DE102005034284A1 - Bonding device for thermoplastics, especially foil strips, has a sealing surface on a jaw unit and a heating device to heat up the sealing surface - Google Patents

Bonding device for thermoplastics, especially foil strips, has a sealing surface on a jaw unit and a heating device to heat up the sealing surface Download PDF

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Publication number
DE102005034284A1
DE102005034284A1 DE200510034284 DE102005034284A DE102005034284A1 DE 102005034284 A1 DE102005034284 A1 DE 102005034284A1 DE 200510034284 DE200510034284 DE 200510034284 DE 102005034284 A DE102005034284 A DE 102005034284A DE 102005034284 A1 DE102005034284 A1 DE 102005034284A1
Authority
DE
Germany
Prior art keywords
sealing
sealing surface
jaw
heating device
heating
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.)
Withdrawn
Application number
DE200510034284
Other languages
German (de)
Inventor
Alexander Epp
Walter Dr. Baur
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.)
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
Original Assignee
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
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 Rovema Verpackungsmaschinen GmbH and Co KG, Rovema GmbH filed Critical Rovema Verpackungsmaschinen GmbH and Co KG
Priority to DE200510034284 priority Critical patent/DE102005034284A1/en
Publication of DE102005034284A1 publication Critical patent/DE102005034284A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only 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
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—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
    • B29C65/745—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 a single unit having both a severing tool and a welding tool
    • B29C65/7451—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 a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/40—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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—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
    • B29C66/849—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
    • B29C66/90—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
    • B29C66/90—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
    • B29C66/91421—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 of the joining 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
    • B29C66/004—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
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B2051/105—Heat seal temperature control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A straight concave/convex sealing surface (5) fits on a jaw unit (1). A heating device (6) heats up the sealing surface so as to be able to melt open plastic in heat contact with the sealing surface and to bond the plastic. Set in the jaw unit and designed as a heating device capable of being permanently heated, an insert (10) has a sealing surface on it in a sealing position.

Description

Der Anmeldegegenstand betrifft den Verpackungsmaschinenbau und dort eine Vorrichtung zum Verschweißen von thermoplastischem Kunststoff, insbesondere einer Folienbahn, welche einen derartigen; schweißfähigen Kunststoff aufweist.Of the The subject of the application relates to packaging machine construction and there a device for welding of thermoplastic material, in particular a film web, which one such; weldable plastic having.

Um eine Folienbahn zum Zwecke einer Erzeugung von Beuteln zu verschweißen, ist es bekannt, die Folienbahn umzuformen und mittels gegeneinander bewegbarer Backenkörper oder mittels eines einzigen, gegen einen Widerstand wirkenden Backenkörpers zu verschweißen. Derartige Backenkörper werden bei vertikalen und horizontalen Schlauchbeutelmaschinen zur Beutelerzeugung oder zum Anschweißen einer neuen Folienbahn an eine nahezu aufgebrauchte Folienbahn (sogenannter Splicer) eingesetzt.Around To weld a film web for the purpose of creating bags is it is known to reshape the film web and by means of against each other movable cheek body or by means of a single jaw body acting against a resistance weld. Such cheeks body are used in vertical and horizontal tubular bag machines Bag production or for welding a new film web used to a nearly exhausted film web (so-called splicer).

Die bekannten Vorrichtungen weisen einen Backenkörper auf, mindestens eine Siegelfläche am Backenkörper und eine Heizeinrichtung zum Erwärmen der Siegelfläche bzw. der Siegelflächen, um den in Wärmekontakt mit der Siegelfläche befindlichen Kunststoff aufschmelzen und verschweißen zu können. Des weiteren ist aus der DE 100 05 020 A1 ein beheizbarer Einsatz zum Einsetzen in den Backenkörper bekannt, wobei am Einsatz die Siegelfläche in einer Siegelposition vorgesehen ist. Die Verschweißung des Kunststoffes wird hierbei durch den erwärmten Einsatz ausgeführt, wenn der Backenkörper gegen den Kunststoff gesetzt ist.The known devices have a jaw body, at least one sealing surface on the jaw body and a heating device for heating the sealing surface or the sealing surfaces in order to be able to melt and weld the plastic in thermal contact with the sealing surface. Furthermore, from the DE 100 05 020 A1 a heatable insert known for insertion into the jaw body, wherein the insert surface is provided in a sealing position on the insert. The welding of the plastic is carried out here by the heated insert when the jaw body is set against the plastic.

