WO1990005059A1 - Process and device for welding on a thermoplastic masking band - Google Patents

Process and device for welding on a thermoplastic masking band Download PDF

Info

Publication number
WO1990005059A1
WO1990005059A1 PCT/EP1989/001174 EP8901174W WO9005059A1 WO 1990005059 A1 WO1990005059 A1 WO 1990005059A1 EP 8901174 W EP8901174 W EP 8901174W WO 9005059 A1 WO9005059 A1 WO 9005059A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
seam
hot air
masking tape
welding
Prior art date
Application number
PCT/EP1989/001174
Other languages
German (de)
French (fr)
Inventor
Peter Greller
Karl-Joseph Feth
Werner Schauss
Original Assignee
G.M. Pfaff Aktiengesellschaft
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 G.M. Pfaff Aktiengesellschaft filed Critical G.M. Pfaff Aktiengesellschaft
Publication of WO1990005059A1 publication Critical patent/WO1990005059A1/en

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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1261—Avoiding impregnation of a preformed part
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0026—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor an edge face with strip material, e.g. a panel edge
    • B29C63/0034—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor an edge face with strip material, e.g. a panel edge the strip material being folded
    • B29C63/0039—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor an edge face with strip material, e.g. a panel edge the strip material being folded continuously
    • 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
    • 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
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5092—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the tape handling mechanisms, e.g. using vacuum
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/62—Stitching
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/038—Covering the joint by a coating material
    • B29C66/0384—Covering the joint by a coating material the coating material being in tape, strip or band form
    • 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
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/23—Particular 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
    • B29C66/232—Particular 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
    • 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
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/632—Internally supporting the article during joining using a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 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
    • B29C66/81433—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 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
    • B29C66/81435—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 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/845—C-clamp type or sewing machine type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8744—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down
    • B29C66/87443—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down by withdrawing the heating tools
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5021—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/751—Mattresses, cushions

Definitions

  • thermoplastic masking tape Method and device for welding a thermoplastic masking tape
  • the invention relates to a method and
  • Plastic-coated fabric consisting of a seat cover made by sewing is filled with a foam that expands within the cover and firmly bonds with the coating of the fabric.
  • thermoplastic masking tape as it is proposed in principle by DE-PS 821 843.
  • the masking tape is fed continuously, heated together with the coating of the fabric and pressed with the help of pressure rollers on both sides of the seam overhang, whereby it firmly connects to the coating and the thread seam
  • Ah cover tape is always welded in the same orientation to the thread seam. This requirement is not met if the masking tape is even
  • the invention has for its object to provide a method and a device for connecting a flat cover tape according to the preamble of claim 1 or 2, in which it is ensured that the cover tape on any. Length can be applied in the same orientation to the thread seam to be covered.
  • the object is achieved by the features specified in the characterizing part of claims 1 and 2
  • connection or welding point Seam protrusion with spacing covering tape fed to the connection or welding point in a form-stabilized manner and in the area of the connection or
  • the compressed air flowing between the seam protrusion and the cover tape and thereby building up an air cushion also has a cooling effect, in the event that the cover tape should nevertheless occasionally contact the seam protrusion despite the compressed air flow, the contact point during welding is prevented from heating up to the welding temperature becomes.
  • the cooling effect of the compressed air provides an additional guarantee that the masking tape is not on
  • Claims 2 to 4 specify a first embodiment of a device for carrying out the method, special measures for guiding and shaping the masking tape and the layers of fabric being taken.
  • the invention is based on two in the drawing illustrated embodiments explained. It
  • Fig. 1 is a perspective view of a part of a welding machine with one
  • Fig. 2 is a sectional view through the
  • Fig. 3 is a sectional view through two means
  • Fig. 4 is a diagrammatic representation of the second
  • Embodiment of a welding machine in which is designed as a hot air nozzle
  • Heating element is arranged stationary
  • Fig. 5 is a diagrammatic representation of a in
  • Fig. 6 is a diagrammatic representation of the in
  • Welding machine has a head (1), an arm (2) carrying this and a column (3) attached to a base plate (not shown). On a carrier (4) attached to the head (1) there is an in in the vertical direction
  • Pressure roller (5) arranged, which is divided by an annular groove (6) into two roller sections (7, 8).
  • a lower pressure roller (9) is arranged on the column (3). Both pressure rollers (5, 9) can be driven synchronously with each other by known drive devices, not shown.
  • a swivel bracket (11) for a hot air nozzle (12) is arranged on a support (10) attached to the head (1), said swivel bracket being located between a rest position remote from the pressure rollers (5, 9) and a position close to the pressure rollers (5, 9). lying working position is movable.
  • the hot air nozzle (12) is fork-shaped and has two outlet openings (13, 14), the width and mutual distance of which corresponds to the width and the mutual distance of the roller sections (7, 8).
  • On the head (1) is a carrier (15) for one
  • V ⁇ rratsrolle (16) attached which contains a thermoplastic masking tape A.
  • a guide (18) for the band A is arranged on a holder (17) attached to the head (1).
  • the guide device (18) has a sheet metal sleeve (19) which contains a flat guide channel (20) (Fig. 2) with an inlet opening (21) which extends in a straight line.
  • the sheet metal sleeve (19) faces away from the inlet opening (21)
  • the guide device (18) is directed obliquely downwards and runs in the
  • the end section (23) of a compressed air line (24) is on the concave underside of the bulge (22).
  • Compressed air source is connected.
  • the outlet opening (25) of the compressed air line (24) lies essentially in the same plane as the outlet opening of the
  • the bulge (29) tapering towards the welding point (26) lies with the bulge (22) of the guide apparatus (18) in a common vertical plane and forms a guide channel (30).
  • Bracket (31) is arranged a guide plate (32) which runs at a flat angle to the guide plate (28) lying above it and together with this forms a guide apparatus (33).
  • the central region of the lower guide plate (32) is curved upwards, as a result of which a flat guide rib (34) extending in the same direction is formed below the bulge (29) of the upper guide plate (34), which increases towards the weld (26) becomes flatter and before the end edge of the
  • the seat cover (H) to be filled with foam in a later step has two with one
  • thermoplastic coating (B) provided St ⁇ fflagen (S1, S2), which are connected by a thread seam (N) in such a way that a flat
  • thermoplastic cover tape (A) is welded over the seam protrusion (U) on both sides of the thread seam (N) onto the overlying coating (B).
  • the seat cover (H) is first in the gap between the guide plates (28, 32) of the
  • Strip end inserted into the guide channel (20) of the sheet metal sleeve (19) and up to its outlet opening
  • the cover tape (A) is turned into a U-shaped fold (F) with two for the support layers (S1,
  • the compressed air line (24) is pressurized with compressed air, whereupon a continuous flow from the end section (23) Airflow emerges, which flows below the apex area of the fold (F) in the direction of the weld (26). The air flow causes the fold (F) to emerge after the masking tape (A) emerges from the
  • the hot air nozzle (12) swiveled into its working position and the welding machine switched on.
  • the end regions (E1, E2) of the masking tape (A) lying flat on the coating (B) of the fabric layers (S1, S2) are heated to the welding temperature together with the corresponding sections of the coating (B) and by the subsequent ones Pressure rollers (5, 9) pressed together and welded together. This is due to the one distance
  • the compressed air flow reliably prevents the fold (F) from being welded to the seam overhang (U).
  • Guide apparatus (18, 33) is so narrow that a movably arranged hot air nozzle is no longer or only very laboriously in the welding position
  • Hot air nozzle (12) of the first embodiment is fork-shaped.
  • the hot air nozzle (42) is at one end of a tube
  • a plate-shaped slide (47) is arranged on two guide rods (46) of the carrier (44) and is connected to the piston rod (48) of a compressed air cylinder (49).
  • a hot air device (50) is attached to the slide (47) and has a cylindrical nozzle (51).
  • a permanently installed exhaust air duct (52) is provided, the rectangular inlet opening of which is designated by (53).
  • a deflection flap (54) is assigned to the exhaust air duct (52), which is connected to a vertical,
  • Deflection flap (54) is designed as a hollow body open on two sides with an arcuate guide surface (56). There is one on the deflection flap (54)
  • Deflection flap (54) is aligned with the inlet opening (53) of the exhaust air duct (52). Functionality:
  • the hot air device (50) is switched on continuously and therefore also generates the breaks between the
  • Hot air During the processing breaks, the hot air device (50) is in the retracted position shown in FIG. 5, in which the nozzle (51) partially protrudes into the deflection flap (54). The hot air flowing out of the nozzle (51) hits the
  • Hot air device (50) ends as soon as the nozzle (51)
  • Mouthpiece (45) a coupling between the hot air device (50) and the hot air nozzle (42).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A sealing masking band is to be welded onto a thread seam with turnings. The masking bond (A) is fed through a guide apparatus (18) which makes a U-shaped fold (F) in the centre of the masking band (A). During the welding process, an air stream is passed through the gap between the turnings (U) and the fold (F) which covers them, and prevents the masking band (A) and turnings (U) being welded together by keeping them apart. The process is intended for liquid-tight sealing of coated seat covers which are subsequently filled with expanded foam.

