KR20160053819A - Method and system for producing cutting product - Google Patents

Abstract

The present invention relates to a method and a system for producing a cut product. According to an embodiment of the present invention, the method for producing a cut product comprises: a good-quality product calculating step of calculating the number and rate of unit good-quality products to be cut in a material on the basis of defect information on the material; and a material selecting step of selecting one or more materials to allow the number of the unit good-quality products to be more than or equal to the number of production plans on the basis of the calculated number of the unit products and the number of production plans.

Description

TECHNICAL FIELD [0001] The present invention relates to a production method and a production system for a foundation product,

The present invention relates to a production method of a cut product and a production system of the cut product, and more particularly, to a production method of a cut product and a production system of the cut product which can reduce an inventory amount and improve an improvement rate.

In general, a product on a film (or sheet) is produced in the form of a fabric having a size larger than the size of the product to be actually used. For example, optical members such as a polarizing plate and a retardation plate used for a display device and the like are the same. For example, considering the various factors such as the efficiency of the manufacturing process and the fluctuation of the demand for the product, the polarizer supplier (manufacturer) has to fabricate a polarizer having a length and width larger in size than the product .

Further, the fabric is, in most cases, produced in a strip shape through a continuous process, and the fabric is wound on a roll and stored. Thereafter, the fabric wound on the roll is taken out and cut into a unit product of a predetermined size.

In general, in cutting a fabric, a method of cutting a plurality of unit products simultaneously in a single cutting process is widely used. For example, a cutter frame equipped with a plurality of cutters is used. At this time, the yield of the unit product that is cut depends on how the cutting is carried out. Lower cutting efficiency increases scrap, or waste, that is discarded after cutting, which ultimately leads to increased product manufacturing costs.

Also, depending on the type of fabric, there may be undesirable defects in the product. In this case, defects are considered for quality (quality improvement) at the time of cutting the fabric. Generally, defects are formed in the manufacturing process of the fabric or the winding process.

For example, a polarizing plate used in a display device such as a TV is manufactured by (1) a step of obtaining a polarizer, (2) a step of laminating a polarizer protective layer, and (3) a step of laminating a protective film or a release film do. In the step of obtaining a polarizer, a polyvinyl alcohol (PVA) film is mainly dyed and stretched to obtain a polarizer. In the step of laminating the polarizer protective layer, a triacetylcellulose (TAC) film is attached to both surfaces of the polarizer through an adhesive to laminate the polarizer protective layer. At this time, the polarizing plate can be wound on the roll in the course of each step, and at least the product that has undergone the step (3) is wound and held on a roll. When the film is wound on a roll in this manner, it is advantageous not only in terms of transportability to each step, but also ease of storage and handling in the cutting process.

Defects of the fabric mainly occur in the stretching or winding step. For example, in the stretching process, both end portions of the fabric are fixed to the stretching device, and defects may occur in the fixing portions. In the case of the winding process, defects may occur at the end portion fixed to the roll. Further, in the case of the winding process, when there is a scratch on the roll, a periodic defect may occur in a region in contact with the roll due to the characteristics of the rotating roll. If defects are identified in the cut unit product, the loss of the product becomes large.

Accordingly, when cutting a fabric having defects, defect inspection is performed prior to cutting, and cuts are made to avoid defects so that defects are not included in the cut unit products. Also, the yield of the unit product cut as described above is taken into consideration.

In general, the cutting of the fabric may include an inspection process for inspecting the position (distribution) of the defect, a yield calculation process for calculating the yield of the unit product when the cutting is performed virtually on the basis of the defect information, It is proceeding through a cutting process in which the yield is determined to be higher than a predetermined value (highest yield) based on the calculated value.

For example, Korean Patent Publication No. 10-2008-0033863, Korean Patent No. 10-1179071, and Korean Patent No. 10-1315102 disclose techniques related to the above.

In cutting the fabric as described above, it is cut by avoiding defects, but cutting is performed considering the highest yield. In this case, the yield is the area yield, which is calculated by dividing the total area of the unit product obtained after the cutting by the total area of the entire fabric before cutting, and is usually expressed as a percentage (%).

However, in the cutting method according to the prior art, for example, the following problems are pointed out.

