GB2328172A

GB2328172A - Die and rotary die cutter using the same

Info

Publication number: GB2328172A
Application number: GB9724927A
Authority: GB
Inventors: Hiroshi Tsunoda
Original assignee: Isowa KK
Current assignee: Isowa KK
Priority date: 1997-08-12
Filing date: 1997-11-25
Publication date: 1999-02-17
Also published as: DE19754868A1; GB9724927D0; TW372213B; JPH1158298A; FR2767280A1; ITMI972784A1; IT1296872B1

Abstract

The axial lines L1 of a die cylinder 20 and anvil cylinder 24 disposed between a pair of frames 50, 50 spaced from each other in the direction crossing the sheet feeding direction P are set to be parallel to the reference line L2 orthogonal to the sheet feeding direction R The die 52 is attached to the die cylinder 20 so that the lateral die cutting blade 54b forming a lateral die cutting line 26 on the sheet material 12 is inclined an appointed degree of angle (#1) with respect to the reference line L2. The lateral die cutting blade 54a is gradually brought into contact with the sheet material 12 from one end side to the other end side in the lengthwise direction, thereby causing the sheet material 12 to be die cut, and preventing a large die cutting force being applied to both the cylinders 20, 24.

Description

1 DIE AND ROTARY DIE CU= USING THE SAME

BACKGROUND OF THE INVEISMON

Field of the Invention

2328172 The present invention relates to a die in which a die cutting blade is planted in a curved board and a rotary die cutter which die-cuts a sheet material to an appointed shape by the abovementioned die cutting blade by causing said sheet material to pass between a die cylinder to which said die is attached, and an anvil cylinder.

Description of the Related Art

A rotary die cutter has been prefbrably used as a means for forming blanks, etc. which will be a base material of carton boxes which can be assembled and disassembled, by die-cutting a sheet material such as sheetlike corrugated cardboard to an appointed shape. The rotary die cuttex is provided with a a die der to which a die having a die cutting blade of an appointed shape planted in a board of curved shape is detachably attached, and an anvil der havmg its axial line disposed m parallel to the die cylinder, to which an anvil made of urethane material is attached, wherein the anvil is able to receive the blade tip of the abovementioned die cutting blade m a contacted state. Both cylinders are mutually driven m an opposite direction by an outside drive source to which the cylinders are commonly connected via a gear train. Therefore, a sheet material, which is represented by a corrugated cardboard, horizontally fed between both the ders, is put between the abovementioned die cutting blade and the anvil cylinder and fed forward, and m this process the corresponding sheet material is die cutting (so-called soft-cut) to an appointed shape.

Furthermore, in the abovementioned rotary die cutter, in addition to a "soft cuf'type m which an anvil made of urethane material is attached to the anvil cylinder, a ed "senii-hard cuCtype in which a metallic plate made of material such as stainless steel, aluminium or copper, etc. is attached to the outer circumference of a cylinder constructed of an ironofiented hard material,:whdmn;-,,,, sheet material is die cutting by causing a die cutting blade to be brouht into contict 1 1 1.1 0 ---0 z 7.. - 2 with the outer circumference of the metallic plate, and a so-called "hard- cuf' type m which a sheet material is die cutting by causing a die cutting to be directly brought into contact with the outer circumferential. surface of a cyhnder without applymg a metallic plate are available.

In the abovementioned rotary die cuttex, the die cylinder is disposed so that its axial line is made parallel to the reference line orthogonal to the sheet feeding direction. Therefore, a lateral die cutting blade which is disposed at the abovementioned die and laterally creases a sheet material in parallel to the reference line is set so as to become parallel to the corresponding reference Ene. When die cutting the sheet material by using the lateral die cutting blade set as described above, since the corresponding blade is brought into contact with the sheet material at the entim length thereof, a great stress is instantly applied to the die cylinder and the anvil der.

Since such impact load is repeatedty given to both the cylinders, there is a problem by which the service life of bearing portions, etc. of the cylinders is shortenedTherefore, although a countermeasure is taken to increase the mechanical strength of the bearings, etc., such a shortcoming arises, where the system is made large- resulting in an increase of the production cost. Furthermore, in a case of the abovementioned "senn-hard cut typ6' or "hard-cut typJ, since the lateral die-cuttmg blade of the the is directly brought mto contact with the outer circumferential surface of the cyhnder, there arises another problem by which vibrations occur or the blade may be damaged, etc.

Furthermore, in the rotary die cutter, in order to score a sheet material for folding to make carton boxes, etc., there is a case where a die having a scoring blade for scoring planted in the abovementioned curved board is used. At this time, impact load is given to the scoring blade for scoring in parallel to the reference hne as in the abovementioned lateral die-cutting blade, and a problem is pointed out, where a scoring line is strongly given to cause breakage to occur due to the scoring. That is, in the rotary die cutter, since the die cutting of sheet materials is enabled by causing the tip end of a die cutting blade protruding from the curved board to be engaged in the anvil, the surface of the corresponding anvil is obliged to be damaged due to engagement of the abovementioned blade if the die cutting work is continued f(or.,-a long time. The part where the tip end of the blade is engaged in is unavoidably W'OM 3 due to the damage at the anvil. Accordingly, in this case, the axial distance between the die cylinder and the anvil cylinder is shortened m order to securely carry out the die cutting and the engagement quantity of the die-cutting blade is secured with respect to the anvil cylinder. However, the interval between the scoring blade and the anvil cylinder is also shortened to cause the sheet material to be unnecessarily strongly scored, resulting m a damage due to the scoring. Furthermore, even m a case of the "semi-hard typer or "hard typer, since the tip end of the die cutting blade is caused to become dull as time elapses, good die cutting will not be earned out. Therefore, at this time, the axial distance between the the cylinder and the anvil cylinder is alw shortened, still another problem arisies, by which such a scoring damage as mentioned above will occur.

As a result of wearing at only the part where the tip end of the die cutting blade is engaged in at the anvil, the surface of the anvil is made uneven (concave and convex), still another problem arises, by which the scoring performed by the abovementioned scoring blade can not be carried out smoothly. In this respect, although the part m which the tip end of the die cutting blade is engaged with respect to the anvil cylinder is changed by shifting the die cylinder in its axial direction, no good result could be expected because of the lateral die-cutting blade being parallel to the axial line of the corresponding cylinder.

SLIAY OF THE PATIMON The invention was proposed in order to favorably solve the problems internally existing in the abovementioned prior arts, and it is therefore an object of the invention to provide a die which ensures a longer period of service life of diecutting blade, scoring blade, and die cylinder, etc. and a rotary die cutter in which they are used.

In order to solve the abovementioned problematic points and to favorably achieve the object, an invention of the present application is a die consisting of a curved board detachably attached to a die cylinder and a die cutting blade planted in the coronding board in order to perform an appointed die cutting at a sheet-like material, and is characterized in that a lateral die cutting blade, extending in parallel to the front edge of the abovementioned sheet material, for applying a lateral die cutting line onto the 4 corresponding material is planted so that it is spiral on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optical portion m the extending direction thereof is caused to cross the aMal line of the abovementioned die cylinder, and that a longitudinal die cutting blade, extending in parallel to the side edge of the abovementioned sheet material, for applying a longitudinal die cutting line onto the corresponding material is planted so that it is spiral on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optical portion in the extending direction thereof is caused to cross the axial line of the abovementioned die cylinder.

In order to solve the abovementioned problematic points and to favorably achieve the object, another invention of the present application is a die consisting of a curved board detachably attached to a die cylinder disposed so as to crow the feeding direction of a sheet-like material and a the cutting blade planted m the corresponding board, and is characterized in that a lateral die cutting blade for applying a lateral die cutting line of an appointed length, which crosses the feeding on of the abovementioned sheet material, onto the corresponding material is positioned to be spiral with the abovementioned curbed board attached to a die cylinder and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction of the lateral die cutting blade is set so as to cross the axial line of the die cylinder, and that a longitudinal die cutting blade for applying a longitudinal die cutting line of an appointed length crossing the feeding direction of the abovementioned sheet material onto the corresponding material is positioned to be spiral with the abovementioned. curved board attached to the die cylinder, and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending duw-ton of the longitudinal the cutting blade is set so as to cross the a)dal line of the die cylinder.

In order to solve the abovementioned problematic points and to favorably achieve the object, stfl another invention of the application is a die consisting of a die cylinder detachably disposed so as to cross the feeding direction of a sheet-like material and a die cutting blade planted in the corresponding board, and is characterized in 1 5 U that a lateral die cutting blade for applying a lateral die cutting line of an appointed length, which crowes; the feeding direction of the abovementaoned sheet material, onto the corresponding material is positioned to be spiral with the abovementioned curved board attached to a die cylinder, and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction at the lateral die cutting blade is set so as to cross the axial line of the die cylinder, and that a longitudinal die cutting blade for applying a longitudinal die cutting line of an appointed length, which is parallel to the feeding direction of the abovementioned sheet material, onto the corresponding material is positioned to be spiral with the abovementioned curved board attached to a die cylinder, and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction at the longitudinal the cutting blade is set so as to cross; the axial line of the die cylinder.

In order to solve the abovementioned problematic points and to favorably achieve the object, still another invention of the application is a die consisting of a curved board detachably disposed on a die cylinder and a scoring blade planted m the corresponding board in order to apply a scoring line onto a sheet-like ma and is characterized in that a lateral scoring blade, of the abovementioned scoring blade, extending in parallel to the front edge of the abovementioned sheet material, for applying a lateral sconng line onto the corresponding material and is planted so that it is spn-al on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction thereof crosses the axial line of the abovementioned che cylinder, and that a longitudinal scoring blade, of the abovementioned scoring blade, extending in parallel to the side edge of the abovementioned sheet material, for applying a longitudinal scoring line onto the corresponding material is planted so that it is spiral on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending line thereof crosses the anal line of the abovementioned die cylinder.

In order to solve the abovementioned problematic points and to favorably achieve the object, still another invention of the application is a die consisting of a curved board detachably attached to a die cylinder disposed so as to cross the feeding 6 direction of a sheet-like material and a scoring blade planted in the corresponding board, and is characterized in that a lateral scoring blade for applying a lateral scoring line of an appointed length, which crosses the feeding direction of the abovementioned sheet material, onto the corresponding material is positioned to be spiral with the abovementioned curved board attached to a die der, and the perpendicular line extending from the blade tip end to the blade root at any optional position m the extendirig direction at the lateral scoring blade is set so as to cross the axial line of the die cylinder, and that a longitudinal scoring blade for applying a longitudinal scoring line of an appointed length, which crosses the feeding direction of the abovementioned sheet mat onto the corresponding material is positioned to be spiral with the abovementioned curved board attached to a die cylmder, and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction at the longitudinal scoring blade is set so as to cross the axial line of the die cylinder.

