Workpiece manufacturing method and manufacturing apparatus therefor

Abstract

An object of the present invention is to suppress bending of an edge portion of a workpiece in a process of punching a web to manufacture the workpiece. In a method for manufacturing a workpiece (B) in which a long strip-shaped web (A1) is conveyed and the web (A1) passes between a die roller (6) and an anvil roller (7) of a rotary die-cutting machine (2) having the die roller (6) and the anvil roller (7), and a cut-in line (C) that demarcates the contour of the workpiece (B) is formed on the web (A1), the web (A1) is displaced toward the anvil roller (7) on the exit side of the rotary die-cutting machine (2) and conveyed.

Description

Technical Field

[0001] The present invention relates to a method and apparatus for forming a cut line on a web material and manufacturing a workpiece from the web material. Background Art

[0002] Conventionally, a long strip of web is passed between a die roll and an anvil roll of a rotary die cutter to form a cutting line on the web, and a region surrounded by the cutting line is separated from the web to obtain a workpiece (eg, Patent Document 1).

[0003] Patent Document 1: Japanese Patent Application Publication No. 2013-202768

[0004] However, when a workpiece is manufactured using a rotary die cutter, the edge of the workpiece may be bent. Summary of the invention

[0005] Problems that the invention will solve

[0006] An object of the present invention is to provide a method and an apparatus for obtaining a workpiece with reduced edge bending.

[0007] Means for solving problems

[0008] The inventors of the present invention have studied the causes of the bending described above. Specifically, the inventors of the present invention have focused on the phenomenon that the bending described above is likely to occur at the edge of the workpiece at the rear side of the web in the conveying direction. Figure 10 As shown, the web 100 is conveyed in a direction orthogonal to a line connecting the center of the rotation axis of the die roller 600 and the center of the rotation axis of the anvil roller 700. Among the blade tips of the die roller 600 that rotates synchronously with the conveyance of the web 100, the blade tip located on the front side in the conveyance direction of the web first enters the web, and the blade tip located on the rear side in the conveyance direction of the web enters the web last and then leaves the web. The knife portion 630 protrudes from the outer peripheral surface of the die roller, so the peripheral speed of the blade tip 6310 of the knife portion 630 is faster than the peripheral speed of the blade root of the knife portion 630. Therefore, as Figure 11 As shown, when the blade tip 6310 of the blade portion 630 on the rear side in the conveying direction of the web 100 leaves the web 100, the blade tip 6310 bounces the edge W1 of the workpiece W. As a result, it is found that the workpiece W is bent and wrinkles are generated near the edge W1 of the workpiece W. The present inventors have solved the above-mentioned problem after finding out the cause.

[0009] The first method for manufacturing a workpiece is to convey a long strip of web material and pass the web material between a die roller and an anvil roller of a rotary die-cutter having a die roller and an anvil roller, thereby forming a cutting line on the web material that divides the contour of the workpiece, wherein, on the outlet side of the rotary die-cutter, the web material is displaced toward the anvil roller side and conveyed.

[0010] The manufacturing method of the workpiece of the second method is to convey a long strip-shaped web, and pass the web between the die roller and the anvil roller of a rotary die cutter having a die roller and an anvil roller, so as to form a cutting line on the web that divides the contour of the workpiece. Among them, on the outlet side of the rotary die cutter, the web is conveyed along the outer peripheral surface of the anvil roller.

[0011] The manufacturing method of the workpiece of the third method is that in the manufacturing method of the above first or second method, on the outlet side of the rotary die cutter, the web is conveyed in a manner that does not separate the workpiece from the web.

[0012] The manufacturing method of the workpiece of the fourth method is that in the manufacturing method of any one of the above first to third methods, the web has a support film and a processing film laminated on the support film, and the die roller is used to form the cutting line on the processing film in a manner that does not completely cut into the support film.

[0013] The manufacturing method of the workpiece of the fifth method is that in the manufacturing method of any one of the above first to fourth methods, on the inlet side of the rotary die cutter, the web is conveyed in a direction orthogonal to the line connecting the center of the rotation axis of the die roller and the center of the rotation axis of the anvil roller, and the web is passed between the die roller and the anvil roller.

[0014] According to another aspect of the present invention, there is provided a manufacturing apparatus for a workpiece.