In recent years, most fabrics have been manufactured in very large sizes. This also takes into account factors such as the efficiency of fabric manufacturing process and the fluctuation of demand for products. For such large width fabrics, a slitting cut in the lengthwise direction of the fabric may be required. However, the cutting method according to the prior art is confined to the cutting of a unit product for the greatest area yield, and the slitting cutting is not considered. As a result, it is difficult to see the method considering the maximum cutting efficiency.

In addition, conventionally, since there is no accurate information on the condition of the fabric, the approximate workload is selected by applying the average yield of the fabric, and since the actual yield is less than the average yield, We planned to produce more than the workload. In addition, these additional yields were arbitrarily determined by the experience of the operator. Therefore, there is a problem that the inventory of final finished products increases.

Korean Patent Publication No. 10-2008-0033863 Korean Patent Registration No. 10-1179071 Korean Patent Registration No. 10-1315102

The present invention provides a production method of a cutter product and a production system of a cutter product that can establish a cutoff plan based on information on the number of customers and defects of a fabric.

It is another object of the present invention to provide a production method of a cut product and a production system of a cut product which can reduce an inventory amount and improve an improvement rate.

According to one aspect of the present invention, there is provided a manufacturing method of a unit product, comprising: a good product calculating step of calculating the number of good products and the quantity of good product of a unit product to be cut in each fabric based on defect information on the fabric; And a fabric selection step of selecting one or more fabrics to make the number of good products of the unit product equal to or more than the production planned quantity based on the production plan quantity and the calculated number of good products.

Further, in the fabric selection step, a fabric is selected which minimizes the inventory amount of the unit products out of a plurality of fabrics having a positive product ratio of a predetermined value or more.

Further, in the fabric selection step, a fabric may be selected such that the inventory amount of the unit product is minimized in preference to the production rate.

Also, in the stage of selecting the fabric, a fabric having a high rate of quality can be selected among the fabrics that minimize the inventory amount.

Also, the planned quantity of production may be the amount requested by the customer.

According to still another aspect of the present invention, there is provided a method of manufacturing a product, comprising the steps of: calculating a number of good products and an amount of good product according to sizes of unit products, And a fabric selection step of selecting a plurality of fabrics in which the number of good products of the unit products is equal to or greater than the production planned quantity based on the number of good products calculated by the production plan quantity and size according to the size of the unit product A method of producing a cut product is provided.

Further, in the fabric selection step, a plurality of fabrics are selected, each fabric having a positive rate of at least a predetermined value and minimizing an inventory quantity of the unit products.

Also, in the fabric selection step, a fabric can be selected such that the inventory amount of the unit product is minimized in preference to the production rate in each size.

Further, in the fabric selection stage, a fabric having a high rate of quality improvement among the fabrics that minimize the inventory amount can be selected.

In addition, the size of the unit product to be cut in the selected fabric may be determined together with the size of the unit to be cut.

Also, in the good product calculation step, the first positive conversion rate when the fabric is cut only as a unit product having the first size and the second good conversion rate when the unit is cut only as a unit product having a second size different from the first size Respectively.

Further, in the fabric selection step, when the second positive conversion rate is higher than the first production rate, the size of the unit product to be cut at the cloth may be determined as the second size.

When the second positive rate is higher than the first positive rate and the inventory quantity of the unit product having the first size is smaller than the inventory quantity of the unit product having the second size in the material selection step, May be determined to be the first size.

Also, the planned quantity of production may be the amount requested by the customer.

According to still another aspect of the present invention, there is provided a manufacturing method of a unit product, comprising: a good product calculation mode for calculating the number of good products and the quantity of good product of a unit product to be cut in each fabric, And a fabric selection mode in which one or more fabric members are selected based on the number of good products so that the number of good products of the unit product is equal to or greater than the production planned quantity.

Further, in the far-end selection mode, a fabric is selected which minimizes the inventory amount of the unit products among a plurality of fabrics having a positive rate higher than a predetermined value.

In addition, the production system of the cut product may further include an input unit for inputting a production plan quantity for the unit product, and an output unit for displaying one or more fabrics to be cut when a production plan quantity for the unit product is input.

Further, the number of good pieces and the quantity of good quality of the unit products to be cut through each fabric through the output unit may be displayed.

Further, in the material selection mode, a fabric that minimizes the inventory amount of the unit product in preference to the normalization rate may be selected.

Also, the planned quantity of production may be the amount requested by the customer.

