SE522085C2 - Apparatus for joining layers of material by ultrasonic welding - Google Patents

Apparatus for joining layers of material by ultrasonic welding

Info

Publication number
SE522085C2
SE522085C2 SE0000459A SE0000459A SE522085C2 SE 522085 C2 SE522085 C2 SE 522085C2 SE 0000459 A SE0000459 A SE 0000459A SE 0000459 A SE0000459 A SE 0000459A SE 522085 C2 SE522085 C2 SE 522085C2
Authority
SE
Sweden
Prior art keywords
ultrasonic
opposite
units
material layers
sonotrodes
Prior art date
Application number
SE0000459A
Other languages
Swedish (sv)
Other versions
SE0000459D0 (en
SE0000459L (en
Inventor
Georg Lang
Original Assignee
Branson Ultraschall
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 Branson Ultraschall filed Critical Branson Ultraschall
Publication of SE0000459D0 publication Critical patent/SE0000459D0/en
Publication of SE0000459L publication Critical patent/SE0000459L/xx
Publication of SE522085C2 publication Critical patent/SE522085C2/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
    • 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
    • B29C66/849—Packaging machines
    • B29C66/8491—Packaging machines welding through a filled container, e.g. tube or bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • B23K20/106—Features related to 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
    • 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
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • 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
    • B29C65/088—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using several cooperating sonotrodes, i.e. interacting with each other, e.g. for realising the same 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
    • B29C66/01—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
    • B29C66/40—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
    • 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
    • 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
    • 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
    • B29C66/81465—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 behind the other in a single row in the feed direction
    • 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
    • B29C66/83—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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2313/00—Use of textile products or fabrics as reinforcement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The ultrasonic welding device has a first ultrasound unit (6) on one side of the material layers (2, 4) and a second one (14) on the opposite side. The sonotrodes (12, 20) act with each other during the welding process so that their ultrasonic energy is supplied simultaneously to the joint region of the materials joined.

Description

nn-n oss nnu n n nn n» nn n n n nn nn n n nn n n na n nn n n nn nn n n vn n n n n n n n i v con uno n n n in n n n n n n n annu n n n n n n nn n n u w n n I a n n nn nu nn nnn nnn n 2 en andra ultraljudenhet varvid sonotroderna i de mittemot varan- dra liggande ultraljudenheterna så samverkar för genomförande av svetsförloppet att de inleder sin ultraljudenergi samtidigt från motliggande sidor i fogområdet för de materialskikt som skall sammanfogas. nn-n oss nnu nn nn n »nn nnn nn nn nn nn nn nn na n nn nn nn nn nn nn vn nnnnnnniv con uno nnn in nnnnnnn annu nnnnnn nn nnuwnn I ann nn nu nn nnn nnn nnn n 2 another ultrasound unit with the sonotrodes in the opposite each other, the ultrasonic units lying together for the purpose of carrying out the welding process cooperate so that they initiate their ultrasonic energy at the same time from opposite sides in the joint area for the material layers to be joined.

Då sålunda mer ultraljudenergi per tidsenhet inledes i fogområdet minskar svetstiden avsevärt. Såsom försök har visat kan genom uppfinningen svetstiden relativt en vanlig svetsanord- ning med ett “passivt” städ halveras. En ytterligare fördel med uppfinningen består däri att de materialskikt som skall samman- . fogas ej kan bli hängande vid städet.Thus, as more ultrasonic energy per unit time is initiated in the joint area, the welding time is considerably reduced. As experiments have shown, by means of the invention the welding time can be halved relative to an ordinary welding device with a “passive” anvil. A further advantage of the invention consists in that the material layers to be joined. can not be hung on the anvil.

