EP0728560A1 - Knife cylinder for a rotary die cutter - Google Patents
Knife cylinder for a rotary die cutter Download PDFInfo
- Publication number
- EP0728560A1 EP0728560A1 EP96101299A EP96101299A EP0728560A1 EP 0728560 A1 EP0728560 A1 EP 0728560A1 EP 96101299 A EP96101299 A EP 96101299A EP 96101299 A EP96101299 A EP 96101299A EP 0728560 A1 EP0728560 A1 EP 0728560A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutter
- fitting plate
- knife cylinder
- cutter fitting
- rotary die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D2007/2607—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for mounting die cutters
Definitions
- the present invention relates to a knife cylinder of a rotary die cutter to be used for processing of corrugated boards etc.
- a marking-off of a necessary shape or a punching process is carried out on a previously printed corrugated board by use of a rotary die cutter as shown in a front view and a side view of Fig. 3.
- a rotary die cutter of this kind comprises, as shown in Fig. 3, a right and left pair of base frames 14a, 14b provided standingly in parallel and connected each other via an upper stay 12 and a lower stay 13 extending in the right and left direction respectively, and an anvil cylinder 2 and a knife cylinder 3 of a same diameter, supported each by a shaft and extending in the right and left direction at the upper portion and the lower portion respectively of both frames 14a, 14b.
- Both cylinders 2, 3 are engaged with each other so as to rotate synchronously in mutually opposite directions via gears 15, 16 fitted to an end on a same side of the respective shaft and via a gear driving means (not shown).
- an upper and lower pair of transfer rolls 17a, 17b of a same diameter are provided to supply a corrugated board sheet 1 between both cylinders 2, 3.
- a cutting knife 5 or a creaser knife etc. is fixed on the outer circumferential surface of the knife cylinder 3 via a cutter fitting plate 4, thereby the corrugated board sheet 1 transferred one by one by the transfer rolls 17a, 17b from a printing process which is a preceding process is applied with a necessary processing like a punching or a marking-off etc. by nipping rotations of the anvil cylinder 2 and the cutting knife 5 or the creaser knife fixed to the knife cylinder 3.
- a cutting function is described.
- a basic structure of a rotary die cutter portion to do cutting of a corrugated board sheet to a necessary shape there are two kinds of types as shown in Figs. 4 and 5.
- Fig. 4 The one shown in Fig. 4 is named a soft cutting type, wherein a knife cylinder 3 fixed with a cutting knife 5 on its outer circumferential surface via a cutter fitting plate 4 and an anvil cylinder 2 covered with a shock absorbing material 8 like a urethane rubber etc. on its outer circumferential surface are engaged with each other and a corrugated board sheet 1 is cut to a desired shape by the cutting knife 5 being pierced through the corrugated board sheet 1 and an edge of the knife encroaching upon the shock absorbing material 8 of the anvil cylinder 2.
- Fig. 5 The one shown in Fig. 5 is named a hard cutting type, wherein a knife cylinder 3 fixed with a cutting knife 5 on its outer circumferential surface via a cutter fitting plate 4 and an anvil cylinder 2 of an iron surface are engaged with each other and a corrugated board sheet 1 is cut to a desired shape by the cutting knife 5 coming in contact with, or being pressed with an appropriate pressing force to, the outer circumferential surface of the anvil cylinder 2.
- a setting of the cutter fitting plate 4 to fix the cutting knife 5 is described.
- a metal member 19 of a rectangular cross section extending in the axial direction is provided projectingly on the outer circumferential surface of the knife cylinder 3 and the cutter fitting plate 4 of a bent rectangular plate shape is positioned with its front end touching the metal member 19. Then, making use of screw holes 6 formed within the outer circumferential surface of the knife cylinder 3, flat head bolts 9 are screwed in so as to fix the cutter fitting plate 4 one by one to the direction of the rear end side.
- Fig. 7 which shows a development of the corrugated board sheet 1 to be cut on the cutter fitting plate 4
- the cutting knife 5 is fitted to the cutter fitting plate 4 in accordance with a cutting line shown in a line S, and a broken line K shows a marking line.
