JPH04174788A - Method for tracing defect information on papermaking line - Google Patents

Abstract

PURPOSE:To enhance efficiency of line operation, simultaneously grasp conditions of defects occurred, facilitate claim treatment of products and trace defect information on the line by providing a defect sensor in the papermaking line and simultaneously introducing a computer. CONSTITUTION:A defect sensor 3 for sensing defects of machine-glazed paper and sheet paper produced in a continuous process of a papermaking line is provided and a computer 1 for controlling the aforementioned whole line is simultaneously installed to trace defect information on the above-mentioned machine-glazed paper and sheet paper. The operation of the line is controlled based on the aforementioned defect information. Thereby, defect information on the papermaking line is traced.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is directed to a paper machine that makes paper, a winder device that divides roll paper, and a paper machine that divides roll paper, in a paper making line that manufactures paper. This relates to a defect information tracking method that automatically or manually captures defect information that occurs during the operation of the entire line, including the cutting cutter device, and uses this information to automatically remove defects in the winder device or cutter device. be.

(Prior art) A paper making line generally consists of a paper machine A, a winder device MB, and a cutter device @C as shown in Fig. 2, and the product flow is generally from one parent roll to multiple rolls. Small rolls are made, and a plurality of small rolls are made from the plurality of small rolls in the cutter device.

Defects that enter the product during paper manufacturing on the papermaking line can be broadly classified into the following three types.

a. Defects that occur during paper making on a paper machine and are detected by a defect detector.

b. Repair marks created as a result of removing the above defects using a winder device.

C0 Defects discovered by human visual inspection.

Conventionally, such defect information is reported to the next process by marking the edge of the roll paper or attaching a note on the paper to the roll.

(Problem to be solved by the invention) In other words, in the conventional method, all information regarding defects is written on paper and handled offline, so the defect information obtained with this method is not fully utilized. ,
There are problems in that automatic operation for removing defects is not performed efficiently and defects cannot be detected throughout the line. .

Therefore, in order to remove defects, it is necessary to stop the rewinding of the roll paper at the defective point during work with the winder device and strip off the defective portion. Although it has a stopping function, setting the stopping position must be done manually.

In addition, the cutter device 14 also sends a reject 1 to the cutter device at the defective point in order to cut off the defective portion.
~ It is necessary to give instructions, but it is difficult to do so manually, so we perform inefficient work such as sending the product to the next process with defects in it, and then manually extracting the parts with defects in the next process.

Furthermore, since defects are not tracked throughout the entire line, it is difficult to grasp the tendency of defects to occur, and even if there is a complaint about a shipped product, it is difficult to investigate the operational cause of the defect.

The present invention has been made in consideration of the above-mentioned problems, and is capable of comprehensively capturing defect information to control automatic operation in downstream processes, as well as to facilitate understanding of operational performance and investigation of complaints. It is intended to provide a method for tracking information.

[Structure of the invention]

(Means and effects for solving the problem) The present invention tracks defect information of roll paper and plain paper manufactured in continuous processes of a paper making line, and manages line operations based on this defect information. This is a method for tracking defect information on a papermaking line that not only improves the efficiency of line operation but also facilitates the handling of product complaints by understanding the occurrence of defects.

(Example) An embodiment of the present invention is shown in FIG.

In FIG. 1, the paper making line has processes in the order of paper machine A, winder B, and cutter C, and the computer 1 that tracks the material movement of roll paper and plain paper during the process is the controller 4A of each device.

=3- Connected to 4B and 4C, inputting signals 41 to j3 indicating the operating status of roll paper and plain paper, and connected to the defect detector 3 of the paper machine to take in defect information i4, and further connected to the winder device. A manual input/output device 2 is connected to input the results of defect deletion or to input defect information discovered by human visual inspection.

Further, the controllers 4B and 4C of the winder device and the cutter device each have a setting output of 0.0. A mutual acceptance signal o2 is connected to the reject 1 and the reject 1.

When new paper made by paper machine A in Figure 1 is rolled up,
This becomes the parent roll, and the fact that 11 parent rolls have been wound is notified to the combination coater 1 through the rollers 4A to i of the paper machine. Immediately after this, defect information on the parent roll is sent from the defect detector 3 to the computer 1 through j. From these two pieces of information, the computer 1 can associate the occurrence of a parent roll with the defect information of that parent roll.

In the winder B, the defect information of the parent roll, that is, the position from the tip of the roll, is sent from the computer 1 to the controller 4A of the winder through 42. As a result, the controller 4 of the winder device stops the winder at the defective position, and the operator repairs the defect at the location where the winder stopped. This repair result is reported to the computer 1 using the manual input/output device 2, so that the computer 1 recognizes how the defects in the parent roll were repaired, and how the repair marks are entered into the divided small rolls. Recognize Taka.

