DE1479841B2 - Vorrichtung zum trennschweissen von uebereinanderliegenden folien aus thermoplastischem werkstoff - Google Patents

Vorrichtung zum trennschweissen von uebereinanderliegenden folien aus thermoplastischem werkstoff

Info

Publication number
DE1479841B2
DE1479841B2 DE19641479841 DE1479841A DE1479841B2 DE 1479841 B2 DE1479841 B2 DE 1479841B2 DE 19641479841 DE19641479841 DE 19641479841 DE 1479841 A DE1479841 A DE 1479841A DE 1479841 B2 DE1479841 B2 DE 1479841B2
Authority
DE
Germany
Prior art keywords
jaws
radiant heating
foils
heating element
welded
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
DE19641479841
Other languages
English (en)
Other versions
DE1479841A1 (de
Inventor
Seymour Tomes River N J Zelnick (V St A)
Original Assignee
Weldotron Corp , Newark N J (V St A)
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
Priority claimed from US30764763 external-priority patent/US3330716A/en
Application filed by Weldotron Corp , Newark N J (V St A) filed Critical Weldotron Corp , Newark N J (V St A)
Publication of DE1479841A1 publication Critical patent/DE1479841A1/de
Publication of DE1479841B2 publication Critical patent/DE1479841B2/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/106—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined using flames coming in contact with at least one 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
    • 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
    • B29C65/1429—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 characterised by the way of heating the interface
    • B29C65/1445—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 characterised by the way of heating the interface heating both sides of the joint
    • 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
    • B29C65/1429—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 characterised by the way of heating the interface
    • B29C65/1448—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 characterised by the way of heating the interface radiating the edges of the parts to be joined, e.g. for curing a layer of adhesive placed between two flat parts to be joined, e.g. for making CDs or DVDs
    • 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
    • B29C65/1429—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 characterised by the way of heating the interface
    • B29C65/1464—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 characterised by the way of heating the interface making use of several radiators
    • B29C65/1467—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 characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • B29C65/223—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire comprising several heated wires
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/226—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip characterised by the cross-section of said heated wire, resistive ribbon, resistive band or resistive strip, e.g. being triangular
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/229—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for tensioning said heated wire, resistive ribbon, resistive band or resistive strip
    • 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
    • B29C65/743—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • 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
    • B29C65/743—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7439—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for continuously and longitudinally welding and severing webs
    • 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
    • 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
    • B29C65/7471—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 a fluid, e.g. hot gases
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • B29C66/0324—Reforming or reshaping the joint, e.g. folding over
    • B29C66/03241—Flattening
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/01—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular 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
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • B29C66/3262—Shaping the burr, e.g. by the joining tool as after-treatment, e.g. by a separate tool
    • 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
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • 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
    • B29C66/349—Cooling the welding zone on the welding spot
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/81871—General 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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
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    • B29L2031/00—Other particular articles
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    • B29L2031/7128—Bags, sacks, sachets
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    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
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    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/642—Uniting opposed surfaces or edges; Taping by applying heat or pressure using sealing jaws or sealing dies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1313—Cutting element simultaneously bonds [e.g., cut seaming]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)

