WO2024063074A1 - Dispositif de coupe - Google Patents

Dispositif de coupe Download PDF

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Publication number
WO2024063074A1
WO2024063074A1 PCT/JP2023/034029 JP2023034029W WO2024063074A1 WO 2024063074 A1 WO2024063074 A1 WO 2024063074A1 JP 2023034029 W JP2023034029 W JP 2023034029W WO 2024063074 A1 WO2024063074 A1 WO 2024063074A1
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WO
WIPO (PCT)
Prior art keywords
holding
cutting
cutting device
anvil
sheet
Prior art date
Application number
PCT/JP2023/034029
Other languages
English (en)
Japanese (ja)
Inventor
秀幸 中村
奨 伊藤
梓 小西
Original Assignee
株式会社瑞光
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社瑞光 filed Critical 株式会社瑞光
Publication of WO2024063074A1 publication Critical patent/WO2024063074A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means

Definitions

  • the present invention relates to a cutting device that longitudinally conveys a sheet extending in a predetermined longitudinal direction and cuts the sheet in a direction perpendicular to the longitudinal direction.
  • Patent Document 1 As the above-mentioned apparatus, the manufacturing apparatus described in Patent Document 1 has been known.
  • the manufacturing apparatus described in Patent Document 1 includes a rotating body that is rotatable about a rotating shaft, a plurality of work holding parts attached to the rotating body in a circumferential direction centered on the rotating shaft, and a plurality of receiving blades attached to a rotating body while being respectively disposed between two adjacent work holding parts; and a cutter that cuts a continuous body (sheet) of the absorbent body between the plurality of receiving blades. Comes with a roll.
  • the workpiece holding part has a holding surface arranged toward the outside in the radial direction of a circle centered on the rotation axis, and a plurality of intake holes formed in the holding surface and connected to a negative pressure source. .
  • a suction force for holding the absorbent body is generated on the holding surface by a negative pressure source.
  • the continuous body of the absorbent body is delivered to the workpiece holder at a predetermined position in the rotational direction around the rotational axis, and is conveyed by the rotation of the rotating body. Further, as the rotating body rotates, the receiving blade sequentially moves to a position facing the cutter roll, and the continuous body of the absorbent body is cut between the receiving blade and the cutter roll, thereby manufacturing the absorbent body.
  • the continuous body of the absorbent body is held under tension by a plurality of workpiece holding parts. Therefore, when the continuous body of the absorbent body is cut by the cutter roll, the cut end of the absorbent body receives a tensile force toward the work holding part that holds the absorbent body.
  • a space is provided between the receiving blade and the work holding part in the circumferential direction, and the cut end of the absorbent body can move freely within this space due to the contraction force generated therein.
  • the impact causes a part of the cut end of the absorbent body to be folded back and adsorbed to the work holding part, or the folded area becomes so large that the absorbent body itself may detach from the work holding part.
  • An object of the present invention is to provide a cutting device that can suppress folding or separation of a sheet after cutting.
  • a first invention provides a cutting device that conveys a sheet extending in a longitudinal direction in the longitudinal direction and cuts the sheet in a direction perpendicular to the longitudinal direction, the cutting device being centered around a rotation axis.
  • a rotating body rotatable in a predetermined rotational direction; and a holding surface for holding the sheet and facing outward in the radial direction of a circle centered on the rotational axis, the holding surface being configured to rotate in the rotational direction.
  • a plurality of holding parts attached to the rotating body so as to be lined up in a circumferential direction centered on an axis; and a plurality of holding parts each provided between two holding parts adjacent to each other in the circumferential direction among the plurality of holding parts.
  • a cutting device comprising: a regulating member extending inward and regulating contact with the side surface facing in the circumferential direction.
  • the present invention makes it possible to prevent the sheet from folding back or coming off after cutting.
  • FIG. 2 is a front view of the cutting device according to the first embodiment of the present invention, in which only the upright plate of the fixed member is shown in virtual lines, and the configuration of the radially inner region of the support tube is not illustrated.
  • FIG. 2 is a diagram showing the processing performed by the cutting device of FIG. 1, in which the upper row shows a developed view of the cutting device as seen from the outside in the radial direction around the rotation axis, and a diagram showing the disposable diaper with imaginary lines; the lower row shows the upper row. It is a figure showing the state of the disposable diaper in the process.
