SK1572000A3 - Apparatus for welding weldable films - Google Patents

Apparatus for welding weldable films Download PDF

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Publication number
SK1572000A3
SK1572000A3 SK157-2000A SK1572000A SK1572000A3 SK 1572000 A3 SK1572000 A3 SK 1572000A3 SK 1572000 A SK1572000 A SK 1572000A SK 1572000 A3 SK1572000 A3 SK 1572000A3
Authority
SK
Slovakia
Prior art keywords
welding
separating
disc
welding device
opposing
Prior art date
Application number
SK157-2000A
Other languages
Slovak (sk)
Inventor
Karl-Heinz Kallfass
Original Assignee
Kallfass 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 Kallfass Gmbh filed Critical Kallfass Gmbh
Publication of SK1572000A3 publication Critical patent/SK1572000A3/en

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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
    • 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
    • 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
    • B29C65/74—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
    • 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
    • B29C65/7435—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 the tool being a roller
    • 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
    • B29C65/749—Removing scrap
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • B29C66/80—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81264—Mechanical properties, e.g. hardness
    • 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
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—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
    • 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
    • B29C65/245—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 the heat transfer being achieved contactless, e.g. by radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—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
    • B29C66/81415—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 bevelled
    • B29C66/81417—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 bevelled being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/007—Hardness
    • 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
    • B65B51/18—Applying or generating heat or pressure or combinations thereof by endless bands or chains
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/005—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for removing material by cutting

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

Abstract

The welding unit(20) produces a longitudinal welded seal between two film layers(21,22) of a packaging film enclosing objects and comprises a rotating heated cutting and welding wheel(17) and a counter wheel(18) for cutting off excess film outside the weld line. The cutting and welding wheel is hard and/or stiff and the counter wheel is semi-flexible in the working area.

Description

Zváracie zariadenie na zvaríteľné fólieWelding equipment for weldable foils

Oblasť technikyTechnical field

Vynález sa týka zváracieho zariadenia, ktoré tvor! súčasť bliaceho stroja na balenie predmetov, ktorým sú vo viac vrstvách zvárané zvariteľné kontinuálne obalové fólie v tvare z jednej strany otvoreného rukáva, ktorý predmety z jednej strany v pozdĺžnom smere obaľuje a/alebo prečnieva cez okraje obaľovaných predmetov a tvorí tak presahy, ktoré v pozdĺžnom smere presahujú cez balený predmet. Zváracie zariadenie obsahuje rotujúci, ohrievaný deliaci zvárací kotúč na zvarenie vrstiev obalovej fólie a na oddelenie ich presahov, a aspoň jeden, na deliaci-zvárací kotúč doliehajúci a společne s ním sa otáčajúci protiľahlý kotúč.The present invention relates to a welding device which comprises: part of a blending machine for wrapping articles in which the weldable continuous wrapping foils are welded in multiple layers in the form of an open-ended sleeve which envelops the articles from one side in the longitudinal direction and / or protrudes over the edges of the objects to be coated directions extend beyond the packaged object. The welding device comprises a rotating, heated splitting roll for welding the layers of the wrapping film and for separating their overlaps, and at least one opposing roll rotating on the splitting roll and rotating therewith.

PoteraiSí stav technikyThe prior art

Zariadenie tohto druhu je známe napríklad z patentového spisu US č. 5. 282 349. V tomto zariadení sú balené predmety vložené do obalovej fólie v tvare z jednej strany otvoreného kontinuálneho rukáva, ktorá je potom prostredníctvom takzvaného stranového zváracieho zariadenia zvarená. Toto zváranie je robené termicky, nahriatim obalovej fólie, pričom obalová fólia je vedená prostredníctvom dvoch navzájom odvaľujúcich sa kotúčov, jedného ohriateho zváracieho kotúče a jedného protiľahlého kotúča. Pritom je bližSie nepopísaným spôsobom oddeľovaný presah obalovej fólie. Na toto oddeľovanie sú vyvinuté rôzne metódy, okrem inej s použitím pevných nožových zariadení, otáčavých rezných kotúčov, alebo obdobných nástrojov.A device of this kind is known, for example, from U.S. Pat. In this device, the wrapped articles are inserted into a wrapping film in the form of an open continuous sleeve from one side, which is then welded by a so-called side welding device. This welding is done thermally by heating the wrapping foil, the wrapping foil being guided by means of two mutually rolling rolls, one heated welding roll and one opposing roll. In this case, the overlap of the wrapping film is separated in an unspecified manner. Various methods have been developed for this separation, inter alia, using fixed knife devices, rotary cutting discs, or similar tools.

Podstata vvnálezuThe essence of the invention

Úloha vynálezu spočíva vo vytvorení zváracieho zariadenia už uvedeného typu, v ktorom je kombinácia deliaceho-zváracieho kotúča s protiľahlým kotúčom podstatne vylepšená, pri dosiahnutí ich vysokej životnosti.SUMMARY OF THE INVENTION The object of the invention is to provide a welding device of the type already mentioned, in which the combination of a splitting-welding disc with an opposing disc is substantially improved, while attaining a long service life.

Táto úloha je podľa vynálezu vyriešená tak, že deliaci-zváračí kotúč vykazuje v stykovej oblasti s protiľahlým kotúčom dostatočnú tvrdosť, resp. tuhosť, zatiaľ čo protiľahlý kotúč kotúč v tej istej stykovej oblasti vykazuje čiastočnú pružnosť. V dôsledku svojej čiastočnej pružnosti sa tak môže protiľahlý kotúč prispôsobiť zvlášť vytvorenému profilu deliaceho zváracieho kotúča, a tak Ba môže dosiahnuť podstatné zlepšenie zvárania a/alebo oddeľovania vrstiev obalovej fólie. Z časti pružná časť protiľahlého kotúča je pritom najmenej tak široká ako styková plocha deliaceho-zváracieho kotúča, a to znamená, že sa rozprestiera axiálne cez celú šírku protiľahlého kotúča.This object is achieved according to the invention in such a way that the separating-welding disc has a sufficient hardness in the contact region with the opposite disc. stiffness, while the opposing roll of the roll in the same contact region exhibits partial elasticity. Due to its partial flexibility, the opposing roll can thus be adapted to the specially formed profile of the separating welding roll, and thus Ba can achieve a significant improvement in the welding and / or separation of the packaging film layers. The elastic portion of the opposing roll is in part at least as wide as the contact surface of the separating-welding roll, and this means that it extends axially over the entire width of the opposing roll.

Čiastočná pružnosť protiľahlého kotúča sa môže docieliť použitím vhodného materiálu obsahujúceho fluór, napríklad fluórelastoméru a pod. zo skupiny syntetických živíc a vulkanizovateľných druhov gúm. Výhodné je, keď čiastočne pružný materiál tvorí jednu vrstvu s dostatočnou hrúbkou. Hrúbka tejto vretvy je v rozmedzí medzi 1 mm a 10 mm, ako výhodná ale je hrúbka vrstvy okolo 5 mm. Jadro protiľahlého kotúča pritom môže byť z dôvodu zaiBtenia jeho dostatočnej mechanickej stability zhotovené z kovu. Podľa jednej z ďalších možností príkladného vyhotovenia môže byť protiľahlý kotúč na svojom vonkajšom obvode opatrený najmenej jedným obvodovým prstencom z čiastočne pružného materiálu, ktorý má v podstate pravouhlý priečny prierez. Tvrdosť čiastočne pružného materiálu je v rozmedzí medzi 50 a 150 Shore. Ako alternatíva obvodového prstenca zhotoveného z homogenného materiálu s rovnakou tvrdosťou, môže byť obvodový prstenec zhotovený z viac vrstiev materiálu s rozdielnou tvrdosťou.Partial elasticity of the opposing disc can be achieved by using a suitable fluorine-containing material, for example a fluoroplastomer and the like. from the group of synthetic resins and vulcanizable types of gums. Preferably, the partially resilient material forms a single layer of sufficient thickness. The thickness of this strand is in the range between 1 mm and 10 mm, but preferably the layer thickness is about 5 mm. In this case, the core of the opposing disk may be made of metal to ensure sufficient mechanical stability. According to a further embodiment, the opposing disk may have at least one circumferential ring of partially elastic material at its outer periphery having a substantially rectangular cross-section. The hardness of the partially resilient material is between 50 and 150 Shore. As an alternative to the peripheral ring made of a homogeneous material of equal hardness, the peripheral ring may be made of multiple layers of material of different hardness.

Deliaci-zváracl kotúč môže byť v podstate zhotovený k kovu, najmä z ocele. Pritom je výhodná najmä chrómová oceľ.The separating-welding disc can be made essentially of metal, in particular of steel. Chromium steel is particularly preferred.