[0015] The manufacturing apparatus for the workpiece of the first method has: a rotary die cutter having a die roller and an anvil roller; and a conveying unit that conveys a long strip-shaped web from the inlet side to the outlet side of the die roller, and the conveying unit passes the web between the die roller and the anvil roller, thereby forming a cutting line that divides the contour of the workpiece. The conveying unit has a guide roller that displaces the conveying path of the web toward the anvil roller side on the outlet side of the rotary die cutter.

[0016] The manufacturing apparatus for the workpiece of the second method is that in the manufacturing apparatus of the above first method, the conveying unit conveys the web in a manner that does not separate the workpiece from the web on the outlet side of the rotary die cutter.

[0017] Advantages of the Invention

[0018] By manufacturing a workpiece using the above manufacturing method and manufacturing apparatus for the workpiece, it is possible to suppress the generation of bending and wrinkles at the edge of the workpiece. Description of the Drawings

[0019] Figure 1 It is a partial omitted top view of the web.

[0020] Figure 2 It is a schematic side view showing the layer structure of the web of an example.

[0021] Figure 3 It is a schematic side view showing the layer structure of a web for other examples.

[0022] Figure 4 It is a schematic side view of a manufacturing apparatus for manufacturing a workpiece from a web.

[0023] Figure 5 It is an enlarged top view of the manufacturing apparatus as viewed from above the rotary die cutter.

[0024] Figure 6 It is taken along Figure 5 section line VI-VI of the enlarged sectional view.

[0025] Figure 7 It is Figure 6 an enlarged sectional view of the main part.

[0026] Figure 8 It is an enlarged top view of the manufacturing apparatus of the modified example as viewed from above the rotary die cutter.

[0027] Figure 9 It is taken along Figure 8 section line IX-IX of the enlarged sectional view.

[0028] Figure 10 It is a reference side view for explaining the cause of bending generated at the edge of the workpiece.

[0029] Figure 11 It is a reference side view for explaining the cause. Detailed Description

[0030] [Web]

[0031] The web A1 has flexibility. In addition, from the viewpoint of shape, as Figure 1 shown, the web A1 is in a long strip shape. The long strip shape means a substantially rectangular shape in plan view where the length in the length direction is sufficiently longer than the width direction. The length of the web A1 in the length direction is, for example, 5 m or more, and preferably 10 m or more. In addition, the width direction is a direction orthogonal to the length direction. The web A1 is conveyed along the length direction.

[0032] From the viewpoint of the layer structure, as Figure 2 shown, the web A1 has a support film A2 and a processing film A3 laminated on the support film A2. The processing film A3 is a film that becomes the object for forming the cut lines. The area surrounded by the cut lines in the processing film A3 is finally separated as a workpiece. The support film A2 is a film that supports the area (workpiece) surrounded by the cut lines to prevent accidental separation after the cut lines are formed in the processing film A3.

[0033] The processing film A3 is laminated on the surface of the support film A2 in a peelable state. For example, an adhesive layer A4 that adheres to the processing film A3 with a relatively weak adhesive force is provided on the surface of the support film A2. The processing film A3 is laminated at the interface between the processing film A3 and the adhesive layer A4 in a peelable state. It can also be peeled at the interface between the support film A2 and the adhesive layer A4. In this case, the processing film A3 is peeled from the support film A2 together with the adhesive layer A4. In addition, the processing film A3 and the support film A2 that are laminated in a peelable manner are not limited to the case where the adhesive layer A4 is sandwiched between the two layers. For example, the processing film A3 and the support film A2 can also be virtually bonded directly, so that the processing film A3 and the support film A2 are laminated in a peelable state.

[0034] The support film A2 can be a single-layer structure or a multi-layer structure in which two or more layers are firmly joined. In Figure 2 , a single-layer support film A2 is illustrated. The support film A2 has a mechanical strength such that the web A1 will not break when being conveyed on the production line of the device. The material of the support film A2 is not particularly limited as long as it has the above-mentioned mechanical strength. For example, known resin films, papers, synthetic papers, non-woven fabrics, etc. can be cited.

[0035] The processing film A3 can be a single-layer structure or a multi-layer structure in which two or more layers are laminated. Figure 2 The processing film A3 shown is a single-layer structure. Figure 3 The processing film A3 shown is a multi-layer structure, for example, composed of a five-layer structure. When the processing film A3 is a multi-layer structure, at least one of its layers can be laminated in a peelable manner from other layers, or all layers can be firmly joined in a non-peelable manner.

