JPH03216459A - Paper cutter control device - Google Patents

Abstract

PURPOSE:To make quantification possible of cutter work by inputting each detection output of a roll information and roll rotary condition detecting part, defect detector, cutter knife action time number detecting part and a cut paper passing detecting part, with an action point of a cutter knife serving as the reference point, to a control part. CONSTITUTION:When roll paper, drawn out from a feed roll 7, reaches a cutter knife action point, the roll paper is cut to a predetermined length, and here a number of action times of a knife is counted being based on a detection signal of a cutter knife action time number detecting part 15. Next, whether a paper cut is provided or not is discriminated from a detection signal of a roll rotary condition detecting part 13, and whether the cut paper is provided with a defect or not is discriminated from a detection signal of a defect detector 14 and a read data of a roll information file part 14, when the defect is continuous, the defect paper is discarded to store its number of sheets in a file part 21 by open-controlling a gate 12. On the other hand, when the defect is of single generation, a defect mark is inserted into a mountain of the cut paper in the point of time it reaches a layboy part 4.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is directed to cutting paper wound on a roll (take-up roll) into a predetermined size to form a bundle of a predetermined number of sheets. This invention relates to a paper cutter control device for taking out paper.

(Prior Art) Conventionally, there has been an unreel stand section in which multiple rolls of raw material are set, and a cutter body that pulls out the paper wound on the rolls in an overlapping state and cuts it into sheets of a predetermined size. A paper cutter control device is known, which includes a paper cutter control device and a layaway unit that conveys cut paper and takes out a predetermined number of sheets as a cut pile.

Further, since the trimming pile is shipped as a bundle in units of, for example, 1000 sheets, a reamer force insertion device is connected to the paper cutter control device.

Then, the number of cuts (ream count) is counted based on the operation signal of the cutter knife provided in the cutter body,
When this ream count number reaches a set value, a reamer force serving as a partition is inserted into the cutting pile so that the number of reams can be grasped.

(Problems to be Solved by the Invention) However, according to the above conventional paper cutter control device,
Since only the number of reams of the cutting pile is known, there is a problem in that it is not possible to accurately manage the amount of feed of the raw material roll, good paper, defective paper, and cut paper.

In addition, defect detection was also performed visually by an operator based on roll information obtained in the upstream process, and defect marks were manually inserted at the defect positions.

For this reason, it is not possible to accurately calculate the yield in the cutter process.
In addition, since it relies on visual inspection, defect detection accuracy is poor, and manual sorting work in the finishing process, which is a downstream process, increases, which causes a deterioration in sorting efficiency.

In view of the above-mentioned circumstances, the present invention aims to quantify the cutter work by accurately grasping the feed amount of the original roll, the amount of cutting, the amount of rejects/good sheets fed, the position of defective points, the amount of trimming pile discretion, etc. on a sheet-by-sheet basis. The purpose of the present invention is to provide a paper cutter control device that enables the following.

Another object of the present invention is to provide a paper cutter control device that can accurately and efficiently perform defect mark insertion work and ream mark insertion work.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention includes an unreel stand section in which a plurality of rolls of raw material are set, and a stand that is wound up on the rolls of raw material. Controls the flat paper cutting process, which is equipped with a force/gutter main body that pulls out sheets of paper in a stacked state and cuts them into a predetermined size, and a layboy unit that conveys the cut paper and takes it out as a cut pile of a predetermined number of sheets. A device,
a roll information input unit for inputting information about the raw roll, such as the total roll length and defect position, which has been grasped in advance in an upstream process; and a roll rotation state for detecting the rotational state of the raw roll set in the unreel stand unit. a detection section, a defect detector that detects defects in paper pulled out from the original roll, a cutter knife operation number detection section that detects the number of operations of the cutter knife provided in the cutter body, and a cutter knife operation point detecting section. a cutting paper passing detection unit that tracks the cutting paper up to the layboy portion as a reference point, and detecting the roll information using the operating point of the cutter knife as a reference point, the roll rotation state detection unit, a defect detector, and the number of cutter knife operations. By inputting the detection outputs of the detection unit and cut paper passage detection unit, the amount of roll used, amount of trimming, amount of defective paper discharged,
A control unit that quantifies and stores data such as defect point positions, and the like.

Further, the control unit is characterized in that it gives an instruction to the defect mark insertion device to insert a defect mark at a defect position based on the roll information and defect detection data.

Furthermore, the control unit is characterized in that it gives an instruction to the ream mark insertion device to insert ream marks into the cut sheets that have reached a predetermined number of sheets.

