated paper.

(Conventional secret technique) For example, in a door plate, a desk top plate, or various furniture panels, a honeycomb corrugated cardboard core material C as shown in FIG. 5 is used for the purpose of reinforcing the panel surface direction and reducing the weight. Interior is being done in the panel material.

The applicant has previously made a corrugated cardboard sheet 10 as shown in FIGS.
Slits (also referred to as cuts or half cuts) 16 and 17 at predetermined intervals on the front board 11 and the back board 12
It has been proposed that it is advantageous to form In the figure, reference numeral 13 represents a corrugated board joined between the front board 11 and the back board 12.

However, when forming the slits 16 or 17, when a conventional device for processing while corrugating a corrugated cardboard as a material is sandwiched between the rotary cutter and the feed roller is used, when the corrugated cardboard is fed between the corrugated cardboard and the feed roller. There was a problem that there was a frictional resistance to the cutter and there was a gap with the cutting speed of the cutter, the slit formation was insufficient, and not only the surface of the corrugated paper but also both sides of the corrugated board were cut. .

In addition, as shown in the figure, the front and back coverboards 1 of the corrugated paperboard 10
There was also no device for simultaneously forming slits 16 and 17 at predetermined intervals on the 1 and the backboard 12.

(Problems to be Solved by the Invention) In view of the above situation, the present invention can surely form slits only on the front board and the back board of corrugated paper, and can simultaneously form the front and back slits. It is intended to provide a new slit forming device.

(Means for Solving the Problems) That is, according to the present invention, the front side paperboard of corrugated paperboard in which corrugated paperboard is joined between the front paperboard and the backboard paper is formed with front side slits at predetermined intervals, and the corrugated paperboard is formed. A device for forming backside slits at a predetermined interval also on the backboard of paper, comprising a pair of upper and lower feeding rollers for sandwiching the corrugated cardboard paper and feeding it to the machine base. Front side cutters that form front side slits in contact with the front board of the corrugated paper are arranged side by side at predetermined intervals on the front side of the corrugated paper, and the back side of the corrugated paper corresponding to the front board contact position of the cutter. The backside free rollers that rotate freely in contact with the backboard of the corrugated cardboard are provided on the respective sides, and on the front side of the corrugated paper in front of the front side cutter in the machine base. The front side free rollers that freely rotate in contact with the front board of the corrugated board are arranged in parallel at predetermined intervals, and the back side of the corrugated board corresponding to the front board side contact position of each front side free roller is The back side cutters that contact the back board of the corrugated paper and form the back side slits are respectively arranged. Further, in front of the back side cutter, the corrugated paper is sandwiched and sent out to the outside of the machine base. The present invention relates to an apparatus for forming slits on the front and back surfaces of corrugated paperboard, which is equipped with a delivery roller.

(Embodiment) An embodiment will be described below with reference to the accompanying drawings. FIG. 1 is an overall side view showing an example of a slit forming device of the present invention by a partially cutaway section.

As shown in FIG. 4, this device includes surface slits 16 at predetermined intervals on the front board 11 of a corrugated paper board 10 in which a corrugated board 13 is joined between a front board 11 and a back board 12.
And the backside paperboard 12 of corrugated cardboard, which also forms backside slits 17 at predetermined intervals.

In this specification, the terms “front” and “back” are used for the corrugated cardboard 10 for convenience of description, but this means “one side” or “the other side” of the corrugated cardboard.

As shown in the overall view of FIG. 1, this apparatus is provided with a pair of upper and lower feeding rollers 23, 23 for sandwiching the corrugated cardboard paper 10 at the front part of the machine base 20 and feeding it to the machine base. A front side cutter 30 forming a front side slit 16 and a back side free roller 40 are arranged on a front board 11 of the paper 10, and a back side cutter 50 forming a back side slit 17 on a back board 12 of the corrugated cardboard 10 and A front side free roller 45 is disposed, and a pair of upper and lower feed rollers 26, 26 for further sandwiching the corrugated paperboard 10 and feeding it out of the machine base.
Is provided. Incidentally, reference numeral 21 represents a feeding table for the corrugated paperboard 10.