Description

Verfahren und Vorrichtung zum Aufschweißen eines thermoplastischen Abdeckbandes  Method and device for welding a thermoplastic masking tape
Die Erfindung betrifft ein Verfahren und eine The invention relates to a method and
Vorrichtung zur Durchfuhrung des Verfahrens nach dem jeweiligen Oberbegriff der Ansprüche 1 und 2. Device for carrying out the method according to the respective preamble of claims 1 and 2.
Bei der Herstellung von Schaumstoffgepolsterten Sitzen wird eine aus einseitig mit thermoplastischem When manufacturing foam-padded seats, one is made from one-sided with thermoplastic
Kunststoff beschichtetem Stoff bestehende, durch Nähen angefertigte Sitzhülle mit einem innerhalb der Hülle expandierenden Schaumstoff ausgefüllt, der sich mit der Beschichtung des Stoffes fest verbindet. Infolge des beim Aufschäumen entstehenden Druckes kann es Plastic-coated fabric consisting of a seat cover made by sewing is filled with a foam that expands within the cover and firmly bonds with the coating of the fabric. As a result of the pressure generated during foaming, it can
passieren, daß der Schaumstoff durch die beim Nähen entstandenen und durch die Nihfäden nicht vollständig ausgefüllten Nadeleinstichlöcher auf die happen that the foam through the needle holes created during sewing and not completely filled by the sewing threads on the
Stoffaußenseite hindurch-quillt, wodurch die Sitze ein unschönes Aussehen erhalten oder sogar vollkommen unbrauchbar werden.  The outside of the fabric swells, which gives the seats an unsightly appearance or even makes them completely unusable.
Um dieser Gefahr vorzubeugen, ist es bekannt, auf die Fadennaht, bei der es sich um eine Kantennaht mit einem abstehenden Nahtüberstand handelt, ein In order to prevent this danger, it is known to use a thread seam, which is an edge seam with a protruding seam protrusion
thermoplastisches Abdeckband aufzuschweißen , wie es durch die DE-PS 821 843 im Prinzip vorgeschlagen wird. Zu diesem Zweck wird das Abdeckband kontinuierlich zugeführt, gemeinsam mit der Beschichtung des Stoffes erhitzt und mit Hilfe von Druckrollen zu beiden Seiten des Nahtüberstandes angepreßt, wodurch es sich mit der Beschichtung fest verbindet und die Fadennaht Welding thermoplastic masking tape, as it is proposed in principle by DE-PS 821 843. For this purpose, the masking tape is fed continuously, heated together with the coating of the fabric and pressed with the help of pressure rollers on both sides of the seam overhang, whereby it firmly connects to the coating and the thread seam
flüssigkeitsdicht abschirmt. Für die Durchführung eines kontinuierlich ablaufenden Schweißvorganges ist es erforderlich, daß das shields liquid-tight. To carry out a continuous welding process, it is necessary that
Ahdeckband in stets gleichbleibender Ausrichtlage zur Fadennaht aufgeschweißt wird. Diese Voraussetzung ist nicht erfüllt, wenn das Abdeckband auch nur Ah cover tape is always welded in the same orientation to the thread seam. This requirement is not met if the masking tape is even
stellenweise einseitig mit einer der beiden in places one-sided with one of the two
Seitenflächen des Nahtüberstandes mit verschweißt wird. In diesem Fall wandert das Abdeckband zwangsläufig seitlich aus der gewünschten Ausrichtlage heraus, so daß es die Fadennaht zunächst ungleichmäßig abdeckt und schließlich gar nicht mehr abzudecken vermag. Side surfaces of the seam overhang is welded with. In this case, the masking tape inevitably moves laterally out of the desired alignment position, so that it initially covers the thread seam unevenly and is ultimately no longer able to cover it.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum flächenhaften Verbinden eines Abdeckbandes nach dem Oberbegriff des Anspruches 1 bzw. 2 zu schaffen, bei dem dafür gesorgt wird, daß das Abdeckband auf beliebiger. Länge in gleichbleibender Ausrichtlage zur abzudeckenden Fadennaht aufbringbar ist. Die Aufgabe wird erfindungsgemäß durch die im Kennzeichenteil des Anspruches 1 und 2 angegebenen Merkmale gelöste The invention has for its object to provide a method and a device for connecting a flat cover tape according to the preamble of claim 1 or 2, in which it is ensured that the cover tape on any. Length can be applied in the same orientation to the thread seam to be covered. The object is achieved by the features specified in the characterizing part of claims 1 and 2
Durch die Maßnahme, das zu beiden Seiten des By the measure that is on both sides of the
Nahtüberstandes aufzubringende Abdeckband zu einer im wesentlichen U-förmigen Falte mit zu den Stofflagen parallel gerichteten Endbereichen zu formen und während des Verbindens bzw. Verschweißens innerhalb des To form seam overhang to be applied to a substantially U-shaped fold with end portions parallel to the layers of fabric and during connection or welding within the
Zwischenraumes zwischen dem Nahtüberstand und der Falte ein Luftposter wirken zu lassen, wird das den To allow an air poster to appear between the seam overhang and the fold will do that
Nahtüberstand mit Abstand übergreifende Abdeckband der Verbindungs- bzw. Schweißstelle formstabilisiert zugeführt und im Bereich der Verbindungs- bzw. Seam protrusion with spacing covering tape fed to the connection or welding point in a form-stabilized manner and in the area of the connection or
Schweißstelle von den beiden Seitenflächen und der Oberseite des Nahtüberstandes ferngehalten, wodurch verhindert wird, daß das Abdeckband ungewollt am Nahtüberstand anliegt und weder insgesamt noch Keep the weld away from the two side surfaces and the top of the seam overhang, thereby preventing the masking tape from being accidentally attached to the Seam protrusion is present and neither overall nor