[0036] The processing film A3 is appropriately selected according to the type of workpiece to be manufactured. For example, the processing film A3 includes an optical functional layer. When the processing film A3 is a multi-layer structure, at least one of its layers can be an optical functional layer and the other layers can be layers other than the optical functional layer (hereinafter referred to as non-optical layers), or all layers can be optical functional layers. In addition, when the processing film A3 is a multi-layer structure including an optical functional layer, at least one of its layers can be laminated in a peelable manner from other layers, or all layers can be firmly joined in a non-peelable manner.

[0037] As the optical functional layer, a polarizer, a retardation layer, a light diffusion layer, a brightness enhancement layer, an antiglare layer, a light reflection layer, etc. can be cited. A polarizer is a layer having the property of transmitting light (polarized light) vibrating in a specific one direction and blocking light vibrating in other directions. A retardation layer is a layer showing optical anisotropy, and typically, stretched films such as acrylic resins, cycloolefin resins, cellulose resins, etc. can be cited. As the non-optical layer, a protective layer, an adhesive layer, a release liner, etc. can be cited. A protective layer is a layer laminated for the purpose of protecting the optical functional layer, and typically, a colorless transparent protective film is used.

[0038] Figure 3 The processed film A3 having the layer structure shown is composed of a first layer A31 / a second layer A32 / a third layer A33 / a fourth layer A34 / a fifth layer A35 in order from the upper side of the paper surface. In the case of this layer structure, in an exemplary processed film A3, for example, the first layer A31 is a first protective layer, the second layer A32 is an optical functional layer such as a polarizer, the third layer A33 is a second protective layer, the fourth layer A34 is an adhesive layer, and the fifth layer A35 is a third protective layer. Further, when the processed film A3 contains an adhesive layer, its adhesive force is larger than the adhesive force between the processed film A3 and the support film A2. Therefore, as described later, when separating the workpiece from the processed film A3, peeling does not occur at the interface of the adhesive layer contained in the processed film A3, and reliable peeling can be performed between the processed film A3 and the support film A2.

[0039] The thickness of the processed film A3 is not particularly limited and can be appropriately set according to the type of workpiece to be formed. For example, the thickness of the processed film A3 is 100 μm or more, preferably 150 μm or more. There is no particular limitation on the upper limit of the thickness of the processed film A3, but generally it is 500 μm or less, preferably 400 μm or less. In particular, in a processed film A3 with a relatively large thickness, bending is likely to occur due to the bounce of the cutting edge, but according to the present invention, even a processed film A3 with a relatively large thickness of, for example, 350 μm or more, a workpiece with suppressed bending can be blanked.

[0040] The thickness of the support film A2 is not particularly limited, but if it is too small, there is a risk of the support film A2 breaking during the conveyance of the web A1 on the outlet side of the rotary die cutter after passing the web A1 through the rotary die cutter. From this viewpoint, the thickness of the support film A2 is, for example, 20 μm or more, preferably 40 μm or more. There is no particular limitation on the upper limit of the thickness of the support film A2, but from the viewpoint of cost effectiveness, it is 100 μm or less, preferably 50 μm or less.

[0041] [Manufacturing apparatus for workpiece]

[0042] Figure 4 The schematic of the manufacturing apparatus 1 for the workpiece is shown. Figure 5is an enlarged top view of the periphery of the rotary die-cutting machine 2 as viewed from the upper side (the side of the die roller 6). However, in Figure 5 the depiction of the rear side and the front side in the conveyance direction of the web A1 is omitted. Figure 6 is an enlarged sectional view taken along a direction orthogonal to the axial direction of the die roller 6 and the anvil roller 7. However, in Figure 6 the depiction of the bearing portion that appears on the inner side of the paper surface is omitted. In each figure, the conveyance direction of the web A1 is indicated by a hollow arrow, and the rotation directions of the die roller 6 and the anvil roller 7 are indicated by thin arrows. The front side in the conveyance direction of the web A1 refers to the starting side when conveying the web A1, and the rear side in the conveyance direction refers to the opposite side thereof.

[0043] The workpiece manufacturing apparatus 1 includes: a rotary die-cutting machine 2 having a die roller 6 and an anvil roller 7; and a conveyance unit 3 that conveys a long strip-shaped web A1 from the inlet side to the outlet side of the rotary die-cutting machine 2. As needed, the manufacturing apparatus 1 may also include a workpiece removal unit 4 that peels the workpiece from the web A1 and a recovery unit 5 that recovers the workpiece.

[0044] <Rotary Die-Cutting Machine>

[0045] The rotary die-cutting machine 2 has a die roller 6 and an anvil roller 7 that are disposed opposite to each other.

