JP6760153B2 - Die-cut roll of rotary die cutter - Google Patents

Description

In the present invention, a cutting edge is formed on the outer peripheral surface of a cylindrical die-cut roll main body rotated around the die axis, and the cutting edge is formed between the cutting edge and the cylindrical anvil roll rotated around the anvil axis parallel to the die axis. It relates to a die-cut roll of a rotary die cutter that cuts a sheet-shaped work material with a blade.

As a rotary die cutter provided with such a die-cut roll, for example, Patent Document 1 includes a cutter roll (die-cut roll) in which a cutter blade (cutting blade) is formed on an outer peripheral surface, and an anvil roll that receives the cutter blade. , A cutting device that cuts a long strip (sheet-shaped work material) supplied between both rolls into a plurality of short single-wafers with a cutter blade, and the outer peripheral surface of the cutter roll is relative. In the band-shaped body, which is located at a low position and is relatively high with respect to the sheet-fed body (work) that is the product when the strip-shaped body is cut, and the sheet-fed body-corresponding surface. It has a trim-compatible surface consisting of parts other than the single-wafer, and the single-wafer surface and the trim-compatible surface are adjacent to each other with the cutter blade in between, and the trim can be sucked and held on the trim-compatible surface. It is described as.

Here, in the rotary die cutter described in Patent Document 1, a block (outer peripheral plate) separate from the cutter roll is arranged on the outer peripheral surface of the cutter roll at a relatively high position of the trim corresponding surface. A through hole is formed in this block to penetrate the block in the thickness direction, and a suction port for sucking and holding the trim on the trim corresponding surface is provided in the arrangement area of the block on the outer peripheral surface of the cutter roll. It is formed so that the trim can be sucked and held on the trim corresponding surface.

Japanese Unexamined Patent Publication No. 2013-123504

By the way, in the die-cut roll of such a rotary die cutter, when the cutting edge is worn due to a long-term cutting operation, the cutting edge and the die-cut roll body are located outside the die axis direction of the cutting edge on the outer peripheral surface of the die-cut roll body. By re-polishing the bearer portion to be formed, a new sharp cutting edge and a bearer portion corresponding to the outer diameter of the cutting edge are formed and used again for cutting the work material.

However, if the outer peripheral surface of the outer peripheral plate remains in the original position after such re-polishing, the outer peripheral surface of the outer peripheral plate protrudes from the position of the cutting edge toward the outer peripheral side of the die-cut roll main body after re-polishing. Therefore, it becomes impossible to cut the work material. Therefore, after regrinding, for example, the outer peripheral plate must be replaced with a thinner one, resulting in inefficient and uneconomical results.

In addition, a plurality of washers are attached to the outer circumference of the stopper bolt to which the outer peripheral plate is attached and sandwiched between the outer peripheral plate and the cutter roll, and after re-polishing, the number of these washers is reduced to reduce the outer diameter of the outer peripheral plate. It is possible to have a diameter, but in this case, when the cutter roll has a rough surface such as a super hard alloy, the dimensional control is complicated, so the dimensional control of the washer thickness is also complicated. It ends up.

The present invention has been made under such a background, and the original outer peripheral plate can be used even after the cutting edge and the bearer portion are re-polished, and the work material can be used without complicated dimensional control. It is an object of the present invention to provide a die-cut roll of a rotary die cutter capable of cutting.

In order to solve the above problems and achieve such an object, the present invention projects from the outer peripheral surface to the outer peripheral surface of a columnar die-cut roll main body rotated around the die axis and orbits the outer peripheral surface. It is a die-cut roll of a rotary die cutter that cuts a sheet-shaped work material with the cutting edge between the cylindrical anvil roll that is rotated around the anvil axis parallel to the die axis. An outer peripheral plate curved along the outer peripheral surface is detachably attached to at least one of the inner side and the outer side of the cutting edge on the outer peripheral surface of the die-cut roll main body. Between the outer peripheral plate, a pressing means for pressing the outer peripheral plate toward the outer peripheral side of the die-cut roll main body and an outer peripheral position adjusting means for adjusting the position of the outer peripheral plate on the outer peripheral side of the die-cut roll main body are provided. It is characterized by being.

