JPS63134458A - Conveyor for continuous sheet stacking - Google Patents

Abstract

PURPOSE:To make the promotion of continuation for sheet stacking positively executable as well as to aim at prevention against the lowering of yield, by making both low-speed and ejector conveyors of a conveyor so as to get rid of a repetition of start-stop of a cutter with good use of a combination of a motor and a clutch. CONSTITUTION:When sheets on a stacking block 35 come to the setting quantity, a first clutch 29 is opened, and drive from a first low-speed conveyor 28 to a second low-speed conveyor 30 is cut, but the conveyor 30 is driven by an ejector conveyor 32 with connection of a second clutch 33. This drive accelerates these conveyors 32 and 30 with a motor 31, whereby these sheets on the conveyor are quickly conveyed and stacked in pile. During this while, a high-speed conveyor 25 and the low-speed conveyor 28 both are in low speed driving, but these sheets are brought to nothing from top of the conveyor while subsequent sheets are not fed to the conveyor 30, and furthermore, with confirmation of the stacking of the last sheet, the clutch 33 is opened, and the conveyor 30 is separated from the drive of the ejector conveyor 32, therefore the clutch 29 is connected and conveyors 28 and 30 go back to usual operation, a sheet presser roller 37 goes up, simultaneously the stacking block 35 goes down, changing the stacking position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conveyor device for continuous sheet stacking in a sheet cutter device, which continuously transports sheets.

[Conventional technology]

Conventional sheet cutter devices of this kind, when changing the stack of sheets on a stacking table stacked on a pallet, temporarily store the sheets stacked on the other stacking table, and then return to the original stacking table after replacing the pallet. and was implementing it.

[Problem that the invention seeks to solve]

However, with such an apparatus, there is a limit to the continuous stacking of sheets.

The reason for this is that when changing the stack of sheets on the stacking table, the gate is operated to convey the sheets to the other stacking table, and the gate is out for the above-mentioned changing time. As a result, good sheets are treated as waste paper, which is thought to be the cause of a decline in the yield of leftover sheets. Therefore, the present invention is intended to ensure continuous sheet stacking.

[Means for solving problems]

The technical means of the present invention to solve the above-mentioned problems is that in the drive conveyance and stacking of sheets, the sheet conveyance is normally carried out by a low-speed conveyor motor, and the connection between the first low-speed conveyor and the second low-speed conveyor is performed by a first clutch. When changing the sheet height, when the first clutch is released, the ejector conveyor from the ejector conveyor motor is connected to the second low-speed conveyor by the second clutch, whereby the second low-speed conveyor and the preceding sheet on the ejector conveyor are connected. is temporarily conveyed at high speed and deposited rapidly, while subsequent sheets are conveyed at low speed on the first low speed conveyor from the high speed conveyor motor and the low speed conveyor motor, and the subsequent sheets are sent to the second low speed conveyor. After confirming the final accumulation of the above-mentioned sheets, the second clutch is released and the first and second low-speed conveyors are set to a slow speed as the first clutch returns, while the sheet stack is changed. It is constructed by performing it continuously.

[For production]

The effect of this technical means is as follows.

In other words, when the conveyance device shown in FIG. 1 is implemented, good sheets are temporarily gated out to the waste paper stacking table, which reduces the yield rate of sheet production and causes problems in continuous sheet stacking. It's coming.

Therefore, by utilizing the low-speed conveyor and the protruding conveyor of the conveyance device of the present invention in good combination with the motor and clutch, the gate-out of sheet change can be prevented and the conveyor conveyance of continuous sheet piles can be ensured.

〔Example〕

The drawings will be explained below.

FIG. 1 is a side view of a conventional embodiment.

In the figure, numeral 3 denotes a cutter that cuts a web W of paper, plastic, foil, etc. into a sheet 8 of a fixed size. The cutter 3 pulls the web W with a constant tension with a press roll 2 combined with a draw roll 1 in the previous stage, and this web W
is cut into sheets and conveyed on the next conveyor. The conveyance after the cutter is driven by a high-speed conveyor motor 4, a high-speed conveyor 5, a second high-speed conveyor 6, a low-speed conveyor motor 7, a low-speed conveyor 8, an ejection conveyor motor 11, and an ejection conveyor 12.
After that, they are stacked on pallets on a stacking table 15.

The speed of the above-mentioned high-speed conveyor is increased slightly faster than the speed of the draw roll 1 in order to maintain a distance of about 100 snow between sheets. On the other hand, in a low-speed conveyor, the speed of the draw roll 1 is approximately 10 to 20 degrees slower than the speed of the draw roll 1. This is done so that the leading edge of the succeeding sheet overlaps the trailing edge of the preceding sheet. Next, the ejector conveyor applies a ejector roll and feed at the speed necessary to sequentially stack the overlapping sheets St, thereby sequentially depositing them on the pallet of the stacking table 15.

In addition, in this type of sheet cutter, when the continuous sheet S is accumulated and reaches a predetermined amount, the cutter 3 is stopped or the sheet is gated out (through the gate 14).
The layers are stacked on the second stacking table 15A. ) to prevent sheets from reaching the second high-speed conveyor 6, low-speed conveyor 8, and ejection conveyor 12, and during this time, a new pallet 16 is replaced using a pallet fork 18. For this reason, the product yield has been affected and the production volume has been reduced.

FIG. 2 is a side view of an invented embodiment that solves the above problems.

The following description will be given based on the embodiments of the present invention.A roll of paper, etc., is taken up by a draw roll 21 and a pressing roll n, cut by a cutter B, and then cut (see) in the same manner as in the past. This sheet S is driven by a high-speed conveyor δ driven by a high-speed conveyor motor, first and second low-speed conveyors 28 and 30 driven by a first clutch 4 together with a low-speed conveyor motor, and an ejection conveyor motor 31. The materials are conveyed via a protruding conveyor n and deposited.