Die bekannte Vorrichtung hat den Nachteil, dass sie ein Heißsiegelband aufweist, welches als Widerstandsheizelement dient, und welches sich in der Praxis nur für Impulsschweißverfahren eignet, wobei jeweils ein Stromimpuls für einen Schweißvorgang genutzt wird. Zwar ist die Erzeugung der Schweißwärme an exponierter Stelle des Backenkörpers insofern von Vorteil, als die Schweißwärme direkt und damit sehr schnell in der Siegelfläche erzeugt wird, die bekannte Vorrichtung lässt sich jedoch bezüglich einer auf der Siegelfläche einzustellenden Temperatur nur sehr schwer regeln.The known device has the disadvantage that it is a heat sealing band which serves as a resistance heating element, and which in practice only for Pulse welding process suitable, wherein in each case a current pulse for a welding operation is being used. Although the generation of welding heat is at the exposed point of the Back body insofar advantageous as the welding heat directly and thus very fast in the sealed area is generated, the known device can be but with respect to a on the sealing surface very difficult to regulate the temperature to be set.

Alternativ zu den Heißsiegelbändern sind dauerbeheizbare Heizeinrichtungen bekannt, die in Bohrungen von Backenkörpern eingesetzt sind, und die über ebenfalls in den Backenkörpern eingesetzte Temperaturfühler und Regeleinrichtungen unabhängig von den ausgeführten Schweißvorgängen beheizt werden. Eine derartige Heizeinrichtung wird abwechselnd immer wieder an- und ausgeschaltet, um im Bereich des Temperaturfühlers stets eine Temperatur zu haben, die zwischen einem Minimalwert und einem Maximalwert liegt. Dabei schwankt die Temperatur der Siegelfläche entsprechend. Die dauerbeheizbaren Heizeinrichtungen, die in Bohrungen von Backenkörpern eingesteckt sind, haben den Nachteil, dass sie aufgrund ihrer relativ großen Entfernung zur Siegelfläche große Temperaturschwankungen an der Siegelfläche verursachen.alternative to the heat sealing tapes are permanently heatable Heating devices known, which are used in bores of jaws are, and the over also in the cheeks used temperature sensors and control devices independently from the executed Welding processes heated become. Such a heater is alternately over again switched on and off, always in the range of the temperature sensor to have a temperature between a minimum value and a maximum value lies. The temperature of the sealing surface varies accordingly. The permanently heatable heating devices, which are inserted in bores of jaw bodies They have the disadvantage that they are due to their relatively large distance to the sealing surface size Cause temperature fluctuations on the sealing surface.

Es liegt die Aufgabe zugrunde, eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass die Wärmeerzeugung sehr nahe an der Siegelfläche erzeugt wird, und dass die Temperatur der Siegelfläche einfach zu regeln ist.It the object is based, a device according to the preamble of the claim 1 such that the heat generation very close to the sealing surface is generated, and that the temperature of the sealing surface easy is to regulate.

Gelöst ist die Aufgabe gemäß dem kennzeichnenden Teil des Anspruchs 1. Danach ist der Einsatz, der die Siegelfläche aufweist, als dauerbeheizbare Heizeinrichtung ausgestaltet.Solved is the Task according to the characterizing Part of claim 1. Thereafter, the insert having the sealing surface, configured as a permanently heatable heating device.

Die vorgeschlagene Neuerung hat den Vorteil, dass eine dauerbeheizbare Heizeinrichtung genutzt wird, die in einfacher, bisher bekannter Art regelbar ist. Dabei kann ein Temperaturfühler in die Heizeinrichtung integriert werden oder in unmittelbarer Nähe der Heizeinrichtung in den Backenkörper gesteckt werden. Als Heizeinrichtung eignet sich in kostengünstiger Weise eine herkömmliche dauerbeheizbare Heizeinrichtung. Da die Heizeinrichtung die Siegelfläche ausbildet, d. h. dass die Heizeinrichtung als Siegelelement dient, wird nach einem Einschalten einer in der Heizeinrichtung integrierten Widerstandsheizung die Siegelfläche sehr schnell erwärmt. Ebenso wird nach einem Abschalten der Widerstandsheizung die Siegelfläche unverzüglich nicht mehr erwärmt. Es wird somit dauerhaft eine relativ gleichmäßige Temperatur auf der Siegelfläche erreicht. Schweißvorgänge sind derart genauer und damit auch schneller ausführbar. Um dem Schweißdruck zu widerstehen, muss die Heizeinrichtung genügend stabil ausgebildet sein.The proposed innovation has the advantage that a Dauerbeheizbare Heating device is used, in a simpler, previously known Art is adjustable. In this case, a temperature sensor in the heater be integrated or in the immediate vicinity of the heater in the Bolt body plugged become. As a heater is suitable in cost Way a conventional permanently heated heating device. Since the heater forms the sealing surface, d. H. that the heater serves as a sealing element, is after switching on a built-in heater in the resistance heating the sealing surface warmed up very quickly. As well If the resistance heating is switched off, the sealing surface no longer becomes instantaneously heated. It is thus permanently achieved a relatively uniform temperature on the sealing surface. Welding operations are more accurate and thus faster executable. To the welding pressure too Resist, the heater must be sufficiently stable.