  • FIG. 2 is an enlarged view of a portion indicated by III in the cutting device of FIG. 1 .
  • 4 is a cross-sectional view taken along line IV-IV in FIG. FIG.
  • FIG. 2 is a diagram corresponding to FIG. 2 of a cutting device according to a second embodiment of the present invention.
  • the cutting device 1 conveys a continuous body 50A (sheet) of disposable diapers 50 extending in the longitudinal direction, and also cuts the continuous body 50A orthogonally to the longitudinal direction.
  • the disposable diaper 50 is cut into disposable diapers 50 by cutting in the same direction as shown in FIG.
  • the configuration of the disposable diaper 50 will be explained with reference to FIG. 2.
  • the disposable diaper 50 has a waist part 50a that is placed around the wearer's waist when worn, a crotch part 50b that extends from the front abdomen to the back of the waist part 50a, and a side end of the front abdomen and a side end of the back. and a side seal part 50c that joins the parts.
  • portions corresponding to a plurality of disposable diapers 50 are connected in the lateral direction (longitudinal direction) at the side ends thereof.
  • the disposable diaper 50 also includes a waist elastic member 50d for tightening the front abdomen and rear back around the wearer's waist, and a body-fitting elastic member for bringing the front abdomen and rear back into close contact with the wearer's abdomen and buttocks. 50e, and leg elastic members 50f for tightly fitting the crotch area around the wearer's legs.
  • the waist elastic member 50d and the body fit elastic member 50e have elasticity in the longitudinal direction of the continuous body 50A (left-right direction in FIG. 2).
  • the leg elastic member 50f has elasticity in the longitudinal direction of the continuous body 50A and in the width direction (vertical direction in FIG. 2) perpendicular thereto.
  • the cutting device 1 conveys the continuous body 50A in the longitudinal direction while holding the continuous body 50A in a state where the elastic members 50d to 50f are stretched in the longitudinal direction. Further, the cutting device 1 cuts the continuous body 50A in the width direction, turns the cut disposable diaper 50 by 90 degrees, and delivers it to a downstream device.
  • the configuration of the cutting device 1 will be described below with reference to FIGS. 1 and 2.
  • the cutting device 1 has a receiving position P1 for receiving the continuous body 50A from an upstream device (for example, a device for forming the side seal portion 50c), and a receiving position P1 for receiving the continuous body 50A from an upstream device (for example, a device for forming the side seal portion 50c), and a receiving position P1 for receiving the continuous body 50A in a direction perpendicular to the longitudinal direction thereof. It has a cutting position P2 for cutting, and a delivery position P3 for delivering the cut disposable diaper 50 to a downstream device (for example, a device for folding the disposable diaper 50).
  • a downstream device for example, a device for folding the disposable diaper 50.
  • the cutting device 1 transports the continuous body 50A in its longitudinal direction from the receiving position P1 to the cutting position P2, and transports the disposable diaper 50 from the cutting position P2 to the delivery position P3. Specifically, the cutting device 1 conveys the continuous body 50A and the disposable diaper 50 in a predetermined rotation direction D1 centered on the rotation axis C1. Further, the cutting device 1 rotates the disposable diaper 50 around a rotation axis C2 (see FIG. 2) that is orthogonal to the rotation axis C1 between the cutting position P2 and the delivery position P3.
  • the cutting device 1 includes a rotating body 2 rotatable in the rotation direction D1, a plurality of holding parts 3 attached to the rotating body 2, and a plurality of holding parts 3 each provided between two mutually adjacent holding parts 3.
  • a plurality of restricting members 6 (see FIG. 3) that restrict movement inward in the direction of 4)).
  • the rotating body 2 is configured to be rotatable in a rotation direction D1 around a rotation axis C1.
  • the rotary body 2 includes a rotary drive shaft 2a that is rotatably supported by a support member (not shown) provided at a location where the cutting device 1 is installed, and a rotary drive shaft 2a that is rotatably supported around a rotary shaft C1. It includes a rotary plate 2b fixed to the tip, a support cylinder 2c extending from the rotary plate 2b in a direction away from the rotary drive shaft 2a, and a plurality of suction boxes 2d fixed to the outer peripheral surface of the support cylinder 2c. .