Alternatívne možnosti sú tie, že deliaci-zváračí kotúč je z časti zhotovený z hliníka, najmä jeho jadro, pretože v dôsledku veľmi dobrej tepeľnej vodivosti hliníka sa dosiahne rovnomernejší obrev deliaceho-zváracieho kotúča. Výhodné takisto je, keď je deliaci-zvárací kotúč zhotovený ako jeden diel, resp. z jedného odliatku. Zhotovenie z jedného kusa je výhodné nielen z hľadiska mechanickej pevnosti, ale aj z hľadiska prenosu tepla.Alternative possibilities are that the cutting-welding disc is partly made of aluminum, in particular its core, because, due to the very good thermal conductivity of the aluminum, a more uniform coating of the cutting-welding disc is achieved. It is also advantageous if the separating-welding disc is formed as one piece or one part. from one casting. The one-piece design is advantageous not only in terms of mechanical strength but also in terms of heat transfer.

byť v stykovej oblasti Časti opatrený povlakom povlak je pritom veľmi tenký materiály obsahujúce fluór,be coated in the contact area of the parts with a very thin fluorine-containing material,

Deliaci-zvárací kotúč mdže s protiľahlým kotúčom aspoň z zabraňujúcim priľnutie fólie. Tento a ako materiál môžu byť použité napríklad polytetraíluóretylén. Povlak môže pri použití určitých druhov fóliových obalov, napríklad z polyetylénu, zabrániť ich priľnavosti na deliaci-zvárací kotúč.The separating-welding disc may be provided with an opposing disc at least of preventing film adhesion. This and, for example, polytetrafluoroethylene can be used. The coating may prevent adhesion to the separating-welding roll when using certain types of foil wrappers, such as polyethylene.

Oddeľovanie vrstiev fólie deliacim-zváracím kotúčom môže byť výhodne dosiahnuté zvláštnym vyhotovením axiálneho profilu jeho vonkajšieho obvodu. VonkajSÍ obvod deliaceho-zváracieho kotúča sa v podstate skladá z deliacej oblasti s obvodovým výstupkom, ktorý je v podstate vytvorený v tvare ostria a ďalej z najmenej jedného zvarovacieho úseku, nachádzajúceho sa stranou vzhľadom na obvodový výstupok. Zvárací úsek je pritom v porovnaní s obvodovým výstupkom SirSÍ a nadväzuje priamo na obvodový výstupok. Ako obvodový výstupok, tak aj zvárací úsek eú ohrievané, a tak je možno podstatne zlepSiť proces, reep. výsledok delenia. Pri procese delenia je obvodový výstupok zatlačovaný do z Časti pružného prstenca na protiľahlom kotúči, pričom medzi oboma kotúčmi nachádzajúce sa vrstvy obalovej fólie sú prostredníctvom tohto obvodového výstupku oddelené. Obvodový výstupok vnikne do pružného prstenca na protiľahlom kotúči do takej hĺbky, až postranné zváracie úseky deliaceho-zváracieho kotúča doľahnú na protiľahlý kotúč. Výhoda oproti rezacím kotúčom alebo nožniciam spočíva v tom, že pri oddeľovaní presahov obalovej fólie nedochádza k vzájomnému styku kovových častí. Ciastečne pružný materiál protiľahlého kotúča je obvodovým výstupkom vytvoreným na deliacom-zváracom kotúči stláčaný, avBak poskytuje dostatočný odpor na oddelenie presahov vrstiev obalovej fólie, nachádzajúcich sa medzi oboma kotúčmi.Separation of the film layers by the separating-welding roll can advantageously be achieved by a special embodiment of the axial profile of its outer periphery. The outer periphery of the separating-welding disc consists essentially of a separating region with a peripheral projection which is substantially formed in the form of a blade and furthermore of at least one welding section located laterally with respect to the peripheral projection. The welding section is in comparison with the peripheral projection SirSi and is connected directly to the peripheral projection. Both the peripheral projection and the welding section are heated, and thus the process, reep, can be substantially improved. division result. In the separation process, the circumferential projection is pushed into the part of the elastic ring on the opposite disc, the layers of the wrapping film present between the two discs being separated by this circumferential projection. The circumferential projection penetrates into the elastic ring on the opposing disc to a depth such that the lateral welding sections of the separating-welding disc contact the opposing disc. The advantage over cutting discs or scissors is that the metal parts do not come into contact with each other when separating the overlaps of the packaging film. The partially resilient material of the opposing roll is compressed by the peripheral projection formed on the separating-welding roll, but provides sufficient resistance to separate the overlapping layers of the wrapping film between the two rolls.

Obvodový výstupok vytvorený na obvode deliaceho-zváračieho kotúča na oddeľovanie vrstiev obalovej fólie má trojuholníkový tvar, najmä tvar rovnoramenného trojuholníka. Vrcholový uhol obvodového výstupku je v rozmedzí medzi 25° a 90°, výhodne však 40°. Vrchol výstupku nesmie byť vybrúsený do ostria noža, môže byť poprípade mierne zaoblený,The circumferential projection formed on the periphery of the separating-welding roll for separating the layers of the wrapping film has a triangular shape, in particular an isosceles triangle. The apex angle of the peripheral projection is between 25 ° and 90 °, but preferably 40 °. The tip of the projection must not be ground to the knife edge, it may be slightly rounded,

Podľa jedného z výhodných príkladných vyhotovení vynálezu, sa na oboch stranách deliacej oblasti, tvorenej obvodovým výstupkom, nachádzajú zváracie úseky, ktoré priamo nadväzují na obvodový výstupok. Výhodné je, keď sú zváracie úseky na obvode deliaceho-zváracieho kotúča usporiadané symetricky vzhľadom na obvodový výstupok. Zváracie úseky sú rovnobežné s osou otádania deliaceho-zváracieho kotúča, pridom zvárací úsek môže byť približne troj až desaťnásobne širší ,než deliaca oblasť. Ďalšia možnosť spodíva v tom, že axiálny profil protiľahlého kotúda, najmä jeho prstenec zhotovený z čiastočne pružného materiálu, v podstate vykazuje v podstate negatívny tvar axiálneho profilu deliaceho-zváracieho kotúda. Tým sa môže dosiahnuť aepoň čiastočné odstrihávanie vrstiev obalovej fólie, nachádzajúcich sa medzi oboma kotúčmi.According to one preferred embodiment of the invention, welding sections are provided on both sides of the dividing area formed by the peripheral projection, which are directly connected to the peripheral projection. It is advantageous if the welding sections are arranged symmetrically with respect to the circumferential projection on the circumference of the separating-welding disc. The welding sections are parallel to the axis of rotation of the separating-welding disc, by adding the welding section may be approximately three to ten times wider than the separating area. A further possibility is that the axial profile of the opposing disc, in particular its ring made of a partially resilient material, essentially exhibits a substantially negative shape of the axial profile of the separating-welding disc. In this way, at least a partial cutting of the layers of the wrapping film between the two rolls can be achieved.

výhodné, keď je v nepatrnom odstupe kotúda. Pri náležité napríklad už uvedenýmit is advantageous if the disc is slightly spaced. If appropriate, for example, already mentioned

Jedna z možností ohrevu deliaceho-zváracieho kotúda je zabudované elektrické kúrenie, pridom v dôsledku otáčania tohto kotúda musia byť na prívod prúdu použité trecie kontakty. Na ohrev deliaceho-zváracieho kotúda je k nemu priradené externé vykurovacie zariadenie, ktorého elektrické pripojenie je možno urobiť jednoduchým spôsobom. Deliaci-zvárači kotúd je ohrievaný len v určitej časti, najmä na jeho bodných stranách. Z dôvodu dosiahnutia dobrého prenosu tepla konvekciu a/alebo žiarením je vykurovacie zariadenie usporiadané len od postrannej plochy deliaceho-zváracieho upravených povrchových plochách, opatrených povlakom odstraňujúcim priľnavosť íólie.One of the possibilities of heating of the separating-welding disc is built-in electric heating, and due to the rotation of this disc, frictional contacts must be used for power supply. To heat the separating-welding disc, it is associated with an external heating device, the electrical connection of which can be made in a simple manner. The separating-welding coil is only heated in a certain part, especially on its stabbing sides. In order to achieve good heat transfer by convection and / or radiation, the heating device is arranged only from the lateral surface of the separating-welding treated surfaces provided with a coating to remove the adhesion of the clay.

môže byť deliaci-zvárací kotúd v priamom kontakte s vykurovacím zariadením, a to vedie k ďalšiemu zlepšeniu prenosu tepla. Výhodné je, keď je ohrievaná aspofí radiálne vonkajšia oblasť deliaceho-zváracieho kotúča, ktorá je najbližšie stykovej oblasti s protiľahlým kotúčom. Vykurovacie zariadenie najmä z dôvodu dosiahnutia rovnomerného ohrevu, môže byť aBPoň z časti upravené v obvodovom smere.the separating-welding coil can be in direct contact with the heating device, and this leads to a further improvement in heat transfer. Advantageously, the at least radially outer region of the separating-welding disc which is closest to the contact area with the opposing disc is heated. In particular, in order to achieve a uniform heating, the heating device may be partly arranged in the circumferential direction.

