JP5868459B2 - Cutting device - Google Patents

Description

  The present invention relates to a roll-type cutting apparatus used for cutting a synthetic resin film or sheet such as polyethylene used for absorbent articles such as sanitary napkins and disposable paper diapers, and a sheet made of nonwoven fabric.

For example, when forming an absorbent article such as a sanitary napkin or a disposable diaper, a liquid-impermeable back sheet, a liquid-permeable top sheet, or the like constituting the absorbent article as a raw material, or these top sheets The composite member laminated with the back sheet and the absorbent body is cut into a desired shape.
When cutting such an object to be cut such as a film, sheet, or composite member, for example, as described in Patent Document 1, a cutter roll having a cutting blade for cutting the object to be cut formed on the outer peripheral surface; Generally, a cutting device provided with an anvil roll having a smooth outer peripheral surface is used.
In this type of cutting apparatus, for example, as described in Patent Document 2 and Patent Document 3, the cutting blade of the cutter roll can cut a cutting target into a predetermined shape by rotating the cutter roll. In addition, the position, shape, and the like on the outer peripheral surface of the cutter roll are set. And while rotating the cutter roll and the anvil roll around the rotation axis, the cutting edge of the cutter roll is cut by inserting the cutting object between the cutter roll and the anvil roll. The object is cut while being pressed against the outer peripheral surface side of the anvil roll, whereby the object to be cut can be cut into a desired shape.

By the way, in the absorbent article, a perforation is provided at a predetermined position, and a part of the absorbent article can be relatively easily cut by hand along the perforation. There is something that is.
For example, disposable diapers for low-birth-weight infants are designed to reduce the burden on low-birth-weight infants by changing their postures when removing disposable diapers attached to low-birth-weight infants. It is important to be able to remove disposable diapers regardless of posture.
Therefore, the disposable diaper for low birth weight infants is provided with the fastening tape in the disposable diaper so that the fastening tape provided on the back sheet can be separated from the disposable diaper for use in wearing the disposable diaper. A perforation is provided in the vicinity of the position. Then, by cutting a part of the disposable diaper along the perforation, the fastening tape can be separated along with the part of the disposable diaper.

Here, conventionally, when forming a sheet or the like having a perforation as described above, the formation of the outer shape of the sheet or the like by cutting the sheet or the like and the formation of the perforation are performed by separate apparatuses and processes, respectively. I was going.
That is, the cutting object such as the sheet is cut into a desired shape by the cutting device, and the perforation forming means is provided with a perforation blade provided in place of the cutting blade before or after cutting. The perforation of the cutting object and the formation of perforations were performed separately, for example, by forming perforations on the object to be cut with a perforation forming apparatus equipped with a cutter roll and an anvil roll.

However, when the cutting device and the perforation forming device are separately provided on the line in this way, the timing of rotation of each cutter roll of these cutting devices and the perforation forming device, the cutting blades and the perforation blades If the position is not controlled accurately and accurately, there is a problem that the cutting position by the cutting blade of the cutting device and the perforation forming position by the perforation blade of the perforation forming device are relatively shifted.
In addition, when the cutting blades of the cutting device and the perforation blades of the perforation forming device are deteriorated, it is necessary to replace each cutter roll and perform maintenance, as well as the timing of rotation of each cutter roll, etc. Since various adjustments need to be performed again, there is a problem that the work takes a lot of time and effort. Furthermore, since two types of apparatuses for cutting and perforation forming are used, a large space and a large amount of cost are required.

JP 2001-62775 A Japanese Patent Laid-Open No. 11-188699 JP 2004-291128 A

  The technical problem of the present invention is that both the cutting of the object to be cut and the formation of the perforation can be performed stably and relatively easily, and the space can be omitted and the maintenance can be omitted as compared with the prior art. It is to provide an easy cutting device.

In order to solve the above problems, a cutting apparatus of the present invention is as follows.
(1) A cutter roll that cuts an object to be cut and an anvil roll having a smooth outer peripheral surface, and the cutting between the cutter roll and the anvil roll while rotating the cutter roll and the anvil roll. A cutting device for cutting a cutting object into a predetermined shape by inserting the object, wherein the cutter roll extends continuously on the outer peripheral surface in the circumferential direction of the outer peripheral surface as a whole. A cutting blade that cuts the formed cutting object, and a perforation that is formed so as to extend in the circumferential direction of the outer peripheral surface as a whole and cuts at a predetermined interval with respect to the cutting object. The cutting blade has a cutting edge facing the radially outward side of the cutter roll formed continuously along the outer peripheral surface of the cutter roll, Perforation blade cutting edge facing away side in the radial direction of the cutter roll are formed at predetermined intervals along the outer peripheral surface of the cutter roller, cutting device.

(2) The cutting device according to (1), wherein the cutting blade and the perforated blade intersect each other on an outer peripheral surface of the cutter roll.
(3) The cutting device according to (2), wherein the perforated blade has a discontinuous cutting edge at an intersecting position intersecting the cutting blade.
(4) In the perforated position where the perforated blade intersects with the cutting blade, the interval between the cutting edge of the cutting blade and the cutting edge of the perforating blade adjacent to the cutting blade is the same as that in the perforated blade. The cutting device according to (3), which is smaller than an interval between adjacent blade edges at a position other than the intersecting position.

(5) In the perforated blade, the cutting edge adjacent to the cutting edge of the cutting blade at an intersecting position intersecting the cutting blade is longer in the axial direction than the cutting edge of the other perforated blade. The cutting device according to (4).

  According to the present invention, the cutter roll includes, on its outer peripheral surface, both a cutting blade that cuts the object to be cut and a perforated blade that forms a perforation, which are formed to extend in the circumferential direction of the outer peripheral surface. Therefore, both the cutting of the object to be cut and the formation of perforations can always be performed stably and relatively easily with a single device. Further, space can be omitted and maintenance is easy as compared with the conventional apparatus using two devices.

FIG. 1 is a front view schematically showing an embodiment of a cutting device according to the present invention. However, the cutting blade and perforation blade of the cutter roll are omitted. FIG. 2 is a front view schematically showing a cutter roll in the cutting apparatus according to the present invention. FIG. 3 is a diagram schematically showing a state in which the outer peripheral surface of the cutter roll of FIG. 2 is developed. 4A is a schematic plan view of the perforated blade provided on the outer peripheral surface of the cutter roll of FIG. 2, FIG. 4B is a schematic side view of the perforated blade, and FIG. 4C is a view of the perforated blade and the cutting blade. It is typical sectional drawing. FIG. 5 is a plan view schematically showing a state in which the cutting apparatus according to the present invention is driven to cut the object to be cut. FIG. 6 is a plan view schematically showing a state of an intersecting position where a perforation blade and a cutting blade intersect. FIG. 7 is a diagram schematically illustrating a cutting object in which cutting and the formation of the sewing blade are performed at the intersection position where the perforation line and the cutting blade intersect and in the vicinity thereof. However, (a) is a diagram showing a state where the trim portion is not excluded, (b) is a diagram showing a state where the trim portion is excluded. FIG. 8 is a diagram schematically illustrating a state in which the outer peripheral surface of the cutter roll having a different cutting blade and perforated blade arrangement from that in FIG. 3 is developed. However, (a) the perforated blade is disposed on the center side in the roll width direction from the nearest cutting blade over the entire length, and (b) the perforated blade is disposed over the entire length in the roll width than the nearest cutting blade. Each is shown on the outer side of the direction.