(Operation) According to the above configuration, the hole information and defect detection data grasped in the upstream process. The roll rotation status and cutting paper passing signal are input, and based on these input data, the roll feed amount, cutting amount, reject amount, good paper feed amount, defect point position, cutting amount loading amount, etc. can be grasped on a sheet-by-sheet basis. , its quantification becomes possible.

Further, defect mark insertion and ream mark insertion commands can be accurately performed on a sheet-by-sheet basis.

(Embodiment) FIG. 1 shows the structure of an embodiment of a paper cutter control device according to the present invention, and FIG. 2 shows the overall structure of a plain paper cutting process.

As shown in FIG. 2, the overall configuration of the plain paper cutting process includes an unreel stand section 1, a cutter main body section 2, a paper conveyance section 3, and a layboy section 4.

A plurality of original fabric rolls 5 wound up in the upstream papermaking process are set in the unreel stand section 1.

The cutter main body 2 includes a slitter 6 that cuts the paper that has been pulled out in a stacked state from the original fabric roll 5 in the width direction, and a feed roll 7 that pulls out the paper wound around the original fabric roll 5 while maintaining appropriate tension. and a cutter knife 8 that cuts the paper sent out from the feed roll 7 into sheets of a predetermined length.
It is equipped with

The paper conveyance unit 3 includes a first high-speed conveyor 9, a second high-speed conveyor 10, and a low-speed conveyor 11. A jet gate 12 is provided between the first high-speed conveyor 9 and the second high-speed conveyor 10 to remove defective paper. is provided.

The cut sheets are conveyed to the layboy section 4 and can be grasped as a cut pile of a predetermined number of sheets.

The various sensor systems include, as shown in FIG. 1, a roll rotation state detection section 13 that detects whether or not a paper break has occurred in any of the material rolls 5 based on the rotation state of the material rolls; A defect detector 14 is provided on the input side of the slitter 6 and detects defects in paper sent out from the original roll 5.
, a cutter knife operation number detection section 15 for detecting the number of operations of the cutter knife 8, and a cutter knife operation number detection section 15 which is provided at an appropriate location such as at least the passing position of the cutter game 12, the layboy section 4, etc., and detects the passage of the cut paper. The cutting paper passing detection section 16 outputs a cutting paper passing signal.

Detection signals from these sensor sections 13, 14, 15.16 are sent to the central processing unit 1 via the process input/output device 17.
It has been incorporated into 8.

Further, a roll information file section 19 is connected to this central processing unit 18 .

In this single roll information file section, information regarding the raw roll 5 that has been grasped in the upstream process, such as the total roll length and defect positions, is stored in advance via the roll information input device 20.

The central processing unit 18 includes the sensor units 13 to 16.
The process shown in FIG. 3 is executed based on the detection signal and the roll information in the roll information file section 19, and the results are stored in the cutting pile information file 21.

The cutter processing results are filed in this cutting pile information file 21. In addition, data such as the usage amount of the original roll, the amount of cutting, the amount of defective paper rejected, the amount of good paper sent out, the position of defective points, and the amount of stacked sheets to be cut can be filed on a sheet-by-sheet basis.

Further, a defect mark insertion device 22 and a reamer force insertion device 23 are connected to the central processing unit 18, and when a defect is detected by the defect detector 14, a defect mark is inserted at that location. When the ream count number reaches a predetermined number, a reamer force insertion command is given to the reamer force insertion device 23.

Next, the operation of this embodiment will be explained according to the flowchart shown in FIG.

When the process of this embodiment starts, first, each detection output signal of the roll rotation state detection section 13, defect detector 14, cutter knife operation number detection section 15, and cutting paper passage detection section 16 is taken in, and the roll Various role information stored in advance is read from the information file section 19 (step STI).

Next, it is detected whether the roll paper pulled out from the feed roll 7 has reached the cutter knife operating point, and when the cutter knife operating point is reached, the cut knife operates to cut the roll paper into a predetermined length. do. The number of cutter knife operations at that time is counted (steps ST2, ST3). The processing in steps ST2 and ST3 is executed based on a detection signal from the cutter knife operation number detection section 15.

Next, the roll rotation state detection unit 13 detects whether or not there is a paper cut.
It is determined based on the detection signal (step ST4). For example, if 5 rolls of fabric are set in the unreel stand section 1, 5 rolls will be counted per cut.
If one machine runs out of paper, the number of sheets per cut needs to be adjusted to four. This process is performed in step ST.
It is executed in 5.

Next, a defect detector 1 placed on the entrance side of the slitter 6
It is determined whether or not the cut paper contains a defect based on the detection signal of No. 4 and the read data of one roll information file section (step ST6).

When a defect in the cut paper is detected (step ST6 YES), it is then determined whether the defect is continuous or one-off (step ST7).

