TWI265804B - Sealing device and sealing method using the sealing device - Google Patents

Sealing device and sealing method using the sealing device Download PDF

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Publication number
TWI265804B
TWI265804B TW093108903A TW93108903A TWI265804B TW I265804 B TWI265804 B TW I265804B TW 093108903 A TW093108903 A TW 093108903A TW 93108903 A TW93108903 A TW 93108903A TW I265804 B TWI265804 B TW I265804B
Authority
TW
Taiwan
Prior art keywords
sealing
holding member
opposing surface
speed
rotating body
Prior art date
Application number
TW093108903A
Other languages
English (en)
Other versions
TW200507812A (en
Inventor
Hiroki Yamamoto
Original Assignee
Uni Charm Corp
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 Uni Charm Corp filed Critical Uni Charm Corp
Publication of TW200507812A publication Critical patent/TW200507812A/zh
Application granted granted Critical
Publication of TWI265804B publication Critical patent/TWI265804B/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General 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
    • B29C66/8351Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15707Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15739Sealing, e.g. involving cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30Electrical means
    • B29C65/305Electrical means involving the use of cartridge heaters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/431Joining the articles to themselves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/433Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/73General 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
    • B29C66/739General 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
    • B29C66/7392General 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
    • B29C66/73921General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824Actuating mechanisms
    • B29C66/8242Pneumatic or hydraulic drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General 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
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411Roller, cylinder or drum types
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General 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
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411Roller, cylinder or drum types
    • B29C66/83415Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General 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
    • B29C66/8351Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/93Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/932Measuring or controlling the joining process by measuring or controlling the speed by measuring the speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/93Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93431Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being kept constant over time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/93Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93441Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/93Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93451Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed by controlling or regulating the rotational speed, i.e. the speed of revolution