1-7 shows one Embodiment of the cutting device which concerns on this invention, The cutting device 1 of this Embodiment is the cutter roll 2 which cut | disconnects the cutting target object 5, as shown in FIG. And a pair of upper and lower rolls with an anvil roll 3 having a smooth outer peripheral surface 3a, and a casing 4 on which these pair of rolls 2 and 3 are rotatably mounted about their axes. Then, the cutting object 5 is inserted by inserting the cutting object 5 between the cutter roll 2 and the anvil roll 3 while rotating the cutter roll 2 and the anvil roll 3 around the axis. Can be cut into a predetermined shape.
The cutting device 1 has a configuration in which the cutter roll 2 is provided on the upper side and the anvil roll 3 is provided directly below the cutter roll 2. The cutter roll 2 and the anvil roll 3 are respectively The rolls 2 and 3 are arranged so that the axes thereof are parallel to each other.

Examples of the cutting object 5 include films and sheets made of various synthetic resins such as polyethylene, non-woven sheets, and composite sheets in which non-woven sheets and synthetic resin films are joined together. It can be.
In this embodiment, the cutting object has a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-absorbing property disposed between the top sheet and the back sheet. It is a composite member for forming a so-called tape-type disposable diaper that is held by a wearer with a fastening tape and a target tape at the time of wearing.
More specifically, between the long liquid-permeable sheet made of nonwoven fabric to be the top sheet, and the long liquid-impermeable sheet made of nonwoven fabric or synthetic resin to be the back sheet, A long composite member having a certain width in which a plurality of the absorbers are arranged at certain intervals, that is, in a state before being cut into a tape-type disposable diaper having a predetermined outer shape (when deployed) It is supposed to be.

As shown in FIG. 1, the anvil roll 3 is formed in a cylindrical shape extending in a substantially horizontal direction with an outer peripheral surface 3 a formed smoothly, and at both ends in the axial direction of the anvil roll 3, A rotating shaft 3 b having a diameter smaller than the outer peripheral diameter of the anvil roll 3 is provided at a position that coincides with the axis of the anvil roll 3.
The anvil roll 3 is rotatably supported by bearings 6 and 6 attached to the casing 4 at both end sides in the axial direction, so that the anvil roll 3 is supported by the rotating shaft 3b. It is possible to rotate around the axis around the axis.

As shown in FIGS. 1 to 3, the cutter roll 2 is formed in a columnar shape extending in a substantially horizontal direction, and the outer diameter of the cutter roll 2 is provided at both ends in the axial direction of the cutter roll 2. A rotating shaft 2 b having a smaller diameter is provided at a position that coincides with the axis of the cutter roll 2.
As shown in FIG. 1, the cutter roll 2 is configured such that the rotary shaft 2 b is rotatably supported by bearings 7 and 7 attached to the casing 4 at both ends in the axial direction. It is rotatable around the axis around 2b.
In addition, roll bearers 2c and 2c rising from the outer peripheral surface 2a to the outer side in the radial direction of the cutter roll 2 are provided at both ends in the axial direction of the cutter roll 2 on the outer peripheral surface 2a of the cutter roll 2. It is provided along the outer peripheral surface 2a of the roll 2 and over the entire periphery of the outer peripheral surface 2a. Each of these roll bearers 2c, 2c is in a state where its peripheral surface is in pressure contact with the outer peripheral surface 3a of the anvil roll 3, and the distance between the outer peripheral surface 2a of the cutter roll 2 and the outer peripheral surface 3a of the anvil roll 3 In particular, between the blade edges 14 and 15 of the cutting blades 10 and 11 and the blade edges 28 to 31 of the perforated blades 20 to 23, which will be described later, provided on the outer peripheral surface 2a of the cutter roll 2, and the outer peripheral surface 3a of the anvil roll 3 The interval is kept constant.

The cutter roll 2 has a plurality of cutting blades 10 and 11 for cutting the cutting object 5 formed on the outer peripheral surface 2a so as to continuously extend in the circumferential direction of the outer peripheral surface 2a as a whole. And a plurality of perforation blades 20 to 23 for forming the perforation 8 in the cutting object 5. The cutting blades 10 and 11 cut the cutting object 5 while pressing the cutting object 5 against the outer peripheral surface 3 a of the anvil roll 3 as the cutter roll 2 rotates. On the other hand, the perforation blades 20 to 23 cut the perforation 8 into the cutting target 5 while pressing the cutting target 5 against the outer peripheral surface 3 a of the anvil roll 3 as the cutter roll 2 rotates. Form.
The cutting blades 10 and 11 and the perforated blades 20 to 23 are formed integrally with the outer peripheral surface 2 a of the cutter roll 2.

As shown in FIGS. 2 and 3, the cutting blades 10, 11 include base portions 12, 13 that rise from the outer peripheral surface 2 a of the cutter roll 2 to the outer side in the radial direction of the cutter roll 2, and the base portions 12, 13, 13, and blade edges 14 and 15 that are disposed on the distal end side of the cutter 13 and face the radially outer side of the cutter roll 2. Moreover, these base parts 12 and 13 and blade edge | tips 14 and 15 become the aspect extended long in the circumferential direction of this outer peripheral surface 2a as a whole along the outer peripheral surface 2a of the said cutter roll 2, and the outer peripheral surface 2a is continuously formed over the entire circumference.
The cutting blades 10 and 11 protrude from the outer peripheral surface of the cutter roll 2, that is, from the base ends of the base portions 12 and 13 (the surface of the outer peripheral surface 2 a of the cutter roll 2) to the cutting edges 14 and 15. Is formed substantially uniformly over the entire circumference of the outer peripheral surface 2 a of the cutter roll 2.

In this embodiment, the first cutting blade in which the cutting edge 14 is provided on the distal end side of the base 12 on both side portions in the axial direction (roll width direction) of the cutter roll 2 on the outer peripheral surface 2a of the cutter roll 2. 10 and the second cutting blade 11 provided with a blade edge 15 on the distal end side of the base portion 13 are arranged in a mutually independent manner with a predetermined interval therebetween.
In the case of this embodiment, for the cutting object 5 cut by the first and second cutting blades 10, 11, the first and second cutting blades 10, 11 of the cutting object 5 are used. A portion located between the two is a target object (product portion, that is, a disposable diaper) whose outer shape is to be formed. On the other hand, the part separated by the cutting | disconnection by these 1st and 2nd cutting blades 10 and 11 located in the outer side nearest the roll width direction rather than these 1st and 2nd cutting blades 10 and 11 Is a portion (trim portion) that is discarded without being used (see FIG. 7A).