  • the rotary drive shaft 2a rotates in a rotation direction D1 in response to driving of a drive motor M1 connected to the rotary drive shaft 2a.
  • the rotary plate 2b is a disc-shaped member extending in a direction perpendicular to the rotary drive shaft 2a.
  • the support cylinder 2c extends in a direction opposite to the rotary drive shaft 2a from a position radially inside the peripheral edge of the rotary plate 2b.
  • the plurality of suction boxes 2d are attached to each of the plurality of holding parts 3, and the holding parts It is located in the same position as 3. Since each suction box 2d has a similar configuration, the configuration of one suction box 2d will be described below.
  • the suction box 2d includes a hollow box main body 2d1 having a negative pressure chamber 2d13, and a pair of bearings 2d2 that rotatably support a swing drive shaft 3b, which will be described later, with respect to the box main body 2d1.
  • Through-holes 2d11 are formed in a pair of radially intersecting wall portions of the box body 2d1, and a pair of bearings 2d2 are provided in these through-holes.
  • an opening 2d12 that opens the negative pressure chamber 2d13 is formed in a wall portion of the box body 2d1 facing away from the rotational drive shaft 2a.
  • the plurality of holding parts 3 each have a holding surface 3a1 for holding the disposable diaper 50 and its continuous body 50A, and are attached to the rotating body 2 so that the holding surfaces 3a1 are aligned in the circumferential direction. Since the plurality of holding sections 3 each have a similar configuration, the configuration of one holding section will be described below.
  • the holding part 3 includes a holding pad 3a for holding the disposable diaper 50 and its continuous body 50A, a swing drive shaft 3b extending radially inward from the holding pad 3a, and a radially inner end of the swing drive shaft 3b.
  • a cam mechanism 3c provided in the cam mechanism 3c is provided.
  • the holding pad 3a is a hollow member having a negative pressure chamber 3a2 to which negative pressure is supplied from the suction box 2d. Further, the holding pad 3a has a holding surface 3a1 facing outward in the radial direction and for holding the disposable diaper 50, and a plurality of suction holes 3a3 (see FIG. 2) formed in the holding surface 3a1. As shown in FIG. 2, the holding surface three a1 has a shape capable of placing the area of the disposable diaper 50 excluding the both side seal portions 50c and the lower end portion of the crotch portion 50b.
  • the holding surface 3a1 has a shape corresponding to a region sandwiched between two chords in a circle centered on the rotation axis C2 when viewed along the rotation axis C2 (viewpoint in FIG. 2). has.
  • the plurality of suction holes three a3 are arranged in a region corresponding to the shape of the disposable diaper 50 placed on the holding surface three a1.
  • the region where the plurality of suction holes three a3 are provided includes a region extending along the waist portion 50a and a region extending along the crotch portion 50b.
  • the rotation drive shaft 3b is attached to the rotating body 2, in this embodiment, the suction box 2d, so that it can rotate around the rotation axis C1 and can rotate around the rotation axis C2. installed.
  • the swing drive shaft 3b extends from the holding pad 3a to the radially inner position of the support tube 2c through the through hole 2d11 of the suction box 2d and the through hole 2c1 of the support tube 2c.
  • the midway portion of the swing drive shaft 3b is attached to the suction box 2d in a state where it can rotate around the swing axis C2 by a bearing 2d2 provided in the suction box 2d, and cannot rotate around the rotation axis C1. .
  • the rotation drive shaft 3b has a connection passage 3b1 that connects the negative pressure chamber 3a2 of the holding pad 3a and the negative pressure chamber 2d13 of the suction box 2d.
  • connection passage 3b1 By supplying negative pressure to the negative pressure chamber 3a2 through the connection passage 3b1, suction force is applied to the suction hole 3a3 (holding surface 3a1).
  • suction force is applied to the suction hole 3a3 (holding surface 3a1).
  • airtightness between the swing drive shaft 3b and the box body 2d1 is ensured by the bearing 2d2.
  • the cam mechanism 3c is provided inside the support tube 2c in the radial direction.
  • the cam mechanism 3c includes an arm 3c1 extending from the swing drive shaft 3b in a direction perpendicular to the swing axis C2, and a cam follower 3c2 extending radially inward from the tip of the arm 3c1.