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/431Joining the articles to themselves
    • B29C66/4312Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43129Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams said flat seams being transversal but non-orthogonal with respect to the tubular or hollow articles, i.e. oblique
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/72General 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
    • B29C66/723General 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
    • B29C66/7234General 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 comprising a barrier layer
    • B29C66/72343General 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 comprising a barrier layer for liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/72General 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
    • B29C66/729Textile or other fibrous material made from plastics
    • B29C66/7294Non woven mats, e.g. felt
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822Transmission mechanisms
    • B29C66/8226Cam mechanisms; Wedges; Eccentric mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/92Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/96Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/48Wearing apparel
    • B29L2031/4871Underwear
    • B29L2031/4878Diapers, napkins

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Manufacturing & Machinery (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Description

1265804 ⑴ . 玖、發明說明
V 【發明所屬之技術領域】 本發明,是關於在對熱塑性的複數片薄膜進行封合 時,或在對熱塑性的複數片不織布進行封合時,或在對上 述薄膜和上述不織布進行封合時爲適宜的封合裝置及使用 上述封合裝置之封合方法,例如是關於在製造具有封合部 的用後即棄式紙尿褲或衛生棉等時爲適宜的封合裝置及使 用上述封合裝置之封合方法。 · 【先前技術】 將熱塑性的樹脂薄膜或熱塑性的纖維所形成的不織布 等在複數片重疊的狀態下,使上述薄膜或纖維融熔封合的 封合裝置,例如是記載在以下的專利文獻1和專利文獻2 中。如上述專利文獻1的記載,該封合裝置是配置在用後 即棄式紙尿褲等的製造步驟中。 在對如上述樹脂薄膜或不織布等延伸成帶狀的軟質工 # 作件進行封合,往工作件的供給方向以一定的間距形成封 合部時,或往工作件的供給方向形成連續封合部時’封合 裝置是要能夠確實支撐上述軟質工作件並且是要能夠施加 指定張力來進行支撐。因此,如以下的專利文獻1和專利 文獻2中的記載,於習知的封合裝置中,是於旋轉筒的外 周供給工作件,使旋轉筒旋轉的同時往上述旋轉方向供給 工作件。由於是在旋轉筒的外周供給工作件,所以上述外 圍面能夠確實支撐著工作件並且藉由將工作件捲繞於上述 -4- 1265804 (2) 外圍面而得以對工作見施加指定張力。 接著,在上述旋轉筒的外圍面具備有砧,此外設有與 上述外圍面成相向的超音波喇叭,與旋轉筒一起移動的工 作件’是由上述砧和超音波喇叭所夾持,藉由來自於超音 波喇叭所施加的超音波振動,使工作件內部發熱以致融熔 封合。 〔專利文獻1〕 日本特開平5 - 1 5 5 5 1號公報 〔專利文獻2〕 日本特公平2-43 63 1號公報 【發明內容】 〔發明欲解決之課題〕 但是’如上述專利文獻1或專利文獻2的記載,於習 知的軟質工作件用封合裝置中,超音波喇叭是以與旋轉筒 的外圍面成相向的狀態固定著。然後,與旋轉筒的外圍面 一起移動的工作件,是在爲砧和超音波喇叭所夾持時,邊 滑動工作件和超音波喇叭,邊對工作件施加超音波喇叭的 超苜波振動。 因此’超音波喇叭對工作件的封合部施加超音波振動 的時間就較短’容易對工作件產生封合瑕疵。又加上,若 提昇旋轉筒的旋轉數以高速來移動工作件進行封合時,工 作件及砧和超音波喇叭的相對速度會變太快,以致對工作 -5 - 1265804 (3) 件施加的振動能量減少,因此就更容易產生封合瑕疵。 