Moreover, the 1st and 2nd cutting blades 10 and 11 are curving in the roll width direction according to the shape of the both-ends edge of the width direction of the disposable diaper which should be manufactured. At this time, the shape of the both end edges in the width direction of the disposable diaper is basically formed symmetrically with respect to an axis passing through the center in the width direction of the disposable diaper. Therefore, the first and second cutting blades 10 and 11 are symmetrical with respect to the central portion of the cutter roll 2 in the roll width direction.
Further, as shown in FIG. 3, the first and second cutting blades 10 and 11 in this embodiment are shaped in the circumferential direction of the outer peripheral surface 2 a of the cutter roll 2, that is, the cutting blades 10 and 11. The shape in the length direction is a shape in which two pattern shapes are connected. Therefore, the first and second cutting blades 10 and 11 can cut two disposable diapers to be manufactured with respect to the cutting object 5 every time the cutter roll 2 rotates once. It is like that.

As shown in FIG. 4C, the first and second cutting blades 10 and 11 of this embodiment are both substantially in the center in the width direction (roll width direction) of each cutting blade 10 and 11. The blade edge 14 and 15 is formed in the part, and the blade edge angle can be arbitrarily determined depending on the material and thickness of the object 5 to be cut, but is set to about 90 °. It is preferable to do.
Moreover, about the protrusion height and width | variety (width | variety of a base part) of the 1st and 2nd cutting blades 10 and 11, although it can set arbitrarily according to the raw material and thickness of the cutting target object 5, protrusion height The thickness can be about 10 mm, and the width can be about 5 mm. The protruding height and width (base width) of the first and second cutting blades 10 and 11 are basically the same as each other.

On the other hand, the perforation blades 20 to 23 are cut into the cutting object 5 at a predetermined interval to form the perforation 8, and extend long in the circumferential direction of the outer peripheral surface 2a of the cutter roll 2. Is formed.
The perforation blades 20 to 23 are set in advance on the base portions 24 to 27 rising from the outer peripheral surface 2a of the cutter roll 2 to the outer side in the radial direction of the cutter roll 2 and on the distal end sides of the base portions 24 to 27. It has a plurality of cutting edges 28 to 31 that are disposed intermittently at intervals and that face outward in the radial direction of the cutter roll 2. The bases 24 to 27 and the cutting edges 28 to 31 are formed along the outer peripheral surface 2a of the cutter roll 2, and the cutting edges 28 to 31 are all in the length direction of the perforated blades 20 to 23. The perforated blades 20-23 are arranged in series in the length direction.

As shown in FIGS. 4A to 4C, the perforation blade of this embodiment is the width direction (roll) of the perforation blade for any of the first to fourth perforation blades described later. The cutting edge is formed in a two-stage blade shape in which the cutting edge is formed at substantially the center in the width direction, and the cutting edge angle can be arbitrarily determined depending on the material and thickness of the cutting object 5, but is about 90 °. It is preferable to set the degree. Moreover, about the protrusion height (height from the base end (the surface of the outer peripheral surface 2a of the cutter roll 2) to the blade edge) of the perforation blade and the width of the perforation blade (base width), cutting is performed. Although it can set arbitrarily according to the raw material and thickness of the target object 5, it can be set as about 10 mm about protrusion height, and about 4.2 mm about width.
The perforation blade has a substantially uniform projection height from the outer peripheral surface 2a of the cutter roll 2 to the cutting edge over the entire length of the perforation blade, and the projection heights of the first and second cutting blades 10 and 11. It is formed at almost the same height.

The perforated blades 20 to 23 in this embodiment are manufactured with respect to the cutting object 5 every time the cutter roll 2 rotates once, similarly to the first and second cutting blades 10 and 11. The perforations 8 for two disposable diapers to be formed can be formed.
Further, the perforated blades 20 to 23 are disposed in the vicinity of both sides in the axial direction (roll width direction) of the cutter roll 2 on the outer peripheral surface 2a of the cutter roll 2, respectively, in an independent manner, A perforation having a series of lengths and shapes can be formed at predetermined positions with respect to the cutting object 5.

In the case of this embodiment, as shown in FIG. 3, two mutually independent perforation blades are provided in the vicinity of both sides of the cutter roll 2 in the roll width direction, for a total of four first to fourth. Perforation blades 20 to 23 are provided. That is, the first and third perforation blades 20 and 22 are disposed on the outer peripheral surface 2a of the cutter roll 2 on the first cutting blade 10 side, and the second and fourth sewing machines are disposed on the second cutting blade 11 side. Eye blades 21 and 23 are provided, respectively.
The first to fourth perforation blades 20 to 23 are each curved in the roll width direction according to the shape of the perforation to be formed on the cutting object 5. The second perforation edge 21 is the first perforation edge 20, the fourth perforation edge 23 is the third perforation edge 2, and the center of the cutter roll 2 in the roll width direction. Each of them is curved in the roll width direction so as to have a symmetrical shape with respect to the part.

The first and second perforated blades 20 and 21 are configured such that the cutter roll 2 is substantially half-rotated, and the first and second cutting blades 10 and 11 are one with respect to the cutting object 5. When cutting the eye pattern shape, basically, the perforation is formed in synchronization with the cutting of the first pattern shape.
On the other hand, the third and fourth perforation blades 22 and 23 are basically configured such that the cutter roll 2 further rotates substantially half and the first and second cutting blades 10 and 11 are the objects to be cut. When cutting the second pattern shape on the object 5, a perforation is formed in synchronization with the cutting of the second pattern shape.

Thus, the said 1st and 2nd cutting blades 10 and 11 and the said 1st-4th perforation blades 20-23 were provided together in the single cutter roll 2 for the said cutting | disconnection. Of course, it is possible to efficiently perform the cutting of the object 5 and the formation of the perforation for the cutting object 5 simultaneously. However, the cutting blades 10 and 11 and the perforation blades 20 to 23 and the above-mentioned The cutting object 5 is stably held between the anvil roll 3 and the outer peripheral surface 3a, and both the cutting of the cutting object 5 and the formation of the perforation 8 are performed more stably and accurately. It is also to be able to.
The viewpoints of the stability and accuracy of the cutting and perforation formation on the cutting object will be specifically described.

When cutting the object to be cut with the cutting blade of the cutter roll, it is necessary to press the cutting edge of the cutting blade toward the outer peripheral surface side of the anvil roll as the cutter roll rotates and cut it into the cutting object. There is. At this time, if the cutting edge of the cutting blade is pressed against the object to be cut, forces in various directions act on the object to be cut, so that the position of the cutter roll in the roll width direction of the cutter roll is shifted from a predetermined position. There is a possibility that the shape to be cut in the width direction is deformed due to wrinkles on the object to be cut.
Then, since the planned position where the cutting blade should cut with respect to the cutting object and the position where cutting is actually performed by the cutting blade are shifted, the shape of the cutting object after cutting is the originally planned shape. It becomes a situation where shape defects are likely to occur, such as different.

Therefore, in the present invention, the cutting blade and the perforated blade are provided together in a single cutter roll, and when cutting the object to be cut by the cutting blade, the cutting edge of the cutting blade and the outer peripheral surface of the anvil roll In addition to holding the cutting object performed between the cutting edges, the cutting object held between the cutting edge of the perforated blade and the outer peripheral surface of the anvil roll can be held.
Thereby, even if the cutting edge of the cutting blade is pressed at the time of cutting, the cutting object is stably held by each cutting edge of the cutting blade and the perforated blade, so that the position of the cutter roll in the roll width direction is maintained. It is possible to suppress the displacement from the predetermined position or the deformation of the shape in the width direction of the object to be cut due to wrinkles as much as possible, and a stable and accurate cutting can be realized.
In particular, since the perforated blade can hold the cutting object by cutting the cutting object intermittently with the rotation of the cutter roll, the cutting width of the cutter roll of the cutting object In addition, it is possible to effectively suppress displacement in the circumferential direction and deformation of the shape in the width direction.