- the present invention is disclosed with an object to provide an economical knife cylinder of a rotary die cutter wherein a cutter fitting plate is quickly fitted to a rotary die cutter, thereby a non-operation time of machines required for the fitting is decreased so that an operation time is increased, thus a productivity is enhanced.
- one feature is a knife cylinder of a rotary die cutter in which a knife cylinder is provided on its cylindrical face with a cutter fitting plate of a bent rectangular plate shape having an arcuate cross section bent along said cylindrical face, wherein a metal member is provided on said cylindrical face extendingly in the axial direction of said knife cylinder in engagement with a front end of said cutter fitting plate and a right and left pair of circumferential directional metal members are provided on said cylindrical face extendingly in the circumferential direction in engagement with the right and left ends of said cutter fitting plate, thereby said cutter fitting plate is fixed on said cylindrical face tri-directionally in engagement with each of said metal members.
- Another feature of the present invention is a knife cylinder of a rotary die cutter wherein an upwardly inclined face is formed at each engaging end portion of said cutter fitting plate, a downwardly inclined face is formed at each engaging end portion of said metal members and each downwardly inclined face of said metal members presses each engaging upwardly inclined face of said cutter fitting plate, thereby said cutter fitting plate is fixed on said cylindrical face.
- a further feature of the present invention is a knife cylinder of a rotary die cutter wherein said pair of circumferential directional metal members are formed as annular metal members to be fitted-in around said cylindrical face of the knife cylinder.
- a still further feature of the present invention is a knife cylinder of a rotary die cutter wherein one of said pair of annular metal members is fitted-in fixedly around said cylinder face and the other is fitted-in detachably around said cylinder face.
- a further feature of the present invention is a knife cylinder of a rotary die cutter wherein an engagement of said cutter fitting plate and each of said metal members is made via a metal element inbetween.
- a front end and right and left ends of a cutter fitting plate fixed with a cutting knife can be fixed easily on a knife cylinder and yet, by a function of a front end positioning metal member and fixing rings, a floating of said cutter fitting plate can be prevented securely. Accordingly, the number of flat head bolts used for fixing a cutter fitting plate in the prior art can be greatly lessened.
- Fig. 1 shows a knife cylinder of a rotary die cutter of the preferred embodiment, wherein Fig. 1(A) is an entire perspective view, Fig. 1(B) is a transverse sectional view taken on line B-B in the direction of arrows of Fig. 1(A), and Fig. 1(C) is a longitudinal sectional view taken on line C-C in the direction of arrows of Fig. 1(A).
- Fig. 2 is a development of a cutter fitting plate of Fig. 1.
- corner cut-off portions with an up-grade to the center of the cylinder are formed all around the circumference and the fixing rings 8a, 8b can be fixed to the knife cylinder 3 via bolts 11 by making use of bolt holes drilled at predetermined places of the outer circumferential face of the knife cylinder 3.
- Fixing of the cutter fitting plate 4 is made first in a way that, as shown in Fig. 1(A), the front end of the cutter fitting plate 4 is inserted in (or hit to) the inclined face portion (or space) of the metal member 7 fixed on the knife cylinder 3 for positioning in the circumferential direction and then, as shown in Fig. 2, the cutter fitting plate 4 is fixed to the knife cylinder 3 via flat head bolts 9 one by one to the direction of the rear end side.
- the fixing rings 8a, 8b on the right and left end sides are moved respectively to the central direction so that they fit-in the right and left ends of the cutter fitting plate 4 and press the cutter fitting plate 4 via said inclined faces.
- the fixing rings 8a, 8b are fixed to the knife cylinder 3 by a small number of bolts 11.
- the three faces of the front end and the right and left ends of the cutter fitting plate 4 are pressed and held securely and are prevented from floating.
- the number of the flat head bolts 9 used for fixing of the cutter fitting plate 4 is decreased so that they are used only partly at the central portion and the rear end portion of the cutter fitting plate 4, thereby a working time for a replacement of the cutter fitting plates 4 accompanying with a change of orders can be shortened greatly.
- a positioning of a front end of a cutter fitting plate is made by a metal member extending in the axial direction and a fixing thereof to the knife cylinder is made by a large number of bolts provided vertically and horizontally.