本發明是爲解上述習知課題所爲的發明,其目的在於 提供一種可使軟質工作件和砧等的第1夾持構件一起迴轉 來進行封合作業的封合裝置,以降低超音波喇叭等的第2 夾持構件和工作件的相對速度,來達到能夠充分地對工作 件施加封合用能量,其結果是能夠進行高速處理的封合裝 置及使用上述封合裝置之封合方法。 〔解決課題之手段〕 本發明,是於具備有:具第1封合相向面的第1夾持 構件;及,具第2封合相向面的第2夾持構件,熱塑性軟 質工作件是由上述第1封合相向面和第2封合相向面所夾 持著來進行封合的封合裝置中,其特徵爲:上述第1夾持 構件’是將第1封合相向面朝法線方向的外側設置在旋轉 體的外周部,上述第2夾持構件,其第2封合相向面是以 面朝著上述第1封合相向面的狀態被支撐在支撐體上;設 有可使上述旋轉體旋轉的旋轉驅動手段,及驅動上述支撐 體使上述第2封合相向面可沿著上述第1封合相向面的迴 轉軌跡上所沿著的圓周面軌跡進行往復移動的往復驅動手 段;此外,在上述第1夾持構件和上述第2夾持構件往同 方向進行移動時,上述軟質工作件是由上述第1封合相向 面和第2封合相向面夾持著進行封合。 於該封合裝置中,第2夾持構件,因是沿著第1夾持 構件的第1封合相向面的迴轉方向進行往復移動,所以就 -6 - (4) 1265804 t » 能夠使工作件及第1夾持構件和第2夾持構件的相對速度 變小’因此兩夾持構件就能夠長時間對工作件施加封合用 的能量。此外,在高速旋轉著旋轉體以進行高速處理時也 難以產生封合瑕疵。 另外’於本發明中,是構成爲當設置在旋轉體上的上 述第1夾持構件的數量爲N時,則在上述旋轉體進行1 旋轉的期間,上述第2夾持構件會進行N週期的往復移 動。 於本發明中,上述N是爲1以上。藉由以N週期來 進行第2夾持構件的往復移動,就能夠使進行迴轉的第i 夾持構件和第2夾持構件可確實夾持工作件。 上述本發明,旋轉體是以等角速度受到驅動使第1封 合相向面以一定的圓周速度V0進行移動,與上述第1封 合相向面往同方向進行移動時的第2封合相向面的圓周速 度Vt是根據時間來進行變化,在以相對速度V0-Vt進行 移動的第1封合相向面和第2封合相向面之間,上述軟質 工作件是被夾持著進行封合。 上述相對速度V〇-Vt,其與第1夾持構件的圓周速度 V 0相比是爲極小値,所以與習知相比第1夾持構件和第 2夾持構件就能夠較長時間對工作件施加封合用能量。 另,雖然上述相對速度是沒有必要爲零,但若使第2封合 相向面的速度Vt的最大値與上述圓周速度V0成一致 時,就能夠擁有上述相對速度是爲零的瞬間。 於該狀況時,最好是於第1夾持構件或第2夾持構 -7 - 1265804 (5) 件,設有隔著間隔在旋轉體圓周方向的封合圖案,上述圓 周速度V t的相位是設定成:當上述第2夾持構件的中心 是位於兩封合圖案的中間位置時,上述相對速度vo-vt是 爲最小。 在上述中間位置將相對速度成爲最小時,就能夠使第 1夾持構件和第2夾持構件夾持時的上述相對速度於各別 的封合圖案是成同等。因此,於兩封合圖案中封合用能量 的供給條件差異就能夠消除,藉由兩封合圖案的雙方得以 成爲確實的封合,使兩封合圖案形成的封合品質可成同 等。 例如本發明,上述支撐體其轉動中心是與旋轉體的旋 轉中心成一致或幾乎成一致地進行擺動動作,上述往復驅 動手段是可將等速旋轉運動轉換成上述支撐體的往復運動 的曲柄機構。 若採用曲柄機構,則上述往復驅動手段的構造就能夠 變簡單。於本發明中,上述往復驅動手段雖也可用凸輪將 支撐體的往復運動以凸輪形狀來進行控制,但因凸輪的加 工成本高,所以採用曲柄機構時就能以低成本來構成裝 置。 又加上’於本發明中,上述旋轉體的旋轉軸,設有可 朝上述第2夾持構件的方向進行移動,對上述旋轉體朝第 2夾持構件進行加壓,以對第1封合相向面和第2封合相 向面所形成的軟質工作件夾持力進行設定的加壓力設定手 段。 -8- (6) 1265804 • » 設有上述加壓力設定手段時,就能夠使第1夾持構件 和第2夾持構件對工作件夾持時的夾持力經常設定成適 度。 於該狀況時,由上述加壓力設定手段所設定的上述夾 持力’最好是形成爲可因應旋轉體的旋轉速度來改變調 整。 於本發明的封合裝置中,使上述相對速度變小時,就 可使來自於第1夾持構件和第2夾持構件的封合用能量能 夠盡量地長時間對工作件進行施加。但是,若將旋轉體的 旋轉速度加快,則對工作件封合用所要施加能量的施加時 間還是會減少。於該狀況時,藉由增強上述夾持力,可使 工作件的封合部確實形成。 其次,本發明,是於由具第1封合相向面的第1夾持 構件及具第2封合相向面的第2夾持構件來夾持著熱塑性 軟質工作件進行封合的封合方法中,其特徵爲:是將上述 第1夾持構件使其第1封合相向面朝迴轉軌跡的法線方向 外側進行迴轉的同時,將上述軟質工作件沿著上述第1夾 持構件的迴轉軌跡進行供給,使第1封合相向面和軟質工 作件一起進行移動,是將上述第2夾持構件使其第2封合 相向面與上述第1封合相向面成相向,沿著第1封合相向 面的迴轉軌跡進行往復移動;是將上述第1封合相向面的 圓周速度爲一定速度V0,將第2封合相向面移動往與第 1封合相向面移動方向爲同方向的速度Vt及與此爲反方 向的速度· V t均是爲根據時間來進行變化的可變速度;在 -9- (7) 1265804 » % 上述第1夾持構件和第2夾持構件往同方向進行移動時, 是於以相對速度V0_Vt進行移動的第丨封合相向面和第2 封合相向面之間夾持著上述軟質工作件來進行封合。 於該封合方法中’冋樣地’最好是於第1夾持構件或 第2夾持構件上’設有於圓周方向隔著間隔的封合圖案, 上述圓周速度Vt的相位是設定成:當上述第2夾持構件 的中心位於兩封合圖案的中間位置時,可使上述相對速度 V0-Vt爲最小。 此外,採用可將等速旋轉運動轉換成上述支撐體的往 復運動的曲柄機構是可使上述第2夾持構件進行往復移 動。 再加上’以等間距進行迴轉的的上述第1夾持構件的 數量爲N時,則在上述旋轉體進行1旋轉的期間,就可 上述第2夾持構件進行n週期的往復移動。 本發明是適用於例如上述軟質工作件,是具有:於其 供給方向隔著間隔配置的液吸收體;及,可支撐熔合上述 液吸收體的溥層’是於上述液吸收體和液吸收體之間,重 s者上述溥層然後由上述第1封合相向面和第2封合相向 面夾持進行封合。 藉由該封合方法,是可製造用後即棄式紙尿褲或衛生 棉等。 或者’也可以是於上述用後即棄式紙尿褲或衛生棉等 的製造步驟前階段中,重疊上述樹脂薄膜或不織布來進行 封合的封合方法。 -10- 1265804 (8) 【實施方式】 〔發明之實施形態〕 以下,參照圖面對本發明進行說明。 第1圖爲表不本發明的封合裝置一實施形態正面圖, 第2圖爲封合裝置左側面圖,第3圖爲表示封合裝置的動 作說明圖,第4圖爲表示封合動作一例的放大剖面圖,第 5圖爲表示成爲第1夾持構件的砧和成爲第2夾持構件的 超音波喇叭的相向狀態透視圖,第6 ( A ) 、( B )圖爲表 示軟質工作件的透視圖。 