The cutter device C cuts the small roll into flat paper and then rejects the paper. The reject mechanism used for this purpose opens the reject gate while the reject request is issued, and rejects the cut paper to prevent it from being mixed into the product.

The computer 1 stores defect information on the small roll that is hung on the cutter device, that is, the distance from the tip of the roll to the defect position, and stores the length of the small roll rewound when the cutter device operates and records it in the cutter device's computer [- 3 from the roller, and when the length reaches the defective position, a reject 1 request instruction is sent to the cutter controller 4C through 02 to open the reject 1 gate.

Specifically, in order to make the above three processes continuous, roll numbers are assigned to the parent roll and small roll for identification when each occurs, and these numbers are shared between the internal processing of the combi coater and the operator's operations. Make sure to use it.

For example, if parent roll No. 100 occurs in paper machine A, the computer 1 receives defect information about roll No. 100 from the defect detector 3, and recognizes where the defect is on roll No. 1.00.

Furthermore, the operator is informed via the manual input/output device 2 that the generated parent roll is number 100, and the operator thereby knows that this parent roll is number 1.00.

When this parent roll is hung on the winder B, the fact that it is number 100 is inputted to the computer 1, and the computer 1 sends the defect information of the parent roll number 1.00 to the controller 4B of the winder B.

Winder equipment [B's controller 4B stops the winder at the defective position, the operator repairs the defect,
The results are input to the computer 1 via the manual input/output device 2, and the computer 1 thereby knows that the defect in roll No. 100 has been repaired.

Next, suppose that five small rolls are generated in winder B, the computer 1 receives the numbers 101 to 105 of these small rolls.
d2 recognizes that the defects repaired by the winder are numbered from 100 to 105 of the small roll.

The computer 1 informs the operator through the manual input/output device 2 that the small roll numbers are 101 to 105, and the operator thereby recognizes that the small rolls are numbered 101 to 105.

In the cutter device C, the operator selects a small roll to be hung on the cutter, for example, if he selects numbers 10 to 103, the operator inputs the number into the computer via the manual input/output device 2, and the combination = 7 - user 1. recognizes the number of the small roll hung on the cutter device C by this.

The computer 1 remembers where the defects are in the small rolls numbered 101 to 103, and when the cutter device EC starts to rewind the small rolls, the computer 1
inputs the unwound length signal from controller 1-roller 4C of the cutter device through "3".

When the rewinding length reaches the defective distance, the computer 1 outputs an instruction to open the reject gate through 02, and the computer 1 confirms that the defect of the small roll was not mixed into the plain paper due to this rejection. recognize.

In this way, automatic operation of the winder device and the cutter device becomes possible. Further, an identification number is similarly attached to the pile of plain paper cut by the cutter device.

For example, if the number of the pile of plain paper is 000, it can be determined from which parent roll and small roll the pile of plain paper was made in the following manner.

Parent roll number (1,00) → Small roll number (101,1
02°=8-103) → Hirabanyama number (1000).

In addition, contrary to this assembly, it is also possible to go back and extract the small roll number and parent roll number from the flat stack.

Since the flat stack is shipped as a product, complaints from customers are given the flat stack number. From this number, the numbers of the small roll and parent roll are derived, and the fissure is processed based on this roll number. It is possible to investigate defect information possessed by each roll and its repair status, which speeds up complaint processing.

The above has described defects detected by defect detectors, but since defects can also be found by human visual inspection, defect information can be entered into a computer via a manual input/output device at the time it is found, so that it can be used from now on. It is possible to perform the same processing as for the unloading station detected by the defect detector.

〔Effect of the invention〕

- As explained, according to the present invention, the steps of the paper machine, winder device, and cutter device can be reduced to 8! - By introducing a computer to manage rolls and flat piles, it becomes possible to automatically stop operation in the winder device and automatic reject operation in the cutter device, increasing line operation efficiency and further improving defect The assembly of rolls and flat piles can be managed by managing the number of rolls and flat piles to track the occurrence of defects,
Not only can the repair situation be easily analyzed, but also product complaints can be easily handled.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing an embodiment of the present invention, Fig. 2 is a diagram showing the general configuration of a paper making line, and Fig. 3 is a diagram showing rolls and piles in the paper machine, winder device, and cutter device. FIG. 2 is a diagram showing the flow of products. A... Paper machine B... Winder device C
...Cutter device 1...Computer 2.
・Input/output device 3 ・Defect detector 4A, 4B
, 4G...controller

Claims (1)

[Claims] A defect detector is provided to detect defects in rolled paper and plain paper manufactured in continuous processes of a paper making line, and a computer is provided to manage the entire paper making line, and track defect information of the rolled paper and plain paper. and managing line operations based on this defect information.