JPH05247874A - Production schedule support device of paper machine - Google Patents

Abstract

PURPOSE:To improve the quality of a roll produced on a winder by determining the finishing processing sequence of the produced reel from a schedule input device having the information of the finishing procession schedule inputted therein and from a normal paper length-calculating function. CONSTITUTION:The finishing processing schedule of a produced reel on a winder is stored in the memory device 24 of a schedule controller 2. The normal length and position of the remaining paper are calculated on the information of product defects, and the finishing processing sequence of the reel is determined in the schedule controller 2 so as to minimize defective paper parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production plan support device for a paper machine in a paper manufacturing plant that produces sheet-shaped products.

[0002]

2. Description of the Related Art When a paper machine is used to make paper, a reel around which the paper is wound is generated. This reel is allocated in advance to a customer's order roll size, and is used by a winder as a downstream process. We sell reels to rolls of that size.

However, all reels generated in a paper machine are not necessarily approved as a product in terms of quality due to various problems in equipment, raw materials, chemicals, and the like.

Under the above-mentioned operation, if a roll of the initially planned order size is allocated in the order of the reels that have occurred, and if there is a reel quality problem in a part of the reels, As a result, there was a high possibility that defective parts would be mixed in the rolled part. For this reason, in terms of quantity, it means that rolls to be manufactured are manufactured, but since defective products are included, there is a manufacturing problem when viewed comprehensively.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and its object is, when a reel occurs and the reel has a portion having a quality problem, that portion. A production plan for a paper machine that can improve the quality of rolls that are wholesaled by the winder by changing the order in which the processing plan (roll size) at the winder is allocated to the reels to minimize the deterioration of product quality due to It is to provide a support device.

[0006]

SUMMARY OF THE INVENTION The present invention is a defect detection device for detecting product defect information of paper made by a paper machine,
A normal paper length calculation function that calculates the remaining normal paper length and position based on product defect information from this defect detection device, a plan input device that captures finish processing plan information in the winder process of the paper machine, and this plan A production plan support device for a paper machine, comprising: a planning control device that determines a finishing processing order of a reel to be made from paper, based on an input device and a normal paper length calculation function.

[0007]

In the production planning support apparatus for the paper machine according to the present invention, the product defect information of the paper made by the paper machine is detected, and the normal length and position of the remaining paper are detected by the product defect information from the defect detection apparatus. Is calculated, the finish processing plan information in the winder process of the paper machine is taken in, and the finishing processing order of the reels to be manufactured is determined from the plan input device and the normal paper length calculation function.

[0008]

EXAMPLE An example of the present invention will be described below. In FIG. 1, reference numeral 1 denotes a defect detection device 4 for detecting product defect information of paper made by a paper machine, and normal paper for calculating remaining normal paper length and position based on product defect information from the defect detection device 1. A length calculation function, 3 is a plan input device that takes in finish processing plan information in the winder process of the paper machine, and 2 is a plan input device 3 and a normal paper length calculation function 4 that determines the finishing processing order of the reels to be made. Defect detection device 1 which is a planning control device and detects product information of paper manufactured by a paper machine
And a plan input device 3 that captures finishing process plan information in the winder, which is a post-process of the paper machine, a defect detection device 1 that detects product information, and a plan input device 3 that captures finishing process plan information in the winder. 1 shows a production planning support device including a planning control device 3 that determines the order in which reels processed by a paper machine are allocated to a finishing processing plan in a winder.

In the above structure, when the reel product information is taken in and the reel has a portion having a quality problem, the winder for the reel is arranged so as to minimize the deterioration of the product quality due to this portion. The processing plan is allocated and the order is changed, and control is performed so as to improve the quality of rolls that are wholesaled by the winder.

That is, the production planning support apparatus of the present invention has a means for detecting product information, a means for fetching finishing processing plan information at the winder, and an order for allocating the paper-made reels to the finishing processing plan at the winder. And means for determining.

FIG. 2 is a block diagram of the production planning support device.

First, the plan control device 2 stores a finish processing plan in a winder for a reel to be made in advance in a storage device 24 via a transmission control device 23. In this finishing process plan, the product information of the reels such as basis weight and water content is exactly the same, and the ones with different size and flow of rolls processed by the winder are treated as one group. That is, from the paper machine side (reel side), it is only necessary to manufacture the reels of the same product, and from the winder side, one group of finishing processing plans corresponds to the reels of the same product. In one group of finishing processing plans, there are usually work units for a plurality of winders.

3 to 5 show examples of three work units existing in one group of finishing machining plans. The work unit A in FIG. 3 indicates that twelve rolls having a width a and a roll length of 10,000 m are made by the winder. Work unit B in FIG.
Shows that seven rolls having a width b ₁ and a roll length of 9000 m are made, and 14 rolls having a width b ₂ and a roll length of 9000 m are made. From a similar point of view, the work unit C in FIG. 5 shows that 20 rolls having a width c and a winding length of 8000 m are made. Now, since these work units are included in one group of finishing processing plans, these work units can be processed from reels of the same product to form rolls. However, due to the efficiency of work setup such as slitter positioning in the winder, the method of advancing the finishing processing plan is to move to the next work unit after completion of one work unit.

Next, the planning control device 2 takes in product information from the basis weight / moisture meter for the reel to be made into paper. Here, as typical product information, the coating amount of paper made by an on-coater machine is taken as an example.

