WO2017149610A1 - Dispositif d'alimentation en matériau pour article absorbant, et procédé d'alimentation en matériau - Google Patents

Dispositif d'alimentation en matériau pour article absorbant, et procédé d'alimentation en matériau Download PDF

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Publication number
WO2017149610A1
WO2017149610A1 PCT/JP2016/056098 JP2016056098W WO2017149610A1 WO 2017149610 A1 WO2017149610 A1 WO 2017149610A1 JP 2016056098 W JP2016056098 W JP 2016056098W WO 2017149610 A1 WO2017149610 A1 WO 2017149610A1
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WO
WIPO (PCT)
Prior art keywords
succeeding
coil
absorbent article
loop
preceding material
Prior art date
Application number
PCT/JP2016/056098
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English (en)
Japanese (ja)
Inventor
宜秀 石川
浩亜希 多田
Original Assignee
ユニ・チャーム株式会社
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 ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to JP2016544879A priority Critical patent/JP6043896B1/ja
Priority to CN201680082805.2A priority patent/CN108698777B/zh
Priority to PCT/JP2016/056098 priority patent/WO2017149610A1/fr
Publication of WO2017149610A1 publication Critical patent/WO2017149610A1/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
    • 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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/14—Accumulating surplus web for advancing to machine while changing the web roll

Definitions

  • the present invention relates to a material supply device and a material supply method related to absorbent articles such as disposable diapers.
  • the various materials 3 which concern on the diaper 1 are each carried in the form of the material coil 3C coiled up.
  • the material splicing device 20 ′ joins the material 3f of the material coil 3Cf that has not been fed out to the material 3a.
  • the material 3 is continuously supplied to the processing apparatus 110 ′ of the production line without interruption.
  • the material splicing device 20 has two rotating shafts 24a' and 24f 'that can be driven and rotated while supporting the material coil 3C. Then, when one rotating shaft 24a ′ is driven to rotate, the material 3a (3) is fed out as the preceding material 3a from the material coil 3Ca, and when the material 3a of this material coil 3Ca is almost gone, the other rotation The shaft 24f ′ starts driving rotation, and thereby rotates the unrolled material coil 3Cf supported by the rotating shaft 24f ′.
  • the preceding material 3a fed from the feeding material coil 3Ca to the outer peripheral surface 3Cfs during rotation of the undrawn material coil 3Cf by the pressing member 40 ′ the preceding material
  • the material 3f (3) on the outer peripheral surface 3Cfs of the uncoiled material coil 3Cf is joined to 3a as the subsequent material 3f.
  • the material 3 is continuously supplied to the processing apparatus 110 ′ on the production line without interruption and without stopping the feeding operation.
  • FIG. 1B (as viewed from the arrow BB in FIG. 1A)
  • the conveying direction of the material 3 in the various processing devices 110 ′, 110 ′ is changed to the conveyance direction of the material 3 in the processing device 110' by a turn bar 50 'as a conveyance direction changing member.
  • the turn bar 50 ′ the meandering of the material 3 is likely to occur when the tension of the material 3 varies due to the change in the transport direction. And when such meandering is large, a line trouble may be caused.
  • the tension of the material 3f can fluctuate greatly when the first turn (first turn) of the outer periphery of the material coil 3Cf that is not advanced in FIG. That is, immediately after joining the material 3f of the subsequent material coil 3Cf that has not been advanced to the preceding material 3a that is being advanced, the material 3f of the material coil 3Cf that has not been advanced is included in the material 3a that is being advanced.
  • the tension of the material 3 since the material coil 3Cf on the downstream side of the undrawn state is almost in tension before joining, the tension of the material 3 generally decreases immediately after joining. Can vary greatly.
  • a storage device 40 ′ capable of storing the material 3 in the form of a loop 3L is provided between the material splicing device 20 ′ and the turn bar 50 ′. It is conceivable to control the rotational speed (rpm) of the rotary shaft 24 'of the material splicing device 20' so that the size of the loop 3L is constant.
  • the present invention has been made in view of the conventional problems as described above, and its purpose is to immediately suppress the fluctuation in the tension of the material fed out from the material coil, so that the conveyance direction changing member such as a turn bar can be obtained.
  • the main invention for achieving the above object is: By joining the material of another material coil as the succeeding material to the preceding material that is continuously fed out from the material coil, processing the succeeding material on the absorbent article continuously with the preceding material
  • a material splicing device that joins the succeeding material to the preceding material by pressing toward the outer peripheral surface of the coil;
  • a storage device capable of storing the preceding material or the succeeding material continuously sent from the material splicing device in the form of a loop;
  • the preceding material or the subsequent material sent from the storage device with the first direction as the transport direction is changed to a second direction that intersects the first direction in plan view and sent to the processing device.
  • a conveyance direction changing member At least after joining the succeeding material to the preceding material, the driving rotation operation of the other rotating shaft is controlled so that the size of the loop is constant,
  • the length of the transport path of the preceding material or the succeeding material from the joining position where the succeeding material is joined to the preceding material to the reaching position reaching the accumulating device is the accumulation device. Characterized in that it is shorter than the length of the transport path of the preceding material or the succeeding material from the delivery position sent to the transport direction changing member to the arrival position reaching the transport direction changing member. It is the material supply apparatus which concerns on the absorbent article which does.