stellenweise mit diesem mit verbunden wird. Als Folge davon treten am Abdeckband während des Verbindens bzw. Verschweißens keine seitlich gerichteten Zug- oder Ablenkkräfte auf, so daß es ohne weiteres auch über längere Strecken Verzug- und faltenfrei verbunden bzw. aufgeschweißt werden kann.  is connected with this in places. As a result, there are no laterally directed tensile or deflecting forces on the masking tape during the connection or welding, so that it can be connected or welded without distortion and folds over long distances.
Da die zwischen dem Nahtüberstand und dem Abdeckband hindurchströmende und dabei ein Luftpolster aufbauende Druckluft zugleich eine Kühlwirkung hat, wird für den Fall, daß das Abdeckband trotz des Druckluftstromes doch gelegentlich am Nahtüberstand anliegen sollte, verhindert, daß die Berührυngsstelle beim Schweißen bis auf die Schweißtemperatur aufgeheizt wird. Somit ist durch die Kühlwirkung der Druckluft eine zusätzliche Gewähr dafür gegeben, daß das Abdeckband nicht am Since the compressed air flowing between the seam protrusion and the cover tape and thereby building up an air cushion also has a cooling effect, in the event that the cover tape should nevertheless occasionally contact the seam protrusion despite the compressed air flow, the contact point during welding is prevented from heating up to the welding temperature becomes. Thus, the cooling effect of the compressed air provides an additional guarantee that the masking tape is not on
Nahtüberstand angeschweißt wird. In den Ansprüchen 2 bis 4 ist eine erste Ausführungsform einer Vorrichtung zur Durchführung des Verfahrens angegeben, wobei besondere Maßnahmen zur Führung und Formgebung des Abdeckbandes und der Stofflagen getroffen wurden. Seam overhang is welded. Claims 2 to 4 specify a first embodiment of a device for carrying out the method, special measures for guiding and shaping the masking tape and the layers of fabric being taken.
In den Ansprüchen 5 und 6 ist eine zweite In claims 5 and 6 is a second
Ausführungsform der Vorrichtung angegeben, bei der durch eine ortsfeste Anbringung des Heizelementes die Embodiment of the device specified, in which by a fixed attachment of the heating element
Möglichkeit geschaffen wurde, die Austrittsenden der Führungsapparate für das Abdeckband und die Stofflagen besonders dicht an die Druckrollen heranzuführen, was eine Voraussetzung für das Schweißen von engen Radien ist. Possibility was created to bring the outlet ends of the guiding devices for the masking tape and the fabric layers particularly close to the pressure rollers, which is a prerequisite for welding tight radii.
Die Erfindung ist anhand zweier in der Zeichnung dargestellter Ausführungsbeispiele erläutert. Es The invention is based on two in the drawing illustrated embodiments explained. It
zeigen: demonstrate:
Fig. 1 eine schaubildliche Darstellung eines Teiles einer Schweißmaschine mit je einem Fig. 1 is a perspective view of a part of a welding machine with one
Führungsapparat für das Abdeckband und die Stofflagen;  Guide for the masking tape and the fabric layers;
Fig. 2 eine Schnittdarstellung durch die Fig. 2 is a sectional view through the
Führungsapparate;  Leadership apparatus;
Fig. 3 eine Schnittdarstellung durch zwei mittels Fig. 3 is a sectional view through two means
einer Fadennaht miteinander verbundene Stofflagen und ein die Fadennaht überdeckendes Abdeckband;  a thread layer interconnected fabric layers and a cover tape covering the thread seam;
Fig. 4 eine schaubildliche Darstellung des zweiten Fig. 4 is a diagrammatic representation of the second
Ausführungsbeispieles einer Schweißroaschine, bei der das als Heißluftdüse ausgebildete  Embodiment of a welding machine, in which is designed as a hot air nozzle
Heizelement ortsfest angeordnet ist;  Heating element is arranged stationary;
Fig. 5 eine schaubildliche Darstellung einer in Fig. 5 is a diagrammatic representation of a in
wirksamer Stellung befindlichen Umlenkklappe für den Heißluftstrom;  deflection flap for the hot air flow;
Fig. 6 eine schaubildliche Darstellung der in Fig. 6 is a diagrammatic representation of the in
unwirksamer Stellung befindlichen Umlenkklappe.  inactive position of the deflection flap.
Ausführυngsbeispiel 1 Example 1
Das nur zum Teil dargestellte Gehäuse der The housing shown only partially
Schweißmaschine weist einen Kopf (1), einen diesen tragenden Arm (2) und eine auf einer nicht dargestellten Grundplatte befestigte Säule (3) auf. An einem am Kopf (1) befestigten Träger (4) ist eine in vertikaler Richtung federnd beaufschlagte obere Welding machine has a head (1), an arm (2) carrying this and a column (3) attached to a base plate (not shown). On a carrier (4) attached to the head (1) there is an in in the vertical direction
Druckrolle (5) angeordnet, die durch eine Ringnut (6) in zwei Rollenabschnitte (7, 8) unterteilt ist. An der Säule (3) ist eine untere Druckrolle (9) angeordnet. Beide Druckrollen (5, 9) sind durch bekannte nicht dargestellte Antriebsvorrichtungen sychron zueinander antreibbar.  Pressure roller (5) arranged, which is divided by an annular groove (6) into two roller sections (7, 8). A lower pressure roller (9) is arranged on the column (3). Both pressure rollers (5, 9) can be driven synchronously with each other by known drive devices, not shown.
An einem am Kopf (1) befestigten Träger (10) ist eine Schwenkhalterung (11) für eine Heißluftdüse (12) angeordnet, die zwischen einer von den Druckrollen (5, 9) entfernten Ruhestellung und einer dicht vor den Druckrollen (5, 9) gelegenen Arbeitsstellung bewegbar ist. Die Heißluftdüse (12) ist gabelförmig ausgebildet und weist zwei Austrittsöffnungen (13, 14) auf, deren Breite und gegenseitiger Abstand der Breite und dem gegenseitigen Abstand der Rollenabschnitte (7, 8) entspricht. Auf dem Kopf (1) ist ein Träger (15) für eine A swivel bracket (11) for a hot air nozzle (12) is arranged on a support (10) attached to the head (1), said swivel bracket being located between a rest position remote from the pressure rollers (5, 9) and a position close to the pressure rollers (5, 9). lying working position is movable. The hot air nozzle (12) is fork-shaped and has two outlet openings (13, 14), the width and mutual distance of which corresponds to the width and the mutual distance of the roller sections (7, 8). On the head (1) is a carrier (15) for one