According to still another aspect of the present invention, there is provided a defect inspection mode for inspecting defects on a fabric, and a defect inspection mode for inspecting defects on a fabric, And a quantity of production plan for a unit product of size are inputted, the number of good products of the unit product in each size based on the number of good products and the quantity of production plan calculated for each unit product size And a fabric selection mode in which a plurality of fabrics are selected such that the number of fabrics is equal to or greater than a production planned quantity.

Also, in the material selection mode, the size of the unit product to be cut is determined together with the size of the unit product to be cut in the selected cloth, and a fabric is selected so that the inventory amount of the unit product is minimized in priority to the quality improvement rate.

Also, the planned quantity of production may be the amount requested by the customer.

As described above, a production method of a cut product and a production system of a cut product according to an embodiment of the present invention have the following effects.

For each fabric, the number of good parts and the quantity of good parts of the unit product to be cut can be calculated based on the defect information of the fabric. Further, the number of good parts and the percentage of good quality of each unit product can be calculated. Therefore, it is possible to accurately calculate the good article information of the fabric, and a foundation plan can be established based on this.

In addition, a foundation plan can be established based on the production plan quantity (customer demand quantity) and defect information of the fabric. Therefore, the inventory amount can be minimized and the productivity can be improved.

1 is a plan view of a fabric associated with the present invention.
2 is a plan view for explaining fabrics and strips related to the present invention.
3 is a plan view for explaining a cloth and defect distribution map related to the present invention.
4 is a flowchart showing a production method of a cut product related to the first embodiment of the present invention.
5 is a block diagram showing a production system of a cut product related to an embodiment of the present invention.

Hereinafter, a production method of a cut product and a production system of a cut product according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, the same or corresponding reference numerals are given to the same or corresponding reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown in the drawings are exaggerated or reduced .

2 is a plan view for explaining a fabric 10 and strips 11, 12, 13 related to the present invention, and Fig. 3 is a plan view of a fabric 10 related to the present invention (10) and a defect distribution map (30).

In this document, the "fabric" to be cut is a base material on a film (or sheet), which is included in the base material if it has a relatively larger size than before the cutting. In addition, in the present invention, the kind and laminated structure of the fabric 10 are not particularly limited. The fabric 10 can be selected from an optical member or a protective member on a film (or sheet), for example, applied to an electric or electronic product or the like. The fabric 10 may be selected from optical members applied to a more specific example, a display device such as a TV or a monitor. Further, the fabric 10 includes a single layer body and / or a laminate body.

In one example, the fabric 10 may be selected from a polarizer. At this time, the polarizing plate may have a laminated structure including a polarizer and a polarizer protective layer formed on the polarizer. The polarizer may be selected from, for example, a polyvinyl alcohol (PVA) film or the like which is dyed and stretched. The polarizer protective layer may be selected from, for example, triacetylcellulose (TAC) film and attached to both sides of the polarizer through an adhesive. In addition, the polarizing plate may have a laminated structure further comprising a protective film and / or a release film formed on the polarizer protective layer.

The fabric 10 may be taken out in a state of being wound around a roll, for example, in a strip shape. The width X and the length Y of the fabric 10 are not limited. The fabric 10 may have a width X of, for example, 40 mm to 2,500 mm and a length Y of 1,000 cm to 3,000 m. Specifically, the fabric 10 has a length Y larger than the width X.

Further, in the present invention, the fabric 10 to be cut includes the defect d, and / or the defect d. The defect (d) is an unfavorable defect point in the product, which may be formed in the manufacturing process of the fabric 10 and / or the winding process. Defects include, for example, foreign matter, contamination, twisting, scratches, and / or bubbles.

In the accompanying drawings, "*" represents defect (d). The fabric 10 may have one or more of the above-mentioned defects (d), but in the drawings, the type of defects (d) is not taken into account and is denoted by "* ".

On the other hand, in this document, "cutting" can be used to mean one or more selected from among "slitting cutting" and "unit cutting ". In the present invention, the term "slitting cutting" means that the raw material 10 is cut into a strip-shaped semi-finished product by cutting the raw material 10 in the length direction Y, (Y) direction and the width (X) direction and cut into a unit product. At this time, in the present invention, the band-shaped semi-finished product obtained through the slitting cut is referred to as a 'strip', and the cut product obtained through the unit cut is referred to as a 'single product' or a 'unit product'.