  • the fixing member 7 includes an upright plate 7a that faces the rotary plate 2b with the suction box 2d in between, and a protrusion 7b that protrudes from the upright plate 7a so as to be inserted into the support tube 2c. , is equipped with.
  • FIG. 1 for convenience of explanation, only the upright plate 7a of the fixing member 7 is shown with imaginary lines, and the configuration of the radially inner region of the support tube 2c is not illustrated.
  • the upright plate 7a has a communication groove 7a1 that opens toward the suction box 2d and extends in a predetermined angular range around the rotation axis C1.
  • the communication groove 7a1 extends from a position upstream of the cutting position P2 in the rotational direction D1 of the rotating body 2 (in this embodiment, a rotational position where the suction force is generated at the receiving position P1) to a position downstream of the cutting position P2. (In this embodiment, the rotational position where the suction force is generated is the delivery position P3).
  • the communication groove 7a1 is arranged at a position in the radial direction that overlaps the opening 2d12 of the suction box 2d described above from the viewpoint of the rotation axis.
  • the negative pressure caused by the suction source V connected to the communication groove 7a1 is It is supplied to the negative pressure chamber 3a2 of the holding pad 3a through the communication groove 7a1, the opening 2d12, the negative pressure chamber 2d13, and the connection passage 3b1, and a suction force is applied to the suction hole 3a3 (holding surface 3a1).
  • a suction force is applied to the holding surface 3a1 of the holding section 3 in the rotation range from the receiving position P1 to the delivery position P3.
  • the protrusion 7b has a cam groove 7b1 that opens radially outward and extends circumferentially to engage with the cam follower 3c2 of the cam mechanism 3c.
  • the cam groove 7b1 is formed on the protrusion 7b around the entire circumference of the rotation axis C1.
  • the cam groove 7b1 has a shape (a shape that bends in the axial direction of the rotation axis C1 as shown in FIG. 4) for rotating the holding pad 3a substantially 90° around the rotation axis C2 in response to the rotation of the holding part 3 from the cutting position P2 to the delivery position P3.
  • the cam groove 7b1 also has a shape (not shown) for rotating the holding pad 3a substantially -90° around the rotation axis C2 in response to the rotation of the holding part 3 from the delivery position P3 to the receiving position P1.
  • the suction box 2d, the cam mechanism 3c, and the protruding part 7b are such that the holding part 3 pivots relative to the rotating body 2 as the rotation in the rotational direction of the rotating body 2 progresses from the cutting position P2.
  • a turning mechanism is configured to connect the holding part 3 to the rotating body 2 so as to be able to turn around the axis C2.
  • the turning mechanism has a first turning position PV1 for conveying the continuous body 50A in its longitudinal direction and a second turning position for rotating the cut disposable diaper 50 by 90 degrees.
  • the holding part 3 is connected to the rotating body 2 so as to be able to rotate between the position PV2 and the holding part 3.
  • the anvil 4 includes a pedestal 4a fixed to the support cylinder 2c of the rotating body 2, and an anvil body 4b fixed to the pedestal 4a and extending radially outward from the pedestal 4a.
  • the anvil body 4b is a plate-shaped member extending in the radial direction.
  • the anvil main body 4b has an outward facing surface 4b1 that faces outward in the radial direction and cuts the continuous body 50A with the cutter 5.
  • the cutter 5 is provided so as to be able to face the outward surface 4b1 of each anvil 4 in sequence according to the rotation of the rotating body 2, and cuts the continuous body 50A between the cutter 5 and the outward surface 4b1.
  • the cutter 5 includes a cutter roll 5a that is rotatable about an axis parallel to the rotation axis C1, and a cutting blade 5b provided on the outer peripheral surface of the cutter roll 5a.
  • the cutter roll 5a is rotationally driven by a drive source (not shown) so that when the outer surface 4b1 of the anvil 4 reaches the cutting position P2 due to the rotation of the rotating body 2, the cutting blade 5b faces the outer surface 4b1. ing.
  • the cutter 5 is driven in synchronization with the rotating body 2.
  • the plurality of regulating members 6 are arranged such that the ends of the disposable diapers 50 cut by the cutter 5 extend radially inward from the holding surface 3a1 of the holding section 3, and the side surface 3a4 (in this embodiment, of the holding pad 3a) facing the circumferential direction. (sides).