FIG. 6 is a diagram in which the coating amount is extracted for each flow position. At this time, the threshold value S1 and the threshold value S2 are respectively determined for a certain set value, and if the threshold value S1 is exceeded, the product is treated as a product, but the quality becomes somewhat inferior, and the threshold value is set. When it exceeds the value S2, it cannot be said that the product is anymore, and that part is judged as a waste paper.

Here, as shown in FIG. 6, the planning control device 2 determines that the measured value M exceeds the threshold value S1 from the measured value M of the coating amount and the threshold value S1 and the threshold value S2. When the value reaches S2, the values of the threshold value S1 and the threshold value S2 are discriminated as A and B, respectively, and the paper loss degree connecting a straight line therebetween is calculated.

Now, assume that reels (frames) as shown in FIGS. 7 and 8 are generated for the three work units shown in FIGS. The first frame R1 is about 2 places on the way L1000m each
Includes spoiled paper. In addition, the second frame R2 is one place L10
Includes 00m of waste paper.

When there are three work units shown in FIGS. 3 to 5 and two reels shown in FIGS. 7 and 8, the plan control device 2 carries out the following operations.

First, a comparison is made as to whether the total reel length of two reels is longer than the reel total reel length for three work units. If it is long, it can be said that there is a possibility that three work units can be rolled.

The planning control device 2 determines 3! To determine the work order for the work units A, B, C and the reels R1, R2.
* 2 = 12 calculations are performed. 9 and 10 show examples in which reels are allocated from the first frame in the order of work units A, B, and C.

In the conventional calculation, all the parts other than the damaged paper are considered to be products. Therefore, the amount not incorporated into the product other than the damaged paper in FIGS. 9 and 10 is (41000-40000) + (27500- 27000) + (9600-90
00) + (28000−27000) + (45000−40000) = 8100 FIGS. 11 and 12 show an example when the reels are allocated from the first frame in the order of work A, C, and B. The amount that was not incorporated into the product other than the damaged paper in Figs. 11 and 12 is (41000-40000) + (27500-24000) + (9600-80
00) + (28000-26000) + (45000-45000) = 8100, which is the same as the work order A, B, C in FIGS.
Either work A, B, C or work A, C, B may be performed in either order.

This time, the planning control device 2 is performing the calculation in consideration of the value of the paper loss degree. In other words, the area of the portion where the allocated work unit is between 0 and 1 of the damaged sheets is calculated. In the case of FIGS. 9 and 10, it becomes 1600 + 125 + 1750 + 80 + 250 = 3805, and in the case of FIGS. 11 and 12, it becomes 1600 + 142.9 + 500 = 2242.9. That is, considering the portion of the paper loss degree, the degree of the paper loss degree 0 to 1 when the work is performed in the order of A, B, and C of FIGS. It is higher than the order of B. It is determined that the higher the value, the closer to the damaged paper. Therefore, A, C and B in FIGS. 11 and 12 are selected here.

In the above example, the work A, B, C,
Although the works A, C, and B were compared with each other, the works A, C, and B were calculated for all combinations, and the work order and the reel order in which the area portion of the waste paper degree is the minimum may be adopted.

As described above, in the finishing processing plan of one group, the area of the waste paper degree is calculated for each combination of work order and reel order, and the area is not close to the waste paper, that is, the area of the waste paper degree is minimized. If the combination is adopted, the highest quality roll in the product will be obtained, and the quality will be stabilized.

Although the present invention is intended for a paper machine and a winder, it is also possible to apply a combination of a coater and a winder and a super calendar and a winder.

[0026]

According to the present invention, the degree of damaged paper is defined for the reel generated in the paper machine, and the work order in which the portion in the 0 to 1 section is minimized is searched for. Therefore, the portion near the damaged paper is avoided as much as possible. The product at the winder can be obtained in the form, which helps improve the quality of the product.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a production planning support apparatus showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of a planning control device.

FIG. 3 is a configuration diagram showing an example of a work unit A existing in a finishing machining plan of one group.

FIG. 4 is an explanatory diagram of a work unit B.

FIG. 5 is an explanatory diagram of a work unit C.

FIG. 6 is an explanatory diagram showing a paper loss degree of product information for one reel.

FIG. 7 is an explanatory diagram showing a paper loss degree for a reel R1.

FIG. 8 is an explanatory diagram showing a paper loss degree for a reel R2.

FIG. 9 is an explanatory diagram of reel division when work is advanced in the order of work units A, B, and C, and reel R1 is allocated in the order of reel 1 and reel 2;

FIG. 10 is an explanatory diagram of reel division when reel R2 is used.

FIG. 11 is an explanatory diagram of reel division when the work is advanced in the order of work units A, C, and B and the reel R1 is allocated in the order of reel 1 and reel 2;

FIG. 12 is an explanatory diagram of reel division when reel R2 is used.

[Explanation of symbols]

 1 ... Product information detection device 2 ... Planning control device 3 ... Finishing processing plan input device

Claims (1)

[Claims] 1. A defect detection device for detecting product defect information of paper made by a paper machine, and a normal paper length for calculating remaining normal paper length and position based on the product defect information from the defect detection device. A planning function for determining the finishing processing order of the reels to be manufactured from the calculation function, the plan input device for taking in the finish processing plan information in the winder process of the paper machine, and the plan input device and the normal paper length calculation function. A production planning support device for a paper machine, which comprises a device.