於第1圖和第2圖所示的封合裝置1中,是以〇 1表 示旋轉體的旋轉中心線,通過該旋轉中心線〇 i往垂直延 伸的垂直基準線則是以0y來表示。第1圖中所呈現的 側’即第2圖的圖示右側是封合裝置1的前方,第2圖的 圖示左側是封合裝置1的後方。 封合裝置1具有固定平台2以做爲可設置在地板上的 固定部。於封合裝置1的前方,設有下端是固定在固定平 台2上朝上方垂直延伸的前方支撐框3 a、3b。前方支撐 框3 a和前方支撐框3b,對上述旋轉中心線〇 1是成左右 等間隔的配置,並且是設置成互相平行。 於封合裝置1的後方,也設有與上述前方支撐框 3a、3b相同的後方支撐框4a、4b。於第2圖中,是可看 到一方的後方支撐框4a,另一方的後方支撐框4b,是位 於第1圖所示前方支撐框3b的裏側。後方支撐框4a、 -11 - (9) 1265804 r » 4b,各別的下端是固定在上述固定平台2上,朝上方延伸 成互相平行。 如第1圖所示,前方支撐框3 a的上端和前方支撐框 3 b的上端,是由前方支撐聯結板5聯結著,同樣地後方 支撐框4a的上端和後方支撐框4b的上端,也是由支擦聯 結板6聯結著。 在前方支撐框3a和前方支撐框3b之間,設有前方軸 承架7,於該前方軸承架7保持著軸承8。同樣地,在後 方支撐框4a和後方支撐框4b之間也設有後方軸承架9, 於後方軸承架9保持著軸承1 〇。 旋轉軸1 1的前端部1 1,是旋轉自如地支撐在上述軸 承8,旋轉軸1 1的中間部Π b,是旋轉自如地支撐在上述 軸承1 0。上述旋轉中心線〇 1,是位於該旋轉軸1 1的軸 中心位置。 在前方支撐框3 a、3 b和後方支撐框4 a、4b之間,設 有被固定在上述旋轉軸1 1上的旋轉體1 5。上述旋轉體1 5 的外圍面1 5 a,對上述旋轉中心線〇 1是成指定半徑的圓 周面。 於上述旋轉體1 5的外圍面1 5 a,設有做爲第1夾持 構件發揮功能的砧1 6。砧1 6,是沿著上述外圍面1 5 a以 一定間距配列著。於該實施形態中,在旋轉體1 5上是設 有6個砧1 6,砧1 6對上述旋轉中心線01是成6 0度的配 列角度。 6個砧16均爲相同構造且爲相同尺寸’如第2圖所 -12- (10) 1265804 « % 示,砧1 6,朝旋轉中心線Ο 1的方向具有寬度尺寸W1, 朝旋轉圓周方向具有長度L1。此外,如第1圖所示,各 個砧1 6的封合相向面1 6 a (第1封合相向面),是朝向 旋轉體的1 5的法線方向外側,封合相向面1 6 a,從旋轉 體1 5的外圍面1 5 a僅突出爲突出尺寸 Η (參照第1 圖)。另外,各個砧1 6的封合相向面1 6a,是與以旋轉 中心線0 1爲中心的指定半徑圓筒面成一致。 如第4圖及第5圖所示,於站1 6的封合相向面1 6 a 上’設有 2個封合圖案17a、17b。該封合圖案17a、 1 7b,是從封合相向面1 6a朝法線方向突出形成著。於第 5圖中,將封合相向面1 6a朝圓周方向分爲二的中心線是 以03來表示。封合圖案17a和封合圖案17b,是對中心 線〇3成對稱形狀,一方的封合圖案1 7a與中心線3間的 距離和另一方封合圖案1 7b與中心線3間的距離是爲相 同。 但是,封合圖案17a和封合圖案17b的圓周方向間 隔,於前方是爲較寬尺寸L2,於後方是爲較窄尺寸L3, 各封合圖案17a、17b,對上述中心線03是成傾斜著。 封合圖案17a、17b是形成爲以一定的寬度尺寸延伸 的帶狀突起表面,於該表面上,凸部和凹部是朝各圖案的 長度方向交替形成著,以對工作件形成有轉印該凹凸不平 圖案的封合部。 如第2圖所示,旋轉軸1 1的後部1 1 c,是比後方軸 承架9還往後方延伸著,於該後部1 1 c上固定著齒形皮帶 -13- (11) 1265804 > * 輪1 2。來自於未圖示的馬達動力是中介著齒形皮帶傳至 上述齒形皮帶輪1 2,使旋轉體1 5於第1圖中能以一定的 角速度往逆時針方向進行旋轉。於各砧1 6,內藏有筒形 加熱器,以對砧1 6進行加溫。此外,於各砧1 6設有溫度 感測器,使爲筒形加熱器所加熱的砧1 6的溫度能夠測 出。根據該測定溫度來控制筒形加熱器,使砧1 6維持成 設定溫度。 如第2圖所示,於旋轉軸1 1的後部丨丨c設有供電控 制手段1 3。於旋轉軸1 i的後部1 1 c的外圍面設有導電體 的匯流環1 4 a,於固定側設有可滑動該匯流環丨4 a的滑動 器1 4b。上述筒形加熱器和溫度感測器是導通於上述匯流 環1 4a,供電控制手段1 3是導通於滑動器1 4b。於旋轉體 1 5是旋轉時,電力會從上述供電控制手段1 3中介著上述 滑動器1 4b及匯流環1 4a供給至筒形加熱器,此外來自於 溫度感測器的溫度側傳訊號會傳給上述供電控制手段 13 〇 上述前方軸承架7,是可往上下方向移動自如地支撐 在前方支撐框3 a、3 b間,後方軸承架9,也是可往上下 方向移動自如地支撐在後方支撐框4a、4b間。如第1圖 及第2圖所示,於前方支撐聯結板5的下面設有止動器 2 1,同樣地於後方支撐聯結板6的下面也設有止動器 22 ° 於固定底板2的前方部份,設有可成爲加壓力設定手 段的流體汽缸(氣缸)23,該流體汽缸23的進退桿24的 -14 - (12) 1265804
Μ I 上端是聯結於上述前方軸承架7。於固定底板2的後方部 份,同樣地設有可成爲加壓力設定手段的流體汽缸(氣 缸)25,該流體汽缸25的進退桿26的上端是聯結於上述 後方軸承架9。 藉由上述流體汽缸2 3使前方軸承架7推向止動器 21,藉由上述流體汽缸2 5使後方軸承架9推向止動器 2 2,以決定旋轉軸1 1的旋轉中心線〇 1的高度位置及傾 斜度。另,上述止動器21和止動器22,是形成爲可各別 調整上下的位置來進行固定。雖是由流體汽缸23、25, 使前方軸承架7推向止動器2 1,使後方軸承架9推向止 動器22,但藉由對上述止動器21、22的高度位置進行微 調’是可微調旋轉軸1 1的旋轉中心線〇1的高度位置及 傾斜度。 於該實施形態中,對工作件封合時的夾持力,是形成 爲可由上述流體汽缸2 3和流體汽缸2 5內的流體壓來進行 設定。再加上,於旋轉體1 5的旋轉速度有所變化時,上 述封合時的夾持力是形成爲能夠改變。因此,於該封合裝 置1中’是設有可改變上述流體汽缸23和流體汽缸25內 的流體壓來進行設定的加壓力控制手段3 0。該加壓力控 制手段3 〇,具有:可對來自於流體泵3 1要供給至各流體 汽23、25中的流體壓進行調整的調整閥32 ;及,可對該 調整閥3 2進行控制的控制部3 3。 上述控制部3 3,是可根據作業者的操作輸入來調整 上述調整閥3 2的同時,具有因應旋轉體1 5的旋轉數可自 -15- 1265804 (13) 動性調整上述調整閥3 2的功能。 如第2圖所示,於後方支撐框4a、4b,支撐體41是 可擺動自如地被支撐著。