Vαrratsrolle (16) befestigt, die ein thermoplastisches Abdeckband A enthält. An einer am Kopf (1) befestigten Halterung (17) ist ein Führungsapparat (18) für das Band A angeordnet. Der Führungsapparat (18) weist eine Blechhülse (19) auf, die einen flachen Führungskanal (20) (Fig. 2) mit einer sich geradlinig ersteckendenEintrittsöffnung (21) enthält. Die Blechhülse (19) weist eine sich von der Eintrittsδffnung (21) in  Vαrratsrolle (16) attached, which contains a thermoplastic masking tape A. A guide (18) for the band A is arranged on a holder (17) attached to the head (1). The guide device (18) has a sheet metal sleeve (19) which contains a flat guide channel (20) (Fig. 2) with an inlet opening (21) which extends in a straight line. The sheet metal sleeve (19) faces away from the inlet opening (21)
Richtung auf die gegenüberliegende nicht bezeichnete Austrittsöffnung zunehmend größer werdende, im Direction towards the opposite, unspecified outlet opening, increasing in size
wesentlichen U-förmige, nach aufwärts gerichtete essentially U-shaped, upward facing
Ausbuchtung (22) auf. Der Führungsapparat (18) ist schräg nach abwärts gerichtet und verläuft im Bulge (22) on. The guide device (18) is directed obliquely downwards and runs in the
wesentlichen tangential zur Mantelfläche der oberen Druckrolle (5), wobei die Ausbuchtung (22) mit der Ringnut (6) fluchtet. substantially tangential to the outer surface of the upper pressure roller (5), the bulge (22) with the Ring groove (6) is aligned.
An der konkaven Unterseite der Ausbuchtung (22) ist der Endabschnitt (23) einer Druckluftleitung (24) The end section (23) of a compressed air line (24) is on the concave underside of the bulge (22).
befestigt, die mit einer nicht dargestellten attached with a not shown
Druckluftquelle verbunden ist. Die Austrittsöffnung (25) der Druckluftleitung (24) liegt im wesentlichen in der gleichen Ebene wie die Austrittsöffnung des Compressed air source is connected. The outlet opening (25) of the compressed air line (24) lies essentially in the same plane as the outlet opening of the
Führungsapparates (18) und ist der zwischen den Leadership apparatus (18) and is that between the
Druckrollen (5, 9) liegenden Schweißstelle (26) Pressure rollers (5, 9) lying weld (26)
zugewandt. facing.
An einer am Kopf (1) befestigten Haltestange (27) ist eine im wesentlichen horizontal verlaufende On a holding rod (27) attached to the head (1) there is an essentially horizontal one
Führungsplatte (28) angeordnet, deren mittlerer Bereich als eine nach aufwärts gerichtete Ausbuchtung (29) ausgebildet ist. Diese in Richtung auf die Guide plate (28) is arranged, the central region of which is designed as an upward bulge (29). This towards the
Schweißstelle (26) zulaufende Ausbuchtung (29) liegt mit der Ausbuchtung (22) des Führungsapparates (18) in einer gemeinsamen vertikalen Ebene und bildet eine Führungsrinne (30). The bulge (29) tapering towards the welding point (26) lies with the bulge (22) of the guide apparatus (18) in a common vertical plane and forms a guide channel (30).
An einer an der Säule (3) einstellbar befestigten Attached to an adjustable one on the column (3)
Halterung (31) ist eine Führungsplatte (32) angeordnet, die unter einem flachen Winkel zur darüber liegenden Führungsplatte (28) verläuft und gemeinsam mit dieser einen Führungsapparat (33) bildet. Der mittlere Bereich der unteren Führungsplatte (32) ist nach aufwärts gewölbt, wodurch unterhalb der Ausbuchtung (29) der oberen Führungsplatte (28) eine in gleicher Richtung verlaufende flache Führungsrippe (34) gebildet ist, die in Richtung auf die Schweißstelle (26) zunehmend flacher wird und noch vor der Endkante der Bracket (31) is arranged a guide plate (32) which runs at a flat angle to the guide plate (28) lying above it and together with this forms a guide apparatus (33). The central region of the lower guide plate (32) is curved upwards, as a result of which a flat guide rib (34) extending in the same direction is formed below the bulge (29) of the upper guide plate (34), which increases towards the weld (26) becomes flatter and before the end edge of the
Führungsplatte (32) endet. Die Funktionsweise ist folgende: Guide plate (32) ends. It works as follows:
Die in einem späteren Arbeitsgang mit Schaumstoff auszufüllende Sitzhülle (H) weist zwei mit einer  The seat cover (H) to be filled with foam in a later step has two with one
thermoplastischen Beschichtung (B) versehene Stαfflagen (S1, S2) auf, die durch eine Fadennaht (N) derart miteinander verbunden sind, daß ein bei flach  thermoplastic coating (B) provided Stαfflagen (S1, S2), which are connected by a thread seam (N) in such a way that a flat
ausgebreiteter Sitzhülle (H) nach aufwärts stehender Nahtüberstand (U) gebildet ist. Zur flüssigkeitsdichten Abschirmung der Fadennaht (N) wird über den Nahtüberstand (U) hinweg zu beiden Seiten der Fadennaht (N) auf die obenliegende Beschichtung (B) das thermoplastische Abdeckband (A) aufgeschweißt. Zu diesem Zweck wird zunächst die Sitzhülle (H) in den Spalt zwischen den Führungsplatten (28, 32) des  spread out seat cover (H) after upstanding seam overhang (U) is formed. For the liquid-tight shielding of the thread seam (N), the thermoplastic cover tape (A) is welded over the seam protrusion (U) on both sides of the thread seam (N) onto the overlying coating (B). For this purpose, the seat cover (H) is first in the gap between the guide plates (28, 32) of the
Führungsapparates (33) geschoben, wobei der Bereich der Fadennaht (N) rittlings auf der Führungsrippe (34) angeordnet und der Nahtüberstand (U) mittig in die  Guide device (33) pushed, the area of the thread seam (N) astride the guide rib (34) and the seam overhang (U) in the middle
Führungsrinne (30) eingeführt wird. Beim Guide channel (30) is introduced. At the