[0046] The die roller 6 has: a rotary shaft 61; a cylindrical roller body 62 provided around the rotary shaft 61; a cutting portion 63 provided on the outer peripheral surface of the roller body 62; and bearing portions 64 provided at both end portions of the roller body 62. The rotary shaft 61 of the die roller 6 extends parallel to the width direction of the web A1. Figure 6 The illustrated roller body 62 is solid, but the roller body 62 may also be hollow (not shown). The roller body 62 is rotatable. For example, the roller body 62 can be mounted on the rotary shaft 61 via a bearing or the like so that the roller body 62 can rotate around the axis of the rotary shaft 61, or the roller body 62 can be fixedly mounted on the rotary shaft 61, and the rotary shaft 61 can be mounted on the frame of the apparatus 1 via a bearing or the like so that the roller body 62 can rotate.

[0047] The diameter of the roller body 62 of the die roller 6 can be appropriately set, but for example, it is 80 mm or more and 500 mm or less.

[0048] The cutting portion 63 projects radially from the outer peripheral surface of the roller body 62. One cutting portion 63 punches out one workpiece from the web A1. At least one cutting portion 63 is provided on the outer peripheral surface of the roller body 62 of the die roller 6. Usually, a plurality of cutting portions 63 are provided on the roller body 62. In Figure 5 and Figure 6In the example shown, three cutting parts 63 are provided in the width direction of the roller main body 62, and four are provided in the circumferential direction of the roller main body 62. However, the number of the cutting parts 63 of the die roller 6 is not limited to this. Although the cutting parts 63 are arranged at equal intervals in the circumferential direction and also at equal intervals in the width direction, they may also be arranged without intervals respectively. In addition, a plurality of adjacent cutting parts 63 may be arranged without intervals.

[0049] As Figure 5 shown, when viewed from the radial direction of the roller main body 62, the shape of the tip of the cutting part 63 is a closed ring. The shape of the tip of the cutting part 63 conforms to the contour of the workpiece B. In Figure 5 the example shown, when viewed from the radial direction of the roller main body 62, the shape of the tip of the cutting part 63 is substantially rectangular, and in this case, a workpiece B having a substantially rectangular shape is formed. However, the shape of the tip of the cutting part 63 (the shape of the workpiece B) is not limited to a substantially rectangular shape and can be appropriately set according to the type of the workpiece B to be formed. For example, when forming a workpiece B having an arc-shaped edge, the cutting part 63 has an arc-shaped tip.

[0050] In addition, referring to Figure 6 the sectional view, a double-edge type is illustrated as the cutting part 63, but the cutting part 63 may be a single-edge type or may also be a two-stage edge type (not shown).

[0051] The cutting part 63 includes a tip extending in the width direction. The tip extending in the width direction may extend parallel to the width direction or may extend obliquely with respect to the width direction. In the case of extending obliquely with respect to the width direction, the angle is, for example, 45 degrees or less with respect to the width direction. In Figure 5 the example shown, the cutting part 63 has a first tip 631 and a second tip 632 extending parallel to the width direction of the web A1 and a third tip 633 and a fourth tip 634 extending parallel to the conveying direction of the web A1. The first tip 631 extending in the width direction of the web A1 is the tip located on the rear side in the conveying direction of the web A1, and the second tip 632 extending in the width direction of the web A1 is the tip located on the front side in the conveying direction of the web A1. In other words, the first tip 631 is the tip located on the rear side in the rotation direction of the die roller 6 based on one cutting part 63, and the second tip 632 is the tip located on the front side in the rotation direction of the die roller 6 based on this cutting part 63. Each of the tips 631 to 634 is linear, but as described above, for example, when forming a workpiece B having an arc-shaped edge, at least one or all of the tips are formed in an arc shape.

[0052] The protruding height of the cutting part 63 of the die roller 6 is equal to or greater than the thickness of the processed film A3, for example, 300 μm or more and 1.5 mm or less.

[0053] The anvil roll 7 has a rotating shaft 71 and a cylindrical roll body 72 provided around the rotating shaft 71. The rotating shaft 71 of the anvil roll 7 extends parallel to the width direction of the web A1. Figure 6 The illustrated roll body 72 is solid, but the roll body 72 of the anvil roll 7 may also be hollow. The outer peripheral surface of the roll body 72 of the anvil roll 7 is smooth. The roll body 72 can rotate. For example, the roll body 72 can be mounted on the rotating shaft 71 via a bearing or the like so that the roll body 72 can rotate around the axis of the rotating shaft 71, or the roll body 72 can be fixedly mounted on the rotating shaft 71 and the rotating shaft 71 can be mounted on the frame of the device 1 via a bearing or the like so that the roll body 72 can rotate.