The single piece is a single piece of finished product having a length and width smaller than the raw fabric 10, which may have the shape of, for example, a quadrangle. 2, the strips 11, 12 and 13 are band-shaped semi-finished products having a width smaller than that of the fabric 10, which can be cut into a single piece through a unit cut have. 2 shows a state in which the fabric 10 is slit-cut and divided into a first strip 11, a second strip 12, and a third strip 13. As shown in FIG. Further, each of the strips 11 to 13 may be cut along the cutting line 20 on the fabric 10. The width X-Z of the cutting line 20 may be determined to be smaller than the width X of the fabric. The width (X-Z) of the cutting line 20 may be substantially the same as the sum of the widths of the strips 11 to 13.

 In the present invention, the cutting method is not particularly limited. The cutting method may be such that the cloth 10 can be divided into at least one piece and / or strips 11, 12, 13. The cutting may be performed, for example, through a metal knife, a jet water knife and / or a light source, and the light source may be a laser beam or the like.

In this document, "area yield" means that the total area of the cut products obtained after the cutting is calculated by dividing the total area of the cutting front fabric 10 by the total area. The area yield can be expressed as a percentage (%) as usual. At this time, the cut product is selected from the single product and / or the strips 11, 12 and 13. The total area of the cut products is calculated as the area of one cut product x the number of cut products produced. The " yield rate " is calculated by dividing the total area of the good products among the cut products obtained after the cutting, by the total area of the cutting front fabric 10. The positive conversion rate can be expressed as a percentage (%) as usual. On the other hand, the area yield and the yield rate may be used in the same concept.

In this document, the term "size" means at least one selected from the width, length, area, and diagonal length of the fabric 10 or the cut product (piece and / or strip).

In the present invention, "size" is used in the same meaning unless otherwise stated in the following embodiments. Further, "inch" representing the length may mean diagonal length as is well known. The inch may refer to a diagonal length, for example, when the product is a square single piece such as a polarizing plate.

The defect d of the fabric 10 can be inspected by the inspector or defect inspection portion 600 (see Fig. 5) constituting the cutting system 100 (see Fig. 5). The defect inspecting unit may be arranged to inspect the defect (d) by an automatic scanning method through an image. The defect information (or defect distribution map) of the fabric inspected by the defect inspection unit 100 may be stored in the defect information storage unit 400. In addition, the defect information of the fabric 10 can be displayed on the screen through the output unit 500 (see FIG. 5).

The determination information includes the position (distribution), type, size, and / or number of the defect (d), and may be displayed on the output unit in the xy coordinate in the case of the position (distribution) of the defect (d). The inspection method and display method of the defect (d) are not particularly limited, and they can be carried out by a conventional method, for example. In this manner, a defect distribution map of the fabric 10 is generated based on the determination information of the fabric. Generation of the defect distribution map 30 of the fabric 10 may be performed through a control unit constituting the cutting system.

The control unit may divide the defect distribution map 30 of the fabric 10 along the cutting line 20 of the fabric 10 and store the divided defect distribution maps. As such, the segmented defect distribution map can be continuously used throughout the subsequent process (or subsequent mode).

Also, referring to FIG. 3, the fabric 10 may include a marking part 15. Specifically, the fabric 10 may be provided with one or more marking portions 15 that can distinguish between the left side and the right side. In this document, the marking unit 15 can be provided to be able to distinguish the direction of the fabric 10. The marking portion 15 is preferably provided so as to be able to distinguish at least the left and right sides of the fabric 10.

 The marking portion 15 may be formed along the length Y direction of the fabric 10 at at least one of the left end portion DS and the right end portion OS of the fabric 10. Here, each end portion OS (DS) means the edge of the fabric 10, which may mean a width within 2 cm from the left or right end of the fabric 10, for example. At this time, the width of the marking portion 15 is not limited. For example, the marking portion 15 may have a width of from 0.01 mm to 2 cm, from 0.02 mm to 1.5 cm, from 0.1 to 1 cm, or from 0.5 mm to 0.5 cm. In addition, the marking portion 15 may be formed continuously or discontinuously along the length (Y) direction of the fabric 10. 3 shows an embodiment in which the marking portions 15 are continuously formed in a straight line along the length (Y) direction of the fabric 10.