In such a die-cut roll of a rotary die cutter, after re-polishing the cutting edge and the bearer portion located on the outer peripheral surface of the die-cut roll body on the outer side of the cutting edge in the die axis direction, the bearing force is resisted by the pressing means. By adjusting the position of the outer peripheral plate to the inner peripheral side in the radial direction with respect to the die axis by the outer peripheral position adjusting means, it is possible to prevent the outer peripheral surface of the outer peripheral plate from protruding from the cutting edge or the bearer portion after re-polishing. Can be done.

Therefore, the work material can be cut using the original outer peripheral plate even after re-polishing, which is efficient and economical. Further, since the outer peripheral plate is positioned away from the outer peripheral surface of the die-cut roll main body by the pressing means, the outer peripheral surface of the die-cut roll main body facing the outer peripheral plate has a rough surface roughness like cemented carbide. However, complicated dimensional control is not required.

Here, as the pressing means, for example, a plate material made of an elastic material such as rubber or sponge may be interposed between the inner peripheral surface of the outer peripheral plate and the outer peripheral surface of the die-cut roll main body, as described above. If the outer peripheral surface of the die-cut roll body has a rough surface such as cemented carbide, die-cut by using a ball plunger that is screwed into the outer peripheral plate and presses the outer peripheral surface of the die-cut roll body. The outer peripheral plate can be stably supported regardless of the surface roughness of the outer peripheral surface of the roll body.

Further, as the outer peripheral position defining means, the outer peripheral position adjusting means provided with a stripper bolt having a head house accommodated in the outer peripheral plate and a screw portion screwed into the outer peripheral surface of the die-cut roll main body is used. By adjusting the position of the outer peripheral plate to the outer peripheral side of the die-cut roll main body with a washer interposed between the outer peripheral plate and the head, it is possible to easily and accurately adjust the position of the outer peripheral plate. Become.

As described above, according to the present invention, even when the cutting edge or bearer portion of the die-cut roll body is re-polished, the cutting edge or bearer portion does not cause complicated dimension control and the outer peripheral plate is not replaced. It can be reused without protruding more than the above, and the work material can be cut by the die-cut roll after re-polishing efficiently and economically.

It is a side view which shows one Embodiment of this invention. It is a cross-sectional view of YY in FIG. It is a ZZ enlarged sectional view in FIG. It is a figure corresponding to the ZZ enlarged cross-sectional view in FIG. 1 after regrinding the cutting edge and the bearer portion and adjusting the position of the outer peripheral plate.

1 to 4 show an embodiment of the present invention. In the die-cut roll of the rotary die cutter of the present embodiment, the die-cut roll main body 1 has a multi-stage columnar shape centered on the die axis O having the largest outer diameter of the central portion 1A, and has a smaller diameter than the central portion 1A. The shafts 1B at both ends are rotatably supported by the bearings of the frame of the rotary die cutter (not shown), and one of the shafts 1B is connected to a rotary drive means such as a motor and can rotate around the die axis O. It is said that.

Further, the die-cut roll main body 1 is a shaft 2 in which the shaft portions 1B at both ends and the inner peripheral portion of the central portion 1A are integrally formed of a steel material or the like, while the outer peripheral portion of the central portion 1A is larger than the shaft 2. The substantially cylindrical ring 3 formed of a sinter metal material such as a cemented carbide having a high hardness has a structure fixed by shrink fitting, cold fitting, press fitting, or the like.

