CN108422488B

CN108422488B - Cutting knife die, cutting equipment applying same and cutting method

Info

Publication number: CN108422488B
Application number: CN201810204513.2A
Authority: CN
Inventors: 能木直安; 石尊仁; 刘岳芳; 李胜儀; 杨以权
Original assignee: Sumika Technology Co Ltd
Current assignee: Sumika Technology Co Ltd
Priority date: 2017-06-13
Filing date: 2018-03-07
Publication date: 2021-05-11
Anticipated expiration: 2038-03-07
Also published as: CN108422488A

Abstract

A cutting knife die, cutting equipment using the same and a cutting method. The cutting die is used for cutting the optical film. The cutting die comprises a bearing piece and an open type cutter. The open cutter extends to form an open opening, and the open opening is corresponding to one side of the optical film.

Description

Cutting knife die, cutting equipment applying same and cutting method

Technical Field

The present invention relates to a cutting die, a cutting apparatus using the same, and a cutting method, and more particularly, to a cutting die with a plurality of cutting tools, a cutting apparatus using the same, and a cutting method.

Background

In the conventional cutting method, after an optical film is cut from an optical roll film each time, an edge or a space waste is cut along with the optical film. The more times of cutting, the more the amount of waste material, resulting in waste of material of the optical roll film. Therefore, it is desirable to provide a new cutting method capable of reducing waste.

Disclosure of Invention

Therefore, an object of the present invention is to provide a cutting die, a cutting apparatus using the same, and a cutting method, which can solve the existing problems.

An embodiment of the invention provides a cutting die. The cutting die is used for cutting an optical film. The cutting die comprises a bearing piece and an open type cutter. The open cutter is provided with an open opening, and the open opening corresponds to at least one side edge of the cut optical film.

Another embodiment of the invention provides a cutting die. The cutting die is used for cutting an optical film. The cutting die comprises a bearing piece, a first cutter and a second cutter. The first cutter is arranged in the bearing part and extends along a first direction. The second cutter is assembled in the bearing piece and extends along a second direction, wherein the first direction is approximately vertical to the second direction, and the first cutter is connected with the second cutter and surrounds an opening. The opening corresponds to one side of the cut optical film.

Another embodiment of the invention provides a cutting apparatus. The cutting equipment comprises a material discharging mechanism, a conveying mechanism, the cutting knife mold and a controller. The controller is configured to operate at: controlling a discharging mechanism to release or fix the optical rolled film; controlling the conveying mechanism to convey the optical roll film; and controlling the cutting knife die to cut the optical roll film.

Another embodiment of the invention provides a cutting method. The cutting method comprises the following steps. A conveying mechanism conveys an optical film to advance in a conveying direction until the optical film is positioned below the open cutter of the cutting knife die; and cutting the optical film by the cutting die, wherein the optical film is cut by the open type cutter of the cutting die, the optical film is provided with a cutting alignment edge, and the cutting alignment edge is substantially consistent with the opening position of the open type cutter.

Another embodiment of the invention provides a cutting method. The cutting method comprises the following steps. A conveying mechanism conveys an optical film roll to advance in a conveying direction until the optical film roll is positioned below the first cutter of the cutting knife die; the cutting knife die cuts the optical roll film for the first time, wherein a first cutting tool of the cutting knife die cuts a cutting alignment edge of the optical roll film; the conveying mechanism drives the optical film roll to continue to advance in the conveying direction until the optical film roll is positioned below the first cutter and the second cutter; and the cutting knife die cuts the optical film for the second time, wherein the first knife and the second knife of the cutting knife die cut the optical film into an optical film, the optical film is provided with a first edge and a second edge which are opposite, and the first edge and the cutting alignment edge are the same edge.

Another embodiment of the invention provides a cutting method. The cutting method comprises the following steps. Providing an optical rolling film, wherein the optical rolling film is provided with a flat edge; an open cutter cuts the optical film to form an optical film, wherein the opening of the open cutter is aligned with the flat edge of the optical film.

Another embodiment of the invention provides a cutting die. The cutting die is used for cutting an optical film, wherein a plurality of optical film patches are arranged on the optical film, and a second gap is formed between two adjacent optical film patches. The cutting die comprises a bearing piece, a first cutter, a second cutter and an edge cutting cutter. The first cutter is arranged in the bearing part and extends along a first direction. The second cutter is assembled in the bearing piece and extends along a second direction, wherein the first direction is approximately vertical to the second direction, and the first cutter is connected with the second cutter and surrounds an opening. The opening corresponds to one side of the cut optical film. The edge cutting tool and the first tool are arranged along the second direction, and a first gap is formed between the first tool and the edge cutting tool. The first gap is greater than the second gap.

Another embodiment of the invention provides a cutting method. The cutting method comprises the following steps. A conveying mechanism conveys an optical film roll to advance in a conveying direction until the optical film roll and one of the optical film patches are positioned below the edge cutting tool of the cutting knife die; the cutting knife die cuts the optical film for the first time, wherein a cutting edge cutter of the cutting knife die cuts a cutting alignment edge of the optical film and a cutting alignment edge of one optical film patch; the conveying mechanism drives the optical film to continue to advance in the conveying direction until the second gap is positioned below the first gap; and the cutting knife die cuts the optical film for the second time, wherein the first knife and the second knife of the cutting knife die cut the optical film and one optical film patch to form an optical film, the optical film is completely separated from the second gap, the optical film is provided with a first edge and a second edge which are opposite, and the first edge and the cutting alignment edge are the same. And in the step of cutting the optical roll film for the second time by the cutting knife die, the edge cutting knife cuts a new cutting alignment edge for the optical roll film.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIGS. 1A-6B are diagrams illustrating a cutting process of an optical film roll by a cutting apparatus according to an embodiment of the invention;

FIG. 7 is a top view of a cutting die according to a second embodiment of the present invention;

FIG. 8 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 9 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 10 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 11 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 12 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 13 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 14A is a bottom view of a cutting die according to another embodiment of the present invention;

FIG. 14B depicts a side view of the cutting die of FIG. 14A;

FIG. 15 is a bottom view of a cutting die according to another embodiment of the present invention;

FIG. 16 is a bottom view of a cutting die according to another embodiment of the present invention;

FIG. 17 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 18 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 19 is a top view of a cutting die according to another embodiment of the present invention;

FIG. 20 is a schematic view of a drop feed mechanism according to another embodiment of the invention;

FIGS. 21-26B are diagrams illustrating a cutting process of the cutting apparatus for cutting the optical film according to another embodiment of the invention;

FIG. 27A is a bottom view of a cutting die according to another embodiment of the present invention;

FIG. 27B shows a side view of the cutting blade die of FIG. 27A;

FIG. 28 is a top view of a cutting die according to another embodiment of the present invention.