  • the plurality of regulating members 6 are provided for all the anvils 4 between both of the two holding parts 3 that sandwich each anvil 4 and each anvil 4 . All the regulating members 6 have substantially the same configuration, and the configurations of the two regulating members 6 sandwiching each anvil 4 are substantially symmetrical with respect to the anvil 4 from the perspective of the rotation axis. The configuration of the two regulating members 6 will be explained.
  • the regulating member 6 is fixed to the rotor 2 via the anvil 4.
  • the regulating member 6 has a fixed portion 6a that extends radially outward and is fixed to the circumferential side of the base 4a of the anvil 4 by a bolt B1, a regulating portion 6b that extends from the radially outer end of the fixed portion 6a in the opposite direction to the anvil 4 in the circumferential direction, and a connecting portion 6c that connects the fixed portion 6a and the regulating portion 6b.
  • the fixed portion 6a and the regulating portion 6b are formed by bending a single metal plate, and the connecting portion 6c restrains the fixed portion 6a and the regulating portion 6b so as to regulate the angle change between the fixed portion 6a and the regulating portion 6b.
  • the regulating portion 6b is formed by a virtual straight line L1 (see FIG. 4). Further, the restriction portion 6b has a restriction surface 6b1 that extends along the virtual straight line L1 and faces outward in the radial direction. In this embodiment, the entire regulation surface 6b1 is located outside the virtual straight line L1 in the radial direction. Note that the regulation surface 6b1 may be located on the virtual straight line L1 from the viewpoint of the rotation axis, or may intersect with the virtual straight line L1. Furthermore, the entire regulation surface 6b1 may be located inside the virtual straight line L1 in the radial direction.
  • the radially inner end 3a41 of the side surface 3a4 of the holding section 3 is It is necessary that the portion located on the outside exists as the regulating surface 6b1.
  • the regulating member 6 is located at the portion of the holding portion closest to the regulating member 6 in the pivoting process between the first pivoting position PV1 and the second pivoting position PV2 (in this embodiment
  • the edge portion 6d is formed in an arc shape centered on the rotation axis C2 along the rotation trajectory of the circular arc portion centered on the rotation axis C2.
  • the regulating member 6 since the regulating member 6 is provided, the end portion of the disposable diaper 50 cut by the cutter 5 is prevented from colliding with the anvil 4 and the side surface 3a4 of the holding part 3. can do. Thereby, it is possible to suppress folding back or detachment of the disposable diaper 50 after cutting due to the impact of the collision.
  • the regulating surface 6b1 is located radially outward from the radially inner end of the side surface 3a4 of the holding part 3, the end of the disposable diaper 50 cut by the cutter 5 is held. Collision with the radially inner end 3a41 of the side surface 3a4 of the portion 3 can be suppressed.
  • the restriction surface 6b1 is located radially outside the virtual straight line L1 from the viewpoint of the rotation axis. Therefore, in the process in which the end of the disposable diaper 50 cut by the cutter 5 heads toward the holding part 3, the end is guided to a position outside the side surface 3a4 (virtual straight line L1) of the holding part 3 in the radial direction. Collision of the end of the disposable diaper 50 against the side surface 3a4 of the portion 3 can be more effectively suppressed.
  • the rotating mechanism suction box 2d, cam mechanism 3c, and protrusion 7b
  • the position of the disposable diaper 50 after cutting by the cutter 5 can be changed.
  • the regulating member 6 it is possible to fix the regulating member 6 to the holding portion 3, but in this case, the weight of the holding portion 3 increases, so the inertial force when the holding portion 3 rotates increases, and it becomes difficult to rotate the holding portion at high speed.
  • the regulating member 6 since the regulating member 6 is fixed to the rotating body 2, the weight of the regulating member 6 can be borne by the rotating body 2 instead of the holding part 3. On the other hand, the regulating member 6 can be provided without reducing the rotational speed of the holding part 3.
  • the regulating member 6 since the regulating member 6 has an edge formed in an arc shape centered on the pivot axis C2 from the perspective of the pivot axis, the first pivot position PV1 and the second pivot position of the holding part 3 are different from each other.
  • the regulating member 6 can be placed close to the holding portion 3 when the anvil 4 rotates to the cutting position P2 (that is, at the time of cutting) while allowing the rotation movement between the anvil 4 and the cutting position P2. Therefore, it is possible to more effectively prevent the end of the disposable diaper 50 cut by the cutter 5 from colliding with the side surface of the holding part 3.