  • a material supply method for supplying to an apparatus The following material that rotates the preceding material fed from the preceding material coil supported by one rotating shaft that is driven to rotate by the driving rotation operation of the other rotating shaft that supports the following material coil.
  • the material splicing device joins the subsequent material to the preceding material by pressing it toward the outer peripheral surface of the coil;
  • the storage device stores the preceding material or the subsequent material continuously sent from the material splicing device in the form of a loop;
  • the transport direction changing member changes the transport direction to the second direction intersecting the first direction in plan view with respect to the preceding material or the subsequent material sent from the storage device with the first direction as the transport direction.
  • the driving rotation operation of the other rotating shaft is controlled so that the size of the loop is constant
  • the length of the transport path of the preceding material or the succeeding material from the joining position where the succeeding material is joined to the preceding material to the reaching position reaching the accumulating device is the accumulation device. Characterized in that it is shorter than the length of the transport path of the preceding material or the succeeding material from the delivery position sent to the transport direction changing member to the arrival position reaching the transport direction changing member.
  • the present invention it is possible to prevent the meandering of the material at the conveying direction changing member such as a turn bar by immediately suppressing the tension fluctuation of the material fed out from the material coil.
  • FIG. 1A is a schematic side view of an example of the material splicing device 20 '
  • FIG. 1B is a view taken along the line BB in FIG. 1A.
  • It is a schematic side view of the storage device 40 'provided between the material splicing device 20' and the turn bar 50 '.
  • FIG. 3A is a schematic side view of a production line LM for a disposable diaper 1 as an example of an absorbent article
  • FIG. 3B is a schematic plan view of the line LM indicated by arrows BB in FIG. 3A. It is IV-IV arrow line view in FIG. 3B.
  • FIG. 4B is a schematic plan view taken along line BB in FIG. 4A.
  • FIG. 6 is a schematic side view of an example in which a member first contacted by a material 3f (3) fed out from a subsequent material coil 3Cf is an upstream fixed position roll 41u included in the storage device 40.
  • a material splicing device that joins the succeeding material to the preceding material by pressing toward the outer peripheral surface of the coil;
  • a storage device capable of storing the preceding material or the succeeding material continuously sent from the material splicing device in the form of a loop;
  • the preceding material or the subsequent material sent from the storage device with the first direction as the transport direction is changed to a second direction that intersects the first direction in plan view and sent to the processing device.
  • a conveyance direction changing member At least after joining the succeeding material to the preceding material, the driving rotation operation of the other rotating shaft is controlled so that the size of the loop is constant,
  • the length of the transport path of the preceding material or the succeeding material from the joining position where the succeeding material is joined to the preceding material to the reaching position reaching the accumulating device is the accumulation device. Characterized in that it is shorter than the length of the transport path of the preceding material or the succeeding material from the delivery position sent to the transport direction changing member to the arrival position reaching the transport direction changing member. It is the material supply apparatus which concerns on the absorbent article which does.
  • the storage device is positioned closer to the material splicing device than the midpoint position between the transport direction changing member and the material splicing device in the material transport path. . Therefore, it is possible to immediately suppress fluctuations in tension as compared with the case where the storage device is positioned closer to the conveyance direction changing member. As a result, it is possible to send the material to the transport direction changing member while suppressing fluctuations in tension, thereby effectively preventing the meandering of the material at the transport direction changing member. .
  • a material supply device for such an absorbent article The length of the transport path of the preceding material or the succeeding material between the arrival position and the delivery position of the storage device is greater than the peripheral length of the outer material surface of the succeeding material coil in an unpaid state. Short is desirable.
  • the subsequent material coil is eccentric or deformed in the radial direction, so that the subsequent material coil is rotated every 360 °.
  • the length of the conveyance path from the arrival position to the delivery position of the storage device generally corresponds to the entire length of the loop, but it is assumed that the entire length of the loop is after the undrawn state.
  • the tension fluctuation for the second round of the material coil of the subsequent row can coexist in the loop, If it does so, it will become difficult to suppress the tension
  • the total length of the loop is shorter than the peripheral length of the outer peripheral surface. Can be substantially suppressed. As a result, the tension fluctuation can be reliably suppressed. Further, since the entire length of the loop can be shortened, the influence of the material elongation or the like can be further reduced, and as a result, the tension fluctuation of the material can be reliably suppressed.
  • a material supply device for such an absorbent article The length of the transport path of the preceding material or the succeeding material between the joining position and the delivery position is preferably shorter than the circumferential length of the outer peripheral surface of the succeeding material coil in an undrawn state. .
  • the length of the transport path of the preceding material or the succeeding material from the joining position to the delivery position is the following in the undrawn state. Shorter than the circumference of the outer peripheral surface of the material coil. Therefore, the tension fluctuation of the first round can be reliably suppressed before the input of the tension fluctuation of the second round to the loop, and as a result, the tension fluctuation can be more reliably suppressed. Further, since the entire length of the loop can be shortened, the influence of the material elongation and the like can be further reduced, and as a result, the tension fluctuation of the material can be more reliably suppressed.