In the case of this embodiment, the first and second cutting blades 10 and 11 and the first to fourth perforated blades 20 to 23 are provided together on a single cutter roll 2. When the cutting object 5 is cut by the first cutting blade 10, the cutting object 5 can be held between the cutting edge 14 of the first cutting blade 10 and the outer peripheral surface 3 a of the anvil roll 3. In addition, the cutting object 5 can be held between the cutting edges 28 and 30 of the first or third perforated blades 20 and 22 and the outer peripheral surface 3 a of the anvil roll 3.
Further, when the cutting object 5 is cut by the second cutting blade 11, the cutting object 5 is held between the cutting edge 15 of the second cutting blade 11 and the outer peripheral surface 3 a of the anvil roll 3. In addition to being able to be performed, the cutting object 5 can also be held between the cutting edges 29, 31 of the second or fourth perforated blades 21, 23 and the outer peripheral surface 3a of the anvil roll 3. Yes.
And when the said cutter roll 2 carries out a substantially half rotation and the said 1st and 2nd cutting blades 10 and 11 cut | disconnect the 1st pattern shape with respect to the said cutting | disconnection target object 5, these 1st pattern shapes are cut | disconnected. The cutting edges 14 and 15 of the first and second cutting blades 10 and 11 and the cutting edges 28 and 29 of the first and second perforated blades 20 and 21 are to be cut between the outer peripheral surface 3 a of the anvil roll 3. The object 5 can be held.
Further, when the cutter roll 2 further rotates approximately half and the first and second cutting blades 10 and 11 cut the second pattern shape with respect to the cutting object 5, these The cutting edges 14 and 15 of the first and second cutting blades 10 and 11 and the cutting edges 30 and 31 of the third and fourth perforation blades 22 and 23 are between the outer peripheral surface 3 a of the anvil roll 3. The cutting object 5 can be held.
In particular, the first to fourth perforation blades 20 to 23 are configured so that the cutting edges 28 to 31 of the perforation blades 20 to 23 intermittently cut into the cutting object 5 to hold the cutting object 5. The cutting object 5 can be held very stably. Thereby, the position shift of the cutting object 5 in the roll width direction and the circumferential direction of the cutter roll 2 and the deformation of the shape in the width direction are stably suppressed, and the first and second cutting blades 10 and 11 are suppressed. Can be cut accurately.

The first perforation blade 20 and the third perforation blade 22 located on the first cutting blade 10 side on the outer peripheral surface 2 a of the cutter roll 2 are the same on the outer peripheral surface 2 a of the cutter roll 2. It is formed in the same size. In this embodiment, the first perforation blade 20 and the third perforation blade 22 are discontinuous separated from each other because of the position and direction of the perforation to be formed. ing.
The first perforation blade 20 includes a base portion 24 and a cutting edge 28 provided on the distal end side of the base portion 24, and the third perforation blade 22 includes a base portion 26 and a base portion 26. And a cutting edge 30 provided on the distal end side.

In addition, although the first perforation blade 20 and the third perforation blade 22 are not continuous, the first perforation blade 20 in the rotation direction of the cutter roll 2 (in FIG. 3). The second end side 20b located on the upper side) and the first end side 22a located on the upstream side (lower side in FIG. 3) in the rotation direction of the cutter roll 2 in the third perforation blade 22. In the roll width direction of the cutter roll 2, the cutter roll 2 is disposed in a partially overlapping state.
Similarly, in the first perforation edge 20, the first end side 20 a located upstream in the rotation direction of the cutter roll 2 and the rotation direction of the cutter roll 2 in the third perforation edge 22. The second end side 22b located on the downstream side is arranged in a partially overlapping state in the roll width direction of the cutter roll 2.
Therefore, in the cutting object 5, the first perforation blade 20 and the third perforation blade 22 simultaneously contact with the rotation of the cutter roll 2, and the first perforation blade 20 A portion in which perforations are simultaneously formed by the third perforation blade 22 is generated.

Thus, the reason why the lengthwise ends of the first perforation blade 20 and the third perforation blade 22 are configured to overlap in the roll width direction of the cutter roll 2 is as follows. Because.
When the upstream end (the end of the first end 20a, 22a) of each perforation blade is newly cut into the object 5 to be cut, the outer peripheral surface 3a of the anvil roll 3 is compared with that after the cut once. Since the reaction force from the cutting object 5 pressed against is large, a relatively large stress acts on the end portions of the first end sides 20a, 22a of the perforated blades 20, 22, but the stress causes the portion The cutting edge becomes more exhausted than other parts or is easily damaged.
Moreover, when the 1st perforation blade and the 3rd perforation blade are discontinuous like this embodiment, the part in which these perforation blades do not exist in the roll width direction of the said cutter roll temporarily. If it exists, the cutting object positioned on the part where the perforation blade does not exist, particularly the cutting object pressed against the anvil roll by the amount of the perforation blade not present on the cutting edge of the first cutting blade. The stress accompanying the reaction force from the object tends to concentrate, and it is still easy to wear out or break easily.
Furthermore, when the ends of the first end sides 20a, 22a of the first and third perforation blades 20, 22 are newly cut into the cutting object 5, the cutting object 5 includes these perforations. Since the pressing force from the ends of the first end sides 20a and 22a of the blades 20 and 22 is newly applied, the shape of the cutting object 5 in the width direction tends to become unstable, and the cutter of the cutting object 5 There is a risk that the position of the roll 2 in the roll width direction itself is displaced from the predetermined position. If it does so, the cutting position by the 1st and 2nd cutting blades 10 and 11 may shift from the position which was initially planned, and the shape after cutting may become defective.
Therefore, in this embodiment, a part of both end portions in the length direction of the first perforation blade 20 and the third perforation blade 22 are overlapped in the roll width direction of the cutter roll 2. The cutting edges 28 and 30 at the end portions of the first end sides 20a and 22a, which are upstream of the first and third perforated blades 20 and 22, which are considered to be particularly worn out, are further provided in the first and second cutting edges. The stress acting on the cutting edges of the cutting blades 10 and 11 is dispersed to prevent the stress from concentrating. In addition, since the cutting object 5 can be firmly held by the cutting edges 28 and 30 of both the first perforation blade 20 and the third perforation blade 22, second and fourth perforation blades 21 described later. , 23 together with the holding effect of the cutting object 5, the cutting with the first cutting blade 10 and further with the second cutting blade 11 can be performed with higher accuracy.

On the other hand, the second perforation blade 21 and the fourth perforation blade 23 located on the second cutting blade 11 side on the outer peripheral surface 2 a of the cutter roll 2 are mutually connected on the outer peripheral surface 2 a of the cutter roll 2. Are formed in the same shape and size. In this embodiment, the second perforation blade 21 and the fourth perforation blade 23 are discontinuous separated from each other because of the position and direction of the perforation to be formed. .
The second perforation blade 21 includes a base portion 25 and a cutting edge 29 provided on the distal end side of the base portion 25, and the fourth perforation blade 23 includes a base portion 27 and a base portion 27. And a cutting edge 31 provided on the distal end side.

