JP4278794B2 - Metal plate processing apparatus, metal plate processing method, and metal plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal plate processing apparatus, a metal plate processing method, and a metal plate. In particular, for example, a lithographic printing plate capable of improving the aesthetics of a printing paper surface by processing (particularly processing of an end portion), and such The present invention is applied to a planographic printing plate processing apparatus and a planographic printing plate processing method for obtaining a planographic printing plate.
[0002]
[Prior art]
Photosensitive lithographic printing plates (hereinafter referred to as “PS plates” where appropriate) are generally subjected to surface treatments such as graining, anodizing, silicate treatment, and other chemical conversion treatments on a support such as a sheet-like or coil-like aluminum plate. Are performed alone or in appropriate combination, and then, after the photosensitive solution is applied and dried, it is cut into a desired size. This PS plate is subjected to plate making processing such as exposure, development processing, and gumming, and is set in a printing machine, and ink is applied to print characters, images, and the like on the paper surface.
[0003]
Such PS plates include, for example, those described in Japanese Patent Application Laid-Open No. 10-100556. In addition to this, for example, the applicant of the present application has proposed in Japanese Patent Application No. 10-42014. Thus, what is used as what is called discarding is also included. In the case of being used as a discarded plate as described above, it is preferable that the photosensitive layer is unnecessary or not, and therefore, the PS plate referred to here also includes a photosensitive layer that is not coated. Alternatively, the photosensitive layer may be coated on both sides of an aluminum support. Furthermore, PS plates used for digital printing plates such as photopolymer and thermal are also included.
[0004]
In printing using such a PS plate, when printing is performed on a printing paper smaller than the size of the PS plate using a general commercial printing machine, and larger than the size of the PS plate, such as newspaper printing, for example. There is a case of printing on printing paper. In the latter, since the entire surface of the PS plate is used as the printing surface, the ink adhering to the cutting edge (peripheral portion) of the PS plate is printed on the printing paper surface and becomes dirty, which may impair the commercial value of the printed matter. .
[0005]
As a method for preventing the printing paper surface from being stained by unnecessary ink on the PS plate, for example, as described in Japanese Patent Publication No. 57-46754, the corners of the end portion of the support made of aluminum are frayed. A method of scraping with a knife or a method of applying a desensitizing solution to a cut surface as described in JP-B-62-61946 is known.
[0006]
Further, as described in JP-A-62-19315, there is a method in which burrs generated at the time of cutting do not generate burrs on the printing surface side due to one cause of this stain. Furthermore, Japanese Patent Laid-Open No. 7-32758 proposes that an improvement tendency can be seen by making the cut end portion bent to the opposite side to the printing surface.
[0007]
[Problems to be solved by the invention]
However, the above-described method of scraping the corners of the end of the support with a file or knife requires the PS plates to be taken out one by one and is not suitable for mass processing. In addition, if there is a defect that causes ink adhesion such as burrs or scratches, the ink is entangled with the shaved portion, and the printing paper surface may eventually become dirty with this ink. Also, the method of applying a desensitizing oil to the cut surface may cause the PS plates to stick to each other, resulting in poor handling or development failure.
[0008]
In addition, if the burrs are not generated on the printing paper side during cutting, stains will be generated depending on the printing conditions, and if the cutting edge is bent downward (opposite to the printing surface), the stain tends to improve. There is a case where a conveyance failure such as a catching problem occurs during conveyance on a plate making machine for performing exposure development.
[0009]
As an improvement measure instead of these, when the PS plate is sheared by a slitter, a cutter, etc., it is effective to form a notch due to a so-called shear at the edge of the surface treatment layer simultaneously with the shearing. No. 5-104871, JP-A-8-11451, JP-A-9-53465, JP-A-9-323486, JP-A-10-35130, JP-A-10-100246 and the like.
[0010]
However, if an effective notch for preventing stains on the printing paper surface is formed by shearing using a slitter, cutter, etc., large burrs will be formed on the back surface (the surface opposite to the surface on which the surface treatment layer is formed). May occur. If this burr protrudes from the back surface, for example, when the PS plate is transported in the exposure machine, the PS plate meanders, or the burr is lost to become dust. Further, during the shearing, a large crack is generated on the surface (surface on which the surface treatment layer is formed), which may affect the printed matter.
[0011]
  In order to eliminate such inconvenience, for example, it is conceivable to perform processing in the coil manufacturing process, such as forming a notch in the stage before forming the surface treatment layer on the support. However, in such a manufacturing method, the coil width is set for each PS plate size and post-processing is performed.Have toDon't be. In particular, the PS plate has a large number of sizes, and it is difficult to set the coil width for each size. Further, there are cases where a plurality of PS plates are formed in the width direction from a long web. However, in the above-described manufacturing method, only one PS plate can be manufactured in the width direction of the web. descend.
  Also, a recess corresponding to a notch may be formed immediately before the PS plate is cut with a slitter, cutter, etc.ConceivableHowever, if the notch formation and cutting are performed in separate processes in this way, the cutting position by the slitter, cutter, etc. and the position of the recess (notch) may be misaligned, resulting in reduced processing accuracy and increased processing efficiency. Or drop. In addition, in addition to the slitter and cutter, a member for forming the recess is required separately.
[0012]
Such inconvenience occurs not only in the PS plate but also in the case of cutting a general metal plate and forming a notch at the cut end.
[0013]
In consideration of the above facts, the present invention provides a metal plate in which a burr on the back surface is small and a notch of a necessary and sufficient size is formed with high positional accuracy by cutting, and to obtain such a metal plate. It is an object to obtain a metal plate cutting device and a metal plate cutting method.
[0014]
[Means for Solving the Problems]
  In invention of Claim 1, a metal plate is used.With upper and lower bladesClamp in the thickness directionAt the pinched positionA cutting member to be cut, and a product side that is a product cut by the cutting member, and adjacent to the cutting member and arranged integrally with the cutting member so as to be able to contact and separate from the metal plate, and press the metal plate from the surface And a first pressing member that forms a surface-side inclined surface that is continuously recessed from the surface and inclined with respect to the surface.
[0015]
  That is, in this metal plate processing apparatus, the first pressing member can be brought into contact with and separated from the metal plate integrally with the cutting member. Therefore, when processing a metal plate, the cutting memberWith upper and lower bladesSandwich a metal plate in the thickness direction,At this pinched position,The first pressing member presses the metal plate while cutting. Since the 1st press member is arranged on the product side used as the product by cutting by the cutting member, and adjacent to the cutting member, the product side of the metal plate is continuous from the surface and with respect to the surface. An inclined surface-side inclined surface is formed adjacent to the cutting edge. And this surface side inclined surface becomes the notch of a metal plate as a result.