Det är klart att vid den enligt uppfinningen utformade anordningen måste de motliggande ultraljudenheterna beträffande sina svetsparametrar såsom t.ex. effekt, frekvens, fas och amplitud avstämmas till varandra. Lämpligen är sonotroderna i det motliggande ultraljudenheterna så utformade att de inleder sin ultraljudenergi med lika stor och motsatt riktad svängnings- amplitud i fogområdet. Allt efter användningen är det dock möjligen fördelaktigt att så styra ultraljudenheterna att de avger sin ultraljudenergi med olika frekvens och/eller fas och/eller amplitud och/eller effekt.It is clear that in the device designed according to the invention, the opposite ultrasonic units must relate to their welding parameters such as e.g. power, frequency, phase and amplitude are matched to each other. Suitably the sonotrodes in the opposite ultrasonic units are designed so that they initiate their ultrasonic energy with equal and opposite directional oscillation amplitude in the joint area. Depending on the application, however, it is possibly advantageous to control the ultrasonic units so that they emit their ultrasonic energy with different frequency and / or phase and / or amplitude and / or power.

Ultraljudenheterna kan vara anslutna till en gemensam generator eller även till skilda generatorer. För att möjliggöra en precis styrning av svetsparametrarna skall det lämpligen röra sig om digitala generatorer.The ultrasonic units can be connected to a common generator or even to separate generators. In order to enable a precise control of the welding parameters, these should suitably be digital generators.

Speciellt fördelaktigt kan den enligt uppfinningen utformade anordningen användas vid en såkallad slangpåsmaskin vid vilken de materialskikt som skall sammanfogas består av tvärsömmar i en slangformig kropp som skall uppdelas i behållar- rum. Härvid är lämpligen anordnad en transportanordning som förflyttar de motliggande ultraljudenheterna mot varandra före börjar av svetsförloppet från ett utgångsläge för att bringa deras sonotroder till anliggning med tvârsömmarna som linjärt vidareförflyttar de motliggande ultraljudenheterna under svets- förloppet gemensamt med den slangformade kroppen, som förflyttar de motliggande ultraljudenheterna efter svetsförloppets slut bort från varandra för att bringa deras sonotroder ur ingrepp med tvärsömmarna, och som flyttar tillbaka de båda motliggande ultraljudenheterna anslutningsvis till sina utgångslägen.Particularly advantageously, the device designed according to the invention can be used in a so-called hose bag machine in which the material layers to be joined consist of transverse seams in a hose-shaped body which is to be divided into container spaces. In this case, a transport device is suitably provided which moves the opposite ultrasonic units towards each other before the start of the welding process from an initial position in order to bring their sonotrodes into contact with the transverse seams which linearly move the opposite ultrasonic units during the welding process together with the opposite after the end of the welding process away from each other to bring their sonotrodes out of engagement with the transverse seams, and which move the two opposite ultrasound units back to their initial positions.

Vidare lämpliga utformningar enligt uppfinningen defi- nieras i underpatentkraven.Further suitable designs according to the invention are defined in the sub-patent claims.

I samband med ritningarna beskrivs närmare utföringsex- empel av uppfinningen. Därvid visar: Fig. 1 på schematiskt sätt en ultraljudsvetsanordning vid vilken ultraljudenergin inledes genom longitudinel la vågor i de materialskikt som skall sammanfogas; Fig. 2 en rotationssvetsanordning vid vilken ultraljudenergin inledes genom transversella svängning ar i de materialskikt som skall sammanfogas; Fig. 3 på starkt schematiserat sätt en sidovy av anordningen i figur 4; Fig. 4 i starkt schematiserat framställning en slangpåsmaskin med en enligt uppfinningen utformad ultraljudsvetsanordning.In connection with the drawings, more detailed embodiments of the invention are described. In this case: Fig. 1 schematically shows an ultrasonic welding device in which the ultrasonic energy is initiated by longitudinal waves in the material layers to be joined; Fig. 2 is a rotary welding apparatus in which the ultrasonic energy is initiated by transverse oscillation in the material layers to be joined; Fig. 3 is a highly schematic side view of the device of Fig. 4; Fig. 4 in a highly schematic representation of a hose bag machine with an ultrasonic welding device designed according to the invention.