Further, the second perforation edge 21 and the fourth perforation edge 23 are not continuous, but the second perforation edge 21 is downstream in the rotation direction of the cutter roll 2 (in FIG. 3). The second end side 21b located on the upper side) and the first end side 23a located on the upstream side (lower side in FIG. 3) in the rotation direction of the cutter roll 2 in the fourth perforation blade 23. In the roll width direction of the cutter roll 2, the cutter roll 2 is disposed in a partially overlapping state. Similarly, in the second perforation edge 21, the first end side 21 a located upstream in the rotation direction of the cutter roll 2 and the rotation direction of the cutter roll 2 in the fourth perforation edge 23. The second end side 23 b located on the downstream side is disposed in a partially overlapping state in the roll width direction of the cutter roll 2.
Therefore, in the cutting object 5, the second perforation blade 21 and the fourth perforation blade 23 simultaneously come into contact with the rotation of the cutter roll 2, and the second perforation blade 21 A portion in which perforations are simultaneously formed by the fourth perforation blades 23 is generated.
As described above, the second perforation blade 21 and the fourth perforation blade 23 are configured to overlap a part of each lengthwise end portion in the roll width direction of the cutter roll 2. Basically, both end portions in the length direction of the first perforation blade 20 and the third perforation blade 22 described above are configured to overlap in the roll width direction of the cutter roll 2. It is the same. As a result, the end edges of the first end sides 21a and 23a, which are upstream of the second perforated blade 21 and the fourth perforated edge 23, and the cutting edge, particularly the cutting edge 15 of the second cutting edge 11 are shown. The stress that acts on the surface is dispersed to prevent the stress from concentrating. In addition, since the cutting object can be firmly held by the cutting edges 29, 31 of both the second perforated blade 21 and the fourth perforated blade 23, the first and third perforated blades 20, The cutting with the second cutting blade 11 and the first cutting blade 10 can be performed with higher accuracy, including the effect of holding the cutting object 5 by 22.

As shown in FIGS. 3 and 6, the first and third perforation blades 20 and 22 are the first cutting blade 10, and the second and fourth perforation blades 21 and 23 are the same. The second cutting blade 11 and the outer peripheral surface 2a of the cutter roll 2 intersect each other.
Here, in the present invention, when the cutting blade and the perforated blade "cross" on the outer peripheral surface of the cutter roll, a part of the perforated blade length direction and the length direction of the cutting blade on the outer peripheral surface of the cutter roll. And the perforation blade extends so that the cutting blade passes through (cuts across) the cutting blade from one end side in the width direction of the cutting blade to the other end side (or the cutting blade passes the perforation blade). The perforation blade is in contact with one end side in the width direction of the cutting blade and is not in the other end side. This also means a state in which one end side in the length direction of the perforated blade is in contact with one end side in the width direction of the cutting blade. In other words, on the outer peripheral surface of the cutter roll, the cutting blade and the perforation blade intersect with each other in a substantially cross shape, and one end side in the length direction of the perforation blade is in contact with one end side in the width direction of the cutting blade. It is a concept that includes a state where these cutting blades and perforation blades form a substantially T-shape when the contacted portion is viewed from the direction of the blade edge.

  Specifically, the first and third perforated blades 20, 22 have a roll width on the outer peripheral surface 2 a of the cutter roll 2 with the first end sides 20 a, 22 a being more than the first cutting blade 10. It is located on the outer side closest to the direction and extends linearly in the circumferential direction of the outer peripheral surface 2a of the cutter roll 2 by a certain length. And, from the portion in the vicinity of the central portion in the length direction of the first and third perforation blades 20, 22, the outer peripheral surface 2a of the cutter roll 2 is curved toward the inner side in the roll width direction, Each crosses the first cutting blade 10. Further, the first and third perforation blades 20 and 22 are located more than the first cutting blade 10 from the intersecting position with the first cutting blade 10 to the second end side 20b and 22b. The outer peripheral surface 2a of the cutter roll 2 is directed toward the center in the roll width direction, and finally extends linearly in the peripheral direction of the outer peripheral surface 2a of the cutter roll 2.

  The first and third perforation blades 20 and 22 are located on the outer side closest to the outer peripheral surface 2a of the cutter roll 2 in the roll width direction with respect to the first cutting blade 10. Since the portion, that is, the portion from the first end 20a, 22a to the position where the first cutting blade 10 intersects, forms a perforation with respect to the trim portion in the cutting object 5, holding the cutting object 5 The cutting blades 10 and 11 serve as a discarded blade that is used to reduce the load on the cutting edges 14 and 15.

On the other hand, the second and fourth perforation blades 21 and 23 are arranged in the roll width direction of the outer peripheral surface 2a of the cutter roll 2 such that the first end sides 21a and 23a are more than the second cutting blade 11, respectively. It is located on the nearest outer side and extends linearly in the circumferential direction of the outer peripheral surface 2a of the cutter roll 2 by a certain length. And, from the portion in the vicinity of the central portion in the length direction of the second and fourth perforation blades 21 and 23, curved toward the inner side in the roll width direction of the outer peripheral surface 2a of the cutter roll 2, Each of them intersects with the second cutting blade 11. Further, the second and fourth perforation blades 21 and 23 are located from the intersecting position with the second cutting blade 11 to the second end sides 21b and 23b than the first cutting blade 10. The cutter roll 2 has an aspect in which it extends toward the central portion in the roll width direction on the outer peripheral surface of the cutter roll 2, and finally linearly extends in the circumferential direction of the outer peripheral surface 2a of the cutter roll 2.
The second and fourth perforation blades 21 and 23 are positioned closer to the outer side in the roll width direction on the outer peripheral surface 2a of the cutter roll 2 than the second cutting blade 11 is. The portion, that is, the portion from the first ends 21 b and 23 b to the position where the second cutting blade 11 intersects forms a perforation with respect to the trim portion in the cutting object 5. Therefore, this part actually serves as a throwing blade used for holding the cutting object 5 and reducing the load on the cutting edges 14 and 15 of the cutting blades 10 and 11.

Here, as shown in FIG. 6, the first and third perforated blades 20 and 22 are discontinuous at the intersecting position with the first cutting blade 10. It has become.
Similarly, the cutting edges 29 and 31 of the second and fourth perforated blades 21 and 23 are discontinuous at the intersection position with the second cutting blade 11.
On the other hand, the first and second cutting blades 10 and 11 are also crossed with the first and third perforation blades 20 and 22 and the second and fourth perforation blades 21 and 23. The blade edges 14 and 15 are continuous, whereby the first and second cutting blades 10 and 11 are maintained in a state in which the blade edges 14 and 15 are continuous over the entire circumference of the outer peripheral surface 2a of the cutter roll 2. Has been.
At this time, the bases 24 to 27 of the first to fourth perforated blades 20 to 23 are substantially the same as the bases 12 and 13 of the intersecting first or second cutting blades 10 and 11. It is a connected aspect. Thereby, the cutting edges 28 and 30 of the first and third perforation blades 20 and 22 are placed on the cutting edge 14 of the first cutting blade 10 and the cutting edges 29 and 29 of the second and fourth perforation blades 21 and 23, respectively. 31 can be stably provided in a state of being as close as possible to the cutting edge 15 of the second cutting blade 11.