The marking unit 15 is not limited as long as it can be recognized by the naked eye and / or the identification device. The marking portion 15 may include at least one of a printing portion formed by printing, a notch portion formed by a thickness step, and a perforation formed by perforation, for example. For example, the printing unit may be provided by printing a color material. Further, the notch portion is not limited as long as it has a thickness step, and it can be selected from an osmosis treatment portion formed by pressurization, a half cutting portion formed by half cutting, and the like. Also, the perforations may be discontinuously formed.

The marking portion 15 may be formed before the defect 10 is inspected for defects or after defect inspection of the fabric 10 is performed. In one embodiment, the marking portion 15 may be formed after defect inspection of the fabric 10 is performed.

The marking portion 15 improves at least cutting productivity of the fabric 10. As mentioned above, the fabric 10 can be continuously changed between the left and right sides while repeating the unwinding and winding after the defect inspection is performed. At this time, the marking unit 15 can distinguish the direction of the fabric 10 even when the left and right sides are changed by repeating the unwinding and winding.

4 is a flowchart showing a production method of a cut product related to the first embodiment of the present invention.

A production method of a cut product related to the first embodiment is a good product calculation step S101 (S101) for calculating the number of good products and the quantity of good quality of a unit product to be cut in each of the fabrics 10 based on defect information on the cloth 10 ).

Also, the production method of the cut product may include a fabric selection step of selecting one or more fabrics so that the number of good products of the unit product is equal to or more than the production planned quantity, based on the production planned quantity for the unit product and the calculated good product number S102). In this document, the planned quantity of production can be customer requested quantity.

On the other hand, through the good product calculation step S101 based on the defect information on the fabric 10, the number of good products to be cut in each fabric and the good production rate can be respectively calculated.

For example, when the first fabric is cut into a product A, the number of good products and the yield rate can be respectively calculated. Further, when the first fabric is cut into the B product, the number of good products and the yield rate can be calculated respectively.

Here, A and B products are unit products of different sizes. Particularly, when the first fabric is cut into the product A, the number of good products and the product quality ratio may be different from each other in the number of good products and the yield rate when the first fabric is cut into the B product. That is, even if the same fabric is used, the number of good products and the yield of the good can be changed depending on the size of the unit product to be cut.

Likewise, when the second fabric is cut into the product A, the number of good products and the yield rate can be respectively calculated, and when the second fabric is cut into the product B, the number of good products and the yield rate can be calculated. In summary, the number of good products and the yield rate can be calculated at the time of cutting into a specific product (product A or product B) with respect to the holding fabric.

The fabric selection step (S102) is performed on the basis of the production plan quantity (customer demand quantity) and the calculated good quantity quantity for each unit product. In other words, the number of good products to be cut through one or more fabrics in order to meet customer needs should be more than the requested amount of customers.

At this time, in the fabric selection step, a fabric may be selected to minimize the inventory amount of the unit product.

Particularly, in the fabric selection step (S102), a fabric is selected which minimizes the inventory amount of the unit products out of a plurality of fabrics having the positive product ratio equal to or larger than a predetermined value. For example, the standardization rate of the fabric selection may be 70% or more, preferably 80% or more, and more preferably 85% or more. That is, a fabric may be selected which minimizes the inventory quantity of the unit product (the number of good products - the planned quantity of production) only among a plurality of fabrics with a positive product rate of a predetermined value or more.

Further, in the fabric selection step, a fabric may be selected such that the quantity of the product of the unit product is minimized in priority to the production rate. For example, if the number of production plans for product A is 100, the number of good products when cutting first fabric to A product is 130, the yield rate is 88%, and when cutting second fabric to A product The number of good products is 110, and the yield rate can be 86%. At this time, when the positive rate is prioritized, the first fabric may be selected. However, in the present invention, the stock quantity is given priority over the yarn yield in the yarn selection criteria, and the second yarn that minimizes the stock amount can be selected.

In summary, in order to reduce inventory, a fabric may be selected that minimizes the difference between the number of good pieces to be cut and the planned quantity (customer's required quantity).

Further, in the material selection step (S102), a fabric having a high quality ratio among the fabrics that minimize the inventory amount can be selected.

In the method of producing a cut product according to the second embodiment of the present invention, when each fabric is cut according to the size of the unit product based on the defect information on the raw fabric, And calculating a good product.

The production method of the cut product related to the second embodiment is characterized in that the number of good pieces of the unit product in each size is calculated on the basis of the production plan quantity (customer demand quantity) The number of the fabrics to be produced is more than the production planned quantity.