Weitere, vorteilhafte Ausgestaltungen der vorgeschlagenen Neuerung sind in den Ansprüchen 2 bis 8 beschrieben.Further, advantageous embodiments of the proposed innovation are in to the claims 2 to 8 described.

Da die Heizeinrichtung die Siegelfläche bildet, ist die Wärmeübertragung von der Heizeinrichtung hin zur Siegelfläche besonders effektiv, da zu dieser hin nur ein kurzer Weg für die Wärmeleitung vorgesehen ist. Zudem werden Wärmeübergänge an Grenzschichten zweier Materialien vermieden. Dabei kann die Heizeinrichtung in kostengünstiger Weise in Form einer Heizpatrone ausgeführt sein (Anspruch 4). Ein äußerer Mantel der Heizeinrichtung kann gewölbt oder gerade sein. Dabei kann eine gerade Mantelfläche der Heizeinrichtung zum Ausbilden einer geraden Siegelfläche genutzt werden (Anspruch 2) und eine gekrümmte Mantelfläche für eine konkav oder konvex gewölbte Siegelfläche (Anspruch 3). Eine gewölbte, herkömmliche und dadurch kostengünstige Heizeinrichtung erfordert einen dazu passenden, konvex bzw. konkav ausgeformten Widerstand gegen den die Siegelfläche gesetzt wird.Since the heating device forms the sealing surface, the heat transfer from the heating device to the sealing surface is particularly effective since only a short path for the heat conduction is provided for this purpose. In addition, heat transfer at boundary layers of two materials are avoided. In this case, the heater can be designed in a cost effective manner in the form of a heating cartridge (claim 4). An outer jacket of the heater may be curved or straight. In this case, a straight lateral surface of the heating device can be used to form a straight sealing surface (claim 2) and a curved lateral surface for a concave or convexly curved sealing surface (claim 3). A domed, conventional and thus inexpensive heating device requires a matching, convex or concave resistance against which the sealing surface is set.

Es kommt vor, dass nach Durchführung eines Verpackungsvorganges, bei welchem eine Mehrschichtfolie (Laminatfolie) zu verschweißen war, eine Monofolie, z. B. aus Polyethylen verscheißt werden soll. Während für die Mehrschichtfolie eine unbeschichtete Siegelfläche, die eine gute Wärmeübertragung in eine äußere Kunststoffschicht, z. B. Polypropylen, erreicht, ideal ist, muss eine Monofolie, da eine dauerbeheizte Siegelfläche vorgesehen ist, mit einer Siegelfläche verschweißt werden, auf welcher eine Antihaftbeschichtung angebracht ist, um ein Anhaften des aufgeschmolzenen Kunststoffes an der Siegelfläche zu vermeiden.It happens after that a packaging process in which a multilayer film (laminate film) to weld was a monofilm, z. B. should be verschscheißt from polyethylene. While for the Multilayer film has an uncoated sealing surface, which provides good heat transfer in an outer plastic layer, z. B. Polypropylene, achieved, is ideal, a monofilm, since a permanently heated sealing surface is intended to be welded to a sealing surface, on which a non-stick coating is applied to stick to avoid the melted plastic on the sealing surface.

Entsprechend wird eine unbeschichtete oder eine beschichtete Heizeinrichtung, insbesondere Heizpatrone eingesetzt.Corresponding becomes an uncoated or a coated heater, used in particular heating cartridge.