In order to solve the abavementioned problematic points and to favorably achieve the object, still another invention of the application is a die con-g of a curved board detachably attached to a die der disposed so as to cross the feedmg direction of a sheet-like material and a scoring blade planted in the corresponding board, and is characterized in that a lateral scoring blade for applying a lateral crossing line of an appointed length, which crosses the feeding direction of the abovementioned sheet material, onto the corresponding material is positioned to be spiral with the abovementioned curved board attached to a die der, and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending on at the lateral scoring blade is set so as to cr-oss the axial line of the die der, and that a longitudinal scoring blade for applying a longitudinal scoring line of an appointed length, which is parallel to the feeding direction of the abovementioned sheet material, onto the corresponding material is positioned to be spiral with the abovementioned curved board attached to a die cylinder, and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction at the longitudinal scoring blade is set so as to cross the axial line of the die cylinder.

In order to solve the abovementioned problematic points and to favorably c 7 achieve the object, still. another invention of the application is a die consisting of a curved board detachably attached to a die cylinder and a die cutting blade and a scoring blade which are planted in the corresponding board, in order to apply an appointed die cutting and scoring onto a sheet-like ma and is characterized in that a lateral die cutting blade, of the die cutting blade, extending in parallel to the front edge of the abovementioned sheet material, for applying a lateral die cutting line onto the corresponding material is planted so that it is spiral on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction thereof crosses the axial line of the abovementioned die cylinder, that a lateral scoring blade, of the abovementioned scoring blade, extending in parallel to the front edge of the abovementioned sheet material, for applying a scoring line onto the corresponding materW is planted so that it is spiral on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction thereof crosses the axial line of the abovementioned die cylinder, and that a longitudinal scoring blade, of the abovementioned scoring blade, extending in parallel to the side edge of the abovementioned sheet material, for applying a longitudinal scoring line onto the corresponding material is planted so that it is spiral on the abovementioned curved board and the perpendicular line extending from the blade tip end to the blade root at any optional position in the extending direction thereof crosses the anal line of the abovementioned the cylinder.

In order to solve the abovementioned problematic points and to favorably achieve the object, still. another invention of the application is a rotary die cutter which is provided with a die cylinder driven and rotated in an appointed direction with a die detachably attached thereto, which has a die cutting blade planted in a curved board, and an anvil cylinder disposed m parallel to the die cylinder and is driven and rotated in the direction opposite the corresponding the cylinder, wherein a sheet-like material is supplied between both the cylinders in an inclined state where the front edge of the abovementioned sheet material in the sheet feeding on cinsses the reference line orthogonal to the corresponding feeding direction at an appointed degree of angle, and a die cutting of an appointed shape is applied to the abovementioned sheet material via the abovementioned die cutting blade, wherein the abovementioned die is provided with a lateral die cutting blade set so that it is positioned to be spiral with the curved board attached to the die 8 cylinder and the perpendicular line extending from the blade tip end to the blade root at each position in the extending on thereof crosses the axial line of the die cylinder, and a longitudinal die cutting blade set so that it is positioned to be spiral with the curved board attached to the die cylinder and the perpendicular line extending from the blade tip end to the blade root at each position in the extending direction thereof crosses the axial line of the die cylinder, wherein the abovementioned the cylinder is disposed so that the axial line thereof becomes parallel to the abovementioned reference line, wherein with respect to the die cylinder, the abovementioned die is attached thereto so that the abovementioned lateral die cutting blade is inclined with respect to the axial line of the die cylinder in the opposite direction at almost the same degree of angle as the inclination angle of the front edge of the abovementioned sheet material to the reference line and the abovementioned longitudinal die cutting blade is inclined with respect to the sheet feeding direction at almost the same degree of angle as the inclination angle to the axial line of the lateral die cutting blade, and wherein on a sheet material supplied between the abovementioned die cylinder and anvil cylinder in an inclined state, a lateral die cutting line crossing the reference line is punched by the abovementioned lateral die cutting blade and a longitudinal die cutting line crossing the sheet feeding direction is punched by the abovementioned longitudinal die cutting blade.

In order to solve the abovementioned problematic points and to favorably achieve the object, still another invention of the application is a rotaiy die cutter which is provided with a die cylinder driven and rotated in an appointed direction with a die detachably attached thereto, which has a die cutting blade planted in a curved board, and an anvil cylinder disposed m parallel to the die cylinder and is driven and rotated in the direction opposite the corresponding the ffiffider, where- in a sheet-like material formed to be rectangular is supplied between both the ders in an inclined state that the front edge m the sheet feeding dhwton thereof crosses the reference line orthogonal to the corresponding feeding direction at an appointed degree of angle and a die cutting of an appointed shape is applied to the sheet material via the abovementioned die cutting blade, wherein the abovementioned die is provided with a lateral the cutting blade set so that it is positioned to be spiral with the curved board attached to the die ffiffider and the perpendicular line extending from the blade tip end to the blade root at each position in the extending direction thereof crosses the axial line of the die 9 cylinder, by which a lateral die cutting line parallel to the front edge of the abovementioned sheet material is applied to the corresponding material, and a longitudinal die cutting blade set so that it is positioned to be spiral with the curved board attached to the die cylinder and the perpendicular line extending from the blade tip end to the blade root at each position in the extending direction thereof crosses the axial. line of the die cylinder, by which a longitudinal die cutting line parallel to the side edge orthogonal to the front edge at the abovementioned sheet material is applied to the corresponding material, wherein the abovementioned die cylinder is disposed so that the axial line thereof becomes parallel to the abovementioned reference line, wherein with respect to the die cylinder, the abovementioned die is attached thereto so that the abovementioned lateral die cutting blade is inclined with respect to the anal line of the die cylinder m the opposite direction at almost the same degree of angle as the inclination angle of the front edge of the abovementioned sheet material to the reference line and the abovementioned longitudinal die cutting blade is inclined with respect to the sheet feeding don at almost the same degree of angle as the inclin ation angle to the axial line of the lateral die cutting blade, and wherein on a sheet material supplied between the abovementioned die cylinder and anvil cyImder m an inclined state, a lateral the cuttmg line crossing the reference line is punched by the abovementioned lateral die cutting blade and a longitudinal die cutting line in parallel to the side edge is punched by the abovementioned longitudinal die cutting blade.

In order to solve the abovementioned problematic points and to favorably achieve the object, still another invention of the application is a rotary die cutter which is provided with a die cylinder driven and rotated in an appointed direction with a the detachably attached thereto, which has a the cutting blade planted m a curved board, and an anvil cylinder disposed in parallel to the die der and is driven and rotated m the direction opposite the corresponding the der, wherein a sheet-like material is supplied between both the cylinders in a reference state where the front edge in the sheet feeding direction becomes parallel to the reference line orthogonal to the corresponding feeding direction, and a die cutting of an appointed shape is applied onto the sheet material by the abovementioned die cutting blade, wherein the abovementioned the is provided with a lateral the cutting blade set so that it is positioned to be spiral with the curved board attached to the die cylinder and the perpendicular line extending from the blade tip end to the blade root I- at each position in the extending direction thereof crosses the axial line of the die cylinder, and a longitudinal die cutting blade set so that it is positioned to be spiral with the curved board attached to the die cylinder and the perpendicular line extending from the blade tip end to the blade root at each position in the extending direction thereof crosses the axial line of the die cylinder, wherein the abovementioned die cylinder is disposed so that the axial line thereof is inclined with respect to the abovementioned reference line, wherein a die is attached to the abovementioned die cylinder m a state where the lateral die cutting blade of the die cutting blades, which applies a lateral die cutting line of an appointed length parallel to the abovementioned reference line is inclined with respect to the die cylinder in the same direction at almost the same degree of angle as the inclination angle of the axial line to the reference line, and wherein a lateral die cutting line parallel to the reference line is applied onto the sheet material supplied in the reference state between the abovementioned die cylinder and the anvil cylinder by the abovementioned lateral die cutting blade.

BRIEF DESCRIMON OF THE DRAWINGS In the accompanying drawings; FIG. 1 is a plan view showing the structure of a rotary die cutter according to a first preferred embodiment of the invention, FIG.2 is a rough perspective view showing a rotary die cutter according to the first preferred embodiment, FIG.3 is a rough perspective view showing a die cylinder according to the first preferred embodiment, FIGA is an explanatory view showing a Curbed board removed from the die cylinder according to the first preferred embodiment in its developed state, F1G.5 is an explanatory view showing the relationship between the perpendicular line of a lateral die cutting blade in a die according to the first preferred embodiment and the axial line of the die cylinder, I,-- 11 FIG.6 is an explanatory view showing the relationship between a die cylinder and a lateral die cutting blade in the die in a case where the diameter of the die cylinder according to the first preferred embodiment changes, FIG.7 is an explanatory view showing the relationship between a longitudinal die cutting blade in the die according to the first preferred embodiment and the die cylinder, FIG.8 is an explanatory view showing the between the perpendicular line of a longitudinal die cutting blade of the die according to the fixst preferred embodiment and the axial line of the die cylinder, FIG.9 is an explanatory view showing the between the perpendicular line of a longitudinal die cutting blade in the die according to the first preferred embodiment and the axial line of the die cylinder, FIG. 10 is a plan view showing the structure of a rotary die cutter according to a second preferred embodiment of the invention, FIG. 11 is a plan view showing a die cylinder according to the second preferred embodiment and the curved board of a die removed from the corresponding die cylinder m their developed state, FIG. 12 is a plan view of a die cylinder to which a die according to the second preferred embodiment is attached, FIG. 13 is a plan view showing a state where a die cutting is applied to a sheet material by the rotary die cutter according to the second preferred embodiment, FIG. 14 is an explanatory view showing a printer die cutter in which the rotary die cutter acwrdmg to the second preferred embodiment is employed, and FIG. 15 is an explanatory view showing another example of a die cutting line and a scoring line applied to a sheet material.