Vykurovacie zariadenie môže byť vytvorené ako elektrické vykurovacie zariadenie s aspoň jedným vykurovacím telesom, ktoré je v podobe odporovej vykurovacej Špirály usporiadané rovnobežne s rovinou otáčania deliaceho-zváracieho kotúča. Plošne usporiadané vykurovacie teleso spôsobuje v podstate rovnomerný ohrev jednej zo strán deliaceho-zváracieho kotúča na požadovanú teplotu. Ako variant ohrevu prichádza do úvahy takisto použitie infračerveného žiariča alebo indukčný ohrev.The heating device may be designed as an electric heating device with at least one heating element, which in the form of a resistive heating coil is arranged parallel to the rotational plane of the separating-welding disc. The flat heating element causes a substantially uniform heating of one of the sides of the separating-welding disc to the desired temperature. The use of an infrared radiator or induction heating is also possible as a heating variant.

Na použitie rôznych druhov obalových fólii, ako napríklad polyolefínových fólii alebo polypropylénových fólii, je výhodná teplota ohrevu v rozmedzí od 120° do 250° . V závislosti na tlaku, ktorým sú vrstvy obalovej fólie pri zváraní stláčané, sa mení potrebná teplota, napríklad v rozmedzí od 165° do 175°. Na udržanie teploty v požadovanom rozmedzí, môžu byť k dispozícii teplotné snímače, pevne umiestené napríklad v zóne vykurovacieho zariadenia. Jedna z možnosti je použiť infračervený teplotný snímač, ktorý môže priamo zisťovať teplotu vykurovacieho zariadenia, alebo teplotu deliaceho-zváracieho kotúča. Ovládanie ohrevu je výhodne Bpojené s ovládaním baliaceho zariadenia.For the use of different types of packaging films, such as polyolefin films or polypropylene films, a heating temperature in the range of 120 ° to 250 ° is preferred. Depending on the pressure with which the layers of the wrapping film are compressed during welding, the required temperature varies, for example, from 165 ° to 175 °. In order to maintain the temperature in the desired range, temperature sensors may be provided, fixed for example in the zone of the heating device. One possibility is to use an infrared temperature sensor which can directly detect the temperature of the heating device or the temperature of the separating-welding disc. The heating control is preferably connected to the control of the packaging device.

Podľa ďalšieho vyhotovenia vynálezu môže byť zváracie zariadenie opatrené transportným zariadením, ktoré privádza vrstvy obalovej fólie pred deliaci-zvárací kotúč a/alebo ich za deliacim-zváraclm kotúčom odvádza, najmä v oblasti ich oddeľovania, a tak je podstatne zlepšený výsledok oddeľovania obalových fólii. Ako výhodné môžu byť použité otáčajúce sa vodiace prostriedky, najmä kotúče usporiadané v rade, alebo najmenej dva remene doliehajúce vzájomne na seba, medzi ktoré sa chytia obalové fólie v dôsledku toho, že sa remene zovrú. Tieto remene môžu na seba doliehať na pomerne dlhom úseku a môžu byť na eeba dodatočne pritláčané napríklad prítlačnými lištami. Podľa ďalšieho vyhotovenia vynálezu môžu byť použitá najmenej dva páry remeňov doliehajúce vzájomne na seba. Aby sa dalo priblížiť bo zváracím zariadením, resp. zvárať vrstvy obalovej fólie pokiaľ možno najbližšie pri balenom predmete, môže byť na tejto strane obiehajúci pár remeňov užší, než druhý pár.According to a further embodiment of the invention, the welding device can be provided with a conveying device which feeds the wrapping film layers upstream of the separating-welding disc and / or discharges them downstream of the separating-welding disc, particularly in the area of separating them. It is advantageous to use rotating guiding means, in particular discs arranged in a row, or at least two belts abutting one another, between which the wrapping foils are caught by the belts being clamped. These belts may bear against each other over a relatively long section and may be additionally pressed against themselves, for example by means of pressure strips. According to a further embodiment of the invention, at least two pairs of belts abutting one another may be used. In order to be closer to the welding device, respectively. welding the layers of packaging film as close as possible to the packaged article, the circumferential pair of belts on this side may be narrower than the other pair.

Najmä keď sa balia predmety väčších objemov, kde sa môže vyskytnúť možnosť, že nad sebou ležiace vrstvy obalovej íólie nie sú dostatoône rovinné, resp. sú zložené do záhybov, alebo sú presunuté, je k dispozícii prítlačné zariadenie na vzájomné pritlačenie vretiev obalovej fólie. Prítlačné zariadenie je usporiadané aspoň v oblasti zvárania vrstiev obalovej fólie, na oboch Btranách. Podľa ďalšieho vyhotovenia sa však môže prítlačné zariadenie rozprestierať na dlhšom úseku, vychádzajúcom od oblasti zvárania, eventuálne kúsok pred ňou. Obalová fólia v pozdĺžnom smere nekľže na prítlačnom zariadení, ale sa odvíja prostredníctvom odvaľovaclch kladiek, alebo je prostredníctvom aspoň z časti sa pohybujúceho prítlačného zariadenia stláčaná. Podľa možnosti môžu byť na tento cieľ použité najmenej dva vzájomne sa odvaľujúce kotúče, tvoriace pozdĺžnu valčekovú dráhu. Podľa ďalšieho vyhotovenia môže byť táto dráha nahradená v pozdĺžnom smere obiehajúcimi remeňmi, pripadne dvojicou navzájom obiehajúcich a vzájomne pritláčaných remeňov. Jedna z možností je takiBto kombinácia jedného prítlačného zariadenia a navzájom obiehajúceho páru remeňov.Especially when articles of larger volumes are packed, where it may be possible that the overlying layers of the packaging clay are not sufficiently planar, respectively. If they are folded into or folded, a pressing device is provided to press the wrapping film rolls together. The pressing device is arranged at least in the welding area of the packaging film layers, on both sides. According to a further embodiment, however, the pressing device can extend over a longer section starting from the welding area, possibly a bit in front of it. The wrapping film in the longitudinal direction does not slip on the pressing device, but is unwound by means of rolling rollers or is compressed by means of at least a part of the pressing device. Preferably, at least two mutually rolling rolls forming a longitudinal roller path may be used for this purpose. According to a further embodiment, this track can be replaced in the longitudinal direction by circulating belts or a pair of belts circulating and pressed against one another. One possibility is also a combination of one pressing device and a pair of belts circulating one another.

Výhodné je, keď vrBtvy obalovej fólie bú prostredníctvom zváracieho zariadenia spojené pokiaľ možno najbližšie pri balenom predmete. Preto sú deliace-zváracl kotúče a/alebo protiľahlý kotúč uložené ako konzolovite vyložené kotúče. Takisto ďalšie funkčné jednotky, napríklad transportné a/alebo prítlačné zariadenia, môžu byť uložené jednostranne, kde rovina deliaceho-zváracieho kotúča prečnieva len o nepatrný kúsok. Len ohrevné zariadenie deliaceho-zváracieho kotúča, ako jedno z týchto funkčných zariadení, môže byť urobené na strane uloženia deliaceho-zváracieho kotúča. Pritom je zrejmé, že priestup tepla deliacim-zváraclm kotúčom by mal byť volený tak, aby na jeho strane privrátenej k balenému predmetu bola dosiahnutá požadovaná zváracia teplota, nevyhnutná na vznik zodpovedajúceho zváracieho šva v tejto oblasti.It is advantageous if the layers of the wrapping foil are joined by the welding device as close as possible to the packaged article. Therefore, the splitting discs and / or the opposing disc are supported as consecutively lined discs. Also, other functional units, for example transporting and / or pressing devices, can be mounted on one side, where the plane of the separating-welding roll protrudes by a small bit. Only the heating device of the separating-welding disc, as one of these functional devices, can be provided on the bearing side of the separating-welding disc. It is obvious that the heat transfer through the separating-welding disc should be chosen so that the desired welding temperature necessary for the formation of a corresponding welding seam in this area is achieved on its side facing the packaged object.