Der Einsatz kann einstückig oder zweistückig in einer Quersiegelbacke einer vertikalen Schlauchbeutelmaschine vorgesehen werden, wobei zwischen zwei parallel zueinander ausgerichteten, in der Siegelposition befindlichen Siegelflächen eine auslenkbare Trenneinrichtung zum Durchtrennen einer Folienbahn vorgesehen ist (Anspruch 5). Ist der Einsatz gemäß Anspruch 6 in einstückiger Weise ausgeführt, so weist er dabei zwei parallel zueinander ausgerichtete Siegelflächen in der Siegelposition auf. Ein gleichmäßiger Siegeldruck wird erreicht, wenn eine Quersiegelbacke gemäß Anspruch 7 zwei konkav gewölbte Siegelflächen aufweist, und eine gegen diese Quersiegelbacke bewegbare, zweite Quersiegelbacke zwei konvex gewölbte Siegelflächen hat.Of the Insert can be made in one piece or two-piece in a transverse sealing jaw of a vertical flow-wrapping machine be provided, wherein between two parallel aligned, in the sealing position sealing surfaces a deflectable separator is provided for severing a film web is (claim 5). is the use according to claim 6 in one piece Way, He has two parallel aligned sealing surfaces in the sealing position. A uniform sealing pressure is achieved when a transverse sealing jaw according to claim 7 two concave domed sealing surfaces has, and a movable against this cross-sealing jaw, second transverse sealing jaw two convex vaulted sealing surfaces Has.

Die Vorrichtung ist auch als Längssiegelbacke einer vertikalen Schlauchbeutelmaschine, als Splicer (Anspruch 8) oder als Schweißbacke einer horizontalen Beutelmaschine geeignet.The Device is also as longitudinal sealing jaw a vertical tubular bag machine, as a splicer (claim 8) or as a welding jaw a horizontal bag machine suitable.

Im folgenden wird die vorgeschlagene Neuerung an Hand Ausführungsbeispiele darstellender Figuren näher beschrieben. Es zeigt:in the Following is the proposed innovation on hand embodiments illustrative figures closer described. It shows:

1 in einer Seitenansicht eine vertikale Schlauchbeutelmaschine, die einen Splicer, eine Längssiegelbacke und Quersiegelbacken mit jeweils mindestens einem Einsatz aufweist, der eine Siegelfläche hat, und der als dauerbeheizbare Heizeinrichtung ausgestaltet ist. 1 in a side view of a vertical bagging machine, which has a splicer, a longitudinal sealing jaw and transverse sealing jaws, each with at least one insert, which has a sealing surface, and which is configured as a permanently heatable heating device.

2 in einer Schnittdarstellung die Quersiegelbacken der 1 beim Anlegen an einen Folienschlauch, wobei jeweils zwei konvex gekrümmte Siegelflächen der einen Quersiegelbacke gegen zwei konkav gekrümmte Siegelflächen der anderen Siegelbacke gesetzt werden; 2 in a sectional view of the transverse sealing jaws of 1 when applying to a film tube, in each case two convexly curved sealing surfaces of a transverse sealing jaw are set against two concave curved sealing surfaces of the other sealing jaw;

3 in einer Schnittdarstellung eine Längssiegelbacke analog der in 1 dargestellten, jedoch beim Verschweißen eines aus einer Monofolie gebildeten Folienschlauches, und mit einer Antihaftbeschichtung auf der Siegelfläche des dauerbeheizten Einsatzes; 3 in a sectional view of a longitudinal sealing jaw analogous to in 1 shown, however, when welding a film tube formed from a monofilm, and with a non-stick coating on the sealing surface of the permanently heated insert;

4 in einer Schnittdarstellung einen Splicer analog dem in 1 dargestellten, jedoch mit einer beschichteten äußeren, in einer Siegelposition befindlichen Siegelfläche; 4 in a sectional view a splicer analogous to the in 1 illustrated, but with a coated outer, in a sealing position sealing surface;

5 in einer Seitenansicht die beiden Siegelflächen einer Quersiegelbacke, in welche ein dauerbeheizbarer, wendbarer, einstückig ausgebildeter Einsatz eingesteckt ist, der zum Erzeugen jeweils einer Kopfnaht eines Schlauchbeutels und einer Bodennaht eines nachfolgenden Schlauchbeutels vorgesehen ist, sowie 5 in a side view, the two sealing surfaces of a transverse sealing jaw, in which a durably heatable, reversible, integrally formed insert is inserted, which is provided for generating each a top seam of a tubular bag and a bottom seam of a subsequent tubular bag, and

6 in einer um 90 Grad relativ zur Ansicht der 5 versetzten Seitenansicht den Einsatz der Quersiegelbacke der 5. 6 in a 90 degrees relative to the view of the 5 offset side view the use of the transverse sealing jaw the 5 ,