Den i figur 1 schematiskt visade ultraljudsvetsanord- ningen tjänar för svetsning eller för försegling av två materi- alskikt 2,4. Vid materialskikten 2,4 kan det röra sig om tvà skilda delar eller även om två sömmar i en och samma del. Som material i materialskikten 2,4 kommer i princip i fråga alla medelst ultraljud svetsbara material i banform eller annan form sàsom t.ex. termoplaster, textila ytmönster såsom t.ex. fiber- textil fler än två materialskikt svetsas med varandra. (nonwoven), belagt papper osv. Naturligtsvis kan även Den i figur 1 visade svetsanordningen har en övre ultraljudenhet 6 som på vanligt sätt består av en konverter 8, en booster 10 och en sonotrod 12. Konverten 8 är förbunden med en (ej visad) generator som omvandlar elektrisk energi av 50 Hz till elektrisk energi av t.ex. 20 kHz. Konverten 8 återigen omvandla den elektriska energin av 20 kHz till mekanisk energi dvs. svängningar av 20 kHz som sedan av sonotroden inleds i form av longitudinella svängningar i fogområdet för de båda material- skikten 2,4 som skall sammanfogas. Den mellan konverten och sonotroden 12 anordnade boostern 10 är en amplitudtransformator för att höja eller minska svängningsamplituden.The ultrasonic welding device shown schematically in Figure 1 serves for welding or for sealing two layers of material 2,4. The material layers 2,4 can be two different parts or even two seams in one and the same part. As material in the material layers 2,4, in principle all materials which can be welded by means of ultrasound in web form or other form, such as e.g. thermoplastics, textile surface patterns such as e.g. fiber textile more than two layers of material are welded together. (nonwoven), coated paper, etc. Of course, the welding device shown in Figure 1 can also have an upper ultrasonic unit 6 which in the usual way consists of a converter 8, a booster 10 and a sonotrode 12. The converter 8 is connected to a generator (not shown) which converts electrical energy of 50 Hz. to electrical energy of e.g. 20 kHz. The converter 8 again converts the electrical energy of 20 kHz into mechanical energy, ie. oscillations of 20 kHz which are then initiated by the sonotrode in the form of longitudinal oscillations in the joint area for the two material layers 2,4 to be joined. The booster 10 arranged between the converter and the sonotrode 12 is an amplitude transformer for raising or decreasing the oscillation amplitude.

Pà den ultraljudenheten 6 motliggande sidan av materi- alskikten 2,4 är anordnad en andra ultraljudenhet 14 som liksom 522 085 u um 4 ultraljudenheten 6 består av en konverter 16, en booster 18 och en sonotrod 20. Arrangemanget är härvid så utfört att de båda ultraljudenheterna 6, 14 ligger på samma axel men dock är mot- satt riktade.Arranged on the opposite side of the material layers 2,4 on the ultrasonic unit 6 is arranged a second ultrasonic unit 14 which, like the 522 085 u um 4 ultrasonic unit 6, consists of a converter 16, a booster 18 and a sonotrode 20. The arrangement is designed so that the two the ultrasonic units 6, 14 lie on the same axis but are oppositely directed.

Under svetsförloppet trycks sonotroderna 12, 20 i de båda ultraljudenheterna 6, 14 med ett på förhand givet svet- stryck från motliggande sidor mot de materialskikt 2,4 som skall sammanfogas och försätts därefter i svängningar. Sonotroderna 12, 20 leder sålunda samtidigt sin ultraljudenergi från motlig- gande sidor in i fogområdet för de materialskikt 2,4 som skall sammanfogas. Härvid styrs de av en gemensam generator (ej visad) eller av två skilda generatorer (ej visade) så att deras sväng- ningsparametrar såsom amplitud, frekvens och fas avstäms till varandra för att uppnå ett optimalt svetsresultat. Lämpligen sker styrningen på det sättet att de motliggande sonotroderna 12, 20 inleder sin ultraljudenergi med lika stor, dock motsatt riktad amplitud i fogområdet.During the welding process, the sonotrodes 12, 20 in the two ultrasonic units 6, 14 are pressed with a predetermined welding pressure from opposite sides against the material layers 2,4 to be joined and are then subjected to oscillations. The sonotrodes 12, 20 thus simultaneously conduct their ultrasonic energy from opposite sides into the joint area of the material layers 2,4 to be joined. In this case, they are controlled by a common generator (not shown) or by two different generators (not shown) so that their oscillation parameters such as amplitude, frequency and phase are matched to each other in order to achieve an optimal welding result. Conveniently, the control takes place in such a way that the opposite sonotrodes 12, 20 initiate their ultrasonic energy with an equal, but oppositely directed amplitude in the joint area.

