JP6510917B2 - Disconnection detection method - Google Patents

Disconnection detection method Download PDF

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JP6510917B2
JP6510917B2 JP2015138136A JP2015138136A JP6510917B2 JP 6510917 B2 JP6510917 B2 JP 6510917B2 JP 2015138136 A JP2015138136 A JP 2015138136A JP 2015138136 A JP2015138136 A JP 2015138136A JP 6510917 B2 JP6510917 B2 JP 6510917B2
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cutting
movable member
displacement
cylindrical roll
transported object
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JP2017019041A (en
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伸二 浜本
伸二 浜本
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Kao Corp
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Kao Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1648—Laser beams characterised by the way of heating the interface radiating the edges of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1661—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning repeatedly, e.g. quasi-simultaneous laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1696—Laser beams making use of masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83433—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts the contact angle between said rollers, cylinders or drums and said bands or belts being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83435—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts said rollers, cylinders or drums being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B29C66/72941—Non woven mats, e.g. felt coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Details Of Cutting Devices (AREA)
  • Laser Beam Processing (AREA)

Description

本発明は、切断不良の検出方法、被搬送物の切断装置、及びシート融着体の製造方法に関する。   BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a method for detecting a cutting defect, a device for cutting a transported object, and a method for manufacturing a sheet fusion product.

使い捨ておむつや生理用ナプキン等の吸収性物品の製造においては、被搬送物の搬送経路に切断装置を配置し、連続的に搬送されてきた長尺状の被搬送物を該切断装置により所定の間隔で順次切断して複数の短尺物に分割させることがある。
例えば、特許文献１には、複数枚のシートが重ねられた帯状のシート積層体を、光通過部を有する支持部材の外面上に配しながら搬送し、帯状の該シート積層体に対して支持部材の内面側から光通過部を介してレーザー光を照射し、該シート積層体を溶断するのと同時に、その溶断によって生じた複数枚のシートの切断縁部どうしを融着させ、それによって、複数枚のシートの切断縁部どうしが融着したシート融着体を得る方法が記載されている。 In the production of absorbent articles such as disposable diapers and sanitary napkins, a cutting device is disposed in the conveyance path of the article to be conveyed, and the continuous conveyed article to be conveyed is predetermined by the cutting apparatus. It may be cut at intervals sequentially and divided into a plurality of short articles.
For example, in Patent Document 1, a strip-like sheet laminate in which a plurality of sheets are stacked is conveyed while being disposed on the outer surface of a support member having a light passing portion, and the strip-like sheet laminate is supported. A laser beam is irradiated from the inner surface side of the member through the light passing portion to melt down the sheet laminate, and at the same time, cut edges of the plurality of sheets generated by the melt are fused to each other, thereby A method of obtaining a sheet fused body in which cut edges of a plurality of sheets are fused to each other is described.

特開２０１４−１６８９０４号公報JP, 2014-168904, A

ところで、被搬送物の切断分割の際に、全く切断されなかったり、被搬送物の一部がつながった状態で残るなどの切断不良が生じると、後の工程に悪影響を与える。そのため、切断不良の検出装置を用いて切断不良を検出し、切断不良を検出した場合には、不良品を搬送ラインから排出したり、搬送ラインを停止する等の対処をすることが望まれる。
切断不良の検出装置としては、例えば、切断部位を撮像して得た画像を分析して切断不良を検出する画像処理システムがある。しかし、そのような画像処理システムは高価であり、また切断装置によっては、切断装置と干渉しないように、かつ、有効な検査を行えるように撮像器や照明を設置・調整する必要が生じるため、撮像に必要な空間の確保が困難な場合もある。 By the way, if a cutting defect such as not being cut at all or a part of the transferred object remains in a connected state at the time of cutting and dividing the transferred object, the subsequent steps are adversely affected. Therefore, when a cutting defect is detected using a cutting defect detection device and a cutting defect is detected, it is desirable to take measures such as discharging the defective product from the transfer line or stopping the transfer line.
As a detection apparatus of the cutting defect, there exists an image processing system which analyzes the image obtained by imaging a cutting part, and detects a cutting defect, for example. However, such an image processing system is expensive, and some cutting devices need to install and adjust an imager and illumination so as not to interfere with the cutting device and to perform an effective inspection. In some cases, it is difficult to secure a space necessary for imaging.

本発明は、前述した従来技術が有する欠点を解消し得る切断不良の検出方法、及び切断不良の検出機能を備えた被搬送物の切断装置等に関する。   The present invention relates to a method of detecting a cutting defect that can eliminate the defects of the prior art described above, and a cutting device of a transferred object provided with a cutting defect detection function.

本発明は、長尺状の被搬送物を、支持部材上に配して搬送しながら所定の間隔で順次切断して、複数の短尺物を得る切断装置における前記支持部材に、可動部材を、切断前の被搬送物を載せた状態では変位が抑制され、該被搬送物が切断されると変位の抑制状態が解除されるように設け、前記切断装置の運転中に、前記被搬送物の切断後の所定の段階で前記可動部材が変位したか否かを基準に切断不良を検出する、切断不良の検出方法を提供するものである。
本明細書において、変位とは、被搬送物による可動部材への圧力が変化することで生じる、被搬送物側の方向への可動部材の移動をいい、変位が抑制されるとは、被搬送物により可動部材が圧力を受けることで被搬送物側の方向へ可動部材が移動できないか、その移動量が小さく抑えられていることをいう。また、変位の抑制状態が解除されるとは、被搬送物による可動部材への圧力が無くなるか、減少することで、被搬送物側の方向へ、重力又は弾性部材等の作用により可動部材が移動することをいう。 According to the present invention, a movable member is used as the movable member in a cutting device for obtaining a plurality of short objects by sequentially cutting a long object to be conveyed while arranging and conveying it on a support member at a predetermined interval. The apparatus is provided such that the displacement is suppressed in a state where the transported object before cutting is placed, and the suppression state of the displacement is released when the transported object is cut. The present invention provides a method for detecting a cutting defect, which detects a cutting defect based on whether or not the movable member is displaced at a predetermined stage after cutting.
In this specification, the displacement means the movement of the movable member in the direction of the transported object, which is caused by a change in pressure on the movable member by the transported object, and that the displacement is suppressed It means that the movable member can not move in the direction of the transported object side by receiving pressure from the movable member, or the amount of movement of the movable member is suppressed to a small value. Further, that the suppression of the displacement state is released means that the pressure on the movable member by the conveyed object is eliminated or decreased, and the movable member is moved toward the conveyed object by the action of gravity or an elastic member or the like. I say to move.

また本発明は、長尺状の被搬送物を、支持部材上に配して搬送しながら所定の間隔で順次切断して、複数の短尺物を得る切断装置であって、前記支持部材は、回転駆動される円筒ロールの周面部を形成する部材であり、前記周面部に、可動部材が、切断前の被搬送物を載せた状態では変位が抑制され、該被搬送物が切断されると変位の抑制状態が解除されるように設けられており、前記被搬送物の切断後の所定の段階で前記可動部材に変位が生じたか否かをセンサーにより検知し、変位が検知されない場合に切断不良の検知信号を出力する、被搬送物の切断装置を提供するものである。   Further, the present invention is a cutting device for obtaining a plurality of short articles by sequentially cutting an elongated object to be conveyed on a support member at predetermined intervals while conveying the object. It is a member that forms the circumferential surface portion of a rotationally driven cylindrical roll, and displacement is suppressed in a state where the movable member is placed on the conveyed object before cutting on the circumferential surface portion, and the conveyed object is cut. A displacement suppression state is released, and a sensor detects whether or not displacement occurs in the movable member at a predetermined stage after cutting the transported object, and cutting is performed when the displacement is not detected. An object of the present invention is to provide an apparatus for cutting a transported object that outputs a detection signal of failure.

また本発明は、前記の被搬送物の切断装置を用いて、複数枚のシートが重ねられた構成を有する帯状のシート積層体にレーザー光を照射し、該シート積層体を溶断するとともに、その溶断によって生じた複数枚のシートの切断縁部どうしを融着させることによって、複数枚のシートの切断縁部どうしが融着したシート融着体を得る、シート融着体の製造方法を提供するものである。   Further, according to the present invention, a band-like sheet laminate having a configuration in which a plurality of sheets are stacked is irradiated with laser light using the above-described apparatus for cutting a transported object, and the sheet laminate is fused and cut. There is provided a method for producing a sheet fusion body, which obtains a sheet fusion body in which the cutting edges of a plurality of sheets are fused by fusing the cutting edges of the plurality of sheets generated by melting. It is a thing.

本発明の切断不良の検出方法によれば、長尺状の被搬送物を搬送しながら切断する際に生じる切断不良を、簡易なセンサーを用いて簡便に検出可能である。
本発明の被搬送物の切断装置によれば、長尺状の被搬送物を搬送しながら切断する際に生じる切断不良を、簡易なセンサーを用いて簡便に検出可能である。
本発明のシート融着体の製造方法によれば、シート積層体の切断不良を容易に検出することができ、複数枚のシートの切断縁部どうしが融着したシート融着体を安定して製造することができる。 According to the method of detecting a cutting defect of the present invention, it is possible to easily detect a cutting defect that occurs when cutting a long workpiece while conveying it, using a simple sensor.
ADVANTAGE OF THE INVENTION According to the cutting apparatus of the to-be-conveyed object of this invention, the cutting defect which arises when cut | disconnecting elongate-like to-be-conveyed object can be detected simply using a simple sensor.
According to the method for producing a sheet fusion product of the present invention, the cutting failure of the sheet laminate can be easily detected, and the sheet fusion product in which the cutting edges of a plurality of sheets are fused is stabilized. It can be manufactured.

