FR2556647A1 - Appareil de soudage a sectionnement pour bandes de feuille en matiere plastique superposees - Google Patents

Appareil de soudage a sectionnement pour bandes de feuille en matiere plastique superposees Download PDF

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Publication number
FR2556647A1
FR2556647A1 FR8419183A FR8419183A FR2556647A1 FR 2556647 A1 FR2556647 A1 FR 2556647A1 FR 8419183 A FR8419183 A FR 8419183A FR 8419183 A FR8419183 A FR 8419183A FR 2556647 A1 FR2556647 A1 FR 2556647A1
Authority
FR
France
Prior art keywords
welding
sectioning
sheet
plastic sheet
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
FR8419183A
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English (en)
Inventor
Bernd Ramcke
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.)
ECH Will GmbH and Co
Original Assignee
ECH Will GmbH and Co
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 ECH Will GmbH and Co filed Critical ECH Will GmbH and Co
Publication of FR2556647A1 publication Critical patent/FR2556647A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7439—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for continuously and longitudinally welding and severing webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B29C65/7873—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains using cooperating conveyor belts or cooperating conveyor chains
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0046—Preventing sticking together, e.g. of some areas of the parts to be joined by the use of a lubricant, e.g. fluid, powder
    • 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
    • B29C66/005—Detaching the article from the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B29C66/81812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws the welding jaws being cooled from the outside, e.g. by blowing a gas or spraying a liquid
    • 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
    • B29C66/836—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
    • B29C66/849—Packaging 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8744—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down
    • B29C66/87443—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down by withdrawing the heating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding 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
    • B29C66/90—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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
    • B29C66/8244—Actuating mechanisms magnetically driven
    • 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
    • B29C66/8324—Joining or pressing tools pivoting around 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
    • B29C66/90—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
    • B29C66/9161—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 heat or the thermal flux, i.e. the heat flux

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

DANS UN APPAREIL DE SOUDAGE A SECTIONNEMENT POUR DEUX BANDES DE FEUILLE EN MATIERE PLASTIQUE SUPERPOSEES 2 DESTINEES A L'EMBALLAGE D'OBJETS ENTRE CES DERNIERES, IL EST PREVU UN OUTIL DE SOUDAGE TRANCHANT 8 QUI PRESENTE UNE ARETE ANTERIEURE 12 INCLINEE PAR RAPPORT AU PLAN DES BANDES 2 DE FEUILLE EN MATIERE PLASTIQUE. CETTE ARETE ANTERIEURE 12 EST AFFILEE DE TELLE MANIERE QU'IL SE FORME DEUX SURFACES DE SOUDAGE SYMETRIQUES, PERMETTANT AINSI D'OBTENIR LORS D'UN SEUL PROCESSUS DE COUPE SIMULTANEMENT DE PART ET D'AUTRE DE L'ARETE UN CORDON DE SOUDURE LONGITUDINAL. EN CAS D'ARRET DE LA MACHINE L'OUTIL DE SOUDAGE TRANCHANT 8 PEUT ETRE ECARTE DU PARCOURS DE LA FEUILLE PAR BASCULEMENT.