Wherein the reference numerals

10 ', 10 ", 30 ', 40 ': waste material

10. 40: optical roll film

10a, 30 c: release film

10b, 30 b: polarizing film

10c, 40 b: surface protective film

10e ', 40e ', 30e ': initial edge

10e1, 30e1, 40e 1: cut the contraposition limit

11. 12, 41: optical film

11e1, 12e1, 41e 1: first side

11e2, 12e2, 10e2, 41e 2: second side

11e 3: third side

11e 4: fourth side

30: optical film patch

40 a: functional layer

100. 200: cutting device

110. 110': discharging mechanism

111: coiling wheel

112: first nip roll

113: jumping roller

114: second nip roll

120: conveying mechanism

130: controller

140. 140 ', 240, 340, 440 ', 440 "', 540, 640, 740, 840, 940, 1040, 1140, 1240, 1340: cutting die

140a, 140a ', 240a, 340a, 440 a', 440a ", 640a, 1040a, 1140a, 1240a, 1340 a: open type cutter

140b, 240b, 340b, 440b, 1040b, 1140b, 1240 b: opening of the container

141: punch head

142. 442, 742, 842, 942: bearing part

142r1, 842r 1: first knife groove

142r2, 842r 2: second knife groove

143: first knife

144. 244: second tool

146: cutting tool

150: material receiving wheel

2441: first sub-cutter

2442: second sub-cutter

2443: third sub-cutter

245: third tool

442b, 742 b: lower surface

442s, 742s, 942 s: side surface

443: edge cutting tool

446: fourth tool

742 c: air flow channel

742p 1: airflow inlet

742p 2: air flow outlet

842 c: lubrication channel

8421: lubricating liquid containing part

941: lubricating liquid supplier

942p 1: inlet port

G1: air flow

L1, L2, L4, L5, L6, L8: length of

L3, L7: width of

H1, H2: gap

S1: direction of conveyance

S2: a first direction

S3: second direction

S4: direction of cutting

Detailed Description

The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

FIGS. 1A-6B are diagrams illustrating a cutting process of the cutting apparatus 100 for cutting the optical film roll 10 according to an embodiment of the invention.

Referring to fig. 1A and 1B, fig. 1A is a schematic diagram illustrating a cutting apparatus 100 according to an embodiment of the invention, and fig. 1B is a top view illustrating a cutting die 140 of fig. 1A. The cutting apparatus 100 includes a discharge mechanism 110, a conveying mechanism 120, a controller 130, and a cutting die 140.

The drop off mechanism 110 includes a take-up reel 111. An optical film roll 10 may be wound on a take-up reel 111. The discharging mechanism 110 may further include a first nip roller (nip roller) 112 disposed in two pairs, the first nip roller 112 is adjacent to the winding wheel 111, and the first nip roller 112 may fix or release the optical roll film 10, thereby controlling the advancing length of the optical roll film 10. In another embodiment, the optical film 10 can also be fed out from the lower side of the material winding wheel 111 (as shown by the dotted line in fig. 1A).

In one embodiment, as shown in the enlarged view of a part a' of fig. 1A (showing a cross section of the optical roll film 10), the optical roll film 10 includes a release film 10a, a polarizing film 10b and a surface protection film 10c, wherein the polarizing film 10b is located between the release film 10a and the surface protection film 10 c. The polarizing film 10b may be formed of a Polyvinyl Alcohol (PVA) based film. The material of the polyvinyl alcohol-based film may be, for example, polyvinyl alcohol or a derivative thereof. The derivative of polyvinyl alcohol may include, in addition to polyvinyl formaldehyde, polyvinyl acetal, and the like, one modified with an olefin such as ethylene or propylene, an unsaturated carboxylic acid or an alkyl ester thereof such as acrylic acid, methacrylic acid, or crotonic acid, acrylamide, and the like.

In one embodiment, a protective layer (not shown) may be disposed on at least one side of the polarizing film 10 b. The protective layer may be a single layer or a multi-layer structure. The material of the protective layer may include cellulose resin, acrylic resin, polyester resin, olefin resin, polycarbonate resin, cyclic olefin resin, oriented polypropylene, polyethylene, polypropylene, cyclic olefin polymer, cyclic olefin copolymer, or any combination thereof.

The surface protection film 10c and the release film 10a may be a single-layer or multi-layer structure, and the material thereof may include cellulose resin, acrylic resin, polyester resin, olefin resin, polycarbonate resin, cyclic olefin resin, oriented tensile polypropylene, polyethylene, polypropylene, cyclic olefin polymer, cyclic olefin copolymer, or any combination thereof.

The feeding mechanism 120 can continue to operate, so that when the discharging mechanism 110 discharges the optical film 10, the optical film 10 located above the feeding mechanism 120 is driven by the feeding mechanism 120 to move forward in the feeding direction S1 until the discharging mechanism 110 fixes the optical film 10. The conveying mechanism 120 is, for example, a belt conveying mechanism, but the embodiment of the invention is not limited thereto. In one embodiment, the speed of the conveying mechanism 120 for conveying the optical film 11 to be cut out later may be different from the speed of the discharging mechanism 110 for conveying the optical film 10.

The cutting blade 140 is located above the optical film 10 and can cut the optical film 10 downward. The cutting die 140 includes a punch 141, a carrier 142, and an open cutter 140 a. The carrier 142 is fitted to the punch 141 to move up and down with the punch 141. In addition, the material of the supporting member 142 is, for example, wood, plastic, metal or other suitable materials.

As shown in fig. 1A and 1B, the open cutter 140a may be mounted on a carrier 142. The open cutter 140a includes a first cutter 143 and two second cutters 144. The bearing member 142 has a first knife slot 142r1 and a second knife slot 142r 2. The first cutter 143 is fitted in the first cutter groove 142r1 of the carrier 142 and extends in the first direction S2. Each of the second cutters 144 is fitted in the corresponding second pocket 142r2 and extends in the second direction S3. The second cutters 144 are arranged along a first direction S2, wherein the first direction S2 is substantially perpendicular to the second direction S3. In the present embodiment, the second direction S3 and the transferring direction S1 may be substantially the same direction.

The open cutter 140a has at least one open opening, and the open opening 140b corresponds to or is aligned with one side (e.g., side) of the optical film to be cut. For example, the first knife 143 and the two second knives 144 extend into a shape of n, and the openings of n correspond to or align with one side (e.g., side) of the optical film to be cut. In one embodiment, the ends of the first cutter 143 and the second cutter 144 are connected. That is, the tool adjoining the first tool 143 meets the first tool 143 at its end, and does not intersect the first tool 143.

As shown in FIG. 1A, a portion of the first blade 143 may be secured (e.g., tightly fitted) within the first blade slot 142r1, while another portion protrudes from the first blade slot 142r 1. In one embodiment, the protruding length L1 of the first cutter 143 from the carrier 142 is between about 6 mm and about 10 mm. The relationship between the second cutter 144 and the second groove 142r2 is similar to the relationship between the first cutter 143 and the first groove 142r1, and the description thereof is omitted.

As shown in fig. 1A and 1B, the discharging mechanism 110 discharges the optical film roll 10, so that the conveying mechanism 120 can drive the optical film roll 10 thereon to advance in the conveying direction S1 until the optical film roll 10 is located below the first knife 143 of the cutting die 140, and the discharging mechanism 110 fixes the optical film roll 10. As shown in fig. 1B, the length L2 of the first cutter 143 in the first direction S2 is greater than the width L3 of the optical roll film 10 in the first direction S2, so that the first cutter 143 can completely cut the optical roll film 10 in the first direction S2 after the cutting die 140 cuts the optical roll film 10.

In one embodiment, the cutting die 140 sequentially cuts the release film 10a, the polarizing film 10b and the surface protection film 10c of the optical roll film 10; that is, in this embodiment, of the release film 10a, the polarizing film 10b and the surface protection film 10c, the release film 10a is closest to the cutting blade 140, and thus the cutting blade 140 cuts the release film 10a first. In another embodiment, the cutting die 140 can also sequentially cut the surface protection film 10c, the polarizing film 10b and the release film 10a of the optical roll film 10.