[0016]
As described above, the notch (surface-side inclined surface) is formed by the first pressing member, and the metal plate is cut by the cutting member. Therefore, it is not necessary to generate shear droop at the time of cutting by the cutting member to form the notch. . Therefore, the metal plate can be cut even under conditions where shear droop is reduced during cutting, and burrs can be reduced (preferably not generated). In addition, it is possible to easily form a surface-side inclined surface having a necessary and sufficient size by reliably pressing with the pressing member. In particular, even when a planographic printing plate covered with a surface treatment layer including an anodized layer is used as a metal plate, a notch having a necessary and sufficient size can be formed, and the appearance of the printing paper surface can be improved. It becomes possible to improve.
[0017]
Moreover, the cutting member and the first pressing member can be integrally contacted and separated from the metal plate. For this reason, the cutting position by a cutting member and the position of the surface side inclined surface formed by the 1st press member do not shift, and a metal plate can be processed with high accuracy.
[0018]
In the present invention, “cutting” means cutting through a metal plate in a thickness direction at a predetermined position, for example, cutting a web of a long planographic printing plate along the width direction. In addition, it includes cutting such a long web along the longitudinal direction (so-called cutting), cutting in an oblique direction, and the like.
[0019]
According to a second aspect of the present invention, in the first aspect of the present invention, the invention further includes a bulging permission portion that is provided on the cutting member and allows bulging in a direction along the surface of the metal plate by pressing. It is characterized by that.
[0020]
  Therefore, the metal plate partially flows by the pressing by the first pressing member,Part of metal plateBulges in the direction along the surface and enters the bulging allowance portion. In this way, bulging due to the flow of the metal plate at the time of pressing is allowed by the bulging allowing portion, so that even if the pressing force by the pressing member is small, the surface side of the lithographic printing plate is surely pressed, and the inclined surface Can be formed.
[0021]
Further, by causing a part of the metal plate to escape to the bulging allowance portion, it is possible to effectively prevent the generation of burrs due to cutting or pressing.
[0022]
According to a third aspect of the present invention, in the second aspect of the invention, the first pressing member is disposed at a position where the first pressing member enters the bulging allowance portion with respect to the cutting portion of the cutting member. .
[0023]
For this reason, the portion of the metal plate that bulges by pressing is inserted so as to be pushed into the bulging allowance portion by the first pressing member. Thereby, generation | occurrence | production of the burr | flash by cutting | disconnection or a press can be prevented further effectively.
[0024]
In invention of Claim 4, in invention in any one of Claims 1-3, it arrange | positions in the back surface side which pinched | interposed the said metal plate corresponding to the said press member, and at the time of the cutting | disconnection by the said cutting member It has the 2nd press member which presses a metal plate from a back surface, and dents and forms an indentation in a back surface.
[0025]
That is, the metal plate is pressed from the back surface by the second pressing member, and an indentation is formed on the back surface of the metal plate. For this reason, even if burrs are slightly generated from the back surface of the metal plate due to cutting, the protruding amount of the burrs is smaller than that of the metal plate in which such indentations are not formed (preferably substantially Will not protrude from the back).
[0026]
In addition, the 2nd press member can also be set as the structure which served as a part of cutting member, and can reduce a number of parts by this.
[0027]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the cutting member rotates along the transport direction with respect to the metal plate transported in a fixed direction. The pressing member is a rotary pressing member that is arranged coaxially with the rotary blade and rotates along the conveying direction of the metal plate.
[0028]
Therefore, when the rotary blade rotates, the metal plate is cut at a predetermined position along the transport direction. Moreover, an inclined surface is formed adjacent to the cutting position on the product-side surface of the metal plate by rotating the rotary pressing member disposed coaxially with the rotary blade. And it can cut | disconnect and process efficiently by cut | disconnecting and processing continuously, conveying a metal plate to a fixed direction.
[0029]
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, at least one pair of the rotary pressing members is provided at a substantial gap in the center in the width direction perpendicular to the conveying direction of the metal plate. And at least a pair of the rotary blades movably in the width direction in the gap, and biasing means for biasing the pair of rotary blades in a direction away from each other in the gap. And
[0030]
Therefore, in a state where the pair of rotary blades are disposed in the gap between the rotary pressing members, the rotary blades are biased in a direction away from each other by the biasing force of the biasing means, and each of the rotary blades is positioned adjacent to the corresponding rotary pressing member. It becomes. For this reason, the rotary blade is accurately positioned in the axial direction (width direction orthogonal to the conveying direction of the metal plate) with respect to the rotary pressing member, and the rotary member is cut at a position adjacent to the cutting position by the rotation of the rotary blade. A surface side inclined surface is formed.
[0031]
When attaching or detaching the rotary blade, the rotary blades are moved toward each other against the biasing force of the biasing means. As a result, the rotary blades are separated from the corresponding rotary pressing members, so that the rotary blades can be attached and detached without causing interference with the rotary pressing members.
[0032]
  The invention according to claim 7 is a metal plate processing method for processing a metal plate by the metal plate processing apparatus according to claim 1, wherein the metal plate is cut into the cutting member.With upper and lower bladesWith the sheet thickness directionAt the pinched positionA cutting step of cutting, and a pressing step of pressing the metal plate with the first pressing member to form a surface-side inclined surface at a position adjacent to the cutting position by the cutting step.
[0033]
  That is,In the cutting step, the metal plate is sandwiched between the upper blade and the lower blade of the cutting member in the thickness direction, and the metal plate is cut at the sandwiched position. In the pressing process,A first pressing member that is integrated with the cutting member and that contacts and separates from the metal plate is used, and the pressing step is performed at a position adjacent to the cutting position by the cutting step. Thus, a surface-side inclined surface that is continuous from the surface and inclined with respect to the surface is formed adjacent to the cutting edge on the product side of the metal plate. And this surface side inclined surface becomes the notch of a metal plate as a result. Since the notch (surface-side inclined surface) is formed by the first pressing member and the metal plate is cut by the cutting member, it is not necessary to form a notch by generating shear dripping when cutting by the cutting member. Therefore, the metal plate can be cut even under conditions where shear droop is reduced during cutting, and burrs can be reduced (preferably not generated).
[0034]
In addition, since the cutting member and the first pressing member that can be integrally contacted and separated from the metal plate are used and the pressing step is performed at a position adjacent to the cutting position by the cutting step, the cutting position by the cutting member, The position of the surface-side inclined surface formed by the first pressing member is not shifted, and the metal plate can be processed with high accuracy.
[0035]
  In the invention according to claim 8, the cutting memberWas sandwiched between the upper and lower blades in the thickness direction, and was sandwichedBy being cut at a position, a desired shape is obtained, and at a position adjacent to the cutting position by the cutting member, it is continuously pressed from the surface in the vicinity of the cutting edge by being pressed by a pressing member that comes in contact with and separates from the cutting member. And the surface side inclined surface inclined with respect to the surface is formed.