  • the regulating members 6 are provided on both sides of the anvil 4 in the circumferential direction at the cutting position P2, folding back of the two ends of the disposable diaper 50 formed by the cutter 5 can be suppressed. can.
  • FIGS. 5 to 7 the same components as those of the cutting device 1 of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
  • the cutting device 11 has a holding surface 13a1 having a shape different from the holding surface 3a1 in the first embodiment.
  • the holding surface 13a1 has a circular shape centered on the rotation axis C2 when viewed from the rotation axis perspective (viewpoint in FIG. 5).
  • the cutting device 11 has a restricting member 16 that is different from that of the cutting device 1 according to the first embodiment.
  • the regulating member 16 is fixed to the rotating body 2 via the anvil 4.
  • the regulating member 16 has a regulating surface 16a that faces radially outward and is located radially outward from the radially inner end of the side surface 3a4 of the holding portion 3.
  • the regulation surface 16a is defined by a virtual straight line L1 connecting the edge of the outward facing surface 4b1 in the circumferential direction close to the holding part 3 and the edge of the holding surface 3a1 of the holding part 3 near the anvil 4. is also located on the outside in the radial direction. Similar to the first embodiment, the position of the regulating surface 16a is adjustable.
  • the shape of the regulating surface 16a (the shape of the part located on one side of the circumferential direction with respect to the anvil 4) from the viewpoint of the rotation axis is different from the regulating surface 6b1 of the first embodiment, and the shape of the regulating surface 16a is different from the regulating surface 6b1 of the first embodiment. It is an extending rectangle.
  • the regulating member 16 is a hollow member having a negative pressure chamber 16b inside. Further, the regulating member 16 has a suction hole 16c that opens the negative pressure chamber 16b to the outside in the radial direction on the regulating surface 16a, and an opening 16d that opens the negative pressure chamber 16b toward the standing plate 17a.
  • the standing plate 17a according to the second embodiment has a communication groove 17a1 that opens toward the regulating member 16 and extends in a predetermined rotation range around the rotation axis C1. Specifically, as shown in FIG.
  • the communication groove 17a1 generates an adsorption force on the regulating surface 16a in the rotational range of the rotating body 2 from the rotational position upstream of the cutting position P2 to the rotational position downstream of the cutting position.
  • the rotation range R1 is set as shown in FIG. 1 for reference.
  • the communication groove 17a1 is formed at a position in the radial direction that can overlap with the opening 16d from the viewpoint of the rotation axis. Therefore, when the rotating body 2 is rotating within the range where the opening 16d overlaps the communication groove 17a1 from the viewpoint of the rotation axis, as shown in FIG. is supplied to the negative pressure chamber 16b of the regulation member 16 through the communication groove 17a1 and the opening 16d, and a suction force is applied to the suction hole 16c (regulation surface 16a).
  • the standing plate 17a and the regulating member 16 constitute an adsorption mechanism for supplying an adsorption force for adsorbing the disposable diaper 50 to the regulating surface 16a in the rotation range R1 (see FIG. 1) of the rotating body 2 from a rotation position upstream of the cutting position P2 to a rotation position downstream of the cutting position P2.
  • the rotation position downstream of the cutting position P2 is set to the rotation position of the rotating body 2 before the rotation mechanism starts to rotate the holding part 3.
  • the regulating surface 16a can be placed close to the anvil 4, that is, the cutting position P2. Furthermore, since the disposable diaper 50 can be attracted to the regulating surface 16a during the period from before cutting by the cutter 5 to after cutting, the disposable diaper 50 is prevented from moving from its normal position on the anvil 4 at the cutting position P2. This allows the disposable diaper 50 to be cut at an accurate position.
  • the subsequent turning of the holding part 3 (disposable diaper 50) is reliably executed. be able to.
  • the regulating members are provided on both sides of each anvil 4 in the circumferential direction, but the regulating members may be provided only on one side of the anvil 4 in the circumferential direction.
  • all the anvils 4 are provided with a regulating member, but it is sufficient if a regulating member is provided with at least one anvil 4.
  • the cutting devices 1, 11 can be used for conveying and cutting sheets extending in the longitudinal direction.