The above-mentioned high-speed conveyor 5 feeds the sheets S slightly faster than the speed of the draw rolls 21 to create an interval between the sheets. It is generally said that it is desirable that this interval be around 100 mm in order to improve the overlap.

The sheet is then conveyed and transferred to a first low speed conveyor and a second low speed conveyor. At that time, the first low-speed conveyor motor is driven more, and at the same time, the first low-speed conveyor is connected to the second low-speed conveyor by the first clutch 4, and is operated at the same speed. However, since the speed of the draw roll 21 is set to be approximately X to 4 times slower, the succeeding sheet overlaps the preceding sheet. The lap amount is determined to be between the sheet length h and the sheet length, and the sheet is transferred to the ejection conveyor n. At this time, the ejector conveyor is controlled by the ejector conveyor motor 31 at an arbitrary speed to determine the optimal stacking condition for ejecting the sheets transferred from the second low-speed conveyor (9). is set to

In addition, when the second clutch is in the open state, the second low-speed conveyor (
9) and the ejector conveyor 32 are not connected, and the former is driven separately from the low-speed conveyor motor and the latter from the ejector conveyor motor, as described above.

As described above, the roll of paper etc. is transferred to the cutter field.
The sheets are piled up via a conveyor, and when the amount of sheets on this stacking table reaches a certain amount, the pallet must be replaced. And, the present invention
In view of the above, in order to achieve continuity, when the amount of sheets on the stacking table A reaches a position slightly less than the set amount, that is, the height of the replacement setting position by a sensor not shown in the figure, the draw roll Lower the speed of No. 21 to about 3 o's. At this time, each conveyor also reduces its speed at the same rate, but only the protruding conveyor 32 does not change its speed.

When the number of sheets reaches the set amount, the first clutch 4 is released, and the drive of the second low-speed conveyor I is cut off from the first low-speed conveyor. However, since the second low-speed conveyor is connected to the second clutch, the second low-speed conveyor is driven from the protruding conveyor. This drive causes the ejector conveyor motor 31 to increase the speed of the ejector conveyor and the second low-speed conveyor (9) to 80 to 100"/. to rapidly convey the sheets on the conveyor. Make a deposit.

Depending on the speed, a holding device such as a belt may be provided at the top of the deposition section (not shown in the figure) to facilitate deposition. During this time, the high-speed conveyor 5 and the first low-speed conveyor are driven at low speed, but while the sheet is not being fed to the second low-speed conveyor, the sheet is removed from the conveyor, the last sheet is removed, and the last one is removed. When it is confirmed that the sheets have also been accumulated, the second clutch O is released, and the second low-speed conveyor I protrudes and separates from the drive of the conveyor 32.
Since the first clutch 4 is engaged, the first and second low-speed conveyor paths 30 receive the same drive source and return to normal operation. At this time, the roller 37 that presses the sheet
The pallets are piled up and then replaced.

As shown in this figure, the new pallet 36 moves forward until it touches the back jogger 39 in order to be positioned by the pallet fork in the straight direction flow. During this time, the first and second low-speed conveyors are running at a very slow speed while the stacking table of the stacked sheets is lowered, replaced, and given the time necessary to replace and return with a new pallet. to maintain sheet conveyance. Then, the above-mentioned sheet is transferred from the first low-speed conveyor to the second low-speed conveyor, and the timeliness of the low-speed conveyor is adjusted so as to adjust the time for the leading end to protrude and reach the conveyor. In addition, if there is a space required to install the pallet fork from the above-mentioned linear direction, it is also possible to discharge from the direction perpendicular to the flow direction. Therefore, continuous conveyance of the sheet by the sheet cutter can be ensured.

〔Effect of the invention〕

The present invention ensures continuous sheet stacking by utilizing a low speed conveyor and an ejection conveyor of the conveying device in combination with a motor and a clutch.
By changing the conveyance device to high speed, low speed, and slow speed, eliminating the repeated start and stop of the cutter, and being able to perform operations without gate-out of good sheets, stable sheet cutting accuracy and yield stability are achieved. This has a great effect on improving production.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional embodiment, and FIG. 2 is a side view of an embodiment of the present invention. 24...Motor for high-speed conveyor, 5...High-speed conveyor, n...Motor for low-speed conveyor, 3...First low-speed conveyor, 蓓...First clutch, brake...Second low-speed conveyor , 31...Protruding conveyor motor, n
...Protruding conveyor, oh...second clutch, ah...
・Piling table, S...sheet, W...web. Patent applicant: Hisao Takaoka, representative of Minamisenju Seisakusho Co., Ltd.

Claims (1)

[Claims] In the drive conveyance and stacking of sheets, the sheet conveyance is normally carried out by a first clutch connecting a first low-speed conveyor and a second low-speed conveyor from a low-speed conveyor motor;
When changing sheets, when the first clutch is released, the ejector conveyor from the ejector conveyor motor is connected to the second low-speed conveyor by the second clutch, thereby causing the second low-speed conveyor and the preceding sheet on the ejector conveyor to The sheet is temporarily conveyed at high speed and deposited rapidly, while the subsequent sheet is conveyed at low speed through the high speed conveyor of the high speed conveyor motor and the first low speed conveyor from the low speed conveyor motor, and the subsequent sheet is sent to the second low speed conveyor. After confirming the final accumulation of the above-mentioned sheets, the second clutch is released and the first and second low-speed conveyors are kept at a slow speed as the first clutch returns, and the stacking of sheets is changed. A conveyor device for continuous sheet stacking, which is characterized by carrying out continuous sheet stacking.