Next, as shown in fig. 2A and 2B, the cutting blade 140 moves in the cutting direction S4 to perform a first cutting operation on the optical film 10, wherein the first blade 143 of the cutting blade 140 cuts the optical film 10 and cuts the aligned edge 10e1 of the optical film 10. The cut alignment edge 10e1 is also the first edge 11e1 (the first edge 11e1 is shown in fig. 4B) of the optical film 11 (the optical film 11 is shown in fig. 4B) after the subsequent cutting, that is, the cut alignment edge 10e1 is the same as the first edge 11e 1. In addition, as shown in FIG. 2B, a first cut results in a finished room waste 10'. In the present embodiment, the cutting by the cutting die 140 of the present invention also generates two scrap edge materials 10 ". In another embodiment, the first cutting (i.e., the steps of FIGS. 1A-2B) may be omitted, thereby avoiding the generation of scrap 10' and 10 ″.

Then, as shown in fig. 3A and 3B, after the cutting die 140 moves upward to separate from the optical film 10, the discharging mechanism 110 releases the optical film 10, so that the conveying mechanism 120 drives the optical film 10 to continue to advance in the conveying direction S1 until the optical film 10 is located below the first and

second cutters

143 and 144, and the discharging mechanism 110 fixes the optical film 10.

Next, as shown in fig. 4A and 4B, the cutting blade 140 moves in the cutting direction S4 to cut the optical film 10 for the second time to form the optical film 11, wherein the optical film 11 has a first side 11e1 and a second side 11e2 opposite to each other, the first side 11e1 is a cutting alignment side (i.e., the cutting alignment side 10e1 in fig. 2B) formed during the previous cutting, and the second side 11e2 is formed during the current cutting. In this step, the first cutting tool 143 of the cutting tool 140 cuts the second edge 11e2 of the optical film 11, and also cuts a new cutting alignment edge 10e1 of the optical film 10, where the new cutting alignment edge 10e1 is one edge of the optical film 12 (the optical film 12 is shown in fig. 6B) cut next time. In other words, the cut alignment edge 10e1 of the currently cut optical film 10 is the same as one edge of the next optical film.

In addition, as shown in fig. 4B, the length L4 of each second cutter 144 along the second direction S3 can determine the length of the optical film 11 after being cut. For example, when the length L4 of the second cutter 144 is longer, the longer the length of the optical film 11 can be cut. As shown in fig. 4B, the cut optical film 11 has a third side 11e3 and a fourth side 11e4 opposite to each other. The length L5 of the third and fourth sides 11e3 and 11e4 is substantially equal to the length L4 of the second cutter 144. However, in another embodiment, the length L5 of the cut third edge 11e3 and the cut fourth edge 11e4 may be smaller than the length L4 of the second knife 144, depending on the distance between the cut alignment edge 10e1 and the end of the second knife 144 in fig. 3B. In other words, the length L4 of the second cutter 144 in the second direction S3 is greater than or substantially equal to the length of the cut optical film 11 in the second direction S3.

Next, as shown in fig. 5A and 5B, after the cutting die 140 moves upward to separate from the optical film 10, the discharging mechanism 110 releases the optical film 10, so that the conveying mechanism 120 drives the optical film 10 to continue to advance in the conveying direction S1 until the optical film 10 is located below the first and

second cutters

143 and 144, and the discharging mechanism 110 fixes the optical film 10.

Next, as shown in fig. 6A and 6B, the cutting blade 140 moves in the cutting direction S4 to cut the optical film 10 for the third time to form the optical film 12. The optical film 12 has a first side 12e1 and a second side 12e2 opposite to each other, the first side 12e1 is a cutting alignment side formed in the previous cutting (i.e., the cutting alignment side 10e1 in fig. 4B), and the second side 12e2 is formed in the current cutting. In this step, the first cutting tool 143 of the cutting die 140 cuts the second edge 12e2 of the optical film 12 and the new cutting alignment edge 10e1 of the optical film 10, wherein the new cutting alignment edge 10e1 is the same as one edge of the next cut optical film.

As shown in fig. 4B and 6B, in the second cutting process, the alignment edge for cutting the optical film roll cut in the previous time is the edge of the optical film cut in the subsequent time, so that the waste of the optical film can be reduced. In addition, as shown in fig. 2B, 4B and 6B, in addition to the larger waste 10' from the first cutting, the subsequent cutting can reduce the amount of waste between the optical films or even completely eliminate the waste between the optical films. Compared with the existing cutting method, the cutting method of the embodiment of the invention has the advantages that the cutting times are more, the waste materials generated between the optical films are less, or even no waste materials are generated. In another embodiment, before the first cutting, if the initial edge 10 e' (shown in fig. 1B) of the optical film 10 satisfies the geometric requirement of the optical film after the subsequent cutting, the cutting steps in fig. 1A-2B can be omitted and the cutting steps in fig. 3A-6B can be directly performed.

In another embodiment, after the step of fig. 6B, the same or similar method (e.g., the steps of fig. 5A-6B) can be continued to perform more cuts on the optical roll film 10 to obtain a greater number of optical film pieces, and simultaneously reduce the waste output to reduce waste and protect the environment.

FIG. 7 is a top view of a cutting die 140' according to another embodiment of the present invention. The cutting die 140 'includes a punch 141 (not shown), a carrier 142, and an open cutter 140 a'. The open cutter 140a 'has a structure similar to that of the open cutter 140a described above, except that the length L2 of the first cutter 143 of the open cutter 140 a' in the first direction S2 is smaller than the width L3 of the optical roll film 10 in the first direction S2, and thus does not completely cut the scrap edge material 10 ″. The edge material waste 10 "cut by the second cutter 144 maintains a continuous strip in several cuts, thereby facilitating the collection of the edge material waste 10". As shown, the cutting apparatus 100 further includes two material receiving wheels 150, and the two material receiving wheels 150 respectively wind and collect the scrap material 10 ″ for subsequent scrapping or recycling. Similar to the cutting method of the previous embodiment, the cutting method of the present embodiment can reduce the amount of waste between the optical films or even completely eliminate the waste between the optical films, except that the waste 10' of the first cutting is larger.

The cutting method of the above embodiment is described by taking an example of cutting one optical film at a time, but a plurality of optical films can be cut at a time by using an open cutter with different designs, which is exemplified below.

Fig. 8 is a top view of a cutting die 240 according to another embodiment of the invention. The cutting die 240 includes a punch 141 (not shown), a carrier 142, and an open cutter 240 a. The open cutter 240a includes a first cutter 143, two second cutters 244 and a third cutter 245, wherein the third cutter 245 and the first cutter 143 are arranged along the second direction S3, and the second cutters 244 extend along the second direction S3 and are arranged along the first direction S2. As shown, the open cutter 240a surrounds an opening 240b, and the opening 240b corresponds to or is aligned with one side of the optical film 11.

Each second cutter 244 may include a plurality of cutters. For example, each second tool 244 includes a plurality of first and second sub-tools 2441 and 2442 arranged in a line along the second direction S3, wherein the first sub-tool 2441 extends between the first tool 143 and the third tool 245, and the second sub-tool 2442 extends from the third tool 245 in a direction away from the first tool 143 and protrudes from the third tool 245.

Due to the arrangement of the first cutter 143, the second cutter 244 and the third cutter 245, two optical films 11 arranged along the second direction S3 can be cut in one cutting.