[0054] In addition, a bearing portion (not shown) may be provided at both end portions of the roll body 72 of the anvil roll 7. When a bearing portion is provided on the anvil roll 7, a bearing portion 64 may be provided on the die roll 6, or a bearing portion 64 may not be provided on the die roll 6.

[0055] The diameter of the roll body 72 of the anvil roll 7 can be appropriately set, but for example, it is 70 mm or more and 400 mm or less. The diameter of the roll body 72 of the anvil roll 7 is preferably smaller than the diameter of the roll body 62 of the die roll 6. For example, it is preferably less than the diameter of the roll body 62 of the die roll 6 in the range of more than 0 mm and 100 mm or less. Since the diameter of the anvil roll 7 is smaller than the diameter of the die roll 6, on the outlet side of the rotary die cutter 2, the cutting portion 63 of the die roll 6 can more easily leave the web A1 conveyed along the outer peripheral surface of the anvil roll 7 more quickly.

[0056] When the tip of the cutting portion 63 of the rotating die roll 6 is closest to the rotating anvil roll 7, the cutting portion 63 of the die roll 6 enters the web A1 deepest, and a cutting line C is formed in the web A1. That is, at the portion where the gap between the roll body 62 of the die roll 6 and the roll body 72 of the anvil roll 7 is the smallest, the cutting portion 63 of the die roll 6 enters the web A1 deepest, and a complete cutting line C (the deepest cutting line C) is formed in the web A1. For convenience, this portion is referred to as the "deepest cutting point D". At the deepest cutting point D, the tip of the cutting portion 63 may be in contact with the outer peripheral surface of the anvil roll 7, or may have a slight gap relative to the outer peripheral surface of the anvil roll 7. From the viewpoint of reducing the wear of the tip, as Figure 6 shown, at the deepest cutting point D, the tip of the cutting portion 63 slightly leaves the anvil roll 7 (has a gap). The gap can be appropriately set by adjusting the wall thickness of the bearing portion.

[0057] <Conveying portion>

[0058] The conveying portion 3 conveys the long strip-shaped web A1 along its length direction on the production line of the device 1.

[0059] Refer to Figure 4, the conveying unit 3 has an unwinding unit 31, a guide roller 32 for guiding the web A1, a driving device (not shown), and a guiding roller 33 for displacing the conveying path of the web A1 toward the anvil roller 7.

[0060] The conveying unit 3 conveys the web A1 from the unwinding unit 31 on the inlet side and the outlet side of the rotary die cutter 2. The unwinding unit 31 is a part for loading the web A1 wound in a roll shape. By the driving device, the web A1 is unwound from the unwinding unit 31 onto the production line, guided through the guide roller 32, and guided between the die roller 6 and the anvil roller 7 of the rotary die cutter 2. After coming out of the rotary die cutter 2, the web A1 is guided by the guiding roller 33 toward the anvil roller 7 as described later.

[0061] The guiding roller 33 is a roller for displacing the conveying path of the web A1 toward the anvil roller 7 on the outlet side of the rotary die cutter 2. From another viewpoint, the guiding roller 33 is a roller for guiding the web A1 along the outer peripheral surface of the anvil roller 7 on the outlet side of the rotary die cutter 2. The guiding roller 33 uses, for example, a roller having the same structure as the guide roller 32. For example, as Figure 4 shown, the guiding roller 33 is arranged on the side closer to the anvil roller 7 than the tangent line S of the anvil roller 7 at the deepest cutting point D. The tangent line S is indicated by a thin dotted line.

[0062] <Workpiece taking-out unit>

[0063] The workpiece taking-out unit 4 peels and separates the region (workpiece B) of the processed film A3 formed with the cut line C surrounded by the cut line C from the support film A2. Refer to Figure 4 , the workpiece taking-out unit 4 has a peeling part 41 and a winding part 42 for winding the web A1 after winding and separating the workpiece B. The peeling part 41 is formed of, for example, a plate-like member extending in the width direction having a triangular shape in side view. For example, the entire peeling part 41 is formed in a triangular prism shape. The front end part of the peeling part 41 may be sharp, but from the viewpoint of preventing the breakage of the web A1, it is preferably formed in an arc shape. The winding part 42 winds the web A1 after being reversed by the peeling part 41 and separating the workpiece B into a roll shape and recovers it.

