JP2001322024A - Apparatus and method for working metal sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal sheet working apparatus with less burrs or burrs to a face side when cutting a metal sheet. SOLUTION: This metal sheet working apparatus comprises a cutting means for cutting the metal sheet and a pressing member which is integrated with the cutting means and presses a portion to be cut of the metal sheet when cutting the metal sheet to form an inclined surface, a. the cutting member has a swelling permitting part for permitting the swelling of the metal sheet, and the width of a blade tip portion used for cutting from the swelling permitting part to the blade tip is 0.005-0.5 mm, b. the cutting member is moved separate from the cut portion after the cutting, or c. a metal sheet separating means for separating the cut metal sheet from the cutting member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal plate processing apparatus and a metal plate processing method, and more particularly, to a photosensitive lithographic printing plate by cutting a web made of a support such as a metal plate having a photosensitive layer formed on its surface. The present invention relates to a metal plate processing apparatus and a metal plate processing method in which defects such as return to the front side and distortion are not generated in a cut portion when a “PS plate” is manufactured.

[0002]

2. Description of the Related Art In general, a PS plate is provided on a support such as a sheet-like or coil-like aluminum plate by, for example, graining,
A surface treatment such as anodization, silicate treatment, or other chemical conversion treatment is performed alone or in an appropriate combination, and then a photosensitive solution is applied and dried to form a surface treatment layer to produce a web, and the web is formed into a desired size. It is manufactured by the procedure of cutting. The PS plate manufactured by the above procedure is exposed,
It is used for printing after plate making processes such as development and gumming.

[0003] As a method of preventing the printing paper surface from being stained by the ink attached to the cut portion of the PS plate, for example, a method of shaving the corner of the end of the support with a file or a knife (Japanese Patent Publication No. 57-46754), A method of applying a desensitizing liquid to a cut surface (Japanese Patent Publication No. 62-61946), a method of preventing burrs from being generated on the print surface side during cutting (Japanese Patent Application Laid-Open No. Sho 61-61946).
Japanese Patent Application Laid-Open No. 2-19315), a method in which a cut end is bent to a side opposite to a printing surface (Japanese Patent Laid-Open No. 7-32758).
At the same time when the PS plate is cut, the notch
A method of forming the film at the edge corner portion of the surface treatment layer of the plate (Japanese Patent Application Laid-Open Nos. 5-104871, 8-114451, 9-323486, 10-35130,
Japanese Patent Application Laid-Open No. 10-100556) and the like have been proposed.

However, in any of these methods,
The method of applying the desensitizing solution cannot completely eliminate the stain on the printing paper surface, and the PS plates adhere to each other, resulting in a problem that handling properties are significantly deteriorated.
Further, when the shear dripping is formed, large burrs may be generated on the back surface of the PS plate, which may cause the PS plate to meander when the PS plate is transported in the exposure device, or the burr may be missing. Sometimes it became garbage. Furthermore, at the time of cutting, a large crack may be generated on the surface (the surface on which the surface treatment layer is formed), which may affect printed matter.

As a method of solving the above problem, for example, a method of forming a notch in a step before forming a surface treatment layer on a support, for example, a coil manufacturing process can be considered.

However, in this method, post-processing must be performed by setting the coil width for each PS plate size. Since the PS plate has many sizes, it is difficult to set the coil width for each size. Further, in the manufacturing method, since a plurality of PS plates cannot be formed in the width direction from a long web, the manufacturing efficiency is low.

In order to solve these problems of the conventional method, as shown in FIGS. 15 and 16, a web W conveyed in a fixed direction is moved near a cut portion of the web W. A disk-shaped upper blade A and a lower blade B that rotate from the upstream side to the downstream side and cut in the thickness direction with respect to the transport direction a, and are arranged coaxially with the upper blade A and contact the web W. A swelling permitting portion A2, which is an annular concave portion that allows swelling at the cutting portion W1 by being pressed by the pressing roller C, near the cutting edge surface A1 of the upper blade A. Has been proposed.

At the cutting start position where the web W is bitten between the upper blade A and the lower blade B, as shown in FIG. To cut the web W. At the pressing position where the cut web W is pressed most strongly from the upper surface by the pressing roller C, as shown in FIG. 16 (B), the cutting edge surface A1 of the upper blade A further descends. The cutting portion W1 of the web W is pressed downward by the pressing roller C to form an inclined surface W2 at the cutting portion W1, and at the same time, the cutting portion W1 expands toward the swelling allowable portion A2 of the upper blade A. Put out. At the blade return position where the upper blade A separates from the web W and returns to the position before cutting, the blade tip surface A1 rises along the lower blade B as shown in FIG. Return to position.

[0009]

However, in the position, when the cutting edge surface A1 rises, the cutting edge tip surface A3 contributing to the cutting from the swellable portion A2 to the cutting edge contacts the cutting portion W1. . Therefore, when the width L of the blade tip surface A3 is excessively large, the blade tip surface A3 comes into strong contact with the cutting portion W1, so that the cutting portion W1 is turned up in FIG. May occur.

The present invention, in consideration of the above facts, provides a metal sheet processing apparatus and a metal sheet processing method for preventing the return of a cut portion and the occurrence of distortion in cutting a web or the like.

[0011]

According to a first aspect of the present invention, there is provided a cutting member for cutting a metal plate to be cut in a thickness direction, and the cutting member is provided integrally with the cutting member. A press member that presses a cut portion of the metal plate to be cut in a thickness direction to form an inclined surface when cutting the plate, wherein the cut member is pressed by the press member. And a swelling permitting portion that allows the swelling of the cutting portion is formed, and a width of the tip end surface contributing to the cutting from the swelling permitting portion to the cutting edge of the cutting member has a width of 0.05-0. It is a metal plate processing apparatus characterized by being 5 mm.

In the metal plate processing apparatus according to the first aspect, the cutting member cuts the metal plate to be cut, and the pressing member presses the cut portion of the metal plate to be cut, and the pressing member presses the cut portion toward the cut portion. An inclined surface is formed so as to decrease its thickness. Due to the pressing by the pressing member, the cutting portion swells toward the shrink-proof allowing portion of the cutting member, and does not contact the cutting member.

Therefore, there is no need to form shear dripping when cutting the metal plate to be cut.

Further, since the step of shaving the vicinity of the cut portion on the surface of the metal plate to be cut can be omitted, even when the metal plate subjected to surface treatment such as anodic oxidation is cut, the surface treatment layer of the metal plate may be damaged. Is prevented.

Further, since the width of the tip end surface of the cutting member is small, when the blade of the cutting member returns to the position before cutting after cutting the metal plate to be cut, the cutting member moves the cutting member. Strong contact with the cut portion of the cut metal plate is prevented.

According to a second aspect of the present invention, there is provided a cutting member for cutting a metal plate to be cut in a thickness direction, and provided integrally with the cutting member, wherein the cutting member cuts the metal plate to be cut. A pressing member that presses a cut portion of the metal plate to be cut in a thickness direction to form an inclined surface, and the cutting member moves so as to be separated from the cut portion after cutting. A metal plate processing apparatus formed so as to return to a position before cutting.