Jednotlivé časti, resp. komponenty zváracieho zariadenia môžu byť od obalovej fólie oddialené. Predovšetkým môže byť nadvihnutý deliaci-zváračí kotúč. V pokojovom stave zariadenia môže byť tento kotúč vyzdvihnutý nad obalovú fóliu, aby nenastalo jej natavenie, resp. pretavenie. Nadvihnutie zváracieho kotúča môže byť urobené nezávislo na protiľahlom kotúči a/alebo transportnom, pripadne prítlačnom zariadení. Ďalej je žiaduce, aby sa obalová fólia mohla zo zváracieho zariadenia odobrať, napríkald pri jej výmene alebo pri vložení novej fólie. Preto je dostačujúce, aby bola zdvihnutá len jedna polovica zváracieho zariadenia, predovšetkým transportná, prípadne prítlačné zariadenie.Individual parts, respectively. the components of the welding device may be separated from the packaging film. In particular, the separating-welding disc can be raised. When the machine is at rest, this roll can be lifted above the wrapping foil to prevent melting and / or melting. remelting. The welding disc can be lifted independently of the opposing disc and / or the transport or pressure device. Furthermore, it is desirable that the wrapping film can be removed from the welding device, for example when it is replaced or a new film is inserted. Therefore, it is sufficient that only one half of the welding device, especially the transporting or pressing device, is raised.

Podľa jedného z variantov príkladného vyhotovenia môžu byť deliaci-zvárací kotúč spoločne s protiľahlým kotúčom namontované pevne na základnú dosku. Tým sa dosiahne presné jednoduché mechanické nastavenie.According to a variant of the exemplary embodiment, the separating-welding disc together with the opposing disc can be fixedly mounted on the base plate. This achieves a precise, simple mechanical adjustment.

V mieste oddeľovania presahov obalovej fólie je takisto výhodné, aby v smere transportu bolo usporiadané separačné zariadenie na prečnievajúcej časti fólie, a tak sa zabráni, aby tieto prečnievajúce časti pri oddeľovaní prilipli v ďalších pracovných operáciách na obalovej fólii. Separačné zariadenie sa nachádza za miestom kde sa oddeľujú presahy obalovej fólie, a môže byť urobené v tvare klina alebo v tvare čepele.At the point of separation of the overlapping of the wrapping film, it is also advantageous that a separating device is provided in the conveying direction on the overlapping part of the film, thus preventing these overlapping parts from sticking to further wrapping operations on the wrapping film. The separating device is located beyond the point where the overlapping of the wrapping film is separated, and may be in the form of a wedge or a blade.

Zlepšenie vzájomnej zvariteľnosti vrstiev obalovej fólie sa môže dosiahnuť tým, že deliaci-zváračí kotúč dolieha na protiľahlý kotúč pod tlakom. V dôsledku tepelného účinku natavené vrstvy fólie sú tak silne stlačené, a tak sa dosiahne dostatečné priľnutie, resp. materiálové splynutie. Prltlak ktorým je deliaci-zvárací kotúč pritláčaný, je v rozmedzí medzi 10 až 50 N/mm2, vztiahnuto na šírku axiálneho profilu kotúča, výhodne všakAn improvement in the weldability of the layers of the wrapping film can be achieved by having the separating-welding roll abutting the opposing roll under pressure. As a result of the thermal effect, the melted film layers are thus strongly compressed, and thus sufficient adherence or adhesion is achieved. material fusion. The down pressure by which the separating-welding roll is pressed is in the range between 10 and 50 N / mm 2 , based on the width of the axial profile of the roll, but preferably

N/nunz . Tento pritlak môže byť vyvinutý buď predpnutou pružinou, alebo prostredníctvom elektromagnetu, ktorý pôsobí proti mechanickej pružine, slúžiacej ako obmedzujúci doraz. Ako alternatíva tohto vyhotovenia môže byť prítlačná sila vyvodená pneumaticky.N / nunz. This pressure can be applied either by a pre-tensioned spring or by means of an electromagnet which acts against a mechanical spring serving as a limiting stop. As an alternative to this embodiment, the pressing force can be applied pneumatically.

Z dôvodu, aby sa zabránilo vzájemnému posuvu vrstiev obalovej fólie môžu byť deliaci-zvárací kotúč a protiľahlý kotúč poháňané synchrónne, napríklad vzájomne spriahnutým pohonom. Jedna z možností je použiť jeden pohon na oba kotúče, pričom prenos otáčavého pohybu by mal byť urobený bez prekíznutia, napríklad prostredníctvom ozubených kolies alebo ozubeného remeňa. Týmto centrálnym pohonom môžu byť takisto poháňané ďalšie pohyblivé funkčné jednotky, napríklad transportné zariadenie a/alebo prítlačné zariadenie.In order to prevent the layers of the wrapping film from moving relative to one another, the separating-welding disc and the opposing disc can be driven synchronously, for example by a coupled drive. One possibility is to use one drive on both discs, and the transmission of the rotary movement should be done without crossing, for example by means of gears or a toothed belt. Other movable functional units, for example a transport device and / or a pressing device, can also be driven by this central drive.

Tieto a ďalšie znaky vyplývajú nielen z patentových nárokov, ale aj z opisu a výkresov, pričom jednotlivé znaky predstavujú ako samé o sebe, tak aj vo forme viac podkombinácií ochrany schopné riešenie podľa príkladných vyhotovení.These and other features are apparent not only from the claims, but also from the description and drawings, wherein the individual features, both per se and in the form of multiple sub-combinations of protection, are capable of being solved according to exemplary embodiments.

Prehľad obrázkov na výkresochBRIEF DESCRIPTION OF THE DRAWINGS

Príkladné vyhotovenie vynálezu je znázornené na priložených výkresoch a bližšie objasnené v nasledujúcom opise. Tu je:An exemplary embodiment of the invention is shown in the accompanying drawings and explained in more detail in the following description. Here is:

Obr. 1 schéma usporiadania zváracieho zariadenia baliaceho stroja,Fig. 1 shows an arrangement diagram of a welding device of a packaging machine,

Obr. 2 bočný pohľad na zváracie zariadenie,Fig. 2 shows a side view of the welding device,

Obr. 3 profily deliaceho-zváracieho kotúča a pritiľahlého kotúča v polohe vzájomného oddialenia,Fig. 3 profiles of the separating-welding disc and the adjacent disc in the position of mutual spacing,

Obr. 4 profily kotúčov z obr. 3 v polohe vzájomného pritlačenia,Fig. 4 shows the disc profiles of FIG. 3 in a pressing position,

Obr. 5 jednostranné uloženie deliaceho-zváracieho kotúča společne s pevne umiesteným ohrevným zariadením.Fig. 5 shows a one-sided bearing of the separating-welding disc together with a fixed heating device.

Príklady vyhotovenia vynálezuDETAILED DESCRIPTION OF THE INVENTION

Na obr. 1 je iba schematicky znázornené spoleCné pôsobenie zváracieho zariadena 22 podľa vynálezu s baliacim strojom XI, ktorý je tu znázornený len z Časti. Na tu bližšie neznázornenom, inak ale známom transportnom páse sa pohybujú v smere transportu T balené predmety 12 v tvare plochého kvádra, ktoré sú uložené v obalovej fólii 12- Obalová fólia 12 je z jednej strany v pozdĺžnom smere uzavretá, zatiaľ Co z opačnej strany je otvorená, a jej voľné okraje musia byť zváracím zariadením 22 ešte zvarené. Ako je zrejmé z obr. 1, okraj vrchnej vrstvy 21 obalovej fólie 12 je znázornený plnou Čiarou, zatiaľ Čo okraj spodnej vrstvy 22 je znázornený Čiarkované. Ako sú predmety 12 vkladané do obalovej fólie 12. je známe z doterajšieho stavu techniky. Obalová fólia 12 môže byť poprípade otvorená na oboch stanách baleného predmetu 12, pričom na jej zvarenie by potom boli potrebné dve zváracie zariadenia 22Zváracie zaradenie 22 obsahuje dva, na dráhe trojúhelníka obiehajúce páry remeňov 23» ktoré sa skladajú z predného užšieho remeňa 2Z a zadného Širšieho remeňa 23· Oba páry remeňov 23 bú usporiadané symetricky na rovinu obalovej fólie 12. Semene 27 sú vedené cez vŕtanú kladku 2S, ktorá je opatrená tu bližšie neznázorneným pohonom. V trujuholnlku medzi užším a širším remeňom 27 dolieha na obalovú fóliu 12 deliaci-zváračí kotúC 17. ktorý je pritláčaný na protiľahlý kotúC 12, nachádzajúci sa pod obalovou fóliou 12· Oba kotúCe 1Z a 12 sú poháňané synchrónne. V mieste ich uloženia sú obe vrstvy 21 a 22 obalovej fólie 12 navzájom spojené, pričom presah 22 obalovej fólie 12 je oddelený a následne sa odoberie a odtransportuje odvádzacím zariadením 12.In FIG. 1 shows only a schematic representation of the interaction of a welding device 22 according to the invention with a packaging machine XI, which is only shown here in part. On a not shown but otherwise known conveyor belt, packed flat-block shaped articles 12, which are embedded in the wrapping film 12, move in the transport direction T, and the wrapping film 12 is closed from one side in the longitudinal direction while open, and its free edges must still be welded by the welding device 22. As shown in FIG. 1, the edge of the topsheet 21 of the wrapping film 12 is shown in solid line, while the edge of the bottomsheet 22 is shown in dotted lines. How articles 12 are inserted into the packaging film 12 are known in the art. The wrapping film 12 may optionally be opened at both tents of the packaged article 12, and two welding devices would then be required to weld it. Welding assembly 22 comprises two pairs of belts 23 ' The two pairs of belts 23 are arranged symmetrically to the plane of the wrapping film 12. The seeds 27 are guided through a bore roller 2S, which is provided with a drive (not shown). In the trianguage between the narrower and the wider belt 27, the wrapping film 12 abuts the separator-welding disc 17, which is pressed against the opposing disc 12 located below the wrapping film 12. Both the rolls 1Z and 12 are driven synchronously. At the point of deposition, the two layers 21 and 22 of the wrapping film 12 are connected to each other, the overlap 22 of the wrapping film 12 being separated and subsequently removed and transported by the removal device 12.