Detection signal of defect detector 14 and roll information file section 1
From the read data in step 9, if the defects are continuous (
Step ST7 YES), the reject gate 12 is controlled to be opened and the defective paper is discarded (step ST8). Next, the number of defective sheets (reject amount) is stored in the cutting pile information file section 21 (step ST9).

On the other hand, if the defect is one-off (step ST7N
O) It is mechanically more efficient to replace defective paper in the downstream process than to control the opening of the reject gate.
When the cut paper reaches the layboy section 4, a defect mark insertion command is output to the defect mark insertion device 22. Then, the defect mark inserting device 22 inserts a defect mark that serves as a mark of the defect position into the stack of cut paper (step ST10).
, STII'). In addition, the defect position data is saved in the cutting pile information file section 21 (ST12).
.

In this way, the number of sheets to be cut reaches a preset value while taking into account the number of pieces of paper torn and the amount of rejects (step ST
13) When the cut paper reaches the layboy section 4 (step ST14), a ream mark insertion command is output to the ream mark insertion device 23 (step ST15).

Next, data such as ream mark insertion position data and roll usage amount are stored in the cutting pile information file section 21 (step ST16).

The above processing from step ST2 to step ST16 is as follows:
The process is executed until a predetermined termination command is input (step ST17).

As described above, according to this embodiment, the roll information and roll rotation state detection unit 13 and the defect detector 1 are grasped in the upstream process.
4. Each detection signal from the Kazota knife operation number detection section 15 and cut paper passage detection section 16 allows the roll usage amount, defective paper reject amount, trimming amount, defect position, etc. to be accurately grasped on a sheet-by-sheet basis. This makes it possible to quantify the cutter process.

Further, the defect mark insertion work and the ream mark insertion work can be performed accurately and efficiently.

[Effect of the Invention J As explained above, according to the present invention, the amount of roll usage, amount of defective paper rejects, amount of rejected paper, etc. The cutting amount, defect information, etc. can be accurately grasped on a sheet-by-sheet basis, making it possible to quantify the cutter process.

In addition, since the number of sheets to be cut and the arrival of defective sheets can be determined using the Layboy, it is possible to accurately insert reamer force against the cutting pile and defect markers on a sheet-by-sheet basis, increasing the efficiency of sorting work in the downstream process. I can do it.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a paper cutter control device according to the present invention, FIG. 2 is an overall configuration diagram showing the flat paper cutting process of the embodiment, and FIG. It is a flowchart which shows a processing procedure. 1... Unreel stand section 2... Cutter main body section 3... Paper transport section 4... Layboy section 5... Original fabric roll 8... Cutter knife 12... Reject gate 13... - Roll rotation state detection section 14... Defect detector 15... Cutter knife operation number detection section 16... Cut paper passage detection section 18... Central processing unit 19... Roll information file section 21... - Cutting pile information file section 22...defect mark insertion device 23...ream mark insertion device

Claims (3)

[Claims] (1) An unreel stand section in which multiple rolls of raw material are set, a cutter body that pulls out the paper wound on the rolls of raw material in an overlapping state and cuts it into a predetermined size, and the cut paper A device for controlling a flat paper cutting process, which is equipped with a layboy unit that conveys the paper roll and takes it out as a cutting pile in units of a predetermined number of sheets, and the device controls the flat paper cutting process, and the device includes a layboy unit that conveys the paper roll and takes it out as a cutting pile in units of a predetermined number of sheets, and the device controls the flat paper cutting process, and the device includes a layboy unit that conveys the paper roll and takes it out as a cutting pile of a predetermined number of sheets. a roll information input section for inputting information about the material roll, a roll rotation state detection section for detecting the rotation state of the material roll set in the unreel stand section, and a defect detector for detecting defects in paper pulled out from the material roll. a cutter knife operation number detection section that detects the number of operations of the cutter knife provided in the cutter body; a cut paper passage detection section that tracks the cut paper to the layboy section using the cutter knife operation point as a reference point; Using the operating point of the cutter knife as a reference point, the roll information and the detection outputs of the roll rotation state detection section, defect detector, cutter knife operation number detection section, and cutting paper passage detection section are input, and the amount of roll usage and cutting paper passing detection section are input. Discretion, amount of defective paper output,
A paper cutter control device comprising: a control unit that quantifies and stores data such as defect point positions; (2) The control unit instructs the defect mark insertion device to insert the defect mark at the defect position based on the roll information and the defect detection data.
1) The paper cutter control device described above. (3) The paper cutter control device according to claim 1, wherein the control section instructs the ream mark insertion device to insert a ream mark into the cut sheets that have reached a predetermined number of sheets.