In the metal sheet processing apparatus, when the blade is returned, the cutting edge of the cutting member does not contact the cutting portion of the metal to be cut. It is turned upside down, and no return or distortion occurs.

According to a third aspect of the present invention, the cutting member moves the metal plate to be conveyed in a certain direction from an upstream side to a downstream side in the conveying direction of the metal plate to be cut in the vicinity of a cutting portion. A pair of rotary blades that rotate and cut toward the side, wherein the pressing member is disposed coaxially with one of the rotary blades, contacts the metal plate to be cut, and rotates at a transport speed and a constant speed. This is a metal plate processing device that is a rotary pressing member.

In the metal plate processing apparatus, as described above, the rotary blade rotates from the upstream side to the downstream side with respect to the transport direction in the vicinity of the cutting section.
The metal plate to be cut conveyed toward the rotary blade is continuously cut at a portion of the rotary blade on the upstream side in the conveying direction. The cut portion of the metal plate cut by the rotary blade is continuously pressed by the rotary pressing member, and a continuous inclined surface is formed.

According to a fourth aspect of the present invention, there is provided a metal plate wherein the pair of rotary blades are arranged so as to be in contact with each other on the upstream side in the transport direction of the metal plate to be cut and to be separated from each other on the downstream side. It is a plate processing device.

[0021] In the above-mentioned metal plate processing apparatus, it is also preferable that
The metal plate to be cut is cut at a portion of the rotary blade on the upstream side in the transport direction, similarly to the metal plate processing apparatus described in (1). And, as described above, since the rotary blades are arranged so as to be separated from each other on the downstream side, the cutting edge of the rotary blade moves away from the cut portion of the metal plate to be cut after cutting. . Therefore,
The cutting portion does not come into contact with the tip surface of the cutting edge, so that no return and distortion occur.

According to a fifth aspect of the present invention, the pair of rotary blades contact each other on the upstream side with respect to the transport direction of the metal plate to be cut, and are separated from each other on the downstream side. This is a metal plate processing apparatus in which rotating shafts are arranged at twisted positions.

In the metal plate processing apparatus, no additional equipment is required for disposing the pair of rotary blades as described above.

According to a sixth aspect of the present invention, the pair of rotary blades contact each other on the upstream side with respect to the transport direction of the metal plate to be cut, and are separated from each other on the downstream side. This is a metal plate processing apparatus including a rotary blade pressing member that presses one of the rotary blades.

In the metal plate processing apparatus, the downstream separation distance between the pair of rotary blades can be adjusted by adjusting the pressing force of the rotary blade by the rotary blade pressing member.

According to a seventh aspect of the present invention, the rotary blade pressing member includes a rolling member that rotates at the end of the rotary blade pressing the rotary blade while contacting the rotary blade. Device.

In the metal plate processing apparatus, the rotary blade pressing member abuts on the rotary blade in the rolling member, and
When the rotary blade rotates, the rolling member also rotates while contacting the rotary blade.

[0028] In the invention according to claim 8, the metal plate to be conveyed in a certain direction is moved from the upstream side to the downstream side in the conveying direction of the metal plate to be cut in the vicinity of the cut portion of the metal plate to be cut. A pair of rotary blades that rotate and cut toward the side, and are arranged coaxially with one of the rotary blades, and are formed so as to rotate at the same speed as the transport speed in contact with the metal plate to be cut. When cutting the metal plate to be cut by the rotary blade, a rotary pressing member that presses the cut portion in the thickness direction to form an inclined surface, and the metal plate to be cut that is cut by the rotary blade. A metal plate processing apparatus comprising: a metal plate separating unit that separates the rotary blade from the rotary blade.

In the above metal plate processing apparatus, the metal plate cut by the rotary blade is separated from the rotary blade by the metal plate separating means, so that the cut portion of the metal plate to be cut is also separated from the rotary blade. . Therefore, it is possible to prevent the cutting portion from contacting the rotating rotary blade and causing the cutting portion to be warped and distorted.

According to a ninth aspect of the present invention, the metal plate separating means has a drum-shaped body whose outer diameter is reduced from a center part toward both ends, and the center part of the body is provided with the cut piece. This is a metal plate processing device that is a metal plate separation roller that is arranged so as to be pressed against a cut portion of the metal plate.

In the metal plate processing apparatus, the vicinity of the cut portion of the metal plate to be cut is pressed by the metal plate separating roller, so that the cut metal plate after cutting is separated from the rotary blade.

According to a tenth aspect of the present invention, there is provided a swelling permitting portion formed in the vicinity of the cutting edge, and a width of the tip end surface contributing to cutting from the swelling permitting portion to the cutting edge is 0.05. ~
A cutting step of cutting the metal plate to be cut in the thickness direction using a cutting member that is 0.5 mm, and simultaneously with the cutting step, by a pressing member provided integrally with the cutting member, Pressing the cut portion in the thickness direction to form an inclined surface and swelling the cut portion toward the swellable portion.

In the above-mentioned metal sheet processing method, as described above, since a cutting member having a small width of 0.05 to 0.5 mm is used as the tip end surface, the tip end surface of the cutting edge is brought into contact with the cutting portion when returning the blade. No strong contact. Therefore, it is possible to prevent the cutting portion from hitting the tip end face of the cutting edge and causing warpage and distortion.

[0034] The eleventh aspect is a cutting step of cutting the metal plate to be cut in the thickness direction using a cutting member having a bulging allowance formed near the cutting edge, and the cutting step is followed by the cutting step. By a pressing member provided integrally with the member, a pressing step of pressing a cut portion of the metal plate to be cut in a thickness direction to form an inclined surface, and a cutting edge of the cutting member that cuts the metal plate to be cut. And a blade returning step of returning to a position before cutting, wherein the cutting member is moved so as to be separated from the cutting part in the blade returning step.

In the metal sheet processing method, since the cut portion does not contact the cutting member in the blade returning step, it is possible to prevent the cut portion from hitting the cutting member and causing a return or distortion.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment FIG. 1 shows an example of a processing line for manufacturing a PS plate by cutting a web having a photosensitive layer formed on the surface of a support such as an aluminum plate. In the processing line shown in FIG. 1, the metal plate processing apparatus of the present invention is used. FIG. 1 shows a state where the web 12 is being cut in the processing line. FIG. 2 shows details of the configuration of the metal plate processing apparatus in the processing line.

As shown in FIG. 1 and FIG.
1, that is, on the side where the web 12 is fed out, in other words, on the upper right side in FIG. 1, a feeder 14 that sequentially unwinds the web 12 wound in advance in a roll shape is disposed. A leveler 15 is provided on the downstream side, that is, in the direction in which the web 12 is sent out. Leveler 15
A feed roller 16 is disposed downstream of the feed roller.

