KR20160007429A - Method and system for producing cutting product - Google Patents
Method and system for producing cutting product Download PDFInfo
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- KR20160007429A KR20160007429A KR1020150098146A KR20150098146A KR20160007429A KR 20160007429 A KR20160007429 A KR 20160007429A KR 1020150098146 A KR1020150098146 A KR 1020150098146A KR 20150098146 A KR20150098146 A KR 20150098146A KR 20160007429 A KR20160007429 A KR 20160007429A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 224
- 238000000034 method Methods 0.000 title claims description 95
- 239000004744 fabric Substances 0.000 claims abstract description 228
- 238000004519 manufacturing process Methods 0.000 claims abstract description 56
- 230000007547 defect Effects 0.000 claims description 64
- 238000009826 distribution Methods 0.000 claims description 16
- 239000000047 product Substances 0.000 description 282
- 239000002994 raw material Substances 0.000 description 10
- 238000007689 inspection Methods 0.000 description 7
- 239000011241 protective layer Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 229920002284 Cellulose triacetate Polymers 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
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- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/04—Manufacturing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production method of a cut product and a production system of the cut product and more particularly to an area yield calculation step and an area yield step of calculating the number of strips and the strip width, And a cutting step of slitting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated in the step of cutting the strip to obtain a plurality of strips.
Description
The present invention relates to a production method and a production system of a cut product.
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, if there is a scratch on the roll, a periodic defect may occur in a region contacting with the roll due to the nature 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 Laid-Open 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.
On the other hand, the business purpose of the product supplier (manufacturer) can be regarded as profit. However, the cutting method according to the prior art does not consider profit. Specifically, the cutting method according to the prior art is cut by simply considering the area yield of the unit product in order to minimize the amount of scrap to be discarded. However, this has the problem that the profitability is low in some cases.
The present invention provides a production method of a cut product and a production system of a cut product that can maximize the area yield of the 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 that can cut a fabric based on at least one of area yield and profitability.
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 calculate a profitable cutting method.
According to an aspect of the present invention, there is provided an area yield calculating step of calculating a number of strips and a width of a strip such that an area yield is equal to or greater than a predetermined value when a fabric is cut. And a cutting step of slitting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated in the area yield step to obtain a plurality of strips.
According to still another aspect of the present invention, there is provided a method of fabricating a yarn, comprising: an area yield calculating step of calculating an area yield of a raw fabric varying according to a cutting method of a fabric; A profit calculating step of calculating a profit of the product which changes according to the cutting method of the fabric; And a cutting step of cutting the fabric in a cutting method based on at least one of the calculated area yield and the calculated profit of the product.
According to still another aspect of the present invention, there is provided an area yield calculating unit for calculating the number of strips and the width of the strips so that the area yield is equal to or greater than a predetermined value at the time of cutting the fabric, There is provided a production system for a cut product which comprises a cutting section for slitting and cutting a raw fabric in the longitudinal direction by the number and the width of the strip to obtain a plurality of strips.
INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to provide a method of producing an improved cut product and a production system of the cut product.
Also, the number of strips and the width of the strips that can maximize the area yield can be calculated to perform the slitting cutting.
Also, the profitability of the product supplier (manufacturer) can be improved.
1 is a plan view showing a fabric.
2 is a plan view for explaining a cutting method of a fabric according to an embodiment of the present invention.
3 to 5 are plan views for explaining a method of cutting a fabric according to another embodiment of the present invention.
6 is a plan view for explaining a production method of a cut product according to an embodiment of the present invention.
7 is a plan view for explaining a production method of a cut product according to another embodiment of the present invention.
8 to 10 are plan views for explaining a production method of a cut product according to still another embodiment of the present invention.
11 is a configuration diagram showing a production system for a cut product according to an embodiment of the present invention.
12 is a configuration diagram showing a production system for a cut product according to still another 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 .