DETAILED DESCRIMON OF THE PREFERRED EMBODBAENTS 12 Next, a description is given of some preferred embodiments of a die according to the present invention and a rotary die cutter using the same, with reference to the accompanying drawings.

preferred embodiment) FIG. 1 and FIG.2 briefly show the construction of a rotary die cutter according to the first preferred embodiment. The corresponding rotary die cutter is provided with a die cylinder 20 (See FIG.3) and an anvil cylinder 24, which are rotatably disposed with their axial lines L l parallel to each other, between a pair of frames 50, 50 spaced from each other in the direction of crossing the sheet feeding &iwdon P, so that they are positioned above and below the pass line of a sheet material 12, wherein a die 52 having a die cutting blade 54 of an appointed shape planted in a curved board 16 is detachably attached to the abovementioned die cylinder 20, and an anvil 22 made of urethane material, which receives the blade tip end of the abovernentioned die cutting blade 54 m an engaged state is attached to the anvil cylinder 24.. Furthermore, both cylinders 20, 24 are driven and rotated in the direction opposite each other by an outside drive source (not illustrated) to which both the cylinders are commonly connected via a gear train. Therefore, a sheet material 12 represented by a corrugated cardboard is put between the abovementioned die cutting blade 54 and anvil 24 and is fed to the downstream side, whereby in this process, the con"onding sheet material 12 is die-cut to an appointed shape.

Furthermore, in the preferred embodiment, the sheet material 12 is formedto be rectan with its long side 12a orthogonal to its short side 12b and is fed so that the long side 12a is oriented to the sheet feeding direction. Furthermore, in addition to the abovementioned "soft cuCtype, a so-called "semi-hard cuCtype in which a metallic plate made of material such as stainless steel, aluminium or copper, etc. is attached to the outer circumference of a cylinder constructed of an iron-onented hard material, wherein a sheet material is die cutting by causing a die cutting blade to be brought into contact with the outer circumference of the metallic plate, and a so-called Iiard-cuCtype in which a sheet material is die cutting by causing a die cutting to be directly brought into contact with the outer circumferential surface of a cylinder without applying a metallic plate may be employed as the anvil cylinder 24.

Both cylinders 20, 24 disposed between both of the abovementioned fi-ames 13 50, 50 are set so that their axial lines L1 become parallel to the reference line 12 orthogonal to the sheet feeding direction P, and simultaneously the die 52 is attached to the die cylinder 20 so that the lateral die cutting blade 54a, of the die cutting blade 54, forming a lateral die cutting line 26 parallel to the long side 12a of a rectangular sheet material 12 is inclined. an appointed degree of angle 0 1 with respect to the reference line L2 (See FIG. 1 and FIGA). That is, a die cutting is performed on a sheet material 12 horizontally fed between the die cylinder 20 and the anvil cylinder 24 by the lateral die cutting blade 54a being gradually brought into contact with the sheet material 12 from one end side to the other end side in the lengthwise direction (that is, the extending direction of the blade 54a). Thereby, it is possible to prevent that a stress is applied onto both the cylinders 20, 24 and the lateral die cutting blade 54a, by the lateral die cutting blade 54a being brought into contact with the sheet material 12 on its entire length at one time. Furthermore, the inclination angle of the lateral die cutting blade 54a of the die cutting blade 54 is preferably set to 10 to 150.

A detailed description is given of the disposed state of a die cutting blade 54 in the die 52. The lateral die cutting blade 54 is, with the die 52 attached to the die cylinder 20, set so that it is positioned to be spiral at a degree of angle 0 1 in an inclined state with respect to the axial line LI of the corresponding die cylinder 20 and the perpendicular line R1 extending the blade tip end KT1 to the blade root IKE I at each position in the extending direction at the corresponding lateral die cutting blade 54a. crosses (is orthogonal to) the axial line L1 of the die cylinder at all times as shown in FIGA Thereby, the load given to the blade tip end KT1 of the lateral die cutting blade 54a can be received at the axial center of the die cylinder 20, and it is possible to prevent vibrations, which may be generated by a load being given to the corresponding cylinder 20 in the eccentric direction, from occurring.

Furthermore, in a case where the length of the lateral die cutting blade 54a is made constant, a relationship can be retained. where the cydotomy 1 between one end (starting end) and the other end (termination end) in the lengthwise direction of the lateral the cylinder 20 m the outer circumference of the corresponding die cylinder 20 is made constant. That is, FIG.6 shows the relationships of the respective cyclotomies 1 when the diameter of the die cylinder 20 is changed to 400m, 50Omm, 60Omm, and 70Omm where it is assumed that the length of the lateral die cutting blade 54a is 1,00Omm. It was confirined, from the following expression (1) which I-- 14 obtains the cyclotonnes, that the respective cyclotonnes 1 is almost the same.

Expression(l) l=0.01745a'r where a: center angle of cydotomy and r: radius of the die cylinder When the diameter of the die cylinder is 40Omm: 1 = 0.01745 X 30 X 200 = 104.07 (2) When the diameter of the die cylinder is 50Omm:

1 = 0.01745 X 24 X 250 = 104.07 (3) When the diameter of the die cylinder is 60Omm:

1 = 0.0 1745 X 20 X 300 = 104.07 (4) When the diameter of the die der is 700min:

1 = 0.0 1745 x 17.14 x 350 104.07 As shown in FIGA, the longitudinal die cutting blade 54b, of the die cutting blade 54, forming a longitudinal die cutting line 27 parallel to the short side (side edge) 12b of a sheet material 12 is disposed on the curved board so as to be orthogonal to the abovementioned lateral die cutting blade 54a. Accordingly, with the abovementioned die 52 attached to the die der 20, the longitudinal die cutting blade 54b is set so that it is positioned to be spiral and inclined the same degree of angle 0 1 as the inclination angle 0 1 with respect to the reference line L2 of the lateral die cutting blade 54a. with the sheet feeding direction P and the perpendicular line R2 extending from the blade tip end K72 to the blade root IKE2 at each position in the extending on of the corresponding longitudinal die cutting blade 54b crosses the axiallineLl of the die cylinder 20 at alltimes as shown in FIG.8. Thatis,as regards the longitudinal die cutting blade 54b, since load given to the blade tip end IM can be received at the anal center of the the cylmder, it is possible to prevent the die cylirider 20 from vibrating Furthermore, the point m of intersection between the perpendicular line R2 at one end of the lengthwise direction (extending direction) at the longitudinal die cutting blade 54b and the a.Nial line L1 of the die cylinder 20 and the point n of intersection between the perpendicular line R2 at the other end in the lengthwise direction (extending direction) at the longitudinal die cutting line 54b and the axial line L1 of the die cylinder 20 are in such a relationship as being spaced an 1 appointed length m the axial direction as shown in FIG.9.

Furthermore, as regards the longitudinal die cutting blade 54b of the die 54, as shown in FIG.7, with the die cylinder observed in its plan view, the termination point b where a line segment extending in the lengthwise direction along the longitudinal die cutting blade 54b crosses the outside line of one cylinder and the termination point d where the line segment ac parallel to the sheet feeding direction P passing through the starting point of the corresponding line segment crosses the outside line of one cylinder are in such a relation as being spaced in the axial direction, and this. is able to be maintained even though the diameter of the die cylinder is changed..

A lateral scoring blade 56 and a longitudinal scoring blade 58 which give a sheet material 12 a lateral scoring line 30 and a longitudinal scoring line 32 are planted in the abovementioned curved board 16. Accordingly, the lateral scoring blade 56 is disposed to be parallel to the lateral die cutting blade 54a, and at the same time the longitudinal scoring blade 58 is disposed to be parallel to the longitudinal die cutting blade 54b, wherein the lateral scoring blade 56 is constructed so that a lateral scoring is applied onto the sheet material 12 by the lateral scoring blade 56 being gradually brought into contact with the sheet material 12 from one end to the other end in the lengthwise direction (extending direction) as in the lateral die cutting blade 54a. Furthermore, the conditions of planting the lateral scoring blade 56 and longitudinal scoring blade 58 in the curved board 16 are the same as those for the abovementioned lateral die cutting blade 54a and longitudinal die cutting blade 54b. That is, the lateral sconng blade 56 is set, with the die 52 attached to the die cylinder 20, so that it is positioned to be spiral and inclined a degree of angle 0 1 with respect to the axial line L1 of the corresponding cylinder 20, and at the same time the perpendicular line R1 extending from the blade tip end LT 1 to the blade rood LE1 at each position in the extending direction at the corresponding lateral scoring blade 56 crosses (is orthogonal to) the axial line L1 of the die cylinder 20 at all times (See FIG.5). Furthermore, the longitudinal scoring blade 58 planted in the curved board 16 so as to be orthogonal to the lateral scoring blade 56 is, with the abovementioned die 52 attached to the die cylinder 20, so that it is positioned to be spiral and inclined the same angle 0 1 as the inclination angle 0 1 with respect to the reference line L2 of the lateral scoring blade 56 in the sheet feeding direction P and the perpendicular line R2 extending from the blade tip end M to the blade root LE2 at each position in 16 the extending &rection at the coronding longitudinal scoring blade 58 crosses the axial line LI of the die cylinder 20 at all times (See FIG.8). Furthermore, the point m of intersection between the perpendicular line R2 at one end in the lengthwise direction (extending direction) at the longitudinal scoring blade 58 and the axial line L l of the die cylinder 20 and the point n of intersection between the perpendicular line R2 at the other end in the lengthwise direction (extending direction) at the longitudinal die cutting blade 54b and the axial line L1 of the die cylinder 20 are in such a as being spaced an appointed length from each other in the axial direction as in the longitudinal die cutting blade 54.. Furthermore, the lateral scoring blade 56 has the same as that of the lateral die cutting blade 54a, which is described on the basis of the abovementioned expression (1).

Herein, when forming a lateral die cutting line 26 parallel to the long side 12a of a rectan sheet material 12 by a lateral die cutting blade 54a inclined an inclination angle 0 1 with respect to the abovementioned reference line L2, it is necessary to supply the corresponding sheet material 12 between the die cylinder 20 and the anvil cylinder 24 in a state where the long side 12a of the sheet material 12 is inclined only the same angle (- 0 1) in the direction opposite the inclination direction with respect to the reference line L2 of the lateral die cutting blade 54a. Therefore, the first preferred embodiment is constructed so that a sheet material 12 is supplied with its long side (front edge side) 12a at the front side in the sheet feeding direction P inclined - 0 1 with respect to the reference line L2, between both the cylinders 20, 24 via feed rolls 28, 28 (See FIG. 1). Thereby, a lateral die cutting line 26 parallel to the long side 12a is applied onto the sheet material 12 by the lateral die cutting blade 54 of the die cutting blade 54, and at the same time a longitudinal die cutting line 27 parallel to the short side 12b orthogonal to the long side 12a is applied thereonto by the longitudinal die cutting blade 54b. Furthermore, a lateral scoring 30 parallel to the lateral die cutting line 26 is applied onto the sheet material 12 by a lateral scoring blade 56 while a longitudinal scoring 32 parallel to the longitudinal die cutting line 27 is applied thereonto by the longitudinal scoring blade 58.