Obalová fólia 12 je takisto zvarená a oddelená medzi jednotivými balenými predmetmi 12· Keďže ale tento problém, ktorý je ostatne známy zo stavu techniky, nie je predmetom prihlášky vynálezu, nie je naďalej bližšie opisovaný. K tomuto cieľu môže byť použité rámové zváracie zariadenie, pozdĺžny smer obalovej fólie 13. ktorá transportu . T pred zváracím zariadením 20 obalová fólia 12 společne s predmetmi 12 dopravovaná k zváraciemu zariadeniu 22 už skrátená na prísluSnú dĺžku.The packaging film 12 is also welded and separated between the individual packaged articles 12 However, since this problem, which is further known from the prior art, is not the subject of the present invention, it is not described in further detail. For this purpose, a frame welding device can be used, the longitudinal direction of the packaging film 13 for transport. T in front of the welding device 20, the wrapping film 12 together with the articles 12 conveyed to the welding device 22 has already been shortened to an appropriate length.

umiestené priečne na sa nachádza v smere V tomto prípade jeplaced transversely on is in the direction in this case is

Na obr. 2 je znázornené zváracie zariadenie 20 v pohľade od baleného predmetu 12- 2 vyobrazenia je zrejmé, že v rôznych rovinách, ktoré sú rovnobežné s nákresňou, sú usporiadané rôzne funkčné zariadenia.In FIG. 2 shows the welding device 20 in a view from the packaged object 12-2 of the drawing, it is apparent that different functional devices are arranged in different planes parallel to the drawing.

Obe vrstvy 21 a 22 obalovej fólie 12 sú v smere transportu T privázdané od napínacieho zariadenia 2á- Napínacie zariadenie 2á. sa skladá z jedného vrchného a jedného spodného napínacieho kotúča 2£, ktoré sa na sebe navzájom odvaľujú. Rovina otáčania oboch napínacích kotúčov 22 i® kolmá na rovinu obalovej fólie 13. pričom napínacie kotúče 12 sa nachádzajú v Šikmej polohe vzhľadom na smer transportu T. Uhol Šikmého nastavenia napínacích kotúčov 22 is v rozmedzí od 2° do 20°, najmä vSak 15°.The two layers 21 and 22 of the wrapping film 12 are conveyed in the direction of transport T from the tensioning device 21a. It consists of one upper and one lower tensioning disc 26, which roll on each other. The plane of rotation of the two tensioning disks 22 i perpendicular to the plane of the wrapping film 13, wherein the tensioning disks 12 are in an oblique position relative to the transport direction T. The angle of inclination of the tensioning disks 22 is in the range of 2 ° to 20 °, especially 15 °. .

Za napínacím zariadením 24 sú obe vrstvy 21 a 22 obalovej fólie 12 privádzané medzi oba remene 2Z, ktoré s predpätlm ohiehajú okolo vratných kladiek 22- Remene 27 sú prostredníctvom prítlačných líSt 22/ upravených medzi susednými vratnými kladkami 22/ vzájomne kĺzne pritláčané, súčasne s medzi nimi Ba vrstvami 21 a 22 obalovej fólie 12 byť prostredníctvom tu neznázorneného pružným prítlakom vzájemne pritláčané Downstream of the tensioning device 24, both layers 21 and 22 of the wrapping film 12 are fed between the two belts 2Z, which bend about the deflection rollers 22 with a pre-tension. The belts 27 are pushed relative to one another by means of thrust strips 22. By means of the layers 21 and 22 of the wrapping foil 12, they can be pressed against each other by means of a flexible pressure (not shown here)

tlaku umožňuje nastavenie prítlačných nachádzajúcimi liSty 22 môžu pôsobi aceho prítlačnéhoThe pressure can be adjusted by means of the pressure strips 22 which can be applied

Prítlačné uchytenia Variabilita líSt 22 PreThrust anchors Variable rail 22 For

Použitie prlsluSných dvoch, v rovnobežných Synchronizácia remeňov vzájomne zabierajúcich rôzne druhy fólii, resp. ich hrúbky, prítlačných líSt 22 Js výhodné najmä u rovinách obiehajúcich párov remeňov 27The use of the corresponding two, in parallel, synchronization of belts interlocking different types of foils, respectively. Their thicknesses, thrust bars 22 are advantageous especially in the planes of the circulating pairs of belts 27

2Z je zaistená prostredníctvom dvoch, ozubených kolies 22/ ktoré sú pripevnené na osách vratných kladiek 22/ nachádzajúcich sa na obr. 2 vľavo. Ozubené kolesá 22 sa nachádzajú na od predmetov 12 vzdialenejšej strane remeňov 2Z* Výmena vrstiev 21 a/alebo 22 obalovej fólie 12 môže byť v určitých prípadoch zjednodušená tým, že jeden z oboch remeňov 27, pracujúci ako transportné a prítlačné zariadenie, spoločne s prítlačnými lištami 29 a vratnými kladkami 28. môže byť od obalovej fólie 12 oddialený, resp. nadvihnutý.2Z is secured by means of two gears 22 (which are attached to the axles of the deflection rollers 22) shown in FIG. 2 on the left. The gears 22 are located on the far side of the belts 2Z from the objects 12. The replacement of the layers 21 and / or 22 of the wrapping film 12 can in some cases be simplified by one of the two belts 27 acting as a transport and presser together with the presser 29 and the deflection rollers 28 may be separated from the packaging film 12, respectively. lifted.

Relatívne bližšie k miestu zavádzania vrstiev 21 a 22. obalovej fólie 12 medzi remene 2Z# sa nachádza deliaci-zváračí kotúč 1Z a protiľahlý kotúč 1&# ktorý je na vonkajšom povrchu opatrený čiastočne pružnou vrstvou 12.· Ako je z obr. 2 patrné, spojnica osí otáčania oboch kotúčov prebieha kolmo na rovinu obalovej fólie 12# takže obalová fólia 12 je z tejto roviny v pokiaľ možno najmenšej miere odchyľovaná. Ako bolo už uvedené, deliaci-zváračí kotúč 1Z je určitou prítlačnou silou pritláčaný k protiľahlému kotúču 12# ktorý je uložený pevne. Zariadenie na pritláčanie deliaceho-zváracieho kotúča 1Z nie je bližšie znázornené, ale môže obsahovať pružinový prvok a elektromagnetický pohon. V stykovej oblasti 32 deliaceho-zváracieho kotúča 17 a protiľahlého kotúča 18. ako je zrejmé aj z obr. 2, dochádza prostredníctvom prítlačnej sily pôsobiacej na deliaci-zvárací kotúč 1Z na jeho čiastočné zatlačenie do povrchu protiľahlého kotúča 12, tvoreného pružnou vrstvou 12.·Relatively closer to the point of introduction of the layers 21 and 22 of the wrapping film 12 between the belts 2Z # there is a separating-roll 1Z and an opposing roll 1 '# which is provided on the outer surface with a partially elastic layer 12. As shown in FIG. 2, the axis of rotation of the two rolls extends perpendicularly to the plane of the wrapping film 12 # so that the wrapping film 12 is deflected as little as possible from this plane. As already mentioned, the splitting disc 1Z is pressed by a certain pressing force against the opposing disc 12 # which is fixedly mounted. The apparatus for pressing the separating-welding disc 1Z is not illustrated in detail, but may comprise a spring element and an electromagnetic drive. In the contact region 32 of the separating-welding disc 17 and the opposing disc 18, as can also be seen from FIG. 2, by means of a pressing force acting on the separating-welding disc 1Z, it is partially pressed into the surface of the opposing disc 12 formed by the elastic layer 12. ·

Na strane deliaceho-zváracieho kotúča 17. odvrátenej od balených predmetov 12# je čiarkované vyznačené obrevné zariadenie 22# ktoré bude ešte ďalej podrobnejšie opísané.On the side of the separating-welding disc 17 facing away from the packaged articles 12 #, there is a dashed marked apparating device 22 #, which will be described in more detail below.