  • the storage device has a pair of fixed-position rolls that are rotatably supported at fixed positions, and a moving roll that is guided so as to reciprocate in a direction in which the size of the loop can be changed,
  • the loop is formed by hanging the preceding material or the succeeding material on the moving roll between the pair of fixed position rolls,
  • the storage device preferably has only one moving roll.
  • the storage device is provided with only one moving roll. Therefore, compared with the case where there are a plurality of moving rolls, it is possible to suppress the tension of the material from fluctuating due to the inertia of the moving roll itself when the moving roll reciprocates. As a result, the storage device can more reliably suppress fluctuations in material tension.
  • a material supply device for such an absorbent article After joining to the preceding material, the member with which the succeeding material fed out from the succeeding material coil first comes into contact is located upstream of the pair of fixed-position rolls in the transport direction. A fixed position roll is desirable.
  • the problem caused by the presence of a transport roll in the transport path from the subsequent material coil to the storage device after the subsequent material is fed from the subsequent material coil It can be quickly avoided that the transport roll comes into contact with the material and the tension of the material is fluctuated due to inertia such as rotation of the transport roll.
  • the storage device can suppress fluctuations in the tension of subsequent materials without any major problem.
  • a material supply device for such an absorbent article Each time when the size of the loop becomes maximum and minimum in the operation of feeding the succeeding material from the succeeding material coil, the starting point is the time when the succeeding material is joined to the preceding material. It is desirable that it is included until the other rotation shaft makes one rotation.
  • the size of the loop is maximized and minimized when the succeeding material coil is fed out in the first round. Therefore, if the operator monitors the loop of the storage device only for the time corresponding to the first turn of the subsequent material coil, it is not necessary to monitor the loop thereafter. Can reduce the burden of monitoring work.
  • a material supply method for supplying to an apparatus The following material that rotates the preceding material fed from the preceding material coil supported by one rotating shaft that is driven to rotate by the driving rotation operation of the other rotating shaft that supports the following material coil.
  • the material splicing device joins the subsequent material to the preceding material by pressing it toward the outer peripheral surface of the coil;
  • the storage device stores the preceding material or the subsequent material continuously sent from the material splicing device in the form of a loop;
  • the transport direction changing member changes the transport direction to the second direction intersecting the first direction in plan view with respect to the preceding material or the subsequent material sent from the storage device with the first direction as the transport direction.
  • the driving rotation operation of the other rotating shaft is controlled so that the size of the loop is constant
  • the length of the transport path of the preceding material or the succeeding material from the joining position where the succeeding material is joined to the preceding material to the reaching position reaching the accumulating device is the accumulation device. Characterized in that it is shorter than the length of the transport path of the preceding material or the succeeding material from the delivery position sent to the transport direction changing member to the arrival position reaching the transport direction changing member.
  • FIG. 3A is a schematic side view of an absorbent article production line LM
  • FIG. 3B is a schematic plan view of the line LM indicated by arrows BB in FIG. 3A.
  • a disposable diaper 1 is produced as an example of an absorbent article.
  • a soft and flexible continuous sheet 3 such as a nonwoven fabric or a film is used. The materials 3, 3...
  • each material 3 is brought into the production line LM in the form of a material coil 3C formed by winding the continuous sheet 3 as a material around the paper tube 3p (FIG. 4A) in a coil shape. Then, the various material coils 3C, 3C... Are mounted on the material supply device 10 provided in the production line LM for each type of the material 3, and each material 3 is fed out. Each material 3 is subjected to processing such as pressing and cutting by various processing units 110, 110 (corresponding to a processing device) while being transported along a predetermined transport path in the production line LM. The disposable diaper 1 is finally manufactured by being polymerized with other materials 3 and appropriate members 2.
  • Examples of the processing unit 110 include a fiber stacking device 110a, a cutting device 110b, a pressing device 110c, a leg hole cutting device 110d, and an end cutting device 110e, but are not limited thereto.
  • each apparatus 110a, 110b, 110c, 110d, 110e has the following functions, for example.
  • the fiber stacking device 110a generates the absorbent body 2 as the above-mentioned member using, as a main material, liquid absorbent fibers such as pulp fibers.
  • the cutting device 110b cuts the material 3 into a single sheet to generate a leakage preventing sheet 3s, and conveys the leakage preventing sheets 3s, 3s adjacent to each other in the conveying direction with a gap therebetween.
  • seat 3s is joined to another material 3 in the state which opened this space
  • a known slip cutting device for example, Japanese Patent Application Laid-Open No. 2011-083547
  • the pressing device 110c presses the materials 3, 3... With a pair of upper and lower rolls.
  • the leg hole cutting device 110d forms leg openings in the materials 3, 3... By a pair of upper and lower rolls.
  • the end cut device 110e generates the same diaper 1 by separating the diaper 1 from the materials 3, 3.
  • X direction three directions orthogonal to each other in the production line LM are referred to as an X direction, a Y direction, and a Z direction, respectively.
  • the X direction and the Y direction are each oriented in the horizontal direction, but as shown in FIG. 3A, the Z direction is oriented in the vertical direction.
  • the X direction and the Y direction are orthogonal to each other.