Description

1 2
Die Erfindung betrifft eine Vorrichtung zum liegenden Folien in einer Stellung vor Inbetriebnahme
Trennschweißen von übereinanderliegenen Folien aus der Vorrichtung zeigt,
thermoplastischem Werkstoff, bei der die Folien zwi- F i g. 2 eine senkrechte Schnittansicht eines Teiles sehen zwei in Abstand liegenden, auf die Folienober- der Vorrichtung nach Fig. 1, aus der die Arbeitsfläche hin und von ihnen weg bewegbaren Klemm- 5 weise der Vorrichtung für das Heizen, Trennen und backenpaaren eingeklemmt und durch ein im Ab- Schweißen der übereinanderliegenden Folien herstand zwischen den Klemmbackenpaaren liegendes, vorgeht,
in Richtung der Folienoberfläche bewegbares Strah- F i g. 3 eine Seitenansicht eines der Heizelemente
lungsheizelement getrennt und unter Wulstbildung und der zugehörigen Halterung,
verschweißt werden. io Fig. 4 eine Ansicht ähnlich der nach Fig. 1, je-
Es ist bekannt (französische Patentschrift doch mit Preßbacken gemäß der Erfindung,
1 317 910), übereinanderliegende Folienlagen aus Fig. 5 eine Schnittansicht längs der Linie 5-5 nach
thermoplastischem Werkstoff zu beiden Seiten eines F i g. 4,
Spaltes einzuklemmen, durch ein in dem Spalt an- F i g. 6 eine Schnittansicht längs der Linie 6-6 nach
geordnetes Strahlungsheizelement aufzutrennen und 15 Fig. 5,
die dabei gebildeten Ränder unter Wulstbildung zu F i g. 7 eine Ansicht eines Teiles der Vorrichtung verschweißen. Dabei bleiben jedoch nach dem Ver- nach F i g. 4 in dem Zustand, in dem die übereinschweißen der Folien die wulstförmigen Schweiß- anderliegenden Folien verschweißt und getrennt und ränder erhalten, deren Festigkeit zu wünschen übrig die verschweißten wulstförmigen Ränder sichtbar läßt, besonders wenn die Verschweißung an stark zo werden,
gefalteten oder geschrumpften Folien durchgeführt F i g. 8 eine Ansicht ähnlich der nach F i g. 7, aus
wird. der die Einstellung der Vorrichtung hervorgeht, wenn
Es ist auch bereits ein Verfahren zum Verschwei- die zusätzlichen Preßbacken betätigt werden, um die
ßen übereinanderliegender Folien an ihrem Rand be- verschweißten wulstförmigen Ränder zu pressen,
kannt (deutsche Patentschrift 872 400), bei dem die 25 Die Vorrichtung nach F i g. 1 weist eine Führung
Schmelzwärme durch ein Strahlungsheizelement er- oder einen Rahmen 10 auf, in dem der Befestigungs-
zeugt wird, das in Abstand von einem Backenpaar kopf 12 gleitend in beliebiger Weise verschiebbar ist.
angeordnet ist, welches zunächst zum Einklemmen Wie hier gezeigt, wird der Befestigungskopf durch
der Folien zwecks Ausbildung des Schweißverlustes Zugfedern 14 in die zurückgezogene Stellung nach
und anschließend zum Zusammenpressen des 30 F i g. 1 bewegt und kann nach unten in die vorge-
Schweißwulstes am Rande der Folien dient. Wenn- schobene Stellung nach F i g. 2 in oder durch einen
gleich für beide Funktionen nur ein Backenpaar ein- Exzenter 16, der an einer Welle 17 befestigt ist. Die
gesetzt wird, hat diese Vorrichtung jedoch den Nach- Welle 17 führt eine Drehbewegung im Rahmen 10
teil, daß die Folien nach dem Verschweißen in eine aus und ist in beliebiger Weise von Hand oder durch
Lage verstellt werden müssen, daß der Schweißwulst 35 einen fremdbetätigten Kurbel- oder Hebelmechanis-