V mieste deliaceho-zváracieho kotúča 17 a protiľahlého kotúča 12 nie sú bližšie znázornené# ale môžu byť realizované jednoduchým spôsobom# pričom je výhodné# keď sú oba kotúč 17 a 12 poháňané synchónne# napríklad spoločným pohonom, a tak nedocházda k prekĺznuťiu medzi oboma vrstvami 21 a 22 obalovej fólie 12· Takisko prípadnému vzájomnému predpätiu oboch práve zvarených vrstiev 21 a 22. obalovej fólie 12 ea môže zabrániť aspoň čiastočným oddialením remeňov 2Z v bllzkosi stykovej oblasti 22·At the point of the splitting disc 17 and the opposing disc 12, they are not shown in detail but can be realized in a simple manner # and it is advantageous # if the two discs 17 and 12 are driven synchronously # for example by co-drive. and 22 of the wrapping film 12 ' Thus, any possible biasing of the two just welded layers 21 and 22 of the wrapping film 12 ea can prevent at least partial spacing of the belts 2Z in the vicinity of the contact area 22 '.

Na obr. 3 je znázornený rez Btykovou oblasťou 22, pričom rovina rezu prebieha kolmo na smer transportu T. Z vyobrazenia je zrejmé, že deliaci-zvárací kotúč UZ má v axiálnom profile zaoblené hrany. Dva axiálne prebiehajúce zváracie úseky 25 uzatvárajú deliacu oblaBť 25, ktorú v príkladnom vyhotovení tvorí Špicatý trojuholníkový obvodový výstupok 2Z, ktorý spôsobuje oddeľovanie íólie. Zváracie ÚBeky 25 prechádzajú s pomerne veľkým zaoblením do strán deliaceho-zváracieho kotúča UZ· Priemer deliaceho-zváracieho kotúča UZ môže byť napríklad 120 mm.In FIG. 3 shows a section through the Byte region 22, the plane of the section being perpendicular to the transport direction T. It can be seen from the figure that the separating-welding disc US has rounded edges in the axial profile. The two axially extending welding sections 25 enclose the dividing area 25, which in the exemplary embodiment is formed by a pointed triangular circumferential projection 2Z which causes the separation of the ellia. The welding section 25 passes with a relatively large curvature to the sides of the UZ-cutting disc. The diameter of the UZ-cutting disc may be, for example, 120 mm.

Protiľahlý kotúč US sa skladá z nosného kotúča 22 zhotoveného z kovu, na ktorého obvode je upravený prstenec 4Q s pravouhlým prierezom, zhotovený z čiastočne pružného materiálu. Prstenec 45 môže byť na protiľahlý kotúč US pripevnený mechanicky a/alebo napríklad prilepením. Na stranách nosného kotúča 22 sú s presahom pripevnené pridržovacie kotúče 4U, ktoré predovšetkým zabrahujú axiálnemu vychyľovaniu prstenca 40 z nosného kotúča 22· Kotúče 4U takisto bránia ploSnému stlačeniu prstenca deliaceho-zváracieho kotúča UZ· V profil prstenca 40 v podstate priamy, teda rovnobežný so zváracím úsekom 25· väčSiemu roztiahnutiu, resp. 40 spôsobenému pritlačením stykovej oblasti 22 je axiálnyThe opposing disc US consists of a support disc 22 made of metal on the periphery of which a rectangular-shaped ring 40 made of a partially resilient material is provided. The ring 45 may be mechanically and / or glued to the opposing disc US. Retaining discs 4U are secured to the sides of the support disc 22, which in particular prevent axial deflection of the ring 40 from the support disc 22. The discs 4U also prevent the flat compression of the separating-welding disc UZ. section 25 · greater expansion, respectively. 40 caused by pressing the contact region 22 is axial

Na obr. 4 je znázornený deliaci-zvárací kotúč UZ, ktorý je pri činnosti pritláčaný na protiľahlý kotúč US, resp. prstenec 40. do ktorého je v radiálnom smere zatláčaný. Znázornené je pritlačenie s relatívne veľkým tlakom, a tak deliaci-zvárací kotúč 17 jednako svojou deliacou oblasťou 25, ale aj oboma zváracími úsekmi 25, úplne doľahne na vonkajSÍ obvod pružnej vrstvy 19 protiľahlého kotúča US, najmä častí zaoblených prechodov k postranným plochám deliaceho-zváracieho kotúča UZ· Tým je prstenec 45 stláčaný a zčasti vytláčaný do strán, pričom v dôsledku svojej čiastočnej pružnosti, resp. zvolenej tvrdosti doliehajúceho deliaceho-zváracieho kotúča UZ, tak poskytuje dostatočný odpor na vyvinutie potrebného takú na obe zvárané vrstvy 21 a 22 obalovej fólie U2·In FIG. 4 shows a splitting-welding disc US which is pressed against the opposing disc US and FIG. a ring 40 into which it is pressed in the radial direction. A relatively high pressure is shown, and so the cutting-off disc 17, both by its cutting region 25 and by the two welding sections 25, fully abuts the outer periphery of the resilient layer 19 of the opposing disc US, in particular the portions of rounded transitions. As a result, the ring 45 is compressed and partially extruded to the sides. of the selected hardness of the adjoining separating-welding roll UZ, thus providing sufficient resistance to develop the necessary such for both the welded layers 21 and 22 of the packaging film U2.

Na obr. 5 je v zjednodušenom reze, kolmom na rovinu obalovej fólie 13. znázornený deliaci-zvárací kotúč IZ s ohrevom jeho uchytenia a pohon. Deliaci-zvárací kotúč IZ j® v podstate plochý kotúč, ktorý je pripevnený na os 42· Os 42 j® uložená v ložisku 44. zasadenom do úchytu 45» ktorý v prípade potreby, s cieľom nastaviť alebo vykývnúť deliaci-zvárací kotúč 1Ζ» môže byť uchytený pohyblivo. Na druhom konci osi 42 je prichytený hnací kotúč 46. ktorý ja napríklad prostredníctvom remeňa spojený s tu bližšie neznázorneným pohonom. Vychýlením úchytu 45. j® nastavovaný prítlačný tlak deliaceho-zváracieho kotúča 1Z·In FIG. 5 is a simplified cross-sectional view, perpendicular to the plane of the wrapping film 13, of a separating-welding disc 12 with heating of its mounting and drive. The splitting-welding disc IZ is a substantially flat disc which is fixed to the axis 42 · The axis 42 is mounted in a bearing 44 fitted in the gripper 45 »which, if necessary, can adjust or swivel the splitting-welding disc 1Ζ» be attached movably. At the other end of the axis 42, a drive disk 46 is attached which, for example, is connected to a drive (not shown) by means of a belt. Adjustable clamping pressure of the cutting disc 1Z ·