[0036]
  That is, this metal plateCut at the position sandwiched between the upper blade and lower blade in the thickness direction,A surface-side inclined surface that is continuous from the surface and inclined with respect to the surface is formed in the vicinity of the cutting edge by the pressing member that contacts and separates integrally with the cutting member. Since the surface side inclined surface is formed at the position adjacent to the cutting position by the cutting member using the pressing member and the cutting member that are integrally contacted and separated as described above, the cutting edge and the surface side inclined surface are positioned. It is not shifted and becomes a metal plate on which the surface side inclined surface is formed with high accuracy. In particular, for example, when the metal plate is a lithographic printing plate, the printing paper surface is not soiled, and the lithographic printing plate is excellent in handling.
[0037]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a processing line 90 including a cutting unit 10 for cutting and processing a planographic printing plate as an example of the metal plate processing apparatus according to the first embodiment of the present invention.
[0038]
On the upstream side (upper right side in FIG. 1) of the processing line 90, a feeder 14 for sequentially unwinding webs wound in advance in a roll shape is disposed. When the elongate web 12 sent out from the delivery machine 14 is curled and corrected by the leveler 15 and reaches the feed roller 16, the interleaf paper 18 is pasted and brought into close contact by charging to reach the notch 20.
[0039]
The notch 20 is provided with a punched portion on the web 12 so that the upper blades 48 and 50 of the cutting roller 24 constituting the cutting portion 10 (see FIG. 2) can move in the width direction of the web 12 at the punching position. To do. Accordingly, it is possible to change the cutting width of the web 12 while continuously cutting the web 12 and the interleaf paper 18 together. Hereinafter, the “width direction” simply refers to the width direction of the web 12, and “inside” and “outside” refer to the inside and outside of the web 12 in the width direction, respectively.
[0040]
The cutting waste 86 generated by cutting by the cutting processing unit 10 is sent to a chopper (not shown) and cut into small pieces, and then collected in a collection box 84 by a collection conveyor 82, and the interleaf paper 18 is sucked by a suction pipe 23. .
[0041]
In the processing line 90 of the present embodiment, the cutting unit 21 and peripheral members (not shown) constitute a cutting unit 21 and two sets of the cutting units 21 are prepared. Thereby, setup operations such as blade replacement can be performed by the unused cutting unit 21 outside the line, and the line stop time of the processing line 90 can be minimized.
[0042]
In this manner, the web 12 cut to a predetermined cutting width is detected by the length measuring device 26 and cut by the running cutter 28 at the instructed timing. Thereby, the PS plate 30 having the set size is manufactured.
[0043]
Next, the PS plate 30 is sent to the stacking unit 34 by the conveyor 32 and stacked a predetermined number of times to form a stack 31. In the stacking unit 34, a protective sheet (generally referred to as “hit ball”) made of cardboard or the like can be disposed on the upper or lower side or one side of the stack 31.
[0044]
Then, the stack 31 is stacked on the pallet 33 through the transport unit 35. Then, it is sent to a storage such as a rack warehouse or a packaging process, and packaged with a packaging material (tape, interior material, exterior material, etc.). It is also possible to stack on skids (flat stand skids, vertical skids, etc.) for automatic plate making machines. In addition, when stacking and packaging on these skids, an accumulation device for accumulating the bundles 31 on the skids may be provided in the processing line 90, and the accumulation lines 31 may be directly accumulated in the skids.
[0045]
Thus, the PS plate 30 is packaged and shipped, but depending on the packaging form, the interleaf paper 18 and other packaging materials may be omitted.
[0046]
As shown in FIG. 2, the cutting unit 10 includes a cutting roller 24 that cuts the web 12 at a predetermined position in the width direction, a pressing roller 22 that presses the web 12 from the surface 12A when cutting by the cutting roller 24, and cutting. A receiving roller 40 is disposed between the rollers 24.
[0047]
The cutting roller 24 corresponds to the upper blades 48, 50 provided in the vicinity of the width direction end of the web 12 and substantially at the center on the surface 12 A side of the web 12, and the upper blades 48, 50 correspond to the upper blades 48, 50. And lower blades 54 and 56 provided on the back surface 12B side.
[0048]
As shown in detail in FIG. 3, the upper blade 48 in the vicinity of the end is formed in a substantially trapezoidal shape with a flat trapezoidal shape when viewed from the front, and is arranged so that the large diameter side faces the inner side in the width direction of the web 12. ing. Further, the upper blade 48 has a predetermined position and diameter so that the lowermost portion is located below the rear surface 12B of the web 12, and a cutting portion (trimming) for cutting (trimming) the web 12 by rotation ( Cutting part).
[0049]
  The upper blade 50 in the center in the width direction is formed in a substantially flat plate shape that is flatter than the upper blade 48 in the vicinity of the end portion.ofA pair is provided such that the large-diameter side faces the outside in the width direction of the web 12. The upper blade 50 also has a predetermined diameter so that the lowermost part is located below the back surface 12B of the web 12, and a cutting part (cutting part) for cutting (cutting out) the web 12 by rotation. It has become. Further, the upper blade 50 is movable in the width direction, and a disc spring 52 is disposed between the upper blades 50 to urge the upper blades 50 in a direction away from each other.
[0050]
As shown in FIG. 3, the upper blades 48 and 50 are formed with a recess 58 having a constant radius from the center line C and extending from the large diameter side (left side in FIG. 3) to the small diameter side (right side in FIG. 3). The substantial area of the end face on the large diameter side is small. When the upper blades 48 and 50 are polished and reused, if such a recess 58 is not formed, the entire large-diameter side end surface must be polished. However, since the recess 58 is formed, As a result, the polishing area becomes an outer portion of the recess 58, the polishing area is reduced, and polishing can be performed efficiently.
[0051]
As shown in detail in FIG. 4, the upper blades 48 and 50 are formed with a polishing recess 60 having a thickness reduced further from the large diameter side to the small diameter side at the outermost peripheral portion of the recess 58. When the concave portions 58 of the upper blades 48 and 50 are polished, a tool (grinding stone or the like) can be polished without causing interference with the upper blades 48 and 50.
[0052]
As shown in detail in FIG. 5, an annular relief recess 62 in which the upper blades 48 and 50 are partially thinned from the large diameter side toward the small diameter side is formed on the outer periphery of the recess 58. As will be described later, when the pressing roller 22 presses the web 12 at the time of cutting, a part of the pressed web 12 enters the escape recess 62 and the deformation flow of the web 12 is allowed.