Bei einer vertikalen Schlauchbeutelmaschine 3 wird eine aus zwei Lagen aufgebaute Folienbahn 14 mittels eines Folienabzugs 15 von einer Vorratsrolle 16 abgerollt und über eine Formschulter 17 gezogen (1). Die Folienbahn 14 wird dabei zu einem Folienschlauch 7 umgeformt, der ein vertikal ausgerichtetes Füllrohr 20 umgibt, durch welches das untere Ende des Folienschlauches 7 befüllt werden kann. Der Folienschlauch 7 wird mittels einer gegen das Füllrohr 20 wirkenden Längssiegelbacke 18 parallel zur Folientransportrichtung 19 unter Erzeugung einer Längsnaht 4 verschweißt. Zwei gegeneinander bewegbare, den Folienschlauch 7 zwischen ihren Siegelflächen 5 einklemmende Quersiegelbacken 2 (2) dienen der Erzeugung von Quernähten 13. Jeweils zwei Quernähte 13 werden gleichzeitig erzeugt und bilden die Kopfnaht eines Schlauchbeutels 12 und die Bodennaht eines nachfolgenden Schlauchbeutels 12. Eine Trenneinrichtung 11 dient zum Abtrennen jeweils eines befüllten und verschlossenen Schlauchbeutels 12 vom Folienschlauch 7. Ein Splicer 21 ist dazu vorgesehen, nach einem Verbrauch der gesamten Vorratsrolle 16 eine neue Folienbahn 14 einer neuen Vorratsrolle 16 an das Ende der vorherigen Folienbahn 14 anzuschweißen.For a vertical bagger 3 becomes a film web made up of two layers 14 by means of a film take-off 15 from a supply roll 16 unrolled and over a form shoulder 17 drawn ( 1 ). The foil web 14 becomes a film tube 7 reshaped, which is a vertically aligned filling tube 20 surrounds, through which the lower end of the film tube 7 can be filled. The film tube 7 is by means of a against the filling tube 20 acting longitudinal sealing jaw 18 parallel to the film transport direction 19 creating a longitudinal seam 4 welded. Two mutually movable, the film tube 7 between their sealed surfaces 5 clamping cross-sealing jaws 2 ( 2 ) serve for the production of transverse seams 13 , Two transverse seams each 13 are generated simultaneously and form the top seam of a tubular bag 12 and the bottom seam of a subsequent tubular bag 12 , A separator 11 serves to separate each one filled and sealed tubular bag 12 from the film tube 7 , A splicer 21 is intended after consumption of the entire supply roll 16 a new film web 14 a new supply roll 16 at the end of the previous film web 14 to weld.

Insgesamt sind vier Vorrichtungen zum Verschweißen der Folienbahn 14 vorgesehen. Es sind der Splicer 21, die Längssiegelbacke 18 und die beiden Quersiegelbacken 2. Jede Vorrichtung zum Verschweißen weist einen Backenkörper 1 auf. Während am Splicer 21 und an der Längssiegelbacke 18 jeweils eine in einer Siegelposition befindliche Siegelfläche 5 vorgesehen ist, sind pro Quersiegelbacke 2 je zwei Siegelflächen 5 in der Siegelposition. Jede Vorrichtung zum Verschweißen ist mit mindestens einer Heizeinrichtung 6 zum Erwärmen einer Siegelfläche 5 ausgestattet um den Kunststoff der Folienbahn 14 aufschmelzen und verschweißen zu können. Jede Siegelfläche 5 befindet sich an einem Einsatz 10, der in den entsprechenden Backenkörper 1 eingesteckt ist. Als Einsatz 10 ist jeweils eine dauerbeheizte, geregelte Heizpatrone als Heizeinrichtung 6 vorgesehen. Dabei bildet die Heizeinrichtung 6 selbst die Siegelfläche 5.In total there are four devices for welding the film web 14 intended. It's the splicer 21 , the longitudinal sealing jaw 18 and the two transverse sealing jaws 2 , Each device for welding has a cheek body 1 on. While at the splicer 21 and on the longitudinal sealing jaw 18 each one in a sealing position seal surface 5 is provided, are per transverse sealing jaw 2 two sealing surfaces each 5 in the sealing position. Each device for welding is with at least one heater 6 for heating a sealing surface 5 equipped with the plastic of the film web 14 melt and weld. Every sealed area 5 is at a mission 10 in the corresponding cheek body 1 is plugged in. As an insert 10 is in each case a permanently heated, regulated heating element as a heating device 6 intended. In this case, the heating device forms 6 even the sealing surface 5 ,