於上述後方支撐框4a、4b,固 定著固定環4 2,環狀的滾動軸承4 3的內圈是固定在上述 固定環42。於上述支撐體41的底部固定著活動環44,於 該活動環44固定著滾動軸承43的外圈。 藉由上述滾動軸承4 3,使支撐體4 1是轉動自如支撐 著。滾動軸承4 3的外圈的轉動中心是成爲支撐體4 1的轉 動中心〇 2。從第2圖的構造可理解到上述旋轉體1 5的旋 轉中心線〇 1和支撐體4 1的轉動中心Ο 2,是設定成彼此 獨立。因環狀的滾動軸承4 3是固定在後方支撐框4 a、4 b 上,所以上述轉動中心Ο 2雖是設定成不動,但如上述藉 由調整止動器21、22的高度位置,是可上下調整上述旋 轉中心線〇 1的位置。因此,上述轉動中心Ο 2,是形成爲 與上述旋轉中心線〇1是成一致位置,或者是以幾乎與上 述旋轉中心線Ο1成一致的狀態位於旋轉中心線〇1的附 近。 於上述支撐體41的上部固定著托座45,於該托座45 上搭載著第2夾持構件4 6。該第2夾持構件4 6,具有: 由振盪器及增幅器等所形成的超音波振動的產生裝置 47 ;及可施加上述超音波振動的超音波喇叭48。 如第4圖及第5圖所示,上述超音波喇卩八4 8的封合 相向面48a (第2封合相向面),是與旋轉體15的外圍 面1 5 a及砧1 6的封合相向面1 6 a成相向。超音波喇叭4 8 -16- (14) «I * 1265804 的封合相向面 4 8 a,具有至少可與砧 1 6的封合圖案1 7 a 和17b當中一方成面對面的面積,封合相向面48a,是开多 成爲幾乎平行於與旋轉體1 5的外圍面1 5 a成接觸的面。 上述第2夾持構件4 6,是對托座4 5成可調整固定位 置,以形成爲可調整砧1 6的封合相向面1 6a和超音波喇 叭4 8的封合相向面4 8 a的相向間隔5 (參照第3圖)。 於該實施形態中,如上述,是藉由前方軸承架7被推向止 動器21’後方軸承架9被推向止動器22,來對上述止動 器2 1、22的高度位置進行微調整,使旋轉中心線〇 1的 高度位置及傾斜度成爲能夠進行微調整。但是,也可在該 傾斜度的調整以外,增加可改變第2夾持構件4 6對托座 45的安裝角度,使兩封合相向面i6a和封合相向面48 a 的相向角度得以調整。 如第1圖所示,在從上述固定平台2延伸出來的固定 板(未圖示)和上述支撐體41之後設有往復驅動手段 5〇 〇 於上述往復驅動手段5 0中,聯結桿5 1的前端部是中 介著聯結軸52轉動自如地聯結於上述支撐體4 1。於上述 固定板上。軸5 3是轉動自如被支撐著,於該軸5 3上固定 著驅動旋轉體54。上述聯結桿5 1的底部,是中介著聯結 軸55轉動自如地支撐在上述驅動旋轉體54上。 上述往復驅動手段5 0,是可將驅動旋轉體5 4的旋轉 蓮動轉換成上述支撐體的往復運動的曲柄機構。於驅動旋 轉體54的軸53,固定著齒形皮帶輪,旋轉動力是中介著 -17- 1265804 (15) 齒形皮帶傳達至上述齒形皮帶輪。使驅動旋轉體54和上 述旋轉體1 5是彼此成同期進行旋轉。例如共用馬達的動 力,是對驅動旋轉體54和旋轉體1 5各別進行減速施加, 或者,是將旋轉體1 5驅動用的馬達和在驅動旋轉體5 4用 驅動用的馬達各別設置,然後根據一方馬達旋轉數的檢測 訊號來控制另一方馬達。 其結果,旋轉體1 5的旋轉數和驅動旋轉體5 4的旋轉 數是經常同期成一定的比受到驅動。當設置在旋轉體15 上的砧16的數量爲N ( N爲1以上)時,則在旋轉體1 5 進行1旋轉的期間,驅動旋轉體54會同期成進行N旋 轉。於該實施形態中,上述N爲「6」。 於第1圖和第3圖中,旋轉體1 5是以一定的角速度 往逆時針方向受到旋轉驅動,當驅動旋轉體5 4是以一定 的角速度往逆時針方向受到旋轉驅動時,支撐體4 1是以 其轉動中心02爲支點進行擺動運動。此時,超音波喇叭 4 8的封合相向面4 8 a,是沿著旋轉體1 5的外圍面的圓周 方向上所沿著的圓周面軌跡進行往復移動。 如第3圖所示,於第2夾持構件46的往復移動中, 可使上述超音波喇叭4 8的封合相向面4 8 a於移動方向分 爲二的中心Oa,是對垂直基準線Oy成往逆時針方向是爲 + 0角度範圍,往時針方向是爲-0角度範圍的移動。如第 1圖所示,若將驅動旋轉體54的旋轉中心至聯結軸55的 中心爲止的半徑R成爲可改變時,就可對上述擺動角度0 進行調整,此外使上述半徑R進行變化,也可改變砧16 -18- 1265804 .. (16) 的封合相向面1 6 &和超音波喇β八4 8的封合相向面4 8 &的 相對速度。 此外,設有可對上述驅動旋轉體54的旋轉相位進行 調整的相位設定手段。其例如:改變驅動旋轉體54於旋 轉方向固定在軸5 3上的位置就可實現。在驅動旋轉體5 4 以等角速度進行旋轉時,砧16的封合相向面16a的中心 Oa的速度大小,大致是按照三角函數曲線來進行變化, 但因設有上述相位設定手段,所以可使封合相向面1 6a的 中心Oa的速度爲最大時的位置,是與上述垂直基準線〇y 成一致,或設定成在這前後。 如第1圖所示,於旋轉體1 5的導入側設有導入側滾 筒6 1,於旋轉體1 5的排出側設有排出側滾筒62,延伸成 帶狀的工作件W,是被懸掛在上述導入側滾筒61上,以 指定的捲繞角度捲繞在旋轉體1 5的外圍面,然後從排出 側滾筒62排出。 其次,對上述封合裝置1所使用的封合方法進行說 明。 第6 ( B )圖中所示的軟質工作件W,其箭頭符號方 向爲MD ’上述MD是經導入側滾筒61供給至旋轉體15 的外圍面,然後是從排出滾筒6 2拉出來。該軟質工作件 W ’是在製造褲型用後即棄式紙尿褲時的中間製造物,由 封合裝置1使該軟質工作件W上形成有封合部s a、S b 後’藉由在封合部Sa和封合部Sb的中間進行切斷以獲得 各個用後即棄式紙尿褲。 -19- 1265804 (17) 於排出側滾筒62的前方,設有一對搬運滾筒,上述 軟質工作件W是按照上述搬運滾筒的定速旋轉朝MD方 向以一定速度排出。上述搬運滾筒,是與旋轉體15同期 受到旋轉驅動,軟質工作件W的搬運速度。是設定成與 石占1 6的封合相向面1 6 a的圓周速度V 0成一致。 第6 ( A )圖,是表示軟質工作件W形成前所展開的 帶狀體70。該帶狀體70,其第1薄層72是位於圖示背 側,在第1薄層72上重疊著第2薄層71。第1薄層72, 其寬度尺寸是比第2薄層71還寬。於一方側70A,第i 薄層72的側緣72a是摺疊成重疊在第2薄層71上。同樣 地,於另一方側70B第1薄層72的側緣72b也是摺疊成 重疊在第2薄層71上。 於帶狀體7 〇的一方側7 〇 A,在第1薄層7 2和第2薄 層7 1之間,夾著複數條腰帶75 ;於帶狀體70的另一方 側70B,在第1薄層72和第2薄層71之間,夾著腰帶 76。又於第1薄層72和第2薄層71之間,設有腿帶77 和7 8。腿帶7 7和腿帶7 8,是分別以彎曲成波形的狀態往 帶狀體的搬運方向延伸。