(Actions of the first preferred embodiment) Next, a description is given of actions of the die and rotary the cutter according to the abovementioned first preferred embodiment. Sheet materials 12 fed one by one from the sheet supplying device (not illustrated) are horizontally fed

17 1 1 between the die cylinder 20 and the anvil cylinder 24 via the feed rolls 28, 28. At this time, the feeding state of the sheet materials 12 is, as shown in FIG. 1, such that the long side (front edge) 12a of the sheet materials is indined an indination angle 1 with respect to the reference line L2.

A sheet material 12 horizontally fed in an inclined state between both the cylinders 20, 24 driven and rotated in the direction opposite each other by the abovementioned outside drive source is put between the abovementioned the cutting blade 54 and the anvil 22 and is sent to the downstream side. In this process, a die cutting of an appointed shape is applied onto the sheet materiaL As described above, since the lateral die cutting blade 54a in the abovementioned die 52 is inclined with an ande 0 1 with respect to the axial line L1 (reference line L2) of the die cylinder 20, on end in the lengthwise on of the lateral die cutting blade 54a. is brought into the sheet material 12 to commence a die cutting, and the lateral die cutting blade 54a. is gradually brought into contact with the sheet matenal 12 toward the other end m line with rotations of the die cylinder 20, whereby the die cutting is performed. Furthermore, since the sheet material 12 is inclined an indination angle - 0 1 with the respect to the reference line L2 and supplied m this state, the lateral die cutting line 26 punched by the lateral die cutting blade 54a becomes parallel to the long side 12a, (See FIG. 1). Furthermore, as regards the longitudinal die cutting blade 54b in the die 52, a longitudinal die cutting line 2 7 is applied onto the sheet material 12 in parallel to the short side 12b thereof by the longitudinal die cutting blade 54b being gradually brought mto contact with the sheet material. 12 from one end to the other end m the lengthwise direction m line with rotations of the die cylinder 20.

That is, since the lateral die cutting blade 54a for applying a lateral die cutting line 26 onto a sheet material 12 is gradually brought irito contact with the sheet material 12 without bring brought into contact with the sheet material at one time, no Luge s (impact load) is given to the die cylinder 20, anvil der 24 and the lateral die cutting blade 54a itself. Therefore, it is possible to lengthen the service of both the cylinders 20, 24 without increasing the mechanical strength of bearings, etc. of the cylinders, resulting in a down sizing and a decrease of the production cost. As regards the die 52, since it not nece to increase the thicAmess; of a curved boar 16 to increase the supporting strength of the lateral die cutting blade 54a, the weight of the die can be reduced, resulting in an easy handling ofthedie. Still flirthermore, since the respective perpendicular lines R1, R2 in the 18 lateral die cutting blade 54a and the longitudmal die cutting blade 54b are set so as to cross the axial line L l of the die der 20, the load added onto the lateral die cutting blade 54a and the longitudinal die cutting blade 54b can be received at the axial center of the die cylinder 20. Therefore, it is possible to prevent that vibrations produced by load being applied onto the die cylinder in the eccentric direction occur, whereby it is possible to simplify the supporting structure of the die cylinder 20.

Synchronously with a die cutting by the abovementioned die cutting blade 54, a lateral scoring 30 which is parallel to the lateral die cutting line 26 is performed by the lateral scoring blade 26, and at the same time a longitudinal scoring 32 which is parallel to the longitudinal die cutting line 27 is performed by the longitudinal scoring blade 58. At this time, since the lateral scoring blade 56 in the die 52 is gradually brought into contact with a sheet material 12 without being brought into contact with the sheet material 12 at its entire length at one time, the lateral scoring 30 is not strongly applied onto the sheet material 12, and it is possible to prevent a breakage due to the scoring. Furthermore, the longitudinal scoring blade 58 m the die 52 is gradually brought into the sheet material 12 from one end to the other end m the lengthwise dnwhon m line with rotations of the die cylmder 20. Still furthermore, the unpact load given to the lateral scoring blade 56 and longitudinal scoring blade 58 is a little, whereby the service of the corresponding blades 56 and 58 can be lengthened- Herein, since the lateral die cutting blade 54a of the die 52 is inclined an appointed degree of angle 0 1 with respect to the axial line L1 of the abovementioned die der 20, the lateral die cutting blade 54a will be engaged in the anvil 22 of the abovementioned anvil cylinder 24 m an inclined state with respect to the axial line Ll. Therefore, by shifting the anvil cylinder 24 in the axial direction thereof, the position at which the blade tip end of the lateral die cutting blade 54a is engaged in the anvil 22 can be changed. That is, it is possible to prevent a biased wearing resulting from engagement of the lateral die cutting blade 54a in the same place can be prevented to lengthen the service life of the anvil 22. Furthermore, since it is possible to prevent that only the same place of the anvil 22 is worn, and the anvil 22 may be uniformly worn, it is possible to prevent in advance a defective scoring from occurring, resulting from the unevenness of the surface of the anvil 22. Still furthermore, by the lateral die cutting blade 54a being inclined in the circumferential direction of the anvil 22 (that is, being positioned so as to be spiral), scales of the anvil 22 can be swept out /--\ 19 when the lateral die cutting blade 54a engaged in the anvil 22 is separated therefrom. Furthermore, since the longitudinal the cutting blade 54b of the die 52 is constructed so as to be inclined with respect to the sheet feeding direction P, it is possible to prevent a biased wearing of the anvil 22 as in a case of the lateral die cutting blade 54a and possible to sweep out the scales of the anvil 22.

Furthermore, the lateral and longitudinal die cutting blades 54a, 54b and lateral and longitudinal scoring blades 56,58, which are planted in the abovementioned die 52 are not limited to a simple shape as shown in FIG. 1. They may be formed in compliance with various types of blanks die cut from a sheet material 12. For example, as shown in FIG. 15(a) and (b), in a case where various types of blanks are die cut from sheet materials 12, the respective die cutting blades 54a, 54b and the respective scoring blades 56, 58 are planted in a curved board 16 under the abovementioned conditions in compliance with the shape forming positions of the respective lateral die cuttmg lines 26 parallel to the long side (front edge) 12a of the sheet material, the respective longitudinal the cutting lines 27 parallel to the short side (side edge) 12b, the respective lateral scoring lines 30 parallel to the long side (front edge) 12a and the respective longitudinal scoring lines 32 parallel to the short side (side edge) 12b.

(Second preferred embodiment) FIG. 10 roughly shows the construction of a rotary die cutter according to a second preferred embodiment, the basic construction of which is the same as the first preferred embodiment. However, there are Merent from each other m that, although in the first preferred embodiment the long side 12a of a sheet of material. 12 fed between the die cylinder 20 and the anvil cylinder 24 is inclined an appointed degree of angle with the reference line 12, the sheet material 12 is supplied therebetween with its long side (front edge) 12a parallel to the reference line L2 in the second preferred embodiment. Therefore, resulting from the point that the feeding state of the sheet material is diffierent, a description is given of only the parts of the second preferred embodiment which are difierent from the rotary the cutter according to the first preferred embodiment.

That is, as shown in FIG. 10, a rotary die cutter M according to the second preferred embodiment is provided with a die cylinder 20 and an anvil cylinder 24 which are rotatably disposed between a pair of frames spaced from each other in the direction of crossing the sheet feeding direction P, in a state where they are positioned above and below the pass line of the sheet material 12 and their axial lines L1 are parallel to each other, wherein the die cylinder is detachably attached to the die having a die cutting blade 14 of an appointed shape planted in a curved board 16, and the anvil der has an anvil 22, made of urethane material, attached thereonto for receiving the blade tip end of the abovementioned die cutting blade 14 in an engaged state.

The planes of the abovementioned pair of frames 10, 10 opposite each other are inclined an appointed degree of angle in parallel to each other with respect to the sheet feeding direction P and the axial lines L of both the ders 20,24 disposed between both the frames 10, 10 are set so as to be inclined an appointed degree of angle 0 2 with respect to the reference line L2 (See FIG. 11). Furthermore, the inclination angle 0 2 of the die cylinder 20 and anvil cylinder 24 is favorably set between 2' and 7'. The curved board 16 of the abovementioned die 18 is positioned on the die cylinder 20 so that it is curved to be arcuate with the inner diameter thereof being almost the same as that of the outer circumference of the die cylinder 20 and the reference line L3 parallel to the edge part crossing the curving direction thereof becomes parallel to the axial line L1 of the die cylinder (See FIG. 12). Furthermore, as shown in FIG. 11, a lateral die cutting blade 14a of the die cutting blade 14 planted in the curved board 16, which applies a lateral die cutting line 26 parallel to the abovementioned reference line L2 Oong side 12a) onto the sheet material 12 is disposed so as to be inclined at almost the same degree of angle 02 as the inclination angle 0 2 with the reference line L2 of the axial line L1 in the die cylinder 20 with respect to the reference line L3 of the curved board 16 in the same direction. And with the curved board 16 attached onto the die cylinder 20 so that the reference line L3 becomes the axial line L 1, the lateral die cutting blade 14a is inclined almost two times (0 2 + 02) the abovementioned inclination angle 0 2 with respect to the abovementioned reference line L2 as shown in FIG. 12.

That is, since the axial lines L1 of the die cylinder 20 and anvil der 24 are inclined and disposed with respect to the sheet feeding direction P and the lateral die cutting blade 14a in the die 18 attached to the die cylinder 20 is inclined and disposed in the same direction, a die cutting is applied onto the sheet material 12 which is horizontally fed between both the cylinders 20, 24 in its reference status by f 21 the corresponding lateral die cutting blade 14a being gradually brought into contact with the sheet material 12 from one end side to the other end side in the lengthwise direction. Thereby, it is possible to prevent that a large force is added to both the cylinders 20, 24 and the lateral die cutting blade 14a itself by the lateral die cutting blade 14a being brought into contact with the sheet material 12 at its entire length at one time.