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 this document, the kind of the
In one example, the
The
Further, in this document, the
In the accompanying drawings, "*" represents defect (d). The
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 document, the term "slitting cutting" means that the
In addition, the single item is a single end product having a length and a width smaller than the
In this document, the cutting method is not particularly limited. The cutting method may be such that the
On the other hand, in this document, the "area yield" means that the total area of the cut products obtained after cutting is calculated by dividing the total area of the cutting
In this document, "size" means one or more selected from the width, length, area, and diagonal length of the
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention, detailed description of known functions and configurations will be omitted. In the embodiments illustrated below, the same terms and reference numerals denote the same functions. In addition, since the parts described in any one embodiment are used in accordance with the other embodiments, explanations of parts overlapping as much as possible are omitted. For example, when the portion described in the first embodiment is not described in the second embodiment, the second embodiment includes the portion described in the first embodiment. In addition, if there is a part which is not described in the first embodiment, the part described in the second embodiment is included.
The method of producing a cut product according to an embodiment of the present invention includes an area yield calculating step of calculating the number of strips and the width of the strip such that the area yield is equal to or greater than a predetermined value at the time of cutting the raw fabric. The production method of the cut product includes a cutting step of slitting the fabric in the longitudinal direction by the number of strips calculated in the area yield step and the width of the strip to obtain a plurality of strips.
Also, the area yield step can be performed by calculating the number of strips and the width of the strip such that the S value according to the following
[Formula 1]
In the
In addition, the cutting step may further comprise arranging the position of each strip based on the defect distribution of the fabric.
Further, the area yield may be selected according to various criteria such as 80% or more, 90% or more, or 95% or more, for example. Further, the area yield calculating step can be performed by calculating the number of strips and the width of the strips that maximize the area yield.
Hereinafter, a method of producing a cut product will be described in detail with reference to the accompanying drawings.
One
As described above, with respect to the
In the
[Formula 5]
S1 = (X-Z) Y
In the general formula 5, X is the total width of the
The area yield can be maximized by setting the S1 value of the general formula 5 to the maximum value {Max [(X-Z) Y]} in the
Specifically, the fabric cutting method of the present invention calculates the number of
The method for cutting a fabric according to the present invention includes: an area yield calculating step of selecting a cutting method in which an S value according to the following
[Formula 1]
In the
In the area yield calculation step, the S value of the
It is assumed that the
In the case of slitting and cutting the
[Formula 6]
X = S2 - (A W N A + N B + W B W C N C + W D + W D N E N E)
Table 1 below illustrates some of the possible combinations. In Table 1 below, the area yield for each case is assumed as an example. "A x 1 + B x 2" means a case where one row of product A and two rows of product B are combined, and the rest are the same. As assumed in Table 1 below, in all combinations, the best area yield can be obtained in case of cutting one line of product A and two lines of product B (case 1).
The cutting type (case 1) having the highest area yield can be calculated by the general formula (6). Therefore, when cutting the
Fig. 2 shows the above-mentioned optimum cutting form. In Fig. 2, W A is the width of the A product, and W B is the width of the B product. That is, FIG. 2 is a sectional view showing a cut shape in which the area yield is maximized during the slitting cutting in the length (Y) direction with respect to the
The above general formula (6) can be expressed by the general formula (1). In this case, the
Therefore, the area yield can be maximized by calculating the cutting form that minimizes the S value according to the general formula (1). Specifically, the S value of the general formula (1) is calculated while varying the number of strips (11) (12) (13) and / or the number of strips (11) Of the calculated S values, it is possible to obtain the maximum area yield when the number of the
Hereinafter, an embodiment capable of maximizing the quality (good quality) in consideration of the defect d of the
As exemplified above, it is assumed that the cutting form that maximizes the area yield with respect to the
Referring to FIG. 3 to FIG. 5, the yield rate may vary depending on where one row of product A and two rows of product B are located. In the present invention, the "positive product rate" means the area yield in consideration of quality improvement.
As shown in Figs. 3 to 5, since the distribution of defects (d) may be different for each line, the one product A and the two products B are cut to have the highest yield rate. More specifically, in this embodiment, as described above, when the cutting form that maximizes the area yield is determined, the
FIGS. 3 to 5 illustrate the assumption of the flatness ratio according to the arrangement of one line of product A and two lines of product B. FIG. 3 to 5, the optimal cutting form may be the arrangement of FIG. That is, when cutting is performed in the order of one row of the A product, one row of the B product, and one row of the B product from the left side, the best area yield and the good yield can be obtained.
Further, the defect (d) can be inspected by the inspector or the defect inspection apparatus before the cutting. In the present invention, the inspection method of the defect (d), the dataization of the defect information, and the utilization thereof are not particularly limited, and this can be performed by a conventional method, for example.