  • the X direction corresponds to the “second direction” according to the claims
  • the Y direction corresponds to the “first direction” according to the claims.
  • various processing units 110, 110,... are arranged side by side along the X direction.
  • the material 3 is transported along the X direction in plan view between the processing units 110, 110.
  • each material supply device 10 is moved from the processing units 110, 110. It is arranged at a shifted position. Therefore, the supply of the material 3 from each material supply apparatus 10 to the processing units 110, 110... Is mainly performed along the Y direction. That is, after the material 3 fed out in the Y direction in the material supply apparatus 10 is transported along the Y direction, the processing unit 110, 110 is supplied with the material 3.
  • the material supply device 10 is provided corresponding to each type of the material 3, but the basic configuration of each material supply device 10, 10... Is the same. Therefore, below, the one material supply apparatus 10 is demonstrated.
  • FIG. 4A is a view taken along arrow IV-IV in FIG. 3B.
  • FIG. 4B is a schematic plan view taken along the line BB in FIG. 4A. 4A and 4B, the members are appropriately omitted for the purpose of preventing the complication of the drawings.
  • the material supply device 10 has a material splicing device 20.
  • the material splicing device 20 then transfers the material 3f of another material coil 3Cf that has not been fed out to the material 3f subsequent to the material 3a before there is no preceding material 3a being fed out from the material coil 3Ca.
  • the material 3 (3a, 3f) is continuously supplied to the processing unit 110 of the production line LM without interruption.
  • a storage device 40 for storing the material 3 (3a, 3f) sent from the material splicing device 20 in the form of a loop 3L is provided at a position downstream of the material splicing device 20 in the transport direction. .
  • a turn bar 50 is provided as a transport direction changing member on the downstream side of the storage device 40 in the transport direction.
  • the turn bar 50 changes the conveyance direction of the material 3 from the Y direction to the X direction.
  • the material 3 is sent to the processing unit 110 with the conveyance direction changed to the X direction.
  • the material splicing device 20 has a support plate 21 such as a so-called end plate standing on the floor LMB of the production line LM, and a band plate shape supported by the support plate 21 so as to be turnable about a turning axis C22 along the X direction.
  • two feeding rotary shafts 24, 24 provided at both ends in the longitudinal direction of the turret 22, a servo motor (not shown) for driving and rotating the turret 22, and two feeding rotations Servo motors (not shown) that drive and rotate the shafts 24 and 24 respectively, and the preceding material 3a that is being fed by one feeding rotary shaft 24, are supported by the other feeding rotary shaft 24.
  • a press mechanism 26 that presses against the outer peripheral surface 3Cfs of the material coil 3Cf and joins the succeeding material 3f, and a paper tube 3 of the preceding material coil 3Ca that connects the preceding material 3a after or simultaneously with the joining.
  • the two feeding rotary shafts 24, 24 are provided point-symmetrically with respect to the turning axis C22 of the turret 22. Therefore, by turning the turret 22 around the turning axis C22, the positions of each other can be switched. Further, both of the feeding rotating shafts 24, 24 can be supported by being inserted into the central paper tube 3p of the material coil 3C. In the state where the insertion is supported, the feeding rotary shaft 24 is driven to rotate, thereby feeding the material 3 from the material coil 3C.
  • the two feeding rotary shafts 24, 24 basically perform this feeding operation alternately. That is, while the one feeding rotary shaft 24 feeds the material 3a from the material coil 3Ca, the other feeding rotary shaft 24 is in a standby state which is a non-feeding state. If the material 3a of one of the feeding rotary shafts 24 is almost gone, the material 3a is set as the preceding material 3a, and the material of the uncoiled material coil 3Cf attached to the other feeding rotary shaft 24 is used. These materials 3a and 3f are joined by using 3f as a subsequent material 3f. Therefore, thereafter, the other feeding rotating shaft 24 feeds and supplies the material 3f from the succeeding material coil 3Cf.
  • the succeeding material coil position P3Cf where the succeeding material coil 3Cf that is in the undrawn state during the joining process is to be located is set.
  • the preceding material coil position P3Ca where the preceding material coil 3Ca in the extended state in the process should be positioned is set.
  • the former succeeding material coil position P3Cf and the latter preceding material coil position P3Ca are set on both sides in the Y direction, and the height in the vertical direction (Z direction) is the same height. There is no limitation to this.
  • the feeding rotary shaft 24 rotates counterclockwise, so that the material coils 3Ca and 3Cf feed the materials 3a and 3f from below. Therefore, a conveyance path for the material 3a fed out from the preceding material coil 3Ca is set below the subsequent material coil 3Cf located at the subsequent material coil position P3Cf, and further below this conveyance path.
  • the press mechanism 26 and the cutter mechanism 28 are arranged.
  • the press mechanism 26 is supported so as to be able to swing around a rotation axis C26A along the X direction, and to be supported around a rotation axis C26R along the X direction at the swing end portion of the arm member 26A.
  • a press roll 26R, and an actuator 26C such as an air cylinder that drives the arm member 26A. Then, based on the swinging motion of the arm member 26A, the press roll 26R presses the preceding material 3a against the material 3f on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf from below, thereby causing the preceding material 3a and the following material 3a to follow.