On the outer peripheral portion of the ring 3, at both ends in the die axis O direction, a pair of annular bearer portions 3A having an outer peripheral surface located on one cylindrical surface centered on the die axis O are formed. As well as being formed, the outer peripheral surface of the ring 3 between these bearer portions 3A is recessed one step inner peripheral side from the outer peripheral surface of the bearer portion 3A, and the outer peripheral surface of the one-step recessed ring 3 is shown in FIG. As shown in FIGS. 3 and 4, the cutting edge 3B having a triangular cross section and projecting to the outer peripheral side is continuous in an oval shape having the same shape and the same size when viewed from the outer peripheral side of the die-cut roll main body 1 in the present embodiment. A plurality (two) are formed in the circumferential direction so as to orbit. The outer diameter of the cutting blade 3B is substantially equal to the outer diameter of the bearer portion 3A.

Further, in the rotary die cutter, an anvil roll (not shown) is rotatably supported around the anvil axis parallel to the die axis O in a direction opposite to the rotation direction of the die cut roll main body 1. In this anvil roll, the anvil body has a multi-stage columnar shape centered on the largest anvil axis with a constant outer diameter at the center in the anvil axis direction, and the length of the center in the anvil axis direction is It is substantially equal to the length of the ring 3 in the O direction of the die axis.

In such a rotary die cutter, the bearer portions 3A are brought into contact with both ends of the central portion of the anvil main body to rotate the die cut roll main body 1 and the anvil main body, whereby between the pair of bearer portions 3A and the central portions of each other. The sheet-shaped work material fed into the anvil roll is cut by the cutting blade 3B so as to be pushed through with the anvil roll.

Further, in the shaft 2 of the die-cut roll main body 1, a circular cross section having an equal inner diameter extending from one end face of the shaft 2 in the central portion 1A facing the die axis O direction toward the other end face side in parallel with the die axis O. The blind hole-shaped flow paths 2A are formed at intervals in the circumferential direction so as to position the center on one cylindrical surface centered on the die axis O.

Further, these flow paths 2A branch into a plurality of branch holes 2B at intervals in the die axis O direction in the central portion 1A and extend to the outer peripheral side in the radial direction with respect to the die axis O, and these branch holes 2B are subjected to the present implementation. In the embodiment, a plurality of rows (4 rows inside one cutting blade 3B) are opened inside the cutting edge 3B on the outer peripheral surface of the central portion 1A of the shaft 2 at intervals in the die axis O direction. There is.

Furthermore, on the one end surface side of the central portion 1A of the die-cut roll main body 1, an annular suction box or blow box (not shown) centered on the die axis O slides against the rotating die-cut roll main body 1. It is fixed to the mount of the rotary die cutter so that it can be contacted and is installed non-rotating. An air suction means or an air supply means is connected to the suction box or blow box so as to communicate with the flow path 2A that opens at the one end surface of the central portion 1A of the die-cut roll main body 1.

On the other hand, in the ring 3, the inner outer peripheral surface of the cutting blade 3B is further recessed to the inner peripheral side one step from the outer peripheral surface between the bearer portion 3A and the cutting blade 3B as shown in FIGS. 3 and 4. In the present embodiment, the ring 3 is located on the outer peripheral surface of the ring 3 inside the cutting edge 3B, which is further recessed, at a position coaxial with the plurality of branch holes 2B on the outer peripheral surface of the shaft 2 as shown in FIG. A flow path 3C formed so as to penetrate in the radial direction is open. The outer diameter of the outer peripheral surface of the inner peripheral surface of the cutting blade 3B of the ring 3 is such that the outer diameter from the die axis O is equal to the outer diameter of the outer outer peripheral surface of the cutting blade 3B or smaller than the outer diameter of the cutting blade 3B. If it is within the range, it may be larger than the outer diameter of the outer peripheral surface of the cutting edge 3B.