Uppgår effekten hos en ultraljudenhet exempelvis till 2000 W så kan båda ultraljudenheterna 6, 14 gemensamt - åtmin- stone teoretiskt - inleda en effekt av 4000 W i fogområdet. Det framgår därav utan vidare att härigenom kan svetstiden motsva- rande förkortas (halveras).If the power of an ultrasonic unit is, for example, 2000 W, then both ultrasonic units 6, 14 can jointly - at least theoretically - initiate an effect of 4000 W in the joint area. It is clear from this that in this way the welding time can be correspondingly shortened (halved).

Som redan nämnts inledningsvis år generatorn resp. generatorerna lämpligen utformade som digitala generatorer då härigenom svetsparametrarna såsom effekt, amplitud, frekvens och fas kan styras särskilt exakt och med nära nog valfri mångfald.As already mentioned in the introduction, the generator resp. the generators are suitably designed as digital generators, as a result of which the welding parameters such as power, amplitude, frequency and phase can be controlled particularly precisely and with almost any diversity.

Som antyds i fig. 1 av pilen A dras materialskikten 2,4 under svetsförloppet genom mellan de båda sonotroderna 12, 20 alltså förflyttas linjärt relativt de stationårt anordnade sonotroderna 12, 20. Det är dock klart att de materialskikt resp. delar som skall sammanfogas allt efter användningsfall likaså kan hållas stationära.As indicated in Fig. 1 by the arrow A, the material layers 2,4 are drawn during the welding process by moving between the two sonotrodes 12, 20, i.e. moving linearly relative to the stationary sonotrodes 12, 20. It is clear, however, that the material layers resp. parts to be joined according to the case of use can also be kept stationary.

Vid den i fig. 2 och 3 visade utföringsformen vid vilken de mot fig. 1 svarande konstruktionsdelarna år betecknade med samma hänvisningssiffror är återigen anordnade två ultralju- denheter 6 och 14 som är anordnade på motliggande sidor av de materialskikt 2,4 som skall sammanfogas. Olika relativt utfö- ringsformen enligt fig. 1 är dock arrangemanget av ultraljuden- heterna 6, 14 samt formen på sonotroderna 12, 20. _12, 20 i riktningen för pilen A (fig. 3). 5 Vid de avsmalnande ändarna av sonotroderna 12, 20 är formade cirkelcylindriska skivor (se fig. 3) som kan vara randa- de på sina ytor (fig. 2). Ultraljudenheternas 6, 14 symmetriax- lar S år ej som i fig. 1 vertikala utan anordnade parallellt med ytorna på de materialskikt 3, 4 som skall sammanfogas (fig. 2).In the embodiment shown in Figs. 2 and 3, in which the construction parts corresponding to Fig. 1 are denoted by the same reference numerals, two ultrasound units 6 and 14 are again arranged which are arranged on opposite sides of the material layers 2,4 to be joined. However, different relative to the embodiment according to Fig. 1 is the arrangement of the ultrasonic units 6, 14 and the shape of the sonotrodes 12, 20. _12, 20 in the direction of the arrow A (Fig. 3). At the tapered ends of the sonotrodes 12, 20 are formed circular-cylindrical discs (see Fig. 3) which may be striped on their surfaces (Fig. 2). The axes of symmetry S of the ultrasonic units 6, 14 are not vertical as in Fig. 1 but are arranged parallel to the surfaces of the material layers 3, 4 to be joined (Fig. 2).

Vidare är ultraljudenheterna 6, 14 och sålunda dess sonotroder 12, 20 lagrade vridbara runt sina symmetriaxlar S.Furthermore, the ultrasonic units 6, 14 and thus its sonotrodes 12, 20 are mounted rotatably about their axes of symmetry S.

Under svetsförloppet roterar ultraljudenheterna 6, 14 runt sina symmetriaxlar S och samtidigt dras materialskikten 3, 4 igenom mellan de cirkelcylindriska ansatserna av sonotroderna Sonotroderna 12, 20 utför sålunda en rullrörelse med avseende på de materialskikt 3, 4 som skall sammanfogas.During the welding process, the ultrasonic units 6, 14 rotate about their axes of symmetry S and at the same time the material layers 3, 4 are pulled through between the circular-cylindrical shoulders of the sonotrodes. The sonotrodes 12, 20 thus perform a rolling movement with respect to the material layers 3, 4 to be joined.