  • the material 3f is joined.
  • this press roll 26R it is good also as a driven roll which obtains a rotational force by the contact with the material 3, and rotates, or obtains a driving rotational force from drive sources, such as a servomotor, as a driving roll which carries out a driving rotation. Also good.
  • the rotational speed (rpm) is controlled based on a command value (mpm) described later.
  • the cutter mechanism 28 includes an arm member 28A supported so as to be swingable about a rotation axis C28A along the X direction, a cutter blade 28B fixed to a swing end portion of the arm member 28A, and an arm member 28A. And an actuator 28C such as an air cylinder for driving the motor. Then, based on the swinging motion of the arm member 28A, the cutter blade 28B at the standby position Pw28B approaches and contacts the preceding material 3a from below, thereby bringing the preceding material 3a into the joining position Pj (FIG. 5) and a position between the leading material coil position P3Ca (FIG. 4A) and the feeding rotary shaft 24. As a result, the preceding material 3a joined to the succeeding material 3f is separated from the paper tube 3p of the feeding rotating shaft 24.
  • an actuator 28C such as an air cylinder for driving the motor.
  • the double-faced tape 4j is already provided on the surface of the tip 3fe of the material 3f located on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf.
  • a double-sided tape 4k for temporary fixing is provided so that the tip 3fe is not separated from the material coil 3Cf.
  • the feeding speed value (mpm) of the preceding material 3a becomes the above command value.
  • the controller controls the number of revolutions (rpm) of the feeding rotary shaft 24. That is, the rotation of the feeding rotary shaft 24 is controlled with the rotation speed (rpm) at which the feed speed value (mpm) becomes the command value.
  • the controller determines that the remaining amount of the material 3a of the preceding material coil 3Ca is equal to or less than the specified value, the controller starts the joining process. That is, the rotational speed (rpm) of the feeding rotary shaft 24 that supports the subsequent material coil 3Cf is reduced to a command rotational speed (rpm) at which the peripheral speed value (mpm) of the material coil 3Cf becomes the command value. To accelerate.
  • the controller determines that the rotation speed has reached the command rotation speed and determines that the tip 3fe has reached the position immediately before the press roll 26R of the press mechanism 26, the controller performs the press roll 26R.
  • the actuator 26C is controlled so that the roll 26R at the standby position Pw26R is moved toward the outer peripheral surface 3Cfs of the succeeding material coil 3Cf, and the preceding material 3a is moved to the succeeding material coil 3Cf. Press against the outer peripheral surface 3Cfs. During the pressing, the leading end 3fe of the succeeding material coil 3Cf passes through the position of the press roll 26R, so that the leading end 3fe is preceded by the double-sided tape 4j for bonding. The material 3a is joined. Then, the controller controls the actuator 26C to move the press roll 26R to the standby position Pw26R in the direction away from the subsequent material coil 3Cf, and also controls the cutter mechanism 28 to cut the preceding material 3a. Thus, the preceding material 3a is separated from the paper tube 3p. As a result, the succeeding material 3f is joined to the preceding material 3a without stopping the feeding operation.
  • the controller decelerates the rotation speed of the feeding rotary shaft 24 at the preceding material coil position P3Ca and stops the rotation of the rotary shaft 24. Then, the worker removes the paper tube 3p of the preceding material 3a from the feeding rotary shaft 24 at the same position P3Ca, and inserts and attaches a new material coil 3Cn that has not been fed to the rotary shaft 24.
  • the double-sided tape 4j for bonding is provided on the surface of the tip 3ne of the material 3n located on the outer peripheral surface 3Cns of the new material coil 3Cn, and the double-sided tape 4k for temporary fixing is provided on the back surface. Is provided.
  • the controller determines that the conditions for turning the turret 22 are satisfied, that is, the outer diameter of the succeeding material coil 3Cf located at the succeeding material coil position P3Cf is reduced by the feeding, and the coil 3Cf is manufactured.
  • the controller determines that the turret 22 can turn without interference with the floor LMB of the line LM, the press roll 26R at the standby position Pw26R, the cutter blade 28B at the standby position Pw28B, etc.
  • the controller turns the servo motor of the turret 22 on. Control and turn the turret 22 clockwise. As a result, the succeeding material coil 3Cf is moved downward along the circular arc trajectory and then moved upward.
  • the material coil 3Cf is moved to the preceding material coil position P3Ca, and the above-mentioned undrawn
  • the new material coil 3Cn in the state is moved to the subsequent material coil position P3Cf. Then, when the timing of the next joining process comes, the controller repeats the above joining process.
  • the storage device 40 is a device that stores the preceding material 3a or the succeeding material 3f (hereinafter also simply referred to as material 3) fed out from the material splicing device 20 in the form of a loop 3L so as to be sent to the turn bar 50. . Then, by adjusting the size of the loop 3L, the tension fluctuation of the material 3 is absorbed and suppressed, and the material 3 in which the tension fluctuation is suppressed is sent to the turn bar 50.
  • the storage device 40 having such a function is guided so as to reciprocate in a predetermined direction (substantially Y direction) in which the size of the loop 3L can be changed, and a pair of fixed position rolls 41u and 41d supported rotatably at a fixed position.