図１は、本発明のシート融着体の製造方法によって製造されるパンツ型使い捨ておむつを模式的に示す斜視図である。FIG. 1 is a perspective view schematically showing a pants-type disposable diaper produced by the method for producing a sheet fusion-bonded body according to the present invention. 図２は、図１のＩ−Ｉ線断面を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a cross section taken along line I-I of FIG. 図３は、図１に示すおむつの展開かつ伸長状態を模式的に示す平面図である。FIG. 3 is a plan view schematically showing a developed and stretched state of the diaper shown in FIG. 図４は、図１に示すおむつの製造工程における、おむつ連続体の製造工程を模式的に示す斜視図である。FIG. 4: is a perspective view which shows typically the manufacturing process of the diaper continuous body in the manufacturing process of the diaper shown in FIG. 図５は、本発明の被搬送物の切断装置の一実施形態を模式的に示す斜視図である。FIG. 5: is a perspective view which shows typically one Embodiment of the cutting device of the to-be-conveyed object of this invention. 図６は、図５に示す切断装置における第１支持部材を示す斜視図である。6 is a perspective view showing a first support member in the cutting device shown in FIG. 図７は、図６のＡ−Ａ線模式断面図であり、第１支持部材と共に円筒ロールの周面部を構成する第２支持部材を仮想線で示す。FIG. 7 is a schematic cross-sectional view taken along the line A-A of FIG. 6, and shows a second support member that constitutes the circumferential surface portion of the cylindrical roll together with the first support member in phantom lines. 図８は、図５に示す切断装置を用いて被搬送物の切断を行う様子を示す図であり、該切断装置の円筒ロールの回転軸に垂直な平面による模式断面を示す図である。FIG. 8 is a view showing a state in which the transferred object is cut using the cutting device shown in FIG. 5, and is a view showing a schematic cross section by a plane perpendicular to the rotation axis of the cylindrical roll of the cutting device. 図９（ａ）は、図５に示す切断装置における可動部材であるスリット形成部材の変位が抑制された状態を示す図であり、図９（ｂ）及び図９（ｃ）は、図５に示す切断装置の円筒ロールの外周部上に支持した、被搬送物にスリット状開口部を介してレーザー光を照射する様子を示す断面図及び平面図であり、図９（ｄ）は、図９（ａ）に示すスリット形成部材の変位状態を示す図である。Fig.9 (a) is a figure which shows the state by which the displacement of the slit formation member which is a movable member in the cutting device shown in FIG. 5 was suppressed, and FIG.9 (b) and FIG.9 (c) are FIG. Fig. 9 (d) is a cross-sectional view and a plan view showing how a transferred object is irradiated with a laser beam through a slit-like opening supported on the outer peripheral part of the cylindrical roll of the cutting device shown. It is a figure which shows the displacement state of the slit formation member shown to (a). 図１０（ａ）〜図１０（ｃ）は、被搬送物の切断の良否による、可動部材としてのスリット形成部材の状態の変化を示す断面図である。FIG. 10A to FIG. 10C are cross-sectional views showing changes in the state of the slit forming member as the movable member due to the quality of the cutting of the transported object. 図１１は、本発明の被搬送物の切断装置の他の実施形態における図８相当図である。FIG. 11 is the FIG. 8 equivalent view in other embodiment of the cutting device of the to-be-conveyed object of this invention. 図１２（ａ）及び図１２（ｂ）は、図１１に示す実施形態の切断装置における一層好ましい構成の説明図である。12 (a) and 12 (b) are explanatory views of a more preferable configuration in the cutting device of the embodiment shown in FIG.

以下本発明を、その好ましい実施形態に基づき図面を参照しながら説明する。
本発明のシート融着体の製造方法で製造するシート融着体は、即ち、複数枚のシートの縁部が重なった状態で融着したシール縁部を有するシート融着体は、例えば、図１〜図３に示すように、一対のサイドシール部４，４を有する外装体３を具備するパンツ型使い捨ておむつ１である。先ず、図１〜図３に基づいてパンツ型使い捨ておむつ１について説明する。 The present invention will be described based on its preferred embodiments with reference to the drawings.
The sheet fusion body produced by the method for producing a sheet fusion body of the present invention, that is, a sheet fusion body having a seal edge fused in a state where the edges of a plurality of sheets overlap, is shown in FIG. It is the underpants type disposable diaper 1 which comprises the exterior body 3 which has a pair of side seal parts 4 and 4 as shown in 1-3. First, the pants-type disposable diaper 1 will be described based on FIGS. 1 to 3.

パンツ型使い捨ておむつ１（以下「おむつ１」ともいう）は、図１〜図３に示すように、吸収性本体２と、吸収性本体２の非肌当接面側に配されて吸収性本体２を固定している外装体３とを備え、前身頃Ｆ（腹側部１Ａ）における外装体３の縦方向Ｘに沿う左右両側縁部Ａ１，Ａ１と後身頃Ｒ（背側部１Ｂ）における外装体３の縦方向Ｘに沿う左右両側縁部Ｂ１，Ｂ１とが接合されて一対のサイドシール部４，４、ウエスト開口部８及び一対のレッグ開口部９，９が形成されている。   The pants-type disposable diaper 1 (hereinafter also referred to as "diaper 1") is disposed on the non-skin-contacting surface side of the absorbent main body 2 and the absorbent main body 2 as shown in Figs. 2 with the exterior body 3 fixing the front and rear body portions F (abdominal side 1A) along the longitudinal direction X of the exterior body 3 at the left and right side edges A1, A1 and the rear body R (back side 1B) A pair of side seal portions 4 and 4, a waist opening 8 and a pair of leg openings 9 and 9 are formed by joining left and right side edge portions B1 and B1 along the longitudinal direction X of the exterior body 3.

おむつ１は、図３に示す如き展開かつ伸長状態の平面視において、着用者の前後方向に相当する縦方向Ｘとこれに直交する横方向Ｙとを有している。おむつ１は、着用時に股下部に配される股下部１Ｃ並びにその縦方向Ｘの前後に位置する腹側部１Ａ及び背側部１Ｂに区分することができる。股下部１Ｃにおける外装体３は、その縦方向Ｘに沿う左右両側縁部にレッグ開口部９，９形成用の凹欠部が形成されている。また、おむつ１は、図３に示すように、おむつ１を縦方向Ｘに二分する横方向Ｙに延びる仮想中心線ＣＬを境にして、前身頃Ｆと後身頃Ｒとに区分することができる。吸収性本体２は、図３に示すように、表面シート２ａと、非肌当接面を形成する裏面シート２ｂと、これら両シート間に介在配置された液保持性の吸収体２ｃとを具備する。吸収性本体２は、その長手方向を、展開かつ伸長状態におけるおむつ１の縦方向Ｘに一致させて、外装体３の中央部に公知の接合手段（接着剤等）により接合されている。ここで、展開かつ伸長状態とは、サイドシール部を引き剥がして、おむつを展開状態とし、その展開状態のおむつを、各部の弾性部材を伸長させて、設計寸法（弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ）となるまで広げた状態をいう。   The diaper 1 has a longitudinal direction X corresponding to the front-rear direction of the wearer and a lateral direction Y orthogonal to the longitudinal direction in a plan view in the unfolded and extended state as shown in FIG. The diaper 1 can be divided into a crotch 1C disposed in the crotch when worn, and a ventral side 1A and a dorsal side 1B located before and after the longitudinal direction X thereof. The exterior body 3 in the crotch portion 1C is formed with recessed and recessed portions for forming the leg openings 9 and 9 at the left and right side edge portions along the longitudinal direction X thereof. In addition, as shown in FIG. 3, the diaper 1 can be divided into a front body F and a rear body R with the virtual center line CL extending in the horizontal direction Y dividing the diaper 1 in the longitudinal direction X into a boundary. . As shown in FIG. 3, the absorbent main body 2 includes a top sheet 2a, a back sheet 2b forming a non-skin contact surface, and a liquid-retaining absorbent 2c interposed between the two sheets. Do. The absorbent main body 2 is bonded to the central portion of the exterior body 3 by a known bonding means (adhesive or the like), with the longitudinal direction thereof aligned with the longitudinal direction X of the diaper 1 in the unfolded and stretched state. Here, in the unfolded and stretched state, the side seal portion is peeled off to make the diaper in the unfolded state, and the unfolded diaper is stretched by the elastic members of the respective parts to eliminate the influence of the elastic members. In this state, it is in the state of being expanded to the same size as when it is expanded in a planar shape.

外装体３は、図２及び図３に示すように、おむつ１の外面を形成する外層シート３１と、該外層シート３１の内面側に配され、おむつ１の内面を形成する内層シート３２と、両シート３１，３２間に接着剤により固定された複数本の糸状又は帯状の弾性部材５，６，７とを含んで構成されている。このように、外装体３は、複数枚のシートが重ねられた構成を有するシート積層体である。シート積層体である外装体３は、おむつ１においては、複数枚のシート（外層シート３１及び内層シート３２）と弾性部材５，６，７とを構成部材として有している。また、おむつ１においては、外層シート３１と内層シート３２との間は、所定部位において接着剤又はヒートシール等（図示せず）によって接合されている。   As shown in FIGS. 2 and 3, the exterior body 3 includes an outer layer sheet 31 forming the outer surface of the diaper 1, and an inner layer sheet 32 disposed on the inner surface side of the outer layer sheet 31 and forming the inner surface of the diaper 1. A plurality of thread-like or band-like elastic members 5, 6, 7 fixed by an adhesive between the two sheets 31, 32 are constituted. Thus, the exterior body 3 is a sheet laminate having a configuration in which a plurality of sheets are stacked. In the diaper 1, the exterior body 3 which is a sheet laminate includes a plurality of sheets (the outer layer sheet 31 and the inner layer sheet 32) and the elastic members 5, 6, 7 as constituent members. Further, in the diaper 1, the outer layer sheet 31 and the inner layer sheet 32 are joined at a predetermined site by an adhesive, a heat seal or the like (not shown).