  • the cutting devices according to the first and second embodiments have a turning mechanism for turning the holding pad 3a, the turning mechanism can also be omitted.
  • the disposable diaper is held against the holding pad 3a by suction force, but the holding force is not limited to suction force.
  • suction force it is also possible to mechanically hold the disposable diaper against the holding pad 3a.
  • a first invention provides a cutting device that conveys a sheet extending in a longitudinal direction in the longitudinal direction and cuts the sheet in a direction perpendicular to the longitudinal direction, the cutting device being centered around a rotation axis.
  • a rotating body rotatable in a predetermined rotational direction; and a holding surface for holding the sheet and facing outward in the radial direction of a circle centered on the rotational axis, the holding surface being configured to rotate in the rotational direction.
  • a plurality of holding parts attached to the rotating body so as to be lined up in a circumferential direction centered on an axis; and a plurality of holding parts each provided between two holding parts adjacent to each other in the circumferential direction among the plurality of holding parts.
  • a cutting device comprising a regulating member extending inward and regulating contact with the side surface facing in the circumferential direction.
  • the regulating member since the regulating member is provided, it is possible to prevent the end of the sheet cut by the cutter from colliding with a specific anvil and the side surface of the one-sided holding section. Thereby, it is possible to suppress folding back or detachment of the cut sheet due to the impact of the collision.
  • a second invention is the first invention, wherein the regulating member has a regulating surface facing outward in the radial direction and located on the outer side in the radial direction than the inner end in the radial direction on the side surface of the one-way holding part. It is preferable to have.
  • the second invention it is possible to suppress the end portion of the sheet cut by the cutter from colliding with the radially inner end of the side surface of the one-sided holding portion.
  • a third invention is the second invention, wherein the regulating surface includes an edge near the one holding portion in the circumferential direction of the outward facing surface when viewed along the rotation axis and an edge near the one holding portion in the circumferential direction. It is preferable that the holding part be located radially outside of a virtual straight line connecting the holding surface of the holding part with an edge near the specific anvil.
  • the end of the sheet cut by the cutter heads toward the one-sided holding part the end is guided to a position radially outside of the side surface (virtual straight line) of the one-sided holding part.
  • the end is guided to a position radially outside of the side surface (virtual straight line) of the one-sided holding part.
  • a fourth invention is the first to third inventions, in which the one-side holding portion is moved relative to the rotating body as the rotation of the rotating body progresses from the cutting position in the rotational direction.
  • the method further includes a turning mechanism that connects the one-side holding part to the rotating body so as to be able to rotate around a rotating axis perpendicular to the rotating axis, and the regulating member is fixed to the rotating body. is preferred.
  • the sheet since the sheet has a turning mechanism, the posture of the sheet after being cut by the cutter can be changed.
  • the regulating member it is conceivable to fix the regulating member to the one-side holding part, but in this case, the weight of the one-hand holding part increases, so the inertia force when the one-hand holding part turns becomes large, and the one-hand holding part increases. It becomes difficult to drive the swing at high speed.
  • the regulating member since the regulating member is fixed to the rotating body, the weight of the regulating member can be borne by the rotating body instead of the holding part.
  • the regulating member can be provided without slowing down the turning drive.
  • a fifth invention is the fourth invention, wherein the regulating member has a regulating surface that is fixed to the anvil and faces outward in the radial direction when viewed along the rotation axis.
  • the cutting device applies a suction force for suctioning the sheet to the regulating surface in a rotational range of the rotating body from a rotational position upstream of the cutting position to a rotational position downstream of the cutting position. It is preferable to further include an adsorption mechanism for supplying the liquid.
  • the regulating member since the regulating member is fixed to the anvil, the regulating surface can be placed close to the anvil, that is, the cutting position. Furthermore, since the sheet can be adsorbed to the regulating surface during the period from before cutting by the cutter to after cutting, it is possible to prevent the sheet from moving from its normal position on the anvil at the cutting position. Sheets can be cut at precise locations.
  • a sixth invention is the fifth invention, wherein a rotational position downstream of the cutting position is set to a rotational position of the rotating body before the rotational mechanism starts rotating the one-sided holding part. is preferred.
  • the sixth invention since the supply of adsorption force to the regulating surface can be stopped before the one-sided holding part starts rotating, the subsequent turning of the one-sided holding part (seat) can be executed reliably.