zwischen dem Backenpaar liegt. Diese Verstellung mus (nicht gezeigt) drehbar. Der Befestigungskopf
der Folien ist jedoch im Hinblick auf ein kurzes 12 weist zwei Klemmbacken 18 und 20 auf, die seit-
Arbeitsspiel zur Herstellung einer gepreßten Schweiß- lieh versetzt angeordnet sind und in Längsrichtung
naht nachteilig. entlang der Linien verlaufen, an denen die überein-
Der Erfindung liegt daher die Aufgabe zugrunde, 40 anderliegenden Folien zu verschweißen sind. Jeder eine Vorrichtung zum Trennschweißen von überein- Backen wird von einer Vielzahl von Tragelementen anderliegender Folien aus thermoplastischem Werk- 22 aufgenommen, die längs den Backen versetzt stoff zu schaffen, die das Einklemmen der Folien sind, wobei nur eines der Tragglieder für jeden zur Ausführung der Trennschweißung und anschlie- Backen versetzt sind, wobei nur eines der Tragglieder ßend das Zusammenpressen der Schweißwülste 45 für jeden Backen gezeigt ist. Das Tragglied 22 weist ohne entsprechende Verstellung bzw. Bewegung der ein Führungsbauteil 24 auf, das in einer Gegenaus-Folien ermöglicht. sparung 26 im Führungskopf 12 entgegen der Kraft
Gemäß der Erfindung wird diese Aufgabe bei einer einer Druckfeder 28 gleiten kann.
Vorrichtung der eingangs bezeichneten Art dadurch Wie F i g. 2 zeigt, arbeiten die oberen Klemmgelöst, daß neben den Klemmbacken auf die Wülste 50 backen 18 und 20 mit unteren Klemmbacken 18 a und bewegbare Preßbacken angeordnet sind. Nach dem 20 α in der in F i g. 2 gezeigten und aus einem Ver-Trennschweißen und der Ausbildung der Schweiß- gleich mit der F i g. 1 und 2 ersichtlichen Weise zuwülste werden die Preßbacken eingesetzt, um die sammen. Die Klemmbacken 18 a und 20 a sind seitlich Schweißwülste zusammenzupressen, so daß diese eine versetzt und verlaufen in Längsrichtung, den Klemmerhöhte Festigkeit aufweisen, wobei das Trennschwei- 55 backen 18 und 20 gegenüberliegend. Der untere Fühßen und Pressen bei fixierten Folien kurzzeitig nach- rungskopf 30 für die Klemmbacken 18 a und 20 a ist einander ausgeführt werden können, so daß man stationär und weist die Führungsaussparung 32 auf, die ein kurzes Arbeitsspiel zur Herstellung gepreßter ähnlich den Führungsaussparungen 26 für die oberen Schweißnähte erhält. Klemmbacken 18 und 20 sind. Die unteren Klemm-
Eine weitere Ausgestaltung der Erfindung besteht 60 backen 18 α und 20 α werden von einer Vielzahl von
darin, daß der Abstand zwischen den Oberflächen in Längsrichtung versetzten Zapfen 34 aufgenommen,
der Preßbacken in der Ausgangsstellung einstell- von denen nur einer für jeden Klemmbacken 18 a
bar ist. und 20 α gezeigt ist. Die Führungsbauteile 36, mit
Nachstehend wird an Hand von Ausführungsbei- denen die Zapfen 34 verbunden sind, sind in den Füh-
spielen die Erfindung in Verbindung mit den Zeich- 65 rungsaussparungen 32 verschiebbar und durch die
nungen näher erläutert. Die Figuren zeigen Druckfedern 38 vorgespannt. Der Führungskopf 12
F i g. 1 eine senkrechte Schnittansicht einer Vor- wird abwärts bewegt, wobei die übereinanderliegen-
richtung zum Trennschweißen, die die übereinander- den Folien 40 aus thermoplastischem Werkstoff nach-