外装体３を構成する外層シート３１及び内層シート３２における少なくとも一部のシートは樹脂材を含んでおり、好ましくは、外層シート３１及び内層シート３２が、樹脂材を主成分として形成されている。本発明のシート融着体の製造方法における、「複数枚のシートが重ねられた構成を有するシート積層体」は、複数枚のシートの少なくとも一部のシートは、樹脂材を含み、該樹脂材を主成分として形成されていることが好ましく、例えば、樹脂材としてポリエチレン、ポリエチレンテレフタレート、ポリプロピレン等の熱融着性の合成樹脂を含み、不織布、フィルム、不織布とフィルムとのラミネートシート等からなることが好ましい。不織布としては、当該技術分野において通常用いられているものを特に制限なく用いることができ、具体的には、エアースルー不織布、ヒートロール不織布、スパンレース不織布、スパンボンド不織布、メルトブローン不織布等が挙げられる。前記シート積層体は、該シート積層体を構成する複数枚のシートのすべてが、樹脂材を含むことが好ましい。   At least a part of the outer layer sheet 31 and the inner layer sheet 32 constituting the outer package 3 contains a resin material. Preferably, the outer layer sheet 31 and the inner layer sheet 32 are formed mainly of a resin material. In the “sheet laminate having a configuration in which a plurality of sheets are stacked” in the method for producing a sheet fusion-bonded body according to the present invention, at least a part of the sheets of the plurality of sheets includes a resin material It is preferable that the resin is formed mainly of, for example, a heat-sealable synthetic resin such as polyethylene, polyethylene terephthalate or polypropylene as a resin material, and it is made of nonwoven fabric, film, laminate sheet of nonwoven fabric and film, etc. Is preferred. As the non-woven fabric, those generally used in the relevant technical field can be used without particular limitation, and specifically, air-through non-woven fabric, heat roll non-woven fabric, spunlace non-woven fabric, spunbond non-woven fabric, meltblown non-woven fabric and the like can be mentioned. . In the sheet laminate, it is preferable that all of the plurality of sheets constituting the sheet laminate contain a resin material.

おむつ１における一対のサイドシール部４，４は、図２に示すように、それぞれ、前身頃Ｆにおける外装体３の縁部と後身頃Ｒにおける外装体３の縁部が、サイドシール部４の長手方向に延在する連続線状の融着部４０で結合したシール縁部４１を有している。おむつ１におけるシール縁部４１は、サイドシール部４，４のそれぞれにおいて、ウエスト開口部８とレッグ開口部９との間の全長にわたって連続して形成されている。シール縁部４１における融着部４０は、外装体３を構成する複数枚のシート（外層シート３１、内層シート３２）の縁部が重なった状態で、それらのシートの構成樹脂が溶融固化して形成されている。このサイドシール部４が、本発明のシート融着体の製造方法における、前記の「複数枚のシートの縁部が重なった状態で融着したシール縁部」に相当する部分である。外装体３は、おむつ１の外面を形成している。   As shown in FIG. 2, the pair of side seal parts 4 and 4 in the diaper 1 has an edge of the outer package 3 in the front body F and an edge of the outer package 3 in the rear body R of the side seal 4, respectively. It has a sealing edge 41 joined by a continuous linear fusion 40 extending in the longitudinal direction. The seal edge 41 in the diaper 1 is formed continuously over the entire length between the waist opening 8 and the leg opening 9 in each of the side seals 4, 4. In the fused portion 40 at the seal edge portion 41, the constituent resin of the sheets is melted and solidified in a state where the edge portions of a plurality of sheets (the outer layer sheet 31 and the inner layer sheet 32) constituting the outer package 3 overlap. It is formed. The side seal portion 4 is a portion corresponding to the above-mentioned “seal edge portion fused in a state where the edge portions of a plurality of sheets overlap” in the method for manufacturing a sheet fusion-bonded body of the present invention. The exterior body 3 forms the outer surface of the diaper 1.

以上の構成を有するパンツ型使い捨ておむつ１は、図４に示すような工程を経て、おむつ連続体１０を製造した後、そのおむつ連続体１０を、図５に示す切断装置２０に導入して、個々のおむつ１に分割することにより得られる。
図５に示す切断装置２０は、本発明の被搬送物の切断装置の一実施形態であり、長尺状の被搬送物である、おむつ連続体１０を、円筒ロール２３の周面部を形成する部材である支持部材２１上に配して搬送しながら所定の間隔で切断して、短尺物である複数のおむつ１を得るものである。
おむつ連続体１０は、サイドシール部４を形成していないおむつ１の前駆体が、搬送方向に連なった構成を有しており、少なくとも一部に樹脂材を含む複数枚のシートが重ねられた構成を有する帯状のシート積層体である。 The pants-type disposable diaper 1 having the above configuration passes through the steps shown in FIG. 4 to produce the diaper continuous body 10, and then the diaper continuous body 10 is introduced into the cutting device 20 shown in FIG. It is obtained by dividing into individual diapers 1.
The cutting device 20 shown in FIG. 5 is an embodiment of the device for cutting a conveyed object according to the present invention, and forms the circumferential surface portion of the cylindrical roll 23 as the continuous diaper 10 which is a long conveyed object. A plurality of diapers 1 which are short articles are obtained by cutting at predetermined intervals while disposing and conveying on a support member 21 which is a member.
The diaper continuous body 10 has a configuration in which the precursor of the diaper 1 in which the side seal portion 4 is not formed is continued in the transport direction, and a plurality of sheets including a resin material is overlapped at least partially. It is a strip | belt-shaped sheet | seat laminated body which has a structure.

本実施形態の切断装置２０について、より具体的に説明すると、切断装置２０は、レーザー式切断装置であり、図５に示すように、矢印Ｄ方向に回転駆動される円筒ロール２３と、円筒ロール２３の外周部上におむつ連続体１０を導入する導入ロール２８と、レーザー光３０を集光するレンズを有する照射ヘッド３５と、円筒ロール２３の外周部上に支持されたおむつ連続体１０を加圧する加圧部材２６である加圧ヘッドと、おむつ連続体１０が切断されて生じた短尺物としてのおむつ１を、円筒ロール２３の外周部上から導出する導出ロール２９とを備えている。   More specifically, the cutting device 20 is a laser-type cutting device, and as shown in FIG. 5, a cylindrical roll 23 rotationally driven in the direction of arrow D, and a cylindrical roll An introduction roll 28 for introducing the diaper continuous body 10 on the outer peripheral portion of 23, an irradiation head 35 having a lens for condensing the laser light 30, and the diaper continuous body 10 supported on the outer peripheral portion of the cylindrical roll 23 are added. It has a pressure head which is a pressure member 26 to be pressed, and a lead-out roll 29 for leading out the diaper 1 as a short object generated by cutting the diaper continuous body 10 from the outer peripheral portion of the cylindrical roll 23.

円筒ロール２３は、その外周部が、本発明における支持部材２１によって形成されている。円筒ロール２３の外周部を形成する支持部材２１は、図５に示すように、第１面２１ａ及びそれと反対側に位置する第２面２１ｂを有しており、導入ロール２８によって導入された、おむつ連続体１０を第１面２１ａ上に支持する。換言すれば、本実施形態の切断装置２０における支持部材２１は、矢印Ｄ方向に回転駆動される円筒である中空の円筒ロール２３の周面部の形成部材である。なお、支持部材２１は、円筒ロール２３の回転軸方向両端部を形成する一対の環状の枠体（図示せず）間に固定されている。支持部材２１は、鉄、アルミニウム、ステンレス鋼、銅等の金属材料又はセラミックス等の耐熱性を有する材料からなることが好ましい。   The outer peripheral part of the cylindrical roll 23 is formed by the support member 21 in the present invention. The support member 21 forming the outer peripheral portion of the cylindrical roll 23 has a first surface 21a and a second surface 21b opposite to the first surface 21a, as shown in FIG. The diaper continuous body 10 is supported on the first surface 21 a. In other words, the support member 21 in the cutting device 20 of the present embodiment is a forming member of the peripheral surface portion of the hollow cylindrical roll 23 which is a cylindrical cylinder rotationally driven in the arrow D direction. The support member 21 is fixed between a pair of annular frame members (not shown) which form both end portions of the cylindrical roll 23 in the rotational axis direction. The support member 21 is preferably made of a heat-resistant material such as a metal material such as iron, aluminum, stainless steel or copper, or a ceramic.

円筒ロール２３の周面部には、周方向の複数個所に、第２面２１ｂ側から照射されたレーザー光３０が通過可能で、おむつ連続体１０の幅方向に長い形状の支持部材側開口部２７が形成されている。支持部材側開口部２７は、円筒ロール２３の軸方向に長い形状のスリット状開口部であり、本発明における「レーザー光が通過可能な光透過部」である。支持部材側開口部２７は、平面視して細幅の矩形形状を有し、その長手方向を、おむつ連続体１０の搬送方向Ｄと交差する方向、より好適には、円筒ロール２３の回転軸の軸長方向と平行な方向に一致させて延びている。   In the circumferential surface portion of the cylindrical roll 23, the laser beam 30 irradiated from the second surface 21b side can pass through a plurality of locations in the circumferential direction, and the support member side opening 27 having a shape long in the width direction of the diaper continuous body 10 Is formed. The support member side opening 27 is a slit-like opening having a shape that is long in the axial direction of the cylindrical roll 23, and is a "light transmitting portion through which laser light can pass" in the present invention. The support member side opening 27 has a rectangular shape having a narrow width in a plan view, and a longitudinal direction thereof intersects the conveyance direction D of the diaper continuous body 10, more preferably, the rotation axis of the cylindrical roll 23 It extends in a direction parallel to the axial direction of

本実施形態における円筒ロール２３の周面部は、図５及び図７に示すように、円筒ロール２３の周方向に間隔を設けて複数配置された第１支持部材１２１と、周方向において第１支持部材１２１どうし間に配された第２支持部材１３１とから形成されている。
第１支持部材１２１は、図７に示すように、基台部１２２と、基台部１２２の上面に固定された一対のスリット形成部材１２３，１２４を備えている。基台部１２２は、円筒ロール２３の内面側、すなわち照射ヘッド３５と対向する面側に凹部１２２ａを有しており、該凹部１２２ａの底部に、円筒ロール２３の軸方向に長い縦長矩形状の開口部１２２ｂを有している。一対のスリット形成部材１２３，１２４は、円筒ロール２３の軸方向に長い形状の板状体であり、相対向する縁部２７ａ，２７ｂが、基台部１２２の開口部１２２ｂ上に位置するように、基台部１２２の上面に固定されている。 As shown in FIGS. 5 and 7, the circumferential surface portion of the cylindrical roll 23 in the present embodiment is provided with a plurality of first support members 121 spaced apart in the circumferential direction of the cylindrical roll 23, and the first support in the circumferential direction It is formed of a second support member 131 disposed between the members 121.
As shown in FIG. 7, the first support member 121 includes a base portion 122 and a pair of slit forming members 123 and 124 fixed to the upper surface of the base portion 122. The base portion 122 has a concave portion 122a on the inner surface side of the cylindrical roll 23, that is, on the surface side facing the irradiation head 35, and at the bottom of the concave portion 122a, a longitudinally long rectangular shape long in the axial direction of the cylindrical roll 23 It has an opening 122b. The pair of slit forming members 123 and 124 are plate-like members having a shape elongated in the axial direction of the cylindrical roll 23, and the opposing edges 27 a and 27 b are positioned on the opening 122 b of the base 122. , And fixed to the upper surface of the base portion 122.

