JPH04352895A - Controller of paper machine - Google Patents

Abstract

PURPOSE:To provide the subject device having a specific constitution and, when a reel having a defect on the quality is produced, capable of changing the use of reel for an ordered roll having any other size so as to minimize the damage of the reel, thereby permitting to improve the production efficiency of the paper machine. CONSTITUTION:The quality information and the defect information of a reel produced with a paper machine are detected with a product quality information detecting-circuit 2, and the paper breakage information of the reel and the frame-changing information of the machine are detected with a paper machine informationdetecting circuit 3. These information is inputted into a paper machine control circuit 1 connected to the product quality information-detecting circuit 2 and the paper machine information-detecting circuit 3 to control the employment of the reel to paper products.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper machine control device used in a paper machine or the like in a paper manufacturing plant.

0003

[Prior Art] When paper is made with a paper machine, a reel of paper is generated, and this reel is allocated to the size of the roll ordered by the customer, which is planned in advance, and is processed by a winder in the downstream process. We sell reels in custom-sized rolls.

However, not all of the reels produced by paper machines can be made into products due to problems with equipment, raw materials, chemicals, and the like.

[0005] Under the above-mentioned operation, even if rolls of the originally planned order size are allocated to the generated reel, if there is a quality problem in one part of the reel, the customer Since it becomes impossible to secure the number of rolls ordered, the operator has to constantly recalculate and determine the dimensions of the rolls to be allocated to the reel through trial and error. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its purpose is to:
To provide a paper machine control device capable of improving the production efficiency of a paper machine by changing the size allocation of ordered rolls to reels so as to minimize product damage caused by such parts.

[Configuration of the invention]

[0008]

[Means for Solving the Problems] The present invention provides a product quality information detection circuit that captures quality information and defect information on reels made by a paper machine, and a paper machine information detection circuit that detects paper breakage information and frame replacement information on reels. circuit, and a paper machine control circuit that is connected to the paper machine information detection circuit and the product quality information detection circuit, inputs quality information, defect information, paper breakage information, and frame replacement information, and controls product allocation on the reel. This is a paper machine control device.

[0009]

[Operation] A detection circuit that captures quality information and defect information of the reel made by the paper machine, detects paper breaks and frame changes on the reel made by the paper machine, and captures quality information and defect information, and paper breaks and frame changes. The paper machine control circuit connected to the detection circuit that detects the paper machine controls the product allocation of the reel produced.

0010

[Embodiment] Next, an embodiment of the present invention will be described. Figure 1 shows quality information 21 and defect information 2 of the reel produced by a paper machine.
2, a paper machine information detection circuit 3 that detects reel paper break information 23 and frame change information 24, and a paper machine information detection circuit 3 that is connected to the paper machine information detection circuit 3 and product quality information detection circuit 2. The paper machine control device includes a paper machine control circuit 1 which inputs quality information 21, defect information 22, paper outage information 23, and frame replacement information 24 and controls product allocation for reels. That is, the present invention includes a detection circuit that captures quality information 21 and defect information 22 of reels made by a paper machine, means for detecting paper breakage information 23 and frame change information 24 of reels made by a paper machine, Quality information 2
1 and a paper machine control circuit 1 connected to a means for taking in defect information 22 and a means for detecting paper cut information 23 and frame change information 24 to control product allocation of reels made by the paper machine. This is a paper machine control device with the above configuration, which takes in reel quality information 21 and defect information 22 when a reel is generated, and when allocating them and a pre-planned roll order size to the reel.
If a quality or defective part of the reel occurs, the position of the roll may be changed or the ordered dimensions of another roll may be assigned to remove the part of the reel with the quality or defect that does not become a product. Control is carried out to minimize the damage caused by

First of all, the paper machine control circuit 1 stores winder work units in advance in the storage device 1 for the reel to be made.
6 is saved.

Next, when a reel actually occurs in the paper machine,
The paper machine control circuit 1 receives reel quality information from the basis weight and moisture meter, reel defect information 22 from the defect detector, and a frame change timing signal and reel winding length from the paper machine drive control device.
is taken in.

The paper machine control circuit 1 checks whether reel quality information 21 such as basis weight, moisture content, paper thickness, etc. is within a predetermined tolerance range, and whether paper defect information 22 about black spots and holes is within a predetermined tolerance range. Determine whether it is within the range.