Furthermore, the relationship between the die cylinder 20 and the lateral die cutting blade 14a is set so that, as in the first preferred embodiment, the lateral die cutting blade 14a is positioned to be spiral and the respective perpendicular lines R l cross the axial line L1 of the die Minder 20. Furthermore, the longitudinal die cutting blade 14b, of the die cutting blade 14 planted in the abovementioned curved board 16, for applying a longitudinal die cutting line 27 (line parallel to the short side 12) parallel to the abovementioned sheet feeding direction P onto the sheet material 12 is, as shown in FIG. 12, set so that the same becomes parallel to the sheet feeding direction P with the curved board 16 attached to the die cylinder 20. And the relationship between the longitudinal die cutting blade 14b and the die der 20 is set so that as in the first preferred embodiment, the longitudinal die cutting blade 14b is positioned to be spiral and the respective perpendicular lines R2 cross the axial lineLl of the diecylinder20. However, the longitudinal die cutting blade 14b is constructed so as to cross the lateral die cutting blade 14a at an angle of 90' 0 2 (in FIG. 11, the crossing angle of the left upper side and the right lower side is 90 + 02, and the crossing angle between the left lower side and the right upper side is 90 02).

Furthermore, m the abovementioned curved board 16, a lateral scoring blade 34 for applying a lateral scoring line 30 parallel to the lateral die cutting line 26 onto a sheet material 12 is disposed in parallel to the lateral die cutting blade 14a and. a longitudinal scoring blade 14b for applying a longitudinal scoring line 36 parallel to the longitudinal die cutting line 27 is disposed in parallel to the longitudinal die cutting line 27 onto the sheet material 12. The conditions of planting the lateral scoring blade 34 and longitudinal scoring blade in the curved board 16 are the same as those of the lateral die cutting blade 14 and longitudinal die cutting blade 14b. Furthermore, the shapes of the lateral and longitudinal die cutting blades 14a, 14b, and lateral scoring blades 34, 36 planted in the abovementioned die 14 may be formed m compliance with various types of blanks shown in FIG. 15(a) and (b) as in the first 1 1 22 preferred embodiment, and they can be created by planting the respective die cutting blades 14a, 14b and the respective scoring blades 34, 36 in the curved board 16 under the conditions de-- above.

(Actions of the second preferred embodiment) Next, a description is given of the actions of the die and rotary die cutter accordixig to the second preferred embodiment described above. Sheet materials 12 horizontally fed one by one between the the cylinder 20 and the anvil cylinder 24 via the abovementioned feed rolls 28, 28 have, as shown in FIG. 1, their long sides 12a, parallel to the reference line L2 and their short sides 12b parallel to the sheet feeding direction P. In other words, sheet materials 12 are supplied in a state where the position of forming a lateral die cutting line 26 to be applied onto the sheet 12 (illustrated with an alternate long and two-dashed line in FIG. 10) becomes parallel to the reference line W.

A sheet material 12 horizontally fed in its reference state between both cylinders driven and rotated m the direction opposite each other by the abovementioned outside drive source is put between the abovementioned die cutting blade 14 and the anvil 22 and is sent to the downstream side. In this process, a die cutting of an appointed shape is applied onto the corresponding sheet material 12. That is, as regards the lateral die cutting blade 14a in the abovementioned die 18, a die cutting is commenced by one end of the con"onding die cutting blade 14a in the lengthwise direction being brought into contact with the sheet material 12, and the die cutting is completed by the lateral die cutting blade 14a being gradually brought into contact with the sheet material 12 toward the other end in line with rotations of thedieder20. As described above, by further ineffining the lateral die cutting blade 14a of the die 18 attached to the die cylinder 20 only an angle 0 Twith respect to the die cylinder 20 disposed and inclined an angle 0 2 with respect to the reference line L2 in the same on, the lateral die cutting line 26 die cut by the corresponding lateral die cutting blade 14a becomes parallel to the reference line L2 (long side 12a) as shown in FIG. 13. Furthermore, since the longitudinal die cutting blade 14b in the die 18 is gradually brought into contact with the sheet material 12 from one end toward the other end in the lengthwise direction in the die 18 m line rotation of the die cylinder 20, a longitudinal die cutting line 27 parallel to the sheet feeding direction P is die cut m the corresponding material 12.

23 That is, since a lateral die cutting blade 14a for applying a lateral die cutting line 26 onto a sheet material 12 is gradually brought into contact with the sheet material 12 without being brought into contact with the same at the entire length at one timeno large stress (impact force) is exerted on the die cylinder 20, anvil cylinder 24 and the lateral die cutting blade 14a itseX. Therefore, the service of the bearings, etc. of both cylinders 20, 24 can be lengthened without increasing the mechanical strength th resulting in a down sizing and a decrease of the production cost.

Furthermore, since it is not necessary to increase the thidmess of the curved board 16 m order to increase the supporting strength of the lateral die cutting blade 14a, the weight of the die 18 can be reduced, resulting in an easy handling thereof.

As regards a scoring onto the sheet material 12, which is carried outsynchronously with the abovementioned die cutting, since the lateral sconng blade 34 in the abovementioned die 18 is gradually brought into contact with the sheet material 12 without being brought into contact with the sheet material 12 at its entire length at one time, a lateral scoring 30 can be applied onto the sheet material 12, and it is possible to prevent a breakage due to its scoring. Furthermore, since the longitudinal scoring blade 36 in the die 18 is gradually brought into contact with the sheet material 12 from one end toward the other end in the lengthwise direction in line with rotations of the die cylinder 20, a longitudinal scoring parallel to the sheet feeding direction P is applied onto the corresponding sheet material 12.

Accordingly, since the lateral die cutting blade 14a and longitudinal die cutting blade 14b are positioned to be spiral with respect to the abovementioned die cylinder 20, it is possible to prevent a biased wearing of the anvil 22 by shifting the anvil cylinder 24 in the axial direction, and the service life of the anvil 22 can be lengthened. Furthermore, it is possible to prevent in advance a defective scoring resulting from unevenness of the surface of the anv4 and at the same time scales of the anvil 22 can be swept away. This is the same as in the first preferred embodiment.

FIG. 14 is a rough construction view in which a rotary die cutter M2 according to the second preferred embodiment is employed in a printer die cutter which is typical of corrugated cardboard processing equipment. The processing equipment is f 24 constructed so that a plurality of printer units 42 which carry out appointed printing on a sheet material 12 is disposed at the downstream side in the sheet feeding direction of a sheet feeding device 40 which delivers and supplies sheet materials 12 one by one and a rotary die cutter M according to the second preferred embodiment which die-cuts the multi-color printed sheet materials is disposed at the downstream side of the printer units 42. Furthermore, in the processing equipment, in order to print and die cut sheet-like materials, it is necessary to align the reference points respectively set for the abovementioned printer vunts 42 and rotary die cutter M2 with each other. Therefore, a register device (not illustrated) is provided therefor.

That is, with the reference points of the printer units 42 and rotary die cutter M2 positioned by the abovementioned register device, sheet materials 12 sent out one by one toward the printer units 42 at an appointed timing by the sheet feeding device are printed to appointed patterns and characters at the predetermined position by the printed umts 42, and thereafter are horizontally supplied to the rotary die cutter M2, wherein the parts corresponding to the position where the printing was performed on the sheet material 12 are die-cut by the rotary die cutter M2.

In order to prevent a large stress from bemg exerted when &e-cuttmg by the lateral die cutting blade 14a, although the die cylinder 20 and the corresponding lateral die cutting blade 14a are inclined with respect to the reference line L2 in the rotary die cutter M according to the second preferred embodiment, the sheet materials 12 may be supplied in its reference state in which sheet materials are generally supplied. Therefore, m a case where the rotary die cutter M2 is employed in a printed die cuttex, it is not necessary to give any modification to the abovementioned sheet supplying device 40 and printer units 42.

Furthermore, as a means for horizontally feeding sheet materials 12 into the rotary die cutter M2, an air chamber 44 and a feed roll 46, which are disposed above and below the pass line may be employed instead of the abovementioned feed rolls 28, 28 as shown in FIG. 14, wherein by using the air chamber 44, the sheet materials 12 can be supplied with its state accurately retained.

(Modification examples) The invention is not limited to the abovementioned preferred embodiments.

Various variations and may be employed. For example, it is possible to employ a rotary die cutter according to the first preferred embodiment in a printer die cutter. However, m this construction, it is necessary to place master printing plates of the respective printer units in an indined state in compliance with the inclination of sheet materials. Furthermore, m each of the abovementioned preferred embodiments, a description was given of a case where a che equipped with che cuttng blades and scoring blades is attached onto the die cylinder. However, by attaching a die equipped with a die cutting blade and a die equipped with a scoring blade in Merent cylinders disposed m series m the sheet feedmg direction, che cuttmg and scoring may be separately applied onto the sheet materials.

26

Claims

WHAT IS CIAIMED IS:

1. A die comprising a curved board (16) detachably attached to a die cylinder (20) and die cutting blades (14,54) planted in said curved board (16) in order to perform an appomted die cutting on a sheet-like material (12), wherein lateral die cutting blades (14a,54a), of the abovementioned die cutting blades (14,54), for applying a lateral die cutting line (26) extending in parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12) is planted so that it is spiral on said curbed board (16) and the perpendicular line (R 1) extending from the blade tip end (KT 1) to the blade root fflE 1) at any optional position in the extending direction thereof crosses the axial line (L1) of said die cylinder (20), and longitudinal die cutting blades (14b,54b), of said die cutting blades (14,54), for applying a longitudinal die cutting line (27) extending in parallel to the side edge (12b) of said sheet material (12) onto said sheet material (12) is planted so that the same is spiral on said curved board (16) and the perpendicular line (R2) extending from the blade tip end OM) to the blade root (EE2) at any optional position in the extending direction thereof crosses the axial line (L1) of said die cylinder.

2. A die comprising a curved board (16) detachably attached onto a die cylinder (20) disposed so as to cross the feeding direction (P) of a sheet-like material (12) and a die cutting blade (54) planted in said curved board (16), wherein a lateral die cutting blade (54a) for applying a lateral die cutting line (26) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R 1) extending from the blade tip end (KT 1) to the blade root (KE 1) at each position in the extending direction in the lateral die cutting blade (54a) crosses the axial line (L 1) of the die cylinder (20), and a longitudinal die cutting blade (54b) for applying a longitudinal die cutting line (27) of an appointed length crossing the feeding on (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end aM) to the blade root (KE2) at each position in the extending direction in said longitudinal die cutting blade (54b) crosses the axial line (L 1) of the die ffiffider (20).