- a positioning and fixing of the front end of the cutter fitting plate 4 is made by the metal member 7 extending in the axial direction with a corner cut-off portion having an inclined face and a positioning and fixing thereof in the right and left direction can be made easily, securely and quickly by a right and left pair of annular metal members or fixing rings 8a, 8b, hence the fixing of the cutter fitting plate 4 to the knife cylinder 3 by way of bolting becomes possible by use of a small number of bolts.
- a positioning and fixing work of a front end of a cutter fitting plate fixed with a cutting knife and a positioning and fixing work of right and left ends of the cutter fitting plate, respectively can be done easily, quickly and securely, the number of bolts as heretofore used for fixing the cutter fitting plate can be decreased greatly.
- the cutter fitting plate and the metal members are formed with upward inclined faces and downward inclined faces, respectively, at their end portions and such inclined faces are lapped each other so that the cutter fitting plate is pressed by the metal members, mutual friction contact faces become larger and with an effect of wedge as well, a fixing of the cutter fitting plate can be done more securely and stably.
- the right and left pair of circumferential directional metal members are formed as annular metal members to be fitted-in around the cylindrical face, these annular metal members are well fitted to the cylindrical face so as to be properly positioned, thus said fixing of the cutter fitting plate can be done furthermore securely.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Object: To provide an economical knife cylinder of a rotary die cutter in which a cutter fitting plate is fixed quickly to the rotary die cutter and a non-operation time of machines required for the fixing is decreased and an operation time is increased, thereby a productivity is enhanced.
Construction: A knife cylinder of a rotary die cutter in which a knife cylinder (3) is provided on its cylindrical face with a cutter fitting plate (4) of a bent rectangular plate shape having an arcuate cross section bent along said cylindrical face, wherein a metal member (7) is provided on said cylindrical face extendingly in the axial direction of said knife cylinder (3) in engagement with a front end of said cutter fitting plate (4) and a right and left pair of circumferential directional metal members (8a, 8b) are provided on said cylindrical face extendingly in the circumferential direction in engagement with the right and left ends of said cutter fitting plate (4), thereby said cutter fitting plate (4) is fixed on said cylindrical face tri-directionally in engagement with each of said metal members (7, 8a, 8b).
Description
- The present invention relates to a knife cylinder of a rotary die cutter to be used for processing of corrugated boards etc.
- In manufacturing of corrugated board boxes, for example, a marking-off of a necessary shape or a punching process is carried out on a previously printed corrugated board by use of a rotary die cutter as shown in a front view and a side view of Fig. 3.
- A rotary die cutter of this kind comprises, as shown in Fig. 3, a right and left pair of
base frames upper stay 12 and alower stay 13 extending in the right and left direction respectively, and ananvil cylinder 2 and aknife cylinder 3 of a same diameter, supported each by a shaft and extending in the right and left direction at the upper portion and the lower portion respectively of bothframes cylinders gears - On the upstream side of both
cylinders corrugated board sheet 1 between bothcylinders - A
cutting knife 5 or a creaser knife etc. is fixed on the outer circumferential surface of theknife cylinder 3 via acutter fitting plate 4, thereby thecorrugated board sheet 1 transferred one by one by the transfer rolls 17a, 17b from a printing process which is a preceding process is applied with a necessary processing like a punching or a marking-off etc. by nipping rotations of theanvil cylinder 2 and thecutting knife 5 or the creaser knife fixed to theknife cylinder 3. - Next, a cutting function is described. Generally, as a basic structure of a rotary die cutter portion to do cutting of a corrugated board sheet to a necessary shape, there are two kinds of types as shown in Figs. 4 and 5.