As shown in the figure, the corrugated paper 10 having a predetermined size, which is a material to be processed, is sequentially fed into the machine base 20 one by one from the sending table 21 by hand or by an automatic carry-in machine.

As shown in the enlarged view of the main part of FIG. 2, a pair of upper and lower feed rollers 23, 23 for sandwiching the corrugated cardboard 10 and feeding it into the machine base 20 are provided at the entrance of the corrugated board 10. Are transferred at a predetermined speed.

Front side cutters 30 that contact the front board 11 of the corrugated paperboard 10 and form the front side slits 16 are arranged in parallel at regular intervals in front of the feed rollers 23, 23, and the front board of each of the cutters 30. 11 on the back side of the corrugated board corresponding to the 11 contact position, the back side free rollers 40 contacting the back board 12 of the corrugated board are arranged respectively. The front side cutters 30 are respectively provided with brackets 31 as shown in FIG. Is held at a constant angle by a mounting arm 33 fixed to the cutter side sprocket 32
Drive side sprocket 3 in which is connected to the drive shaft 34
5 is connected via an endless chain 36, and is rotated at a predetermined speed by a driving device (not shown). Reference numeral 59
Is the axis of rotation.

The bracket 31 is fixed to the machine base 20 by a main shaft 37, and can be adjusted to its height position by an up-down adjusting mechanism 38 including, for example, screws. Accordingly, the position of the cutter 30 can be adjusted freely.

On the other hand, as is well understood from FIG. 3, on the back side of the corrugated board corresponding to the front board 11 contact position of the front side cutter 30, the back side free to rotate in contact with the corrugated board 12 is free. Rollers 40 are provided respectively.

The free roller 40 is configured to be freely rotatable by mounting a bearing or the like on the shaft 41, for example.

Further, on the front surface side of the corrugated paper 10 in front of the front side cutter 30 in the machine base 20, front surface side free rollers 45 which freely rotate in contact with the front board 11 of the corrugated board are arranged in parallel at a predetermined interval, and Front board 1 of each front side free roller 45
On the back surface side of the corrugated cardboard paper corresponding to one contact position, there are provided back surface side cutters 50 which contact the back board 12 of the corrugated paper board and form the back surface side slits 17, respectively.

The front side free roller 45 and the back side cutter 50
In the above, the front surface side cutter 30 and the back surface side free roller 40 described above are arranged symmetrically (upside down). Therefore, since the configuration is also the same, the description of the reference numerals will be replaced with the description of the configuration.

That is, in FIGS. 2 and 3, the front side free roller 45 is, for example, a bearing mounted on the shaft 46 so as to be freely rotatable.

Regarding the back side cutter 50, reference numeral 51 is a bracket, 52 is a cutter side sprocket, 53 is a mounting arm,
54 is a drive shaft, 55 is a drive side sprocket, 56
Is an endless chain, 57 is a main shaft, 58 is an up-down adjusting mechanism, and 59 is a rotating shaft, and the structure thereof is the same as that of the front side cutter 40.

Further, in front of the rear side cutter 50, as shown in FIG. 1, the corrugated paperboard 1 having slits formed therein.
A pair of upper and lower feed rollers 26, 26 for sandwiching 0 and feeding it to the outside of the machine base are provided.

As can be seen from FIG. 3, each front side cutter 3
0 and each back side cutter 50 are respectively arranged via a single main shaft 37, 58, and the drive shafts 34, 54 are also linked by a single drive mechanism which is shown as a single unit. Is preferred. Similarly, it is desirable that the back-side free roller 40 and the front-side free roller 45 are also configured by the single shafts 41 and 46, respectively. By arranging the front and back side cutters and free rollers on a single axis in this way, the mechanism is simplified and the slit spacing and number can be set and changed easily and easily. There is a merit that can be done.