As in the previous embodiment, one side 10e1 of the currently cut optical film 10 can be used as a cutting alignment side for the next cutting, so as to perform the subsequent continuous cutting of two optical film sheets 11 each time. In this embodiment, not only can two optical films 11 be cut at a time, but also no waste material is generated between the two optical films 11 and between the next two optical films 11. In addition, as in the previous embodiments, the lengths of the first and

third cutters

143 and 245 in the first direction S2 may be greater than or less than the width of the optical roll film 10 in the first direction S2.

In an embodiment, the length of the second sub-cutter 2442 along the second direction S3 is greater than or substantially equal to the length of the cut optical film 11 along the second direction S3, and/or the length of the first sub-cutter 2441 along the second direction S3 is substantially equal to the length of the cut optical film 11 along the second direction S3.

FIG. 9 is a top view of a cutting die 340 according to another embodiment of the present invention. The cutting die 340 includes a punch 141 (not shown), a carrier 142, and an open cutter 340 a. The open cutter 340a includes a first cutter 143 and a plurality of second cutters 144. The second cutters 144 extend from the first cutter 143 in the second direction S3 and are arranged in the first direction S2. Due to the arrangement of the first cutter 143 and the second cutters 144, a plurality of optical films 11 arranged along the first direction S2 can be cut in one cutting. As shown, the open cutter 340a surrounds a plurality of openings 340b, and each opening 340b corresponds to or is aligned with one side of the optical film 11.

As in the previous embodiment, one side 10e1 of the currently cut optical film 10 can be used as a cutting alignment side for the next cutting, so as to perform the subsequent continuous cutting of multiple optical film pieces 11. In this embodiment, not only can a plurality of optical films 11 be cut at one time, but also no waste material is generated between the plurality of optical films 11 and between the next cutting of the plurality of optical films 11. Further, as in the previous embodiment, the length of the first cutter 143 in the first direction S2 may be greater than or less than the width of the optical roll film 10 in the first direction S2.

In an embodiment, the length of the second cutter 144 along the second direction S3 is greater than or substantially equal to the length of the cut optical film 11 along the second direction S3.

FIG. 10 is a top view of a cutting die 440 according to another embodiment of the present invention. The cutting die 440 includes a punch 141 (not shown), a carrier 142, and an open cutter 440 a. The open cutter 440a includes a first cutter 143, a plurality of second cutters 244, and a plurality of third cutters 245. The first cutter 143 and the third cutters 245 extend along the first direction S2 and are aligned along the second direction S3. The second cutters 244 extend along the second direction S3 and are arranged along the first direction S2.

In one embodiment, the lengths of the first and

third cutters

143, 245 in the first direction S2 may be greater than or substantially equal to the width of the optical roll film 10 in the first direction S2; in another embodiment, the lengths of the first and

third cutters

143 and 245 in the first direction S2 may be less than the width of the optical roll film 10 in the first direction S2; in another embodiment, the lengths of the first cutter 143 and the third cutter 245 in the first direction S2 may be different, for example, the length of the first cutter 143 in the first direction S2 is greater than the width of the optical roll film 10 in the first direction S2, but the length of the third cutter 245 in the first direction S2 is less than the width of the optical roll film 10 in the first direction S2.

Each second cutter 244 may include a plurality of cutters. For example, each second tool 244 includes a plurality of first, second and third sub-tools 2441, 2442 and 2443 aligned in the second direction S3, wherein the first sub-tool 2441 extends between the first tool 143 and the third tool 245, the third sub-tool 2443 extends between the second and third tools 245, and the second sub-tool 2442 extends from the leftmost third tool 245 in a direction away from the first tool 143.

Due to the arrangement of the first cutter 143, the second cutters 244 and the third cutters 245, a plurality of optical films 11 arranged in an array shape can be cut in one cutting.

As in the previous embodiment, one side 10e1 of the currently cut optical film 10 can be used as a cutting alignment side for the next cutting, so as to perform the subsequent continuous cutting of multiple optical film pieces 11. In this embodiment, not only can a plurality of optical films 11 be cut at one time, but also no waste material is generated between the plurality of optical films 11 and between the next cutting of the plurality of optical films 11.

In an embodiment, the length of the second sub-cutter 2442 along the second direction S3 is greater than or substantially equal to the length of the cut optical film 11 along the second direction S3, the length of the first sub-cutter 2441 along the second direction S3 is substantially equal to the length of the cut optical film 11 along the second direction S3, and/or the length of the third sub-cutter 2443 along the second direction S3 is substantially equal to the length of the cut optical film 11 along the second direction S3.

FIG. 11 is a top view of a cutting die 440' according to another embodiment of the present invention. The cutting die 440 'includes a punch 141 (not shown), a carrier 142, and an open cutter 440 a'. The open cutter 440 a' includes a first cutter 143, a plurality of second cutters 244, a plurality of third cutters 245, and a plurality of fourth cutters 446. Unlike the cutting blade die 440 of the previous embodiment, the cutting blade die 440' of the present embodiment further includes a fourth blade 446, and the fourth blade 446 extends in the second direction S3. As shown, the first cutters 143, the second cutters 244, the third cutters 245, and the fourth cutters 446 are arranged in an array. In this embodiment, the design of the cutting die 440' can be performed according to actual needs, and a plurality of optical films with at least two different areas and/or different shapes can be cut simultaneously.

In summary, the plurality of cutting tools of the cutting die 440 can be arranged to form at least one closed shape and at least one open opening. After cutting the optical film 10, at least two optical films are formed corresponding to the at least one closed and the at least one open opening, wherein the open openings are corresponding to or aligned with the corresponding optical films. The at least one closed and the at least one open openings can be arranged in an n × m array, so that the n × m array of optical films can be cut in one cutting, wherein n and m are positive integers greater than 1, and the values of n and m can be the same or different. In one embodiment, the area and/or shape of the at least one closed shape and the at least one open opening may be the same or different. In one embodiment, in the tool surrounding the closed shape, the length of the tool extending along the second direction S3 is substantially equal to the corresponding side length of the optical film 11 after being cut, and in the tool surrounding the open opening, the length of the tool extending along the second direction S3 is substantially equal to or exceeds the corresponding side length of the optical film 11 after being cut.

Fig. 12 is a top view of a cutting die 540 according to another embodiment of the invention. The cutting die 540 includes a punch 141 (not shown), a carrier 142, and an open cutter 340 a. Compared to the cutting die 340 of fig. 9, the open-type cutter 340a of the present embodiment is disposed along an oblique direction. Thus, a plurality of optical films 11 arranged in an oblique direction can be cut in one cutting. Here, the inclined direction, such as the first cutter 143, and the first direction S2 or the second direction S3 form an acute angle, such as 45 degrees, but not limited thereto. In one embodiment, the two ends of the first cutter 143 protrude from the optical film 11. As in the previous embodiment, one side 10e1 of the currently cut optical film 10 can be used as a cutting alignment side for the next cutting, so as to perform the subsequent continuous cutting of multiple optical film pieces 11. In this embodiment, not only can a plurality of optical films 11 be cut at one time, but also no waste material is generated between the plurality of optical films 11 and between the next cutting of the plurality of optical films 11.

Fig. 13 is a top view of a cutting die 640 according to another embodiment of the present invention. The cutting die 640 includes a punch 141 (not shown), a carrier 142, and an open cutter 640 a. The open cutter 640a includes the first cutter 143, the plurality of second cutters 244, and the plurality of third cutters 245. Compared to the cutting die 440 of fig. 10, the first cutter 143, the second cutters 244 and the third cutters 245 of the present embodiment are arranged along an oblique direction, so that a plurality of optical films 11 arranged along the oblique direction can be cut in one cutting. Here, the inclined direction, such as the first cutter 143, and the first direction S2 or the second direction S3 form an acute angle, such as 45 degrees, but not limited thereto. In one embodiment, the two ends of the first cutter 143 protrude from the optical film 11.