If the detected value is not within a predetermined tolerance range, the width and length of that portion are calculated. Figure 2, Figure 3
is an example for one reel. In the figure, A indicates the length of the reel, and B indicates the width of the reel. In addition, quality
The portion for which the defect information is not within the allowable range is the portion 32, and the smallest rectangle that includes it is defined as the portion 33, and this width and length define the portion as a portion that cannot be used as a product. A portion 33 indicates the position of the roll to be unloaded by the winder in advance with respect to this reel. That is, this reel is divided into four parts B1, B1, B2, and B2 in the width direction, and divided into four parts A1, A1, A1, A1, and A1 in the flow direction. In other words, there are 10 rolls of B1 x A1, B2 x A
It is a reel that can take 10 rolls of 1 each. but,
For this reel, part 34 (this is the same as rectangle 33) in the figure is a part that cannot be produced as a product due to quality and defects. In the example in the figure, there are two rolls of B1 x A1,
Two rolls of 1 indicate that it cannot be taken. This means that even if the defective part is only the part 34, the result is two rolls of B1 x A1 and two rolls of B2 x A1.
It means that the part of the duty becomes defective.

In the present invention, the following operations are performed to minimize this defective portion.

First, the planned pick-up position for one reel is changed, and a combination is found that minimizes the portion that must be discarded as waste paper. At this time, the size and number of rolls reserved for the portion that must be discarded as waste paper, as well as the size and number of rolls that can be extra from the constraints of the reel width, are calculated.

FIGS. 4 and 5 are examples of changing the pick position. W1
, W2 each represent a winder work unit within the same papermaking lot. That is, W1 is the reel width B1×2, B
W2 is a winder work unit in which the reel width is divided into B2x3 and the flow is unloading a roll A2. Now, if a defective position such as part 44 exists on the reel, two rolls of B2 x A1 would have to be considered defective if the initial roll dimensions were taken at position 41, but if there was a defective position such as part 45, If you change the position, you only need two rolls of B1 x A1. In other words, by changing the position, it is possible to increase the number of non-defective products. In addition, two B1 x A1 rolls (451, 452 in the figure) that cannot be obtained as products due to defective parts are placed at the end of this winder work unit as rolls 471, 472 in the work unit in order to secure the number of ordered rolls. Add a new number of ordered rolls. At this time, due to the reel width restriction, two rolls of B2 x A1 can be taken on each side of rolls 471 and 472, but these are again used to replace the rolls that could not be taken due to defective parts on other reels. It becomes possible to do so.

Next, for that one reel, the planned winder work unit is changed to another work unit in the same papermaking lot, and the work unit is changed so that the part that must be discarded as waste paper is minimized. and look for arrangements. Then, at this time, the dimensions and number of rolls that are allocated to the portion that must be discarded as waste paper, as well as the extra roll dimensions and number that can be taken from the reel width scale, are calculated.

FIG. 6 is an example of changing the winder work unit. W1 and W3 each represent a winder work unit in the same papermaking lot. Now, suppose that there is a quality defect position 53 on the reel, and if the original winder work unit W1 is allocated, then B1 4 rolls of ×A1 and 4 rolls of B2 × A1 must be treated as defective paper, but if the winder work unit is W3, B2 × A
There will be 6 rolls of 3 rolls plus (B2 x 3) x A4 worth of wasted paper, but the loss will be less than when allocating W1.

[0020] The product amount of the roll portion that becomes defective paper is displayed when the pick-up position is changed as described above, and when the winder work unit and pick-up position are changed, respectively, and a method is adopted to reduce the loss.

[0021] If the above procedure is executed every time a reel is generated, it becomes possible to effectively combine rolls within the same papermaking lot.

[0022] Although the present invention is directed to a paper machine,
In terms of the process before dividing the reel in the winder,
It is also possible to target coating machines.

Incidentally, FIGS. 7 and 8 are flowcharts showing a function for controlling product allocation for paper-made reels.

[0024]

[Effects of the Invention] According to the present invention, when a quality or defect problem occurs with a reel generated in a paper machine, control is performed to minimize the defective part of the reel that does not become a product, and the production efficiency of the paper machine is improved. do.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a paper machine control device showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of reel division in which winder work units are assigned.

FIG. 3 is an explanatory diagram of reel division allocated by changing the take position of the winder work unit.

FIG. 4 is an explanatory diagram of reel division allocated by changing the take position of the winder work unit.

FIG. 5 is an explanatory diagram of reel division allocated by changing the winder work unit.

FIG. 6 is an explanatory diagram of reel division allocated by changing the winder work unit.

FIG. 7 is a flowchart explanatory diagram showing a function of controlling product allocation for paper-made reels.

FIG. 8 is a flowchart explanatory diagram of a function for controlling product allocation for reels.

FIG. 9 is a flowchart explanatory diagram of a function for controlling product allocation for reels.

[Explanation of symbols]

1...Paper machine control circuit 2...Product quality information detection circuit 3...Paper machine information detection circuit

Claims (1)

[Claims] 1. A product quality information detection circuit that detects quality information and defect information of a reel made by a paper machine, a paper machine information detection circuit that detects paper breakage information and frame replacement information of the reel, and this paper machine. connected to an information detection circuit and the product quality information detection circuit to detect the quality information, the defect information,
A paper machine control device comprising: a paper machine control circuit that inputs the paper-out information and the frame change information and controls product allocation for the reel.