接著,在上述腿帶77和腿帶78 所包圍的區域’形成有可成爲褲型用後即棄式紙尿褲的腳 插通部的腿孔74。 上述第1薄層72和第2薄層71,是具透氣性並且具 液遮擋性,並且是能夠由熱來進行熔合的材質。例如:以 熱塑性的合成纖維形成的紡粘型不織布或融噴不織布,或 是上述不織布的層疊體。或者’也可以是上述第1薄層 -20- (18) 1 · 1265804 72和第2薄層71的一方爲上述不織布,另一方爲透氣性 的熱塑性塑膠薄膜。 於上述第2薄層71的表面,在上述腿孔74和腿孔 74之間設有上述液吸收體73。該液吸收體73是爲砂鐘形 或長方形,朝上述帶狀體7 0的搬運方向隔著一定間隔配 置著。液吸收體73,是爲粉碎紙漿、粉碎紙漿和吸水性 聚合物(SAP )的混合體、親水性不織布的層疊體、氣流 成網紙漿等。這些吸收材73,是以透液性的上罩薄層包 著。接著,各個液吸收體73,是由熱熔型黏合劑等黏合 於上述第2薄層71的表面。 上述上罩薄層,是以短纖維網眼不織布、熱風穿透不 織布、形成有透液孔的塑膠薄膜等形成。 第6 ( A )圖中所示的帶狀體70是順著延伸在長度方 向的中心線〇w-Ow,使液吸收體73朝內側摺成2片重疊 以形成爲第6 ( B )圖所示連續的軟質工作件W。 封合裝置1的上述旋轉體1 5的外圍面1 5a上所設置 的複數上述砧1 6的圓周方向配列間距,是與上述軟質工 作件W的液吸收體73朝MD方向的配列間距成一致。此 外,在上述軟質工作件W上成鄰接的液吸收體73和液吸 收體73之間不具有液吸收體73的部份,其往MD方向的 長度尺寸Lw,是形成爲要比上述砧16往圓周方向的長度 尺寸L1還長。 因此,如第4圖所示,當軟質工作件W供給在旋轉 體1 5的外圍面時,上述液吸收體7 3,在砧1 6和砧1 6之 -21 - 1265804 . (19) 間,是位於旋轉體1 5的外圍面1 5 a的表面’於沾1 6的封 合相向面16a上,第1薄層72和第2薄層71’以及腰帶 7 5、7 6和腿帶7 7、7 8,都是以重疊的狀態設置著。 如第4圖所示,從旋轉體1 5的外圍面1 5 a所突出的 石占1 6的封合相向面1 6 a突出高度尺寸Η ’雖是與軟質工 作件W的液吸收體7 3存在部份的厚度Tw 1相同但卻設定 成是這以上較大的尺寸。因此’軟質工作件w具有液吸 收體7 3的部份,是設有成不會突出砧1 6的封合相向面 1 6 a進行移動的圓周面軌跡,或是設定成即使是突出也僅 是微小尺寸的突出。 在旋轉體1 5進行旋轉使第2夾持構件46進行往復運 動時,軟質工作件W不具有液吸收體7 3的部份,雖是爲 砧1 6的封合相向面1 6 a和超音波喇叭4 8的封合相向面 48a所夾持著,但此時的封合相向面 16a和封合相向面 4 8 a的間隔5,是根據上述軟質工作件W不具有液吸收體 73的部份的厚度Tw2來進行微調整。該微調整,是藉由 改變上述止動器2 1和22的高度位置來執行。此外,也可 藉由改變第2夾持構件46在托座45上的設置高度來進行 微調整。藉由該微調整,使封合相向面1 6 a和封合相向面 4 8a的間隔δ得以設定成比上述厚度Tw2還小。 在封合裝置1封合動作開始之前的停止狀態下,對流 體汽缸2 3和流體汽缸2 5的內部流體壓進行減壓,使前方 軸承架7和後方軸承架9分別下降離開止動器2 1、22。 藉此使旋轉軸11沿著垂直基準線〇y進行下降,使旋轉 -22- (20) 1265804 · 體1 5的外圍面1 5 a和超音波喇叭4 8的封合相向面4 8 a的 間隔變寬。於第3圖中’上述旋轉軸1 1的下降距離是以 h表示。 將軟質工作件W設定成是從導入側滾筒6 1被捲繞至 旋轉體1 5的外圍面1 5 a,然後從排出側滾筒6 2排出,當 使流體汽缸2 3和流體汽缸2 5的內部流體壓變高時,前方 軸承架7會被加壓往止動器2 1,後方軸承架9會被加壓 往止動器22,使旋轉軸1 1定位。 當封合動作執行開始時,旋轉體1 5是被驅動成往逆 時針方向(Cc w )以一定角速度進行旋轉,贴1 6的封合 相向面1 6 a是以一定的圓周速度V 0進行持續迴轉。另外 驅動旋轉體54是往逆時針方向( CCW)以一定角速度進 行旋轉,當該旋轉運動從聯結桿5 1傳至支撐體4 1時,支 撐體4 1會以轉動中心02爲支點進行往復運動。 超音波喇叭4 8的封合相向面4 8 a,是邊與砧1 6的封 合相向面1 6 a之間保持著上述間隔(5,邊沿著圓周面軌道 進口往復運動。此時的超音波喇叭48的封合相向面48a 的中心0 a的圓周速度Vt,是按照三角函數進行變化,圓 周速度Vt大致爲(A· sin(|) ) 。Φ爲驅動旋轉體54的旋轉 角度,A爲視軸5 5的旋轉半徑R等而決定的定數。即, 圓周速度V t是與時間一起進行變化的可變速度。超音波 喇叭4 8的封合相向面4 8 a中心Ο a的速度,是在往旋轉體 1 5的旋轉方向進行移動時爲+ V t,往上述旋轉方向反向進 行移動時爲-Vt。 -23- (21) 1265804 · 在上述超音波喇叭4 8往逆時針方向進行移動的行程 一部份的時間中,軟質工作件W是爲砧1 6的封合相向面 1 6 a和超音波喇D八4 8的封合相向面4 8 a所夾持,也只有 在該夾持狀態的時間中執行封合動作。 第4圖,是圖示著超音波喇卩八4 8往逆時針方向進行 移動的同時,軟質工作件W是爲砧1 6的封合相向面1 6 a 和超音波喇叭4 8的封合相向面4 8 a所夾持的瞬間。此時 的「封合相向面1 6a及與其一起進行移動的軟質工作件W 和上述超音波喇叭4 8的封合相向面4 8 a的」相對速度是 爲VO-Vt。上述軟質工作件W和上述超音波喇叭48的封 合相向面48a,是邊以上述相對速度v〇-Vt進行彼此滑動 的同時,執行封合動作。 如第4圖和第5圖所示,於站1 6的封合相向面1 6 a 上設有一對封合圖案1 7 a和1 7 b,於軟質工作件W,是形 成有一方封合圖案1 7 a所轉印的封合部S a和另一方封合 圖案1 7b所轉印的封合部Sb。 於上述往復驅動手段5 0,設有可對驅動旋轉體5 4的 旋轉相位進行調整的旋轉相位設定手段。藉由用該旋轉相 位設定手段來設定旋轉相位,使超音波喇叭4 8的上述速 度+ V t要爲最大的位置,是能夠按照封合圖案來設定成任 意位置。 於該實施形態中,在砧1 6的封合相向面1 6 a上封合 圖案1 7a和1 7b是於圓周方向隔著間隔配置,並且,封合 圖案1 7 a和封合圖案1 7 b是對中心線〇 3成對稱配置。因 -24 - 1265804 (22) 此,是設定成當超音波喇叭48的封合相向面48a的中心 〇a到達封合圖案17a和封合圖案17b的中間時上述圓周 速度+Vt會成爲最大。更好的是,驅動旋轉體54的旋轉 相位的決定,是取決於在中心〇 a與上述中心線0 3成一 致(與垂直基準線Oy成一致)的瞬間可使上述圓周速度 + Vt成爲最大値。