Hindurchschieben der Stofflagen (S1, S2) in Richtung auf die Schweißstelle (26) werden diese aufgrund der flacher werdenden Führungsrippe (34) im Bereich der Fadennaht (N) in eine flach ausgebreitete Lage gebracht. Sofern das Abdeckband (A) nicht bereits im Pushing through the layers of material (S1, S2) in the direction of the welding point (26), due to the flattening guide rib (34) in the area of the thread seam (N), they are brought into a flatly spread position. If the masking tape (A) is not already in
Führungsapparat (18) aufgenommen ist, wird nun das  Guide apparatus (18) is added, it will now
Bandende in den Führungskanal (20) der Blechhülse (19) eingeführt und bis zu dessen Austrittsöffnung Strip end inserted into the guide channel (20) of the sheet metal sleeve (19) and up to its outlet opening
durchgeschoben. Dabei wird das Abdeckband (A) zu einer U-förmigen Falte (F) mit zwei zu den Stαfflagen (S1,pushed through. The cover tape (A) is turned into a U-shaped fold (F) with two for the support layers (S1,
S2) parallel gerichteten Endbereichen (E1, E2) geformt. S2) formed in parallel end regions (E1, E2).
Bevor die Schweißmaschine eingeschaltet wird, wird die Druckluftleitung (24) mit Druckluft beaufschlagt, worauf aus dem Endabschnitt (23) ein kontinuierlicher Luftstrom austritt, der unterhalb des Scheitelbereiches der Falte (F) in Richtung der Schweißstelle (26) entlangströmt. Durch den Luftstrom wird die Falte (F) nach dem Austritt des Abdeckbandes (A) aus dem Before the welding machine is switched on, the compressed air line (24) is pressurized with compressed air, whereupon a continuous flow from the end section (23) Airflow emerges, which flows below the apex area of the fold (F) in the direction of the weld (26). The air flow causes the fold (F) to emerge after the masking tape (A) emerges from the
Führungsapparat (18 ) formstabilisiert , wodurch Guide apparatus (18) stabilized in shape, whereby
verhindert wird, daß sich die Falte (F) verengt oder seitlich kippt. Nachdem das Abdeckband (A) prevents the fold (F) from narrowing or tipping sideways. After the masking tape (A)
die Stofflagen (S1, S2) erreicht hat, strömt die has reached the fabric layers (S1, S2), the flows
Druckluft durch den Zwischenraum (Z) zwischen der Falte (F) und dem Nahtüberstand (U) hindurch und erzeugt innerhalb des Zwischenraumes (Z) einen Überdruck, der die Wirkung eines Luftpolsters hat. Auf diese Weise wird erreicht, daß die Falte (F) zu den Seitenflächen und der Oberseite des Nahtüberstandese (U) einen gleichmäßigen Abstand hält. Compressed air through the space (Z) between the fold (F) and the seam overhang (U) and creates an overpressure within the space (Z), which has the effect of an air cushion. In this way it is achieved that the fold (F) to the side surfaces and the top of the seam protrusion (U) maintains a uniform distance.
Sobald sich die Stofflagen (S1, S2) und das Abdeckband (A) in der für die Durchführung; eines Schweißvorganges erforderlichen Ausgangslage befinden, wird die As soon as the fabric layers (S1, S2) and the masking tape (A) in the for the implementation; of a welding process necessary starting position, the
Heißluftdüse (12) in ihre Arbeitsstellung eingeschwenkt und die Schweißmaschine eingeschaltet. Während des nun beginnenden Schweißvorganges werden die flach auf der Beschichtung (B) der Stofflagen (S1, S2) liegenden Endbereiche (E1, E2) des Abdeckbandes (A) gemeinsam mit den entsprechenden Abschnitten der Beschichtung (B) auf Schweißtemperatur erhitzt und durch die nachfolgenden Druckrollen (5, 9) zusammengepreßt und fest miteinander verschweißt. Dabei wird durch den einen Abstand The hot air nozzle (12) swiveled into its working position and the welding machine switched on. During the welding process that now begins, the end regions (E1, E2) of the masking tape (A) lying flat on the coating (B) of the fabric layers (S1, S2) are heated to the welding temperature together with the corresponding sections of the coating (B) and by the subsequent ones Pressure rollers (5, 9) pressed together and welded together. This is due to the one distance
zwischen der U-förmigen Falte (F) und dem Nahtüberstand (U) schaffenden und zugleich eine Kühlwirkung between the U-shaped fold (F) and the seam overhang (U) creating and at the same time a cooling effect
ausübenden Druckluftstrom zuverlässig verhindert, daß die Falte (F) am Nahtüberstand (U) angeschweißt wird. The compressed air flow reliably prevents the fold (F) from being welded to the seam overhang (U).
Ausführungsbeispiel 2 Embodiment 2
Die Schweißmaschine dieses Ausführungsbeispieles entspricht im wesentlichen derjenigen des ersten The welding machine of this embodiment corresponds essentially to that of the first
Ausführungsbeispieles, d. h. der Aufbau des Gehäuses, die Anordnung der Druckrollen (5 und 9) und die  Embodiment, d. H. the structure of the housing, the arrangement of the pressure rollers (5 and 9) and the
Ausbildung des Führungsapparates (18) für das Abdeckband (A) sowie des Führungsapparates (33) für die Stofflagen (S1, S2) sind identisch.  Formation of the guide device (18) for the cover tape (A) and the guide device (33) for the fabric layers (S1, S2) are identical.
Ein Unterschied besteht jedoch in der Anordnung der beiden Führungsapparate (18, 33). Sie sind beim zweiten Ausführungsbeipiel gemäß Fig. 4 in einem flacheren gemeinsamen Winkel angeordnet, wodurch ihre However, there is a difference in the arrangement of the two guiding devices (18, 33). In the second exemplary embodiment according to FIG. 4, they are arranged at a flatter common angle, as a result of which their
Austrittsenden (40, 41) sehr viel dichter an die Outlet ends (40, 41) much closer to the
zwischen den Druckrollen (5, 9) liegende Schweißstelle (26) herangeführt werden können. welding point (26) lying between the pressure rollers (5, 9) can be brought up.
Da in diesem Fall der Abstand zwischen den Because in this case the distance between the