As described above, in order to minimize the amount of scrap to be discarded, the area yield of the unit product obtained after the cutting can be taken into consideration. However, since the area yield is high, it does not necessarily have a high profit. For example, the area and price of a product are not necessarily proportional.
For example, if the product is cut into "A" with an area of "A" for a certain fabric, the area yield is 95%, and the product 2A having an area twice as large as the "A" , It is assumed that the area yield is 93%. At this time, when the price of the product A is 1 won, the price of the product 2A is not necessarily 2 won, which is more expensive than 2 won in most cases. In this case, it is advantageous from profitability that the product supplier cuts the product to the size of "Product 2A" rather than "Product A". That is, in order to select the cutting method (method), it may be desirable that both the area yield and the profitability are considered together.
A method of producing a cut product in accordance with another embodiment of the present invention includes calculating an area yield calculating step of calculating an area yield of a fabric varying in accordance with a cutting method of a fabric and calculating a profit of a product that changes according to a cutting method of the fabric And a profit calculation step. In addition, the production method of the cut product includes a production step of the cut product including a cutting step of cutting the fabric in a cutting method based on at least one of the calculated area yield and the calculated profit of the product.
Here, the cutting step may be such that even if the area yield calculated by the first cutting method is lower than the area yield by the second cutting method, the profit of the product calculated by the first cutting method is smaller than the yield of the product calculated by the second cutting method If it is large, it can be performed by cutting the fabric with the first cutting method.
In addition, the cutting step can be performed by cutting the cloth in a cutting method in which the profit of the product calculated in the profit calculating step shows the maximum value.
The product to be cut may be a single piece obtained by cutting the raw fabric in the longitudinal direction and the width direction, respectively, or a band-shaped strip obtained by cutting the raw fabric in the longitudinal direction.
In addition, the profit of the product can be calculated by the following formula 2.
[Formula 2]
In the general formula 2, n is the number of products to be cut, and P is the price of each product cut.
Alternatively, the profit calculation step may be performed based on the following general formula (3). In the cutting step, a plurality of strips are obtained by slitting the fabric in the longitudinal direction according to a cutting method in which the value of M is the maximum, and a step of cutting the cut plural strips in the width direction to obtain a single product .
[Formula 3]
In the above general formula 3, n is the number of strips, T is the number of individual articles produced in each strip, and P is the price of the individual articles produced in each strip. Also, the value of M can be calculated by varying the width of the strip and / or the number of strips. In addition, the width of the strip can be set equal to the width or length of the single article. In addition, the step of obtaining a plurality of strips may further include the step of arranging the positions of the respective strips in accordance with the defect distribution of the fabric.
On the other hand, the profit calculating step may be performed based on the following general formula (4).
[Formula 4]
Where m is the number of fabrics, n is the number of strips produced at each fabric, T is the number of individual articles produced in each strip and P is the price of the individual articles produced in each strip.
Here, the cutting step may include a fabric selecting step of selecting a fabric according to a cutting method in which the value of R is the maximum value; A step of slitting and cutting the selected fabric in the longitudinal direction to obtain a plurality of strips, and a step of cutting each of the plurality of strips obtained in the width direction to obtain a single product.
Further, the R value can be calculated while varying the width of the strip and / or the number of strips. In addition, the width of the strip can be set equal to the width or length of the single article. In addition, the step of obtaining a plurality of strips may further include the step of arranging the positions of the respective strips in accordance with the defect distribution of the fabric.
On the other hand, the area yield calculation step may be performed by calculating the number of strips and the width of the strip such that the area yield is equal to or greater than a predetermined value, and the area yield calculation step is performed in the same manner as described with reference to Figs. 2 to 5 .
A method of producing a cut product for improving profitability includes: a profit calculating step of calculating a profit of a product that changes according to a cutting method of the
The profit calculating step can calculate the profit of the product that changes according to the cutting method when the
In one example, the revenue of the product may be calculated via the following equation (2).
[Formula 2]
In the general formula 2, n is the number of products to be cut, and P is the price of each product cut.