[0053]
Further, the large-diameter side end surfaces of the upper blades 48 and 50 are such that the radially inner portion 64 (upper side in FIG. 5) is closer to the smaller diameter side than the radially outer portion 66 (lower side in FIG. 5). Are offset by a predetermined offset amount C1.
[0054]
As shown in FIG. 2, the lower blade 54 provided in the vicinity of the end in the width direction is formed in a flat cylindrical or columnar shape having a certain diameter, and supports the upper blade 48 while supporting the web 12. It cuts in between. The relative position of the lower blade 54 with respect to the upper blade 48 is set to a predetermined position so that burrs generated by shearing are reduced (preferably not generated) on the back surface 12B of the web 12 at the time of cutting.
[0055]
A receiving roller 42 having a reduced diameter portion 68 that is smaller in diameter than the lower blade 54 as a whole and gradually reduced inward in the width direction is provided at the end in the width direction of the lower blade 54. When the web 12 is sandwiched between the upper blade 48 and the lower blade 54 and cut, the end portion of the web 12 is bent toward the reduced diameter portion 68 while being supported by the receiving roller 42 as shown in FIG. It can be easily cut.
[0056]
On the other hand, in the lower blade 56 provided substantially at the center in the width direction, a flat cylindrical or columnar roller having the same diameter as that of the lower blade 54 at the end is opposed to each other with a predetermined gap 72 therebetween. It is constituted by. Then, the upper blade 50 enters the gap 72 and is urged by the disc spring 52 in the direction of separating the upper blade 50 from each other, whereby the upper blade 50 is positioned from the inside to the lower blade 56 or a positioning member provided separately. The two upper blades 50 are in contact with each other (not shown), and are positioned adjacent to the lower blades 56 at regular intervals. In this way, by setting the upper blade 50 adjacent to the lower blade 56, the back surface 12B of the web 12 during cutting is reduced (preferably not generated) due to shear. Further, when the upper blade 50 is attached or detached, the upper blade 50 is moved in a direction approaching each other against the biasing force of the disc spring 52. Thereby, since the upper blade 50 is spaced apart from the lower blade 56, the upper blade 50 can be attached and detached without the upper blade 50 and the lower blade 56 interfering with each other to cause a chipping or the like.
[0057]
The lower blade 56 is sandwiched between the upper blade 50 and cut while supporting the web 12. At this time, since the portion punched by cutting (cutting waste 86) enters the gap 72, it can be easily cut. The web 12 cut in this way has a PS plate 30 in which the portion between the upper blade 48 and the upper blade 50 (the portion left uncut by cutting) is the final product (see FIG. 9A). It becomes.
[0058]
As shown in FIG. 2, the pressing roller 22 is arranged adjacent to each of the upper blades 48 and 50 so as to be positioned on the surface 12A side of the web 12 and on the side of the PS plate 30 as a final product. Has been. Each of the pressing rollers 22 is formed in a flat trapezoidal substantially dish shape when viewed from the front, and is attached so that the end surface on the large diameter side is in close contact with the upper blade 48 or the upper blade 50.
[0059]
As shown in FIG. 5, the outer peripheral surface of the pressing roller 22 is an inclined portion 70 that is inclined at a constant inclination angle θ with respect to the surface 12 </ b> A of the web 12 when positioned at the lowest side. When the web 12 is cut by the upper blade 48 and the lower blade 54 or the upper blade 50 and the lower blade 56, the inclined portion 70 presses the web 12 in the vicinity of the cutting edge, and a predetermined inclined surface 74 is formed on the web 12. As described above, the pressing roller 22 has a predetermined diameter.
[0060]
Further, as can be seen from FIG. 5, the radially inner portion 64 of the upper blades 48, 50 is offset by a predetermined offset amount C <b> 1 toward the smaller diameter side from the radially outer portion 66, and a part of the pressing roller 22. Substantially enters the escape recess 58. For this reason, when the pressing roller 22 presses the web 12, the web 12 is also pressed from above in the escape recess 58, and enters the escape recess 58 so as to be positively pushed.
[0061]
As shown in FIG. 2, the upper blades 48 and 50 and the pressing roller 22 are each attached to one shaft 78 and rotate at the same speed in the same direction as the conveying direction of the web 12. Similarly, the lower blade 54 and the receiving roller 40, and the lower blade 56 and the receiving roller 42 are respectively attached to one shaft 80, and are in the same direction as the conveying direction of the web 12 (the upper blades 48 and 50 and the pressing roller 22 and Rotates in the reverse direction) at the same speed. The shafts 78 and 80 at both ends in the width direction are attached to a base 46 that moves in the width direction of the web 12 along the rail 44.
[0062]
The number of the cutting rollers 24 and the pressing rollers 22 is determined by how many PS plates 30 are taken in the width direction of the web 12. In the present embodiment, as an example, the case where two PS plates 30 are taken in the width direction is shown, and therefore, the web 12 is provided at approximately the center in the width direction and approximately at the center in the width direction. In general, when N PS plates 30 are taken in the width direction of the web 12, the number of the cutting rollers 24 and the pressing rollers 22 is 2N, but the ears (width direction end portions) of the web 12 are already inclined surfaces 74. When it is not necessary to cut the web 12 in the vicinity of the end in the width direction due to the reason (see FIG. 14A), the numbers of the cutting rollers 24 and the pressing rollers 22 are (2N− 2).
[0063]
Next, a method of cutting the web 12 using the processing line 90 having the cutting processing unit 10 of the present embodiment will be described.
[0064]
As shown in FIG. 1, when the web 12 conveyed in the processing line 90 reaches the cutting section 10, it is further conveyed while being supported by the lower blades 54 and 56 and the receiving roller 40 as shown in FIG. . Then, the web 12 is sandwiched between the upper blades 48 and 50 and the lower blades 54 and 56 and is subjected to a shearing force, and is cut at a predetermined position (cutting process) as shown in FIG. The part becomes punching waste 86. The cutting waste 86 is conveyed by the collection conveyor 82 and collected in the collection box 84. In addition, a winding device (not shown) may be provided to sequentially take up the chips 78 in a roll shape.
[0065]
At this time, since the pressing roller 22 rotates integrally with the upper blade 48 or the upper blade 50 and the inclined portion 70 presses the web 12 from the surface 12A side, as shown in detail in FIG. 12 is partially deformed, and an inclined surface 74 that is continuous with the surface 12A and is inclined at a predetermined inclination angle θ with respect to the surface 12A is formed on the cutting edge.
[0066]
Further, the deformed support body (aluminum) of the web 12 enters the relief recess 58 formed in the upper blades 48 and 50. Thereby, since the deformation | transformation flow of the support body of the web 12 is accept | permitted, even if the pressing force of the press roller 22 is small, the web 12 can be deform | transformed reliably.