Further, an outer peripheral plate 4 is detachably attached to the outer peripheral surface of the ring 3 inside the cutting blade 3B. In the present embodiment, the outer peripheral plate 4 is formed of the same steel material as the shaft 2, which has a lower hardness than the ring 3 made of a super hard alloy or the like, or a resin material such as nylon obtained by polymerizing and molding a nylon monomer in the atmosphere. Then, when viewed from the outer peripheral side of the die-cut roll main body 1, a plate-shaped object having an oval shape slightly smaller than the oval formed by the cutting blade 3B is divided into two halves having the same shape in the circumferential direction. It is formed in an oval shape and curved along the radius of the outer peripheral surface of the ring 3 inside the cutting edge 3B, and these two divided pieces are combined and housed inside the cutting edge 3B. Ru. A slight gap is formed between the outer peripheral plates 4 divided into two and between the outer peripheral plates 4 and the cutting edge 3B.

Further, in the outer peripheral plate 4, the flow path 4A is formed in the state of being housed inside the cutting edge 3B in accordance with the position of the opening of the flow path 3C of the ring 3. When there is a gap in the radial direction with respect to the die axis O between the outer peripheral surface of the ring 3 and the inner peripheral surface of the outer peripheral plate 4, there is a gap between the outer peripheral surface of the ring 3 and the inner peripheral surface of the outer peripheral plate 4. , An O-ring or packing having a hole for communicating with the flow paths 3C and 4A may be interposed.

Further, the ring 3 and the outer peripheral plate 4 are formed so that the mounting holes 3D and 4B are coaxially penetrated in the radial direction at positions avoiding the flow paths 3C and 4A in the die axis O direction and the circumferential direction. At the same time, screw holes 2C are formed in the shaft 2 at positions coaxial with these mounting holes 3D and 4B. The mounting hole 4B of the outer peripheral plate 4 has an elongated hole shape extending in the circumferential direction as shown in FIG. 1 when viewed from the outer peripheral side, and the inner peripheral side is one size smaller as shown in FIGS. 2 to 4 in the cross section. The mounting hole 3D of the ring 3 has an inner diameter equal to the width in the die axis O direction on the inner peripheral side of the mounting hole 4B of the outer peripheral plate 4, and the screw hole 2C of the shaft 2 is the mounting hole of the ring 3. The inner diameter is smaller than 3D.

As shown in FIGS. 1 and 2, a plurality of sets (two sets) of these screw holes 2C and mounting holes 3D and 4B are provided for each outer peripheral plate 4 in the circumferential direction. The two sets of flow paths 4A in the above are spaced apart from each other at equal positions in the die axis O direction and extend in the radial direction with respect to the die axis O.

Furthermore, the outer peripheral plate 4 is formed so that the mounting screw hole 4C penetrates the outer peripheral plate 4 in the radial direction with respect to the die axis O at a position avoiding the mounting hole 4B and the flow path 3C of the ring 3. In the present embodiment, a plurality of (two) mounting screw holes 4C for one outer peripheral plate 4 are spaced apart from these mounting holes 4B in the die axis O direction at the same positions as the two mounting holes 4B in the circumferential direction. It is formed open.

Then, between the die-cut roll main body 1 and the outer peripheral plate 4, a pressing means 5 for pressing the outer peripheral plate 4 toward the outer peripheral side of the die-cut roll main body 1 is provided in the mounting screw hole 4C, and the screw hole 2C and the mounting are provided. The holes 3D and 4B are provided with outer peripheral position adjusting means 6 for adjusting the position of the outer peripheral plate 4 on the outer peripheral side of the die-cut roll main body 1.

Of these, the pressing means 5 is a ball plunger in the present embodiment as shown in FIGS. 3 and 4. That is, the pressing means 5 faces the bottomed cylindrical plunger body 5A centered on the plunger axis A in which the male screw portion screwed into the mounting screw hole 4C is formed on the outer peripheral portion and the outer peripheral surface of the ring 3. The elastic member 5B such as a coil spring compressed and housed in the inner peripheral portion of the plunger main body 5A to be opened is locked and projected so as not to come out from the opening of the plunger main body 5A, and is projected in the direction of the plunger axis A. It is equipped with a ball 5C attached so that it can move forward and backward.