Further, in the fabric selection step, a plurality of fabrics are selected, each fabric having a positive rate of at least a predetermined value and minimizing an inventory quantity of the unit products.

The required quantity of the customer can be calculated according to the size of the unit product, for example, 37 inches (product B) and 42 inches (product A). At this time, the number of good items and the quantity of good product according to the size of the unit product can be calculated for each fabric, as described in the first embodiment.

At this time, a plurality of fabrics are selected so that the number of good products of the unit products is greater than or equal to the number required by the customer on the basis of the number of good products calculated for each customer's required quantity and size according to the size of the unit product. For example, the number of good parts for a 37-inch unit and the number of good parts for a 42-inch unit should be at least the customer's demand for 37-inch and the customer's demand for 42-inch, respectively.

Further, in the cloth selection step, the cloth may be selected so that the stock amount of each unit product is minimized. Also, in the fabric selection step, a fabric can be selected such that the inventory amount of the unit product is minimized in preference to the production rate in each size. Further, in the fabric selection stage, a fabric having a high rate of quality improvement among the fabrics that minimize the inventory amount can be selected.

On the other hand, the size of the unit product to be cut in the selected fabric can be determined together with the size of the unit. For example, the first fabric may be cut into the A product, and the second fabric may be determined to be cut into the B product, depending on the customer's required quantity, the number of good items, and the good product rate.

Also, in the good product calculation step, the first positive conversion rate when the fabric is cut only as a unit product having the first size and the second good conversion rate when the unit is cut only as a unit product having a second size different from the first size Respectively. Further, in the good product calculation step, the third positive product ratio can be calculated when the unit product having the first size and the unit product having the second size are combined and cut.

For example, the first positive rate and the number of good articles of the A product can be calculated when the first fabric is cut only by the A product of the first size. In addition, the second positive conversion rate and the number of good products of the B product when the first fabric is cut only to the B product of the second size can be calculated. In addition, when the first fabric is cut by a combination of the A product and the B product, the third good yield rate, the good product number of the A product, and the good product number of the B product can be calculated.

In this case, when the second positive rate is higher than the first positive rate in the fabric selection step, the size of the unit product to be cut in the corresponding fabric (first fabric) may be determined as the second size (product B).

Alternatively, in the material selection step, the second positive conversion rate is higher than the first positive conversion rate, and the stock amount of the unit product (product A) having the first size is smaller than the inventory amount of the unit product having the second size (product B) , The size of the unit product to be cut in the corresponding fabric (first fabric) may be determined as the first size. In other words, it is more important to customize the quantity required by the customer and to minimize the quantity of stocks even if the product yield is somewhat low.

Hereinafter, a production system of a cut product for performing the production method of the cut product will be described in detail with reference to the accompanying drawings.

5 is a block diagram showing a production system 100 of a cut product related to an embodiment of the present invention.

The production system 100 of the cut product includes a good product calculation mode for calculating the number of good products and the good production rate of the unit products to be cut in each of the fabrics on the basis of the defect information on the fabric. Further, the production system 100 of the cut product may further include one or more fabrics (not shown) for making the number of good products of the unit products equal to or more than the production planned quantity, based on the production planned quantity (customer required quantity) And a raw material selecting mode for selecting a raw material.

At this time, the fabric selection mode is set such that a fabric that minimizes the inventory amount of a unit product among a plurality of fabrics having an adequate production rate of a predetermined value or more is selected. The production system 100 of the cut product may further include an input unit for inputting a production plan quantity for a unit product and an output unit for displaying one or more fabrics to be cut when a production plan quantity for the unit product is inputted . Further, the number of good pieces and the quantity of good quality of the unit products to be cut through each fabric through the output unit may be displayed. As described above, in the material selection mode, a fabric can be selected that minimizes the inventory amount of the unit product in preference to the productivity rate.

In addition, the production system of the cut product related to another embodiment of the present invention is characterized in that, when each fabric is cut according to the size of the unit product on the basis of the defect inspection mode and the defect information for inspecting defects on the fabric, And a good product calculation mode for calculating the number of good products and the good production rate of each unit product. In addition, when a production plan quantity (customer demand quantity) for a unit product of size is inputted, a production system of a cut product is divided into a unit product size and a unit product size, And a fabric selection mode in which a plurality of fabrics are selected so that the number of good products is equal to or greater than the production planned quantity.