Claims (2)

  1. 3 4
    giebig, jedoch kräftig zwischen den Klemmbacken 18 Gemäß der Erfindung wird nach den F i g. 4 bis 8
    und 18 α und zwischen den Klemmbacken 20 und ein Druck auf der. verschweißten wulstförmigen Rand
    20 α eingeklemmt werden. ausgeübt, während der Rand plastisch ist und bevor
    Wie bereits erwähnt, wird Wärme den benach- das Heizelement abgeschaltet wird,
    harten Oberflächen beider Folien aus thermoplasti- S Die Vorrichtung enthält die Klemmbacken 60, 61 schem Werkstoff zugeführt, wenn diese miteinander und 62, 63, zwischen welchen Oberflächenteile der verbunden werden. Zu diesem Zweck sind obere und übereinanderliegenden Folien 40 durch Betätigung untere Strahlungsheizelemente 42 und 44 in der Vor- des Mechanismus 16 entgegen der Abziehwirkung richtung befestigt. Diese Strahlungsheizeiemente kön- der Federn 14, etwa in der gleichen Weise v/ie in nen aus einem Legierungsmetall mit hohem Wider- io Verbindung mit Fig. 1 dargestellt, befestigt werden, stand, z.B. Nichrom, bestehen und eine größere In der Vorrichtung nach den Fig. 4 bis 8 weist das Breite als Dicke aufweisen. Die Abmessungen dieser Strahlungsheizglied 64 die Form eines Bandes oder Strahlungsheizelemente sind nicht kritisch. Ein Bei- flachen Drahtes ähnlich dem Band 42 nach den spiel für ein entsprechendes Strahlungselement besitzt F i g. 1 bis 4 auf, mit der Ausnahme, daß es voreine Breite von 0,3 cm und eine Dicke von 0,045 cm. 15 zugsweise so angeordnet ist, daß seine breitere Fläche Das untere Element 44 kann ortsfest sein, während senkrecht steht. Die Vorrichtung, mit deren Hilfe ein das obere Element mit dem Führungskopf 12 ver- Druck auf die verschweißten, wulstförmigen Ränder schiebbar ist, der auf die thermoplastischen Folien 65 aufgebracht wird, um diese zusammenzudrücken, zu und von diesen weg bewegbar gehalten ist, wie weist die zusätzlichen Preßbacken 66, 61 und 68, 69 sich aus der F i g. 1 im Vergleich mit der F i g. 2 20 auf, die in bezug auf die Klemmbacken 60, 61 und ergibt. 62,63 verschiebbar sind, welche die zusätzlichen
    Die Halterung für das obere Strahlungsheizelement Preßbacken einstellen und führen.
    42 weist eine Vielzahl von in Längsrichtung versetz- Die oberen Preßbacken 66 und 68 werden durch ten Schäften 46 auf, die an dem Führungskopf 12 im die Platte 70 nach unten bewegt. Diese Platte 70 Raum zwischen den seitlich versetzten Führungsaus- 25 wird durch Nocken 71 entgegen der Abziehkraft der sparungen 26 befestigt sind. Ferner wird das Strah- Zugfedern 72 betätigt. Eine ähnliche Nocken- und lungsheizelement 42 von einem Bügel 48 aufgenom- Federanordnung 73, 74 ist für die untere Platte 75 men, der an den Schäften 46 in beliebiger Weise be- vorgesehen, die die unteren Preßbacken 67, 69 entfestigt ist. Um das Strahlungsheizelement 42 straff zu gegen der Rückziehkraft der Zugfedern 74 gemeinhalten, wenn es auf Grund des hindurchgeschickten' 30 sam mit der Bewegung der oberen Preßbacken 66, Stromes beheizt wird, ist ein Ende des Elementes an 68 verschiebt.
    dem Bügel 48 in beliebiger Weise, z. B über einer Die Preßwirkung der Vorrichtung nach den F i g. 4 Schraube50, befestigt, und das entgegengesetzte Ende bis ,8 ergibt sich aus den Fig. 7 und 8. Fig. 7 des Strahlungsheizeiementes ist mit einem Ende einer zeigt' den Zustand der verschweißten Ränder, bevor j Zugfeder 52 verbunden, dessen anderes Ende an 35 sie durch die Preßbacken 66,67 und 68,69 zuj einem Stift 54 angebracht ist, welcher am Bügel 48 sammengepreßt werden. Die Klemmbacken 60, 61 ! befestigt ist. Wenn das Strahlungsheizelement 42 sich und 62, 63 werden von den in F i g. 4 gezeigten Stelin Längsrichtung auf Grund einer Aufheizung aus- lungen in Stellungen verschoben, in denen die Folien j dehnt, wird es durch die