Ultraljudenergin överförs från sonotroderna 12, 20 i form av transversella svängningar på materialskikten 2, 4 som skall sammanfogas såsom detta år antytt genom pilen T i fig. 2.The ultrasonic energy is transmitted from the sonotrodes 12, 20 in the form of transverse oscillations on the material layers 2, 4 which are to be joined as indicated this year by the arrow T in Fig. 2.

För övrigt samverkar de motliggande sonotroderna 12, 20 på samma sätt som vid utföringsformen enligt fig. 1.Incidentally, the opposite sonotrodes 12, 20 cooperate in the same way as in the embodiment according to Fig. 1.

Vid den i figur 4 visade utföringsformen är anordnade två par av ultraljudenheter 6, 14 och 6', 14' som bildar en del av en endast schematisk antydd slangpàsmaskin. I slangpäsmaski- nen avdrages en materialbana 21 t.ex. i form av en plastfolie eller ett belagt papper vertikalt nedåt från en rulle 22 och formas medelst en formskuldra 24 till en slang 26 vars lângdsömm tillslutes på ett här icke vidare intresserande sätt. Slangen 26 som över ett fyllrör 27 fylls med en vätska uppdelas medelst tvärsömmar i slutna behållare. Dessa tvärsömmar bildar vid detta utföringsexempel materialskikten 2, 4 resp. 2', 4' som skall sammanfogas resp. förseglas medelst de motliggande ultraljuden- heterna 6, 14 och 6', 14'.In the embodiment shown in Figure 4, two pairs of ultrasonic units 6, 14 and 6 ', 14' are arranged which form part of a hose fitting machine only schematically indicated. In the hose punching machine, a web of material 21, e.g. in the form of a plastic foil or a coated paper vertically downwards from a roll 22 and is formed by means of a mold shoulder 24 into a hose 26 whose longitudinal seam is closed in a manner not further interesting here. The hose 26 which is filled with a liquid over a filling pipe 27 is divided by means of transverse seams into closed containers. In this exemplary embodiment, these transverse seams form the material layers 2, 4 and 2 ', 4' to be joined resp. sealed by means of the opposite ultrasound units 6, 14 and 6 ', 14'.

Ultraljudenheterna 6, 14 och 6', 14' är utformade såsom vid utföringsformen enligt fig. 1 och anordnade på samma sätt relativt varandra samt relativt materialskikten. Skillnaden mot fig. 1 är dock att ultraljudenheterna 6, 14 och 6', 14' med- bringas under svetsföloppet gemensamt med slangen 26. För detta ändamål är en transportanordning anordnad i form av två roteran- de transportörer 28, 30 som endast genom rörelseförloppet år schematiskt antydda i fig. 4.The ultrasonic units 6, 14 and 6 ', 14' are designed as in the embodiment according to Fig. 1 and are arranged in the same way relative to each other and relative to the material layers. The difference with Fig. 1, however, is that the ultrasonic units 6, 14 and 6 ', 14' are brought along during the welding process together with the hose 26. For this purpose, a transport device is arranged in the form of two rotating conveyors 28, 30 which only through the movement process are schematically indicated in Fig. 4.

Funktionssättet och rörelseförloppet hos transporta- 52 2 10 8 5 šïï* - IlÉï- 6 nordningarna 28, 30 och därmed ultraljudenheterna 6, 14 och 6', 14' är såsom följer: Före början av ett svetsförlopp förflyttas de varandra motliggande ultraljudenheterna 6, 14 längs sina symmetriaxlar S mot varandra till dess deras sonotroder 12, 20 angriper på motliggande sidor vid slangens 26 tvärsömmar. Under det nu följande svetsförloppet rör sig ultraljudenheterna 6, 14 verti- kalt nedåt tillsammans med slangen 26. Vid svetsförloppets slut föres ultraljudenheterna 6, 14 isär för att bringa deras sono- troder 12, 20 ur ingrepp med den slangformade kroppen 26. Härpå förflyttas ultraljudenheterna 6, 14 åter tillbaka till sitt utgångsläge.The mode of operation and the course of movement of the transport devices 28, 30 and thus the ultrasonic units 6, 14 and 6 ', 14' are as follows: Before the start of a welding process, the opposite ultrasonic units 6, 14 are moved. along their axes of symmetry S against each other until their sonotrodes 12, 20 engage on opposite sides at the transverse seams of the hose 26. During the subsequent welding process, the ultrasonic units 6, 14 move vertically downwards together with the hose 26. At the end of the welding process, the ultrasonic units 6, 14 are moved apart to bring their sonotrodes 12, 20 out of engagement with the hose-shaped body 26. The ultrasonic units are then moved 6, 14 back to its original position.