As described above, the cutting edges 28 to 31 of the first to fourth perforated blades 20 to 23 are discontinuous at the crossing position of the first or second cutting blades 10 and 11 for the following reason. is there.
That is, for example, when the first and third perforation blades 20 and 22 are continuous at the intersecting position with the first cutting blade 10, as a result, the cutting edges of the perforation blades 20 and 22 are obtained. 28 and 30 and the cutting edge 14 of the first cutting blade 10 are connected to each other, so that the crossing position is such that the cutting edge is substantially cross-shaped or substantially X-shaped in plan view. At this time, when the cutting edge having a substantially cross-shaped shape in plan view is cut into the cutting object 5, the cut formed in the cutting object 5 is also in a substantially cross-shaped shape in plan view. It becomes. However, the cut in a substantially cross shape or the like in plan view is in a state where the edge of the cutting object 5 is cut at the cut portion, and therefore when some external force acts on the cutting object 5. The cut object 5 or the manufactured product is easily torn or torn starting from the cut edge portion. The same can be said for the crossing positions of the second and fourth perforated blades 21 and 23 and the second cutting blade 11.
Therefore, in this embodiment, in order to prevent the cutting object 5 or the manufactured product from being torn or torn unexpectedly, the cutting edges of the first to fourth perforated blades 20 to 23 28 to 31 are discontinuous at the crossing position of the first or second cutting blades 10 and 11, and the cutting object 5 starting from the cut at the crossing position, or an unintended tear of the manufactured product, The destruction is prevented from occurring.

Furthermore, when the cutting edges 28 to 31 of the first to fourth perforated blades 20 to 23 are continuous at the position of intersection with the first or second cutting blades 10 and 11, this intersecting portion. In order to form the cutting edge, a high level of technology is required, so that a lot of labor and cost are required for the formation. In addition, when it is necessary to sharpen the sharpness of the cutting edge, it is difficult to polish the intersecting portion of the cutting edge because the shape is complicated.
In order to solve these problems, in this embodiment, the cutting edges of the first to fourth perforated blades are discontinuous at the intersecting position of the first or second cutting blade.

Moreover, as shown in FIG. 6, the said 1st-4th perforation blade 20-23 is the cutting | disconnection which cross | intersects in the crossing position with the said 1st or 2nd cutting blade 10 and 11 which cross | intersects. The interval between the cutting edges 14 and 15 of the blades 10 and 11 and the cutting edges 28 to 31 of the perforating edges 20 to 23 adjacent to the intersecting cutting edges 14 and 15 is the intersecting perforated edge 20. Are formed to be smaller than the interval between adjacent cutting edges at positions other than the crossing positions at ˜23.
Specifically, for example, the first perforation blade 20 is adjacent to the cutting edge 14 of the first cutting blade 10 and the first cutting blade 10 at a position intersecting the first cutting blade 10. The distance between the first perforated blade 20 and the cutting edge 28 (the cutting edge 14 of the first cutting blade 10 at the intersecting position and the first perforated blade 20 located closest to the cutting edge 14). The distance between the cutting edges 28) is formed to be smaller than the distance between the adjacent cutting edges 28, 28 at a position other than the intersecting position in the first perforated blade 20.
Therefore, in the cutting object 5, the edge 9 formed by cutting with the first cutting blade 10 and the position closest to the edge 9 formed with the first perforation blade 20 are located. The distance between a certain nearest perforation 8 (cut portion) is compared with the distance between adjacent perforations 8 formed by the cutting edges 28 and 28 of other portions of the first perforation blade 20. It becomes smaller (see FIGS. 7A and 7B). In this regard, the relationship between the cutting edge 30 of the third perforation edge 22 and the cutting edge 14 of the first cutting edge 10, the respective cutting edges 29, 31 of the second and fourth perforation edges 21, 23, and The relationship with the cutting edge 15 of the second cutting blade 11 is the same.

In addition, regarding the first to fourth perforation blades 20 to 23, at which position the interval between adjacent blade edges at a position other than the intersection position with the first or second cutting blade 10 or 11 is any position. But it is the same interval.
Moreover, in this embodiment, the said 1st-4th perforation blades 20-23 are between the adjacent blade edges in positions other than the crossing position with the said 1st or 2nd cutting blades 10 and 11. The intervals are almost the same for all perforated edges.
About the 1st-4th perforation blades 20-23, the space | interval between the adjacent blade tips in positions other than the crossing position with the said 1st or 2nd cutting blades 10 and 11 should be manufactured finally. It can be arbitrarily set depending on the type and size of the object, the material and thickness of the object 5 to be cut, and the like. For example, when the article to be manufactured is a disposable diaper for a low birth weight infant, the interval between adjacent blade edges at a position other than the crossing position can be about 1 mm.
On the other hand, at this time, with respect to the first to fourth perforation blades 20 to 23, the cutting edges 14 and 15 of the cutting blades 10 and 11 at the intersecting positions with the adjacent first or second cutting blades 10 and 11, The distance between the cutting edge and the cutting edges 28 to 31 of the adjacent perforation blades is preferably about 0.5 to 0.8 mm.

Thus, with respect to the perforated blade, at the intersection position with the intersecting cutting blade, the interval between the cutting edge of the cutting blade and the cutting edge of the perforated blade adjacent to the cutting blade is determined in the perforated blade. The reason why it is smaller than the interval between adjacent blade edges at a position other than the crossing position is to facilitate cutting the perforation by hand.
That is, in products such as disposable diapers, when the perforation is cut by hand, it is necessary to cut the edge toward the perforation located closest to the edge of the product. If the distance to the perforation is long, the distance to cut the product by hand becomes long, so that the act of cutting itself becomes troublesome, and it may not cut well in the desired direction, which makes it very difficult to handle.
The distance from the edge of the product to the nearest perforation is the distance between the cutting edge of the cutting blade and the cutting edge of the perforation blade adjacent to the cutting blade at the intersection where the perforation blade and the cutting blade intersect. Therefore, it is indispensable for improving the handling property to appropriately set the interval.
Therefore, in this embodiment, about the said 1st-4th perforation blade 20-23, of the said cutting blade 10 and 11 in the cross | intersection position with the said 1st or 2nd cutting blade 10 and 11 which cross | intersects. The distance between the cutting edges 14 and 15 and the cutting edges 28 to 31 of the perforated edges 20 to 23 adjacent to the cutting edges 10 and 11 is adjusted, as shown in FIG. While the length between the edge 9 of the knives 9 and the nearest perforation 8 is set to a size that can secure a strength not to be cut during the conveyance of the object to be cut and the subsequent process or the conveyance as a product, The perforation can be cut relatively easily by hand.

