JPS5823217B2 - Flute change method for single-sided corrugated board in corrugated board manufacturing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a flute change method for single-sided corrugated board in the manufacture of corrugated board.

Conventionally, in the flute change of single-sided corrugated cardboard during the production of double-sided corrugated cardboard, for example, the single-sided corrugated cardboard of tier A, which is being supplied from the crew machine to the double facer, is cut when it exits the glue machine, and at the same time, it is passed through another glue machine. By the way, this was done by inserting the tip of the single-sided corrugated cardboard of tier B, which was waiting, into the double facer.

Therefore, until the flute change is completed, there is a manufacturing disadvantage in that the flow of the process after the double facer is stopped or the flow speed is drastically reduced. It was dangerous for the worker to manually insert the double facer between the heating plate at the inlet of the double facer and the cotton belt.

Furthermore, the stoppage of the flow of the above process or the drastic reduction in its speed may be caused by overdrying or warping of the cardboard, which is caused by the cardboard sent to the double facer being retained in the hot platen for longer than the normal retention time. There were also disadvantages.

An object of the present invention is to enable the lamination speed of single-sided corrugated cardboard to be carried out at a high and constant speed without stopping or decreasing by changing the flute of single-sided corrugated cardboard in the production of single-sided corrugated cardboard. This invention provides a method for changing the flute of cardboard.

Another object of the present invention is to provide a method for changing the flute of single-sided corrugated cardboard in corrugated board manufacturing, which allows workers to work safely when changing the flute of single-sided corrugated cardboard.

Further objects of the present invention will become apparent from the following description and the accompanying drawings.

In accordance with the above object, the present invention bridges the flute change of single-sided corrugated board during the production of double-sided corrugated board (including a multi-stage bridge in addition to the conventional bridge).

), and the single-sided corrugated cardboard supplied to the double facer can be temporarily stored on the bridge.

The temporary reservoir of single-sided corrugated cardboard is formed as follows.

On the bridge, the speed at which the single-sided corrugated board is fed out to the double facer is faster than the speed at which it is fed out from the single facer! If the feeding speed of the single-sided corrugated cardboard is increased, the single-sided corrugated cardboard will be accumulated on the bridge by the speed difference.

This reservoir should be large enough to allow paper cutting and splicing for flute change without reducing the feeding speed of the single-sided corrugated cardboard sent to the double facer. The feeding speed of the single-sided corrugated cardboard sent to the bridge may be made the same as the feeding speed of the single-sided corrugated cardboard sent from the bridge to the double facer, and if more than the required amount has accumulated, the feeding speed may be lowered from the feeding speed. .

The method of the invention will be explained in detail below using the example of the apparatus shown in FIGS. 1 and 2.

The example of the device shown in FIG. 1 includes a bridge 8 consisting of a lower bridge portion 81 and an upper bridge portion 82, a first conveyance device 1, a second conveyance device 3, and a first guide device 2 provided in the lower bridge portion 81, respectively. , second guide device 4 and second buffer device 7
, the third conveying device 5 and the first cross provided on the upper bridge portion 82, respectively.

It consists of a fan device 6, a guide device 100, an ear alignment device 101, and a preheater device 102.

The first conveying device 1 carries the single-sided corrugated cardboard A from the first single facer S1 to the lower bridge portion 81 of the bridge 8 by sandwiching it in a sandwich-like manner.

It consists of a pair of belt-type transfer conveyors 11 and 11 that can be moved.

The first guide device 2 moves from the first conveyor device 1 to the lower bridge portion 8.
A guide roll 21 and a long belt type guide the single-sided corrugated cardboard A carried up to the third transport device 5.

and a transfer conveyor 22.

The second conveying device 3 is configured to sandwich the single-sided corrugated cardboard B from the second single facer S2, which can produce a single-sided corrugated cardboard B different from the specifications of the single-sided corrugated cardboard N, in a sandwich-like manner, and transport it to the lower bridge section 81. A pair of belt-type transfer conveyors 31 and 31 that can be moved
Consisting of

The second guide device 4 connects the second conveyor device 3 to the lower bridge portion 8.
It consists of a guide roll 41 that guides the single-sided corrugated cardboard B that has been carried up to the third transport device 5.