[0064] <Recovery unit>

[0065] The recovery unit 5 recovers the workpiece B separated from the web A1 in the workpiece taking-out unit 4 into a container 51 or the like.

[0066] [Manufacturing method of workpiece]

[0067] Next, the manufacturing method of the workpiece will be described. Regarding the manufacturing method, the case of implementing it using the above-described manufacturing apparatus 1 will be described, but the manufacturing method of the workpiece is not limited to the case of implementing it using the above-described manufacturing apparatus 1.

[0068] The manufacturing method of workpiece B is as follows: a long strip-shaped web A1 is conveyed, and the web A1 is passed between the die roller 6 and the anvil roller 7 of a rotary die-cutting machine 2, whereby a cutting line C that divides the contour of workpiece B is formed on the web A1.

[0069] The web A1 that has formed the cutting line C and has just emerged from the deepest cutting point D between the die roller 6 and the anvil roller 7 is displaced and conveyed toward the anvil roller 7 side. That is, on the outlet side of the rotary die-cutting machine 2, the web A1 is displaced and conveyed toward the anvil roller 7 side.

[0070] In addition, the web A1 that has formed the cutting line C and has just emerged from the deepest cutting point D between the die roller 6 and the anvil roller 7 is conveyed along the outer peripheral surface of the anvil roller 7. That is, on the outlet side of the rotary die-cutting machine 2, the web A1 is conveyed along the outer peripheral surface of the anvil roller 7.

[0071] Figure 7 is a further enlarged Figure 6 cross-sectional view. However, in Figure 7 regarding the blade part 63, not all of it is shown, but only the blade part 63 having a cutting edge (for example, the first cutting edge 631) extending in the width direction is shown.

[0072] Referring to Figures 4 to 7 , the web A1 is unrolled from the uncoiler 31 by the conveying part 3, and on the inlet side of the rotary die-cutting machine 2, the web A1 is introduced between the die roller 6 and the anvil roller 7. When the web A1 is introduced from the inlet side of the rotary die-cutting machine 2, the orientation of the web A1 is not particularly limited, but preferably the web A1 is conveyed in a direction L orthogonal to the line connecting the center 611 of the rotary shaft 61 of the die roller 6 and the center 711 of the rotary shaft 71 of the anvil roller 7, and is passed between the die roller 6 and the anvil roller 7 ( Figure 6 the orthogonal direction L is indicated by a one-dot chain line in Figure 6 ). In other words, on the inlet side of the rotary die-cutting machine 2, the web A1 is introduced between the die roller 6 and the anvil roller 7 parallel to the tangent S of the anvil roller 7 at the deepest cutting point D (

[0073] the tangent S is indicated by a thin dashed line in Figure 6 ). By introducing the web A1 in this orientation, a neat cutting line C can be formed on the web A1.

[0073] The die roller 6 and the anvil roller 7 rotate synchronously with the conveyance of the web A1, and in the plane of the web A1 introduced between the two rollers 6 and 7, a cutting line C that divides the contour of workpiece B is formed by the blade part 63 of the die roller 6. However, the blade part 63 of the die roller 6 does not completely cut the web A1. The blade part 63 of the die roller 6 completely cuts into the processing film A3, but does not completely cut into the support film A2. Not completely cutting into the support film A2 means including the case where no cut is formed on the support film A2, or the case where the support film A2 is slightly cut in the thickness direction (the so-called case where a semi-cutting line is formed on the support film A2). InFigure 6 and Figure 7 In the example shown, a case is illustrated in which the blade portion 63 enters the middle portion in the thickness direction of the support film A2 to form a semi-cutting line in the support film A2.

[0074] Therefore, the entry depth H1 of the blade portion 63 of the die roller 6 with respect to the web A1 satisfies the relationship that the thickness of the processing film A3 ≤ the entry depth H1 of the blade portion 63 of the die roller 6 < the thickness of the web A1. Figure 7 The entry depth H1 is shown therein.

[0075] However, in the case where a semi-cutting line is formed in the support film A2, if the depth of the semi-cutting line is too large, there is a concern that the support film A2 breaks on the outlet side of the rotary die cutter 2. Therefore, in the case where a semi-cutting line is formed in the support film A2, the thickness H2 of the support film A2 corresponding to the semi-cutting line is preferably set to 15 μm or more. Figure 7 The entry depth H1 and the thickness H2 of the support film A2 corresponding to the semi-cutting line are shown therein.