Further, the outer peripheral position adjusting means 6 is provided with a stripper bolt in the present embodiment, and the position of the outer peripheral plate 4 on the outer peripheral side of the die-cut roll main body 1 is adjusted by the stripper bolt and the washer 7. The stripper bolts are coaxially and integrally in order from the outer peripheral side to the inner peripheral side of the die-cut roll main body 1, and the width of the inner peripheral portion of the mounting hole 4B accommodated in a slightly larger portion on the outer peripheral side of the mounting hole 4B of the outer peripheral plate 4. A disk-shaped head 6A having a larger outer diameter, a shaft portion 6B having a columnar diameter smaller than the head 6A and housed in the mounting hole 3D of the ring 3 from the inner peripheral side of the mounting hole 4B, and this shaft. It has a screw portion 6C having a diameter smaller than that of the portion 6B and screwed into the screw hole 2C on the outer peripheral surface of the shaft 2 of the die-cut roll main body 1. The washer 7 is interposed between the bottom surface of a slightly larger portion on the outer peripheral side of the mounting hole 4B of the outer peripheral plate 4 and the back surface of the head portion 6A of the stripper bolt.

In the die-cut roll of the rotary die cutter provided with the pressing means 5 and the outer peripheral position adjusting means 6, the elastic member 5B in the ball plunger of the pressing means 5 is compressed and the ball 5C presses the outer peripheral surface of the ring 3. The outer peripheral plate 4 is pressed toward the outer peripheral side of the die-cut roll main body 1 by the reaction force of the pressing force.

Then, when the bottom surface of the slightly larger portion on the outer peripheral side of the mounting hole 4B of the outer peripheral plate 4 comes into contact with the back surface of the head portion 6A of the stripper bolt in the outer peripheral position adjusting means 6 via the washer 7, the outer peripheral plate 4 has a die axis. It is positioned on the outer peripheral side in the radial direction with respect to O. In the state of being positioned in this way, the outer diameter of the outer peripheral surface of the outer peripheral plate 4 is set to be smaller than the outer diameter of the bearer portion 3A and the cutting edge 3B of the ring 3.

Here, as shown in FIG. 3, there was only one washer 7 before re-polishing, but when the sharpness is impaired due to wear of the cutting edge 3B, the bearer portion 3A and the cutting edge 3B are re-polished. As a result, when the outer diameters of the bearer portion 3A and the cutting edge 3B are reduced as shown by the solid line from the broken line in FIG. 4, the washer 7 is increased to two as shown in FIG. Alternatively, replace the washer 7 with one thicker than that shown in FIG. At this time, the radial position of the stripper bolt of the outer peripheral position adjusting means 6 with respect to the die axis O does not change.

Then, as shown in FIG. 4, the position of the outer peripheral plate 4 is adjusted to the inner peripheral side in the radial direction with respect to the die axis O against the pressing force of the pressing means 5 by the amount of the increase in the thickness of the washer 7. Is positioned. Therefore, by making the amount of increase in the thickness of the washer 7 equal to the amount of reduction in the outer diameter due to re-polishing of the bearer portion 3A and the cutting edge 3B, even if the same outer peripheral plate 4 is used, the outer peripheral surface thereof is used. The difference between the diameter and the outer diameters of the bearer portion 3A and the cutting edge 3B is made equal to the state before re-polishing shown in FIG. 3, and the outer peripheral plate 4 is on the outer peripheral side of the bearer portion 3A and the cutting edge 3B after re-polishing. It can be prevented from protruding to the diameter.

Therefore, the work material can be cut without replacing the outer peripheral plate 4 with a thin thickness after re-polishing, which is efficient and economical. Further, since the outer peripheral plate 4 is pressed by the pressing means 5 and positioned by the outer peripheral position adjusting means 6 in a state of being separated from the outer peripheral surface of the ring 3 of the die-cut roll main body 1, the ring 3 has a surface like a cemented carbide. Even if the roughness is rough, this surface roughness does not affect the position of the outer peripheral plate 4, and complicated dimensional control is performed as in the case where a washer is interposed between the ring and the outer peripheral plate. It doesn't take.