Det andra paret ultraljudenheter 6', 14' utför samma arbetscykel dock i tiden förskjutet till arbetscykeln för ultra- ljudenheterna 6, 14. Medan sålunda exempelvis ultraljudenheterna 6, 14 under svetsförloppet förflyttas nedåt med slangen 26 förflyttas ultraljudenheterna 6', 14' tillbaka förbi ultralju- denheterna 6, 14 till sitt utgångsläge så att ultraljudenheterna 6', 14' kan börja sitt svetsförlopp så snart ultraljudenheterna 6, 14 har avslutat sitt svetsförlopp. På detta sätt möjliggöres ett praktiskt taget kontinuerligt arbetssätt hos slangpåsmaski- nen.The second pair of ultrasonic units 6 ', 14' performs the same duty cycle, however, in time offset to the duty cycle of the ultrasonic units 6, 14. Thus, for example, the ultrasonic units 6, 14 during the welding process are moved downwards with the hose 26, the ultrasonic units 6 ', 14' are moved back past the ultrasound. the units 6, 14 to their initial position so that the ultrasonic units 6 ', 14' can begin their welding process as soon as the ultrasonic units 6, 14 have completed their welding process. In this way, a practically continuous operation of the hose bag machine is made possible.

Under svetsförloppet samverkar sonotroderna 12, 20 resp. 12', 20' för sammanfogning av svetssömmarna i princip på samma sätt som beskrivits i samband med fig. 1. Då på grund av det parvisa arrangemanget av ultraljudenheterna 6, 14 resp. 6', 14' väsentligt med ultraljudenergi per tidsenhet kan inledas i fogomràdet än vid traditionella slangpåsmaskiner med endast på en sida anordnade ultraljudenheter förkortas avsevärt svetstiden och därmed maskinens takttider. Maskinens omsättning kan sålunda nära nog fördubblas relativt en traditionell maskin.During the welding process, the sonotrodes 12, 20 resp. 12 ', 20' for joining the weld seams in principle in the same way as described in connection with Fig. 1. Then due to the pairwise arrangement of the ultrasonic units 6, 14 resp. 6 ', 14' substantially with ultrasonic energy per unit time can be started in the joint area than with traditional hose bag machines with ultrasonic units arranged only on one side, the welding time and thus the machine's running times are considerably shortened. The turnover of the machine can thus be almost doubled relative to a traditional machine.

Vid den visade utföringsformen är två par ultraljuden- heter visade. Det är dock klart att även endast ett par eller mer än två par vara anordnade. Naturligtsvis kan principen med de motliggande ultraljudenheterna förverkligas icke blott vid en vertikal slangpåsmaskin (fig. 4) utan även vid en horisontell slangpåsmaskin (med horisontell förflyttning av slangen).In the embodiment shown, two pairs of ultrasound units are shown. However, it is clear that even only one pair or more than two pairs can be provided. Of course, the principle of the opposite ultrasonic units can be realized not only with a vertical hose bag machine (Fig. 4) but also with a horizontal hose bag machine (with horizontal movement of the hose).

Claims (6)

1. o o o .o u u .o n':: u u. PATENTKRAV 1 'AnAwAn-I i . rnivruuii ng för en slangpåsmaskin för sammanfogning av minst två materialskikt medelst ultraljudsvetsning med en på en sida av materialskikten (2, 4) anordnad första ultraljudenhet (6) och en på motliggande sidan av materialskikten (2, 4) anordnad andra ultraljudenhet (14), vilkas sonotroder (12, 20) så samverkar för att genomföra svetsförloppet att de inleder sin ultraljudenergi samtidigt från motliggande sidor i fogområdet för de materialskikt (2, 4) som skall sammanfogas, vid vilken de materialskikt som skall sammanfogas består av tvärsömmarna i en slangformig kropp som skall uppdelas i behållare, kämnetecknad av en transportanordning (28, 30) som förflyttar de motliggande ultraljudenheterna (6, 14) före början av svetsför-loppet från ett utgångsläge mot varandra, som linjärt vidareförflyttar de motliggande ultraljudenheterna (6, 14) under svetsförloppet gemensamt med den slangformade kroppen (24), som flyttar isär de motliggande ultraljudenheterna (6, 14) efter svetsförloppets avslutande för att bringa deras sonotroder (12, 20) ur ingrepp med tvärsömmarna (2', 4') och som flyttar tillbaka de båda motliggande ultraljudenheterna (6, 14) anslutande till deras utgångsläge.1. o o o .o u u .o n ':: u u. PATENT CLAIM 1' AnAwAn-I i. rnivruuii ng for a hose bag machine for joining at least two material layers by means of ultrasonic welding with a first ultrasonic unit (6) arranged on one side of the material layers (2, 4) and a second ultrasonic unit (14) arranged on the opposite side of the material layers (2, 4), whose sonotrodes (12, 20) cooperate to carry out the welding process so that they start their ultrasonic energy simultaneously from opposite sides in the joint area of the material layers (2, 4) to be joined, in which the material layers to be joined consist of the transverse seams of a tubular body to be divided into containers, characterized by a transport device (28, 30) which moves the opposite ultrasonic units (6, 14) before the beginning of the welding process from an initial position towards each other, which linearly moves the opposite ultrasonic units (6, 14) during the welding process in common with the tubular body (24), which moves apart the opposite ultrasonic units (6, 14) after the welding process inclined to disengage their sonotrodes (12, 20) with the transverse seams (2 ', 4') and which move back the two opposite ultrasonic units (6, 14) adjacent to their initial position. 2. Anordning enligt patentkrav 1, kännetecknad av att sonotroderna (12, 20) i de båda motliggande ultraljudenheterna (6, 14) är så utformade att de inleder ultraljudenergi med lika stora och motsatt riktade svängningsamplituder i fogområdet.Device according to claim 1, characterized in that the sonotrodes (12, 20) in the two opposite ultrasonic units (6, 14) are designed such that they initiate ultrasonic energy with equal and opposite directional oscillation amplitudes in the joint area. 3. Anordning enligt ett av patentkraven 1-2, kännetecknad av att två eller flera par av motliggande ultraljudenheter (6, 14; 6', 14) är anordnade.Device according to one of Claims 1 to 2, characterized in that two or more pairs of opposite ultrasonic units (6, 14; 6 ', 14) are provided. 4. Anordning enligt ett av patentkraven 1-3, kännetecknad av att de båda motliggande ultraljudenheterna (6, 14) är anslutna till två generatorer som är styrbara oberoende av varandra.Device according to one of Claims 1 to 3, characterized in that the two opposite ultrasonic units (6, 14) are connected to two generators which can be controlled independently of one another. 5. Anordning enligt ett av patentkraven 1-3, kännetecknad av att de båda motliggande ultraljudenheterna (6, 14) är anslutna till en gemensam generator.Device according to one of Claims 1 to 3, characterized in that the two opposite ultrasonic units (6, 14) are connected to a common generator. 6. Anordning enligt patentkrav 4 eller 5, kännetecknad av att generatorn eller generatorerna är utbildade digitalt.Device according to Claim 4 or 5, characterized in that the generator or generators are digitally trained.
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DE8215958U1 (en) * 1982-06-02 1983-01-27 Fit Container AG, 7000 Chur DEVICE FOR RISING UP AND WELDING THE PRODUCTION OF FOLDING CARTONS OF SERVING CUTS
DE19536881C2 (en) * 1995-10-04 2001-09-27 Karl Widmann Schweismaschinen Machine for making insert sleeves

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SE0000459D0 (en) 2000-02-14
SE0000459L (en) 2000-08-19

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