- The one shown in Fig. 4 is named a soft cutting type, wherein a
knife cylinder 3 fixed with acutting knife 5 on its outer circumferential surface via acutter fitting plate 4 and ananvil cylinder 2 covered with ashock absorbing material 8 like a urethane rubber etc. on its outer circumferential surface are engaged with each other and acorrugated board sheet 1 is cut to a desired shape by thecutting knife 5 being pierced through thecorrugated board sheet 1 and an edge of the knife encroaching upon theshock absorbing material 8 of theanvil cylinder 2. - The one shown in Fig. 5 is named a hard cutting type, wherein a
knife cylinder 3 fixed with acutting knife 5 on its outer circumferential surface via acutter fitting plate 4 and ananvil cylinder 2 of an iron surface are engaged with each other and acorrugated board sheet 1 is cut to a desired shape by thecutting knife 5 coming in contact with, or being pressed with an appropriate pressing force to, the outer circumferential surface of theanvil cylinder 2. - Here, a setting of the
cutter fitting plate 4 to fix thecutting knife 5 is described. In a knife cylinder portion shown in Fig. 6(A), ametal member 19 of a rectangular cross section extending in the axial direction is provided projectingly on the outer circumferential surface of theknife cylinder 3 and thecutter fitting plate 4 of a bent rectangular plate shape is positioned with its front end touching themetal member 19. Then, making use ofscrew holes 6 formed within the outer circumferential surface of theknife cylinder 3,flat head bolts 9 are screwed in so as to fix thecutter fitting plate 4 one by one to the direction of the rear end side. - However, in such setting structure of a
cutter fitting plate 4, as shown in a development of Fig. 7, in order to maintain with a high accuracy a radius of rotation of the edge portion of thecutting knife 5 accompanying with rotations of theknife cylinder 3, it is necessary that a large number ofscrew holes 6 are provided vertically and horizontally at thecutter fitting plate 4, a large number offlat head bolts 9 for fixing are used and a fixing is made with a high density of fixing points. - Accordingly, in case of a replacement of the
cutter fitting plates 4 accompanying with a change of orders, it takes not a little time for detachment and attachment of a large number offlat head bolts 9, which is a large factor to lower an operation rate of a die cutter. In recent years, there are many cases where a change of orders is frequently taken place in order to deal with multi-kind less quantity productions, hence a shortening of a re-setting time is an important object. - In Fig. 7 which shows a development of the
corrugated board sheet 1 to be cut on thecutter fitting plate 4, thecutting knife 5 is fitted to thecutter fitting plate 4 in accordance with a cutting line shown in a line S, and a broken line K shows a marking line. - In the prior art as mentioned above, as a means to fix a cutter fitting plate fitted with a cutting knife to a knife cylinder of a rotary die cutter, such a construction is employed that screw holes formed within the outer circumferential surface of the knife cylinder are used and flat head bolts are inserted and screwed therein for tightening from the outer circumferential surface of the cutter fitting plate.
- Accordingly, in order to maintain an accuracy of a rotating radius of the cutting knife or in order to enhance a tightening ability of the cutter fitting plate to the knife cylinder, a fixing by use of a large number of flat head bolts becomes necessary, hence not a little time is needed for detachment and attachment of bolts in case of a replacement of cutter fitting plates accompanying with a change of orders.
- Further, as such changes of orders take place frequently, a non-operation time of machines increases and there is such a problem that a productivity cannot be enhanced.
- In view of the circumstances mentioned above, the present invention is disclosed with an object to provide an economical knife cylinder of a rotary die cutter wherein a cutter fitting plate is quickly fitted to a rotary die cutter, thereby a non-operation time of machines required for the fitting is decreased so that an operation time is increased, thus a productivity is enhanced.
- According to the present invention which can dissolve the above-mentioned problems in the prior art, one feature is a knife cylinder of a rotary die cutter in which a knife cylinder is provided on its cylindrical face with a cutter fitting plate of a bent rectangular plate shape having an arcuate cross section bent along said cylindrical face, wherein a metal member is provided on said cylindrical face extendingly in the axial direction of said knife cylinder in engagement with a front end of said cutter fitting plate and a right and left pair of circumferential directional metal members are provided on said cylindrical face extendingly in the circumferential direction in engagement with the right and left ends of said cutter fitting plate, thereby said cutter fitting plate is fixed on said cylindrical face tri-directionally in engagement with each of said metal members.