As in the previous embodiment, one side 10e1 of the currently cut optical film 10 can be used as a cutting alignment side for the next cutting, so as to perform the subsequent continuous cutting of multiple optical film pieces 11. In this embodiment, not only can a plurality of optical films 11 be cut at one time, but also no waste material is generated between the plurality of optical films 11 and between the next cutting of the plurality of optical films 11. As can be seen from fig. 8-13, the open-type tool according to the embodiment of the present invention includes a plurality of tools, and the tools can surround or be arranged with at least one closed shape and at least one open-type opening. After the optical film 10 is cut, at least one optical film is formed corresponding to the closed shape and the closed shape, wherein the open opening corresponds to or is aligned with the corresponding optical film.

Referring to fig. 14A and 14B, fig. 14A is a bottom view of a cutting die 740 according to another embodiment of the invention, and fig. 14B is a side view of the cutting die 740 of fig. 14A.

The cutting die 740 includes a punch 141 (not shown), a carrier 742, and an open cutter 140 a. The open cutter 140a includes a first cutter 143 and a second cutter 144. The carrier 742 has at least one airflow channel 742 c. The airflow channel 742c extends from a side 742s of the carrier 742 to the interior of the carrier 742 and to a lower surface 742b of the carrier 742. Airflow path 742c exposes airflow inlet 742p1 at side 742s and airflow outlet 742p2 at bottom 742 b. The airflow outlet 742p2 is oriented in a direction substantially the same as the cutting direction S4 (cutting direction S4 is shown in fig. 2B), and the airflow inlet 742p1 is oriented substantially perpendicular to the airflow outlet 742p 2. During the cutting process, an air flow (not shown) can enter from the air flow inlet 742p1 and flow out from the air flow outlet 742p 2. The outgoing air flow can press the optical film 10, so that the optical film 10 is prevented from warping, and the dimensional accuracy of the cut optical film 11 is improved.

As shown in fig. 14A, the closer the air outlet 742p2 is to the end of the second cutter 144, the better the effect of pressing the optical roll film 10. As shown, the part of the carrier 742 between the side 742s and the first tool 143 is not slotted and configured with tools, so that the airflow channel 742c can freely extend between the side 742s and the first tool 143 without being obstructed by the tools or the slots.

Referring to fig. 15, a bottom view of a cutting die 840 according to another embodiment of the invention is shown. The cutting die 840 includes a punch 141 (not shown), a carrier 842, and an open cutter 140 a. The carrier 842 has at least one lubrication channel 842c, a first siping 842r1, a second siping 842r2 and a lubricating fluid containing portion 8421. The first knife 143 and the second knife 144 of the open knife 140a are disposed in the first knife slot 842r1 and the second knife slot 842r2 of the carrier 842, respectively. Each lubricating passage 842c communicates the corresponding cutter groove (the first cutter groove 842r1 or the second cutter groove 842r2) with the lubricating liquid containing portion 8421. The lubricant containing portion 8421 is used for containing a lubricant (not shown), and the lubricant can lubricate the first cutter 143 and the second cutter 144 through the lubricant passage 842c, the first cutter groove 842r1 and the second cutter groove 842r2 to lubricate the cutting edge of the cutter, so that the cut optical film and the cutter can be separated more smoothly.

In addition, in another embodiment, the cutting blade mold 840 may further include an air flow channel 742c of the cutting blade mold 740. In addition, in another embodiment, the cutting die 840 may also include the die designs of other embodiments of the present invention.

Referring to fig. 16, a bottom view of a cutting die 940 according to another embodiment of the invention is shown. The cutting die 940 includes a punch 141 (not shown), a carrier 942, and an open cutter 140 a. The carrier 942 has at least one lubrication channel 842c, a first knife channel 842r1, and a second knife channel 842r 2. Unlike the carrier 842, the lubrication channel 842c of the carrier 942 of this embodiment extends to the outer surface of the carrier 942, such as the side surface 942s, and exposes an inlet 942p1 from the outer surface. The inlet 942p1 may be connected to an external lubrication fluid supply 941. The lubricating fluid supplier 941 may supply a lubricating fluid (not shown) to lubricate the cutting edges of the cutters (the first cutter 143 and the second cutter 144) through the inlet 942p1, the lubricating channel 842c and the cutter grooves (the first cutter groove 842r1 and the second cutter groove 842r 2).

In another embodiment, the cutting die 940 may further include an air flow path 742c of the cutting die 740.

In one embodiment, the material of the lubricating fluid may include water, alcohols, ketones, ethers, esters, aliphatic, aromatic hydrocarbons, halogenated hydrocarbons, amides, cellosolves, silicone compounds, and the like, and examples thereof include 2-butanol, isopropanol, glycerol, ethylene glycol, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, diethyl ether, tetrahydrofuran, dioxane, methyl cellosolve such as anisole, ethyl acetate, butyl acetate, toluene, xylene, methylene chloride, dichloroethane, and dimethylformamide, and silikon (silicone). These materials may be used alone or in combination of two or more.

The open type tool of the above embodiment is described by taking an example including three or more tools, but the embodiment of the present invention is not limited thereto. The cutter of the open cutter may be L-shaped or may be an open opening extending continuously, as exemplified below.

Referring to fig. 17, a top view of a cutting die 1040 according to another embodiment of the invention is shown. The cutting die 1040 includes a punch 141 (not shown), a carrier 142, and an open cutter 1040 a. Unlike the open cutter 140a, the number of the open cutters 1040a of the present embodiment is two, such as the first cutter 143 and the second cutter 144. The first cutter 143 is connected to the second cutter 144 in an L-shape. The first cutter 143 and the second cutter 144 form two sides of a quadrangle, and the two openings 1040b of the open cutter 1040a are the other two sides of the quadrangle. In this design, after the optical film 10 is cut into the optical film 11, two sides of the cut optical film 11 are respectively corresponding to or aligned with the two openings 1040b of the open cutter 1040 a. As shown in the figure, after cutting, one side (e.g., the first side 11e1) of the optical film 11 is the same as the cut alignment side 10e1 (shown in fig. 4B) of the optical roll-up film 10 before cutting, and the other side (e.g., the third side 11e3) of the optical film 11 is the same as the second side 10e2 of the optical roll-up film 10.

The second side 10e2 of the optical film 10 can be substantially perpendicular to the cut alignment side 10e 1. In one embodiment, before the first cutting, the second edge 10e2 of the optical film 10 can be cut, for example, flattened by a knife or a laser, so that the third edge 11e3 of the optical film 11 that is subsequently cut is a flattened edge. The cutting method of the present embodiment for cutting the optical film 10 into the optical film 11 can be similar to or the same as the aforementioned embodiment, and is not described herein again.

Referring to fig. 18, a top view of a cutting die 1140 according to another embodiment of the invention is shown. The cutting die 1140 includes a punch 141 (not shown), a carrier 142, and an open cutter 1140 a. The open cutter 1140a is pentagonal and the opening 1140b of the open cutter 1140a is hexagonal together with five sides thereof. The opening 1140b of the open cutter 1140a corresponds to or aligns with the third side 11e3 of the cut optical film 11. In one embodiment, before the first cutting, the second edge 10e2 of the optical film 10 can be cut, for example, flattened by a knife or a laser, so that the third edge 11e3 of the optical film 11 that is subsequently cut is a flattened edge.