Description

Appareil de soudage à sectionnement pour bandes de feuille en matière
plastique superposées La présente invention concerne un appareil de soudage à sectionnement pour bandes de feuille en matière
plastique superposées destinées à l'emballage d'objets.
Dans des appareils de soudage a sectionnement connus de ce genre le transport des bandes de feuille en matière plastique en direction de l'outil de soudage 1) tranchant s'effectue le plus souvent entre des paires de courrcies sans fin. Celles-ci servent non seulement & amener les bandes de feuille mais en même temps à maintenir ce] les-ci afin d'obtenir un cordon de soudure uniforme et
exempt de plis.
1 Entre les courroies supérieures des paires de courroies sans fin est généralement monté l'outil de soudage tranchant qui est de manière connue réalisé sous les formes les plus diverses en tant que lame chauffée électriquement. Ainsi on connaît par exemple des lames 0 circulaires rotatives, des lames montées verticalement et
d'autres organes de soudage tranchants.
De tels appareils de soudage à sectionnement posent des problèmes dans la mesure o la feuille de matière plastique souple chauffée lors du processus de soudage par sectionnement adhère aux outils de soudage tranchants ou les part-ies des feuilles en matière plastique séparées zolleT & fnouveau au cordon de soudure encore chaud. On cocinnaet des appareils de refroidissement qui, afin de remédier à ces inconvénients, se chargent par exemple au 0 wioyen de supports de feuille refroidis par eau ou de courroies additionnelles de la dissipation de la chaleur dans le milieu environnant de façon à refroidir le cordon de soudure. Sont en outre connus des appareils dans les= quels il est communiqué aux organes de soudage tranchants, outre leur mouvement relatif par rapport à la bande de feuille en matière plastique, un mouvement oscillant. Ainsi les organes de soudage tranchants sont constamment animés
d'un mouvement évitant l'adhérence de la feuille.
Abstraction faite des complications techniques importantes que cela comporte, ces appareils ne permettent le plus souvent d'exécuter qu'un seul cordon de soudure longitudinal latéral suffisamment solide. Cela veut dire qu'ils ne conviennent pas pour un mode de travail à effet multiple dans lequel plusieurs rangées d'objets disposées parallèlement sont emballées simultanément dans des
feuilles de matière plastique par soudage de celles-ci.
En conséquence, la présente invention a pour but de créer un appareil de soudage à sectionnement qui, en évitant les inconvénients mentionnés, permette un mode de
travail à effet multiple.
Selon l'invention ce but est atteint par le fait
que l'outil de soudage tranchant présente une arete anté-
rieure affilée, inclinée par rapport au plan des bandes de feuille en matière synthétique et qui forme deux surfaces de soudage symétriques et qu'il peut être écarté du plan
des bandes de feuille par basculement.
A cet égard l'outil de soudage tranchant est écar-
té, en le faisant basculer vers l'extérieur, selon l'in-
vention au moyen d'un mécanisme de commande pneumatique mais il peut également s'agir d'une commande de type
mécanique ou électromécanique.
Pour le chauffage de l'outil de soudage tranchant est prévue une cartouche chauffante. Le réglage s'effectue
au moyen d'un capteur de température. Pour ces deux dispo-
sitifs sont prévus selon l'invention, dans l'outil de sou-
dage tranchant, des logements récepteurs correspondants.
Les courroies sans fin pour le transport des feuil-
les sont réalisées en tant que courroies crantées afin
d'obtenir l'absence de glissement prévue selon l'invention.
Une autre caractéristique de l'invention consiste
-2556647
en ce que pour le refroidissement du cordon de soudure des feuilles ainsi que pour le refroidissement du guide des courroies et pour éviter que la feuille soudée par sectionnement ne colle à sa contrepartie il est prévu de l'air soufflé. Le fait que l'outil de soudage tranchant soit réalisé de façon à présenter deux surfaces de soudage permet de réaliser simultanément deux cordons de soudure longitudinaux de sorte que le mode de fonctionnement de
l'appareil est à effet multiple.
Du fait que l'outil de soudage tranchant peut être écarté en cas d'arrêt de la machine un collage éventuel de la feuille en matière plastique à cet outil ainsi qu'une pénétration ou une dissipation de la feuille par fusion au niveau de l'outil de soudage tranchant sont évités à coup sur. L'utilisation de courroies crantées en tant qu'organes transporteurs pour les bandes de feuille en matière plastique permet à celles-ci d'être amenées sans
glissement et donc sans plis.
Au moyen de l'air soufflé amené en aval de l'outil
de soudage tranchant la feuille déjà soudée par sectionne-
ment est empêchée de coller & sa contrepartie. En même temps le guide de courroie et la feuille sont refroidis par
cet air soufflé.
L'invention est expliquée plus en détail ci-dessous à l'aide d'un exemple de réalisation illustré aux dessins annexés sur lesquels: la figure 1 représente de manière simplifiée, en vue latérale, l'appareil de soudage à sectionnement selon l'invention; la figure 2 représente, de manière agrandie par rapport à la figure 1, l'outil de soudage tranchant observé dans le sens de la flèche x de la figure 1; et la figure 3 représente l'outil de soudage tranchant
observé dans le sens de la flèche y de la figure 1.
Au moyen de paires de courroies sans fin réalisées en tant que courroies crantées et dont sur la figure 1 n'est représentée qu'une courroie supérieure 1 les deux bandes de feuille en matière plastique, dont il n'est également indiqué, en trait mixte, que la bande de feuille supérieure 2, sont amenées dans le sens de la flèche A. La courroie 1 circulant sur des poulies 3, 4 et un tendeur 6 glisse dans la zone de passage des feuilles dans un guide 7. La seconde courroie supérieure, non visible sur la figure 1, montée parallèlement & la courroie 1 circule
de la même façon que cette dernière.
Entre les deux courroies supérieures 1 est monté un outil de soudage tranchant chauffé 8 qui dans la position de travail est placé sur le parcours des feuilles et peut dans le cas d'un arrêt de la machine être écarté au moyen d'un mécanisme de commande pneumatique 9 qui lui permet de
basculer autour de l'axe 11.
L'outil de soudage tranchant 8 présente une arête antérieure 12 inclinée par rapport au plan des bandes 2 de
feuille en matière plastique. Cette arête antérieure incli-
née 12 est affilée sur toute sa longueur de façon à former deux surfaces de soudage symétriques 13, 14 (figures 2 et 3) de sorte qu'il est possible de réaliser simultanément au cours d'un seul processus de coupe deux cordons de soudure longitudinaux. Ceci permet un mode de fonctionnement dit à
effet multiple de l'appareil.
Pour chauffer l'outil de soudage tranchant 8 il est prévu une cartouche chauffante (non représentée) qui est placée dans un logement récepteur 16 prévu dans l'outil de soudage tranchant 8. Au-dessus du logement récepteur 16 se trouve un autre logement récepteur 17 pour un capteur de température non représenté. En un endroit situé dans le sens de transport des feuilles à la suite de l'outil de soudage tranchant 8 sont prévues des buses à air soufflé 18 qui servent au refroidissement des cordons de soudure des feuilles ainsi qu'au refroidissement du guide de courroie 7 et empêchent la feuille soudée par sectionnement de coller
à sa contrepartie.

