JPS5927707B2 - Method and device for removing defective portions of single-sided corrugated cardboard during supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for removing defects in single-sided corrugated cardboard during feeding.

The single-sided corrugated board fed from the single facer onto the bridge has problems such as poor splicing of the core paper or liner paper during the papermaking stage, poor gluing of the core paper and liner paper during the single facer stage, and poor bonding. , there are defective parts due to paper splicing defects, etc., and these defective parts are
If paper is fed to a double facer, serious problems such as paper breakage and jam-ups will occur, resulting in product loss and a significant drop in productivity.

For this reason, when a defective part is found in the single-sided corrugated cardboard that has conventionally been fed onto the bridge from the single facer, the operation of the double facer and the feeding from the single facer are interrupted or slowed down each time. In the meantime, the defective part was cut off, and the defective part was manually removed from the bridge, an inefficient and dangerous operation.

The object of the present invention is to quickly remove defective portions of single-sided corrugated cardboard fed to the double facer on a bridge without interrupting or slowing down the operation of the double facer. The object of the present invention is to provide a method and apparatus for doing so.

Another object of the present invention is to provide a method and apparatus for removing defective portions of single-sided corrugated cardboard on a bridge while safely and with fewer workers. be.

Furthermore, other objects, features and advantages of the present invention will become apparent from the following detailed description with reference to the accompanying drawings.

In accordance with the above object, the present invention is configured such that the single-sided corrugated board fed from the single facer to the bridge forms a reservoir on the bridge and then is sent to the next process, and the single-sided corrugated board is placed at the starting point of the defective part in the reservoir. After removing the defective portion, the defective portion is transported outside the bridge in the opposite direction to the traveling direction of the single-sided corrugated cardboard by a transfer means, and the defective portion is removed. A method for removing defective parts during the supply of single-sided corrugated cardboard that joins cut ends, and a method attached to a stock conveyor that allows single-sided corrugated poles sent from a single facer to a bridge to be stored in a wave shape and then supplied to the next process. The apparatus comprises a transfer conveyor having an infeed end disposed near the stock conveyor and a dispensing end disposed in a direction opposite to the dispensing end of the stock conveyor, the apparatus being capable of removing defective portions of the single-sided cardboard from the stock conveyor. This invention discloses a device for removing defective portions of single-sided corrugated cardboard.

In the present invention, the device for removing defective portions of single-sided corrugated cardboard includes a transfer conveyor, but the transfer conveyor may be only a belt conveyor, or a transfer means other than the belt conveyor may be used.

Further, the transfer conveyor may be composed of a transfer means such as a belt conveyor and rolls or an endless belt provided oppositely and close to the conveyance surface on the feeding end side of the transfer means.

Hereinafter, the present invention will be illustrated and explained based on examples.

The bridge 1 is provided with a lifting conveyor 2 and a stock conveyor 3, and a defective part removing device 4 is provided above them.

The conveyor 2 consists of a pair of endless belts 21 and 22 that are close to each other so as to sandwich and transport the single-sided cardboard a.
It consists of

The conveyor 3 consists of a long belt conveyor 31 that can rotate at a transfer speed much slower than the transfer speed of the conveyor 2.

The device 4 is a transfer conveyor in which the infeed end is disposed above near the infeed end of the conveyor 3 and the outfeed end is disposed above the bridge 1 in the direction opposite to the infeed end of the conveyor 3, and includes a long belt conveyor 41. and a roll 42 provided oppositely and close to the conveying surface 411 on the feeding end side of the conveyor 41.

As shown in FIG. 2, an endless bell 42B may be provided instead of the roll 42.

Therefore, when the single-faced corrugated pole a manufactured by the single facer SA is sent by the conveyor 2 to the conveyor 3 on the bridge 1, the conveyor 3 is about 1/8 to 1
Since it rotates at a transfer speed of /12, single-sided cardboard a
After being accumulated in a wave shape on the U conveyor 3, it is sent to the next process.

When a defective portion is found in the single-sided corrugated cardboard a sent to the conveyor 3, the operating speed of the conveyor 3 is slowed down, the operation of the device 4 is started, and the starting end of the defective portion is cut at the reservoir, The cut starting end is drawn between the conveyor 41 and the roll 42 of the device 4, and the conveyor 41
The defective part is removed from the conveyor 3 and quickly sent out of the bridge 1, and when the end of the defective part reaches the end on the conveyor 3, it is cut and after the defective part is removed. The two cut ends of the single-sided corrugated cardboard are joined together, the operating speed of the conveyor 3 is restored again, and the operation of the device 4 is stopped after the defective portion is removed from the bridge.

Note that it is desirable that the operating speed of the conveyor 2 is reduced to some extent at the same time as the speed of the conveyor 3 is reduced.

According to the present invention, defective portions of the single-sided corrugated cardboard are quickly removed, and during this time, the sending to the next process is performed using the reservoir, so there is no need to interrupt or slow down the operation of the double facer, and furthermore, Removal of defective parts is a simple matter of guiding the cutting start end to the transfer conveyor, so only one worker is needed instead of several workers in the past.
Furthermore, since there is no need for manual work to fall from the bridge, dangerous work can be avoided.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a part of an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a schematic side view showing another embodiment of the defective part removing apparatus of the present invention. 1...Bridge, 3...Stock conveyor, 4...Defect part removal device, 41...
...Belt conveyor, 411... Conveyance surface same as above,
42...Roll, 42B...Endless belt.

Claims (1)

[Scope of Claims] 1. A single-sided corrugated cardboard sent from a single facer to a bridge forms a reservoir on the bridge, and then is sent to the next process, and the single-sided corrugated cardboard is placed in the part where the starting end of the defective part is removed. After removing the defective portion, the defective portion is transported outside the bridge in the opposite direction to the traveling direction of the single-sided corrugated cardboard by a transfer means, and the defective portion is removed. A method for removing defective parts during supply of single-sided corrugated cardboard, characterized by joining cut ends together. 2 A device attached to a stock conveyor that allows single-sided corrugated cardboard sent from a single facer to a bridge to be stored in a wave shape and then supplied to the next process, the feeding end of which is placed near the stock conveyor, A device for removing defective portions of single-sided corrugated cardboard, comprising a transfer conveyor whose end is arranged in a direction opposite to the sending end of the stock conveyor, and capable of removing defective portions of the single-sided corrugated cardboard from the stock conveyor. 3. The device for removing defective portions of single-sided corrugated cardboard according to claim 2, wherein the transfer conveyor is a belt conveyor. 4. The device for removing defective portions of single-sided corrugated cardboard according to claim 2, wherein the transfer conveyor comprises a belt conveyor and a roll provided oppositely and close to the conveyance surface on the feeding end side of the conveyor. 5. The device for removing defective portions of single-sided corrugated cardboard according to claim 2, wherein the transfer conveyor comprises a belt conveyor and an endless belt provided oppositely and close to the conveyance surface on the feeding end side of the conveyor.