At this time, in the far-end selection mode, a plurality of fabrics are selected, each of which has a positive rate higher than a predetermined value and minimizes an inventory quantity of the unit product. As described above, in the far-end selection mode, the sizes of the unit products to be cut are determined together with the sizes of the unit products to be cut at the selected sizes.

Referring to FIG. 5, a production system 100 of a cut product may include a good product calculating unit 200 and a cutting unit 300. The production system 100 of the cut product may include a product information input unit 110, a far-end information input unit 120, and a customer required quantity input unit 130. In addition, the production system 100 of the cut product may include a defect inspection unit 600 and a defect information storage unit 400.

The product information input unit 110 may input product information. At this time, the information of the product includes the size of each product.

For example, when the cloth 10 is cut into n products, the sizes of the n products to be cut are input to the product information input unit 110. Here, n products (n? 2) are as described above. For example, when there are a plurality of strip products having the same size (area or inch) or different products as the product to be cut, the size of each strip product is input and stored in the product information input unit 110 . In addition, the quantity of the unit product according to the size can be inputted to the customer demand quantity input unit 130, respectively.

The raw information of the raw fabric 10 is input to the raw fabric information input unit 120. In the far-end information input unit 120, the size of the raw material 10, for example, may be input as far-end information. More specifically, at least one selected from the width X and the length Y of the fabric 10 may be input to the fabric information input unit 120.

The defect information of the fabric 10 is stored in the defect information storage 400. The defect information may be, for example, the distribution (position) and / or the type of the defect (d) of the defect (d) present in the fabric 10.

The defect information may be inspected by, for example, a defect inspection apparatus (not shown) and input to the defect information storage unit 400. [ In addition, the defect information may be displayed on an x-y coordinate through a monitor (not shown). The defect information storage unit 400 may store defect distribution maps 30 and defect distribution densities 40 and 50 along at least one of a longitudinal direction and a width direction of the fabric 10 .

The good product calculating unit 200 calculates the number of good products and the quantity of good products, that is, the area yield according to the distribution of defects (d), based on the distribution of defects (d) stored in the defect information storage unit 400. The good product calculating unit 200 calculates the number of good products and the quantity of good products according to the cutting line in consideration of the defect (d) distribution.

In addition, the production system 100 of the product at the time of cutting includes an input unit 130 for inputting a customer's required quantity for a unit product, and an output unit 130 for displaying one or more raw materials to be cut, 500). In addition, the number of good pieces and the quantity of good quality of the unit product to be cut through each fabric can be displayed through the output unit 500, respectively.

For example, the output unit 500 may include a first display area, a second display area, and a second display area, each of which displays a demanded number of customers, a number of good items, and a positive rate of each unit product size (for example, inch) And a third display area for selection of the fabric.

On the other hand, the cutting unit 300 can cut the fabric 10 along an imaginary cutting line that maximizes the area efficiency and the yield rate based on the results calculated by the good product calculating unit 200. [ The cutting unit 300 includes at least a cutting device.

The above-described cutting device can be configured as usual, for example. The cutting device may include, for example, a supporting means for supporting the fabric 10 and a cutting means for cutting the fabric 10.

The support means may comprise at least one selected from, for example, a conveying conveyor, a roll, and a support plate.

The cutting means may have a structure including at least one selected from a metal knife, a jet water knife, a light source (laser beam irradiator, etc.), and the like.

The cutting unit 300 may include a first cutting unit for obtaining a plurality of strips 11, 12, and 13 by slitting and cutting the raw material 10 in the longitudinal direction.

In addition, the cutting unit 300 may include a second cutting unit for cutting the obtained strips 11, 12, 13 in the width direction to obtain a unit product.