- Another feature of the present invention is a knife cylinder of a rotary die cutter wherein an upwardly inclined face is formed at each engaging end portion of said cutter fitting plate, a downwardly inclined face is formed at each engaging end portion of said metal members and each downwardly inclined face of said metal members presses each engaging upwardly inclined face of said cutter fitting plate, thereby said cutter fitting plate is fixed on said cylindrical face.
- A further feature of the present invention is a knife cylinder of a rotary die cutter wherein said pair of circumferential directional metal members are formed as annular metal members to be fitted-in around said cylindrical face of the knife cylinder.
- A still further feature of the present invention is a knife cylinder of a rotary die cutter wherein one of said pair of annular metal members is fitted-in fixedly around said cylinder face and the other is fitted-in detachably around said cylinder face.
- A further feature of the present invention is a knife cylinder of a rotary die cutter wherein an engagement of said cutter fitting plate and each of said metal members is made via a metal element inbetween.
- According to the present invention as so constructed, a front end and right and left ends of a cutter fitting plate fixed with a cutting knife can be fixed easily on a knife cylinder and yet, by a function of a front end positioning metal member and fixing rings, a floating of said cutter fitting plate can be prevented securely. Accordingly, the number of flat head bolts used for fixing a cutter fitting plate in the prior art can be greatly lessened.
- Hence, a time required for a replacement of cutting knives or cutter fitting plates can be shortened greatly, and enhancement of an operation rate of machines becomes possible.
- In the accompanying drawings:
- Fig. 1 shows a knife cylinder of a rotary die cutter of one preferred embodiment according to the present invention, wherein Fig. 1(A) is an entire perspective view, Fig. 1(B) is a transverse sectional view taken on line B-B in the direction of arrows of Fig. 1(A), and Fig. 1(C) is a longitudinal sectional view taken on line C-C in the direction of arrows of Fig. 1(A).
- Fig. 2 is a development showing a cutter fitting plate of Fig. 1.
- Fig. 3 is an entire view showing a die cutter in the prior art, wherein Fig. 3(A) is a front view and Fig. 3(B) is a side view.
- Fig. 4 is a side view of cylinders of Fig. 3 of a soft cutting type.
- Fig. 5 is a side view of cylinders of Fig. 3 of a hard cutting type.
- Fig. 6 shows a knife cylinder of a rotary die cutter in the prior art, wherein Fig. 6(A) is an entire perspective view, Fig. 6(B) is a transverse sectional view taken on line b-B in the direction of arrows of Fig. 6(A), and Fig. 6(C) is a longitudinal sectional view taken on line C-C in the direction of arrows of Fig. 6(A).
- Fig. 7 is a development showing a cutter fitting plate of Fig. 6.
- One preferred embodiment according to the present invention is described with reference to figures. Fig. 1 shows a knife cylinder of a rotary die cutter of the preferred embodiment, wherein Fig. 1(A) is an entire perspective view, Fig. 1(B) is a transverse sectional view taken on line B-B in the direction of arrows of Fig. 1(A), and Fig. 1(C) is a longitudinal sectional view taken on line C-C in the direction of arrows of Fig. 1(A). Fig. 2 is a development of a cutter fitting plate of Fig. 1.