The third conveyance device 5 is the first guide device 2 or the second guide device 4.
It consists of a pair of belt-type transfer conveyors 51 and 51 that can sandwich the single-sided corrugated cardboard A or B guided from the opposite sides in a sandwich-like manner and carry it up to the upper bridge part 82.

The first buffer device 6 is a long belt-type transfer conveyor 61 for temporarily storing single-sided corrugated cardboard N or B carried up from the third conveying device 5 to the upper bridge portion 82 in the upper bridge portion 82. Consisting of

The second buffer device 7 includes a long belt-type transfer conveyor 71 for temporarily storing single-sided corrugated cardboard B carried up from the second conveying device 3 to the lower bridge portion 81 in the lower bridge portion 81. It is used in the production of double-sided corrugated board.

The guide device 100 includes a guide roll 1001 and a guide plate 1002 for feeding the single-sided corrugated cardboard N or B on the first buffer device 6 to the edge aligning device 101, and a guide device 100 for sending the single-sided corrugated cardboard B on the second buffer device 7 to the edge aligning device 101. It consists of a guide roll 1003 for feeding, and an ear alignment device 10
1 consists of a guide roll 1011 for aligning both sides of the single-sided corrugated cardboard A or B that has passed through the guide device 100 or the single-sided corrugated cardboard B that has passed through the second buffer device 7, and a movable roll with both side plates 1012, and a preheater device 102. is a single-sided cardboard A that has passed through the edge aligning device 101
Or a guide roll 1021 and a heater drum 1022 that preheat B and send it to the next glue machine (not shown).
It consists of

The example of the device shown in FIG.
The guide device 2, the second guide device 4B, the fourth conveyor device 3B, the second buffer device 7, the third conveyor device 5, the first buffer device 6, the guide device 100, and the ear alignment provided in the upper bridge portion 82, respectively. Device 101 and preheater device 10
Consists of 2.

The first conveyance device 1, the first guide device 2, the second conveyance device 3, the third conveyance device 5, the first buffer device 6, the second buffer device 7, the guide device 100, the edge alignment device 101, and the preheater device 102, Since this device is the same as the device example shown in FIG. 1, its explanation will be omitted.

The second guide device 4B is configured to temporarily store single-sided corrugated cardboard B carried up from the second conveyance device 3 to the lower bridge section 81 using a guide roll 41B that guides it to the third conveyance device 5 and the lower bridge 81. It consists of a long belt type transfer conveyor 42.

The fourth conveyance device 3B includes a pair of belt-type transfer conveyors 31B that can sandwich the one-sided corrugated cardboard B from the second single facer S2 in a Zandwich shape so as to convey it to the second buffer device 7; 31B
Consisting of

According to the above device example, the single-sided corrugated cardboard A is now transferred from the first single facer S1 to the first guide device 2 (which may not be used .

) and a first buffer device 6 via a third conveying device 5 whose transfer speed is synchronized with or slightly faster than that of the first conveying device 1.
When carried up, the single-sided cardboard boxes A continuously form a wave shape and are temporarily accumulated on the transfer conveyor 61, which is moving at a speed much slower than the transfer speed of the third transfer device 5, and are sequentially The glue is sent from the glue machine to the double facer via the guide device 100, the edge alignment device 101, and the preheater device 102.

When this single-sided corrugated cardboard A is flute-changed into a single-sided corrugated cardboard B, it is performed as follows.

It is carried up from the second single facer S2 by a second conveying device 3 whose transfer speed is the same as that of the second single facer S2 or slightly faster than that of the second single facer S2, and the second guide device 4 (which may not be used).

) or 4B (may not be used).

), the operation of the first single facer S1, the first conveying device 1, and the third conveying device 5 is stopped. At low speed or at a stopped speed, the single-sided corrugated cardboard A is cut at the reservoir on the transfer conveyor 61 or in front of it, for example at the lower bridge section 81, and the tip of the single-sided corrugated cardboard B is joined to the cut end with adhesive tape or the like, and then the second This is carried out by operating the single phaser S2, the second transport device 3, and the third transport device 5 at predetermined operating speeds.