Führungsapparaten (18, 33) so schmal ist, daß eine bewegbar angeordnete Heißlüftdüse gar nicht mehr oder nur noch sehr umständlich in die Schweißstellung  Guide apparatus (18, 33) is so narrow that a movably arranged hot air nozzle is no longer or only very laboriously in the welding position
eingeführt werden könnte, ist bei diesem could be introduced is at this
Ausführungsbeipiel eine fest installierte Heißlußdüse Example of a permanently installed hot air nozzle
(42) vorgesehen, die im übrigen jedoch wie die (42) provided, but otherwise like the
Heißluftdüse (12) des ersten Ausführungsbeispieles gabelförmig ausgebildet ist. Hot air nozzle (12) of the first embodiment is fork-shaped.
Die Heißluftdüse (42) ist an einem Ende eines RohresThe hot air nozzle (42) is at one end of a tube
(43) befestigt, das von einem am Arm (2) angeordneten Träger (44) gehalten ist. Am anderen Ende des Rohres (43) ist ein trichterartiges Mundstück (45) befestigt. Auf zwei Führungsstangen (46) des Trägers (44) ist ein plattenförmiger Schieber (47) angeordnet, der mit der Kolbenstange (48) eines Druckluftzylinders (49) verbunden ist. Am Schieber (47) ist ein Heißluftgerät (50) befestigt, das eine zylinderförmige Düse (51) aufweist. Wie aus Fig. 5 und 6 ersichtlich ist, ist ein fest installierter Abluftkanal (52) vorgesehen, dessen rechteckförmige Eintrittsöffnung mit (53) bezeichnet ist. Dem Abluftkanal (52) ist eine Umlenkklappe (54) zugeordnet , die an einer vertikal verlaufenden , (43) attached, which is held by a bracket (44) arranged on the arm (2). At the other end of the tube (43) a funnel-like mouthpiece (45) is attached. A plate-shaped slide (47) is arranged on two guide rods (46) of the carrier (44) and is connected to the piston rod (48) of a compressed air cylinder (49). A hot air device (50) is attached to the slide (47) and has a cylindrical nozzle (51). As can be seen from FIGS. 5 and 6, a permanently installed exhaust air duct (52) is provided, the rectangular inlet opening of which is designated by (53). A deflection flap (54) is assigned to the exhaust air duct (52), which is connected to a vertical,
ortsfest gelagerten Welle (55) angeordnet ist. Die fixed shaft (55) is arranged. The
Umlenkklappe (54) ist als ein an zwei Seiten offener Hohlkörper mit einer bogenförmigen Leitfläche (56) ausgebildet. An der Umlenkklappe (54) ist eine Deflection flap (54) is designed as a hollow body open on two sides with an arcuate guide surface (56). There is one on the deflection flap (54)
teilweise überstehende Anschlagplatte (57) befestigt. partially protruding stop plate (57) attached.
Eine Zugfeder (58), die über einen Hebel (59) auf die Welle (55) ein Drehmoment ausübt, bewirkt, daß die A tension spring (58), which exerts a torque on the shaft (55) via a lever (59), causes the
Umlenkklappe (54) bei zurückgezogenem Heißluftgerät (50) gemäß Fig. 5 mit der Anschlagplatte (57) am Abluftkanal (52) anliegt, wobei die Austrittsseite (60) der 5 with the stop plate (57) on the exhaust air duct (52), with the outlet side (60) of the
Umlenkklappe (54) mit der Eintrittsöffnung (53) des Abluftkanals (52) fluchtet. Funktionsweise: Deflection flap (54) is aligned with the inlet opening (53) of the exhaust air duct (52). Functionality:
Das Heißluftgerät (50) ist kontinuierlich eingeschaltet und erzeugt daher auch in den Pausen zwischen der  The hot air device (50) is switched on continuously and therefore also generates the breaks between the
Bearbeitung zweier aufeinanderfolgender Sitzhüllen Processing two successive seat covers
Heißluft. In den Bearbeitungspausen befindet sich das Heißluftgerät (50) in der in Fig. 5 dargestellten zurückgezogenen Stellung, in welcher die Düse (51) teilweise in die Umlenkklappe (54) hineinragt. Die der Düse (51) entströmende Heißluft trifft auf die Hot air. During the processing breaks, the hot air device (50) is in the retracted position shown in FIG. 5, in which the nozzle (51) partially protrudes into the deflection flap (54). The hot air flowing out of the nozzle (51) hits the
bogenförmige Leitfläche (56) und wird durch diese in Richtung des Abluftkanals (52) umgelenkt. arcuate guide surface (56) and is deflected by this in the direction of the exhaust air duct (52).
Sobald sich eine neu zu bearbeitende Sitzhülle in As soon as a new seat cover to be reworked
Arbeitsstellung befindet, d. h. das Anfangsende einer abzudeckenden Naht in den Führungsapparat (33) eingeführt ist, wird das Heißluftgerät (50) mit Hilfe des Druckluftzylinders (49) in die Arbeitsstellung gemäß Fig. 6 geschoben. Während dieser Bewegung stößt die Düse (51) an die Innenseite der Umlenkklappe (54) an und verschwenkt sie in die in Fig. 6 dargestellte unwirksame Stellung. Die Verschiebebewegung des Working position, ie the beginning end of a seam to be covered in the guide apparatus (33) is introduced, the hot air device (50) is pushed by means of the compressed air cylinder (49) into the working position according to FIG. 6. During this movement, the nozzle (51) abuts the inside of the deflection flap (54) and pivots it into the inactive position shown in FIG. 6. The shifting movement of the
Heißluftgerätes (50) endet, sobald die Düse (51) Hot air device (50) ends as soon as the nozzle (51)
auf dem als Anschlag wirkenden Mundstück (45) aufsetzt. In dieser Stellung bilden die Düse (51) und das attaches to the mouthpiece (45) acting as a stop. In this position, the nozzle (51) and that
Mundstück (45) eine Kupplung zwischen dem Heißluftgerät (50) und der Heißluftdüse (42). Mouthpiece (45) a coupling between the hot air device (50) and the hot air nozzle (42).
Nach Ablauf einer zum Aufheizen des Rohres (43) und der Heißluftdüse (42) dienenden Verzögerungszeit wird der Antrieb der Druckrollen (5, 9). eingeschaltet und ein neuer Schweißvαrgang eingeleitet. Dieser Schweißvorgang läuft in gleicher Weise ab wie beim Ausführungsbeispiel 1 beschrieben. After a delay time serving to heat the pipe (43) and the hot air nozzle (42) has elapsed, the drive of the pressure rollers (5, 9). switched on and a new welding process initiated. This welding process proceeds in the same way as described in embodiment 1.