Na odvrátenej strane deliaceho-zváracieho kotúča iZ od predmetu 12 je úchyt 45 vytvorený v tvare príruby 4Ζ» na ktorej je pripevnené ohrievacie zariadenie 45» vytvorené v tvare obvodových, do špirály tvarovaných rúrok vykurovacieho telesa 49. Príruba 47 je od deliaceho-zváraciaho kotúča 1Z oddelená len veľmi úzkou vzduchovou štrbinou, takže prenosová cesta ohrevu na deliaci-zváračí kotúč 17 je veľmi krátka, s pokiaľ možno najmenšími teplotnými strátami. Na obr. 5 je znázornené zvláštne vyhotovenie deliaceho-zváracieho kotúča ' 17. ktorý má v oblasti príruby 47 vytvorené obvodové vybranie, ktoré preberá teplo. Týmto spôsobom sa dosiahne podstatné zlepšenie prenosu tepla z rúrkového vykurovacieho telesa 45» resp. z príruby 4Z na deliaci-zváračí kotúč IZPríruba 4Ζ» okrem tohto že slúži na prichytenie rúrok vykurovacieho telesa 47. takisto zaisťuj rovnomerné rozdelenie a prenos tepla na deliaci-zváračí kotúč IZ- Vysoká presnosť pri zhotovení úzkej vzduchovej štrbiny medzi prírubou 4Z a bokom deliaceho-zváracieho kotúča IZ sa netýka .rúrkového vykurovacieho telesa 42., ktoré je pri údržbe a/alebo oprave voľne prístupné. Na vrchnom vonkajšom konci príruby 4Z je upravený teplotný senzor 51. ktorý slúži na zaznamenanie údajov o teplote príruby 47 a tým nepriamo i teplote deliaceho-zváracieho kotúča IZ- Teplotný senzor 51 môže byť Bpojený s tu bližšie neznázorneným ovládaním rúrkového zariadenia 45» ktoré udržuje stanovenú, resp. konštantnú teplotu v požadovanom rozmedzí.On the far side of the separating-welding disc 1Z from the object 12, the flange 45 is formed in the form of a flange 4Ζ »on which a heater 45» formed in the form of circumferentially spiral-shaped tubes of the heater 49 is mounted. The flange 47 is away from the separating-welding disc 1Z. separated by only a very narrow air gap, so that the heat transfer path to the separating-welding disc 17 is very short, with as little temperature losses as possible. In FIG. 5 shows a special embodiment of a separating-welding disc 17 having a peripheral recess in the region of the flange 47, which receives heat. In this way, a significant improvement in the heat transfer from the tubular radiator 45 ' from flange 4Z to splitter-welding disc IZFlange 4Ζ »in addition to being used to attach the heater tubes 47 also to ensure even heat distribution and heat transfer to the splitter-welding disc IZ- The welding disk IZ does not refer to a tubular heater 42 which is freely accessible for maintenance and / or repair purposes. A temperature sensor 51 is provided at the upper outer end of the flange 4Z, which serves to record flange temperature data 47 and thereby indirectly the temperature of the splitting disc IZ. The temperature sensor 51 may be coupled to control of the tubular device 45 ' , respectively. constant temperature in the desired range.

Z obr. 5 je takisto zrejmé, že úchyt 45 deliaceho-zváracieho kotúča 1Z nepresahuje cez príslušný zvárací úsek 22* Od predmetu 12 je deliaci-zvárací kotúč 17 oddelený len prostredníctvom tu neznázorneného remeňa 27. ktorý by mal byť pokiaľ možno najužší.FIG. 5, it is also apparent that the gripper 45 of the separating-welder 18 does not extend beyond the respective welding section 22. From the object 12, the separating-welder 17 is separated only by the belt 27 not shown here, which should be as narrow as possible.

Predmety 12 určené na balenie sú známym spôsobom umiestené medzi vrstvami 21 e 22 obalovej fólie 12· Obalová fólia 13, v tvare z jednej strany otvoreného rukáva tak obsahuje do nej vložený predmet 12 z jednej strany, zatiaľ čo na druhej strane je otvorená, s presahujúcimi okrajmi cez balený predmet 12. Zváracie zariadenie 22 by malo byť umiestené pokiaľ možno najbližšie k balenému predmetu 12· Prostredníctvom napínacieho zariadenia reep. šikmo v Bmere transportu T umiesteného napínacieho kotúča 22 je obalová fólia 12 napnutá na balenom predmete 12. Následne sú obe vrstvy 21 a 22 obalovej fólie 12 dôsledkom Pôsobiaceho pritlaku remeňov 2Z zachytené, v oblasti prítlačných líšt 29 vzájomne stlačené, a vedené zváracím zariadením 20. Po oboch stranách stykovej oblasti 22/ nachádzajúcej sa medzi deliacim-zváraclm kotúčom 1Z a priľahlým kotúčom 12* v ktorej dochádza k zvareniu a oddeleniu presahov 22 obalovej íólie 13, obiehajú dva páry remeňov 2Z- Ohriaty deliaci-zváračí kotúč 1Z pri pôsobení väčšieho tlaku pritláča vrstvy 21 a 22 obalovej íólie 13 na protiľahlú, čiastočne pružnú povrchovú plochu protiľahlého kotúča 12* pričom v dôsledku kontaktu obalovej fólie 13 s deliacim-zváraclm kotúčom 1Z dochádza k jej ohrevu. Zvláštne vyhotovenie axiálneho profilu deliaceho-zváracieho kotúča 1Z bo stredovo umiesteným obvodovým výstupkom 2Z a obojstranne ohraničenými zváracími úsekmi 22* umožňuje zvariť vrBtvy 21 a 22 obalovej fólie 12 v rovnakej širke, ako je šírka deliaceho-zváracieho kotúča 1Z a súčasne oddeliť presahy 22 obalovej fólie 13 prostredníctvom obvodového výstupku 2Z- Za stykovou oblasťou 32 je obalová fólia 12 prostredníctvom remeňov 27 pôsobiacich stálym pritlakom vyťahovaná zo zváracieho zariadenia 22* Na relatívne dlhej dráhe môžu byť zvarené vrstvy 21 a 22 obalovej fólie 12 ochladzované, pričom v dôsledku ich vedenia remeňmi 2Z sa zabráni vzniku nežiaducich zaťažení, poprípade vzniku napätia v obalovej fólii 12· Po zvarení vo zváracom zariadení 22 je otvorená strana fóliového rukáva uzavretá pevným zvarovým švom, z ktorého je odstránený nepotrebný presah 22· V dôsledku vzájomného etlačenia vrstiev 21 a 22 obalovej fólie 12 sú prípadné prehyby vyhladené do podoby hladkej plochy. Chladenie remeňov 2Z môže byť urobené jednak prostredníctvom kontaktu s prítlačnými lištami 29 a jednak prostredníctvom ich prechodu čerstvým vzduchom. Ďalšia možnosť chladenia spočíva v nasávaní vzduchu.The articles 12 to be packaged are placed in a known manner between the layers 21 and 22 of the wrapping film 12. The wrapping film 13, in the form of an open sleeve from one side, thus contains an object 12 inserted therein from one side while open on the other side. The welding device 22 should be positioned as close as possible to the wrapped object 12 by means of a tensioning device reep. The wrapping film 12 is stretched on the wrapped article 12 at an angle to the conveying direction T of the placed tensioning disc 22. Subsequently, both layers 21 and 22 of the wrapping film 12 are captured by the pressure applied by the belts 2Z, pressed together in the area of the pressing bars 29 and guided by the welding device 20. Two pairs of belts 2Z circulate on both sides of the contact zone 22 / located between the splitting disc 1Z and the adjacent disc 12 * in which the overlaps 22 of the wrapping film 13 are welded and separated. the layers 21 and 22 of the wrapping film 13 on the opposing, partially resilient surface of the opposing roll 12 *, whereby it is heated as a result of contact of the wrapping film 13 with the separating roll 12. The special design of the axial profile of the separating-roll 1Z or the centrally located circumferential projection 2Z and the two-sided welding sections 22 * allows welding the layers 21 and 22 of the wrapping film 12 to the same width as the width of the separating-welding roll 1Z and simultaneously 13 by means of a peripheral projection 2Z. Beyond the contact area 32, the wrapping film 12 is pulled out of the welding device 22 by means of constant pressure belts 27. * On a relatively long path, the welded layers 21 and 22 of the wrapping film 12 can be cooled. prevents unwanted loads or stresses in the packaging film 12 · After welding in the welding device 22, the open side of the foil sleeve is closed by a solid weld seam from which the unnecessary overlap 22 is removed. The crease film 12, if any, is smoothed to a smooth surface. Cooling of the belts 20 can be accomplished both by contact with the pressure strips 29 and by passing them through fresh air. Another possibility of cooling lies in air intake.

Claims (14)

1. Zváracie zariadenie, najmä ako časť baliaceho stroja (11), na balenie predmetov (12), ktorým sú vo viacero vrstvách (21, 22) zvárané zvariteľné kontinuálna fólie (13) v tvare z jednej strany otvoreného rukáva, ktorý v pozdĺžnom smere obaľuje a/alebo prečnieva cez okraje obaľovaných predmetov, pričom zváracie zariadenie (20) obsahuje rotujúci zohrievaný deliaci-zváračí kotúč (17) na zváranie vrstiev (21, 22) obalovej fólie (13) a na oddelenie presahov (23) a aspofí jeden, v stykovej oblasti (32) na deliaci-zváračí kotúč (17) doliehajúci a spoločne s nim sa otáčajúci protiľahlý kotúč (18), vyznačujúci sa tým, že deliaci-zváraci kotúč (1-7) * je tvrdý a/alebo tuhý, zatiaľ čo protiľahlý kotúč (18) je v tejto stykovej oblasti (32) čiastoče pružný.Welding device, in particular as part of a packaging machine (11), for wrapping articles (12) by means of which in a plurality of layers (21, 22) weldable continuous foils (13) are welded in the form of an open sleeve from one side. envelopes and / or protrudes over the edges of the coated articles, the welding device (20) comprising a rotating heated separating-welding roll (17) for welding the layers (21, 22) of the wrapping film (13) and separating the overlap (23) and at least one, in the abutment region (32) on the separating-welding disc (17) adjoining and rotating with the opposing disc (18), characterized in that the separating-welding disc (1-7) * is hard and / or rigid, while the counter disc (18) being partially resilient in this contact region (32). 2. Zváracie zariadenie podľa nároku 1,vyznačuj úce ea tým, že protiľahlý kotúč (18) je v stykovej oblasti (32) opatrený vrstvou (19) aspofí z časti pružného materiálu,, najmä materiálu obsahujúceho fluór, ako je íluórelastomér a pod., pričom vrstva (19) z časti pružného materiálu tvorí na protiľahlom kotúči (18) prstenec (40) s dostatočnou hrúbkou z hľadiska čiastočnej pružnosti.Welding device according to claim 1, characterized in that the opposing roll (18) is provided in the contact region (32) with a layer (19) of at least a part of a resilient material, in particular a fluorine-containing material such as fluoroplastomer and the like. wherein the layer (19) of part of the resilient material forms a ring (40) of sufficient thickness for partial resilience on the opposing disk (18). 3. Zváracie zariadenie podľa nároku 2, vyznačujúce sa tým, že z časti pružný materiál tvorí vrstvu (19), ktorej hrúbka je od 1 do 10 mm, najmä potom približne 5 mm.Welding device according to claim 2, characterized in that the resilient material forms in part a layer (19) whose thickness is from 1 to 10 mm, in particular approximately 5 mm. 4. Zváracie zariadenie podľa niektorého z predchádzajúcich nárokov, vyznačujúce sa tým, že tvrdosť vrstvy (19) z časti pružného materiálu je v rozmedzí od 50 do 150 Shore, najmä potom približne 75 Shore.Welding device according to one of the preceding claims, characterized in that the hardness of the layer (19) of a part of the resilient material is in the range of 50 to 150 Shore, in particular approximately 75 Shore. 5. Zváracie zariadenie podľa aspofí jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že vrstva (19) protiľahlého kotúča (18) je aspoň tak široká ako je šírka stykovej oblasti (32) v deliacom-zváracom kotúči (17), pričom čiastočne pružná vrstva (19) sa rozprestiera cez celý vonkajší obvod protiľahlého kotúča (18).Welding device according to at least one of the preceding claims, characterized in that the layer (19) of the opposing disc (18) is at least as wide as the width of the contact area (32) in the separating-welding disc (17), the partially flexible layer. (19) extends over the entire outer periphery of the opposite disc (18). 6. Zváracie zariadenie podľa aspoň jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že deliaci-zvárací kotúč (17) je v podstate zhotovený z kovu, pričom je opatrený vrstvou proti priľnutiu obalovej fólie (13), najmä tenkým povlakom, pričom tento povlak je zhotovený z polytetrafluóretylénu.Welding device according to at least one of the preceding claims, characterized in that the separating-welding disc (17) is essentially made of metal and is provided with an anti-adhesion layer of the packaging film (13), in particular a thin coating, made of polytetrafluoroethylene. 7. Zváracie zariadenie podľa aspoň jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že axiálny profil vonkajšieho obvodu deliaceho-zváracieho kotúča (17) vykazuje najmenej jednu deliacu oblasť (36) b obvodovým výstupkom (37) urobeným v tvare ostria, a aspoň jeden zvárací úsek (35), ktorý je širší než obvodový výstupok (37) a ktorý nadväzuje priamo na deliacu oblasť (36).Welding device according to at least one of the preceding claims, characterized in that the axial profile of the outer periphery of the separating-welding disc (17) has at least one separating region (36) b by a peripheral projection (37) in the shape of a blade. a section (35) that is wider than the circumferential projection (37) and which adjoins directly to the partition area (36). 8. Zváracie zariadenie podľa nároku 7, vyznačujúce sa tým, že zvárací úsek (35) je usporiadaný na oboch stranách deliacej oblasti (36) na ktorú priamo nadväzuje, pričom axiálny profil deliaceho-zváracieho kotúča (17) je v podstate symetrický vzhľadom na obvodový výstupok (37), nachádzajúci sa v deliacej oblasti (36).Welding device according to claim 7, characterized in that the welding section (35) is arranged on both sides of the dividing area (36) to which it is directly connected, wherein the axial profile of the dividing-welding disc (17) is substantially symmetrical with respect to the circumferential. a protrusion (37) located in the partition area (36). 9. Zváracie zariadenie podľa aspoň jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že k deliacemuzváraciemu kotúču (17) je priradené externé, pevne umiestené ohrievacie zariadenie (33), ktoré zohrieva deliaci-zváračí kotúč (17) z jednej strany a je vzhľadom k deliacemu-zváraciemu kotúču (17) upravené v nepatrnom odstupe.Welding device according to at least one of the preceding claims, characterized in that an external, fixed heating device (33) is attached to the separating disc (17), which heats the separating-welding disc (17) from one side and is relative to a separating-welding disc (17) provided at a slight distance. 10. Zváracie zariadenie podľa aspoň jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že zváracie zariadenie (20) obsahuje transportné zariadenie na zachytenie a/alebo vedenie obalovej fólie (13) pred a/alebo za deliacim-zváracím kotúčom (17), ale aj v oblasti oddeľovania, pričom ako prostriedok na vedenie a/alebo zachytenie obalovej fólie (13) slúžia najmenej dva, nad sebou obiehajúce remene (27).Welding device according to at least one of the preceding claims, characterized in that the welding device (20) comprises a transport device for catching and / or guiding the packaging film (13) upstream and / or downstream of the separating-welding disc (17), but also in the separation area, wherein at least two belts (27) running one above the other serve as a means for guiding and / or catching the packaging film (13). 11. Zváracie zariadenie podľa nároku 10, vyznačujúce sa tým, že zváracie zariadenie (20) je opatrené dvoma pármi nad Bebou obiehajúcimi remeňmi (27), ktoré sú usporiadané na oboch stranách deliaceho-zváracieho kotúča (17).Welding device according to claim 10, characterized in that the welding device (20) is provided with two pairs of belts (27) running over Beba, which are arranged on both sides of the separating-welding disc (17). 12. Zváracie zariadenie podľa aspoň jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že zváracie zariadenie (20) je opatrené prítlačným zariadením na vzájomné stlačenie vrBtiev (21, 22) obalovej fólie (13), nachádzajúcim sa v stykovej oblasti (32) zvárania, od ktorej sa rozprestiera v ďaléom úseku v smere transportu T.Welding device according to at least one of the preceding claims, characterized in that the welding device (20) is provided with a pressing device for pressing together the layers (21, 22) of the packaging film (13) located in the welding contact area (32). from which it extends in the next section in the direction of transport T. 13. Zváracie zariadenie podľa nároku 12, vyznačujúce sa tým, že prítlačné zariadenie obsahuje v nepatrnom odstupe a vzájomne nad sebou obiehajúce dva páry remeňov (27), ktoré sa rozprestierajú v smere transportu T v ďal&om úseku za, ale najmä pred stykovou oblasťou (32) zvárania.Welding device according to claim 12, characterized in that the pressing device comprises two pairs of belts (27) spaced slightly apart and spaced one above the other, extending in the transport section T in a further section beyond, but in particular in front of the contact area (32). ) welding. 14. Zváracie zariadenie podľa aspoň jedného z predchádzajúcich nárokov, vyznačujúce sa tým, že za stykovou oblasťou (32) zvárania je v smere transportu T usporiadané oddeľovacie zariadenie na oddeľovanie presahov (23) obalovej fólie (13), pričom oddeľovacie zariadenie je urobené v tvare klina a/alebo čepele.Welding device according to at least one of the preceding claims, characterized in that a separating device for separating the overlap (23) of the wrapping foil (13) is arranged downstream of the welding contact area (32) in the transport direction T, the separating device being shaped. wedges and / or blades.
SK157-2000A 1999-02-11 2000-02-03 Apparatus for welding weldable films SK1572000A3 (en)

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EP1027981A3 (en) 2001-07-11
EP1027981A2 (en) 2000-08-16

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