Further, each of the first to fourth perforation blades 20 to 23 intersects with the intersecting first or second cutting blades 10 and 11 at the intersecting first or second cutting. The cutting edge adjacent to the cutting edges 14 and 15 of the cutting edges 10 and 11 has an axial length of the perforation blade (perforation blade length direction) more than the other cutting edges of the intersecting perforation blades 20 to 23. Largely formed.
Specifically, for example, the first perforated blade 20 is adjacent to the cutting edge 14 of the first cutting blade 10 at an intersecting position intersecting the first cutting blade 10 as shown in FIG. The cutting edge 28 of the first perforation blade 20 is formed so that the length in the length direction of the first perforation blade 20 is larger than the other cutting edges of the first perforation blade 20.
Therefore, as shown in FIG. 7B, in the cutting object 5, the first perforation blade 20 located at the position closest to the edge formed by being cut by the first cutting blade 10. The perforation 8 (cut portion) closest to the end edge 9 formed by the above is formed longer than the other perforations 8 formed by the other first perforation blades 20. In this regard, the second perforation edge closest to the cutting edge 14 of the first cutting edge 10 at the intersecting position and the second nearest edge 15 of the second cutting edge 11 at the intersecting position. The same applies to the cutting edges of the fourth perforated blades 21 and 23.

Thus, with respect to the perforated blade, the cutting edge of the perforated blade adjacent to the cutting edge of the intersecting cutting blade at the intersecting position intersecting with the cutting blade is more in the length direction of the perforated blade than the other cutting edges. The reason for increasing the length is to make it easier to cut a series of perforations formed by each perforation blade by hand.
That is, in a product such as a disposable diaper, for each series of perforations formed with each perforation blade, once the interval from the end edge of the product to the nearest perforation is cut, the starting point for cutting the perforation If the product is cut by hand to the next perforation at that time, it is easier to grasp the product with your hand or fingers if the area to be pinched with a finger is large, and the product should be directed toward the next perforation. It becomes easier to apply force in the direction of cutting. If the perforation closest to the end edge of the product is long, the gap between the end perforation and the perforation closest to the end edge is cut with a finger near the perforation in the product. Since the pinching range can be made relatively large, the product can be easily cut toward the next perforation (see FIG. 7B).

At this time, the perforation closest to the edge of the product is the cutting edge of the perforated edge adjacent to the cutting edge of the intersecting cutting edge at the crossing position with the cutting edge.
Therefore, in this embodiment, at the intersecting position of the first to fourth perforating blades 20 to 23 and the intersecting first or second cutting blades 10 and 11, the cutting blades 10 and 11. For the cutting edges 28 to 31 of the perforation blades 20 to 23 adjacent to the cutting edges 14 and 15, by securing the length of the perforation blade in the length direction, a range to be pinched with a finger when cutting the perforation 8 is secured. In this way, a series of perforations 9 formed by each perforation blade can be easily cut by hand.

By the way, the 1st-4th perforation blades 20-23 in this embodiment are the cutting edges 14, 15 of the cutting blades 10, 11 at the crossing positions with the first or second cutting blades 10, 11. The cutting edge other than the cutting edge adjacent to is in the following manner.
That is, in the first to fourth perforation blades 20 to 23, the outer periphery of the cutter roll 2 for the cutting edge that is not adjacent to the cutting edge of the first or second cutting blade 10 or 11 at the intersecting position. The length in the longitudinal direction of the perforated blade is different between a portion extending linearly in the circumferential direction of the surface 2a and a portion curved in a direction intersecting the circumferential direction of the outer peripheral surface 2a. That is, in the portion other than the intersection position, the length in the length direction of the perforation blades 28 to 31 of the perforation blades 20 to 23 extends linearly in the circumferential direction of the outer peripheral surface 2 a of the cutter roll 2. The cutting edge located in the part which is curving in the direction which cross | intersects the circumferential direction of this outer peripheral surface is longer than the cutting edge located in the part which exists.

The reason for this is to eliminate the problems caused by the orientation of the fibers of the nonwoven fabric that forms part of the composite member that is the cutting object 5, and efficiently cut the fibers constituting the nonwoven fabric. This is because the perforation is stably formed.
Specifically, in the nonwoven fabric in the composite member that is the cutting object 5, the fibers constituting the nonwoven fabric are oriented in the conveying direction MD of the cutting object 5, that is, in the length direction of the cutting object 5. Since it is normal, when the product formed from the cutting object 5 is manually broken along the perforation, the product can be broken relatively easily in the direction along the fiber orientation direction of the nonwoven fabric. However, when the product is broken in a direction intersecting with the fiber orientation direction of the nonwoven fabric, it is necessary to break the product while cutting the fiber, so that it is harder to break than when breaking along the fiber orientation direction. Therefore, among the perforations formed by the first to fourth perforation blades 20 to 23, the perforation of the portion that is curved and extends in the width direction of the product is in a direction that intersects the orientation direction of the fibers. Since it is formed to face, there is a possibility that it is difficult to break this part by hand.
Therefore, in this embodiment, the first to fourth perforated blades 20 to 23 are located at the edge that is curved in the direction intersecting the circumferential direction of the outer peripheral surface 2a of the cutter roll 2. Sets the length of the perforation blade in the longitudinal direction to be relatively long so that the perforation length can be formed longer with respect to the object 5 to be cut, and the product is handed along the perforation. It is easy to break.

The length in the length direction of the perforated blades at the cutting edges 28 to 31 of the first to fourth perforated blades 20 to 23 is the type and size of the object to be finally manufactured, and the object to be cut. It can be arbitrarily set depending on the material, thickness, etc. For example, when the article to be manufactured is a disposable diaper for a low birth weight infant, the length in the length direction of the perforated blade at the cutting edge extends linearly in the circumferential direction of the outer peripheral surface 2 a of the cutter roll 2. The portion can be about 1.5 mm, and the cutting edge of the portion curved in the direction intersecting the circumferential direction of the outer peripheral surface 2a can be about 2 mm.
At this time, the cutting edges 28 to 31 adjacent to the cutting edges 14 and 15 of the cutting blades 10 and 11 at the intersecting positions intersecting the cutting blades 10 and 11 with respect to the first to fourth perforation blades 20 to 23. The length in the length direction is preferably about 2 to 3 mm.

As shown in FIG. 5, the cutting device 1 having the above-described configuration rotates the cutter roll 2 and the anvil roll 3 around the respective axes in directions opposite to each other, and the cutter roll 2 and the anvil roll 3. In between, the cutting object 5 is inserted from the entrance side of the cutting device 1. Thereby, the said cutting | disconnection target object 5 is predetermined by the 1st and 2nd cutting blades 10 and 11 provided in the outer peripheral surface 2a of the said cutter roll 2, ie, in this embodiment, is predetermined. The tape-type disposable diaper is cut into the shape of both end edges in the width direction. On the other hand, simultaneously with the cutting with the first and second cutting blades 10, 11, the perforation of the cutting object 5 with the first and second perforation blades 20, 21, Alternatively, the perforation is formed by the third and fourth perforation blades 22, 24.
Thereafter, the cutting object 5 is formed in a state in which a plurality of end edges in the width direction formed in the shape of both end edges in the width direction of the predetermined disposable diaper are connected to each other at a predetermined position. In a state where is formed, it is led out from the exit side of the cutting device 1.