Claims

Patentansprüche Claims
1. Verfahren zum flächenhaft - beispielsweise durch Schweißen oder Kleben - erfolgenden Verbinden eines Abdeckbandes mit Stαfflagen zu beiden Seiten des Nahtüberstandes einer die Stαfflagen 1. Method for connecting a masking tape with fabric layers on both sides of the seam protrusion of the fabric layers, for example by welding or gluing
miteinander verbindenden, als Fadennaht  connecting with each other, as thread seam
ausgebildeten Kantennaht, dadurch- gekennzeichnet, daß das Abdeckband (A) vor der Verbindungsstelle zu einer den Nahtüberstand (U) unter Bildung eines Zwischenraumes (Z) umgebenden im wesentlichen  trained edge seam, characterized in that the cover band (A) in front of the connection point to a substantially surrounding the seam protrusion (U) forming an intermediate space (Z)
U-förmigen Falte (F) mit zu den Stαfflagen (S1, S2) im wesentlichen parallel gerichteten  U-shaped fold (F) with a substantially parallel to the Stαfflagen (S1, S2)
Endbereichen (E1, E2) geformt wird und daß während des Verbindens der Endbereiche (E1, E2) des  End regions (E1, E2) is formed and that during the connection of the end regions (E1, E2) of the
Abdeckbandes (A) mit den Stofflagen (S1, S2) im Zwischenraum (Z) ein das Abdeckband (A) vom  Masking tape (A) with the fabric layers (S1, S2) in the space (Z) and the masking tape (A) from
Nahtüberstand (U) trennendes Luftpolster vorhanden ist.  There is an air cushion separating the seam overhang (U).
2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, bei dem die Verbindung des Abdeckbandes mit den Stofflagen durch Schweißen erfolgt, mit einem Heizelement und zwei nachgeαrdneten 2. Device for performing the method according to claim 1, in which the connection of the masking tape to the layers of material is carried out by welding, with a heating element and two nachgeαrdneten
Druckrollen, dadurch gekennzeichnet, daß oberhalb des Heizelementes (12; 42) ein Führungsapparat (18) für das Abdeckband (A) und unterhalb des  Pressure rollers, characterized in that above the heating element (12; 42) a guide device (18) for the cover band (A) and below the
Heizelementes (12; 42) ein Führungsapparat (33) für die Stαfflagen (S1, S2) angeordnet ist, wobei der Führungsapparat (18) für das Abdeckband (A) von einer flachen Hülse (19) gebildet ist, die  Heating element (12; 42) a guide device (33) for the Stαfflagen (S1, S2) is arranged, the guide device (18) for the cover band (A) is formed by a flat sleeve (19)
von der Eintrittsδffnung (21) ausgehend in  starting from the inlet opening (21) in
Richtung auf die Austrittsöffnung eine zunehmend größer werdende, im wesentlichen U-förmige  Towards the outlet opening an increasingly larger, substantially U-shaped
Ausbuchtung (22) aufweist und daß unterhalb der Ausbuchtung (22) ein im wesentlichen parallel zur Längsrichtung der Hülse (19) verlaufender Bulge (22) and that below the Bulge (22) is a substantially parallel to the longitudinal direction of the sleeve (19)
Endabschnitt (23) einer Druckluftleitung (24) angeordnet ist, deren Austrittsöffnung (25) den Druckrollen (5, 9) zugekehrt ist.  End section (23) of a compressed air line (24) is arranged, the outlet opening (25) facing the pressure rollers (5, 9).
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Führungsapparat (33) für die Stofflagen (Sl, S2) aus zwei in einem flachen Winkel 3. Apparatus according to claim 2, characterized in that the guide apparatus (33) for the layers of material (Sl, S2) from two at a flat angle
aufeinanderzulaufenden Führungsplatten (28, 32) besteht, von denen die obere Führungsplatte (28) eine den Nahtüberstand (U) seitlich stützende  there are guide plates (28, 32) which run towards one another, of which the upper guide plate (28) supports the seam protrusion (U) laterally
Führungsrinne (30) aufweist.  Guide channel (30).
4. Vorrichtung nach Anspruch 3, dadurch 4. The device according to claim 3, characterized
gekennzeichnet, daß die untere Führungsplatte (32) des Führungsapparates (33) eine nach aufwärts gerichtete Führungsrippe (34) aufweist.  characterized in that the lower guide plate (32) of the guide apparatus (33) has an upwardly directed guide rib (34).
5. Vorrichtung nach einem oder mehreren der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die 5. The device according to one or more of claims 2 to 4, characterized in that the
Führungsapparate (18, 33) zur Erzielung eines besonders kurzen Abstandes zwischen ihren  Guiding devices (18, 33) to achieve a particularly short distance between them
Austrittsenden (40, 41) und den Druckrollen (5, 9) unter einem flachen Winkel zueinander ausgerichtet sind und daß das Heizelement (42) mit geringem  Exit ends (40, 41) and the pressure rollers (5, 9) are aligned at a flat angle to each other and that the heating element (42) with little
Abstand zu den Druckrollen (5, 9) ortsfest  Distance to the pressure rollers (5, 9) stationary
angeordnet ist.  is arranged.
6. Vorrichtung nach Anspruch 5, wobei das Heizelement von. einer mit einem Heißluftgerät verbundenen 6. The device according to claim 5, wherein the heating element of. one connected to a hot air device
Heißluftdüse gebildet ist, dadurch gekennzeichnet, daß das Heißluftgerät (50) zwischen einer mit einem Mundstück (45) in Eingriff tretenden Arbeits- und einer von diesem entfernten Ruhestellung hin und herbewegbar ist und daß die Austrittsöffnung (Düse 51) des in Ruhestellung befindlichen A hot air nozzle is formed, characterized in that the hot air device (50) between a working position engaging with a mouthpiece (45) and a rest position remote therefrom and is movable and that the outlet opening (nozzle 51) of the in the rest position
Heißluftgerätes durch eine Umlenkklappe (54) abgeschirmt ist, die in dieser Stellung mit der Eintrittsöffnung (53) eines Abluftkanals (52) fluchtet und durch das Heißluftgerät (50) beim Bewegen in die Arbeitsstellung in eine Hot air device is shielded by a deflection flap (54), which in this position is aligned with the inlet opening (53) of an exhaust air duct (52) and by the hot air device (50) when moving into the working position in a
unwirksame Stellung wegschwenkbar ist. ineffective position is pivoted away.
PCT/EP1989/001174 1988-11-10 1989-10-06 Process and device for welding on a thermoplastic masking band WO1990005059A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838145A DE3838145C1 (en) 1988-11-10 1988-11-10
DEP3838145.1 1988-11-10