In addition, when changing the flute between single-sided corrugated cardboard 8 and single-sided corrugated cardboard B at the upper bridge section 82, the first single facer S1, the first conveying device 1, and the third conveying device 5 are set at low speed or stopped, and the single-sided corrugated cardboard A is changed, for example. Cutting is performed at the lower bridge section 81, and when the third conveying device 5 is stopped at the time of cutting, this device 5 is operated again to transfer the cut end of the single-sided corrugated cardboard A onto the first buffer device 6 of the upper bridge section 82. Then, the second single facer S2 and the second conveying device 3 are operated at low speed, and the tip of the single-sided corrugated cardboard B, which had been stopped at the lower bridge section 81, is transferred to the third conveying device 5 and transferred to the second single facer S2 and the second conveying device 3 at low speed. This is carried out by transporting the single-sided corrugated cardboard A onto a buffering device 6, where the cut end of the single-sided corrugated cardboard A and the tip of the single-sided corrugated cardboard B are joined together using an adhesive tape or the like.

At this time, the first single phaser S1 and the first transport device 1
When the machine is running at low speed, it stops after cutting the single-sided cardboard A.

In addition, after joining, the second single facer S2,
The second transport device 3 and the third transport device 5 are operated at a predetermined speed.

When changing the flute from single-sided corrugated cardboard B to single-sided corrugated cardboard 8, the same operation as in the above case is performed, so a description thereof will be omitted.

When changing the flute of single-sided cardboard as described above,
As shown in FIG. 2, the transfer conveyor 22 in the first guide device 2 or the transfer conveyor 42 in the second guide device 4B
It is convenient to temporarily store the single-sided corrugated cardboard A or B above and then perform paper cutting and paper splicing.

That is, to explain the case where a flute change is made from single-sided corrugated cardboard A to single-sided corrugated cardboard B, the single-sided corrugated cardboard N is transferred from the first single facer S1 to the transfer conveyor of the first guiding device 2 by the first conveying device 1. 22, but the transfer speed of the transfer conveyor 22 is set to the first
When the conveying speed is much lower than the lifting speed of the conveying device 1, the single-sided cardboard N forms a first pool on the transfer conveyor 22, and then the transition speed of the first buffering device 6 is reduced to the lifting speed of the third conveying device 5. At a much slower rate, the single-sided cardboard A forms a second pool on the transfer conveyor 61.

Therefore, the single-sided cardboard A that was cut at or before the first pool can be spliced to the tip of the single-sided cardboard B that was waiting before the cut end reaches the second pool or just before it. Therefore, the speed at which the single-sided corrugated cardboard is fed to the double facer and the speed at which the single-sided corrugated cardboard is fed from the single facer during the flute change can both remain in high-speed operation.

According to the present invention, since the flute change of single-sided corrugated cardboard is performed using the storage of single-sided corrugated cardboard on the first buffer device, it is not necessary to reduce the speed of the single-sided corrugated cardboard sent from the second buffer device to the next process. Without,
High-speed production of double-sided corrugated cardboard becomes possible.

[Brief explanation of drawings]

FIG. 1 is an overall schematic explanatory diagram showing an example of an apparatus for practicing the method of the present invention, and FIG. 2 is an overall schematic explanatory diagram showing another example of the apparatus for implementing the method of the present invention. Sl...First single phaser, S2...
...Second single facer, A, B...Single-sided cardboard, 6...First buffer device, 7...
...Second buffer device, 8...Bridge.

Claims (1)

[Claims] 1. After being fed into the bridge from the single facer and forming a reservoir on the bridge, the single-sided corrugated board being fed to the double facer is cut at or before the reservoir, and the cut end is . A flute change method for single-sided corrugated cardboard in corrugated board manufacturing, characterized in that the tips of single-sided corrugated cardboard fed into the bridge from another single facer are spliced together. 2 It is fed from the single facer to the first buffer device on the bridge to form the first reservoir, and further fed to the second buffer device on the bridge to form the second reservoir, and then the double facer The single-sided corrugated cardboard being sent out to the bridge is cut at or before the first pool, and the tip of the single-sided corrugated cardboard fed to the bridge from another single facer is attached to the cut end of the single-sided corrugated cardboard sent to the bridge in the second round. A flute change method for single-sided corrugated cardboard in corrugated board manufacturing, characterized by splicing at or before the sump.