[0067]
The web 12 thus cut at a predetermined position is further conveyed and cut by the running cutter 28 to form the inclined surface 74 and to obtain the PS plate 30 having a desired size.
[0068]
Thus, in the cutting part 10 of this embodiment, the member (pressing roller 22) that forms the inclined surface 74 on the web 12 and the member (cutting roller 24) that cuts (cuts) the web 12 at a desired position. The PS plate 30 having the desired inclined surface 74 can be obtained without forming shear droop by cutting. That is, the shear condition can be reduced (preferably not generated at all) by cutting (cutting), and the PS plate 30 is sheared so that the burr on the back surface is decreased (preferably not generated at all). be able to. Moreover, the pressing roller 22, which is substantially partially disposed in the escape recess 62, pushes the support (such as aluminum) of the web 12 into the escape recess 62, thereby generating burrs more effectively. Can be prevented. If the amount of protrusion of the burr from the back surface 12B can be made substantially unproblematic, a part of the pressing roller 22 is not arranged in the escape recess 62, or further, the escape recess 62 itself may not be formed.
[0069]
Since the desired inclined surface 74 is formed on the PS plate 30, when printing is performed using the PS plate 30, unnecessary ink does not adhere to the printing paper surface, and the quality of the printed matter can be maintained high. Further, since the burr on the back surface is reduced (preferably not generated), for example, when the PS plate 30 is transported in the exposure machine, the PS plate 30 meanders, or the burr is missing and becomes dust. The PS plate 30 is excellent in handling.
[0070]
In addition, in the cutting processing unit 10 of the present embodiment, the upper blade 48 of the cutting roller 24 and the pressing roller 22 are fixed in the axial direction and integrally rotated, so that the cutting portion of the upper blade 48 and the pressing roller 22 are rotated. The pressing portion (inclined portion 70) is approached or separated from the web 12. For this reason, the relative positions of the upper blade 48 and the pressing roller 22 with respect to the web 12 do not shift, and the cutting position and the position of the inclined surface 74 do not shift. Therefore, the PS plate 30 having the inclined surface 74 can be obtained with high positional accuracy.
[0071]
In addition, the pressing roller 22 is provided integrally with the upper blades 48 and 50, and it is not necessary to separately provide a member for forming the inclined surface 74 on the web 12. For this reason, the structure of the cutting process part 10 becomes simple and the process line 90 can also be shortened.
[0072]
If the upper blades 48 and 50 and the pressing roller 22 can be integrated with or separated from the web 12, the shaft 78 is not necessarily divided in the width direction (the axial direction of the shaft 78). The upper blades 48 and 50 and the pressing roller 22 may be provided in common with the single shaft 78. In general, it is easier to set the conditions of the upper blades 48 and 50 and the pressing roller 22 when the shaft 78 is divided as shown in FIG. Similarly, one shaft 80 may be provided.
[0073]
FIG. 7 shows a partially enlarged cutting part 110 according to the second embodiment of the present invention. In the second embodiment, compared with the first embodiment, only the shape of the lower blade constituting the cutting portion 110 is different, and the others are all the same. Abbreviated. Further, FIG. 7 shows the lower blade 112 provided corresponding to the upper blade 48 in the vicinity of the width direction end, but the lower blade provided corresponding to the upper blade 50 substantially in the center in the width direction is the same. It is made up of.
[0074]
The lower blade 112 of the second embodiment is an inclined portion 114 that is inclined so that the portion of the outer peripheral surface closest to the web 12 gradually approaches the web 12 toward the upper blade 48 (or the upper blade 50). Yes. The lower blade 112 also serves as the second pressing member of the present invention, and the lower blade 112 is arranged such that the tip of the inclined portion 114 (the rightmost portion in FIG. 7) enters the inside of the back surface 12B of the web 12. The position 112 and the diameter are set.
[0075]
When the web 12 is cut by the cutting portion 110 of the second embodiment having such a configuration, the inclined portion 114 of the lower blade 112 bites into the web 12 from the back surface 12B side at the time of cutting, and also in FIG. 8B. As shown, an indentation 75 that gradually becomes deeper toward the cutting edge 30C is formed on the back surface 30B of the PS plate 30. In the second embodiment, similarly to the first embodiment, the web 12 is cut under the condition that the burrs from the back surface 12B are reduced (preferably a condition that does not occur at all). Is generated in a portion where the back surface 12B is substantially recessed due to the indentation 75, and thus the amount of protrusion from the back surface 12B is small (preferably no protrusion from the back surface 12B).
[0076]
Of course, as in the first embodiment, since the inclined surface 74 is also formed on the surface 12A of the web 12, the printing paper surface can be prevented from being stained in printing using the PS plate 30. Further, since the upper blade 48 or the upper blade 50 is integrally rotated with the same as the coaxial, the PS plate 30 on which the inclined surface 74 is formed with high accuracy without being displaced with respect to the cutting edge. Can be obtained.
[0077]
In each of the above embodiments, the inclined surface 74 formed in a straight line in a sectional view is taken as an example. However, as the shape of the inclined surface 74, such a linear (more strictly, planar) inclination is used. Of course, it is not limited to the surface. In short, it is sufficient that unnecessary ink does not adhere at the time of printing. For example, the inclined surface 74 may be curved in a cross-sectional view. Further, the angle formed between the inclined surface 74 and the surface 30A of the PS plate 30 is not particularly limited. Such a shape change of the inclined surface 74 can be easily performed by, for example, changing the shape of the inclined portion 70 of the pressing roller 22. In addition, a plurality of inclined surfaces inclined at different inclination angles are formed around the PS plate 30 or at each cutting edge, and the inclined surface 74 is configured as a whole including the plurality of inclined surfaces. Also good. In this case, the boundary portions of the plurality of inclined surfaces may be convex or concave toward the surface 30A side of the PS plate 30. Moreover, when manufacturing the PS plate 30 which has such a some inclined surface, it can comprise so that a several inclined surface can be formed with one type of press roller, for example.
[0078]
In addition, by changing the shape, pressing conditions, shearing conditions, and the like of the members constituting the pressing roller 22 and the cutting roller 24, for example, as shown in FIG. 8B, the entire PS plate 30 is directed toward the surface. It can be curved so as to be convex. Further, by forming the PS plate 30 in such a shape, it is possible to further prevent the occurrence of edge contamination. The burr on the PS plate 30 may be generated as long as it does not affect the stain on the surface of the printing paper and handling (conveyance, etc.).
[0079]
Further, in the PS plate 30 according to the present invention, the angle of the cut surface 30C with respect to the surface 30A of the PS plate 30 is not limited to 90 °, and may be an acute angle as shown by a solid line in FIG. On the contrary, it may be an obtuse angle as shown by a two-dot chain line.