Publications (1)

Publication Number Publication Date
WO1990005059A1 true WO1990005059A1 (en) 1990-05-17

Family

ID=6366891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1989/001174 WO1990005059A1 (en) 1988-11-10 1989-10-06 Process and device for welding on a thermoplastic masking band

Country Status (2)

Country Link
DE (1) DE3838145C1 (en)
WO (1) WO1990005059A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045668A1 (en) * 2001-11-27 2003-06-05 C. F. Ploucquet Gmbh & Co. Method and device for producing a fluid-tight connection of layers of material and corresponding sealing
CN111645328A (en) * 2020-06-09 2020-09-11 滕春根 Ear band welding machine for medical mask production

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02246997A (en) * 1989-02-02 1990-10-02 Grammer Ag Delayed foaming cushion member and manufacturing method and apparatus therefor
JPH02239886A (en) * 1989-02-02 1990-09-21 Grammer Ag Method and device for tightly closing mutually-connected covering-part
WO1999056940A1 (en) * 1998-05-01 1999-11-11 W. L. Gore & Associates, Inc. Repeatably positionable nozzle assembly
US6789592B2 (en) * 2002-10-18 2004-09-14 Gore Enterprise Holdings, Inc. Apparatus and method for guiding the seam allowance in seam sealing
ITMI20071569A1 (en) * 2007-07-31 2009-02-01 Fra Ser S P A WELDING DEVICE FOR FABRICS
IT1394826B1 (en) * 2009-07-01 2012-07-20 Mcm Srl METHOD FOR THE MUTUAL BLOCKING OF THE EDGES OF ELEMENTS OF AN ARTICLE IN PARTICULAR FOOTWEAR, CLOTHING AND FURNITURE ARTICLES
IT1396634B1 (en) * 2009-11-27 2012-12-14 Fra Ser S P A THERMAL WELDING MACHINE FOR THE ASSEMBLY OF TEXTILE ARTICLES
CN105764748B (en) 2013-09-06 2018-03-06 江森自控科技公司 Adjustable car arm assembly with a rolling screen door
EP3107704B1 (en) * 2014-02-19 2021-03-24 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co., Ltd. Multi-layered shaped body for internal vehicle fittings and method for producing such shaped bodies
CN108950904A (en) * 2018-09-21 2018-12-07 深圳市雅诺科技股份有限公司 Fabric process equipment and fabric processing technology

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE841392C (en) * 1943-02-18 1952-06-16 Pfaff Ag G M Process for the production of durable waterproof seams and the device for carrying out the process
GB810314A (en) * 1956-02-29 1959-03-11 Heinz Moldau Improvements in and relating to piping seams in flexible materials
GB2046171A (en) * 1979-04-06 1980-11-12 Woodroof Lab Inc Fabric Elastomer Composite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE821843C (en) * 1950-10-13 1951-11-22 Telefunken Gmbh Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic
US3239402A (en) * 1962-07-23 1966-03-08 American Can Co Edge banding method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE841392C (en) * 1943-02-18 1952-06-16 Pfaff Ag G M Process for the production of durable waterproof seams and the device for carrying out the process
GB810314A (en) * 1956-02-29 1959-03-11 Heinz Moldau Improvements in and relating to piping seams in flexible materials
GB2046171A (en) * 1979-04-06 1980-11-12 Woodroof Lab Inc Fabric Elastomer Composite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045668A1 (en) * 2001-11-27 2003-06-05 C. F. Ploucquet Gmbh & Co. Method and device for producing a fluid-tight connection of layers of material and corresponding sealing
CN111645328A (en) * 2020-06-09 2020-09-11 滕春根 Ear band welding machine for medical mask production

Also Published As

Publication number Publication date
DE3838145C1 (en) 1990-04-26

Similar Documents

Publication Publication Date Title
DE3838145C1 (en)
DE2410055B2 (en) Method and device for welding strip material by means of ultrasound
DE102009033896B4 (en) Continuous welding machine
DE1461907A1 (en) Process for the continuous production of rectangular hoses and suitable devices for carrying out these processes
DE2142345C2 (en) A method of making a diaper and the like.
EP0385370A2 (en) Buckle folder
DE2414262C3 (en) Method and apparatus for producing a nail strip
DE102004016385B3 (en) Roller folder for joining sheet metal edges has folding edge and folding bed with folding roller attached to robot mounted rolling head
DE3133998A1 (en) "CONNECTING DEVICE"
DE1958989C3 (en) Device for mutual, continuous welding of the adjacent edge zones of two sheets of thermoplastic material
DE2914696C2 (en) Device for applying rider tapes provided with an adhesive to the flat front edges of hose sections or sacks
DE4207840C2 (en) Freely programmable application device for media such as sealant, adhesive etc.
DE19810070C2 (en) Device and method for pressure welding wire
DE4019484C2 (en)
DE3632157C2 (en)
DE3016582C2 (en) Device for securing the weld pool during mechanized welding in a forced position
DE19920725B4 (en) clamping unit
DE2528348B2 (en) Device for the preparation of seams for ironing machines suitable for ironing
DE3600049A1 (en) Method and arrangement for mounting seam sealing bands on inlet plate blanks
DE1130998B (en) Device for applying a cover strip made of thermoplastic material to the edge of a flat material
DE2621799A1 (en) METHOD AND DEVICE FOR SEALING A PLASTIC STRIP
EP0021450A1 (en) Pressure feeding device for an apparatus for continuously crumpling a fabric
DE3912782A1 (en) Nozzle applying adhesive or sealing compound - has step formed on nozzle end face to control thickness of compound
DE3917093C1 (en) Process for sealing seams - is for multi-section cover of upholstery parts which have been foamed at back
DE3600589C1 (en) Apparatus for drawing a side-folding tube of heat-shrinkable plastic over a product stack

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP SE US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE