EP4175819A1 - Contre-outil, machine de soudage aux ultrasons et procédé pour produire un cordon étanche et cosmétique - Google Patents

Contre-outil, machine de soudage aux ultrasons et procédé pour produire un cordon étanche et cosmétique

Info

Publication number
EP4175819A1
EP4175819A1 EP21742725.1A EP21742725A EP4175819A1 EP 4175819 A1 EP4175819 A1 EP 4175819A1 EP 21742725 A EP21742725 A EP 21742725A EP 4175819 A1 EP4175819 A1 EP 4175819A1
Authority
EP
European Patent Office
Prior art keywords
counter
tool
sealing surface
sealing
counter tool
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
EP21742725.1A
Other languages
German (de)
English (en)
Inventor
Andreas Runck
Jürgen PFROMMER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Herrmann Ultraschalltechnik GmbH and Co KG
Original Assignee
Herrmann Ultraschalltechnik GmbH and Co KG
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 Herrmann Ultraschalltechnik GmbH and Co KG filed Critical Herrmann Ultraschalltechnik GmbH and Co KG
Publication of EP4175819A1 publication Critical patent/EP4175819A1/fr
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
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81469—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/20—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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7373—Joining soiled or oxidised materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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
    • B29C66/81—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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92451—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power using joining tools having different pressure zones or using several joining tools with different pressures
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/146—Closing bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding

Definitions

  • the present invention relates to a counter tool for an ultrasonic welding machine, an ultrasonic welding machine with such a counter tool and a method for producing a sealing and cosmetic seam which the ultrasonic welding machine uses.
  • Packaging technology is constantly changing.
  • Recyclable stand-up pouches e.g. B. from polypropylene monomaterials are more common. These are used, for example, to pack wet animal feed. Two layers of a mostly rectangular cut material are welded together to form the packaging.
  • sealing seam is created, which is intended to ensure that the packaging is sealed tightly.
  • material layer end sections that are not part of the sealing seam.
  • These non-welded end sections of the material layer are not desired for optical reasons, among other things, so that these components that are not necessary for sealing the packaging are also welded to one another.
  • a so-called cosmetic seam is applied directly next to the sealing seam, which essentially serves to improve the appearance of the pack and prevents soiling, such as product residues, from collecting in the open area of the pack.
  • the material often has a carrier and a sealing layer.
  • the melting temperature difference between the carrier layer and the sealing layer is small, which requires very reliable process reliability when welding the material layers.
  • the welding temperature is therefore chosen as low as possible in order to avoid thermal damage to the carrier layer. This causes unwanted shrinkage of the top edge of the bag due to excessive Avoided heat input. However, the risk of weld seams opening again increases significantly.
  • the seam is made in the material with the help of heat sealing jaws.
  • the seam can also be produced in an ultrasonic welding machine.
  • the material layers are positioned between a sonotrode and a counter-tool and then the sonotrode is set in an ultrasonic vibration and pressed against the material layers. Processing with ultrasound has the advantage that the heat is only generated where it is actually needed for the welding process.
  • the sealing seam and the cosmetic seam are introduced into the material in two work steps in separate welding stations.
  • First attempts to insert both a sealing seam and a cosmetic seam into the packaging in a single welding station with the aid of an ultrasonic welding machine have failed, as there is no reliable process control here. If the sonotrode and counter tool are pressed against one another with too little force during welding, there is a risk that the cosmetic seam will open again after welding. In order to prevent this, the force with which the sonotrode and counter tool are pressed against one another during the welding processing of the material layers would have to be increased, which could damage the sealing seam. There are cases in which the force would have to be reduced for an optimal sealing seam and the force would have to be increased for an optimal cosmetic seam or vice versa. However, both requirements cannot be met at the same time.
  • a counter-tool for an ultrasonic welding machine having two separate sealing surfaces which are intended to come into contact with a material to be processed.
  • One sealing surface is provided for producing the sealing seam, while the other sealing surface is provided for producing the cosmetic seam.
  • the counter tool is designed in two parts, the two parts of the counter tool being movable relative to one another and each of the two parts having one of the two sealing surfaces. Due to the relative mobility of the two parts, the force applied by the counter-tool to the material to be processed for the two separate sealing surfaces can now be increased or decreased independently of one another, which significantly increases the process reliability of the method described.
  • the sealing and cosmetic seam welding processes can be separated in time, which guarantees reliable process control, since the process parameters for checking the seam quality can now be evaluated in two separate welding processes.
  • At least one of the two parts has a drive with which this part can be moved relative to the other part.
  • the two parts of the counter tool are movable relative to each other in such a way that in a first position the first sealing surface protrudes over the second sealing surface and in a second position the second sealing surface protrudes over the first sealing surface.
  • This measure can ensure that welding is only possible over the first sealing surface or only over the second sealing surface.
  • the counter tool can have a deflection element which presses the pack into the slot provided for this in the ultrasonic welding tool (sonotrode) and thus prevents the pack from slipping during the welding process. This fixation of the pack may be necessary to ensure a guaranteed tight and reproducible ultrasonic weld of the sealing seam.
  • the deflecting element can be arranged between the two sealing surfaces.
  • the pack can also be clamped directly above the sealing tools with an additional clamping device, which makes the use of a deflection element and a slot in the ultrasonic welding tool (sonotrode) superfluous. Since the cosmetic seam has no tightness requirement, the cosmetic seam can be welded without fixing the pack.
  • the first part of the counter tool can have a front surface with a protruding section which has the first sealing surface, the second part of the counter tool on the front surface, but not on the protruding one Portion of the first part of the counter tool and is positioned movable bar relative to the front surface.
  • the first sealing surface of the counter-tool is an elongated sealing contour with a structureless surface
  • the second sealing surface of the counter-tool which is provided for producing the cosmetic seam
  • a structureless surface is understood to mean that the surface is smooth.
  • a structured surface is understood to mean that the surface has a multiplicity of separate or interconnected structural elements which protrude over the surface or are embedded in it so that they form depressions.
  • the first sealing surface can be flat. But it can also be convexly curved.
  • the first sealing surface can be in the form of a bead with a radius between 1 and 5 mm.
  • the aforementioned object is achieved in that the ultrasonic welding machine has a sonotrode which can be excited in an ultrasonic vibration and has the counter tool described.
  • the sonotrode has a flat, optionally interrupted, sealing surface which contains two sealing surface sections which are each arranged opposite a sealing surface of the counter-tool.
  • One sealing surface section is provided to work together with the first sealing surface of the counter tool to produce the sealing seam, while the other sealing surface section is provided to work together with the second sealing surface of the counter tool to produce the cosmetic seam.
  • the separation of the sealing surface sections in the sonotrode can be dispensed with.
  • the object is achieved in that a sealing and cosmetic seam is produced with the following steps:
  • step D) Moving the sonotrode and counter-tool towards each other so that the multi-layer material to be welded comes into contact with both the sealing surface of the sonotrode and the first sealing surface of the counter-tool, with the sonotrode in an ultrasonic oscillation during step D) and / or thereafter is moved,
  • step E) Moving the second part of the counter tool relative to the first part of the counter tool in such a way that the multi-layer material to be welded comes into contact with the sealing surface of the sonotrode as well as the second sealing surface of the counter tool, whereby during step E) and / or then tungsd the sonotrode is set in an ultrasonic oscillation.
  • step E) the movement can take place in such a way that the first sealing surface of the counter-tool does not come into contact with the multi-layer material to be welded.
  • the excitation of the sonotrode can already take place during the movement steps D) or E). However, it is also possible that the excitation of the sonotrode with ultrasound only takes place when the movement steps D) or E) have ended and the multi-layer material with the Sonotrode and the first or second part of the counter-tool is in contact. After movement steps D) or E), a rest phase of, for example, 20 ms can initially be provided before the sonotrode is excited with an ultrasonic vibration.
  • the multi-layer material to be welded is held with a holding device during step D) and / or E) in such a way that a relative movement of the individual layers of the multi-layer material is prevented.
  • both the sealing seam and the Kos metiknaht can be produced in just one welding station, the two seams are sequential in time depending on the position of the second part of the counter-tool generated.
  • the force applied to the multilayer material via the first part of the counter tool to create the sealing seam has no effect on the cosmetic seam in the embodiment according to the invention, since the second part of the counter tool is not in contact with the multilayer material at this moment.
  • the force applied to the multilayer material via the second part of the counter tool to generate the cosmetic seam has no effect on the sealing seam, since the first part of the counter tool is not in contact with the multilayer material at this moment.
  • FIG. 1 shows a schematic representation of a first embodiment according to the invention
  • FIG. 2 shows the embodiment from FIG. 1 in a first position
  • FIG. 4 shows a side view of a second embodiment in a first position
  • FIG. 5 shows a side view of the second embodiment in a second position.
  • a sonotrode 1 has two sealing surface sections 8, 9 which lie in a common sealing surface.
  • the two sealing surface sections 8, 9 are separated from one another by a recess 12.
  • the sonotrode 1 is arranged on one side of a material 5 which consists of at least two layers of material that are to be welded to one another.
  • a counter tool 2 according to the invention is arranged opposite the material 5. This likewise has two sealing surfaces, namely the sealing surface 6 and the sealing surface 7.
  • a deflection element 10 is arranged between the two sealing surfaces, which, when the sonotrode and counter tool are moved towards each other, dips into the recess 12 of the sonotrode and fixes the material 5 there in such a way that the individual layers of the multi-layer material cannot slip relative to one another.
  • the counter tool 2 consists of two parts, namely a first part 3 and a second part 4.
  • the first part 3 has the first sealing surface 6.
  • the second part 4 has the second sealing surface 7, which is structured on its surface in the example shown.
  • the counter-tool is first inserted into the position shown in FIG brought the position shown, ie with the help of the mechanism 11, the second part 4 of the counter tool 2 is moved relative to the first part 3 of the counter tool 2 in such a way that the first sealing surface 6 protrudes in the direction of the sonotrode 1 opposite the second sealing surface 7.
  • the mechanism 11 of the counter tool is actuated in order to bring the counter tool into the position shown in FIG. In this position, the second part 4 of the counter tool projects two in the direction of the sonotrode 1 opposite the first part 3 of the counter tool 2.
  • the distance between the highest elevations of the sealing surfaces 6 and 7 is b or a, as shown in FIGS. 2 and 3.
  • a and b are each approximately 1 mm.
  • the counter tool can also be constructed differently, as shown in FIGS. 4 and 5.
  • the counter-tool is also in two parts consisting of a first part 3 ', which has a stepped surface oriented in the direction of the sonotrode 1, the sealing surface 6 being on the protruding part of the step, which in the position shown in FIG the sonotrode 1 presses.
  • the second part 4 ‘of the counter tool 2 is not in contact with the material.
  • the second part 4 ‘ is arranged on the stepped surface of the first part of the counter-tool, so that it does not protrude over the stepped section.
  • the second part 4 'of the counter-tool can, however, as can be seen in FIG whose sealing surface provided with structural elements comes into contact with the material 5 and presses it against the sonotrode 1. If you compare the positions shown in Figures 4 and 5, you can see that in FIG. 5 the first part 3 'of the counter tool has been moved away from the sonotrode 1, while the second part 4' has been moved in the direction of the sonotrode.
  • the second part 4 is moved back and forth relative to the first part 3‘ of the counter-tool 4 by means of a pneumatic cylinder.
  • a stop can be provided which interacts either with the second part 4 'or with the pneumatic cylinder to move the second part 4' beyond the position shown in FIG. 5 in the direction of the sonotrode 1 to prevent.
  • a sealing seam and a cosmetic seam can now be produced at a welding station.
  • the two parts of the counter tool can be pressed onto the material with the desired welding force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne un contre-outil pour une machine de soudage aux ultrasons, le contre-outil présentant deux surfaces de scellement séparées qui sont conçues pour entrer en contact avec un matériau à traiter. L'invention est caractérisée en ce que le contre-outil est constitué de deux pièces, les deux pièces du contre-outil étant mobiles l'une par rapport à l'autre, et chacune des deux pièces présentant l'une des deux surfaces de scellement.
EP21742725.1A 2020-07-02 2021-06-23 Contre-outil, machine de soudage aux ultrasons et procédé pour produire un cordon étanche et cosmétique Pending EP4175819A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020117463.2A DE102020117463A1 (de) 2020-07-02 2020-07-02 Gegenwerkzeug, Ultraschallschweißmaschine sowie Verfahren zur Erzeugung einer Dicht- und Kosmetiknaht
PCT/EP2021/067074 WO2022002706A1 (fr) 2020-07-02 2021-06-23 Contre-outil, machine de soudage aux ultrasons et procédé pour produire un cordon étanche et cosmétique