Claims (4)

REVENDICATIONS
1 - Appareil de soudage à sectionnement pour deux bandes de feuille en matière plastique superposées destinées à l'emballage d'objets entre ces dernières, dans lequel sont prévues pour l'amenée des bandes de feuille en matière plastique des paires de courroies sans fin entre lesquelles est monté un outil de soudage tranchant chauffé, caractérisé en ce que l'outil de soudage tranchant (8) présente une arête antérieure affilée (12) inclinée par rapport au plan des bandes de feuille (2) en matière plastique et qui forme deux surfaces de soudage symétriques (13, 14) et en ce qu'il peut être écarté du plan des bandes
de feuille par basculement.
2 - Appareil de soudage à sectionnement selon la revendication 1, caractérisé en ce que pour permettre à
l'outil (8) de soudage tranchant d'être écarté par bascule-
ment est prévu un mécanisme de commande pneumatique (9).
3 - Appareil de soudage à sectionnement selon la revendication 1 ou 2, caractérisé en ce que l'outil de soudage tranchant (8) est muni d'une cartouche chauffante et d'un capteur de température et présente pour ceuxci
respectivement un logement récepteur approprié (16; 17).
4 - Appareil de soudage à sectionnement selon la revendication 1, caractérisé par des courroies sans fin (1)
réalisées sous la forme de courroies crantées afin d'obte-
nir un transport des feuilles sans glissement.
- Appareil de soudage a sectionnement selon l'une
quelconque des revendications précédentes, caractérisé en
ce que pour le refroidissement du cordon de soudure des feuilles ainsi que pour le refroidissement du guide 7 de courroie et afin d'éviter que la feuille soudée par sectionnement ne colle à sa contrepartie il est prévu de
l'air soufflé.
FR8419183A 1983-12-17 1984-12-14 Appareil de soudage a sectionnement pour bandes de feuille en matiere plastique superposees Pending FR2556647A1 (fr)

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Application Number Priority Date Filing Date Title
DE3345753 1983-12-17

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FR2556647A1 true FR2556647A1 (fr) 1985-06-21

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ID=6217273

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BE (1) BE901231A (fr)
FR (1) FR2556647A1 (fr)
GB (1) GB2151181B (fr)
IT (1) IT1177229B (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8651162B2 (en) * 2011-08-01 2014-02-18 Shanklin Corporation Hinged tubular heater for side sealing machine
US20130303353A1 (en) * 2012-05-14 2013-11-14 Sealed Air Corporation (Us) Thin Sealing Device For Side Sealing Machine
WO2013172989A1 (fr) * 2012-05-14 2013-11-21 Sealed Air Corporation (Us) Dispositif d'étanchéité mince destiné à une machine d'étanchéité latérale