設定成如此時,如第4圖所示,在封合相向面4 8 a的 中心Oa到達垂直基準線Oy當前,上述中心Oa會與封合 圖案17a成一致,使軟質工作件W被夾持在封合圖案17a 和封合相向面48a間以形成封合部Sa。然後,在封合相 向面 48a的中心 Oa往逆時針方向超越垂直基準線 Oy 時,上述中心Oa會與封合圖案17b成一致,使軟質工作 件W被夾持在封合圖案1 7b和超音波喇叭4 8間以形成封 合部Sb。
於此,若事先設定好當中心Oa位於封合圖案1 7a和 封合圖案17b的中間時,圓周速度+Vt是成爲最大値,就 能夠使中心〇a與封合圖案17a成相向時的相對速度V0-Vt和中心Oa與封合圖案17b成相向時的相對速度V0-Vt 之間的差異變得微小。最好是事先設定成當中心〇a與垂 直基準線Oy成一致時上述圓周速度+Vt是爲最大値,如 此一來,就能夠使中心0 a與封合圖案1 7 a成相向時的相 對速度V0-Vt和中心〇a與封合圖案17b成相向時的相對 速度V0-Vt爲相等。 於該狀況時,最好是,將封合相向面48a的中心Oa -25- 1265804 (23) 與垂直基準線Oy成一致時的圓周速度+Vt,與封合相向 面1 6 a的圓周速度V 0成一致。更好的是,若將封合相向 面4 8 a的中心0 a與垂直基準線〇 y成一致時的圓周速度 + Vt,形成爲要比封合相向面16a的圓周速度V〇還稍大 時,則能夠製造出中心Oa與封合圖案1 7a成相向時的相 對速度V 0 - V t和中心〇 a與封合圖案1 7 b成相向時的相對 速度V0-Vt均爲零的瞬間。 此外,封合相向面 1 6 a和封合相向面 4 8 a的的間隔 5,若於事先是設定成要比軟質工作件W的封合部形成 部份的厚度Tw2還來得足夠小時,則能夠使封合相向面 1 6 a和封合相向面4 8 a對軟質工作件W進行夾持時的夾持 壓力,是由上述流體汽缸23和流體汽缸25的流體壓來設 定。於該狀況時,藉由加壓力控制手段3 0來事先設定好 流體汽缸23內的流體壓和流體汽缸25內的流體壓,是可 經常使封合相向面16a和封合相向面48a以穩定的夾持壓 力來夾持軟質工作件W,使封合部Sa、Sb的品質容易保 持成一定的品質。 其次,就該封合裝置而言,是事先將軟質工作件W 爲砧1 6的封合相向面1 6 a和超音波喇叭4 8的封合相向面 4 8 a所夾持時的封合相向面1 6 a和封合相向面4 8 a的相對 速度爲V〇-Vt,使封合相向面16a和封合相向面48a對軟 質工作件W施加封合用能量的時間能夠盡量變長。但 是,若爲了要提高封合處理速度而提高旋轉體15的旋轉 數及驅動旋轉體5 4的旋轉數時,終究還是會使超音波喇 -26- (24) 1265804 1 癱 叭48對軟質工作件W施加封合用能量的時間變短。 因此,於該封合裝置1中,旋轉體1 5旋轉數的變化 是由控制部3 3來辨識,按照上述旋轉數來調整調整閥 32,使流體汽缸23和流體汽缸25的內部流體壓得以改 變。或者是,也可按照旋轉數的變化由作業者的操作來進 行改變。藉此以在旋轉體1 5的旋轉數及驅動旋轉體54的 旋轉數變高時,增加封合相向面1 6a和封合相向面48a對 軟質工作件W的夾持壓力,反之在旋轉數變低時降低上 述夾持壓力,使上述夾持壓力能夠隨著超音波喇叭48對 軟質工作件W施加封合用能量的時間改變來設定成最佳 狀態。 此外於砧1 6設有圓筒加熱器和溫度感測器,使砧1 6 的溫度經常控制成最佳狀態。因此,於封合動作中砧1 6 的溫度不致於太低以防止封合用的熱離開砧1 6造成封合 瑕疵,或者砧1 6的溫度不致於太高以防止熱塑性樹脂容 易融熔附著在封合圖案17a、17b上等所造成的不方便。 於該封合裝置中,如第4圖所示,在超音波喇叭48 往逆時針方向進行移動時,軟質工作件W是由位於旋轉 方向前方的封合圖案1 7 a和超音波喇叭4 8的封合相向面 4 8 a所夾持,邊封合相向面4 8 a和軟質工作件W是在進行 滑動的同時進行封合以形成封合部Sa。接著這之後’軟 質工作件 W是立刻由下一個封合圖案 1 7 b和封合相向面 4 8a所夾持,使軟質工作件W和封合相向面48a是在進行 滑動的同時進行封合以形成封合部Sb。然後,超音波喇 -27- 1265804 . · (25) 叭4 8的封合相向面4 8 a,雖是以速度-Vt往時針方向進行 移動,但此時封合相向面4 8 a是離開砧1 6,於沒有砧1 6 的區域中對軟質工作件W的表面進行滑動的同時邊返回 往時針方向。在下一次封合相向面4 8 a往時針方向進行移 動時,由輪到下一次迴轉的砧1 6和超音波喇叭4 8重覆第 4圖示的封合動作。 因此,於超音波喇叭4 8上即使是經常持續施加有超 音波振動,但也只有在由封合圖案17a、17b和超音波喇 叭4 8夾持著軟質工作件W時才進行封合動作。另,也可 於事先檢測出旋轉體1 5的旋轉相位,控制成是在由封合 圖案17a、17b和超音波喇叭48夾持著軟質工作件W時 才於超音波喇叭4 8上施加有超音波振動。 此外,也可構成爲於上述垂直機準線〇y的前後設有 可對軟質工作件W的厚度進行檢測的光學感測器等檢測 手段,以在軟質工作件W的液吸收體73要載置在砧16 的封合相向面1 6a上的搬運異常產生時,能夠立刻啓動調 整閥3 2,降低流體汽缸2 3和流體汽缸2 5的內部流體 壓,使旋轉軸1 1下降,即刻能夠防止軟質工作件W的搬 運塞車等。 藉由上述封合動作,如第6(B)圖所示在軟質工作 件W上形成有的封合部Sa和封合部Sb後,是由設置在 封合裝置1後段的切斷裝置使軟質工作件W在封合部S a 和封合部Sb之間的切入線C1被切斷,以分開成各個褲 型的用後即棄式紙尿褲。 -28- (26) 1265804 另。於本發明中,也可構成爲於旋轉體1 5上設有做 爲第1夾持構件的超音波喇叭4 8,於支撐體4 1上設有做 爲第2夾持構件的砧丨6。此外,第1夾持構件和第2夾 持構件,並不限於超音波喇叭和砧,只要是熱封合用的壓 頭等’可對工作件施加封合用能量的構件均可做爲第1夾 持構件和第2夾持構件。另外,也可於上述往復驅動手段 5 〇設有旋轉凸輪,以旋轉凸輪來控制聯結桿5 1的動作。 另。也可藉由上述封合裝置1對:不織布和不織布、 薄膜和薄膜、或者不織布和薄膜進行封合,將該封合後的 複合材料供給至用後即棄式紙尿褲或衛生棉、其他製品的 製造步驟。 〔發明效果〕 如以上所述根據本發明時,可在連續進行旋轉的旋轉 體邊搬運軟質工作件的同時,降低第1夾持構件及工作件 與第2夾持構件的相對速度來進行封合動作。因此,就能 夠對工作件充分施加長時間的封合用能量,也可使旋轉體 進行高速旋轉,以高速來執行封合處理。 【圖式簡單說明】 第1圖爲表示本發明封合裝置的實施形態正面圖。 第2圖爲上述封合裝置的左側面圖。 第3圖爲對封合裝置的動作狀態進行說明時從正面看 的說明圖。 -29- 1265804 (27) 第4圖爲表示封合裝置的封合動作放大剖面圖。 第5圖爲表示砧的封合相向面和超音波喇叭的透視 圖。 第 6 ( A )圖表示帶狀體的展開狀態透視圖,第 6 (B )圖表示上述帶狀體成摺疊的軟質工作件透視圖。 〔圖號說明〕 1 :封合裝置 3 a、3 b :前方支撐框 4a、4b:後方支撐框 7 I前方軸承架 8 :軸承 9 :後方軸承架 1 0 :軸承 1 1 :旋轉軸 1 5 :旋轉體 1 5 a :外圍面 1 6 :砧(第1夾持構件) 1 6a :封合相向面(第1封合相向面) 17a、17b:封合圖案 21、22 :止動器 3 0 :加壓力設定手段 3 2 :調整閥 41 :支撐體 -30- (28) 1265804 43 :環狀的滾動軸承 4 5 :托座 46 :第2夾持構件 4 8 :超音波喇叭 4 8 a :封合相向面(第2封合相向面) 5 0 :往復驅動裝置 5 1 :聯結桿 54 :驅動旋轉體 -31 -