Here, the defect inspection of the fabric 10 may be performed through the defect inspection unit 600. The defect information of the fabric 10 may be stored in the defect information storage unit 400. [

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

10: Fabric
20: Cutting line
30: Defect distribution map
100: Production system of foundation products
130: Customer demand quantity input unit
200: good product calculating section
400: defect information storage unit
500: Output section
600: defect inspection part

Claims (20)

A good product calculation step of calculating the number of good products and the good production rate of each unit product to be cut in each fabric based on defect information on the fabric; And
And a fabric selection step of selecting at least one fabric so that the number of good products of the unit product is equal to or more than the production planned quantity based on the production plan quantity for the unit product and the calculated good quantity number,
Wherein the fabric selection step selects a fabric that minimizes an inventory amount of a unit product among a plurality of fabrics having a specific product rate of a predetermined value or more. The method according to claim 1,
In the step of selecting fabrics, a fabric is selected so that the quantity of the products of the unit products is minimized in priority to the production rate. 3. The method of claim 2,
Wherein a fabric having a high productivity rate is selected from fabrics that minimize the inventory amount in the fabric selection stage. The method according to claim 1,
Wherein the production plan quantity is a customer demand quantity. A good product calculation step of calculating the number of good products and the good production rate according to the sizes of the unit products, when each of the fabrics is cut according to sizes of the unit products, based on defect information on the fabric; And
And a fabric selection step of selecting a plurality of fabrics, each of which has a number of good products of the unit product equal to or more than a production planned quantity, based on the number of good products calculated by the production plan quantity and the size according to the size of the unit product, ,
Wherein the plurality of fabrics are selected in the fabric selection step so that the product yield of each size is at least a predetermined value and the inventory amount of the unit products is minimized. 6. The method of claim 5,
In the fabric selection step, a fabric is selected so that the quantity of the unit product is minimized in priority to the production rate in each size. 6. The method of claim 5,
Wherein a fabric having a high productivity rate is selected from fabrics having minimum inventory levels in a fabric selection stage. 6. The method of claim 5,
Wherein the size of the unit product to be cut is determined together with the selected fabric in the step of selecting the fabric. 9. The method of claim 8,
In the good product calculation step, the first positive conversion rate in the case of cutting the fabric only to the unit product having the first size and the second positive conversion rate in the case of cutting only the unit product having the second size different from the first size are calculated Wherein the method comprises the steps of: 10. The method of claim 9,
Wherein the size of the unit product to be cut at the fabric is determined to be the second size when the second yarn yield ratio is higher than the first yarn yield percentage in the yarn selection step. 10. The method of claim 9,
In the fabric selection step, when the second positive conversion rate is higher than the first positive conversion rate and the stock amount of the unit product having the first size is smaller than the stock amount of the unit product having the second size, the size of the unit product Is determined to be a first size. 6. The method of claim 5,
Wherein the production plan quantity is a customer demand quantity. A good product calculation mode for calculating the number of good pieces and the good production rate of the unit products to be cut in each of the fabrics based on defect information on the fabric; And
A raw material selection mode in which one or more raw materials are selected so that the number of good products of the unit product is equal to or more than the production planned quantity based on the production plan quantity for the unit product and the calculated good quantity number,
In the fabric selection mode, a fabric is selected which minimizes the stock quantity of a unit product among a plurality of fabrics with a normalization rate of a predetermined value or more. 14. The method of claim 13,
Further comprising an input unit for inputting a production plan quantity for the unit product, and an output unit for displaying one or more fabrics to be cut when a production plan quantity for the unit product is input. 14. The method of claim 13,
Wherein the number of good pieces and the quantity of good quality of the unit products to be cut through each fabric are displayed through the output unit. 14. The method of claim 13,
In the fabric selection mode, a fabric is selected to minimize the stock quantity of the unit product in preference to the productivity rate. 14. The method of claim 13,
Wherein the production plan quantity is a customer demand quantity. A defect inspection mode for inspecting defects on the fabric;
A good product calculation mode for calculating the number of good pieces of the unit product and the good production rate according to the size when each of the fabrics is cut according to the size of the unit product based on the defect information; And
When a production plan quantity for a unit product by size is input, a plurality of fabrics each having a number of good products of a unit product equal to or more than a planned quantity of production, in each size, based on the number of good products and the quantity of production plan, And a far-end selection mode for selecting the far-
Wherein a plurality of fabrics are selected to minimize an inventory amount of a unit product in a raw material selecting mode in which the quantification rate of each size is equal to or larger than a predetermined value. 19. The method of claim 18,
In the fabric selection mode, the sizes of the unit products to be cut at the selected fabric are determined together,
A production system for a cut-off product in which a fabric is selected such that the quantity of the unit product is minimized in priority to the quantity of the product in each size. 19. The method of claim 18,
Wherein the production plan quantity is a customer demand quantity.

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