Bei den Quersiegelbacken 2 (2) sind die Heizeinrichtungen 6 gekrümmt und weisen somit einerseits konvex und andererseits konkav gewölbte Siegelflächen 5 auf, die geometrisch aufeinander angepasst sind, um Quernähte 13 zu erzeugen. Infolge der direkt als Siegelflächen 5 genutzten, geometrisch modifizierten Heizpatronen wird die elektrisch erzeugte Wärme direkt an die Siegelflächen 5 abgegeben. Die Regelung jeweils einer Heizeinrichtung 6 erfolgt über eine Temperaturmessung mittels eines (nicht dargestellten) Messfühlers, der sich in oder direkt neben der Heizpatrone in der entsprechenden Quersiegelbacke 2 befindet. Zwischen zwei der parallel zueinander ausgerichteten, in der Siegelposition befindlichen Siegelflächen 5 ist eine auslenkbare Trenneinrichtung 11 zum Durchtrennen einer Folienbahn 14 bei geschlossenen Querbacken 2 vorgesehen.For the transverse sealing jaws 2 ( 2 ) are the heaters 6 curved and thus have on the one hand convex and on the other hand concave curved sealing surfaces 5 on, which are geometrically adapted to each other to cross seams 13 to create. As a result of directly as sealing surfaces 5 used, geometrically modified heating cartridges, the electrically generated heat directly to the sealing surfaces 5 issued. The regulation of a heating device 6 takes place via a temperature measurement by means of a (not shown) sensor, which is located in or next to the heating cartridge in the corresponding transverse sealing jaw 2 located. Between two of the sealing faces, which are aligned parallel to each other and located in the sealing position 5 is a deflectable separator 11 for cutting through a film web 14 with closed transverse jaws 2 intended.

Beim Ausführungsbeispiel der 3 ist sowohl eine Siegelfläche 5 eines mittels Einklemmung gehaltenen Einsatzes 10 einer Längssiegelbacke 18 als auch eine weitere Siegelfläche 8 mit einer Antihaftbeschichtung 22, die Polytetraflourethylen enthält, versehen. Insofern können beide Siegelflächen 5, 8 zum Verschweißen von Polyethylenmonofolie genutzt werden. Ist die Antihaftbeschichtung 22 der Siegelfläche 5 nach längerer Nutzungsdauer abgenutzt, so kann ohne Backenwechsel nach Lösen der Klemmeinrichtung 23 der Einsatz 10 gewendet werden, um die Siegelfläche 8, die eine unverbrauchte Antihaftbeschichtung 22 hat, in die Siegelposition zu bringen. Die Siegelfläche 8 könnte jedoch auch unbeschichtet sein, um die Längssiegelbacke 18 wahlweise für Verbundfolien zu nutzen, bei welchen keine Antihaftbeschichtung 22 notwendig ist. Zwar können Verbundfolien auch mittels Antihaftbeschichtungen 22 verschweißt werden, dies wäre jedoch unwirtschaftlich, da diese Beschichtungen stets nur eine bestimmte Nutzungsdauer haben, und eine Neubeschichtung einen zusätzlichen Aufwand mit sich bringt. Beide Siegelflächen 5 sind gerade und sind Außenflächen eines Mantels einer dauerbeheizbaren Heizpatrone, die als Heizeinrichtung 6 dient.In the embodiment of 3 is both a sealed area 5 a held by Einklemmung use 10 a longitudinal sealing jaw 18 as well as another seal surface 8th with a non-stick coating 22 provided with polytetrafluoroethylene. In this respect, both sealing surfaces 5 . 8th used for welding polyethylene monofilm. Is the non-stick coating 22 the sealing surface 5 worn out after a long period of use, so can without jaw change after loosening the clamping device 23 the use 10 be turned around the sealing surface 8th containing an unused non-stick coating 22 has to bring to the sealing position. The sealing surface 8th However, it could also be uncoated to the longitudinal sealing jaw 18 optional for composite films where no non-stick coating is used 22 necessary is. Although composite films can also be made using non-stick coatings 22 However, this would be uneconomical, since these coatings always have a certain useful life, and a re-coating brings with it an additional effort. Both sealing surfaces 5 are straight and are exterior surfaces of a jacket of a permanently heated immersion heater, which serves as a heating device 6 serves.

Beim Ausführungsbeispiel der 4 weist eine Siegelfläche 5 einer dauerbeheizbaren Heizeinrichtung 6, die als wendbarer Einsatz 10 ausgeführt ist, eine Antihaftbeschichtung 22 auf und eine weitere Siegelfläche 8 ist unbeschichtet, um einen Splicer 21 wahlweise für Monofolien oder Verbundfolien zu nutzen. In den Einsatz 10, der die beiden Siegelflächen 5, 8 aufweist, ist die Heizeinrichtung 6 integriert, um durch dort fließenden Strom eine schnelle und direkte Aufwärmung der Siegelflächen 5, 8 zu erreichen. Der Einsatz 10 wird gegen eine Rille 9 eines Widerstandes 23 bewegt (1).In the embodiment of 4 has a sealing surface 5 a durably heated heating device 6 that as a reversible use 10 is executed, a non-stick coating 22 on and another seal surface 8th is uncoated to a splicer 21 optionally for mono films or composite films to use. In the insert 10 that the two sealed surfaces 5 . 8th has, is the heater 6 integrated, so that there is a fast and direct warming up of the sealing surfaces due to the current flowing there 5 . 8th to reach. The use 10 will be against a groove 9 of a resistance 23 emotional ( 1 ).