- In the above figures, same numerals as those in Figs. 6 and 7 designate same components or parts respectively as those shown therein. Defferently from the conventional knife cylinder shown in Fig. 6, there are formed
screw holes 6 only at two places of an outer circumferential face of acutter fitting plate 4 of aknife cylinder 3. And thescrew holes 6 are regulated to be positioned at a predetermined measure in relation to ametal member 7 fixed extendingly along the axial direction on theknife cylinder 3. At both end portions of theknife cylinder 3, a right and left pair offixing rings 8a, 8b are fitted-in slidably in the axial direction. At mutually opposing inner end faces of thefixing rings 8a, 8b, as shown in Fig. 1(C), corner cut-off portions with an up-grade to the center of the cylinder are formed all around the circumference and thefixing rings 8a, 8b can be fixed to theknife cylinder 3 viabolts 11 by making use of bolt holes drilled at predetermined places of the outer circumferential face of theknife cylinder 3. - In such structure, at the front end portion and the right and left end portions of the
cutter fitting plate 4 fixed with acutting knife 5, inclined faces with a down-grade are formed with such a same grade as to perfectly fit each of the up-grade inclined faces of ametal member 7 of a square timber shape and of thefixing rings 8a, 8b. Numeral 10 designates a metal element provided for decreasing a wearing and damage each of said inclined faces. - Fixing of the
cutter fitting plate 4 is made first in a way that, as shown in Fig. 1(A), the front end of thecutter fitting plate 4 is inserted in (or hit to) the inclined face portion (or space) of themetal member 7 fixed on theknife cylinder 3 for positioning in the circumferential direction and then, as shown in Fig. 2, thecutter fitting plate 4 is fixed to theknife cylinder 3 viaflat head bolts 9 one by one to the direction of the rear end side. - Next, the
fixing rings 8a, 8b on the right and left end sides are moved respectively to the central direction so that they fit-in the right and left ends of thecutter fitting plate 4 and press thecutter fitting plate 4 via said inclined faces. In this state, thefixing rings 8a, 8b are fixed to theknife cylinder 3 by a small number ofbolts 11. - In the
knife cylinder 3 of this preferred embodiment as mentioned above, via themetal member 7 provided permanently at a fixed place and thefixing rings 8a, 8b provided at the right and left end portions detachably by afew bolts 11, the three faces of the front end and the right and left ends of thecutter fitting plate 4 are pressed and held securely and are prevented from floating. - Therefore, the number of the
flat head bolts 9 used for fixing of thecutter fitting plate 4 is decreased so that they are used only partly at the central portion and the rear end portion of thecutter fitting plate 4, thereby a working time for a replacement of thecutter fitting plates 4 accompanying with a change of orders can be shortened greatly. - Incidentally, as for a fixing method (or means) etc. of the
fixing rings 8a, 8b to press and support the right and left ends of thecutter fitting plate 4, there are considered various structures other than that exemplified. The present invention is not to be limited to the preferred embodiment as described above but may be added with various changes and modifications without departing from the spirit and scope of the invention. - In a knife cylinder in the prior art, a positioning of a front end of a cutter fitting plate is made by a metal member extending in the axial direction and a fixing thereof to the knife cylinder is made by a large number of bolts provided vertically and horizontally.
- While in this preferred embodiment, a positioning and fixing of the front end of the
cutter fitting plate 4 is made by themetal member 7 extending in the axial direction with a corner cut-off portion having an inclined face and a positioning and fixing thereof in the right and left direction can be made easily, securely and quickly by a right and left pair of annular metal members orfixing rings 8a, 8b, hence the fixing of thecutter fitting plate 4 to theknife cylinder 3 by way of bolting becomes possible by use of a small number of bolts. - Further, if a positioning of the
cutter fitting plate 4 is so made, in addition to themetal member 7 extending in the axial direction, that a position of either one of thefixing rings 8a, 8b at the right and left ends is set previously and, by use ofsaid metal member 7 and said one of thefixing rings 8a, 8b of which position is set previously, thecutter fitting plate 4 is positioned, and then thecutter fitting plate 4 is finally pressed by the other of thefixing rings 8a, 8b, a work of such positioning and a work of fixing of thecutter fitting plate 4 can be done further easily and quickly. - Therefore, even only with the front end positioning means of the
cutter fitting plate 4 and the fixing means thereof to theknife cylinder 3 by use of the inclined face according to this preferred embodiment, in comparison with theconventional knife cylinder 3, shortening of a non-operation time of machines in case of a replacement of thecutter fitting plates 4 by a change of orders, increase of an operation time and enhancement of a productivity become possible to a large extent. - Further, even only with the right and left end positioning means of the
cutter fitting plate 4 by use ofannular rings 8a, 8b and the fixing means thereof to theknife cylinder 3 by use of the inclined faces, in comparison with theconventional knife cylinder 3, a sizable rationalization becomes possible, as seen in the preferred embodiment. - According to the present invention, as a positioning and fixing work of a front end of a cutter fitting plate fixed with a cutting knife and a positioning and fixing work of right and left ends of the cutter fitting plate, respectively, can be done easily, quickly and securely, the number of bolts as heretofore used for fixing the cutter fitting plate can be decreased greatly.