In the profit calculating step, for example, when the
Hereinafter, with reference to Fig. 6, embodiments of the present embodiment will be described by taking, as an example, a case in which the
One
It is assumed that a
With respect to the
In case of cutting the
The ranking is different considering the profit as above. That is, as shown in Table 3, considering the profit, it is optimal to cut the product into a medium size B product (case 2). This is because, as mentioned above, the size (area or inch) of the product and the price are not necessarily proportional.
In this embodiment, it is cut considering the profit of each product (size) as described above. Specifically, in this embodiment, when the
For example, polarizers have different price (price) depending on size (area or inch). Further, the polarizing plate, when the size (area or inch) is doubled, the price exceeds twice. For example, in the case of a polarizer having a size of 55 inches, 47 inches and 42 inches, the price (sales price) differs for each inch, and a 55 inch polarizer may be twice as high as a 42 inch polarizer, for example. Based on this price (sales price), the profit for each product is calculated.
In this embodiment, the profit may mean a value obtained by subtracting the production cost of the product from the price of the product obtained after the cutting. Further, the price is a price at the time of cutting, which may be a sale price when a product to be cut is supplied to a consumer. In addition, the production cost may mean a cost including manufacturing cost of the
[Formula 7]
Revenue = P x N - Q
[Formula 8]
Revenue = P x N - (Q + R)
In the above general formulas 7 and 8, P represents the price (sales price) of one of the cut products, N represents the number of cut products produced by the cutting, Q represents the manufacturing cost (manufacturing cost) Represents the cutting costs incurred in the cutting process.
In addition, the profit can be calculated through a profit calculator, for example. At this time, price information according to the size of each product and manufacturing cost (manufacturing cost) of the
After calculating the profit for each product as above, we cut the product (size) with the highest profit from the calculated profit. For example, among products A, B, and C of Table 3, it is cut into a B product (medium size) having the highest profit. Accordingly, it can be matched to the business purpose of a product supplier (manufacturer) for profitability purposes.
On the other hand, when the defect (d) exists in the fabric (10), the defect (d) is avoided in order to obtain a good quality (good quality). Specifically, when the product (size) that maximizes the profit is determined according to the above method, the
Further, the defect (d) can be inspected by the inspector or the defect inspection apparatus before the cutting. In the present embodiment, the inspection method of the defect (d), the data conversion of defect information, and the utilization thereof are not particularly limited, and they can be performed by a conventional method, for example.
In addition, when the
In the first embodiment, the case where the
Figs. 2 and 7 illustrate two cases in which the cutting form is different. Fig. 2 shows a cut-off configuration maximizing the area yield, and Fig. 7 illustrates a cut-off configuration maximizing profitability.
Referring to Figs. 2 and 7, in the present embodiment, the
As described above, with respect to the
According to the second embodiment, a profit calculating step of selecting a cutting method in which an M value of the following general formula 3 represents a maximum value; A first cutting step of slitting the
[Formula 3]
In the general formula 3, n is the number of the
According to the present embodiment, it is possible to realize a cutting form having the highest profitability through the general formula (3). For the purpose of illustration, the following is exemplified.
In the
The area yield can be maximized by setting the S1 value of the general formula 5 to the maximum value {Max [(X-Z) Y]} in the
It is assumed that slitting cutting is performed with the products A, B, C, D and E with respect to the
Various combinations are possible for the
As described above, Table 1 exemplifies some of all possible combinations. In Table 1, the area yield for each case is assumed as an example. Also, as assumed in [Table 1], in the case of all combinations, it is possible to obtain the best area yield in case of cutting one line of product A and two lines of product B (case 1).
The cutting type (case 1) having the highest area yield can be easily calculated through the above general formula (1). Therefore, when cutting the
Fig. 2 shows the above-mentioned optimum cutting form. In Figure 2, W A is the width of the A product, W B is the width of the B product, and Z is the width at which it is lost. That is, FIG. 2 is a sectional view showing a cut shape in which the area yield in slitting cutting is maximized in the length (Y) direction with respect to the
Considering the area yield as above,
The ranking is different considering the profit as above. In other words, considering profit, it is best to cut 2 lines of product A and 1 line of product D (case 2). In case of showing the highest value in area yield (case 1), it can be ranked as the third place.