一対のスリット形成部材１２３，１２４のうちの一方のスリット形成部材１２３は、図６及び図７に示すように、ボルト１２５等の任意の固定手段により基台部１２２上に固定されており、円筒ロール２３が回転してもその状態は変化しない。これに対して、もう一方のスリット形成部材１２４は、基台部１２２に対して、軸部材１２７を介して回動可能な状態に固定されている。より詳細には、スリット形成部材１２４の長手方向の両端部の外方に、基台部１２２に対して非可動状態に固定された一対の固定用部材１２６，１２６を有しており、スリット形成部材１２４を貫通させた軸部材１２７の両端部が、一対の固定用部材１２６，１２６のそれぞれに回動可能に支持されている。これにより、スリット形成部材１２４は、円筒ロール２３の軸方向に延びる回動軸周りに回動する。また、基台部１２２の上面には、弾性部材配置用の凹部１２２ｃが形成されており、該凹部１２２ｃ内に、コイルばね１２８が配置されている。コイルばね１２８は、スリット形成部材１２４を、円筒ロール２３の径方向の外方に向かって常時付勢しており、スリット形成部材１２４の回動による変位を促進する。   One of the slit forming members 123 of the pair of slit forming members 123 and 124 is fixed on the base portion 122 by an arbitrary fixing means such as a bolt 125 as shown in FIG. 6 and FIG. The state does not change even if the roll 23 rotates. On the other hand, the other slit forming member 124 is fixed to the base portion 122 in a rotatable state via the shaft member 127. More specifically, a pair of fixing members 126 and 126 fixed to the base portion 122 in a non-movable state is provided outward of both longitudinal ends of the slit forming member 124, and the slits are formed. Both ends of the shaft member 127 penetrating the member 124 are rotatably supported by the pair of fixing members 126, 126, respectively. Thus, the slit forming member 124 pivots around a pivot axis extending in the axial direction of the cylindrical roll 23. Further, a recess 122c for disposing an elastic member is formed on the upper surface of the base portion 122, and a coil spring 128 is disposed in the recess 122c. The coil spring 128 always biases the slit forming member 124 outward in the radial direction of the cylindrical roll 23 and promotes the displacement of the slit forming member 124 due to the rotation.

本実施形態の切断装置２０においては、スリット形成部材１２４が、支持部材２１に設けられた可動部材であり、コイルばね１２８が、可動部材の変位を促進する弾性部材である。本実施形態の切断装置２０のように、円筒ロール２３の外周部に設けた可動部材の変位は、可動部材の全体又は一部を、円筒ロール２３の径方向の外方に移動させる変位であることが好ましい。
なお、図７には、切断前のおむつ連続体１０（図示せず）が一対のスリット形成部材１２３，１２４上に存在して、可動部材としてのスリット形成部材１２４の変位が抑制された状態が示されている。スリット形成部材１２４は、このように変位が抑制された状態において、スリット状開口部としての支持部材側開口部２７の一方の縁部２７ｂを形成している。 In the cutting device 20 of the present embodiment, the slit forming member 124 is a movable member provided on the support member 21, and the coil spring 128 is an elastic member that promotes the displacement of the movable member. Like the cutting device 20 of the present embodiment, the displacement of the movable member provided on the outer peripheral portion of the cylindrical roller 23 is a displacement for moving the whole or a part of the movable member outward in the radial direction of the cylindrical roller 23 Is preferred.
In addition, in FIG. 7, the diaper continuous body 10 (not shown) before a cutting exists on a pair of slit formation members 123 and 124, and the state by which the displacement of the slit formation member 124 as a movable member was suppressed is shown. It is shown. The slit forming member 124 forms one edge 27 b of the support member side opening 27 as a slit-like opening in the state where the displacement is suppressed in this manner.

本実施形態の切断装置２０は、レーザー光を照射して被搬送物を切断するレーザー式切断装置であり、照射ヘッド３５は、一対のスリット形成部材１２３，１２４間に生じたスリット状開口部２７を介して、被搬送物であるおむつ連続体１０にレーザー光を照射する。
照射ヘッド３５は、レーザー光３０を自在に走査するガルバノスキャナ（モータ軸にミラーが付いた装置）であり、レーザー光３０を円筒ロール２３の回転軸と平行な方向に進退させる機構、レーザー光３０が支持部材２１の第１面２１ａ上に支持されたおむつ連続体１０に当たる位置（照射点）を円筒ロール２３の周方向に移動させる機構、及び円筒ロール２３の周面上でレーザー光３０のスポット径を一定にする調整機構等を備えている。レーザー照射機構は、このような構成を有することによって、レーザー光３０の照射点を、円筒ロール２３の周方向及び該周方向と直交する方向の両方向に任意に移動させることができる。
レーザー光としては、切断対象の被搬送物に吸収され、該被搬送物を溶断し得るものを用いる。切断対象の被搬送物に含まれるシートが、使い捨ておむつや生理用ナプキン等の吸収性物品（サニタリー用品）の製造に汎用される合成樹脂製の不織布やフィルムである場合、レーザー光としては、ＣＯ２レーザー、ＹＡＧレーザー、ＬＤレーザー（半導体レーザー）、ＹＶＯ４レーザー、ファイバーレーザー等を用いることが好ましい。 The cutting device 20 of the present embodiment is a laser type cutting device that irradiates laser light to cut the transferred object, and the irradiation head 35 has a slit-like opening 27 formed between the pair of slit forming members 123 and 124. Laser beam is irradiated to the diaper continuous body 10 which is a to-be-conveyed object.
The irradiation head 35 is a galvano scanner (a device having a mirror attached to a motor shaft) for freely scanning the laser light 30, and a mechanism for moving the laser light 30 back and forth in a direction parallel to the rotation axis of the cylindrical roll 23. A mechanism for moving the position (irradiation point) of the diaper continuous member 10 supported on the first surface 21a of the support member 21 in the circumferential direction of the cylindrical roll 23, and the spot of the laser light 30 on the peripheral surface of the cylindrical roll 23 The adjustment mechanism etc. which make a diameter constant are provided. By having such a configuration, the laser irradiation mechanism can arbitrarily move the irradiation point of the laser beam 30 in both the circumferential direction of the cylindrical roll 23 and the direction orthogonal to the circumferential direction.
As a laser beam, what is absorbed by the to-be-conveyed object of cutting | disconnection object, and can melt-cut the said to-be-conveyed material is used. When the sheet contained in the object to be cut is a synthetic resin non-woven fabric or film generally used for the production of absorbent articles (sanitary products) such as disposable diapers and sanitary napkins, CO2 is used as laser light. It is preferable to use a laser, YAG laser, LD laser (semiconductor laser), YVO4 laser, fiber laser or the like.

次に、上述した切断装置２０を用いて、おむつ連続体１０を切断して、個々のおむつ１を得る方法について一例を挙げて説明する。図８に示す例においては、長尺状のおむつ連続体１０は、導入ロール２８によって方向転換された後、矢印Ｄ方向に回転駆動されている円筒ロール２３の外周部上に導入される。
円筒ロール２３の外周部上に導入されたおむつ連続体１０は、円筒ロール２３の外周部上に支持された状態で、レーザー光３０の照射エリアＡ１に搬送される。円筒ロール２３の外周部上に、おむつ連続体１０が導入されてから、照射エリアＡ１におけるレーザー光３０の照射により、おむつ連続体１０が切断されるまでの間においては、可動部材としてのスリット形成部材１２４は、図９（ａ）に示すように、切断前の搬送方向に張力が掛った状態のおむつ連続体１０が載せた状態となっており、そのおむつ連続体１０からの圧力を受けて、円筒ロール２３の径方向外方への変位が抑制された状態となっている。 Next, a method of obtaining the individual diapers 1 by cutting the diaper continuous body 10 using the above-described cutting device 20 will be described by way of an example. In the example shown in FIG. 8, after being changed in direction by the introduction roll 28, the long continuous diaper continuous body 10 is introduced onto the outer peripheral portion of the cylindrical roll 23 which is rotationally driven in the arrow D direction.
The diaper continuous body 10 introduced on the outer peripheral portion of the cylindrical roll 23 is conveyed to the irradiation area A1 of the laser beam 30 in a state of being supported on the outer peripheral portion of the cylindrical roll 23. Slit formation as a movable member from the time when the diaper continuous body 10 is introduced onto the outer peripheral portion of the cylindrical roll 23 and the diaper continuous body 10 is cut by the irradiation of the laser light 30 in the irradiation area A1. As shown in FIG. 9A, the member 124 is in a state in which the diaper continuous body 10 in a tensioned state in the transport direction before cutting is placed, and the pressure from the diaper continuous body 10 is received. The radial outward displacement of the cylindrical roll 23 is suppressed.