  • a single moving roll 41m, and an arm member 41A supported so as to be swingable about a rotation axis C41A along the X direction so as to guide the moving roll 41m so as to be reciprocally movable in the predetermined direction.
  • Each of the rolls 41u, 41m, and 41d is supported so as to be rotatable around the rotation axes C41u, C41m, and C41d along the X direction.
  • the material 3 is composed of a pair of fixed-position rolls 41u and 41d, each of the rolls 41u,
  • the loop 3L of the material 3 is formed by being hung around 41m and 41d.
  • a predetermined load (N) is applied to the moving roll 41m from the actuator 41C such as an air cylinder via the arm member 41A in the direction of increasing the loop 3L. Therefore, when the tension (N) of the material 3 is smaller than a predetermined value based on the predetermined load, the moving roll 41m moves so that the loop 3L becomes large, but the tension (N) of the material 3 is the predetermined value. If larger, the moving roll 41m moves so that the loop 3L becomes smaller.
  • the size of the loop 3L is measured by an appropriate sensor (not shown) such as a linear encoder or a rotary encoder, and this measurement signal is transmitted to the controller. Therefore, the controller corrects the command rotational speed (rpm) of the feeding rotary shafts 24 and 24 of the material splicing device 20 based on this measurement signal so that the size of the loop 3L becomes constant, and the result The tension fluctuation of the material 3 is suppressed.
  • an appropriate sensor such as a linear encoder or a rotary encoder
  • various correction methods can be used for the above-described correction processing of the command rotational speed.
  • the following process may be repeated at a predetermined control cycle.
  • the actual value of the size of the current loop 3L is obtained based on the measurement signal of the sensor, and the deviation amount is obtained by subtracting the target value of the size of the loop 3L from the actual value.
  • the control amount is calculated by multiplying the deviation amount by a predetermined control gain, and the control amount is subtracted from the above-mentioned designated rotation speed (rpm), and the subtraction value is fed out as a corrected command rotation speed.
  • the servo motor of the rotary shaft 24 is controlled.
  • the correction process is performed not only on the feeding rotary shaft 24 that feeds the preceding material 3a, but also at least the following material 3f on the feeding rotary shaft 24 that feeds the succeeding material 3f. Is made after joining to the preceding material 3a (after joining), and preferably, just before joining or from the start of the rotational operation of the rotary shaft 24. As a result, it is possible to reliably suppress later-described tension fluctuation from the first turn (first turn) of the outer periphery of the subsequent material coil 3Cf.
  • the upstream-side fixed-position roll 41u of the pair of fixed-position rolls 41u, 41d is a driven roll that rotates with the material 3 by contact with the material 3, but the downstream-side fixed-position roll 41u
  • the roll 41d may be a follower roll, or may be a drive roll that rotates by obtaining a driving rotational force from a driving source such as a servomotor.
  • a driving roll the number of revolutions (rpm) is controlled based on the aforementioned command value (mpm).
  • the downstream fixed position roll 41d is a driven roll
  • the transport roll 29R1 adjacent downstream in the transport direction of the fixed position roll 41d may be used as a drive roll.
  • the turn bar 50 changes the conveying direction of the material 3 sent from the storage device 40 from the Y direction to the X direction and sends the material 3 to the processing unit 110.
  • the turn bar 50 is a round bar having a predetermined diameter such as a stainless steel polishing bar. That is, as shown in FIG. 4B, the longitudinal direction of the round bar 50 is arranged so as not to be movable and non-rotatable in a state in which the same direction is inclined by 45 ° from both the X direction and the Y direction. Yes. Therefore, when the material 3 is wound around the turn bar 50, the conveyance direction of the material 3 is changed by 90 ° from the Y direction to the X direction.
  • FIG. 5 is an enlarged schematic side view of the main part for explaining this device. That is, in the present embodiment, the storage device 40 is positioned closer to the material splicing device 20 than the midpoint position between the turn bar 50 and the material splicing device 20 in the material 3 conveyance path. More specifically, the conveyance of the material 3 (the preceding material 3a or the following material 3f) from the joining position Pj where the following material 3f is joined to the preceding material 3a to the reaching position P40a reaching the storage device 40. The route of the material 3 (the preceding material 3a or the following material 3f) between the delivery position P40d sent from the storage device 40 to the turn bar 50 and the reaching position P50a reaching the turn bar 50 It is shorter than the length.
  • the above-mentioned “joining position Pj” can also be referred to as a pressing position Pp for pressing the preceding material 3a against the outer peripheral surface 3Cfs of the succeeding material coil 3Cf.
  • the above-mentioned “arrival position P40a reaching the storage device 40” is a position where the material 3 starts to contact the fixed position roll 41u located on the upstream side of the pair of fixed position rolls 41u and 41d.
  • the above-mentioned “delivery position P40d” is a position where the material 3 is separated from the fixed position roll 41d located on the downstream side of the pair of fixed position rolls 41u and 41d.
  • arrival position P50a reaching the turn bar 50 is a position where the material 3 starts to contact the turn bar 50. More specifically, as shown in FIG. This is the position at which the material 3 starts to contact the turn bar 50 at the central position P3M.