  • a seventh invention is the invention according to any one of the fourth to sixth inventions, wherein the turning mechanism is configured to be able to turn between a first turning position and a second turning position.
  • the one holding part is connected to the rotary body, and the regulating member is configured to connect the one holding part to the rotating body in the turning process between the first turning position and the second turning position when viewed along the turning axis. It is preferable to have an edge formed in an arc shape centered on the pivot axis along the pivot locus of the portion closest to the regulating member.
  • the regulating member since the regulating member has an edge formed in an arc shape centered on the pivot axis when viewed from the perspective of the pivot axis, the first pivot position and the second pivot position of the holding part are different from each other.
  • the regulating member can be disposed close to one of the holding parts when a particular anvil is rotated to the cutting position (i.e., during cutting) while allowing a pivoting movement between the two. Therefore, it is possible to more effectively prevent the end of the sheet cut by the cutter from colliding with the side surface of the holding section.
  • the eighth invention is any one of the first to seventh inventions, and preferably further includes a separate restricting member that is provided between the other holding part, which is the other of the two holding parts that sandwich the specific anvil, and the specific anvil, and that restricts the end of the sheet cut by the cutter from extending radially inward from the holding surface of the other holding part and contacting the side surface facing the circumferential direction when the specific anvil is rotated to the cutting position.
  • the regulating member and the separate regulating member are provided on both sides of the specific anvil in the circumferential direction at the cutting position, folding back of the two ends of the sheet formed by the cutter can be suppressed. Can be done.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Est fourni un dispositif de coupe qui peut supprimer le repliage et le détachement d'une feuille après la coupe.　Ce dispositif de coupe (1) comprend : un corps rotatif (2) ; des parties de maintien (3) présentant une surface de maintien (3a1) ; une enclume (4) disposée entre deux parties de maintien adjacentes (3) ; un dispositif de coupe (5) destiné à couper une couche jetable (50) entre une surface de face externe (4b1) de l'enclume (4) et le dispositif de coupe au niveau d'une position de coupe prédéfinie (P2) ; et un élément de restriction (6) qui est disposé entre les parties de maintien (3) et l'enclume (4), et qui, dans un état dans lequel l'enclume (4) a tourné vers la position de coupe (P2), empêche l'extrémité de la couche jetable (50) coupée par le dispositif de coupe de s'étendre vers l'intérieur dans la direction radiale à partir de la surface de maintien (3a1) sur les parties de maintien (3) et en contact avec une surface latérale (3a4) faisant face à la direction circonférentielle.
PCT/JP2023/034029 2022-09-21 2023-09-20 Dispositif de coupe WO2024063074A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022150187 2022-09-21
JP2022-150187 2022-09-21

Publications (1)

Publication Number Publication Date
WO2024063074A1 true WO2024063074A1 (fr) 2024-03-28

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WO (1) WO2024063074A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211081B2 (fr) * 1975-07-11 1987-03-10 Procter & Gamble
JP2005519675A (ja) * 2002-03-08 2005-07-07 エスシーエー・ハイジーン・プロダクツ・アーベー おむつパンツの製造方法
WO2011118491A1 (fr) * 2010-03-26 2011-09-29 ユニ・チャーム株式会社 Dispositif de transfert
WO2015068646A1 (fr) * 2013-11-08 2015-05-14 株式会社瑞光 Dispositif de coupe de bande et procédé de coupe de bande
WO2022258159A1 (fr) * 2021-06-09 2022-12-15 Essity Hygiene And Health Aktiebolag Procédé de production d'articles de type culotte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211081B2 (fr) * 1975-07-11 1987-03-10 Procter & Gamble
JP2005519675A (ja) * 2002-03-08 2005-07-07 エスシーエー・ハイジーン・プロダクツ・アーベー おむつパンツの製造方法
WO2011118491A1 (fr) * 2010-03-26 2011-09-29 ユニ・チャーム株式会社 Dispositif de transfert
WO2015068646A1 (fr) * 2013-11-08 2015-05-14 株式会社瑞光 Dispositif de coupe de bande et procédé de coupe de bande
WO2022258159A1 (fr) * 2021-06-09 2022-12-15 Essity Hygiene And Health Aktiebolag Procédé de production d'articles de type culotte

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