In particular, in the present embodiment, as the pressing means 5, a ball plunger that is screwed into the mounting screw hole 4C of the outer peripheral plate 4 and presses the outer peripheral surface of the ring 3 of the die-cut roll main body 1 is used. Even if 3 is made of a cemented carbide having a rough surface roughness, the outer peripheral plate 4 can be stably pressed and supported on the outer peripheral side regardless of the surface roughness.

Further, in the present embodiment, the outer peripheral position adjusting means 6 is screwed into the head portion 6A housed in the stepped mounting hole 4B of the outer peripheral plate 4 and the screw hole 2C on the outer peripheral surface of the shaft 2 of the die-cut roll main body 1. A stripper bolt having a screw portion 6C is provided, and a washer 7 interposed between the bottom surface of the mounting hole 4B of the outer peripheral plate 4 and the head portion 6A positions the outer peripheral plate 4 on the outer peripheral side of the die-cut roll body 1. Is adjusted.

Therefore, when increasing the number of washer 7s or replacing them with washers 7 having different thicknesses as described above, the amount of increase in the thickness of the washer 7 is removed by regrinding the bearer portion 3A and the cutting edge 3B. By making the diameter equal to the reduced diameter, the difference between the outer diameter of the outer peripheral surface of the outer peripheral plate 4 and the outer diameters of the bearer portion 3A and the cutting edge 3B is shown in FIG. It can be equal to the state before polishing.

Moreover, since the mounting hole 4B in the present embodiment has an elongated hole shape extending in the circumferential direction when viewed from the outer peripheral side of the outer peripheral plate 4, for example, the outer peripheral plate 4 has the same shape and the same size in the circumferential direction as described above. Even if the shape of the oval is slightly smaller than the oval formed by the cutting edge 3B and is approximately half the circumference of the outer peripheral surface of the ring 3, instead of the semi-oval shape divided into two, the stripper is used after adjusting the outer peripheral position. The position of the head portion 6A of the bolt can be finely adjusted along the elongated hole formed by the mounting hole 4B, and it is possible to correspond to such an outer peripheral plate 4.

1 Die-cut roll body 2 Shaft 3 Ring 3A Bearer part 3B Cutting edge 4 Outer circumference plate 5 Pressing means 5A Plunger body 5B Elastic member 5C Ball 6 Outer circumference position adjusting means 6A Head 6B Shaft part 6C Thread part 7 Washer O Die axis

Claims (3)

On the outer peripheral surface of the columnar die-cut roll body rotated around the die axis, a cutting edge is formed so as to project from the outer peripheral surface and orbit the outer peripheral surface, and the circle is rotated around the anvil axis parallel to the die axis. A die-cut roll of a rotary die cutter that cuts a sheet-shaped work material between a columnar anvil roll and the cutting edge.
An outer peripheral plate curved along the outer peripheral surface is detachably attached to at least one of the inner side and the outer side of the cutting edge on the outer peripheral surface of the die-cut roll main body.
Between the die-cut roll main body and the outer peripheral plate, a pressing means for pressing the outer peripheral plate toward the outer peripheral side of the die-cut roll main body and an outer peripheral position for adjusting the position of the outer peripheral plate with respect to the outer peripheral side of the die-cut roll main body. A die-cut roll of a rotary die cutter characterized by being equipped with adjusting means. The die-cut roll of the rotary die cutter according to claim 1, wherein the pressing means is a ball plunger that is screwed into the outer peripheral plate and presses the outer peripheral surface of the die-cut roll body. The outer peripheral position adjusting means includes a stripper bolt having a head house accommodated in the outer peripheral plate and a screw portion screwed into the outer peripheral surface of the die-cut roll main body, and is inserted between the outer peripheral plate and the head. The die-cut roll of the rotary die cutter according to claim 1 or 2, wherein the position of the outer peripheral plate on the outer peripheral side of the die-cut roll main body is adjusted by a washer to be mounted.

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