次いで、レーザー光３０の照射エリアＡ１において、おむつ連続体１０にレーザー光３０が照射され、おむつ連続体１０の溶断が行われる。レーザー光３０の照射エリアＡ１において、おむつ連続体１０に、一対のスリット形成部材１２３，１２４間に形成された支持部材側開口部２７を介して、円筒ロール２３の内側からレーザー光３０が照射され、それによって、おむつ連続体１０が切断される。レーザー光３０の照射は、図９（ｃ）に示すように、スリット状開口部である支持部材側開口部２７の長手方向に沿って、レーザー光３０の照射位置Ｐが移動するように行うことが好ましい。
おむつ連続体１０は、複数枚のシートが重ねられた構成を有する帯状のシート積層体であり、レーザー光３０によって切断されることによって溶断されるとともに、この溶断によって生じた複数枚のシートの切断縁部どうしが融着して、複数枚のシートの切断縁部どうしが融着した構成を有するサイドシール部４を備えた個々のおむつ１となる。
また、おむつ連続体１０の切断によって、おむつ連続体１０に加わっていた張力が減少することに伴い、可動部材としてのスリット形成部材１２４が受ける圧力が減少して、スリット形成部材１２４の変位の抑制状態が解除される。 Subsequently, in irradiation area A1 of the laser beam 30, the laser beam 30 is irradiated to the diaper continuous body 10, and melting cutting of the diaper continuous body 10 is performed. In the irradiation area A1 of the laser beam 30, the diaper continuous body 10 is irradiated with the laser beam 30 from the inside of the cylindrical roll 23 through the support member side opening 27 formed between the pair of slit forming members 123 and 124. , Thereby cutting the diaper continuous body 10. The irradiation of the laser beam 30 is performed so that the irradiation position P of the laser beam 30 moves along the longitudinal direction of the support member side opening 27 which is a slit-like opening, as shown in FIG. 9C. Is preferred.
The diaper continuous body 10 is a band-like sheet laminate having a configuration in which a plurality of sheets are stacked, and is cut by the laser beam 30 and cut by cutting, and cutting of the plurality of sheets generated by the cutting The edges are fused to form an individual diaper 1 having the side seal 4 having a configuration in which the cut edges of the plurality of sheets are fused.
Further, as the tension applied to the diaper continuous body 10 is reduced by cutting the diaper continuous body 10, the pressure received by the slit forming member 124 as the movable member is reduced, and the displacement of the slit forming member 124 is suppressed. The state is released.

本発明における可動部材は、変位の抑制状態が解除された直後に変位するものであっても良いが、図８に示す例においては、図８に示す加圧エリアＡ２においては、加圧部材２６である加圧ヘッドにより、おむつ連続体１０のレーザー光照射部位の近傍を加圧した状態で、レーザー光３０を照射しているため、おむつ連続体１０の切断直後には、スリット形成部材１２４の変位は生じず、そのレーザー光による切断部位が、図８に示す加圧エリアＡ２を通過した後、に、図９（ｄ）に示すような、スリット形成部材１２４の変位が生じる。なお、加圧部材２６は、円筒ロール２３と連動して回転するロール２５に、円筒ロール２３に設けられた支持部材側開口部（光透過部）と同数形成されており、図５及び図８に示すように、加圧部材２６を、カム機構やシリンダ機構を用いた公知の揺動機構により揺動させ、加圧エリアＡ２においては、おむつ連続体１０のレーザー光照射部位の近傍を加圧し、それ以外のエリアでは加圧を行わないようになっている。   The movable member in the present invention may be displaced immediately after the restraining state of the displacement is released. However, in the example shown in FIG. 8, in the pressure area A2 shown in FIG. Since the laser beam 30 is irradiated in a state where the vicinity of the laser light irradiation site of the diaper continuous body 10 is pressurized by the pressure head, the slit forming member 124 is cut immediately after the diaper continuous body 10 is cut. No displacement occurs, and the displacement of the slit forming member 124 as shown in FIG. 9D occurs after the cutting site by the laser light passes through the pressure area A2 shown in FIG. The pressing member 26 is formed on the roll 25 that rotates in conjunction with the cylindrical roll 23, in the same number as the support member side opening (light transmitting portion) provided on the cylindrical roll 23, as shown in FIGS. The pressure member 26 is rocked by a known rocking mechanism using a cam mechanism and a cylinder mechanism as shown in FIG. , In the other areas are not pressurized.

なお、円筒ロール２３における第２支持部材１３１の外面には、おむつ連続体１０又はその切断により生じたおむつ１（短尺物）を、吸引して円筒ロール２３の外周面上に安定に保持するための複数の吸引孔（図示せず）が設けられており、切断により生じたおむつ１（短尺物）は、加圧部材２６による加圧状態から開放された後においても、図８に矢印ｋで示すように、その吸引孔からの吸引により、導出ロール２９により導出されるまで円筒ロール２３上に確実に保持される。導出ロール２９も外周面に吸引孔（図示せず）を備え、円筒ロール２３により導出部Ａ３まで搬送されたおむつ１（短尺物）は、円筒ロール２３側からの吸引が停止又は弱められる一方、導出ロール２９の外周面から吸引されることで、導出ロール２９上へと移行する。第２支持部材１３１の前記吸引孔は、図示しないが、第２支持部材１３１内に設けられた通気路及び円筒ロール２３の側面に設けられたロータリーコネクタを介して外部の吸引装置と接続されている。   In addition, on the outer surface of the second support member 131 in the cylindrical roll 23, the diaper continuous body 10 or the diaper 1 (short object) generated by cutting the same is sucked and stably held on the outer peripheral surface of the cylindrical roll 23. The plurality of suction holes (not shown) are provided, and the diaper 1 (short object) produced by cutting is shown by the arrow k in FIG. 8 even after being released from the pressure state by the pressure member 26. As shown, the suction from the suction holes ensures that the cylindrical roll 23 is held until it is led out by the lead-out roll 29. The lead-out roll 29 is also provided with suction holes (not shown) on the outer peripheral surface, and while the suction from the cylindrical roll 23 side is stopped or weakened, the diaper 1 (short object) conveyed to the lead-out portion A3 by the cylindrical roll 23 By being sucked from the outer peripheral surface of the lead-out roll 29, the lead-out roll 29 is shifted. Although not shown, the suction hole of the second support member 131 is connected to an external suction device via an air passage provided in the second support member 131 and a rotary connector provided on the side surface of the cylindrical roll 23. There is.

本実施形態の切断装置２０は、円筒ロール２３における、加圧エリアＡ２から切断物導出部Ａ３までの範囲に、スリット形成部材１２４に変位が生じたか否かを検知するセンサー３６を設けてある。そして、そのセンサー３６により、その部位において、可動部材であるスリット形成部材１２４に変位が生じたか否かを検知することにより、おむつ連続体１０の切断に、切断不良が生じたか否かを簡便に検出することができる。
即ち、図１０（ａ）に示すように、おむつ連続体１０が切断により完全に分断された場合には、スリット形成部材１２４の変位がセンサー３６により検知されるのに対して、図１０（ｂ）又は図１０（ｃ）に示すように、おむつ連続体１０の切断に、おむつ連続体１０が全く切断されなかったり、一部１０ｅが切断されずに残る等の切断不良が生じたときには、スリット形成部材１２４の変位がセンサー３６により検知されない。
そのため、スリット形成部材１２４の変位がセンサー３６により検知されないときに、センサー３６に接続した制御部（図示せず）等に、切断不良の検知信号を出力させれば、従来の画像処理システムのような検査システムを用いなくても、切断不良の発生を簡便に検知することができる。 The cutting device 20 of the present embodiment is provided with a sensor 36 for detecting whether or not displacement occurs in the slit forming member 124 in the range from the pressing area A2 to the cut object lead-out portion A3 in the cylindrical roll 23. Then, by detecting whether or not displacement has occurred in the slit forming member 124 which is a movable member at the portion by the sensor 36, whether or not a cutting failure has occurred in the cutting of the diaper continuous body 10 can be simply performed. It can be detected.
That is, as shown in FIG. 10A, when the diaper continuous body 10 is completely divided by cutting, the displacement of the slit forming member 124 is detected by the sensor 36, while FIG. Or as shown in FIG. 10 (c), when the continuous diaper 10 is not cut at all or when a part 10e is left uncut or the like, as shown in FIG. The displacement of the forming member 124 is not detected by the sensor 36.
Therefore, if the control unit (not shown) or the like connected to the sensor 36 is made to output a detection signal of a cutting defect when the displacement of the slit forming member 124 is not detected by the sensor 36, it is similar to a conventional image processing system Even without using an inspection system, the occurrence of cutting defects can be easily detected.

切断不良の検知信号は、画面に警告を表示するものであっても良いし、警報をならすものであっても良く、また、単に切断不良が生じたことを、各種公知の記憶手段に記録するものであっても良い。記録手段としては、紙や、ＨＤＤ，ＲＡＭ，ＳＳＤ，ＣＤ，ＤＶＤ等が挙げられる。また、切断不良の検知信号は、切断不良に対処するための機構や装置を作動させる信号であっても良い。例えば、本発明の切断装置や、該切断装置を用いた短尺物（おむつ１等）の搬送ラインには、切断不良を検出した際に、切断不良により生じた不良品を、正規の搬送ラインから排除する機構を設けることが好ましいが、切断不良の検知信号は、そのような機構を作動させるものであっても良い。なお、制御部としては、例えば、演算処理部、記憶部、入出力装置を備えており、パーソナルコンピュータやＰＬＣ（プログラマブルロジックコントローラー）等を用いることもできる。   The detection signal of the disconnection failure may display a warning on the screen or may alert the alarm, and also record in the various known storage means that a disconnection failure has occurred. It may be something. Examples of recording means include paper, HDD, RAM, SSD, CD, DVD and the like. Further, the detection signal of the cutting failure may be a signal for operating a mechanism or device for coping with the cutting failure. For example, when a cutting defect is detected, a defective product produced due to a cutting defect is transferred from the regular conveying line to the cutting device of the present invention or the conveying line of a short object (diaper 1 etc.) using the cutting device. Although it is preferable to provide a mechanism for exclusion, the detection signal of the cutting failure may be one that activates such a mechanism. The control unit includes, for example, an arithmetic processing unit, a storage unit, and an input / output device. A personal computer, a programmable logic controller (PLC), or the like can also be used.