27

3. A die comprising a curved board (16) detachably attached to a die cylinder (20) disposed so as to cross he the feeding direction (P) of a sheet-like material (12) and a die cutting blade (14) planted in said curved board (16), wherein a lateral die cutting blade (14a) a lateral die cutting line (26) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R 1) extending from the blade tip end (M) to the blade root (KE 1) at each position in the extending direction in the lateral die cutting blade (14a) crosses the axial line (L 1) of the die cylinder (20), and a longitudinal die cutting blade (14b) for applying a longitudinal die cutting line (27) of an appointed length parallel to the feeding d=tion (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end QM) to the blade root (KE2) at each position in the extending direction in said longitudinal die cutting blade (14b) crosses the axial line (L1) of the die cylinder (20).

4. The die as set forth in any one of dlaims; 1 to 3, wherein the point (m) of intersection between the perpendicuLar line (R2) at one end m the lengthwise direction in said longitudinal die cutting blades (14b,54b) and the axial line (L1) of the die cylinder and the point (n) of intersection between the perpendicular line (R2) at the other end m the lengthwise direction in the longitudinal die cutting blades (14b,54b) and the axial line (L1) of the die cylinder (20) are spaced an appointed distance from each other in the axial direction.

5. A die comprising a curved board (16) and scoring blades (34,36,56,58) planted m said curved board (16) in order to apply appointed scoring lines onto a sheet-like material (12), wherein lateral scoring blades (34, 56), of said scoring blades (34,36,56,58), for applying a scoring line (30) extending in parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12) are planted so that they are spiral on said curved board (16) and the perpendicular line (R 1) extending from the blade tip end (LT 1) to the blade root (LE 1) at any optional position in the extending line thereof crosses the axial line (L1) of said die cylinder (20), and longitudinal scoring blades (36,58), of said scoring blades (34,36,56,58), for applying a scoring line (32) extending /1- 28 in parallel to the side edge (12b) of said sheet material (12) are planted so that they are spiral on said curved board (16) and the perpendicuh-w line (R2) extending from the blade tip end (M) to the blade root a12) at any optional position m the extending direction thereof crosses the axial. line (L1) of said die cylinder (20).

6. A die comprising a curved board (16) detachably attached to a die cylinder (20) disposed so as to cross the feeding direction (P) of a sheet-hke material (12) and scoring blades (56,58) planted in said curved board, wherein a lateral scoring hne, (56) for applying a lateral scoring hne, (30) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board attached to the the cylinder (20), and the perpendicular line (R 1) extending from the blade tip end (LT 1) to the blade root (LE 1) at each position in the extending direction in the lateral scoring blade (56) crosses the axial line (L1) of the die der (20), and a longitudinal scoring line (58) for applying a longitudinal scoring line (32) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board attached to the die cylinder (20), and the perpendicular line (R2) extending from the blade tip end 0672) to the blade root (LE2) at each position in the extending direction in the longitudinal sconng blade (58) crosses the axial. line (L 1) of the die cylinder (20).

7. A die comprising a curved board (16) detachably attached to a die cylinder (20) disposed so as to cross the feeding direction (P) of a sheet-like material (12) and scoring blades (34,36) planted in said curved board, wherein a lateral scoring blade (34) for applying a lateral sconng line (30) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is position to be spiral with said curved board (16) attached to the die cylinder (20), and the perpendicuhar line (R1) extending from the blade tip end (LT1) to the blade root (LE1) at each position in the extending on in the lateral scoring blade (34) crosses the axial hne (L1) of the die cylinder (20), and a longitudinal scoring blade (36) for applying a longitudinal scoring line (32) of an appointed length parallel to the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said 29 curved board (16) attached to the die ffiffider (20) and the perpendicular line (R2) extending from the blade tip end (M) to the blade root (LE2) at each position in the extending direction of the longitudinal scoring blade (36) crosses the axial line (L1) of the die cylinder (20).

8. The die as setforthin anyone of claim 5 to 7, wherein thepoint (m) of inteon between the perpendicular line (R2) at one end in the lengthwise direction in said longitudinal scoring blades (36,58) and the axial line (L1) of the die cylinder (20) and the point (n) of intersection between the perpendicular line (R2) at the other end in the lengthwise direction in the longitudinal scoring blades (36,58) and the axial line (L1) of the die cylinder (20) are spaced an appointed length from each other in the axial direction.

9. A die comprising a curved board (16) detachably attached to a die cylinder (20) and die cutting blades (14,54) and scoring blades (34,36,54, 58) planted in said curved board (16), wherein lateral die cutting blades (14a, 54a), of said die cutting blades (14,54), for applying a lateral die cutting line (26) extending in parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12) is planted so that they are spiral on said curved board (16) and the perpendicular line (R1) extending from the blade tip end (KT 1) to the blade root (KE 1) at any optional position in the extending direction thereof crosses the axial line (L1) of said die der (20), longitudinal die cutting blades (14b,54b), of said die cutting blades (14,54), for applying a longitudinal die cutting line (27) extending in parallel to the side edge (12b) of said sheet material (12) are planted so that they are spiral on said curved board and the perpendicular line (R2) extending from the blade tip end QM) to the blade root (KE2) at any optional position in the extending direction thereof crosses the axial line (L1) of the said die cylinder (20), and longitudinal scoring blades (36,58), of said scoring blades (34, 36,54,58), for applying a longitudinal scoring line (32) extending in parallel to the side edge (12b) of said sheet material (12). are planted so that they are spiral on said curved board (16) and the perpendicular line (R2) extending from the blade tip end (L72) to the blade root (LE2) at any optional position m the extending direction thereof crosses the axial line (L1) of said die der (20).

10. A rotary die cutter comprisirig a die cylinder (20) driven and rotated m an 1,1 appointed direction, to which a die (52) having a die cutting blade (54) planted in a curved board (16) is detachably attached, and an anvil cylinder (24) driven and rotated in the direction opposite said die cylinder (20), which is disposed in parallel to said die cylmder (20), wherein a sheet-like material (12) is supplied between both cylinders (20, 24) in a state where the front edge (12a) thereof in the sheet feeding direction (P) cros an appointed degree of angle (- 0 1) the reference line (L2) orthogonal to said sheet feeding direction (P) and a die cutting of an appointed shape is applied onto said sheet material (12) via said die cutting blade (54), wherein said die (52) is provided with a lateral die cutting blade (54a) set so that the same is positioned to be spiral with said curved board (16) attached to the die der (20) and the perpendicular line (R1) extending from the blade tip end (M) to the blade root (KE 1) at each position in the extending direction thereof crosses the axial line (L1) of the die cylinder (20), and a longitudinal die cutting blade (54b) set so that the same is positioned to be spiral with the curved board (16) attached to the die der (20) and the perpendicular line (R2) extending from the blade tip end am) to the blade (IKE2) at each position in the extending direction thereof crosses the axial line (L1) of the die cylinder (20), wherein said die cylinder (20) is dLsposed so that the axial line (L1) becomes parallel to said reference line (L2), wherein said die (52) is attached to the die der (20) so that said lateral die cutting blade (54a) is inclined in the opposite on at almost the same degree of angle (0 1) as the indination angle (- 0 1) between the front edge (12a) of said sheet material (12) and the re&rence line (12) with respect to the axial line (L 1) of the die cylinder (20), and so that said longitudinal die cutting blade (54b) is inclined at the same degree of angle as the inclination (0 1) of the lateral die cutting blade (54a) to the axial line (L1) with respect to the sheet feeding direction (P), and wherein a lateral die cutting line (26) crossing the reference line (12) is applied by said lateral die cutting blade (54a) onto the sheet material (12) supplied between said die der (20) and said anvil cylinder (24) in an inclined state, and at the same time a longitudinal die cutting line (27) crossing the sheet feeding direction (P) is applied thereonto by said longitudinal die cutting blade (54b).

11. A rotary die cutter comprisirig a die ffimder (20) driven and rotated m an appointed direction, to which a die (52) having a die cutting blade (54) planted in a curved board (16) is detachably attached, and an anvil cylinder (24) disposed in parallel to the die der (20) and driven and rotated in the opposite direction of said 31 die cylinder (20), wherein a sheet-like material (12) formed to be rectangular supplied between both the cylinders (20,24) in an inclined state where the front edge (12a) in the sheet feeding direction (P) thereof crosses the reference line (L2) orthogonal to said feeding on (P) at an appointed degree of angle (- 0 1) and a die cutting of an appointed shape is applied by said die cutting blade (54) onto said sheet material (12), wherein said die (52) is provided with a lateral die cutting blade (54a) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R1) extending from the blade tip end (M) to the blade root (KE 1) at each position in the extending direction thereof crosses the axial line (L1) of the die cylinder (20), said lateral die cutting blade (54a) being for applying a lateral die cutting line (26) parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12), and a longitudinal die cutting blade (54b) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end QM) to the blade root (KE2) at each position in the extending direction thereof crosses the axial line (L 1) of the die cylinder (20), said longitudinal die cutting line (54b) being for applying a longitudinal die cutting line (27) parallel to the side edge (12b) orthogonal to the front edge (12a) of the said sheet material (12) onto said sheet material (12), wherein said die ffiffider is disposed so that the axial line (L1) thereof becomes parallel to said reference line (L2), wherein said die (52) is attached to the die cylinder (20) so that said lateral die cutting blade (54a) is inclined in the opposite direction at almost the same degree of angle (0 1) as the inclination angle (- 0 1) between the front edge (12a) of said sheet material (12) and the reference line (L2) with respect to the axial line (L1) of the die cylinder (20), and said longitudinal die cutting blade (54b) is inclined at the same degree of angle as the inclination angle (0 1) to the axial. line (L1) of the lateral die cutting blade (54b) with respect to the sheet feeding direction (P), and wherein a lateral die cutting line (26) parallel to the front edge (12a) is applied by said lateral die cutting blade (54a) onto a sheet material (12) supplied between said die cylinder (20) and anvil cylinder (24) in an inclined state, and a longitudinal die cutting line (27) parallel to the side edge (12b) is applied thereon by said longitudinal die cutting blade (54b).