Fig. 7 shows the above-described cutting form. 7, W A is the width of the A product, and W D is the width of the D product. That is, FIG. 3 shows a case in which cutting is performed for two lines of product A and one line of product D at the time of slitting in the longitudinal direction with respect to the
The above general formula (3) can be applied to any n strips in all cases where the widths of the strips (11) (12) 13 are equal to or different from each other. In the general formula 3, P representing the price of the
Therefore, calculating the cutting type that maximizes the M value according to the general formula (3) can maximize profitability. Specifically, the M value of the general formula (3) is calculated while varying the width of the strip and / or the number of strips. Among the calculated M values, it is possible to obtain the best profitability by cutting the width of the
In the second embodiment, a case has been described in which one
According to a third aspect of the present invention, there is provided a production method of a cut product of the present invention, comprising: a profit calculating step of selecting a cutting method in which the R value of the following general formula (4) A fabric selection step of selecting a
[Formula 4]
M is the number of the fabric 10 (m? 2), n is the number (n? 2) of the
Specifically, a cutting method of maximizing the R value of the general formula (4) is selected. Selection of the cutting method is as described in the first embodiment and the second embodiment. In one example, based on the size of each
For example, suppose that there are three fabrics (Fabric R1, Fabric R2 and Fabric R3) and produce Fabric A, Fabric B, Fabric C, Fabric D, and Fabric E for these fabrics. The R value is calculated for each of the fabrics R1 to R3 while varying the width of the strip and / or the number of strips. In this case, for example, in the case of maximizing the R value of the general formula (3), the fabric R1 has two strips A and B and one strip C and one strip C and four strips D , And the fabric R3 is three strips of product B and two strips of product E, one of the cloths R1 to R3 is selected in consideration of production schedule and the like. If the selected fabric is the fabric R1, cut the fabric R1 into two strips of product A and one strip of product B. You can then select Fabric 2 and cut it into one strip of C and four strips of D.
As mentioned above, since the
In the present embodiment, a case where a quality of good quality (good quality) can be maximized in consideration of the defect (d) will be described. According to the present embodiment, in the cutting process, the fabric is cut by slitting the fabric with the number of strips calculated, and the positions of the strips are arranged according to the defect distribution to cut.
As in the second embodiment, it is assumed that the cutting type that maximizes the profitability with respect to the
Referring to FIGS. 8 to 10, the product yield may vary depending on where the two rows of product A and one row of product D are located. In the present invention, the "positive product rate" means the area yield in consideration of quality improvement.
As shown in Figs. 8 to 10, since the distribution of the defect (d) may be different for each line, the two products of the product A and the product of the product D are set to have the highest throughput rate and cut. More specifically, in the present embodiment, when the cutting mode that maximizes the profitability is determined in the second embodiment, the
FIGS. 8 to 10 illustrate the assumption of the flatness according to the arrangement of two lines of product A and one line of product D, respectively. At this time, among FIGS. 8 to 10, the optimum cutting form can be the arrangement of FIG. In other words, when the product is cut in the order of 1 product of A product, 1 product of A product and 1 product of D product from the left, it is possible to obtain the highest profitability / good product rate.
11 and 12, a production system for a cut product includes an area yield calculating unit 210 for calculating the number of strips and the width of the strip such that the area yield is equal to or greater than a predetermined value at the time of cutting the raw fabric, And a
In addition, the production system of the cut product may include a product information input unit 110 for inputting a price for each product to be cut, and a
Referring to FIG. 6, the production system of the cut product may include a far-end
The product information input unit 110 stores product information. At this time, the information of the product includes the size of each product. For example, when the
The raw information of the
The area yield calculating unit 210 calculates the area yields of the
The
The
On the other hand, the production system of the cut product may further include a defect
The defect information of the
The good
The
In addition, the
The
In addition, the good
In another embodiment of the present invention, the
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
11, 12, 13: strip
Claims (20)
And a cutting step of slitting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated in the area yield step to obtain a plurality of strips.
The area yield step is performed by calculating the number of strips and the width of the strip such that the S value according to the following general formula 1 has a minimum value:
[Formula 1]
Where X is the width of the fabric, n is the number of strips, and W is the width of each strip.
Wherein the S value is calculated by varying at least one of the number of strips and the width of the strip.
Wherein the width of the strip is set equal to the width or length of the unit product produced in each strip.
Wherein the cutting step further comprises arranging the position of each strip based on a defect distribution of the fabric.