センサー３６は、円筒ロール２３とは別の移動しない支持体に支持させた状態に設けることが好ましく、例えば、円筒ロール２３を回動自在に支持する支持体等に設けることができる。また、これに代えて、円筒ロール２３に、個々のスリット形成部材１２４の挙動をそれぞれ検出するセンサーを設けることもできる。
センサー３６としては、例えば、電磁誘導を利用した高周波発振型、磁石を用いた磁気型、静電容量の変化を利用した静電容量型等の近接センサー、可視光線、赤外線などの光を、投光部から発射し、検出物体によって反射する光を受光部で検出する反射型や遮光される光量の変化を受光部で検出する透過型・回帰反射型等の光電センサー、プランジャやワイヤを接触させて物体を検出する接触センサー等を用いることができる。 The sensor 36 is preferably provided in a state supported by a non-moving support different from the cylindrical roll 23, and can be provided, for example, on a support that rotatably supports the cylindrical roll 23. Alternatively, the cylindrical roll 23 may be provided with a sensor for detecting the behavior of the individual slit forming members 124, respectively.
The sensor 36 may be, for example, a high frequency oscillation type using electromagnetic induction, a magnetic type using a magnet, a capacitance type proximity sensor such as a capacitance type using a change in capacitance, or light such as visible light or infrared light. A photoelectric sensor such as a reflective type that detects light emitted from the light unit and reflected by the detection object by the light receiving unit or a light receiving unit detects a change in the amount of light blocked by the light receiving unit. A touch sensor or the like that detects an object can be used.

上述した実施形態の切断装置２０は、図９に示すように、可動部材としてのスリット形成部材１２４が、被搬送物の切断が行われる部位である支持部材側開口部２７（光透過部）毎に設けられている。そのため、一部の支持部材側開口部２７（光透過部）における切断のみに切断不良が生じる場合や、切断不良が生じる支持部材側開口部２７が変化する場合にも、その切断不良を確実に検知することができる。
しかも、図９に示すように、可動部材としてのスリット形成部材１２４が、個々の支持部材側開口部２７よりも、円筒ロール２３の回転方向Ｄにおける下流側に設けられており、またそのスリット形成部材１２４の軸部材１２７がスリット形成部材１２４の下流側に設けられているため、変位した状態のスリット形成部材１２４を、ガイド等で変位の抑制位置に戻す際又は被搬送物の導入時に、変位が抑制された状態へと戻りやすい、切断後の短尺物の下流工程への搬送の邪魔にならないといった利点がある。 In the cutting device 20 of the embodiment described above, as shown in FIG. 9, the slit forming member 124 as the movable member is a portion where cutting of the transported object is performed for each support member side opening 27 (light transmitting portion) Provided in Therefore, even when a cutting defect occurs only in the cutting in a part of the supporting member side opening 27 (light transmitting portion) or when the supporting member side opening 27 causing the cutting defect changes, the cutting defect is surely made. It can be detected.
Moreover, as shown in FIG. 9, the slit forming member 124 as the movable member is provided on the downstream side in the rotation direction D of the cylindrical roll 23 with respect to the individual support member side opening 27 and the slit formation Since the shaft member 127 of the member 124 is provided on the downstream side of the slit forming member 124, the slit forming member 124 in a displaced state is displaced when returning the displacement suppressing position by a guide or the like or when introducing a transported object. There is an advantage that it is easy to return to the suppressed state, and it does not disturb the transport of the short material after cutting to the downstream process.

図１１には、本発明の被搬送物の切断装置の他の実施形態が示されている。図１１に示す切断装置２０’は、切断刃１４１を備えたカッターローラ１４０により、おむつ連続体等の被搬送物１０を、搬送しつつ切断するものである。切断装置２０’は、円筒ロール２３’の外周部を形成する支持部材２１が、第１支持部材１２１’と第２支持部材１３１とから構成されており、第１支持部材１２１’に、前述したスリット形成部材１２４と同様に、回動により変位する回動変位板１２４’が設けられている。切断刃１４１を備えたカッターローラ１４０は、半回転する毎に、切断刃１４１が被搬送物１０を切断するように構成されており、円筒ロール２３’の外周部には、切断刃１４１により被搬送物１０の切断が行われる切断部位Ｐ３毎に、回動変位板１２４’が設けられている。   FIG. 11 shows another embodiment of the device for cutting a transported object of the present invention. The cutting device 20 ′ shown in FIG. 11 is a cutter roller 140 equipped with a cutting blade 141 for cutting the conveyed object 10 such as a diaper continuous body while conveying it. In the cutting device 20 ′, the support member 21 forming the outer peripheral portion of the cylindrical roll 23 ′ is configured of the first support member 121 ′ and the second support member 131, and the first support member 121 ′ is described above. Similar to the slit forming member 124, a rotational displacement plate 124 'that is displaced by rotation is provided. The cutter roller 140 provided with the cutting blade 141 is configured such that the cutting blade 141 cuts the transferred object 10 every half rotation, and the outer periphery of the cylindrical roll 23 ′ is cut by the cutting blade 141. A pivoting displacement plate 124 'is provided for each cutting site P3 where the conveyed product 10 is to be cut.

本実施形態の切断装置２０’においても、円筒ロール２３の外周部上に導入された、おむつ連続体等の被搬送物１０は、円筒ロール２３の外周部上に支持された状態で、カッターローラ１４０による切断加工部まで搬送される。円筒ロール２３の外周部上に、被搬送物１０が導入されてから、被搬送物１０が切断されるまでの間においては、可動部材としての回動変位板１２４’は、被搬送物１０からの圧力を受けて、円筒ロール２３’の径方向外方への変位が抑制された状態となっているが、カッターローラ１４０の切断刃１４１により切断された後には、回動変位板１２４’が受ける圧力が減少して、回動変位板１２４’の変位の抑制状態が解除される。
本実施形態の切断装置２０’は、前述した切断装置２０の加圧部材２６のような加圧部材を有さないため、回動変位板１２４’上又はその近傍で、被搬送物１０が切断されると、変位の抑制状態を解除された回動変位板１２４’は、ただちに、コイルばね１２８によって押し上げられ、円筒ロール２３’の径方向の外方に向かって変位する。
そのため、円筒ロール２３’の、カッターローラ１４０による切断加工部から、おむつ１等の切断物の導出部Ａ３までの範囲にセンサー３６を設け、そのセンサー３６により、その部位において、可動部材である回動変位板１２４’に変位が生じたか否かを検知することにより、前述した切断装置２０と同様に、おむつ連続体等に被搬送物１０の切断に、切断不良が生じたか否かを簡便に検出することができる。 Also in the cutting device 20 ′ of the present embodiment, the cutter roller 10 in a state where the transferred object 10 such as a diaper continuous body introduced on the outer peripheral portion of the cylindrical roll 23 is supported on the outer peripheral portion of the cylindrical roll 23. It is conveyed to the cutting process part by 140. Between the time when the transferred object 10 is introduced onto the outer peripheral portion of the cylindrical roll 23 and the time when the transferred object 10 is cut, the rotational displacement plate 124 ′ as the movable member is Of the cylindrical roller 23 'is suppressed under the pressure of the above, but after being cut by the cutting blade 141 of the cutter roller 140, the rotational displacement plate 124' The pressure received is reduced, and the suppression of the displacement of the rotational displacement plate 124 'is released.
Since the cutting device 20 'of this embodiment does not have a pressing member such as the pressing member 26 of the cutting device 20 described above, the transferred object 10 is cut on or in the vicinity of the rotation displacement plate 124'. Then, the rotational displacement plate 124 'released from the suppression state of displacement is immediately pushed up by the coil spring 128 and displaced outward in the radial direction of the cylindrical roll 23'.
Therefore, the sensor 36 is provided in the range from the cutting processing portion of the cylindrical roller 23 'by the cutter roller 140 to the lead-out portion A3 of the cut object such as the diaper 1 etc. By detecting whether or not displacement occurs in the dynamic displacement plate 124 ', similarly to the cutting device 20 described above, whether or not a cutting defect has occurred in cutting of the conveyed object 10 in the diaper continuous body etc. is simply made It can be detected.

また、本実施形態の切断装置２０’においては、図１２（ａ）に示すように、被搬送物１０の切断を行う切断部位Ｐ３のそれぞれについて、可動部材としての回動変位板１２４’が、切断刃１４１を当接させる部位Ｐ４よりも円筒ロール２３’の回転方向Ｄの下流側に設けられているのが好ましい。図１２（ｂ）に示すように、可動部材としての回動変位板１２４’上において、切断刃１４１による被搬送物１０の切断を行った場合には、被搬送物１０の、切断により生じた端部と、回動変位板１２４’の回動軸１２７とは反対側の端部１２４ｅとの間に位置する部分１０ｆが、一旦変位した後、導出ロール２９により元の位置に戻った回動変位板１２４’に挟まれ、被搬送物１０により生じたおむつ１等の短尺物の円筒ロール２３’からの排出が困難となる恐れがあるが、図１２（ａ）に示すように、回動変位板１２４’を、切断刃１４１を当接させる部位Ｐ４よりも下流側に円筒ロール２３’の回転方向Ｄの下流側に設けることにより斯かる不都合を回避できる。
但し、被搬送物１０が伸縮部材であり、切断後に、切断した位置より回転方向Ｄの上流側に位置する部分が収縮して、前記部分１０ｆが無くなるような場合は、円筒ロール２３’における、切断刃１４１を当接させる部位Ｐ４が、回転変位板１２４’上であっても良い。 Further, in the cutting device 20 ′ of the present embodiment, as shown in FIG. 12A, a pivoting displacement plate 124 ′ as a movable member is provided for each of the cutting portions P3 for cutting the conveyed object 10, It is preferable to be provided downstream of the rotational direction D of the cylindrical roll 23 'with respect to the portion P4 to which the cutting blade 141 abuts. As shown in FIG. 12 (b), when the object 10 to be conveyed is cut by the cutting blade 141 on the rotational displacement plate 124 'as the movable member, the object 10 is produced by cutting. The portion 10f located between the end and the end 124e opposite to the rotation shaft 127 of the rotation displacement plate 124 'is once displaced, and then returned to the original position by the lead-out roll 29 There is a risk that it will be difficult to discharge short objects such as diapers 1 etc. produced by the conveyed object 10 from the cylindrical roll 23 ', which is pinched by the displacement plate 124', but as shown in FIG. Such a disadvantage can be avoided by providing the displacement plate 124 'downstream of the portion P4 with which the cutting blade 141 abuts on the downstream side of the rotational direction D of the cylindrical roll 23'.
However, in the case where the transported object 10 is an expansion and contraction member and the portion located on the upstream side in the rotational direction D from the cut position shrinks after being cut and the portion 10 f disappears, in the cylindrical roll 23 ′ The portion P4 to which the cutting blade 141 abuts may be on the rotational displacement plate 124 '.