[0076] The conveyance path of the web A1 after forming the cut-in line C and just coming out from the front side in the conveyance direction of the deepest cutting point D is changed toward the anvil roller 7 side by the guide roller 33. Thus, on the outlet side of the rotary die cutter 2, the web A1 is displaced toward the anvil roller 7 side and conveyed, whereby the web A1 having the cut-in line C is conveyed along a part of the outer peripheral surface of the anvil roller 7. In particular, it is preferable that there is a range in which the web A1 is conveyed along a part of the outer peripheral surface of the anvil roller 7 even after the tip 631 of the blade portion 63 completely leaves the web A1. Thus, by conveying the web A1 along the outer peripheral surface of the anvil roller 7, on the outlet side of the rotary die cutter 2, the web A1 is conveyed in a curved surface shape that bulges on the die roller 6 side along the outer peripheral surface of the anvil roller 7.

[0077] In addition, the expression "the outlet side of the rotary die cutter 2" also includes, in terms of interpretation, a region that is on the front side in the conveyance direction of the web A1 and far from the die roller 6 compared to the deepest cutting point D, but the outlet side of the rotary die cutter 2 here refers to the region of the outlet side of the rotary die cutter 2 that includes the deepest cutting point D and is sandwiched between the die roller 6 and the anvil roller 7.

[0078] Preferably, the web A1 having the cut-in line C is conveyed on the outlet side of the rotary die cutter 2 in such a manner that the workpiece B (the region surrounded by the cut-in line C) does not separate from the web A1.

[0079] When the web A1 is conveyed toward the anvil roller 7 side, the conveyance angle α of the web A1 on the outlet side of the rotary die cutter 2 is, for example, more than 0 degree and 90 degrees or less, and preferably 5 degrees or more and 80 degrees or less. Figure 6The conveying angle α is shown. On the outlet side of the rotary die-cutting machine 2, if the conveying angle α of the web A1 is too large, there is a concern that a part of the workpiece B may separate (peel off) from the web A1 during conveyance along the outer peripheral surface of the anvil roll 7. The conveying angle α refers to the angle formed between the tangent line S of the anvil roll 7 at the deepest cutting point D and the web A1. However, since the portion of the web A1 along the outer peripheral surface of the anvil roll 7 forms an arc shape, the conveying angle α refers to the angle formed between the tangent line S of the anvil roll 7 at the deepest cutting point D and the portion of the web A1 that leaves the outer peripheral surface of the anvil roll 7 and becomes linear.

[0080] In another aspect, as Figure 7 shown, it is preferable to convey the web A1 toward the anvil roll 7 side so as to create a gap F between the cutting portion 63 and the web A1 at the deepest cutting point D. On the outlet side of the rotary die-cutting machine 2, if the web A1 is conveyed parallel to the tangent line S of the anvil roll 7 at the deepest cutting point D, no gap is created between the cutting portion 63 that enters the web A1 and the web A1. However, by conveying the web A1 along the outer peripheral surface of the anvil roll 7, a substantially V-shaped gap F is created between the cutting portion 63 and the web A1 at the deepest cutting point D.

[0081] According to the manufacturing method of the present invention, the web A1 is displaced and conveyed toward the anvil roll 7 side on the outlet side of the rotary die-cutting machine 2. Therefore, when the tip (for example, the first tip 631) of the cutting portion 63 located at the deepest cutting point D describes an arc and advances by the rotation of the die roll 6, the web A1 will move away from the tip. Therefore, the phenomenon of the tip of the cutting portion 63 bouncing up the edge portion of the workpiece B can be suppressed. In particular, by displacing and conveying the web A1 toward the anvil roll 7 side to such an extent that a gap F is created between the cutting portion 63 and the web A1 at the deepest cutting point D, the bouncing of the tip against the workpiece B can be further suppressed. Thereby, the generation of bending and wrinkles at the edge portion of the workpiece B can be suppressed.

[0082] In addition, on the outlet side of the rotary die-cutting machine 2, the web A1 is conveyed along the outer peripheral surface of the anvil roll 7. Therefore, the web A1 is formed into a curved surface shape that bulges toward the die roll 6 side and is conveyed. Thus, even if the edge portion of the workpiece B is slightly bounced up by the tip of the cutting portion 63 and the edge portion of the workpiece B is slightly bent toward the die roll 6 side, during the period when the web A1 is along the outer peripheral surface of the anvil roll 7, the web A1 will bend in the direction opposite to the bending caused by the tip. Therefore, the bending caused by the tip can be offset, and a workpiece B in which bending and wrinkles are difficult to generate at the edge portion can be obtained.