Referring to fig. 19, a top view of a cutting die 1240 according to another embodiment of the invention is shown. The cutting die 1240 includes a punch 141 (not shown), a carrier 142, and an open cutter 1240 a. Open cutter 1240a is a corner cut circle with the corner cut edge being opening 1240 b. This opening 1240b corresponds to or is aligned with the third side 11e3 of the optical film sheet 11 after cutting. In an embodiment, before the first cutting, the second edge 10e2 of the optical film 10 may be flattened by cutting, so that the third edge 11e3 of the optical film 11 that is subsequently cut is a flattened edge. In one example, open cutter 1240a is a non-rectangular cutter having a corner cut or having a straight edge, such as oval, fan, wine barrel, heart, etc. in shape.

FIG. 20 is a schematic view of a discharge mechanism 110' according to another embodiment of the invention. The discharging mechanism 110' may include or further include a first nip roller 112, a dancer roller (dancer roller) 113, and a second nip roller 114, wherein the first nip roller 112 and the second nip roller 114 are disposed in pair. The dancing roller 113 and the second nip roller 114 are sequentially disposed between the first nip roller 112 and the winding wheel 111. In the present embodiment, the advancing length of the optical film 10 can be adjusted by the first nip roller 112. For example, in the process of continuously releasing the optical film roll 10 from the winding wheel 111 under the driving of the second nip roller 114, if the position of the bouncing roller 113 is lowered and the rotation of the first nip roller 112 is stopped, the stock length of the optical film roll 10 can be increased; the second nip roller 114 is driven to continuously release the optical film 10 from the winding wheel 111, and the first nip roller 112 is rotated to advance the optical film 10 in the conveying direction S1, so as to raise the position of the bouncing roller 113. Therefore, by the design of the jumping roller 113, the advancing of the optical film 10 can have a buffer area, so as to flexibly adjust the advancing length of the optical film 10.

In one embodiment, the dancing roller 113 can also adjust the tension of the optical film roll 10. Although not shown, the control of the roller can be realized by the controller 130. In one mode of motion, the dancing roller 113 can be vertically repositioned up and down to adjust the tension of the optical web 10, as shown in FIG. 20. The discharging mechanism 110' may further include a tension sensor (not shown) disposed on any roller contacting the optical film 10 for sensing the tension of the optical film 10 and feeding back to the controller 130, so that the controller 130 controls the jumping roller 113 (via a driver) to move.

In another motion, the dancing roller 113 can be shifted to the left or right, and the tension of the optical film roll 10 can be adjusted as well. For the control mechanism, the drop feed mechanism 110' may further include a rocker arm (not shown) and a driver (not shown), wherein the rocker arm connects the bounce roller 113 and the driver. The controller 130 can control the driver to drive the rocker arm to swing, so as to drive the bouncing roller 113 to change positions in a left-right swinging manner.

The cutting method of the foregoing embodiments can also be implemented for controlling the optical roll film 10 by using the discharging mechanism 110'.

FIGS. 21-26B illustrate a cutting process of the cutting apparatus 200 for cutting the optical film roll 40 according to another embodiment of the invention.

First, as shown in fig. 21, at least one optical film patch 30 is provided. The optical film patch 30 may be cut from a roll of optical film using any of the cutting dies described above or other cutting tools, such as a straight knife, a circular knife, or a laser. As shown in the figure, the optical film patch 30 includes a first release film 30a, a polarizing film 30b and a second release film 30c, wherein the polarizing film 30b is located between the first release film 30a and the second release film 30 d. The material of the first release film 30a and the second release film 30c is similar to or the same as the release film 10a, and is not described herein again. The polarizing film 30b is similar to or the same as the polarizing film 10b, and will not be described herein again.

Then, as shown in fig. 22A and 22B, fig. 22A shows a side view of the optical film patch 30 of fig. 21 attached to an optical roll film 40, and fig. 22B shows a top view of fig. 22A. As shown, a plurality of optical film patches 30 can be attached to the optical roll film 40, wherein the second gap H2 between two adjacent optical film patches 30 can be between 0 mm and 2 mm, or even larger. After the lamination, the axial angle of the optical film patch 30 and the axial angle of the optical roll film 40 may be not parallel or perpendicular to each other, but the embodiment of the invention is not limited thereto.

Before the lamination, one of the release films, such as the release film 30c, of the optical film patch 30 is peeled off to expose the adhesive layer (not shown) of the polarizing film 30b, and then the polarizing film 30b is adhered to the optical roll film 40. The optical roll film 40 includes a functional layer 40a and a surface protective layer 40b, and the polarizing film 30b of the optical film patch 30 is, for example, bonded to the functional layer 40 a. The functional layer 40a is a Film layer having an optical adjustment property, such as a Brightness Enhancement Film (DBEF), a Dual Brightness Enhancement Film (APF), a retardation Film, or a prism Film. The material of the surface protection layer 40b is similar to or the same as the surface protection film 10c, and is not described herein again.

Then, as shown in fig. 23A and 23B, fig. 23A is a schematic diagram of a cutting apparatus 200 according to another embodiment of the invention, and fig. 23B is a top view of the cutting die 440 ″ of fig. 23A. The cutting apparatus 200 includes a drop out mechanism 110, a transport mechanism 120, a controller 130, and a cutting die 440 ". The cutting die 440' includes a punch 141 (not shown), a carrier 142, and an open cutter 440a ″. The open cutter 440a ″ includes a first cutter 143, at least one second cutter 244, at least one third cutter 245 and an edge cutting cutter 443. The open cutter 440a "of the present embodiment is similar to the open cutter 440a, except that the open cutter 440 a" further includes an edge cutting tool 443, and the edge cutting tool 443 extends along the first direction S2 and is aligned with the first cutter 143 along the second direction S3, for example, is disposed adjacent to the first cutter 143.

The first gap H1 between the edge cutting tool 443 and the first tool 143 may be larger than the second gap H2, so that the second gap H2 between two adjacent optical film patches 30 may be completely located within the first gap H1 (as shown in fig. 25B). As such, in the subsequent cutting, the second gap H2 may be completely cut, i.e., the second gap H2 may not remain in the cut optical film 41. In one embodiment, the first gap H1 may be between about 2 mm and about 10 mm.

As shown, the discharging mechanism 110 releases the optical film roll 40, so that the conveying mechanism 120 can drive the optical film roll 40 thereon to advance in the conveying direction S1 until the optical film roll 40 and the optical film patch 30 are located below the trimming cutter 443 of the cutting die 440 ", and the discharging mechanism 110 holds the optical film roll 40. As shown in fig. 23B, the length L6 of the edge-cutting tool 443 in the first direction S2 is greater than the width L7 of the optical film 40 in the first direction S2, so that the edge-cutting tool 443 can completely cut the optical film 40 and the optical film 30 in the first direction S2 after the cutting tool 440 ″ cuts the optical film 40 and the optical film 30.

Next, as shown in fig. 24A and 24B, the cutting blade die 440 ″ moves in the cutting direction S4 to cut the optical film 40 and the optical film 30 for the first time, wherein the cutting blade 443 of the cutting blade die 440 ″ cuts the optical film 40 and the optical film 30, and cuts the cut alignment edge 40e1 of the optical film 40 and the cut alignment edge 30e1 of the optical film 30. The cut alignment edge 40e1 and the cut alignment edge 30e1 are also the first edge 41e1 (the first edge 41e1 is shown in fig. 26B) of the optical film 41 (the optical film 41 is shown in fig. 26B) after the subsequent cutting, that is, the cut alignment edge 40e1 and the cut alignment edge 30e1 are the same as the first edge 41e 1.