- Thus, saving of a manpower can be realized. Further, a working time required for a replacement of cutting knives (or cutter fitting plates) accompanying with a change of orders can be shortened, and as such change of orders takes place frequently day by day, an operation rate of machines or a productivity can be enhanced greatly.
- Especially, according to the
Claim 1 of the present invention, as a cutter fitting plate is fixed only in engagement with metal members tri-directionally at its front end and both right and left ends and can be held on a cylindrical face securely and stably by a simple work not relying upon a bolting method etc., efficiency of a fixing and replacing work of the cutter fitting plates is greatly enhanced. - According to the
Claim 2 of the present invention, as the cutter fitting plate and the metal members are formed with upward inclined faces and downward inclined faces, respectively, at their end portions and such inclined faces are lapped each other so that the cutter fitting plate is pressed by the metal members, mutual friction contact faces become larger and with an effect of wedge as well, a fixing of the cutter fitting plate can be done more securely and stably. - According to the
Claim 3 of the present invention, as the right and left pair of circumferential directional metal members are formed as annular metal members to be fitted-in around the cylindrical face, these annular metal members are well fitted to the cylindrical face so as to be properly positioned, thus said fixing of the cutter fitting plate can be done furthermore securely. - According to the
Claim 4 of the present invention, as one of the right and left pair of annular metal members is previously fitted-in fixedly around the cylindrical face and the other is detachably moved and adjusted of its position, positioning etc. of the cutter fitting plate becomes simple and facilitated, thus efficiency of a fitting and replacing work of the cutter fitting plates is further enhanced. - Further, according to the
Claim 5 of the present invention, as the cutter fitting plate and each of the metal members are protected by metal elements provided inbetween, a wearing and damage of the contacting faces of the cutter fitting plate and each of the metal members is decreased, a life of machines is elongated and an accurate fixing of the cutter fitting plate can be maintained in a stable state for a long time.
Claims (5)
- A knife cylinder of a rotary die cutter in which a knife cylinder (3) is provided on its cylindrical face with a cutter fitting plate (4) of a bent rectangular plate shape having an arcuate cross section bent along said cylindrical face, characterized in that a metal member (7) is provided on said cylindrical face extendingly in the axial direction of said knife cylinder (3) in engagement with a front end of said cutter fitting plate (4) and a right and left pair of circumferential directional metal members (8a, 8b) are provided on said cylindrical face extendingly in the circumferential direction in engagement with the right and left ends of said cutter fitting plate (4), thereby said cutter fitting plate (4) is fixed on said cylindrical face tri-directionally in engagement with each of said metal members (7, 8a, 8b).
- A knife cylinder of a rotary die cutter as claimed in Claim 1, characterized in that an upwardly inclined face is formed at each engaging end portion of said cutter fitting plate (4), a downwardly inclined face is formed at each engaging end portion of said metal members (7, 8a, 8b) and each downwardly inclined face of said metal members (7, 8a, 8b) presses each engaging upwardly inclined face of said cutter fitting plate (4), thereby said cutter fitting plate (4) is fixed on said cylindrical face.
- A knife cylinder of a rotary die cutter as claimed in Claim 1 or 2, characterized in that said pair of circumferential directional metal members (8a, 8b) are formed as annular metal members to be fitted-in around said cylindrical face of the knife cylinder (3).
- A knife cylinder of a rotary die cutter as claimed in Claim 3, characterized in that one of said pair of annular metal members (8a, 8b) is fitted-in fixedly around said cylinder face and the other is fitted-in detachably around said cylinder face.