[0083] After forming the cutting line C, the web A1 is conveyed to the workpiece take-out portion 4, and the workpiece B is separated from the web A1. The obtained workpiece B is recovered in the recovery portion 5.

[0084] In addition, in the above, on the production line of a manufacturing apparatus 1, a forming process for forming a cut line C in a web A1, a separating process for separating a workpiece B from the web A1, and a recovering process for recovering the workpiece B are carried out. However, the forming process, the separating process, and the recovering process for the cut line C may also be carried out on different production lines. For example, after the web A1 is conveyed to a rotary die cutter 2 and the cut line C is formed in the web A1, the web A1 may be temporarily wound into a roll shape and transferred to another production line to separate and recover the workpiece B from the web A1.

[0085] [Other Embodiments]

[0086] In the above embodiment, a plurality of knife parts 63 independent of each other are provided on the die roller 6. However, for example, as Figure 8 and Figure 9 shown, the adjacent knife parts 63 may also be arranged without an interval. In the illustrated example, the knife parts 63 adjacent in the width direction also serve as cutting edges extending parallel to the conveying direction of the web A1, and the knife parts 63 adjacent in the circumferential direction also serve as knife parts 63 extending parallel to the width direction. In this case, the cutting edge 636 extending in the width direction of the web A1 is a cutting edge located on the rear side in the conveying direction of one knife part 63, and also becomes a cutting edge located on the front side in the conveying direction of the knife part 63 adjacent to the knife part 63.

[0087] Description of Reference Numerals

[0088] 1 Manufacturing apparatus for workpiece

[0089] 2 Rotary die cutter

[0090] 3 Conveying part

[0091] 33 Guide roller

[0092] 6 Die roller

[0093] 61 Rotating shaft of die roller

[0094] 611 Center of rotating shaft of die roller

[0095] 7 Anvil roller

[0096] 71 Rotating shaft of anvil roller

[0097] 711 Center of rotating shaft of anvil roller

[0098] A1 Web

[0099] A2 Support film

[0100] A3 Processing film

[0101] B Workpiece

[0102] C Cut line

Claims

1. A method for manufacturing a workpiece, wherein a long strip of web material is conveyed and passed between a die roller and an anvil roller of a rotary die-cutting machine having a die roller and an anvil roller, thereby forming a cutting line on the web material to divide the contour of the workpiece, characterized in that: At the exit side of the rotary die cutter, the web is displaced and conveyed toward the anvil roll side.

2. A method for manufacturing a workpiece, wherein a long strip of web material is conveyed and passed between a die roller and an anvil roller of a rotary die-cutting machine having a die roller and an anvil roller, thereby forming a cutting line on the web material to divide the contour of the workpiece, characterized in that: At the exit side of the rotary die cutter, the web is conveyed along the outer peripheral surface of the anvil roll.

3. The method for manufacturing a workpiece according to claim 1 or 2, characterized in that: On an exit side of the rotary die cutter, the web is conveyed in a manner that does not cause the workpiece to separate from the web.

4. The method for manufacturing a workpiece according to claim 1 or 2, characterized in that: The web material comprises a support film and a processing film laminated on the support film, The die roll is used to form the cutting line on the processing film in a manner that does not completely cut into the supporting film.

5. The method for manufacturing a workpiece according to claim 1 or 2, characterized in that: On the inlet side of the rotary die cutter, the web is conveyed in a direction orthogonal to a line connecting the centers of the rotation axes of the die roll and the anvil roll, and passes between the die roll and the anvil roll.

6. A workpiece manufacturing device, comprising: a rotary die cutter having a die roll and an anvil roll; and A conveying section conveys the long strip of web material from the inlet side to the outlet side of the die roller, The web is passed between the die roller and the anvil roller by the conveying section, thereby forming a cutting line dividing the contour of the workpiece, characterized in that: The conveying section includes an induction roller that shifts a conveying path of the web toward the anvil roller at an exit side of the rotary die cutter.

7. The workpiece manufacturing device according to claim 6, characterized in that: The conveying section conveys the web material at an exit side of the rotary die cutter in a manner that does not separate the workpiece from the web material.

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