おむつ連続体１０の製造方法の一例を図４を参照して説明する。
図４に示すおむつ連続体１０の製造方法においては、原反ロール（図示せず）から連続的に供給される帯状の外層シート３１と、原反ロール（図示せず）から連続的に供給される帯状の内層シート３２の間に、ウエストギャザーを形成するウエスト部弾性部材５、胴回りギャザーを形成する胴回り部弾性部材６及びレッグギャザーを形成するレッグ部弾性部材７を、所定の伸長率に伸長させた伸長状態で各々複数本配する。このとき、レッグ部弾性部材７は、シートの流れ方向とは直交して往復運動する公知の揺動ガイド（図示せず）を介して、所定の脚周りパターンを形成しながら配する。また、帯状の外層シート３１及び帯状の内層シート３２には、それらを重ね合わせる前に、両シート３１，３２のいずれか一方又は双方の対向する面の所定部位に、接着剤塗工機（図示せず）によりホットメルト型接着剤を塗工する。なお、ウエスト部弾性部材５、胴回り部弾性部材６等の弾性部材が、両シート３１，３２における、サイドシール部４の形成予定部分（レーザー光による溶断予定部分）を跨ぐように伸長状態で配されている場合や、切断装置２０’のように切断刃１４１を用いて行う場合、その分断後の該弾性部材の大幅な縮みや該弾性部材の抜け等の不都合を回避するために、該部分及びその近傍に接着剤を塗工しておくことが好ましい。ウエスト部弾性部材５及び胴回り部弾性部材６には、両シート３１，３２間に配される前に、接着剤塗工機（図示せず）によりホットメルト型接着剤を間欠的に塗工してもよい。 An example of the manufacturing method of the diaper continuous body 10 is demonstrated with reference to FIG.
In the manufacturing method of the diaper continuous body 10 shown in FIG. 4, it is continuously supplied from the strip-like outer-layer sheet 31 continuously supplied from an original fabric roll (not shown), and an original fabric roll (not shown). Between the belt-like inner layer sheet 32, the waist elastic members 5 forming the waist gather, the waist elastic members 6 forming the waist gather, and the leg elastic members 7 forming the leg gathers to a predetermined elongation rate A plurality of each are arranged in the stretched state. At this time, the leg elastic members 7 are disposed while forming a predetermined leg circumference pattern via a known rocking guide (not shown) which reciprocates in a direction perpendicular to the sheet flow direction. In addition, before putting the band-shaped outer layer sheet 31 and the band-shaped inner layer sheet 32 on one another, an adhesive coating machine (shown in FIG. The hot melt adhesive is applied according to FIG. In addition, elastic members such as the waist elastic member 5 and the waist elastic member 6 are arranged in an extended state so as to straddle the formation planned part of the side seal part 4 (the fusion cut by the laser light) in both sheets 31 and 32. When using the cutting blade 141 as in the case of using the cutting device 20 'or the like, in order to avoid inconveniences such as significant shrinkage of the elastic member or detachment of the elastic member after the division, the portion It is preferable to apply an adhesive in the vicinity thereof. Before being disposed between the two sheets 31 and 32, the waist elastic member 5 and the waist elastic member 6 are intermittently coated with a hot melt adhesive by an adhesive coating machine (not shown). May be

そして、図４に示すように、一対のニップロール１１，１１の間に、ウエスト部弾性部材５、胴回り部弾性部材６及びレッグ部弾性部材７を伸長状態で挟み込んだ帯状の外層シート３１及び帯状の内層シート３２を送り込んで加圧することにより、帯状シート３１，３２間に複数本の弾性部材５，６，７が伸長状態で配された帯状の外装体３を形成する。また、この外装体３の形成工程においては、隣り合う２本の胴回り部弾性部材６，６間において帯状の外層シート３１と帯状の内層シート３２とを接合する複数の接合部（図示せず）を、凸ロール１２とこれに対応するアンビルロール１３等の接合手段を用いて形成する。   Then, as shown in FIG. 4, a belt-like outer layer sheet 31 and a belt-like outer layer sheet 31 sandwiching the waist elastic member 5, the waist elastic member 6 and the leg elastic member 7 in a stretched state between the pair of nip rolls 11. By feeding the inner layer sheet 32 and pressurizing it, a band-like outer package 3 in which a plurality of elastic members 5, 6, 7 are arranged in a stretched state is formed between the band-like sheets 31, 32. Further, in the process of forming the outer package 3, a plurality of bonding portions (not shown) for bonding the strip-shaped outer layer sheet 31 and the strip-shaped inner layer sheet 32 between two adjacent waist elastic members 6, 6 Is formed using joining means such as the convex roll 12 and the anvil roll 13 corresponding to this.

その後、必要に応じて、弾性部材プレカット手段（図示せず）を用いて、後述する吸収性本体２を配する位置に対応させて、複数本の胴回り部弾性部材６及び複数本のレッグ部弾性部材７を押圧して、収縮機能が発現されないように個々複数個に分断する。前記弾性部材プレカット手段としては、例えば、特開２００２−２５３６０５号公報に記載の複合伸縮部材の製造方法に用いる弾性部材分断部等が挙げられる。   Thereafter, according to need, elastic member pre-cut means (not shown) are used to correspond to the position where the absorbent main body 2 described later is disposed, and a plurality of waist elastic members 6 and a plurality of leg elastics. The member 7 is pressed and divided into a plurality of pieces so that the contraction function is not expressed. As said elastic member precut means, the elastic member division part etc. which are used for the manufacturing method of the compound expansion-contraction member of Unexamined-Japanese-Patent No. 2002-253605 etc. are mentioned, for example.

次いで、図４に示すように、別工程で製造された吸収性本体２に予めホットメルト接着剤等の接着剤を塗工し、該吸収性本体２を９０度回転させて、帯状の外装体３を構成する内層シート３２上に間欠的に供給して固定する（本体固定工程）。そして、図４に示すように、吸収性本体２が配置された帯状の外装体３におけるレッグ部弾性部材７で環状に囲まれた環状部の内側にレッグホールＬＯ’を形成する。このレッグホール形成工程は、ロータリーカッター、レーザーカッター等の従来からこの種の物品の製造方法における手法と同様の手法を用いて実施することができる。   Next, as shown in FIG. 4, an adhesive such as a hot melt adhesive is previously applied to the absorbent main body 2 manufactured in another step, and the absorbent main body 2 is rotated 90 degrees to form a band-shaped outer package It supplies intermittently on the inner-layer sheet 32 which comprises 3, and it fixes (main body fixing process). Then, as shown in FIG. 4, a leg hole LO ′ is formed inside an annular portion annularly surrounded by the leg elastic member 7 in the band-like exterior body 3 in which the absorbent main body 2 is disposed. This leg hole formation process can be implemented using the method similar to the method in the manufacturing method of articles | goods of this kind conventionally, such as a rotary cutter and a laser cutter.

次いで、帯状の外装体３をその幅方向（外装体３の搬送方向と直交する方向）に折り畳む。より好適には、図４に示すように、帯状の外装体３の搬送方向に沿う両側部３ａ，３ａを、吸収性本体２の長手方向両端部を覆うように折り返して吸収性本体２の長手方向両端部を固定した後、外装体３を吸収性本体２とともにその幅方向に２つ折りする。こうして、おむつ連続体１０が得られる。   Next, the strip-like exterior body 3 is folded in the width direction (direction orthogonal to the transport direction of the exterior body 3). More preferably, as shown in FIG. 4, both sides 3 a, 3 a along the transport direction of the strip-like exterior body 3 are folded back so as to cover the longitudinal direction both ends of the absorbent main body 2. After fixing the direction both ends, the exterior body 3 is folded in two in the width direction together with the absorbent main body 2. Thus, the diaper continuous body 10 is obtained.

以上、本発明をその好ましい実施形態に基づき説明したが、本発明の切断不良の検出方法、被搬送物の切断装置及びシート融着体の製造方法は、上述した実施形態に制限されずに適宜変更可能である。
例えば、前述した切断装置２０は、加圧部材２６により、支持部材２１の第１面２１ａ上に支持されたおむつ連続体１０を局所的に加圧しながら、レーザー光による切断を行うものであったが、加圧部材２６は省略することもできる。
また、スリット状開口部（光透過部）を形成する一対のスリット形成部材の一方のみを、回動変位板（可動部材）とするのに代えて、両方を可動部材とすることもでき、また、スリット状開口部（光透過部）の上流側に位置するスリット形成部材のみを、回動変位板（可動部材）とすることもできる。また円筒ロール２３に設ける支持部材側開口部２７（光透過部）の数及び円筒ロール２３’に設ける切断部位Ｐ３の数は、それぞれ一つのみであっても良い。
また、可動部材として、スリット形成部材１２４のような、回動して変位する回動変位板を設けるのに代えて、円筒ロールの径方向の内方から外方に向かって進退する部材を設けることもできる。また、コイルばねに代えて、弾性材料からなるスポンジ状の部材を設けることもできる。
また、シート融着体の製造方法の一例として、パンツ型使い捨ておむつの製造方法を説明したが、本発明のシート融着体の製造方法は、他の形態のシート融着体の製造にも同様に適用することができる。 As mentioned above, although the present invention was explained based on the desirable embodiment, the detection method of the cutting defect of the present invention, the cutting device of a thing to be conveyed, and the manufacturing method of a sheet fusion object are suitably not restricted to the embodiment mentioned above. It can be changed.
For example, the cutting device 20 described above performs cutting with a laser beam while locally pressing the diaper continuous body 10 supported on the first surface 21 a of the support member 21 by the pressing member 26. However, the pressure member 26 can be omitted.
Further, instead of using only one of the pair of slit forming members forming the slit-like opening (light transmitting portion) as the rotational displacement plate (movable member), both may be used as movable members, Only the slit forming member located on the upstream side of the slit-like opening (light transmitting portion) can be used as a rotational displacement plate (movable member). In addition, the number of support member side openings 27 (light transmitting portions) provided in the cylindrical roll 23 and the number of cut portions P3 provided in the cylindrical roll 23 ′ may be only one.
Also, instead of providing a pivotally displacing plate that is displaced by rotation, such as the slit forming member 124, as a movable member, a member that advances and retracts radially inward of the cylindrical roll is provided. It can also be done. Moreover, it can replace with a coil spring and can also provide the sponge-like member which consists of elastic materials.
Moreover, although the manufacturing method of the underpants-type disposable diaper was demonstrated as an example of the manufacturing method of a sheet fusion body, the manufacturing method of the sheet fusion body of this invention is the same as manufacture of the sheet fusion body of another form. It can be applied to