Feder 52 straff gehalten, und festgehalten werden, und der Teil der Folien zwischen damit wird ein Durchhängen verhindert. Das untere 40 den festgeklemmten Oberflächenteilen der Folien wird Strahlungsheizelement 44, das vorzugsweise ortsfest durch das Strahlungsheizelement 64 aufgeheizt, ohne ist, obgleich es verschiebbar sein kann, ist so ange- daß das Heizelement die Folien berührt. Diese Aufordnet, daß eine obere Fläche nur wenig unterhalb heizung der Folien ergibt die Trennung der Folien der benachbarten Oberfläche der unteren Folie im längs einer Linie, die in Längsrichtung des Heizele-Klemmzustand der beiden Folien nach F i g. 2 liegt. 45 mentes verläuft, und die beheizten Teile schmelzen Eine Bügelhalterung und Vorrichtung, die das Strah- und schrumpfen in der Nähe der Oberflächen der lungselement 44 in gespanntem Zustand hält, ist bei Klemmbacken 60, 61 und 62, 63, wie in F i g. 7 ge-56 vorgesehen, um diese Bauteile in straffen Zustand zeigt, wobei die verschweißten, wulstförmigen Ränentsprechend denen nach F i g. 3 zu halten. Mehrere der 65 entstehen. Im Anschluß daran werden die Schäfte 58 sind mit dem Bügel 56 in Längsrichtung 50 Preßbacken 66, 67 und 68, 69 in die in F i g. 8 geversetzt verbunden, ähnlich wie die Verbindung der zeigte Stellung gebracht, damit die wulstförmigen Schäfte 46 mit dem Bügel 48 nach F i g. 3. Der Bügel Ränder zusammengepreßt werden, während sie noch 56 ist an dem unteren Führungskopf 32 in beliebiger plastisch sind und durch das Strahlungsheizelement Weise z. B. durch ein oder mehrere Querglieder 60 64 beheizt werden. Diese Preßwirkung verbessert die befestigt. Die Strahlungsheizelemente 42 und 44 sind 55 Verschweißung und ist insbesondere zweckmäßig, um gegen ihre Metallhalterungen isoliert und jeweils an eine gute Verschweißung von stark geschrumpften ihren entgegengesetzten Enden an eine elektrische Folien zu erzielen. Die zusammengepreßten Ränder Stromquelle angeschlossen. sind mit 65' in F i g. 8 bezeichnet.
    Die Teile der Folien, die sich seitlich über die
    Klemmbacken an der Schweißlinie erstrecken, wer- 60
    den gleichzeitig und direkt an den entgegengesetzten Patentansprüche-Seiten durch die Strahlungsheizelemente 42 und 44
    aufgeheizt, sobald der Klemmvorgang beginnt, wobei
    die Folien einer intensiven Erwärmung unterworfen 1. Vorrichtung zum Trennschweißen von überwerden, die diese rasch schmilzt und ein Abfließen 65 einanderliegenden Folien aus thermoplastischem an die benachbarten Seiten der Klemmbacken be- Werkstoff, bei der die Folie zwischen zwei in Abwirkt, wodurch verschweißte wulstförmige Folien- stand liegenden, auf die Folienoberfläche hin und ränder an den Seiten der Klemmbacken entstehen. von ihnen weg bewegbaren Klemmbackenpaaren
    eingeklemmt und durch ein im Abstand zwischen den Klemmbackenpaaren liegendes, in Richtung der Folienoberfläche bewegbares Strahlungsheizelement getrennt und unter Wulstbildung verschweißt werden, dadurch gekennzeichnet, daß neben den Klemmbacken (60, 61, 62,
    63) auf die Wülste bewegbare Preßbacken (66, 67, 68, 69) angeordnet smd.
  2. 2. Vorrichtung nach Anspruch 1, dadurch «ekennzeichnet, daß der Abstand zwischen den Oberflächen der Preßbacken (60, 61, 62, 63) in der Ausgangsstellung einstellbar ist.
    Hierzu 1 Blatt Zeichnungen
DE19641479841 1963-03-08 1964-03-05 Vorrichtung zum trennschweissen von uebereinanderliegenden folien aus thermoplastischem werkstoff Pending DE1479841B2 (de)

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US26383763A 1963-03-08 1963-03-08
US30764763 US3330716A (en) 1963-03-08 1963-09-09 Radiant film sealing and cutting apparatus
US32949963 US3321353A (en) 1963-03-08 1963-12-10 Film sealing and cutting apparatus

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