Claims (1)

  1. 1265804 拾 申請專利範圍 第93 1 08903號專利申請案 中文申請專利範圍修正本 民國94年7月I4日修正 1·一種封合裝置,具備有:具第1封合相向面的第i 夾持構件、及具第2封合相向面的第2夾持構件;熱塑性 軟質工作件,是由上述第1封合相向面和第2封合相向面 夾持著來進行封合的封合裝置,其特徵爲: 上述第1夾持構件,是將第1封合相向面朝法線方向 的外側而設置在旋轉體的外周部,上述第2夾持構件,其 第2封合相向面是以面朝著上述第1封合相向面的狀態被 支撐在支撐體上; 此外,設有··可使上述旋轉體旋轉的旋轉驅動手段、 以及驅動上述支撐體,使上述第2封合相向面可沿著上述 第1封合相向面的迴轉軌跡上所沿著的圓周面軌跡進行往 復移動的往復驅動手段; 在上述第1夾持構件和上述第2夾持構件往同方向進 行移動時,上述軟質工作件是由上述第1封合相向面和第 2封合相向面夾持著進行封合。 2 ·如申請專利範圍第1項所述之封合裝置,其中,當 設置在旋轉體上的上述第1夾持構件的數量爲N時,則 在上述旋轉體進行1次旋轉的期間,上述第2夾持構件會 進行N週期的往復移動。 3 ·如申請專利範圍第1項所述之封合裝置,其中,旋 1265804
    月曰修(更)正 替换頁 轉體是以等角速度受到驅動,使第1封合相向面以一定的 圓周速度νο進行移動,與上述第1封合相向面往同方向 進行移動時的第2封合相向面的圓周速度V t是根據時間 來進行變化,在以相對速度VO-Vt進行移動的第1封合相 向面和第2封合相向面之間,上述軟質工作件是被夾持著 進行封合。 4.如申請專利範圍第2項所述之封合裝置,其中,旋 轉體是以等角速度受到驅動,使第1封合相向面以一定的 圓周速度V0進行移動,與上述第1封合相向面往同方向 進行移動時的第2封合相向面的圓周速度Vt是根據時間 來進行變化,在以相對速度VO-Vt進行移動的第1封合相 向面和第2封合相向面之間,上述軟質工作件是被夾持著 進行封合。 5 ·如申請專利範圍第3項所述之封合裝置,其中,於 第1夾持構件或第2夾持構件上,設有在旋轉體圓周方向 隔著間隔的封合圖案,上述圓周速度 Vt的相位是設定 成:當上述第2夾持構件的中心是位於兩封合圖案的中間 位置時,上述相對速度VO-Vt爲最小。 6 ·如申請專利範圍第4項所述之封合裝置,其中,於 第1夾持構件或第2夾持構件上,設有在旋轉體圓周方向 隔著間隔的封合圖案,上述圓周速度Vt的相位是設定 成:當上述第2夾持構件的中心是位於兩封合圖案的中間 位置時,上述相對速度V〇-Vt爲最小。 7 .如申請專利範圍第3項所述之封合裝置,其中,上 1265804 (3) 卜件?月V日修(更)正替換頁 述支撐體,其轉動中心是與旋轉體的旋轉中心成一致或幾 乎成一致地進行擺動動作’上述往復驅動手段,是可將等 速旋轉運動轉換成上述支撐體的往復運動的曲柄機構。 8 ·如申請專利範圍第4項所述之封合裝置,其中,上 述支撐體,其轉動中心是與旋轉體的旋轉中心成一致或幾 乎成一致地進行擺動動作,上述往復驅動手段,是可將等 速旋轉運動轉換成上述支撐體的往復運動的曲柄機構。
    9 ·如申請專利範圍第1、2、3、4、5、6、7或8項所 述之封合裝置,其中,上述旋轉體的旋轉軸,設有:可朝 上述第2夾持構件的方向進行移動,對上述旋轉體朝第2 夾持構件進行加壓,以對第1封合相向面和第2封合相向 面所形成的軟質工作件夾持力進行設定的加壓力設定手 段。
    Ϊ 0 ·如申請專利範圍第9項所述之封合裝置,其中, 用上述加壓力設定手段所設定的上述夾持力,是形成爲可 因應旋轉體的旋轉速度來改變調整。 1 1 · 一種封合方法,是由:具第1封合相向面的第j 夾持構件、及具第2封合相向面的第2夾持構件,來夾持 著熱塑性軟質工作件進行封合的封合方法,其特徵爲: 是將上述第1夾持構件使其第丨封合相向面朝迴轉軌 跡的法線方向外側進行迴轉,並且將上述軟質工作件沿著 上述第1夾持構件的迴轉軌跡進行供給,使第丨封合相向 面和軟質工作件一起進行移動,是將上述第2夾持構件使 其第2封合相向面與上述第丨封合相向面成相向,沿著第 -3 - 1265804 (4) 靜1月丨怍修(更)正替換頁 1封合相向面的迴轉軌跡進行往復移動; 是將上述第1封合相向面的圓周速度 v 〇 ’將第2封合相向面移動往與第1封合相 向爲同方向的速度Vt及與此爲反方向的速虔 根據時間來進行變化的可變速度; 在上述第1夾持構件和第2夾持構件往同 動時,是於以相對速度V0-Vt進行移動的第1 和第2封合相向面之間,夾持著上述軟質工作 合。 12·如申請專利範圍第1丨項所述之封合力 於第1夾持構件或第2夾持構件上,設有:於 著間隔的封合圖案,上述圓周速度Vt的相位 當上述第2夾持構件的中心位於兩封合圖案 時,上述相對速度V0-Vt是爲最小。 1 3 ·如申請專利範圍第1 1或]2項所述之 其中,是使用可將等速旋轉運動轉換成上述支 運動的曲柄機構,來使上述第2夾持構件進行 1 4 ·如申請專利範圍第1 1或1 2項所述之 其中,以等間距進行迴轉的的上述第1夾持精 N時,則在上述旋轉體進行1次旋轉的期間, 來進行上述第2夾持構件的往復移動。 1 5 ·如申請專利範圍第1 1或1 2項所述5 其中,上述軟質工作件,是具有:於其供給戈 配置的液吸收體、以及支撐著上述液吸收體 爲一定速度 向面移動方 :-vt均是爲 方向進行移 封合相向面 件來進行封 法,其中, •圓周方向隔 是設定成: 的中間位置 .封合方法, :撐體的往復 往復移動。 .封合方法, ί件的數量爲 是以Ν週期 1封合方法, 「向隔著間隔 可熔合的薄 -4- 1265804
    層;於上述液吸收體和液吸收體之間,重疊著上述薄層’ 然後由上述第1封合相向面和第2封合相向面夾持進行封 合。
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