  • the command value (mpm) is divided by the outer diameter (m) of the material coil 3C in order to obtain the command rotation speed (rpm) corresponding to the command value (mpm) of the feeding speed value.
  • the outer diameter used at this time is sequentially obtained (for example, every rotation) as an average diameter for one rotation of the material coil 3C by an appropriate sensor (not shown) such as a laser displacement meter or an ultrasonic displacement meter. . If the outer shape of the material coil 3C is a perfect circle, the command rotational speed (rpm) corresponding to the command value (mpm) can be obtained without a large error even if the outer diameter is used.
  • the material coil 3C is a coil obtained by winding a flexible and flexible continuous sheet 3 such as a nonwoven fabric or a film, the coil 3C is easily deformed or eccentric, and as a result, the material coil 3C.
  • the size of the radius varies depending on the position in the circumferential direction. This variation in radius is particularly noticeable when the outer diameter is large, such as in an undrawn state.
  • the period of rotation of the coil 3Cf is 360 °. Large tension fluctuations may occur.
  • the total length of the loop 3L of the storage device 40 is shorter than the peripheral length of the outer peripheral surface 3Cfs of the succeeding material coil 3Cf in the undrawn state. More specifically, the length of the conveyance path of the material 3 between the arrival position P40a and the delivery position P40d of the storage device 40 is shorter than the circumference of the outer peripheral surface 3Cfs of the subsequent material coil 3Cf in the undrawn state. is doing.
  • the subsequent material coil 3Cf is eccentric or deformed in the radial direction, it is also effective for the tension fluctuation that can occur periodically every time the subsequent material coil 3Cf rotates 360 °.
  • the loop 3L is Although tension fluctuations for two rounds of the subsequent material coil 3Cf can coexist, it becomes difficult to suppress tension fluctuations in the first round.
  • the entire length of the loop 3L is shorter than the circumference of the outer peripheral surface 3Cfs.
  • the tension fluctuation can be reliably suppressed.
  • the material 3 since the material 3 has elasticity, it can be expanded and contracted according to the action of tension.
  • the overall length of the loop 3L is set as described above, the overall length of the loop 3L can be shortened as a whole. . Therefore, the influence of the elongation or the like of the material 3 can be further reduced, and as a result, the tension fluctuation of the material 3 can be more reliably suppressed.
  • the size of the loop 3L changes due to a tension variation or the like. Therefore, since the total length of the loop 3L can also be changed, the above-mentioned “total length of the loop 3L (the length of the transport path)” to be compared with the peripheral length of the outer peripheral surface 3Cfs of the subsequent material coil 3Cf is also defined.
  • the “total length of the loop 3L (the length of the transport path)” is referred to as “the total length (the length of the transport path) when the size of the loop 3L is maximum”. .
  • the present invention is not limited to this.
  • the total length in the intermediate state (the length of the transport path) may be referred to as “the total length in the arbitrary state between the maximum and minimum sizes of the loop 3L (the above-described transport length)”.
  • Route length) may be defined.
  • the length of the conveyance path of the material 3 from the joining position Pj to the delivery position P40d is set to the value after the undrawn state. It may be shorter than the circumferential length of the outer peripheral surface 3Cfs of the material coil 3Cf in the row. In this example, this is the case.
  • the present invention is not limited to this. However, also in this case, since the length of the above-mentioned transport path can be changed in accordance with the change in the total length of the loop, it is necessary to define the “length of the transport path” as well.
  • the “length of the conveyance path” is set as “the length of the conveyance path when the size of the loop 3L is maximum”. However, it is not limited to this. For example, it may be defined as “the length of the conveyance path when the size of the loop 3L is minimum”, or “the length of the conveyance path when the size of the loop 3L is between the maximum and minimum”. It may also be defined as “the length of the conveyance path in an arbitrary state between the maximum and minimum sizes of the loop 3L”.
  • the storage device 40 has only one moving roll 41m. Therefore, compared with the case where there are a plurality of moving rolls 41m, it is possible to prevent the tension of the material 3 from fluctuating due to the inertia of the moving roll 41m itself when the moving roll 41m reciprocates. As a result, the storage device 40 can suppress fluctuations in the tension of the material 3 without any significant problem.
  • the material 3 of the succeeding coil 3Cf is brought into contact with the transport roll 29R2 to be stored in the storage device 40.
  • the member that the material 3 fed out from the subsequent material coil 3 ⁇ / b> Cf first contacts is a pair of fixed-position rolls 41 u.
  • 41d may be a fixed position roll 41u located on the upstream side in the conveying direction.
  • the storage device No. 40 can suppress fluctuations in the tension of the material 3 without major problems.
  • the loop 3L of the storage device 40 is out of the entire time range in which the material 3f is fed from the subsequent material coil 3Cf.
  • Each time point when the size of the material becomes the maximum and minimum starts from the time when the succeeding material 3f is joined to the preceding material 3a. This is included until the feeding rotating shaft 24 for feeding the material coil 3Cf in the row makes one rotation. Therefore, if the operator monitors the loop 3L of the storage device 40 only for the time corresponding to the first one turn in the subsequent material coil 3Cf, it is not necessary to monitor the loop thereafter. Can reduce the burden of monitoring work.