Downstream of the feed roller 16 is a web 12
A notcher 20 for providing a punched portion is provided, and a metal plate processing device 10 for cutting the web 12 is provided downstream of the notcher 20. The metal sheet processing apparatus 10 is provided with cutting roller portions 24 and 25 for cutting the web 12 to a predetermined width along the sending direction, in other words, the conveying direction.

On the downstream side of the metal plate processing apparatus 10, a length measuring device 26, a running cutter 28, a conveyor 32, an accumulating unit 34,
And a transport section 35 are sequentially arranged.

The web 12 delivered by the delivery device 14
Is curled by the leveler 15 and the feed roller 1
At 6, the sheet is electrostatically attached to the slip sheet 18.

The web 12 to which the outer paper 18 is attached is
The notcher 20 is provided with a punching section for guiding the cutting rollers 24 and 25 of the metal sheet processing apparatus 10 to a predetermined cutting position, and the metal sheet processing apparatus 10 cuts the sheet along the transport direction.

The cutting waste 86 generated by the cutting by the metal plate processing apparatus 10 is sent to a chopper (not shown) and is finely cut, and then collected by a collection conveyor 82 into a collection box 84. The suction process is performed by the suction pipe 23.

In this manner, the web 12 cut to a predetermined cutting width has its feed length detected by the length measuring device 26 and cut by the running cutter 28 at the designated timing. Thus, the PS plate 30 having the set size is manufactured.

Next, the PS plates 30 are sent to a stacking unit 34 by a conveyor 32, stacked by a predetermined number, stacked on a pallet 33 via a conveying unit 35, and sent to a storage or a packaging process. In FIG. 1, 31 is P
This shows a stack of S plates stacked in a predetermined number.

As shown in FIG. 2, the metal plate processing apparatus 10 has a horizontally long rectangular frame provided so as to surround a transport plane T which is a virtual plane formed by a path along which the web 12 is transported. It has a body 10A, a cutting roller 24 located at the center of the opening of the frame 10A, and two cutting rollers 25 located at both ends. In the metal plate processing apparatus 10, the transport surface T is a plane extending in the horizontal direction.

As shown in FIG. 2, the cutting roller 25 is
Above the transport surface T, an upper blade 48, which is a rotary blade fixed to a rotating shaft 78 extending parallel to the transport surface T and perpendicular to the transport direction of the web 12, and a transport surface T Are located on the opposite side of the rotation shaft 78 with the rotation shaft 78
And a lower blade 54 which is a rotary blade fixed to a rotary shaft 80 extending in parallel to the lower blade 54. The rotating shaft 78 and the rotating shaft 80 are moved from the base 46 movable in a direction perpendicular to the transport direction of the web 12 along the rail 44 provided on the lower frame of the frame 10A. It extends toward the center of the opening. Both the rotating shaft 78 and the rotating shaft 80 are rotated around the axis at the same speed in the transport direction by appropriate driving means (not shown). Therefore, the rotation shaft 78 and the rotation shaft 80 rotate in directions opposite to each other. The upper blade 48 and the lower blade 54 correspond to a cutting member or a rotary blade in the metal sheet processing apparatus of the present invention.

As shown in FIGS. 2 to 5, the upper blade 48 is formed in a substantially dish shape having a conical outer peripheral surface whose outer diameter decreases in a direction toward the base 46. A part of the outer peripheral portion protrudes downward from the transport surface T. On the large diameter side of the outer peripheral surface of the upper blade 48, that is, on the outer periphery of the large diameter side, a blade tip surface 59
Are formed.

On the large-diameter surface of the upper blade 48, the upper blade 4
8, a circular recess 58 is formed.
A groove-like concave portion 60 is formed in the peripheral portion of. Therefore, when the upper blade 48 is polished, it is only necessary to polish the outer side of the concave portion 58 on the surface on the large diameter side, so that labor for polishing can be reduced. Further, since the concave portion 60 is formed, when the concave portion 58 is polished, it is possible to prevent the polishing tool from hitting the cutting edge of the upper blade 48 to damage the cutting edge surface 59.

Outside the concave portion 58 on the large-diameter surface, an annular bulging-allowing concave portion 62 for allowing the cut portion 12C of the web 12 to bulge toward the large-diameter surface of the upper blade 48. Are formed concentrically with the recess 58. The swellable concave portion 62 corresponds to the swellable portion in the metal sheet processing apparatus of the present invention. The maximum depth of the bulging allowable concave portion 62 is
Usually, it is in the range of 0.1 mm to 0.5 mm, but can be appropriately determined according to the cutting conditions. As shown in FIG.
The bulging-allowable concave portion 62 has a cross-sectional shape that becomes deeper toward the periphery, but the cross-sectional shape of the bulging-allowable concave portion 62 is
It is not limited to this.

As shown in FIG. 4, between the outer periphery of the swellable recess 62 on the large-diameter side of the upper blade 48 and the cutting edge 59, the web extends from the swellable recess 62 to the cutting edge. A cutting edge tip surface 66 contributing to the cutting of No. 12 is formed. The width of the blade tip surface 66, that is, the blade tip width L is 0.0
5 to 0.5 mm. If the blade tip width L is within the above range, the upper blade 48 hardly spills during cutting,
In addition, it is possible to prevent the cutting edge 12C from being distorted due to strong contact between the blade tip surface 66 and the cutting portion 12C when the blade is returned, and to prevent the surface of the web 12 from returning.

The concave portion 58 on the large-diameter side surface of the upper blade 48
A flat offset surface 6 offset from the blade tip surface 66 by a depth C1
4 are formed. The offset depth C1 is usually
It is in the range of 0.05 to 0.30 mm, but can be appropriately determined according to the cutting conditions.

As shown in FIG. 2, a pressing roller 22 is integrally provided on a surface of the upper blade 48 near the center of the frame 10A. The pressing roller 22 is rotatably provided on the rotating shaft 78. The pressing roller 22 corresponds to a pressing member or a rotation pressing member in the metal plate processing apparatus of the present invention. The outer peripheral surface 22A of the pressing roller 22 is
A is formed in the shape of a conical surface whose outer diameter decreases in the direction toward the center of A. As shown in FIG. 5, the large-diameter side surface is arranged to abut on the offset surface 64 of the upper blade 48. The outer diameter of the large-diameter portion is smaller than the diameter of the outer periphery of the swellable concave portion 62 of the upper blade 48, and is formed in a size that can press the web 12. Therefore, when the web 12 is cut, the pressing roller 22
While pressing the cutting portion 12C from the surface 12A of the web 1
The web 12 rotates in the same direction as the second conveying direction at the same speed as the conveying speed of the web 12.

As shown in FIGS. 2 and 5, the lower blade 54
The rotating shaft 8 is formed in a disk shape so that the surface facing the base 46 contacts the periphery of the large-diameter surface of the upper blade 48.
It is fixed concentrically to zero. K in FIG.
4 indicates the distance from the outer circumference of the upper blade 4 to the outer circumference on the large diameter side of the upper blade 48, in other words, the amount of overlap between the lower blade 54 and the upper blade 48, or in other words, the amount of bite. The bite amount K is from 0.1 mm
A range of 1 mm is preferable, and a range of 0.2 to 0.5 mm is particularly preferable. A cutting edge surface 55 is formed on the outer periphery of the lower blade 54.