[0080]
As an example of the metal plate processing apparatus of the present invention, it can be applied not only to the cutting parts 10 and 110 constituting the processing line 90 of the PS plate 30 mentioned as the above embodiments, but also to any apparatus for cutting a metal plate. is there. For example, you may apply the metal plate processing apparatus of this invention to the running cutter 28 (refer FIG. 1) which cut | disconnects the web 12 along the width direction. In this case, as an example, a cutting blade (cutting upper blade) having the same cross-sectional shape as the upper blade 48 or the upper blade 50 and the lower blades 54 and 56 (or the lower blade 112) of the first embodiment over the entire width direction. And a cutting member having the same cross-sectional shape as the pressing roller 22 of the first embodiment, and the cutting upper blade and the pressing member are integrally brought into contact with and separated from the web 12. What is necessary is just to comprise.
[0081]
Further, in the cutting units 10 and 110 of each of the embodiments described above, the web 12 is always transported in a flat shape as an example. However, in these embodiments, for example, the lower blades 54 and 56 and the receiving roller The web 12 may be bent and conveyed along the conveyance direction so as to be gently wound around the web 40. As a result, the contact area between the web 12 and the lower blades 54 and 56 and the receiving roller 40 increases, and the frictional force between them increases, so that the web 12 is prevented from meandering and shaking during transportation. It becomes possible to convey stably.
[0082]
Further, while moving at the same moving speed as the conveying speed of the web 12, holding members such as a belt, fingers, and ring spacers for holding the web 12 are provided in the processing line 90, thereby conveying the web 12 more stably. May be.
[0083]
Furthermore, the processing line is not only a processing line for winding and processing a web wound with a photosensitive layer as described above, but also winding it after the photosensitive layer is applied. For processing lines that incorporate various processes, such as processing lines that are continuously processed and coiled after processing, and cut into a master sheet and then sheet-shaped so that the dimensions of the final shipment form are achieved. The metal plate processing apparatus and the metal plate processing method of the present invention can be applied to the cutting process. Even when the web 12 is transported, not only the processing line for transporting the photosensitive layer 77 upward, but also the processing line for transporting the photosensitive layer 77 downward, and further, the width direction of the web 12 is the vertical direction. Thus, a processing line or the like that is transported in a vertical position may be used, and the transport form of the web 12 is not particularly limited.
[0084]
In addition, you may apply the metal plate processing apparatus and metal plate processing method of this invention to the aluminum coil before surface treatment. Further, the desensitization treatment may be performed before and after the plate making of the PS plate 30 of the present invention.
[0085]
【Example】
The present invention will be described in more detail with reference to the following examples, but it is needless to say that the present invention is not limited to these examples.
[0086]
FIG. 9B shows a cutting portion (or cutting portion) when the web 12 is cut using the cutting portion of the first and second embodiments of the present invention and the conventional cutting portion (slitter). ) And specific numerical values of the cross-sectional shape of the PS plate 30 and the degree of edge contamination (stain due to unnecessary ink transferred to the surface of the printing paper). The conventional cutting part is configured to form the inclined surface 74 on the PS plate 30 by causing shear dripping at the same time as cutting without pressing the web 12 with the pressing roller 22 as in the present invention. It is a cutting part. The first and second examples in this table correspond to the first and second embodiments of the present invention, respectively.
[0087]
As shown in FIGS. 5 and 7, the pushing amount P in this table refers to the portion located at the lowest position of the pressing roller 22 (the portion entering the inside of the web 12) and the surface 12 A of the web 12 during the cutting process. The distance. Further, the offset amount C1 in forming the inclined surface refers to the offset amount C1 of the radially inner portion 64 with respect to the radially outer portion 66 as described above.
[0088]
Furthermore, since the conventional cutting part (slitter) does not form the inclined surface, each numerical value in forming the inclined surface is not listed.
[0089]
Further, the biting K in this table refers to the distance between the lowermost portion of the upper blades 48 and 50 and the back surface 12B of the web 12, as shown in FIGS. The clearance C2 refers to the distance in the width direction between the end surface of the upper blade and the end surface of the lower blade, and this is 0 in this embodiment.
[0090]
As shown in FIG. 9A, X and Y in this table indicate the width and depth of the inclined surface 74 of the cut PS plate 30, and B indicates the burr 78 from the back surface 30B of the PS plate 30, respectively. Indicates the amount of protrusion. In addition, each “slitter condition” in this table is cut so that the width X and the depth Y of the inclined surface 74 are the numerical values in the table by appropriately setting each condition in the cutting part. Show the case.
[0091]
In the table, “○”, “△”, “○ △” and “×”
○: Edge contamination was not generated at all
Δ: Edge stain is weak or partially generated
○ △: The length or strength of edge dirt was about halfway between the above ○ and △
X: It shows that edge stains appeared clearly in the form of a line over the entire circumference of the printing paper surface.
[0092]
The following PS plates were prepared and used as evaluation materials in this example. The thickness of a JIS-A1050 aluminum material containing 99.5% by weight of aluminum, 0.01% by weight of copper, 0.03% by weight of titanium, 0.3% by weight of iron and 0.1% by weight of silicon A 30 mm rolled plate was grained on its surface with a 20-mesh aqueous suspension of 400 mesh Pamiston (manufactured by Kyoritsu Ceramics) and a rotating nylon brush (6,10-nylon), and then washed well with water. did.
[0093]
This is immersed in a 15% by weight aqueous sodium hydroxide solution (containing 4.5% by weight of aluminum), and the amount of aluminum dissolved is 5 g / m.²After etching to become, it was washed with running water. Further, neutralized with 1% by weight nitric acid, and then in a 0.7% by weight nitric acid aqueous solution (containing 0.5% by weight of aluminum), a rectangular wave with an anode voltage of 10.5 volts and a cathode voltage of 9.3 volts 160 coulomb / dm using an alternating waveform voltage (current ratio r = 0.90, current waveform described in the example of Japanese Patent Publication No. 58-5796)²Electrolytic surface roughening treatment was performed with the amount of electricity at the time of anode. After washing with water, it is immersed in a 10% by weight sodium hydroxide aqueous solution at 35 ° C., and the amount of dissolved aluminum is 1 g / m.²After etching to become, it was washed with water. Next, it was immersed in an aqueous sulfuric acid solution at 50 ° C. and 30% by weight, desmutted, and washed with water.
[0094]
Further, a porous anodic oxide film forming treatment was performed using a direct current in a 20 wt% sulfuric acid aqueous solution (containing 0.8 wt% aluminum) at 35 ° C. That is, a current density of 13 A / dm²And anodizing film weight 2.7g / m by adjusting electrolysis time²It was. In order to prepare a negative photosensitive lithographic printing plate using a diazo resin and a binder, this support was washed with water, immersed in a 3% by weight aqueous solution of sodium silicate at 70 ° C. for 30 seconds, and washed and dried.