  • the so-called unfolded disposable diaper 1 is illustrated as an example of the absorbent article, but the present invention is not limited thereto.
  • a pants-type disposable diaper may be used.
  • the absorbent article is not limited to the disposable diaper 1 described above. That is, any article that absorbs the excretion fluid of the wearer may be used.
  • the absorbent article may be a sanitary napkin or a urine picking pad.
  • the storage device 40 has only one moving roll 41m, but this is not a limitation. That is, you may have two or three moving rolls 41m. In this case, each time the moving roll 41m is increased by one, the fixed position roll 41u (or 41d) is also added one by one.
  • the round bar turn bar 50 is illustrated as an example of the transport direction changing member.
  • the present invention is not limited to this, and for example, a belt-like flat plate member may be used as the transport direction changing member.
  • the Y direction as the first direction and the X direction as the second direction are orthogonal to each other as an example of a cross in a plan view, but the present invention is not limited to this.
  • the two may intersect at an angle other than 90 °, such as 80 °.
  • the succeeding material 3f is joined to the preceding material 3a by the double-sided tape 4j, but the present invention is not limited to this.
  • they may be joined by welding such as heat sealing or ultrasonic sealing, or may be joined by a joining method other than these.
  • the press mechanism 26 has the press roll 26R, but the present invention is not limited to this.
  • the press roll 26R a configuration having a pair of rolls and an endless belt wound around the pair of rolls may be used.
  • the preceding material 3a is pressed against the material 3f on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf on the outer peripheral surface of the endless belt based on the driving of the actuator 26C.
  • the pair of rolls may both be driven rolls, or at least one of the rolls may be a drive roll.
  • the preceding material 3a is applied to the outer peripheral surface 3Cfs of the succeeding material coil 3Cf over the predetermined range in the circumferential direction of the succeeding material coil 3Ca by the endless belt.
  • the pressing position Pp and the joining position Pj are positions at the most downstream end in the circumferential direction in the predetermined range pressed by the endless belt.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Replacement Of Web Rolls (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

Le présent dispositif d'alimentation en matériau, destiné à alimenter un dispositif de traitement d'articles absorbants, comporte: un dispositif (20) d'épissage de matériau; un dispositif (40) de stockage capable de stocker, sous la forme d'une boucle, du matériau précédent ou du matériau suivant amené en continu à partir du dispositif d'épissage de matériau; et un organe (50) de changement de direction d'acheminement qui fait passer la direction d'acheminement du matériau précédent ou du matériau suivant, amené à partir du dispositif de stockage en utilisant une première direction comme direction d'acheminement, à une deuxième direction croisant la première direction dans une vue en plan, et amène le matériau précédent ou le matériau suivant au dispositif de traitement. La longueur du trajet d'acheminement du matériau précédent ou du matériau suivant entre une position (Pj) de jonction, où le matériau suivant est joint au matériau précédent, et une position (P40a) d'arrivée, où le matériau précédent ou le matériau suivant arrive au dispositif de stockage, est plus courte que la longueur du trajet d'acheminement du matériau précédent ou du matériau suivant entre une position (P40d) d'expédition, où le matériau précédent ou le matériau suivant est expédié du dispositif de stockage à l'organe de changement de direction d'acheminement, et une position (P50a) d'arrivée, où le matériau précédent ou le matériau suivant arrive à l'organe de changement de direction d'acheminement.
PCT/JP2016/056098 2016-02-29 2016-02-29 Dispositif d'alimentation en matériau pour article absorbant, et procédé d'alimentation en matériau WO2017149610A1 (fr)

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JP2016544879A JP6043896B1 (ja) 2016-02-29 2016-02-29 吸収性物品に係る資材供給装置、及び資材供給方法
CN201680082805.2A CN108698777B (zh) 2016-02-29 2016-02-29 与吸收性物品相关联的用于供给材料的设备及方法
PCT/JP2016/056098 WO2017149610A1 (fr) 2016-02-29 2016-02-29 Dispositif d'alimentation en matériau pour article absorbant, et procédé d'alimentation en matériau

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WO2019151052A1 (fr) 2018-01-31 2019-08-08 株式会社瑞光 Dispositif d'alimentation en feuilles et procédé d'alimentation en feuilles
WO2019181648A1 (fr) * 2018-03-20 2019-09-26 ユニ・チャーム株式会社 Procédé de fabrication d'article absorbant et dispositif de fabrication d'article absorbant
CN114803630A (zh) * 2022-04-27 2022-07-29 佛山科学技术学院 非晶带材双侧卷绕装置及方法

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WO2019151052A1 (fr) 2018-01-31 2019-08-08 株式会社瑞光 Dispositif d'alimentation en feuilles et procédé d'alimentation en feuilles
WO2019181648A1 (fr) * 2018-03-20 2019-09-26 ユニ・チャーム株式会社 Procédé de fabrication d'article absorbant et dispositif de fabrication d'article absorbant
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CN114803630B (zh) * 2022-04-27 2024-01-12 佛山科学技术学院 非晶带材双侧卷绕装置及方法

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CN108698777B (zh) 2019-09-24

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