A profit calculating step of calculating a profit of the product which changes according to the cutting method of the fabric; And
And a cutting step of cutting the fabric in a cutting method based on at least one of the calculated area yield and the calculated profit of the product.
The cutting step may be such that the yield of the product calculated by the first cutting method is larger than the yield of the product calculated by the second cutting method even if the area yield calculated by the first cutting method is lower than the area yield by the second cutting method Wherein the first cutting method is performed by cutting the fabric by a first cutting method.
The stage of the foundation is performed by cutting the fabric with a cutting method that represents the maximum value of the product calculated in the profit calculation stage.
Wherein the product to be cut is a single piece obtained by cutting the raw fabric in the longitudinal direction and the width direction respectively, or a strip-shaped strip obtained by cutting the raw fabric in the longitudinal direction.
Wherein the profit of the product is calculated by the following formula 2:
[Formula 2]
Where n is the number of products to be cut and P is the price of each cut product.
The profit calculation step is performed based on the following general formula (3)
The cutting step includes a step of slitting the fabric in a lengthwise direction in accordance with a cutting method in which the value of M is the maximum, obtaining a plurality of strips, and cutting the cut plurality of strips in the width direction to obtain a single product Production method of foundation products:
[Formula 3]
Where n is the number of strips, T is the number of individual articles produced in each strip, and P is the price of the individual articles produced in each strip.
Wherein the M value is calculated by varying the width of the strip and / or the number of strips.
Wherein the width of the strip is set equal to the width or length of the single piece.
Wherein the step of obtaining a plurality of strips further comprises the step of arranging the positions of the respective strips according to the defect distribution of the fabric.
The profit calculation step is performed based on the following general formula (4)
The cutting step includes a fabric selecting step of selecting a fabric according to a cutting method in which the value of R is the maximum value; Obtaining a plurality of strips by slitting the selected fabric in the longitudinal direction; And a step of cutting each of the obtained strips in the width direction to obtain a single product.
[Formula 4]
Where m is the number of fabrics, n is the number of strips produced at each fabric, T is the number of individual articles produced in each strip and P is the price of the individual articles produced in each strip.
The R value is calculated by varying the width of the strip and / or the number of strips.
Wherein the width of the strip is set equal to the width or length of the single piece.
Wherein the area yield calculation step is performed by calculating the number of strips and the width of the strip such that the area yield is equal to or greater than a predetermined value.
And a cutting section for slitting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated by the area yield calculating section to obtain a plurality of strips.
A product information input unit for inputting a price for each product to be cut; And
Further comprising a profit calculating section for calculating a profit according to the product based on the product-specific price inputted to the product information inputting section.
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KR20190042924A (en) | 2017-10-17 | 2019-04-25 | 이지웅 | Device And Method For Optimizing Management Of Fabric Loss Ratio |
KR102067940B1 (en) | 2019-09-05 | 2020-01-17 | 이준희 | Method for manufacturing cutting products and system for manufacturing cutting products |
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JP2007057278A (en) * | 2005-08-22 | 2007-03-08 | Sumitomo Chemical Co Ltd | Evaluator for cut sheet piece and disposition determining method for cut sheet piece |
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JP2007057278A (en) * | 2005-08-22 | 2007-03-08 | Sumitomo Chemical Co Ltd | Evaluator for cut sheet piece and disposition determining method for cut sheet piece |
JP2007140046A (en) * | 2005-11-17 | 2007-06-07 | Nitto Denko Corp | Manufacturing system for optical display device and its manufacturing method |
JP2008200788A (en) * | 2007-02-19 | 2008-09-04 | Sumitomo Chemical Co Ltd | Optical film cutting device and optical film manufacturing method |
KR20120137207A (en) * | 2010-02-26 | 2012-12-20 | 닛토덴코 가부시키가이샤 | Determing method of cutting information, manufacturing method of strip-shaped polarizing sheet using the same, manufacturing method of optical display unit, strip-shaped polarizing sheet and raw material for polarizing sheet |
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KR20190042924A (en) | 2017-10-17 | 2019-04-25 | 이지웅 | Device And Method For Optimizing Management Of Fabric Loss Ratio |
KR102067940B1 (en) | 2019-09-05 | 2020-01-17 | 이준희 | Method for manufacturing cutting products and system for manufacturing cutting products |
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