In addition, as shown in fig. 24B, the optical film roll 40 and the optical film patch 30 after the first cutting yield a waste material 40 'and 30', respectively. In another embodiment, the cutting step of fig. 23A-24B can be omitted if the initial edge 40e 'of the optical film roll 40 of fig. 22B is aligned with the initial edge 30 e' of the optical film patch 30.

Next, as shown in fig. 25A and 25B, after the cutting knife die 440 ″ moves upward to separate from the optical film roll 40, the discharging mechanism 110 releases the optical film roll 40, so that the transporting mechanism 120 drives the optical film roll 40 to continue to advance in the transporting direction S1 until the optical film roll 40 is located below the first knife 143, the second knife 244, the third knife 245 and the edge cutting knife 443, and the discharging mechanism 110 fixes the optical film roll 40.

As shown, the second gap H2 between the two optical patches 30 is located between the first knife 143 and the first gap H1 of the edge cutting knife 443, so that the second gap H2 can be completely cut off during the subsequent cutting, or the second gap H2 does not remain on the cut optical film 41 (shown in fig. 26B) and the cut optical film roll 40.

Next, as shown in fig. 26A and 26B, the cutting blade die 440 ″ moves in the cutting direction S4 to perform a second cutting operation on the optical film roll 40 and the optical film sheet 30 to form a plurality of optical film sheets 41, wherein the optical film sheets 41 have first sides 41e1, and the first sides 41e1 are the cutting alignment sides formed during the previous cutting operation (i.e., the cutting alignment sides 40e1 in fig. 24B).

In this step, the first cutter 143 of the cutting die 440 ″ also cuts the new cut alignment edge 40e1 of the optical roll 40 and the new cut alignment edge 30e1 of the optical film 30, in addition to the second edge 41e2 of the optical film 41, the new cut alignment edges 40e1 and 30e1 are the edges of the optical film 41 cut next time. In other words, the alignment edges 40e1 and 30e1 of the optical film 40 cut by the edge cutter 443 are the same as one edge of the optical film 41 cut next time.

Then, the steps shown in fig. 25A to 26B can be used to continuously cut more optical films 41 from the optical film roll 40 and the optical film patch 30.

In addition, the open type tool 440a "of the present embodiment is described by taking the combination of the open type tool 440a and the trimming tool 443 of the previous embodiment as an example, but the open type tool 440 a" of another embodiment may be any combination of the open type tool and the trimming tool 443.

In addition, as shown in fig. 26B, the lengths L6 of the first tool 143 and the edge cutting tool 443 in the first direction S2 may be the same, but may be different. In one embodiment, the length L6 of the trimming cutter 443 in the first direction S2 is greater than the distance L8 between the uppermost second cutter 244 and the lowermost second cutter 244, so that the optical film 41 can be completely separated when the next cutting is performed. In one embodiment, the edge cutting tool 443 and the first tool 143 may be shorter than the width L7 of the optical roll film 40 along the first direction S2, so that the scrap edge material of the optical roll film 40 remains continuous after each cut, similar to the embodiment of fig. 7. Referring to fig. 27A and 27B, fig. 27A is a bottom view of a cutting die 440 '″ according to another embodiment of the present invention, and fig. 27B is a side view of the cutting die 440' ″ of fig. 27A.

The cutting die 440' "includes a punch 141 (not shown), a carrier 442, and an open cutter 440 a". The carrier 442 has at least one airflow channel 742 c. The airflow channel 742c extends from the side surface 442s of the carrier 442 toward the interior of the carrier 442 and to the lower surface 442b of the carrier 442. The airflow channel 742c is exposed from the airflow inlet 742p1 at the side surface 442s and the airflow outlet 742p2 at the lower surface 442b, wherein the airflow outlet 742p2 is located between the first knife 143 and the edge cutting knife 443. The airflow outlet 742p2 is oriented in a direction substantially the same as the cutting direction S4 (cutting direction S4 is shown in fig. 24A), and the airflow inlet 742p1 is oriented substantially perpendicular to the airflow outlet 742p 2.

During cutting, a gas flow G1 can enter from the gas flow inlet 742p1 and flow out from the gas flow outlet 742p 2. Since the air outlet 742p2 is located between the first cutter 143 and the edge cutting cutter 443, the air flow flowing out can press the optical film 40 and the optical patch 30 on both sides of the second gap H2 to improve the cutting accuracy. In addition, the gas flow G1 may be provided by a gas flow provider (not shown).

FIG. 28 is a top view of a cutting die 1340 according to another embodiment of the present invention. The cutting knife die 1340 includes a punch 141 (not shown), a carrier 142, and an open knife 1340 a. The open cutter 1340a has a structure similar to that of the open cutter 140a, except that the open cutter 1340a further comprises at least one cutting cutter 146 for cutting the waste material 10 ". As shown, the two cutting tools 146 extend along the first direction S2, and extend from the two second tools 144 away from the second tools 144 to beyond the side edges of the optical film roll. Thus, when the optical film 10 is cut, the large-area scrap 10 ″ can be cut into a plurality of small-area scraps for collecting the small-area scraps conveniently.

In summary, the open cutter of the cutting die according to the embodiment of the present invention may include a plurality of cutters. In one embodiment, the cutters may surround or be arranged in an open opening. After the optical film is cut, the area corresponding to the open type opening is cut to form an optical film, wherein the open type opening corresponds to or is aligned with one side of the optical film. In another embodiment, the cutters may surround or be arranged in at least one closed shape and at least one open opening. After the cut optical film is cut, a plurality of optical films are cut in the area corresponding to the closed opening and the open opening, wherein the open opening corresponds to or is aligned with one side of the corresponding optical film. Further, the open opening may have one or more openings. The open-type opening may be a cutter having an opening, such as a polygonal cutter, a truncated circular cutter, or an L-shaped cutter, in terms of shape. For the L-shaped cutter, the open cutter has two side openings corresponding to or aligned with two sides of the cut optical film. In another embodiment, one of the open cutters may cut a cutting alignment edge of the optical film, and the cutting alignment edge is the same as one edge of the optical film to be cut next time, so as to reduce the amount of waste material of the optical film.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a cutting die for cut out an optical film piece, its characterized in that, this cutting die includes:

the bearing piece is provided with a lubricating channel and a cutter groove, and the lubricating channel is communicated with the cutter groove; and

an open cutter, comprising:

the first cutter is assembled in the cutter groove of the bearing piece and extends along a first direction;

the second cutter is assembled in the cutter groove of the bearing piece and extends along a second direction, the first direction is perpendicular to the second direction, the first cutter is connected with the second cutter and surrounds an opening, the opening corresponds to one side edge of the optical film which is cut out, the length of the first direction of the first cutter is larger than the width of an optical film in the first direction and protrudes out of the second cutter, and the lubricating channel is used for providing lubricating liquid to the first cutter and the second cutter.

2. The cutting die of claim 1, including a plurality of said second cutters spaced apart from one another and arranged along said first direction and respectively connected to said first cutters.

3. The cutting die of claim 1 or 2, wherein the length of the second cutter along the second direction is greater than or equal to the length of the cut optical film along the second direction.