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US2781079A (en) * 1953-11-17 1957-02-12 Du Pont Sealing apparatus
US3068935A (en) * 1960-09-26 1962-12-18 Nat Distillers Chem Corp Web slitter and edge sealing apparatus
GB954700A (en) * 1959-10-13 1964-04-08 Jozsef Ferenczi Improvements in or relating to the manufacture of tubes and hoses from thermoplasticmaterial
FR1383850A (fr) * 1962-10-08 1965-01-04 Nat Distillers Chem Corp Refendeuse-soudeuse rotative de tubes en matière thermoplastique
FR1479851A (fr) * 1965-05-15 1967-05-05 Dispositif de coupage-soudage de feuilles de matière thermoplastique
US3368930A (en) * 1964-10-16 1968-02-13 Phillips Petroleum Co Method and apparatus for forming tubes of thermoplastic film
AU410745B2 (en) * 1964-12-08 1971-02-24 Weldotron Corporation Film sealing and cutting apparatus and method
DE2048296A1 (de) * 1969-10-09 1971-04-22 Lagain G Verfahren und Vorrichtung zum Schnei den und Schweißen einer Umhüllung aus ther moplastischem Material
GB1248849A (en) * 1968-10-12 1971-10-06 Mitsubishi Petrochemical Co Method of sealing polyethylene films
GB1300434A (en) * 1970-06-03 1972-12-20 Percy Sheard Method of and apparatus for longitudinally cutting webs of thermoplastic synthetic plastics material
FR2326277A1 (fr) * 1975-10-04 1977-04-29 Stiegler Maschf Felix Dispositif pour la separation et le soudage en direction longitudinale d'au moins deux couches de feuilles thermoplastiques
US4318768A (en) * 1980-02-04 1982-03-09 Johnson James R Slit-sealing apparatus for high-density plastic sheets

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GB1031059A (en) * 1964-01-12 1966-05-25 Bell Engineering Slough Ltd Package sealing machine
GB1301847A (fr) * 1969-09-08 1973-01-04
GB1301846A (fr) * 1969-09-08 1973-01-04

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781079A (en) * 1953-11-17 1957-02-12 Du Pont Sealing apparatus
GB954700A (en) * 1959-10-13 1964-04-08 Jozsef Ferenczi Improvements in or relating to the manufacture of tubes and hoses from thermoplasticmaterial
US3068935A (en) * 1960-09-26 1962-12-18 Nat Distillers Chem Corp Web slitter and edge sealing apparatus
FR1383850A (fr) * 1962-10-08 1965-01-04 Nat Distillers Chem Corp Refendeuse-soudeuse rotative de tubes en matière thermoplastique
US3368930A (en) * 1964-10-16 1968-02-13 Phillips Petroleum Co Method and apparatus for forming tubes of thermoplastic film
AU410745B2 (en) * 1964-12-08 1971-02-24 Weldotron Corporation Film sealing and cutting apparatus and method
FR1479851A (fr) * 1965-05-15 1967-05-05 Dispositif de coupage-soudage de feuilles de matière thermoplastique
GB1248849A (en) * 1968-10-12 1971-10-06 Mitsubishi Petrochemical Co Method of sealing polyethylene films
DE2048296A1 (de) * 1969-10-09 1971-04-22 Lagain G Verfahren und Vorrichtung zum Schnei den und Schweißen einer Umhüllung aus ther moplastischem Material
GB1300434A (en) * 1970-06-03 1972-12-20 Percy Sheard Method of and apparatus for longitudinally cutting webs of thermoplastic synthetic plastics material
FR2326277A1 (fr) * 1975-10-04 1977-04-29 Stiegler Maschf Felix Dispositif pour la separation et le soudage en direction longitudinale d'au moins deux couches de feuilles thermoplastiques
US4318768A (en) * 1980-02-04 1982-03-09 Johnson James R Slit-sealing apparatus for high-density plastic sheets

Also Published As

Publication number Publication date
GB2151181B (en) 1987-03-04
GB2151181A (en) 1985-07-17
GB8431809D0 (en) 1985-01-30
BE901231A (fr) 1985-03-29
IT8423616A1 (it) 1986-05-16
IT1177229B (it) 1987-08-26
IT8423616A0 (it) 1984-11-16

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