At this time, the cutting device 1 is formed on the outer peripheral surface 2a of the cutter roll 2 so as to extend in the circumferential direction of the outer peripheral surface 2a. Since both the perforation blades 20 to 24 to be formed are provided, it is possible to easily perform both the cutting of the cutting object 5 and the formation of the perforation with a single device.
Further, since the cutting blades 10 and 11 and the perforation blades 20 to 23 are all formed on the outer peripheral surface 2a of the same cutter roll 2, cutting and perforation are formed using two devices. There is no need to perform precise control of the rotational speed and the relative position of the cutting blade and the perforated blade as in the case of the conventional case where they are performed separately. As a result, it is possible to realize extremely stable and precise cutting and perforation formation on the object 2 to be cut, and it is easy to handle the entire apparatus because no complicated control or adjustment is required as in the prior art. Maintenance is also very easy.
Furthermore, since both the cutting of the cutting object 5 and the formation of the perforation can be performed with a single device, space saving can be achieved compared to the conventional case where two devices are used. .

In the embodiment, the first cutting blade 10 and the first and third perforation blades 20 and 22, and the second cutting blade 11 and the second and fourth perforation blades 21 and 23 are either Also, the outer peripheral surface 2a of the cutter roll 2 intersects in a substantially cross shape.
However, the cutting blade and the perforation blade are not substantially cross-shaped, that is, one end side in the length direction of the perforation blade is in contact with one end side in the width direction of the cutting blade, and the contacted portion is viewed from the blade edge direction. In some cases, these cutting blades and perforation blades may intersect with each other to form a substantially T-shape.

In the embodiment, the first cutting blade 10 and the first and third perforation blades 20 and 22, the second cutting blade 11 and the second and fourth perforation blades 21 and 23 are Both of them intersect on the outer peripheral surface 2a of the cutter roll 2, but the cutting blade and the perforated blade need not necessarily intersect.
For example, as shown in FIG. 8 (a), the perforation blades 36, 37 on the outer peripheral surface 35a of the cutter roll 35 are longer than the nearest cutting blades 38, 39 over the entire length of the perforation blade. It is possible to adopt a mode in which the cutting blades 38 and 39 are not intersected at all by being disposed on the center side (inward side) in the roll width direction.
Alternatively, as shown in FIG. 8 (b), the perforation blades 46 and 47 on the outer peripheral surface 45 a of the cutter roll 45 are longer than the nearest cutting blades 48 and 49 over the entire length in the length direction of the perforation blade. It can be set as the aspect which is arrange | positioned in the outer side nearest the roll width direction, and does not cross | intersect the cutting blades 48 and 49 at all. However, since all of the perforated blades 46 and 47 in the case of FIG. 8B are cut into the trim part side of the object to be cut, the perforated blades 46 and 47 serve as a disposal blade substantially. Will be fulfilled.
In addition, in the case of what is shown to Fig.8 (a) and FIG.8 (b), all the perforation blades become the structure arrange | positioned continuously over the perimeter of the outer peripheral surface of a cutter roll.

Thus, even in the embodiment shown in FIGS. 8A and 8B, the cutting object can be held by each cutting blade and each perforation blade at the time of cutting. Both the cutting by the cutting blade and the formation of the perforation by the perforation blade can be realized with more stable and precise cutting and the formation of the perforation.
In the case shown in FIGS. 8 (a) and 8 (b), both the cutting of the object to be cut and the formation of perforations are always performed stably and simply, as in the above embodiment. It is easy to handle as a whole device and maintenance is easy because there is no need for complicated control and adjustment as in the past. Of course, basic effects such as certain points can be obtained.

In the embodiment, the perforation blades 20 to 23 are configured so that the cutting edges 28 to 31 are discontinuous at the crossing positions where the cutting blades 10 and 11 intersect. It is good also as a state connected with the cutting-edge of a cutting blade continuously in the crossing position with a cutting blade.
However, it is preferable that the perforated blade is discontinuous at the crossing position with the cutting blade because the advantageous effects as described above can be obtained.

In the embodiment, the perforated blades 20 to 23 are adjacent to the cutting edges 14 and 15 of the cutting blades 10 and 11 and the cutting blades 10 and 11 at the intersecting positions intersecting the cutting blades 10 and 11. The interval between the perforated blades 20 to 23 is smaller than the interval between adjacent blade edges at a position other than the intersecting position in the perforated blades 20 to 23.
However, the distance between adjacent cutting edges in the perforated blade can be arbitrarily set, and does not necessarily have to be changed between the intersection position and the other positions.

In the embodiment, the perforated blades 20 to 23 have the cutting edges adjacent to the cutting edges 14 and 15 of the cutting blades 10 and 11 at the crossing positions intersecting with the cutting blades 10 and 11. The length in the axial direction was formed larger than the cutting edge of the eye blade.
However, the axial length of each cutting edge in the perforated blade can be arbitrarily set, and does not necessarily have to be changed between the intersection position and other positions.

In the said embodiment, although the composite member which is a disposable diaper whose final product is an absorbent article was used as the cutting object 5, the cutting object can be various sheets or films.
Further, when the final product is an absorbent article, a composite member for producing other than disposable diapers, for example, a composite member for producing various absorbent articles such as sanitary napkins, panty liners, incontinence pads, urine collecting pads, etc. It may be.

DESCRIPTION OF SYMBOLS 1 Cutting device 2,35 Cutter roll 2a Outer peripheral surface of cutter roll 3 Anvil roll 3a Outer peripheral surface of anvil roll 5 Cutting object 10, 11, 38, 39, 48, 49 Cutting blade 14, 15 Cutting blade edge 20-23 , 36, 37, 46, 47 Perforated blade 28-31 Perforated edge

Claims (3)

A cutter roll for cutting the cutting object and an anvil roll having a smooth outer peripheral surface, and the cutting object is placed between the cutter roll and the anvil roll while rotating the cutter roll and the anvil roll. A cutting device that cuts the object to be cut into a predetermined shape by loading,
The cutter roll has a cutting blade for cutting the cutting object formed on the outer peripheral surface so as to continuously extend in the circumferential direction of the outer peripheral surface as a whole, and extends in the circumferential direction of the outer peripheral surface as a whole. A perforation blade that is formed and forms perforations by cutting at a predetermined interval with respect to the object to be cut;
The cutting blade is formed continuously along the outer peripheral surface of the cutter roll, and the perforation blade is formed in the radial direction of the cutter roll. The cutting edge facing outward is formed at a predetermined interval along the outer peripheral surface of the cutter roll ,
The cutting blade and the perforated blade intersect at the outer peripheral surface of the cutter roll,
The perforated blade is a cutting device in which a cutting edge is discontinuous at an intersecting position intersecting the cutting blade . The perforation blade has an interval between the cutting edge of the perforation blade adjacent to the cutting blade at a crossing position where the perforation blade intersects the cutting blade other than the crossing position of the perforation blade. The cutting device according to claim 1 , wherein the cutting device is smaller than an interval between adjacent blade edges at the position of. The perforation blade cutting edge adjacent to the cutting edge of the cutting blade at the intersection that intersects the cutting blade, a large axial length than the cutting edge of the other perforation blade to claim 1 or claim 2 The cutting device as described.

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