また、シート融着体として、サイドシール部がヒートシールや超音波シールにより形成されたパンツ型使い捨ておむつを形成しても良く、その場合、図５や図８に示す切断装置２０，２０’より上流に、ヒートシール又は超音波シールを行うシール装置を設け、それらの切断装置２０，２０’においては、シール部上又は隣り合うシール部間における、おむつ連続体の切断のみを行っても良い。
またスリット形成部材１２４のように回動して変位する可動部材を設ける場合、回動可能な角度を所定の角度未満に規制する回動規制手段を備えることも好ましい。
また、本発明における短尺物は、長尺状の被搬送物の切断により生じたものであれば良く、その長さに特に制限はない。 Further, as a sheet fusion-bonded body, a shorts-type disposable diaper may be formed in which the side seal portion is formed by heat sealing or ultrasonic sealing. In this case, the cutting device 20 or 20 'shown in FIG. Upstream, sealing devices may be provided which perform heat sealing or ultrasonic sealing, and in these cutting devices 20 and 20 ′, only cutting of the diaper continuum may be performed on the sealing portions or between adjacent sealing portions.
Further, in the case where a movable member which is rotated and displaced like the slit forming member 124 is provided, it is preferable to include a rotation restricting means which restricts the rotatable angle to less than a predetermined angle.
Moreover, the short thing in this invention should just be a thing produced by cutting | disconnection of a long thing to be conveyed, and there is no restriction | limiting in particular in the length.

１ 使い捨ておむつ（シート融着体）
２ 吸収性本体
２ａ 表面シート
２ｂ 裏面シート
２ｃ 吸収体
３ 外装体
４ サイドシール部
５ ウエスト部弾性部材
６ 部弾性部材
７ レッグ部弾性部材
１０ おむつ連続体（長尺状の被搬送物，シート積層体）
１０ 被搬送物
２０，２０’ 被搬送物の切断装置
２１ 支持部材
２３，２３’ 円筒ロール
２１ 支持部材
１２１ 第１支持部材
１２２ 基台部
１２３ スリット形成部材
１２４ スリット形成部材（回動変位板、可動部材）
１２４’ 回動変位板（可動部材）
１２７ 軸部材（回動軸）
１２８ コイルばね（弾性部材）
１３１ 第２支持部材
１４０ カッターローラ
１４１ 切断刃
Ａ１ 照射エリア
Ａ２ 加圧エリア
Ａ３ 切断物導出部
２６ 加圧部材
２７ 支持部材側開口部（スリット状開口部，光透過部）
２８ 導入ロール
２９ 導出ロール
３０ レーザー光
３５ 照射ヘッド
３６ センサー 1 Disposable diaper (fused sheet)
Reference Signs List 2 absorbent main body 2a front sheet 2b back sheet 2c absorber 3 exterior body 4 side seal portion 5 waist portion elastic member 6 portion elastic member 7 leg portion elastic member 10 diaper continuum (long conveyed object, sheet laminate )
DESCRIPTION OF SYMBOLS 10 Object to be conveyed 20, 20 'Cutting device for object to be conveyed 21 Support member 23, 23' Cylindrical roll 21 Support member 121 First support member 122 Base portion 123 Slit forming member 124 Slit forming member (rotational displacement plate, movable Element)
124 'Rotary displacement plate (movable member)
127 Shaft member (rotational shaft)
128 coil spring (elastic member)
131 second support member 140 cutter roller 141 cutting blade A1 irradiation area A2 pressure area A3 cut object lead-out portion 26 pressure member 27 support member side opening (slit opening, light transmitting portion)
28 introduction roll 29 derivation roll 30 laser light 35 irradiation head 36 sensor

Claims (10)

長尺状の被搬送物を、支持部材上に配して搬送しながら所定の間隔で順次切断して、複数の短尺物を得る切断装置における前記支持部材に、可動部材を、切断前の被搬送物を載せた状態では変位が抑制され、該被搬送物が切断されると変位の抑制状態が解除されるように設け、
前記切断装置の運転中に、前記被搬送物の切断後の所定の段階で前記可動部材が変位したか否かを基準に切断不良を検出する、切断不良の検出方法。 The movable member is placed on the support member in the cutting device in the cutting device for obtaining a plurality of short articles by sequentially cutting the long transported object while arranging and transporting the long transported object on the supporting member, and the plurality of short objects. It is provided so that the displacement is suppressed in a state where the conveyed object is placed, and the suppression state of the displacement is released when the conveyed object is cut,
A method for detecting a cutting defect, which detects a cutting defect based on whether or not the movable member is displaced at a predetermined stage after cutting the transported object during operation of the cutting device. 長尺状の被搬送物を、支持部材上に配して搬送しながら所定の間隔で順次切断して、複数の短尺物を得る切断装置であって、
前記支持部材は、回転駆動される円筒ロールの周面部を形成する部材であり、
前記周面部に、可動部材が、切断前の被搬送物を載せた状態では変位が抑制され、該被搬送物が切断されると変位の抑制状態が解除されるように設けられており、
前記被搬送物の切断後の所定の段階で前記可動部材に変位が生じたか否かをセンサーにより検知し、変位が検知されない場合に切断不良の検知信号を出力する、被搬送物の切断装置。 A cutting apparatus for obtaining a plurality of short articles by sequentially cutting a long object to be conveyed while placing it on a support member and conveying it.
The support member is a member that forms a circumferential surface portion of a rotationally driven cylindrical roll,
The movable member is provided on the circumferential surface portion so that displacement is suppressed in a state where the transported object before cutting is placed, and the suppression state of the displacement is released when the transported object is cut,
A device for cutting a transported object, which detects whether displacement occurs in the movable member at a predetermined stage after cutting the transported object and outputs a detection signal of cutting failure when the displacement is not detected. 前記切断装置が、レーザー光線により前記被搬送物を切断するレーザー式切断装置であり、前記円筒ロールの周面部における周方向の一又は複数個所にレーザー光線が通過可能な光透過部を有しており、前記可動部材が、前記光透過部毎に設けられている、請求項２に記載の被搬送物の切断装置。   The cutting device is a laser type cutting device that cuts the transferred object by a laser beam, and has a light transmitting portion through which the laser beam can pass at one or more locations in the circumferential direction on the circumferential surface portion of the cylindrical roll The apparatus for cutting a transported object according to claim 2, wherein the movable member is provided for each of the light transmitting portions. 前記可動部材は、個々の前記光透過部の前記円筒ロールの回転方向下流側に設けられている、請求項３に記載の被搬送物の切断装置。   The apparatus according to claim 3, wherein the movable member is provided on the downstream side of the rotation direction of the cylindrical roll of each of the light transmitting portions. 前記光透過部が、前記円筒ロールの軸方向に長い形状のスリット状開口部であり、前記可動部材が、回動して変位する回動変位板であり、該回動変位板が、前記スリット状開口部の縁部を形成している、請求項３又は４に記載の被搬送物の切断装置。 The light transmitting portion is a slit-like opening having a shape elongated in the axial direction of the cylindrical roll, the movable member is a rotational displacement plate that is rotated and displaced, and the rotational displacement plate is the slit The apparatus for cutting a transported object according to claim 3 or 4 , which forms an edge of the first opening. 前記切断装置が、切断刃により前記被搬送物を切断する切断装置であり、
前記円筒ロールの周面部の周方向に、前記被搬送物の切断を行う切断部位を一又は複数有しており、前記可動部材が、該切断部位毎に設けられている、請求項２に記載の被搬送物の切断装置。 The cutting device is a cutting device that cuts the transferred object by a cutting blade,
The cutting machine according to claim 2, further comprising one or more cutting portions for cutting the transported object in the circumferential direction of the circumferential surface portion of the cylindrical roll, wherein the movable member is provided for each of the cutting portions. Equipment for cutting objects. 前記可動部材は、前記切断刃を当接させる部位よりも、前記円筒ロールの回転方向下流側に設けられているか、又は前記切断刃を当接させる部位に設けられている、請求項６に記載の被搬送物の切断装置。   The said movable member is provided in the rotation direction downstream side of the said cylindrical roll rather than the site | part which makes the said cutting blade contact, or is provided in the site | part which the said cutting blade contacts. Equipment for cutting objects. 前記可動部材が、回動して変位する回動変位板である、請求項６又は７に記載の被搬送物の切断装置。   The apparatus for cutting a transported object according to claim 6, wherein the movable member is a pivoting displacement plate that is pivoted and displaced. 前記支持部材は、前記可動部材の変位を促進する弾性部材を備えている、請求項２〜８の何れか１項に記載の被搬送物の切断装置。   The said support member is a cutting device of the to-be-conveyed object in any one of Claims 2-8 provided with the elastic member which promotes the displacement of the said movable member. 請求項３〜５の何れか１項に記載の切断装置を用いて、複数枚のシートが重ねられた構成を有する帯状のシート積層体にレーザー光を照射し、該シート積層体を溶断するとともに、その溶断によって生じた複数枚のシートの切断縁部どうしを融着させることによって、複数枚のシートの切断縁部どうしが融着したシート融着体を得る、シート融着体の製造方法。   A laser beam is irradiated to the strip | belt-shaped sheet laminated body which has the structure by which the sheet | seat of several sheets was laminated | stacked using the cutting device in any one of Claims 3-5, It melts and cuts off this sheet laminated body. A method for producing a sheet fused body, wherein a sheet fused body in which the cut edges of the plurality of sheets are fused is obtained by fusing the cut edges of the plurality of sheets produced by the melting and cutting.
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