[0095]
The aluminum support obtained as described above has a reflection density of 0.30 as measured with a Macbeth RD920 reflection densitometer, and the centerline average roughness R defined in JIS B00601._aWas 0.58 μm. Next, a 1.0% by weight aqueous solution of methyl methacrylate / ethyl acrylate / 2-acrylamido-2-methylpropanesulfonic acid sodium copolymer (average molecular weight of about 60,000) (molar ratio 50/30/20) was applied to the support. The coating amount after drying with a roll coater is 0.05 g / m.²It applied so that it might become.
[0096]
Furthermore, the following photosensitive solution-1 was applied using a bar coater and dried at 110 ° C. for 45 seconds. The dry coating amount is 2.0 g / m²Met.
Photosensitive solution-1
Diazo resin-1 0.50g
Binder-1 5.00g
Stilite HS-2 (Daido Kogyo Co., Ltd.) 0.10g
Victoria Pure Blue BOH 0.15g
Tricresyl phosphate 0.50 g
Dipicolinic acid 0.20g
FC-430 (3M surfactant) 0.05 g
solvent
1-methoxy-2-propanol 25.00g
Methyl lactate 12.00g
Methanol 30.00g
Methyl ethyl ketone 30.00g
3.00 g of water
The diazo resin-1 is obtained as follows. First, 29.4 g of 4-diazodiphenylamine sulfate (purity 99.5%) was gradually added to 70 ml of 96% sulfuric acid at 25 ° C. and stirred for 20 minutes. To this, 3.26 g of paraformaldehyde (purity 92%) was gradually added over about 10 minutes, and the mixture was stirred at 30 ° C. for 4 hours to allow the condensation reaction to proceed. The condensation molar ratio between the diazo compound and formaldehyde is 1: 1. The reaction product was poured into 2 liters of ice water with stirring and treated with a cold concentrated aqueous solution in which 130 g of sodium chloride was dissolved. The precipitate was collected by suction filtration, and the partially dried solid was dissolved in 1 liter of water, filtered, cooled with ice, and treated with an aqueous solution in which 23 g of potassium hexafluorophosphate was dissolved. Finally, the precipitate was collected by filtration and air-dried to obtain 1 g of diazo resin.
[0097]
Binder-1 is a 2-hydroxyethyl methacrylate / acrylonitrile / methyl methacrylate / methacrylic acid copolymer (weight ratio 50/20/26/4, average molecular weight 75,000, acid content 0.4 meq / g). It is an alkali water-soluble film-forming polymer.
[0098]
Stylite HS-2 (manufactured by Daido Kogyo Co., Ltd.) is a polymer compound having a higher oil sensitivity than the binder, and styrene / maleic acid mono-4-methyl-2-pentyl ester = 50/50 (molar ratio). The average molecular weight was about 100,000. The mat layer was formed by spraying the mat layer forming resin solution onto the surface of the photosensitive layer thus prepared as follows.
[0099]
A 12% aqueous solution in which a part of a copolymer of methyl methacrylate / ethyl acrylate / 2-acrylamido-2-methylpropane sulfonic acid (feed weight ratio 65:20:15) copolymer is a sodium salt is prepared as a resin solution for forming a mat layer. Rotating atomizing electrostatic coating machine, atomizing head rotation speed 25,000rpm, resin liquid feed rate 4.0ml / min, applied voltage to atomizing head -90kV, ambient temperature at application is 25 ° C The relative humidity was 50%, and the coating surface was sprayed with steam for 2.5 seconds to wet the coating surface, and then 3 seconds after the wetting, hot air having a temperature of 60 ° C. and a humidity of 10% was sprayed for 5 seconds to dry. The average mat height is about 6 μm, the average size is about 30 μm, and the coating amount is 150 mg / m.²Met.
[0100]
The thus obtained coiled web having a plate thickness of 0.3 mm and a width of 820 mm is processed on the processing line under the above-mentioned several conditions so as to have a width of 400 mm, and a sheet-like PS having a cut length of 1100 mm. Got a version.
[0101]
In performing printing evaluation, an image is exposed on the manufactured sheet, and DN-3C (an alkaline water-based developer manufactured by Fuji Photo Film Co., Ltd.) is washed with water using 800H (an automatic developer manufactured by Fuji Photo Film Co., Ltd.). Development was performed with a solution diluted 1: 1. As the finisher, GN (Gum manufactured by Fuji Photo Film Co., Ltd.) was used, and a solution diluted with water 1: 1 was immediately applied after development and dried to complete the plate making. This printing plate was printed on 20,000 sheets at a speed of 100,000 sheets / hour using an offset rotary printing machine using magenta ink, which is easily cracked, and the edge stains were evaluated.
[0102]
As can be seen from this table, in the conventional cutting part, for example, when cutting is performed under conditions that eliminate the burr 78 (slitter condition 1), the width X and depth Y of the notch 76 are necessarily reduced. Edge stains have occurred. Further, when cutting is performed under such a condition that the width X and depth Y of the notch 76 are large (slitter condition 2), the edge dirt is eliminated as compared with the case of the slitter condition 1, but the protrusion amount B of the burr 78 is large. It has become. Further, when the depth of the notch 76 is increased (slitter condition 3), cracks are generated on the surface 12A (surface treatment layer) of the PS plate 30 and edge contamination is generated. Further, the protrusion amount B of the burr 78 is further increased.
[0103]
On the other hand, in the case of each embodiment of the present invention, by obtaining a sufficient size as the width X and the depth Y of the notch 76, the edge contamination is completely eliminated. In the case of the first embodiment, the discharge amount B of burrs from the back surface 12B is also reduced to such an extent that there is no practical problem. Furthermore, in the case of the second embodiment, no burrs are generated from the back surface 12B.
[0104]
【The invention's effect】
  In invention of Claim 1, a metal plate is used.With upper and lower bladesClamp in the thickness directionAt the pinched positionA cutting member to be cut, and a product side that is a product cut by the cutting member, and adjacent to the cutting member and arranged integrally with the cutting member so as to be able to contact and separate from the metal plate, and press the metal plate from the surface And a first pressing member that forms a surface-side inclined surface that is continuous from the recessed surface and is inclined with respect to the surface, so that the burr on the back surface is small and the notch of a necessary and sufficient size is formed on the surface. A metal plate formed with high positional accuracy can be obtained.
[0105]
According to a second aspect of the present invention, in the first aspect of the present invention, the invention further includes a bulging permission portion that is provided on the cutting member and allows bulging in a direction along the surface of the metal plate by pressing. Therefore, even if the pressing force by the pressing member is small, the inclined surface can be surely formed and the generation of burrs can be effectively prevented.