12. A rotary die cutter comprising a die cylinder (20) driven and rotated m an appointed direction, to which a die (18) having a die cutting blade (14) planted in a 32 curved board (16) is detachably attached, and an anvil cylinder (24) disposed in parallel to the die cylinder (20) and driven and rotated in the opposite direction of said die cylinder (20), wherein a sheet-like material (12) is supplied between both the cylinders (20,24) in the reference state where the front edge (12a) in the sheet feeding direction (P) is orthogonal to said sheet feeding direction (P) and a die cutting of an appointed shape is applied by said die cutting blade (14) onto said sheet material (12), wherein said die (14) is provided with a lateral die cutting blade (14a) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R1) extending from the blade tip end (M) to the blade root (KE 1) at each position in the extending direction thereof crosses the axial direction CL1) of the die cylinder (20) and a longitudinal die cutting blade (14b) set so that the same is positioned to be spiral with the curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end QM) to the blade fflE2) at each position in the extending direction th wherein said che cyhnder is disposed so that the axial line CL 1) thereof is ineffined only an appointed degree of angle (0 2) with respect to said reference line (L2), wherein said die (16) is attached to the die cylinder (20) so that said lateral die cutting blade (14a) is inclined at almost the same degree of angle as the inclination angle (0 2) between said axial line (L1) and the reference line (L2) with respect to the axW line (L1) of the die cylmder (20) and said longitudinal die cutting blade (14b) becomes parallel to the sheet feeding direction (P), and wherein a lateral die cutting line (26) parallel to the reference line (L2) is applied by said lateral die cutting blade (14a) onto the sheet material (12) supplied between said die cylinder (20) and anvil cylinder (24) in its reference state, and a longitudinal die cutting line (27) parallel to the sheet feeding on (P) is applied thereonto by said longitudinal die cutting blade (14b).

13. The rotary die cutter as set forth in any one of claims 10 to 12, wherein said dies (18,52) are provided with lateral scoring blades (34, 56), parallel to said lateral die cutting blades (14a,54a), set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R1) extending from the blade tip end (LT 1) to the blade (LE 1) at each position in the extending direction thereof crosses the axial line (L1) of the die cylinder (20), and longitudinal swring blades (36,58), parallel to said longitudinal die cutting blades (14b,54b), set so that the same is positioned to spiral with said curved board (16) 33 attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end (M) to the blade root (LE2) at each position in the extending direction thereof crosses the axial line (L 1) of the die cylinder (20), and wherein a lateral scoring line (30) parallel to the lateral die cutting line (26) is formed m said sheet material (12) by said lateral swring blades (34,56), and a longitudinal scoring line (32) parallel to the longitudinal die cutting line (27) is formed thereon by said longitudinal sconng blades (36,58).

14. A rotary die cutter comprising a die cylinder (20) driven and rotated m an appointed direction, to which a die (18) having a die cutting blade (14) planted in a curved board (16) is detachably attached, and an anvil cylinder (24) disposed in parallel to the die cylinder (20) and driven and rotated in the opposite direction of said die cylinder (20), wherein a sheet-like material (12) is supplied between both the cylinders (20,24) in the reference state where the front edge (12a) in the sheet feeding direction (P) is orthogonal to said sheet feeding direction (P) and a die cutting of an appointed shape is applied by said die cutting blade (14) onto said sheet material (12), wherein said die cylinder (20) is disposed so that the axial line (L1) thereof is inclined only an appointed degree of angle (0 2) with respect to said reference line (L2), wherein the die (18) is attached to said die cylinder (20) so that a lateral die cutting blade (14a), of the die cutting blade (14), for applying a lateral die cutting line (14a) of an appointed length parallel to said reference line (12) onto the sheet material (12) is inclined at almost the same degree of angle (0 2) as the indin angle (0 2) between said axial line 0,1) and the reference line (12) with respect to the axial line (L1) of the die cylinder (20) in the same on, and wherein a lateral die cutting line (26) parallel to the reference line (L2) is applied by said lateral die cutting blade (14a) onto the sheet material (12) supplied between said die cylinder (20) and anvil cylinder (24) in its reference state.

15. Ihe rotary die cutter as set forth m claim 14, wherein, the longitudinal die cutting blade (14b), of the die cutting blade (14), for applying a longitudinal die cutting line (27) of an appointed length parallel to the sheet feeding direction (P) onto the sheet material (12) is set so as to become parallel to the sheet feeding direction (P) with the die (18) attached to the die cylinder (20).

16. A die substantially as hereinbefore described with reference to the 34 accompanying drawings.

17. A rotary the cutter substantially as herembefore desanbed with reference to the accompanying drawings.

17. A rotary the cutter substantially as herembefore descnbed with reference to the accompanying drawings.

IS Amenciments to the claims have been f as follows 1. A die comprising a curved board (16) detachably attached to a die cylinder (20) and die cutting blades (14,54) planted in said curved board (16) in order to perform an appointed die cutting on a sheet-like material (12), wherein lateral die cutting blades (14a,54a), of the abovementioned die cutting blades (14,54), for applying a lateral die cutting line (26) extending in parallel to the front edge (12a) of said sheetmaterial (12) onto said sheet material (12) is planted so that it is!spiral on said curved board (16) and the perpendicular line (R1) extending from the blade tip end (M) to the blade root fflE1) at any optional position in the extending direction thereof crosses the axial line JA) of said die cylinder (20), and longitudinal die cutting blades (14b,54b), of said die cutting blades (14,54), for applying a longitudinal die cutting line (27) extending in parallel to the side edge (12b) of said sheet material (12) onto said sheet material (12) is planted so that the same is spiral on said curved board (16) and the perpendicular line (R2) extending from the blade tip end QM) to the blade root (KE2) at any optional position in the extending direction thereof crosses the a.-dal line (L 1) of said die cylinder.

2. A die comprising a curved board (16) detachably attached onto a die cylinder (20) disposed so as to cross the feeding direction (P) of a sheet-like material (12) and a die cutting blade (54) planted in said curved board (16), wherein a lateral die cutting blade (54a) for applying a lateral die cutting line (26) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die der (20) and the perpendicular line (R 1) extending from the blade tip end (M) to the blade root (KE 1) at each position in the extending direction in the lateral die cutting blade (54a) crosses the axial. line (L1) of the die cylinder (20), and a longitudinal die cutting blade (54b) for applying a longitudinal die cutting line (27) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending fiom the blade tip end QM) to the blade root (KE2) at each position in the extending direction in said longitudinal die cutting blade (54b) crosses the wdal line (L1) of the die cylinder (20).

3. A die comprising a curved board (16) detachably attached-to a die cylinder (20) disposed so as to cross the feeding direction (P) of a sheet-like material (12) and a die cutting blade (14) planted in said curved board (16), wherein a lateral die cutting blade (14a) a lateral die cutting line (26) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R 1) extending from the blade tipend (KT 1) to the blade root (KE 1) at each position in the extending direction in the lateral die cutting blade (14a) crosses the axial. line (L1) of the die cylinder (20), and a longitudinal die cutting blade (14b) for applying a longitudinal the cutting line (27) of an appointed length parallel to the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end QM) to the blade root (KE2) at each position in the extending direction in said longitudinal die cutting blade (14b) crosses the axial line (L 1) of the die cylinder (20).

4. The die as set forth in any one of claims 1 to 3, wherein the point (m) of intersection between the perpendicular line (R2) at one end in the lengthwise direction in said longitudinal die cutting blades (14b,54b) and the a)dal line (L1) of the die Minder and the point (n) of intersection between the perpendicular line (R2) at the other end in the lengthwise direction m the longitudinal die cutting blades (14b,54b) and the axial line (L1) of the die cylinder (20) are spaced an appointed distance fmm each other in the axial direction.

5. A die comprising a curved board (16) detachably attached to a die cylinder (20) and scoring blades (34,36,56,58) planted in said curved board (16) in order to apply appointed scoring lines onto a sheet-like material (12), wherein lateral scoring blades (34,56), of said scoring blades (34,36,56,58), for applying a scoring line (30) extending in parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12) are planted so that they are spiral on said curved board (16) and the perpendicular line (R 1) extending from the blade tip end (LT1) to the blade root (LE 1) at any optional position in the extending line thereof crosses the axial line (L1) of said die cylinder (20), and longitudinal scoring blades (36,58), of said scoring blades (34, 36,56,58), for applying a scoring line (32) extending in parallel to the side edge (12b) of said sheet material (12) are planted so that they are spiral on said curved board (16) and the perpendicular line (R2) extending from the blade tip end (LT2) to the blade root (LE2) at any optional position in the extending direction thereof crosses the axial line (L1) of said die cylinder (20).

6. A die comprising a curved board (16) detachably attached to a die cyli ' nder (20) disposed so as to cross the feeding direction (p) of a sheetlike material (12) and scoring blades (56,58);lanted in said curved board, wherein a lateral scoring blade (56) for applying a lateral scoring line (30) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board attached to the die cylinder (20), and the perpendicular line (R1) extending from the blade tip end (LT1) o the blade root (LE1) at each position in the extending direction in the lateral scoring blade (56) crosses the axial line (L1) of the die cylinder (20), and a longitudinal scoring blade (58) for applying a longitudinal scoring line (32) of an appointed length crossing the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board attached to the die cylinder (20), and the perpendicular line (R2) extending from the blade tip end (LT2) to the blade root (LE2) at eachposition in the extending direction in the longitudinal scoring blade (58) corsses the axial line (L1) of the die cylinder (20).

7. A die comprising a curved board (16) detachably attached to a die cylinder (20) disposed so as to cross the feeding direction (P) of a sheet-like material (12) and scoring blades (34,36) planted in said curved board, wherein a lateral scoring blade (34) for applying a lateral scoring line (30) of an appointed length crossing the feeding direction (P) of said sheet material (U) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20), and the perpendicular line (R1) extending from the blade tip end (LT1) to the blade root (LEI) at each position in the extending direction in the lateral scoring blade (34) crosses the axial line (L1) of the die cylinder (20), and a longitudinal scoring blade (36) for applying a longitudinal scoring line (32) of an appointed length parallel to the feeding direction (P) of said sheet material (12) onto said sheet material (12) is set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end (LT2) to the blade root (LE2) at each position in the extending direction of the longitudinal scoring blade (36) crosses the axial line (L1) of the die cylinder (20).

8. The die as set forth in any one of Claims 5 to 7, wherein the point (m) of intersection between the perpendicular line (R2) at one end in the lengthwise direction in said longitudinal scoring blades (36,58) and the axial line (L1) of the die cylinder (20) and the point (n) of intersection between the perpendicular line (R2) at the other end in the lengthwise direction in the longitudinal scoring blades (36,58) and the axial line (L1) of the die cylinder (20) are spaced an appointed length from each other in the axial direction.