- A knife cylinder of a rotary die cutter as claimed in any one of Claims 1 to 4, characterized in that an engagement of said cutter fitting plate (4) and each of said metal members (7, 8a, 8b) is made via a metal element (10) inbetween.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP6342595A JPH08229885A (en) | 1995-02-27 | 1995-02-27 | Knife cylinder for rotary die cutter |
JP63425/95 | 1995-02-27 |
Publications (1)
Publication Number | Publication Date |
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EP0728560A1 true EP0728560A1 (en) | 1996-08-28 |
Family
ID=13228929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96101299A Withdrawn EP0728560A1 (en) | 1995-02-27 | 1996-01-30 | Knife cylinder for a rotary die cutter |
Country Status (3)
Country | Link |
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EP (1) | EP0728560A1 (en) |
JP (1) | JPH08229885A (en) |
AU (1) | AU680785B2 (en) |
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WO2001078954A2 (en) * | 2000-04-14 | 2001-10-25 | Marquip, Llc | Rotary knife with electromagnetic active vibration control |
US6684749B2 (en) | 2000-05-31 | 2004-02-03 | Fosber S.P.A. | Device and method for a job change in a system for the lengthwise cutting of a weblike material |
US20120216662A1 (en) * | 2009-11-20 | 2012-08-30 | Mitsubhish Heavy Industries Printing & Packing Machinery, Ltd | Blade mount of rotary die cutter, and method and device for fixing blade mount |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK174943B1 (en) * | 2002-02-13 | 2004-03-15 | Inter Ikea Sys Bv | Machine for punching items from a sheet of corrugated cardboard and for forming bending guide lines in the blanks |
JP2008155348A (en) * | 2006-12-26 | 2008-07-10 | Rengo Co Ltd | Rotary die cutter unit |
KR102127627B1 (en) * | 2018-12-27 | 2020-06-29 | 한국다이보드 주식회사 | Roll type press mold |
KR102127630B1 (en) * | 2018-12-27 | 2020-06-29 | 한국다이보드 주식회사 | Roll type press mold |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3738196A1 (en) * | 1987-11-10 | 1989-05-18 | Schule Gmbh F H | Device for fastening punching tools to a punching drum |
EP0355673A1 (en) * | 1988-08-16 | 1990-02-28 | Delkeskamp Kg | Stamping press, in particular a flat-bed stamping press |
DE8909237U1 (en) * | 1989-07-31 | 1990-11-29 | Alfred Linden Kg, 5882 Meinerzhagen, De |
-
1995
- 1995-02-27 JP JP6342595A patent/JPH08229885A/en active Pending
-
1996
- 1996-01-30 EP EP96101299A patent/EP0728560A1/en not_active Withdrawn
- 1996-02-15 AU AU45556/96A patent/AU680785B2/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3738196A1 (en) * | 1987-11-10 | 1989-05-18 | Schule Gmbh F H | Device for fastening punching tools to a punching drum |
EP0355673A1 (en) * | 1988-08-16 | 1990-02-28 | Delkeskamp Kg | Stamping press, in particular a flat-bed stamping press |
DE8909237U1 (en) * | 1989-07-31 | 1990-11-29 | Alfred Linden Kg, 5882 Meinerzhagen, De |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19925612A1 (en) * | 1999-06-04 | 2000-12-07 | Winkler & Duennebier Ag | Rotatable knife roller |
US6494123B2 (en) | 1999-06-04 | 2002-12-17 | Winkler & Dünnebier Aktiengesellschaft | Rotary blade roll |
DE19925612B4 (en) * | 1999-06-04 | 2007-10-31 | WINKLER + DüNNEBIER AG | Rotatable knife roller with foil knife |
WO2001078954A2 (en) * | 2000-04-14 | 2001-10-25 | Marquip, Llc | Rotary knife with electromagnetic active vibration control |
WO2001078954A3 (en) * | 2000-04-14 | 2002-02-21 | Marquip Llc | Rotary knife with electromagnetic active vibration control |
US6684749B2 (en) | 2000-05-31 | 2004-02-03 | Fosber S.P.A. | Device and method for a job change in a system for the lengthwise cutting of a weblike material |
US20120216662A1 (en) * | 2009-11-20 | 2012-08-30 | Mitsubhish Heavy Industries Printing & Packing Machinery, Ltd | Blade mount of rotary die cutter, and method and device for fixing blade mount |
US9457488B2 (en) * | 2009-11-20 | 2016-10-04 | Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd. | Blade mount of rotary die cutter, and method and device for fixing blade mount |
Also Published As
Publication number | Publication date |
---|---|
AU680785B2 (en) | 1997-08-07 |
AU4555696A (en) | 1996-09-26 |
JPH08229885A (en) | 1996-09-10 |
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