[0106]
According to a third aspect of the present invention, in the second aspect of the invention, the first pressing member is disposed at a position where the first pressing member enters into the bulging allowance portion rather than the cutting portion of the cutting member. Can be more effectively prevented.
[0107]
In invention of Claim 4, in invention in any one of Claims 1-3, it arrange | positions in the back surface side which pinched | interposed the said metal plate corresponding to the said press member, and at the time of the cutting | disconnection by the said cutting member Since it has the 2nd press member which presses a metal plate from a back surface and dents and forms an indentation in a back surface, an indentation is formed in the back surface of a metal plate, and the protrusion amount of a burr | flash becomes still smaller.
[0108]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the cutting member rotates along the transport direction with respect to the metal plate transported in a fixed direction. Since the pressing member is a rotating pressing member that is arranged coaxially with the rotary blade and rotates along the conveying direction of the metal plate, cutting and processing can be performed efficiently.
[0109]
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, at least one pair of the rotary pressing members is provided at a substantial gap in the center in the width direction perpendicular to the conveying direction of the metal plate. And at least a pair of the rotary blades movably in the width direction within the gap, and biasing means for biasing the pair of rotary blades in directions away from each other in the gap. The rotary blade can be accurately positioned with respect to the rotary pressing member, and can be attached and detached without causing the rotary blade to interfere with the rotary pressing member.
[0110]
  The invention according to claim 7 is a metal plate processing method for processing a metal plate by the metal plate processing apparatus according to claim 1, wherein the metal plate is cut into the cutting member.With upper and lower bladesWith the sheet thickness directionAt the pinched positionSince there is a cutting step for cutting, and a pressing step for pressing the metal plate with the first pressing member to form a front side inclined surface at a position adjacent to the cutting position by the cutting step, the burr on the back surface It is possible to obtain a metal plate which is small and has a notch having a necessary and sufficient size on the surface formed with high positional accuracy.
[0111]
  In the invention according to claim 8, the cutting memberWas sandwiched between the upper and lower blades in the thickness direction, and was sandwichedBy being cut at a position, a desired shape is obtained, and at a position adjacent to the cutting position by the cutting member, it is continuously pressed from the surface in the vicinity of the cutting edge by being pressed by a pressing member that comes in contact with and separates from the cutting member. Further, since the surface-side inclined surface inclined with respect to the front surface is formed, the metal plate is formed with a small burr on the back surface and a notch of a necessary and sufficient size on the surface with high positional accuracy.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a processing line of a PS plate having a cutting part according to a first embodiment of the present invention.
FIG. 2 is a side view showing a cutting part of the first embodiment of the present invention.
FIG. 3 is a cross-sectional view showing an upper blade of a cutting roller that constitutes a cutting portion of the first embodiment of the present invention.
4 is a partially enlarged cross-sectional view of the cutting roller of FIG. 3;
FIG. 5 is a partially enlarged cross-sectional view showing a cutting portion of the first embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a web to be cut and processed by a cutting processing unit according to the first embodiment of the present invention.
FIG. 7 is a partially enlarged cross-sectional view of a cutting portion of a second embodiment of the present invention.
FIG. 8 is a cross-sectional view showing another example of the cross-sectional shape of the lithographic printing plate obtained by the present invention, in which (A) shows the case of the second embodiment, and (B) and (C) show another case. is there.
FIG. 9A is an explanatory view showing an enlarged shape of a PS plate obtained by the cutting processing portion of the present invention, and FIG. 9B is a view showing a cutting processing portion of the present invention and a conventional cutting portion. It is a table | surface which shows the shape of PS plate, and the relationship between edge dirt.
[Explanation of symbols]
10 Cutting part (Metal plate processing equipment)
12 Web (metal plate)
22 Pressing roller (rotating pressing member, first pressing member)
24 Cutting roller (Cutting member)
30 PS plate (metal plate)
48 Upper blade (Cutting roller, rotary blade, cutting member)
50 Upper blade (cutting roller, rotary blade, cutting member)
52 Disc spring (biasing means)
54 Lower blade (cutting roller, cutting member)
56 Lower blade (cutting roller, cutting member)
62 Relief recess (bulging allowance)
112 Lower blade (second pressing member, cutting roller, cutting member)

Claims (8)

By pinching Rukoto a metal plate in the thickness direction between the upper and lower blades, and the cutting member to cut at a position sandwiched,
It is arranged on the product side to be a product by cutting with the cutting member and adjacent to the cutting member so as to be integrated with the cutting member so as to be able to come in contact with and separate from the metal plate. A first pressing member that forms a surface-side inclined surface that is continuous and inclined with respect to the surface;
The metal plate processing apparatus characterized by having. A bulging allowing portion provided on the cutting member and allowing bulging in a direction along the surface of the metal plate by pressing;
The metal plate processing apparatus according to claim 1, comprising:   The metal plate processing apparatus according to claim 2, wherein the first pressing member is disposed at a position where the first pressing member enters the bulging allowance portion with respect to the cutting portion of the cutting member. A second pressing member that is disposed on the back side across the metal plate corresponding to the pressing member, and that presses the metal plate from the back side to form a dent on the back side when cut by the cutting member;
The metal plate processing apparatus according to any one of claims 1 to 3, wherein: The cutting member is
A rotating blade that rotates along the conveying direction with respect to a metal plate conveyed in a certain direction,
5. The metal plate processing according to claim 1, wherein the pressing member is a rotary pressing member that is disposed coaxially with the rotary blade and rotates along a conveying direction of the metal plate. apparatus. At least a pair of the rotation pressing members are provided with a predetermined gap in the approximate center in the width direction orthogonal to the transport direction of the metal plate,
At least a pair of the rotary blades are provided to be movable in the width direction within the gap,
The metal plate processing apparatus according to claim 5, further comprising: an urging unit that urges the pair of rotary blades in a direction away from each other in the gap. A metal plate processing method for processing a metal plate by the metal plate processing apparatus according to claim 1,
The blade and Rukoto with scissors in the thickness direction between the lower blade on the cutting member of the metal plate, and a cutting step of cutting at a position sandwiched,
In a position adjacent to the cutting position by the cutting step, a pressing step of pressing the metal plate with the first pressing member to form a surface-side inclined surface;
The metal plate processing method characterized by having. It is sandwiched between the upper blade and lower blade of the cutting member in the thickness direction, and is cut into a desired shape by being sandwiched ,
In a position adjacent to the cutting position by the cutting member, a surface-side inclined surface that is continuous from the surface and inclined with respect to the surface is formed in the vicinity of the cutting edge by being pressed by a pressing member that is integrally contacted and separated from the cutting member. A metal plate characterized by being made.

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