9. A die comprising a curved board (16) detachably attached to a die cylinder (20) and die cutting blades (14,54) and scoring blades (34,36,54, 58) planted in said curved board (16), wherein lateral die cutting blades (14a,54a), of said die cutting blades (14,54), for applying a lateral die cutting line (26) extending in parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12) is planted so that they are spiral on said curved board (16) and the perpendicular line (R1) extending from the blade tip end (KT1) to the blade root (KE1) at any optional position in the extending direction thereof crosses the axial line (L1) of said die cylinder (20), and longitudinal die cutting blades (14b,54b), of said die cutting blades (14, 54), for applying a longitudinal die cutting line (27) extending in parallel to the side edge (12b) of said sheet material (12) are planted so that they are spiral on said curved board and 2 - the perpendicular line (R2) extending from the blade tip end (KT2) to the blade root (KE2) at any optional position in the extending direction thereof crosses the axial line (L1) of the said die cylinder (20), lateral scoring blades (34,56), of said scoring blades (34,36,56,58) for applying a lateral scoring line (30) extending in parallel to the f ront edge (12a) of said sheet material (12) are planted so that they are spiral on said curved board (16) and the perpendicular line (R1) extending from the blade tip end (LT1) to the blade root (LE1) at any op7ional position in the extending direction thereof crosses the axial line (L1) of said die cylinder (20), and longitudinal scoring blades (36, 58) of said scoring blades (34,36,56,58), for applying a longitudinal scoring line (32) extending in parallel to the side edge (12b) of L0.

said sheet material (12) are planted so that they are spiral on said curved board (16) and the perpendicular line (R2) extending fxom the blade tip end (M) to the blade root (LE2) at any optional position in the extending direction thereof crosses the axial line (L1) of said die cylinder (20).

10. A rotary die cutter comprising a die cylinder (20) driven and rotated m an appointed direction, to which a die (52) having a die cutting blade (54) planted in a curved board (16) is detachably attached, and an anvil cylinder (24) driven and rotated m the direction opposite said die cylinder (20), which is disposed m parallel to said die cylinder (20), wherein a sheet-like material (12) is supplied between both cylinders (20, 24) i n an i ncl i ned state where the front edge (12a) thereof in the sheet feeding direction. (P) crosses an appomted degree of angle (- 0 1) the reference line (L2) orthogonal to said sheet feeding direction (P) and a die cutting of an appointed shape is applied onto said sheet material (12) via said die cutting blade (54), wherein said die (52) is provide. d with a lateral die cutting blade (54a) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R1) extending from the blade tip end (M) to the blade root (KE1) at each position in the extending direction thereof crosses the axial line JA) of the die cylinder (20), and a longitudinal die cutting blade (54b) set so that the same is positioned to be spiral with the curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end aM) to the blade (KE2) at each position in the extending direction thereof crosses the axial line CL1) of the die cylinder (20), wherein said die cylinder (20) is disposed so that the axial line (L1) becomes parallel to said reference line (L2), wherein said die (52) is attached to the the cylinder (20) so that said lateral die cutting blade (54a) is inclined in the opposite direction at almost the same degree of angle (0 1) as the in clinaflon angle (- 0 1) between the front edge (12a) of said sheet material (12) and the reference line (L2) with respect to the axial line (L1) of the die cylinder (20), and so that said longitudinal die cutting blade (54b) is inclined at the same degree of angle as the inclination (0 1) of the lateral die cutting blade (54a) to the axial line (L1) with respect to the sheet feeding direction (P), and wherein a lateral die cutting line (26) crossing the reference line (L2) is applied by said lateral die cutting blade (54a) onto the sheet material (12) supplied between said die cylinder (20) and said anvil cylinder (24) in an inclined state, and at the same time a longitudinal die cutting line (27) crossing the sheet feeding direction Lb-1 ' (P) is applied thereonto by said longitudinal die cutting blade (54b).

11. A rotary die cutter comprising a die cylinder (20) driven and rotated in an appointed direction, to which a die (52) having a die cutting blade (54) planted in a curved board (16) is detachably attached, and an anvil cylinder (24) disposed in parallel to the die cylinder (20) and driven and rotated in the opposite direction of said die cylinder (20), wherein a sheet-like material (12) formed to be rectangular supplied betWeen both the cylinders (20,24) in an inclined state where the front edge (12a) in the sheet feeding direction (P) thereof crosses the reference line a2) orthogonal to said feeding don (P) at an appointed degree of angle (- 0 1) and a die cutting of an appointed shape is applied by said die cutting blade (54) onto said sheet material (12), wherein said die (52) is provided with a lateral die cutting blade (54a) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R1) extending from the blade tip end (M) to the blade root (KE 1) at each position in. the extending direction thereof crosses the axial line (L1) of the die cylinder (20), said lateral die cutting blade (54a) being for applying a lateral die cutting line (26) parallel to the front edge (12a) of said sheet material (12) onto said sheet material (12), and a longitudinal die cutting blade (54b) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end aM) to the blade root (KE2) at each position in the extending direction thereof crosses the axial line (L1) of the die der (20), said longitudinal die cutting line (54b) being for applying a longitudinal die cutting line (27) parallel to the side edge (12b) orthogonal to the front edge (12a) of the said sheet material (12) onto said sheet material. (12), wherein said die cylinder is disposed so that the axial line (L1) thereof becomes parallel to said reference line (L2), wherein said die (52) is attached to the die cylinder (20) so that said lateral die cutting blade (54a) is inclined in the opposite direction at almost the same degree of angle (0 1) as the inclination angle (- 0 1) between the front edge (12a) of said sheet material (12) and the reference line (L2) with respect to the axial line (L1) of the die cylinder (20), and said longitudinal die cutting blade (54b) is inclined at the same degree of angle as the inclination angle (0 1) to the axial line (L1) of the lateral die cutting blade (54b) with respect to the sheet feeding direction (P), and wherein a lateral die cutting line (26) parallel to the front edge (12a) is applied by said lateral die cutting blade (54a) onto a sheet material (12) supplied between said L42. 1 die cylinder (20) and anvil cylinder (24) in an inclined state, and a longitudinal die cutting line (27) parallel to the side edge (12b) is applied thereon by said longitudinal die cutting blade (54b).

12. A rotary die cutter comprising a die cylinder (20) driven and rotated in an appointed direction, to which a die (18) having a die cutting blade (14) planted in a curved board (16) is detachably attached, and an anvil cylinder (24) disposed in parallel to the die cyhnder (20) and driven and rotated in the opposite direction of said die Minder (20), wherein a sheet-like material (12) is supplied between both the cylinders (20,24) in the reference state where the front edge (12a) in the sheet feeding direction (P) is orthogonal to said sheet feeding direction (P) and a die cutting of an appointed shape is applied by said die cutting blade (14) onto said sheet material (12), wherein said die (18) is provided with a lateral die cutting blade (14a.) set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R1) extending from the blade tip end (KT1) to the blade root (RE 1) at each position in the extending direction thereof crosses the axial direction (L1) of the die cylinder (20) and a longitudinal the cutting blade (14b) set so that the same is positioned to be spiral with the curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end RT2) to the blade root (KE2) at each position in the extending direction thereof, wherein said die cylinder (20) is disposed so that the axial line (L1) thereof is inclined only an appointed degree of angle (0 2) with respect to said reference line (U), wherein said die (18) is attached to the die cylinder (20) so that said lateral die cutting blade (14a) is inclined at almost the same degree of angle as the inclination angle (0 2) between said axial line (L1) and the reference line (L2) with respect to the axial line (L1) of the die cylinder (20) and said longitudinal die cutting blade (14b) becomes parallel to the sheet feeding direction (P), and wherein a lateral die cutting line (26) parallel to the reference line CL2) is applied by said lateral die cutting blade (14a) onto the sheet material (12) supplied between said die cylinder (20) and anvil cylinder (24) in its reference state, and a longitudinal die cutting line (27) parallel to the sheet feeding direction (P) is applied thereonto by said longitudinal die cutting blade (14b).

13. The rotary die cutter as set forth in any one of claims 10 to 12, wherein said dies (18,52) are provided with 1-ateral scoring blades (34, 56), parallel to said lateral die cutting blades (14a,54a), set so that the same is positioned to be spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R 1) extending from the blade tip end (LT1) to the blade root (LE1) at each position in the extending direction thereof crosses the a.-ial line (L1) of the die qlinder (20), and longitudinal scoring blades (36,58), parallel to said longitudinal die cutting blades (14b,54b), set so that the same is positioned to spiral with said curved board (16) attached to the die cylinder (20) and the perpendicular line (R2) extending from the blade tip end (L72) to the blade root (LE2) at ewh position in the extending direction thereof crosses the axial line (L1) of the die cylinder (20), and wherein a lateral scoring line (30) parallel to the lateral die cutting line (26) is formed on said sheet material (12) by said lateral scoring blades (34,56), and a longitudinal scoring line (32) parallel to the longitudinal die cutting line (2 7) is formed thereon by said longitudinal scoring blades (36,58).

14. A rotary die cutter comprising a die der (20) driven and rotated in an appointed on, to which a die (18) having a die cutting blade (14) planted in a curved board (16) is detachably attached, and an anvil der (24) disposed in parallel to the die cylinder (20) and driven and rotated m the opposite direction of said die qlinder (20), wherein a sheet-like material (12) is supplied between both the cylinders (20,24) in the reference state where the front edge (12a) in the sheet feeding direction (P) is orthogonal to said sheet feeding direction (P) and a die cutting of an appointed shape is applied by said die cutting blade (14) onto said sheet material (12), wherein said die cylinder (20) is disposed so that the axial line (L1) thereof is inclined only an appointed degree of angle (0 2) with respect to said reference line a2), wherein the die (18) is attached to said die der (20) so that a lateral die cuttingbIade (14a), of the die cuttinghlade (14), for.applying a lateral die cuLting line (26) of an appointed length parallel to said ref erence 1 i ne (L2) xto the st)eet material (12) is inclined at almost the same degree of angle (0 2) as the inclination angle (0 2) between said axial line (L 1) and the reference line (L2) with respect to the axial line (L 1) of the die cylinder (20) in the same direction, and wherein a lateral die cutting line (26) parallel to the reference line (12) is applied by said lateral die cutting blade (14a) onto the sheet material (12) supplied between said die cylinder (20) and anvil cylinder (24) mi its reference state.

15. The rotary die cutter as set forth in claim 14, wherein the longitudinal die L4.4.

cutting blade (14b), of the die cutting blade (14), for applying a longitudinal die cutting line (27) of an appointed length parallel to the sheet feeding direction (P) onto the sheet material (12) is set so as to become parallel to the sheet feeding direction (P) with the die (18) attached to the die cylinder (20).

16. A die substantially as hereinbefore descited with reference to the accompanying drawings.