Publications (1)

Publication Number Publication Date
EP4175819A1 true EP4175819A1 (fr) 2023-05-10

Family

ID=76958907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21742725.1A Pending EP4175819A1 (fr) 2020-07-02 2021-06-23 Contre-outil, machine de soudage aux ultrasons et procédé pour produire un cordon étanche et cosmétique

Country Status (6)

Country Link
US (1) US20230241845A1 (fr)
EP (1) EP4175819A1 (fr)
JP (1) JP2023531700A (fr)
CN (1) CN115720548A (fr)
DE (1) DE102020117463A1 (fr)
WO (1) WO2022002706A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024019049A1 (fr) * 2022-07-21 2024-01-25 Ｔｏｐｐａｎホールディングス株式会社 Stratifié pour emballage, procédé de sélection associé, procédé d'évaluation associé, sac d'emballage et procédé de production associé

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136875B2 (fr) 1971-05-07 1973-05-11 Chupin Clement Papeterie
US3905862A (en) 1973-10-17 1975-09-16 Hitachi Ltd Caulking apparatus
JP3238860B2 (ja) 1996-04-12 2001-12-17 グンゼ株式会社 超音波シール装置
ATE394214T1 (de) * 2001-02-15 2008-05-15 Greif Velox Maschf Gmbh Verfahren und vorrichtung zum ausbilden und/oder verschliessen einer verpackungseinheit
CN1285459C (zh) * 2001-03-28 2006-11-22 尤妮佳股份有限公司 密封装置和具有密封部分的柔软物品的制造工艺
DE10214405A1 (de) 2002-03-30 2003-10-09 Herrmann Ultraschalltechnik Vorrichtung sowie Verfahren zum Verschweißen dünnwandiger Werkstücke mittels Ultraschall
US6745543B2 (en) * 2002-05-21 2004-06-08 Greif-Velox Maschinenfabrik Gmbh Method and apparatus for forming and/or sealing a packaging unit
EP1447204A1 (fr) 2003-02-12 2004-08-18 Telsonic Holding AG Appareil et procédé pour le travail d'éléments
RS52603B (en) 2006-05-11 2013-04-30 Indag Gesellschaft für Industriebedarf mbH & Co. Betriebs KG ULTRASONIC WELDING DEVICE
FR3019083B1 (fr) * 2014-04-01 2016-12-30 Sonimat Dispositif de soudure par ultrasons

Also Published As

Publication number Publication date
CN115720548A (zh) 2023-02-28
US20230241845A1 (en) 2023-08-03
JP2023531700A (ja) 2023-07-25
DE102020117463A1 (de) 2022-01-05
WO2022002706A1 (fr) 2022-01-06

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