As shown in FIG. 2, between the lower blade 54 and the base 46 on the rotary shaft 80, the receiving roller 42 is rotatably provided adjacent to the lower blade 54 and concentrically with the lower blade 54. I have. On the side adjacent to the lower blade 54 of the receiving roller 42, a reduced diameter portion 42A that is a reduced diameter portion whose outer diameter is reduced in a conical shape toward the lower blade 54 is formed. The reduced diameter portion 42A is provided with the upper blade 4
8 are formed so as not to come into contact with the cutting edge surface 59.

On the opposite side of the rotary shaft 80 from the receiving roller 42 with the lower blade 54 interposed therebetween, the support roller 40 is provided with the lower blade 54.
The receiving roller 42 is provided concentrically and rotatably. Therefore, the support roller 40 and the receiving roller 42 rotate at the same speed as the transport speed of the web 12 in the same direction as the transport direction of the web 12 while contacting the back surface 12B of the web 12 when the web 12 is cut. I do.

On the other hand, as shown in FIG. 2, the cutting roller 24 located at the center of the frame 10A has the same axis as the rotating shaft 78, and is driven by a suitable driving means (not shown). 12, a rotating shaft 79 rotating in the transport direction, and a rotating shaft 7
9, a pair of upper blades 50 and a pair of upper blades 5
0 so as to sandwich the pair of upper blades 50 adjacent to each other.
A pair of rotatable pressure rollers 29 concentrically disposed on
And a rotating shaft 81 having the same axis as the rotating shaft 80 and rotating around the axis at the same speed as the rotating shaft 79 in the transport direction of the web 12 by a suitable driving means (not shown).
And a pair of lower blades 56 concentrically fixed to the rotating shaft 81 corresponding to the upper blade 50, and concentric with the rotating shaft 81 adjacent to the surfaces of the lower blades 56 facing the both ends of the frame 10A. And a pair of rotatable support rollers 41 provided.

The rotation shaft 79 and the rotation shaft 81 are located on opposite sides of the transport surface T.

A disc spring 52 is provided between the pair of upper blades 50 to urge the upper blades 50 away from each other.

As shown in FIGS. 2 to 5, the upper blade 52 is formed in the same manner as the upper blade 48 except that the thickness is smaller. Therefore, it has a substantially dish shape having a conical outer peripheral surface, and a part of the outer peripheral portion protrudes downward from the transport surface T on the large diameter side. Further, the recess 58, the recess 60, the bulging-allowing recess 62, the offset surface 64, and the blade tip surface 66 are formed in the same manner, and the blade tip width L is in the same range as the upper blade 48.

As shown in FIG. 2, the upper blades 50 are arranged on the small diameter side so as to face each other with the disc spring 52 interposed therebetween.

As shown in FIG. 2, the lower blade 56 is formed similarly to the lower blade 54 except that the thickness is smaller.
The lower blade 56 is positioned so as to sandwich the upper blade 50 from both sides, and on the inner side, that is, on the surface toward the center of the frame 10A,
The upper blade 50 is in contact with the large-diameter side surface with a bite amount K. In the overlapping portion between the upper blade 50 and the lower blade 56, the upper blade 50 is pressed by the lower blade 56 by the urging force from the disc spring 52.

The lower blade 56 is adjacent to the pair of lower blades 56.
A cutting waste receiving portion 72 is formed so as to be sandwiched between them.
The cutting waste 72 is a reduced-diameter portion formed so that the diameter decreases in a conical manner toward the lower blade 56 so as to correspond to the shape of the outer peripheral surface of the upper blade 50. 59 are formed so as not to contact.

Next, how the web 12 is cut in the metal plate processing apparatus 10 will be described.
FIG. 6 shows a state in which the web 12 has been cut by the upper blade 48 and the lower blade 54 and the upper blade 50 and the lower blade 56.

As shown in FIGS. 1 to 6, the web 12 sent out by the feeder 14 passes inside the opening of the frame 10A along the transport surface T. Then, since the web 12 passes between the upper blade 48 and the lower blade 54 and between the upper blade 50 and the lower blade 56 in the cutting roller portions 24 and 25, the upper blade 48 and the lower blade 54, and The web 12 is bitten between the upper blade 50 and the lower blade 56, and a shearing force acts in the thickness direction of the web 12.
As a result, the web 12 is separated from the cutting rollers 24 and 25.
Is cut at The cutting waste 86 generated by cutting is
Upper blade 48 and reduced diameter portion 42A, and upper blade 50 and cutting waste receiver 7
2 discharges to the outside of the metal plate processing apparatus 10.

The web 12 is supported on the back surface 12B by the lower blade 54 or 56, and
, The outer peripheral surface 22A of the pressing roller 22 is pressed from above. Thus, as shown in detail in FIG. 5, the cut 12C in the web 12 is partially deformed and the surface 12
A, and an inclined surface 12E inclined at a predetermined inclination angle θ with respect to the surface 12A is formed. The cut portion 12 </ b> C is simultaneously plastically deformed in the direction toward the upper blade 48 or the upper blade 50 and swells, and enters the swellable recess 62. Therefore, since the deformation flow of the support of the web 12 is allowed, the web 12 can be reliably deformed even if the pressing force of the pressing roller 22 is small.

In the metal plate processing apparatus 10 in the processing line 90 according to the first embodiment, the web 12 can be sheared under shearing conditions in which burrs on the back surface are reduced or are not generated at all. By forming the bulging portion by pressing the cutting portion 12C with the 54 or the lower blade 56, it is possible to more effectively prevent the generation of burrs in the PS plate 30. In addition, a desired inclined surface 12E is formed on the periphery of the PS plate 30. Further, the upper blade 48
Since the blade tip width L of the upper blade 50 is smaller than before, when the blade returns, when the blade surfaces 59 of the upper blade 48 and the upper blade 50 rise with respect to the lower blade 54 and the lower blade 56,
Neither the upper blade 48 nor the upper blade 50 makes strong contact with the cutting portion 12C. Therefore, in the vicinity of the cut portion 12C, there is no occurrence of a defect such as a return to the surface side, distortion, and a notch. Further, since the upper blade 48 and the upper blade 50 do not suffer from blade spill at the time of cutting, the photosensitive layer 12D is free from scratches and defects caused by blade spill.

Therefore, when printing is performed using the PS plate 30 obtained by the processing line 90, unnecessary ink does not adhere to the printing paper surface, so that a high quality printed matter can be obtained. Further, for example, when the PS plate 30 is transported in the exposure device, the PS plate 30 does not meander,
The PS plate 30 is also excellent in handleability.

Moreover, in the metal plate processing apparatus 10, the upper blade 4
8 and the upper blade 50 and the pressing roller 22 are disposed on the same rotation axis, so that the relative positions of the upper blade 48 and the upper blade 50 and the pressing roller 22 with respect to the web 12 do not shift, and the web 12 Does not deviate from the position of the cutting surface and the position of the inclined surface 12E. Therefore, the PS plate 30 having the inclined surface 12E can be obtained with high positional accuracy. Further, since it is not necessary to separately provide a member for forming the inclined surface 12E on the web 12, the structure of the metal plate processing apparatus 10 is simplified, and the processing line 90 can be shortened.

In the metal plate processing apparatus 10, the upper blade 4
Instead of mounting the upper blade 8 and the upper blade 50 on separate rotary shafts, the upper blades 48 and 50 and the pressing rollers 22 and 29 may be mounted on a common rotary shaft. Similarly, the lower blade 54 and the lower blade 5
6 may be attached to a common rotating shaft.

Although the example of the processing line having the metal plate processing apparatus provided with the pair of rotary blades has been described above, the metal plate processing apparatus has a processing line including a so-called guillotine cutter as a cutting member instead of the pair of rotary blades. Needless to say, the invention described in claim 1 of the present application can also be applied.

2. 2nd Embodiment In the processing line of 1st Embodiment, the metal plate processing apparatus 1
An example in which the metal plate processing apparatus 11 is used instead of 0 will be described below.

In the processing line according to the second embodiment, in the cutting roller section 25 provided in the metal plate processing apparatus 11, the upper blade and the lower blade are located upstream (hereinafter, referred to as "upstream") with respect to the transport direction of the web 12. ) Has the same configuration as the processing line of the first embodiment, except that the processing line is slightly opened toward the downstream side.

FIG. 7 shows the positional relationship between the upper blade 48 and the lower blade 54 in the cutting roller section 25 as viewed from above. In FIG. 7, an arrow a indicates the transport direction of the web 12 and an arrow b.
The arrow c indicates the rotation direction of the upper blade 48 and the lower blade 54, respectively. The same applies to the following drawings. Note that the receiving roller 42 and the pressing roller 22 are omitted.

As shown in FIG. 7, in the cutting roller portion 25, the upper blade 48 and the lower blade 54 are arranged so as to open at an angle φ from the upstream side to the downstream side. And
As the upper blade 48 and the lower blade 54 are arranged in a positional relationship,
The rotating shaft 78 and the rotating shaft 80 are arranged in parallel with the transport surface T of the web 12 and at mutually twisted positions. When the angle φ is 0.1 ° or more, the cut portion 12C of the web 12 does not contact the upper blade 48 when the blade returns, and there is no trouble in cutting.

The edge width L of the upper blade 48 is 0.0
A range of 5 to 0.5 mm is preferred, but not limited.

The cutting roller unit 25 is provided with the exception of the above points.
Metal plate processing apparatus 10 in processing line of first embodiment
Has the same configuration as that of the cutting roller unit 25 provided therein.

FIGS. 8 and 9 show the positional relationship between the upper blade 48, the lower blade 54, and the web 12 at the time of cutting, pressing, and after cutting, respectively. In FIG. 8, the web 12 is shown to be conveyed so as to form a mountain at the lower blade 54, but the web 12 is usually conveyed almost flat.

At the position where the web 12 is bitten between the upper blade 48 and the lower blade 54, as shown in FIG. 10A and FIG. To cut the web 12. And
In the position where the cutting portion 12C of the web 12 is pressed most strongly by the pressing roller 22, as shown in FIG. 10 and FIG.
9, the cutting portion 12C of the web 12 is pressed downward by the pressing roller 22 to form an inclined surface on the cutting portion 12C, and at the same time, the cutting portion 12C
Bulges toward the bulge-allowed portion of Then, at the blade return position where the blade edge surface 59 of the upper blade 48 separates from the web 12 and returns to the position before cutting, as shown in FIG. 10 and FIG. , Lower blade 54
Rise along.

Here, as described above, the upper blade 48 and the lower blade 5
4 are in contact with each other on the upstream side in the transport direction a and are separated from each other on the downstream side.
As shown in (A) to (C) in FIG. 1, at the position, the upper blade 48 almost contacts the lower blade 54, is slightly separated at the position, and further separated at the position. Therefore, the upper blade 48 moves so as to be separated from the cutting portion 12C after cutting, that is, at the time of returning the blade.

The processing line according to the second embodiment has not only the features of the processing line according to the first embodiment, but also the tip end surface 66 of the upper blade 48 when the blade returns.
Since there is no contact with the cutting edge 2C, even if the cutting edge tip width L of the upper blade 48 is 0.5 mm or more, the cutting portion 12C comes into contact with the cutting edge tip surface 66 to cause a return on the surface 12A side of the web 12. There is no distortion.

3. 3rd Embodiment In the processing line of 1st Embodiment, the metal plate processing apparatus 1
An example in which the metal plate processing apparatus 13 is used instead of 0 will be described below. FIG. 10 shows details of the configuration of the metal plate processing apparatus 13.
Shown in

As shown in FIG. 10, the metal plate processing device 13 has the same form as the frame 10A of the metal plate processing device 10 in the processing line of the first embodiment, and
13A, a cutting roller 24 disposed at the center of the frame 13A, and a frame 13A disposed around the frame 13A.
And a pair of cutting roller portions 25 arranged at both ends of the cutting roller.

The details of the cutting roller 27 are shown in FIGS.
It is shown in FIG.

As shown in FIGS. 10 to 12, an upper blade pressing member 100 corresponding to the rotary blade pressing member in the metal plate processing apparatus of the present invention is provided on the cutting roller portion 25 downstream of the rotary shaft 78. , Are provided at substantially the same height as the rotating shaft 78.

The upper blade pressing member 100 extends horizontally toward the base 46, and has a rod-shaped pressing portion 10 abutting on the small-diameter side end surface of the pressing roller 22 at the front end facing the base 46.
1 and a support arm 102 fixed to the base 46 at one end and supporting the pressing portion 101 at the other end. As illustrated in FIG. 11, the pressing portion 101 has a thread cut on a side surface, and a ball 101 </ b> A, which is an example of a rolling member in a rotary blade pressing member, is rotatably provided at a tip end on a side that contacts the pressing roller 22. Is held.

On the other hand, as shown in FIG. 10, the support arm 102 has an L-shaped shape in which the end 102A on the side supporting the pressing portion 101 is bent downward when viewed from the downstream side. The end portion 102A has an insertion hole (not shown) through which the pressing portion 101 is inserted. The pressing portion 101 is positioned so as to sandwich the end portion 102A, and is attached to the end portion 102A in a state of being inserted into the insertion hole by a pair of nuts 103 screwed with screws on the side surfaces of the pressing portion 101.

Therefore, the portion of the pressing roller 22 on the downstream side in the transport direction a is pressed by the pressing portion 101 in the direction toward the base 46, in other words, in the direction away from the lower blade 54. Here, since the upper blade 48 is provided integrally with the pressing roller 22, a portion of the upper blade 48 on the downstream side in the transport direction a is also the pressing portion 10.
The pressing blade 1 separates from the lower blade 54. Therefore,
Like the metal plate processing apparatus 11 in the processing line of the second embodiment, the upper blade 4
The lower blade 8 and the lower blade 54 are in contact with each other at a portion on the upstream side in the transport direction a, and are separated from each other at a portion on the downstream side. Moreover, by rotating the nut 103,
Since the pressing force from the pressing portion 101 to the pressing roller 22 can be adjusted, the degree of opening between the upper blade 48 and the lower blade 54 can be adjusted.

In the pressing portion 101, the ball 10
1A may be omitted, and a rollable roller may be provided instead of the ball 101A.

The tip width L of the upper blade 48 is 0.05
The range is not limited to 0.5 mm.

The processing line of the third embodiment not only has the features of the processing lines of the first and second embodiments, but also adjusts the pressing strength of the upper blade pressing member 100 by, for example, rotating the nut 103. By doing, the upper blade 48
The degree of opening between the upper blade 48 and the lower blade 54, that is, the angle φ can be adjusted, so that the optimum angle φ can be adjusted according to the conveying speed of the web 12 and the cutting conditions such as the rotation speed of the upper blade 48 and the lower blade 54. You can choose. Further, since the ball 101A provided at the tip of the pressing portion 101 rolls while abutting on the upper blade 48, the upper blade 48 is hardly damaged.

4. Fourth Embodiment In the processing line of the first embodiment, a metal plate processing apparatus 1
An example of a processing line in which a web separating roller is provided as a metal plate separating means on the downstream side of the processing line 0 will be described below.

Metal plate processing apparatus 1 provided in the processing line
FIGS. 13 and 14 show the positional relationship between 0 and the web separation roller 200. FIG. In FIG. 14, (A) shows the positional relationship as viewed from above, and (B) shows the positional relationship as viewed from the downstream side.

As shown in FIGS. 13 and 14, on the downstream side of the cutting roller portion 24 in the metal sheet processing apparatus 10, the outer diameter is the largest at the central portion and decreases toward both ends, in other words, A web separation roller 200 having a drum-like shape is provided.

The web separation roller 200 is parallel to the transport surface T, is rotatably held by a shaft 201 provided at right angles to the transport direction a of the web 12, and the center of the body is cut when cutting. Is arranged so as to press the cut portion 12C of the web 12 from above. The shaft 201 has a pair of arm-like members 202 each having one end fixed to the upper side of the frame 10A.
Supported by

Therefore, as shown in FIGS. 14A and 14B, the cut pieces 12F and 12G of the web 12 cut by the upper blade 50 and the lower blade 56 are:
It receives an outward force f from the web separation roller 200 and separates from the upper blade 50.

Therefore, in the processing line of the fourth embodiment, the web 12 cut by the metal plate processing apparatus 10 is used.
However, it is possible to prevent the cutting portion 12C from being returned and distorted due to contact with the upper blade 50 in the cutting portion 12C and interference with each other on the downstream side.

As described above, the apparatus for processing a metal plate of the present invention is provided.
Although the processing line used for producing the S plate has been described, the processing line is not limited to the PS plate described in Japanese Patent Application Laid-Open No. 10-100556, and is used as a so-called discarded plate without a photosensitive layer formed on the surface. Lithographic printing plate, PS plate having a photosensitive layer formed on both sides of an aluminum support,
Needless to say, a photopolymer or a thermopolymerizable prepolymer can be used for the photosensitive layer and used for the production of PS plates used for digital printing plates.

It goes without saying that the metal sheet processing apparatus of the present invention can be used for cutting ordinary surface-treated metal sheets such as painted steel sheets and surface-treated steel sheets.

[0099]

The present invention will be described in more detail with reference to the following examples. (Examples 1 to 4 and Comparative Examples 1 and 2) The following PS plates were prepared as evaluation materials.

A surface of a 0.30 mm-thick rolled JIS-A1050 aluminum plate was coated with a 400-mesh 20% by weight aqueous suspension of pumicestone (manufactured by Kyoritsu Ceramics) and a rotating nylon brush (6,10-nylon). After graining with the use, it was washed well with water.

The grained aluminum material was treated with a 15% by weight aqueous solution of sodium hydroxide (4.5% by weight of aluminum).
) And etched so that the amount of aluminum dissolved was 5 g / m ² , followed by washing with running water.

Further, the surface of the aluminum plate was neutralized with 1% by weight of nitric acid, and then in an aqueous solution of 0.7% by weight of nitric acid (containing 0.5% by weight of aluminum), the voltage at the time of anode was 10.5 volts and the time of cathode was Using a 9.3 volt square wave alternating waveform voltage (current ratio r = 0.90, current waveform described in the example of Japanese Patent Publication No. 58-5796), 160-coulomb / dm ² anode-time electricity The electrolytic surface roughening treatment was performed by the amount. After washing with water, the substrate was immersed in a 10% by weight aqueous solution of sodium hydroxide at 35 ° C., etched so that the amount of aluminum dissolved was 1 g / m ² , and then washed with water. Next, it was immersed in a 50% by weight aqueous solution of 30% by weight sulfuric acid, desmutted, and washed with water.

Further, in a 20% by weight aqueous sulfuric acid solution (containing 0.8% by weight of aluminum) at 35 ° C., the anodic oxide film weight was increased to 2.7 g / m ² at a current density of 13 A / dm ² using a direct current. The porous anodic oxide film is formed by performing electrolysis for such an electrolysis time, and then washed with water and then added to a 3% by weight aqueous solution of sodium silicate at 70 ° C.
It was immersed for 0 second, washed with water and dried.

The support obtained as described above has a reflection density of 0.3 as measured by a Macbeth RD920 reflection densitometer.
0, and the center line average roughness Ra defined in JIS B00601 was 0.58 μm.

Next, methyl methacrylate /
A 1.0% by weight aqueous solution of an ethyl acrylate / 2-acrylamide-2-methylpropanesulfonate sodium copolymer (average molecular weight: about 60,000) (molar ratio: 50/30/20) is applied after drying by a roll coater. Amount 0.0
Coating was performed so as to be 5 g / m ² .

Further, the following photosensitive solution-1 was applied using a bar coater and dried at 110 ° C. for 45 seconds. The dry coating amount was 2.0 g / m ² . Photosensitive solution-1 Diazo resin-1 ... 0.50 g Binder-1 ... 5.00 g Stylite HS-2 (manufactured by Daido Kogyo KK) ... 0.10 g Victoria Pure Blue BOH ... 0.15 g Tricresyl phosphate ... 0 .50 g dipicolinic acid ... 0.20 g FC-430 (surfactant manufactured by 3M) ... 0.05 g Solvent 1-methoxy-2-propanol ... 25.00 g Methyl lactate ... 12.00 g Methanol ... 30.00 g Methyl ethyl ketone ... 30. 00g water 3.00 g The above diazo resin-1 is a diazo resin synthesized by the following procedure.

First, 29.4 g of 4-diazodiphenylamine sulfate (purity: 99.5%) was gradually added to 70 ml of 96% sulfuric acid at 25 ° C. while stirring for 20 minutes, and paraformaldehyde (purity: 92%) was added. 26 g was added slowly over about 10 minutes.

The resulting mixture was stirred at 30 ° C. for 4 hours,
The condensation reaction was allowed to proceed. The condensation molar ratio between the diazo compound and formaldehyde was 1: 1.

The obtained reaction product was poured into 2 liters of ice water while stirring, and treated with a cold concentrated aqueous solution in which 130 g of sodium chloride was dissolved.

The resulting precipitate was collected by suction filtration,
The partially dried solid was dissolved in 1 liter of water and filtered, the resulting filtrate was cooled with ice and then treated with an aqueous solution of 23 g of potassium hexafluorophosphate.

Finally, the obtained precipitate was collected by filtration and air-dried to obtain diazo resin-1.

Binder-1 was 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) is a film-forming polymer that is insoluble in water but soluble in an alkaline solution.

Stylite HS-2 (manufactured by Daido Industry Co., Ltd.)
Is styrene / mono-4-methyl-2-pentyl maleate = 50/50, which is more oil-sensitive than the binder.
(Molar ratio), having an average molecular weight of about 100,
000.

A mat layer was formed by spraying a mat layer forming resin solution on the surface of the thus prepared photosensitive layer as described below.

As a resin solution for forming a mat layer, methyl methacrylate / ethyl acrylate / 2-acrylamide-
2-methylpropanesulfonic acid (65: 2 weight ratio charged)
0:15) 12% of a part of the copolymer as a sodium salt
An aqueous solution was prepared, and the number of rotations of the atomization head was 25,000 rpm and the amount of the resin solution sent was 4.0 ml /
The resin liquid for forming a mat layer was applied to the support under the conditions that the applied voltage to the atomizing head was -90 kV, the ambient temperature during application was 25 ° C, and the relative humidity was 50%. When 2.5 seconds had passed after the application, steam was sprayed on the application surface to make it wet, and then 3 seconds later, hot air at a temperature of 60 ° C. and a humidity of 10% was blown for 5 seconds to dry. The average height of the mat was about 6 μm, the average size was about 30 μm, and the application amount was 150 mg / m ² .

The thus obtained sheet has a thickness of 0.3 mm,
A coil-shaped web having a width of 820 mm was cut by a processing line shown in FIG. 1 under the conditions shown in Table 1 below so as to have a width of 400 mm, thereby producing a sheet-shaped PS plate having a cut length of 1100 mm.

The obtained PS plate was visually observed to evaluate whether or not it had returned to the surface. After the PS plate was prepared, the upper blade 48 and the upper blade 50 were visually observed to evaluate whether or not blade spillage occurred. O and X in Table 1 indicate the following evaluations. Return to the front side…: No return was visually observed.

X: At least one return was observed per side. Blade spill ○: No blade spill was visually observed.

C: One or more blade spills were visually observed.

An image was exposed on the obtained PS plate,
Using an automatic processor (Fuji Photo Film Co., Ltd.)
-3C (Fuji Photo Film Co., Ltd., alkaline aqueous developer) was developed with a solution diluted 1: 1 with water. GN (Gum manufactured by Fuji Photo Film Co., Ltd.) was used as a finisher, and a solution obtained by diluting this with water at a ratio of 1: 1 was applied immediately after development and dried to complete plate making. Using this printing plate, 20,000 sheets were printed with an offset rotary printing machine at a speed of 100,000 sheets / hour using magenta ink that easily causes crack stains, and the edge of the paper surface, that is, edge stain was evaluated. Table 1 shows the results.

In Table 1, .largecircle. Indicates that no edge stain was observed by visual observation, and X indicates that edge stain was clearly observed.

[0122]

[Table 1]

[0123]

According to the first aspect of the present invention, there is provided a metal sheet processing apparatus in which the cutting portion is unlikely to be bent or distorted, and the cutting member is less likely to be spilled even after cutting for a long time. Is done.

According to the invention described in claim 2, according to claim 1
A metal plate processing apparatus is provided which can more effectively prevent the return and distortion from occurring at the cut portion of the metal plate to be cut than the metal sheet processing apparatus according to the present invention.

According to the third aspect of the present invention, the first aspect is provided.
Alternatively, there is provided a metal sheet processing apparatus having the features of the metal sheet processing apparatus according to claim 2 and capable of cutting the metal sheet to be cut continuously and having high production efficiency.

According to the invention set forth in claim 4, according to claim 2,
And a metal plate processing apparatus which does not require a special mechanism for moving the cutting member away from the cut portion of the metal plate to be cut.

According to the fifth aspect of the present invention, the pair of rotary blades are arranged so as to contact each other on the upstream side in the transport direction of the metal plate to be cut and to be separated from each other on the downstream side. A metal sheet processing apparatus that does not require the addition of a new member is provided.

According to the sixth aspect of the present invention, there is provided a metal plate processing apparatus capable of adjusting a separation distance between rotary blades.

According to the invention of claim 7, according to claim 6,
A metal plate processing apparatus having the same features as the metal plate processing apparatus according to the first aspect, and in which the rotary blade is not damaged by the rotary blade pressing member.

According to the eighth aspect of the present invention, there is provided a metal plate processing apparatus capable of preventing occurrence of bending and distortion at a cutting portion even when the tip width and arrangement of a rotary blade are the same as those in the related art. .

The metal plate processing apparatus provided by the invention according to the ninth aspect is characterized in that, although the configuration of the metal plate separating means is simple, it is possible to surely prevent the occurrence of bending and distortion at the cut portion. Having.

According to the tenth aspect of the present invention, there is provided a metal sheet processing method in which bending and distortion in a cut portion hardly occur.

According to the eleventh aspect of the present invention, there is provided a metal sheet processing method capable of more reliably preventing occurrence of bending and distortion in a cut portion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the outline of the configuration of a processing line according to a first embodiment which includes a metal plate processing apparatus of the present invention and cuts a web to produce a PS plate.

FIG. 2 is a front view showing details of a metal plate processing apparatus in the processing line shown in FIG. 1;

FIG. 3 is a sectional view showing details of an upper blade provided in the metal plate processing apparatus shown in FIG. 2;

FIG. 4 is an enlarged view showing the vicinity of a tip end surface of the upper blade shown in FIG. 3;

FIG. 5 is a perspective view of the metal sheet processing apparatus shown in FIG. 2;
FIG. 4 is a partial cutaway view showing a state in which a web is cut by an upper blade and a lower blade, and a cut portion of the web is pressed by a pressing roller.

FIG. 6 is a cross-sectional view in a direction perpendicular to the web transport direction showing a state in which the web is cut in the metal sheet processing apparatus shown in FIG. 2;

FIG. 7 is a schematic diagram illustrating a relative positional relationship between an upper blade and a lower blade in a metal plate processing apparatus included in a processing line according to a second embodiment when viewed from above.

FIG. 8 is a schematic diagram showing a relative positional relationship between an upper blade, a lower blade, and a web with respect to a web transport surface when viewed from the side.

FIG. 9 is a schematic diagram showing a relative positional relationship between the upper blade, the lower blade, and the web in the metal plate processing apparatus at the time of starting cutting, pressing, and returning the blade.

FIG. 10 is a schematic diagram illustrating a configuration of a metal sheet processing apparatus provided in a processing line according to a third embodiment.

FIG. 11 is an enlarged view showing details of a configuration of the metal plate processing apparatus shown in FIG. 10;

FIG. 12 is a schematic diagram showing a mutual positional relationship among an upper blade, a lower blade, a web, and an upper blade pressing member in the metal sheet processing apparatus shown in FIG. 11;

FIG. 13 is a front view showing a configuration of a metal plate processing apparatus provided in a processing line according to a fourth embodiment, viewed from a downstream side in a web transport direction.

FIG. 14 is a schematic view showing a relative relationship among an upper blade, a lower blade, a pressing roller, a web separation roller, and a web in the metal plate processing apparatus.

FIG. 15 is a schematic view showing the relative positions of an upper blade, a lower blade, a pressing roller, and a web in a web cutting device which is an example of a conventional metal plate cutting device.

FIG. 16 is a schematic diagram showing a relative positional relationship between an upper blade, a lower blade, and a web in the web cutting device shown in FIG. 15 at the time of starting cutting, pressing, and returning the blade.

[Explanation of symbols]

10, 11, 13: metal plate processing device, 12: web, 1
4 ... Sending machine, 15 ... Leveler, 16 ... Sending roller, 18 ...
Interleaf paper, 20 ... notcher, 21 ... cutting unit, 22 ...
Pressing roller, 22A: outer peripheral surface, 23: suction pipe, 2
4, 25: cutting roller section, 26: length measuring device, 28: running cutter, 29: pressing roller, 29A: outer peripheral surface, 30: P
S-plate, 32: Conveyor, 34: Stacking unit, 35: Conveying unit,
40, 41: support roller, 42: receiving roller, 42A ...
Reduced diameter part, 44 ... rail, 46 ... base, 48, 50 ... upper blade, 52 ... disk spring, 54, 56 ... lower blade, 58, 60 ... recessed part, 59 ... blade tip surface, 62 ... bulging allowable recess Part, 64: Offset surface, 66: Blade tip end surface, 72: Cutting waste receiver, 7
4 ... inclined surface, 78, 79, 80, 81 ... rotating shaft, 82 ...
Recovery conveyor, 84 Recovery box, 86 Cutting waste, 90 Processing line, 100 Upper blade pressing member, 101 Pressing part, 1
01A: ball, 102: support arm, 103: nut, 2
00: web separation roller, 201: shaft, 202: arm-shaped member, A: upper blade, B: lower blade, C: pressing roller, A1: blade tip surface, A2: bulge allowable portion, A3: blade tip surface, W ... Web, W1. Cut section, W2.

Claims (11)

[Claims] A cutting member that cuts the metal plate to be cut in a thickness direction; and a cutting member that is provided integrally with the cutting member and that cuts the metal plate to be cut when the metal member is cut by the cutting member. A pressing member that presses the portion in the thickness direction to form an inclined surface, wherein the cutting member allows the cutting portion to bulge when pressed by the pressing member. Part is formed, and the width of the blade tip end surface contributing to cutting from the swelling permitting part to the blade of the cutting member is 0.05 to 0.5.
mm. 2. A cutting member for cutting a metal plate to be cut in a thickness direction, and a cutting member provided integrally with the cutting member and cutting the metal plate to be cut when cutting the metal plate with the cutting member. A pressing member that presses the portion in the thickness direction to form an inclined surface, wherein after cutting, the cutting member moves away from the cutting portion and returns to a position before cutting. A metal plate processing apparatus characterized by being formed in a metal plate. 3. The cutting member cuts a metal plate to be conveyed in a certain direction by rotating from an upstream side to a downstream side in a conveying direction of the metal plate to be cut in a vicinity of a cutting portion. A pair of rotary blades, wherein the pressing member is disposed coaxially with one of the rotary blades,
The metal plate processing apparatus according to claim 1, wherein the metal plate processing device is a rotation pressing member that rotates in contact with the metal plate to be cut at a constant speed. 4. The metal plate according to claim 3, wherein the pair of rotary blades are arranged so as to contact each other on the upstream side in the transport direction of the metal plate to be cut, and to be separated from each other on the downstream side. Processing equipment. 5. The rotating shafts of the rotary blades are mutually twisted such that the pair of rotary blades are in contact with each other on the upstream side in the transport direction of the metal plate to be cut and are separated from each other on the downstream side. The metal plate processing apparatus according to claim 4, wherein the metal sheet processing apparatus is arranged in a metal plate. 6. A rotary blade pressing member that presses one of the rotary blades such that the pair of rotary blades are in contact with each other on the upstream side in the transport direction of the metal plate to be cut and are separated from each other on the downstream side. The metal plate processing apparatus according to claim 4, comprising: 7. The metal plate processing apparatus according to claim 6, wherein the rotary blade pressing member includes a rolling member that rotates while being in contact with the rotary blade, at an end on the side that presses the rotary blade. . 8. A metal plate to be cut conveyed in a certain direction,
In the vicinity of the cutting portion, a pair of rotating blades that rotate and cut from the upstream side to the downstream side with respect to the transport direction of the metal plate to be cut, and one of the rotating blades, are arranged integrally and coaxially, It is formed so as to rotate at the same speed as the transport speed in contact with the metal plate to be cut, and when cutting the metal plate to be cut with the rotary blade, the cut portion of the metal plate to be cut has a thickness. A metal plate comprising: a rotation pressing member that presses in a direction to form an inclined surface; and a metal plate separation unit that separates the cut metal plate cut by the rotary blade from the rotary blade. Processing equipment. 9. The metal plate separating means has a drum-shaped body whose outer diameter decreases from a center part toward both ends, and a center part of the body presses a cutting part of the metal plate to be cut. The metal plate processing apparatus according to claim 8, wherein the metal plate processing roller is a metal plate separation roller arranged so as to be disposed. 10. A cutting device having a swelling permitting portion formed in the vicinity of the cutting edge, wherein the width of the tip end surface contributing to cutting from the swelling permitting portion to the cutting edge is 0.05 to 0.5 mm. A cutting step of cutting the metal plate to be cut in the thickness direction by using a member, and simultaneously with the cutting step, a pressing member provided integrally with the cutting member to cut a cut portion of the metal plate to be cut in the thickness direction. Pressing to form an inclined surface, and a pressing step of swelling the cut portion toward the swelling allowance portion,
A method for processing a metal plate, comprising: 11. A cutting step of cutting a metal plate to be cut in a thickness direction using a cutting member having a swellable portion formed in the vicinity of a cutting edge, and after the cutting step, integrated with the cutting member. The pressing step provided to press the cut portion of the metal plate to be cut in the thickness direction to form an inclined surface, and the cutting edge of the cutting member that cuts the metal plate to be cut before cutting. Returning the blade to a position. In the blade return step, the cutting member is moved so as to be separated from the cutting portion.