4. The cutting die of claim 1 or 2, comprising:

the two second cutters are arranged along the first direction; and

a third cutter spaced apart from the first cutter and arranged along the second direction;

the second cutter extends from the first cutter to the third cutter and protrudes beyond the third cutter.

5. The cutting die of claim 4, wherein each of said second cutters includes a first sub-cutter and a second sub-cutter aligned along said second direction, said first sub-cutter extending between said first cutter and said third cutter, and said second sub-cutter extending from said third cutter in a direction away from said first cutter; the length of the second sub-cutter along the second direction is greater than or equal to the length of the cut optical film along the second direction, and/or the length of the first sub-cutter along the second direction is equal to the length of the cut optical film along the second direction.

6. The cutting die of claim 4, wherein the cutting die row is configured to have at least one closed shape and at least one open opening, the at least one closed shape and the at least one open opening are arranged in an n x m array, wherein n and m are positive integers greater than 1, and values of n and m are different, and/or areas or shapes of the at least one closed shape and the at least one open opening are different.

7. The utility model provides a cutting die for cut out an optics diaphragm, wherein dispose a plurality of optics membrane pasters on this optics diaphragm, and have a second clearance between two adjacent these optics membrane pasters, its characterized in that, this cutting die includes:

a bearing member; and

an open cutter, comprising:

the first cutter is assembled in the bearing piece and extends along a first direction;

the second cutter is assembled in the bearing piece and extends along a second direction, wherein the first direction is vertical to the second direction, the first cutter is connected with the second cutter and surrounds an opening, and the opening corresponds to one side edge of the optical film which is cut; and

the edge cutting tool and the first tool are arranged along the second direction, and a first gap is formed between the first tool and the edge cutting tool;

the first gap is larger than the second gap, and the length of the first direction of the first cutter is larger than the width of an optical film roll along the first direction and protrudes out of the second cutter.

8. The cutting die of claim 7, wherein the carrier has an air flow passage that exposes an air flow outlet from a bottom surface of the carrier, the air flow outlet being oriented in the same direction as the cutting direction of the cutting die.

9. The cutting die of claim 8, wherein the airflow channel exposes an airflow inlet from a side of the carrier, the airflow inlet being oriented perpendicular to the airflow outlet.

10. The cutting die of claim 7, wherein the carrier has a lubrication channel and a slot, the first tool is disposed in the slot, and the lubrication channel is connected to the slot.

11. The cutting die of claim 10, wherein the lubrication channel extends to an outer surface of the supporting member for connecting a lubricant supplier, and/or the cutting die further comprises a lubricant accommodating portion, and the lubrication channel connects the cutting groove and the lubricant accommodating portion.

12. The cutting die of claim 10, wherein the lubricating fluid comprises water, alcohols, ketones, ethers, esters, aliphatic, aromatic hydrocarbons, halogenated hydrocarbons, amides, cellosolves, silicone polymers.

13. A cutting apparatus, comprising:

a material discharging mechanism;

a conveying mechanism;

the cutting die of any one of claims 1 to 12; and

a controller, for operating at:

controlling the discharging mechanism to release or fix the optical film;

controlling the transmission mechanism to transmit the optical film; and

and controlling the cutting knife die to cut the optical roll film.

14. The cutting apparatus as claimed in claim 13, wherein the speed at which the transport mechanism transports the optical film sheet is different from the speed at which the drop-in mechanism transports the optical film roll.

15. The cutting apparatus according to claim 13 or 14, wherein the discharge mechanism further comprises a dancer roller.

16. A method of cutting, comprising:

a conveying mechanism for conveying an optical film roll in a conveying direction until the optical film roll is located below the open cutter of the cutting die according to any one of claims 1 to 12; and

the cutting die cuts the optical film roll, wherein the open type cutter of the cutting die cuts an optical film, the optical film is provided with a cutting alignment edge, and the cutting alignment edge is consistent with the opening position of the open type cutter.

17. The cutting method of claim 16, wherein prior to the cutting step, the cutting method further comprises:

and flattening the edge of the optical roll film.

18. A method of cutting, comprising:

providing an optical rolling film, wherein the optical rolling film is provided with a flat edge; and

cutting the optical film by using an open cutter of a cutting knife die to form an optical film;

wherein, the opening of this open cutter aligns this of this optics book membrane and levels the limit, and includes:

a first cutter extending along a first direction; and

a second knife extending along a second direction, wherein the length of the first direction of the first knife is greater than the width of the optical film roll along the first direction and protrudes from the second knife.

19. The cutting method as claimed in claim 18, wherein before the step of cutting the optical film by the open cutter, the cutting method further comprises:

the flat edge is formed using the open cutter, a cutter, or a laser.

20. The cutting method according to claim 18, wherein the optical roll film comprises a release film, a polarizing film and a surface protection film; in the step of cutting the optical roll film for the first time by the cutting die, the cutting die sequentially cuts the release film, the polarizing film and the surface protection film of the optical roll film.

21. The slitting process according to claim 18 wherein the first blade extends at an angle to the direction of travel of the optical web.

22. A method of cutting, comprising:

a conveying mechanism for conveying an optical film roll in a conveying direction until the optical film roll is located below the first cutter of the cutting die according to any one of claims 1 to 6 and 9 to 11;

the cutting knife die cuts the optical rolling film for the first time, wherein a cutting alignment edge of the optical rolling film is cut by the first knife of the cutting knife die;

the conveying mechanism drives the optical film roll to continue to advance in the conveying direction until the optical film roll is positioned below the first cutter and the second cutter; and

the cutting die cuts the optical film roll for the second time, wherein the first cutter and the second cutter of the cutting die cut an optical film from the optical film roll, the optical film has a first edge and a second edge which are opposite, and the first edge and the cutting alignment edge are the same.

23. The cutting method according to claim 22, wherein in the step of cutting the optical film roll for the second time by the cutting die, the first cutting tool cuts a new cutting alignment edge on the optical film roll; the cutting method is characterized by further comprising the following steps:

the cutting die cuts the optical film for the third time, wherein the first cutter and the second cutter of the cutting die cut another optical film from the optical film, the another optical film has the first edge and the second edge which are opposite, and the first edge and the new cutting alignment edge of the another optical film are the same.

24. The cutting method according to claim 22, wherein the optical roll film comprises a release film, a polarizing film and a surface protection film; in the step of cutting the optical roll film by the open cutter, the open cutter sequentially cuts the release film, the polarizing film and the surface protection film of the optical roll film.

25. The slitting process of claim 22 wherein the opening of the open cutter is at an angle to the direction of travel of the optical film web.

26. A method of cutting, comprising:

a conveying mechanism for conveying an optical film roll to advance in a conveying direction until the optical film roll and one of the optical film patches are located below the edge cutting tool of the cutting die according to any one of claims 7-12;

the cutting knife die cuts the optical film for the first time, wherein the edge cutting tool of the cutting knife die cuts a cutting alignment edge of the optical film and a cutting alignment edge of one of the optical film patches;

the transmission mechanism drives the optical film to continue to advance in the transmission direction until the second gap is positioned below the first gap; and

the cutting knife die cuts the optical roll film for the second time, wherein the first cutter and the second cutter of the cutting knife die cut the optical roll film and one optical film patch to form an optical film, the optical film is completely separated from the second gap, the optical film is provided with a first edge and a second edge which are opposite, and the first edge and the cutting alignment edge are the same;

and in the step of cutting the optical film for the second time by the cutting die, the edge cutting tool cuts a new cutting alignment edge for the optical film.