Beim Ausführungsbeispiel der 5 und 6 ist ein Einsatz 10, der zwei dauerbeheizbare Heizeinrichtungen 6 enthält, in einstückiger Weise ausgeführt. Er weist zwei parallel zueinander ausgerichtete, beschichtete Siegelflächen 5 in einer Siegelposition auf. Durch Drehung des Einsatzes 10 können zwei weitere Siegelflächen 8, die ebenfalls eine Antihaftbeschichtung 22 haben, in die Siegelposition gebracht werden, um jeweils eine als Bodennaht und eine als Kopfnaht dienende Quernaht 13 zu erzeugen.In the embodiment of 5 and 6 is an assignment 10 , the two permanent heating heaters 6 contains, executed in one piece. It has two parallel sealed sealing surfaces 5 in a sealed position. By turning the insert 10 can have two more sealing surfaces 8th , which is also a non-stick coating 22 have brought into the sealing position, each serving as a bottom seam and a head seam transverse seam 13 to create.

11
BackenkörperBack body
22
QuersiegelbackeCross-sealing jaw
33
vertikale Schlauchbeutelmaschinevertical Fill and seal machine
44
Längsnahtlongitudinal seam
55
Siegelflächesealing surface
66
Heizeinrichtungheater
77
Folienschlauchfilm tube
88th
weitere SiegelflächeFurther sealing surface
99
Rillegroove
1010
Einsatzcommitment
1111
Trenneinrichtungseparator
1212
Schlauchbeuteltubular bag
1313
Quernahtcross seam
1414
Folienbahnsheet
1515
Folienabzugfilm take-off
1616
Vorratsrollesupply roll
1717
Formschulterforming shoulder
1818
LängssiegelbackeLongitudinal sealing jaw
1919
FolientransportrichtungFilm transport direction
2020
Füllrohrfilling pipe
2121
SplicerSplicer
2222
AntihaftbeschichtungNon-stick coating
2323
Widerstandresistance
2424
Verbindungconnection

Claims (8)