(Operation) In the slit forming apparatus of the present invention configured as described above, when the corrugated paperboard 10 fed into the machine base 20 by the feeding roller 23 advances at a predetermined speed, the front side cutter 30 arranged in front of the corrugated paperboard 30. Contacts the front board 11 of the corrugated cardboard 10 and cuts by the rotational force to advance the corrugated board 10 while forming the front side slit 16.

At this time, the free roller 40 arranged so as to freely rotate while contacting the back plate surface 12 on the back surface side of the corrugated paper opposite to the front surface cutter 30 transmits the cutting force of the front surface cutter 30 to the front board 11 sufficiently. Hold the corrugated cardboard 10 like
Since it is in a freely rotatable state, no frictional resistance is generated between the corrugated paperboard 10 and the corrugated paperboard 10, and slippage or the like is not generated at all.
The slit 16 is surely formed only on the front paperboard on which the slit is to be formed corresponding to the cutting speed of 0, and the slit 16 is moved forward.

Similarly, the front side free roller 45 and the back side cutter 50 arranged in front of the front side cutter 30 perform slit processing on the back board 12.

After that, the corrugated paperboard 10 is sequentially sent out of the machine base 20 by the delivery rollers 26, 26, and the corrugated paperboard 10 having slits 16, 17 formed at predetermined intervals on both upper and lower surfaces is obtained as shown in FIG. To be

The corrugated cardboard paper 10 with slits is then further cut, for example, along the line indicated by the alternate long and short dash line in FIG. 4, and a predetermined portion is attached to complete the honeycomb-shaped corrugated fiberboard core material C as shown in FIG. It will be.

(Effect) As shown and described above, according to the present invention, it is possible to surely form the slits only on the front board or the back board of the corrugated cardboard, and it is possible to simultaneously form the front and back slits. The machining work has become extremely easy and the production efficiency can be greatly improved.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention with a partial cutaway section, FIG. 2 is an enlarged sectional view of an essential part of FIG. 1, and FIG. 3 is an enlarged front view of an essential part of the same. FIG. 5 is a perspective view of corrugated cardboard paper having slits formed therein, FIG. 5 is a perspective view of a honeycomb corrugated cardboard core material, and FIG. 6 is a partially enlarged view thereof. 10 ... Cardboard, 11 ... Frontboard, 12 ... Backboard, 13 ...
Corrugated paperboard, 16, 17 ... Slit, 20 ... Machine stand, 23 ... Infeed roller, 26 ... Outfeed roller, 30 ... Front side cutter, 40 ... Back side free roller, 45 ... Front side free roller, 50 ... Back side cutter.

Claims (1)

[Claims] 1. A front side paperboard of corrugated paperboard in which corrugated paperboard is joined between a frontboard and a backboard paper is formed with front surface slits at a predetermined interval, and the backboard paper of the corrugated paperboard is also provided at a predetermined interval. A device for forming a slit on the back side, which is provided with a pair of upper and lower feeding rollers that sandwich the corrugated cardboard paper and feed it to a machine base. Front side cutters that form front side slits in contact with the front board of the paper are juxtaposed at predetermined intervals, and the back board of the corrugated paper is on the back side of the corrugated board corresponding to the front board contact position of each cutter. Each of the back side free rollers that freely rotates in contact with the front side of the corrugated paper is provided on the front side of the corrugated board in front of the front side cutter in the machine base and is in contact with the front board of the corrugated board. Rolling front side free rollers are arranged in parallel at a predetermined interval, and the back side of the corrugated board is in contact with the back side of the corrugated board on the back side of the corrugated board corresponding to the front board side contact position of each front side free roller. And a pair of upper and lower feed rollers for sandwiching the corrugated cardboard paper and feeding it out of the machine base in front of the back side cutter. A device that forms slits on the front and back of paper.