Vorrichtung zum Verschweißen von thermoplastischem Kunststoff, insbesondere einer Folienbahn (14), welche einen derartigen Kunststoff aufweist, mit einem Backenkörper (1), mindestens einer Siegelfläche (5) am Backenkörper (1), einer Heizeinrichtung (6) zum Erwärmen der Siegelfläche (5), um einen in Wärmekontakt mit der Siegelfläche (5) befindlichen Kunststoff aufschmelzen und verschweißen zu können, sowie mit einem Einsatz (10) zum Einsetzen in den Backenkörper (1), wobei am Einsatz (10) die Siegelfläche (5) in einer Siegelposition vorgesehen ist, dadurch gekennzeichnet, dass der Einsatz (10) als dauerbeheizbare Heizeinrichtung (6) ausgestaltet ist.Device for welding thermoplastic material, in particular a film web ( 14 ), which comprises such a plastic, with a cheek body ( 1 ), at least one sealing surface ( 5 ) on the cheek body ( 1 ), a heating device ( 6 ) for heating the sealing surface ( 5 ), around one in thermal contact with the sealing surface ( 5 ) can be melted and welded plastic, and with an insert ( 10 ) for insertion into the jaw body ( 1 ), whereby at the employment ( 10 ) the sealing surface ( 5 ) is provided in a sealing position, characterized in that the insert ( 10 ) as a permanently heatable heating device ( 6 ) is configured. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Siegelfläche (5) gerade ist.Device according to claim 1, characterized in that the sealing surface ( 5 ) is straight. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Siegelfläche (5) konkav oder konvex gewölbt ist.Device according to claim 2, characterized in that the sealing surface ( 5 ) is concave or convex. Vorrichtung nach Anspruch 1, Anspruch 2 oder Anspruch 3, dadurch gekennzeichnet, dass als Heizeinrichtung (6) eine Heizpatrone vorgesehen ist.Apparatus according to claim 1, claim 2 or claim 3, characterized in that as a heating device ( 6 ) A heating cartridge is provided. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Vorrichtung als Quersiegelbacke (2) einer vertikalen Schlauchbeutelmaschine (3) ausgeführt ist, wobei zwischen zwei parallel zueinander ausgerichteten, in der Siegelposition befindlichen Siegelflächen (5) eine auslenkbare Trenneinrichtung (11) zum Durchtrennen einer Folienbahn (14) vorgesehen ist.Device according to one of claims 1 to 4, characterized in that the device as a transverse sealing jaw ( 2 ) of a vertical bagging machine ( 3 ) is executed, wherein between two parallel aligned, located in the sealing position sealing surfaces ( 5 ) a deflectable separating device ( 11 ) for severing a film web ( 14 ) is provided. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Einsatz (10) in einstückiger Weise ausgeführt ist, und dabei zwei parallel zueinander ausgerichtete Siegelflächen (5) in der Siegelposition aufweist.Device according to claim 5, characterized in that the insert ( 10 ) is executed in one piece, and thereby two parallel aligned sealing surfaces ( 5 ) in the sealing position. Vorrichtung nach Anspruch 3 und einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass eine Quersiegelbacke (2) zwei konkav gewölbte Siegelflächen (5) aufweist, und eine gegen diese Quersiegelbacke (2) bewegbare zweite Quersiegelbacke (2) zwei konvex gewölbte Siegelflächen (5) hat.Device according to claim 3 and one of claims 5 or 6, characterized in that a transverse sealing jaw ( 2 ) two concave sealing surfaces ( 5 ), and one against this transverse sealing jaw ( 2 ) movable second transverse sealing jaw ( 2 ) two convexly curved sealing surfaces ( 5 ) Has. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Vorrichtung als Längssiegelbacke (18) einer vertikalen Schlauchbeutelmaschine (3) oder als Splicer (21) ausgeführt ist.Device according to one of claims 1 to 4, characterized in that the device as a longitudinal sealing jaw ( 18 ) of a vertical bagging machine ( 3 ) or as a splicer ( 21 ) is executed.
DE200510034284 2005-07-22 2005-07-22 Bonding device for thermoplastics, especially foil strips, has a sealing surface on a jaw unit and a heating device to heat up the sealing surface Withdrawn DE102005034284A1 (en)

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DE200510034284 DE102005034284A1 (en) 2005-07-22 2005-07-22 Bonding device for thermoplastics, especially foil strips, has a sealing surface on a jaw unit and a heating device to heat up the sealing surface

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110342003A (en) * 2019-05-24 2019-10-18 嘉兴怀莲贸易有限公司 A kind of logistic management system based on logistics management software control
EP3632660A1 (en) * 2018-10-03 2020-04-08 Tetra Laval Holdings & Finance S.A. Angled or curved jaws for wrapping ice cream

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3443914A1 (en) * 1984-12-01 1986-06-05 Stiegler GmbH Maschinenfabrik, 7062 Rudersberg Machine having a welding bar serving to form welded seams in a thermoplastic film
US5067302A (en) * 1990-01-26 1991-11-26 Zip-Pak Incorporated Sealing jaws for zippered foil or film in form, fill and seal machines
DE4331067A1 (en) * 1993-09-13 1995-03-16 Volkhard Dr Ing Seiffert Apparatus for welding films
DE10005020A1 (en) * 2000-02-04 2001-08-09 Rovema Gmbh Thermoplastics welding equipment for production of tubular bags from plastic film has a heat sealing band on a deformable support

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3443914A1 (en) * 1984-12-01 1986-06-05 Stiegler GmbH Maschinenfabrik, 7062 Rudersberg Machine having a welding bar serving to form welded seams in a thermoplastic film
US5067302A (en) * 1990-01-26 1991-11-26 Zip-Pak Incorporated Sealing jaws for zippered foil or film in form, fill and seal machines
DE4331067A1 (en) * 1993-09-13 1995-03-16 Volkhard Dr Ing Seiffert Apparatus for welding films
DE10005020A1 (en) * 2000-02-04 2001-08-09 Rovema Gmbh Thermoplastics welding equipment for production of tubular bags from plastic film has a heat sealing band on a deformable support

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3632660A1 (en) * 2018-10-03 2020-04-08 Tetra Laval Holdings & Finance S.A. Angled or curved jaws for wrapping ice cream
CN110342003A (en) * 2019-05-24 2019-10-18 嘉兴怀莲贸易有限公司 A kind of logistic management system based on logistics management software control
CN110342003B (en) * 2019-05-24 2021-03-26 深圳易世通达科技有限公司 Logistics management system based on control of logistics management software

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