DE69823349T2 - Hand-operated electric welder with removable heat-resistant cover foil - Google Patents

Hand-operated electric welder with removable heat-resistant cover foil Download PDF

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Publication number
DE69823349T2
DE69823349T2 DE69823349T DE69823349T DE69823349T2 DE 69823349 T2 DE69823349 T2 DE 69823349T2 DE 69823349 T DE69823349 T DE 69823349T DE 69823349 T DE69823349 T DE 69823349T DE 69823349 T2 DE69823349 T2 DE 69823349T2
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DE
Germany
Prior art keywords
heat
housing
insulating base
frame
resistant cover
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.)
Expired - Fee Related
Application number
DE69823349T
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German (de)
Other versions
DE69823349D1 (en
Inventor
Ammy Hsi Chih Town Chou
Richard Hsi Chih Town Chang
Mario B. Accumanno
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.)
Welcome Co Ltd
Original Assignee
Welcome Co Ltd
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Filing date
Publication date
Application filed by Welcome Co Ltd filed Critical Welcome Co Ltd
Priority claimed from EP98307464A external-priority patent/EP0987093B1/en
Publication of DE69823349D1 publication Critical patent/DE69823349D1/en
Application granted granted Critical
Publication of DE69823349T2 publication Critical patent/DE69823349T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • 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
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • B29C65/223—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire comprising several heated wires
    • 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
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or 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
    • 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
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/8182—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 thermal insulating constructional aspects
    • B29C66/81821—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 thermal insulating constructional aspects of 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools
    • B29C66/8618—Hand-held tools being battery operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/146—Closing bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/148—Hand-operated members
    • 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
    • B29C66/8122—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 composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Landscapes

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

Description

Gebiet der ErfindungField of the invention

Die vorliegende Erfindung bezieht sich auf eine elektrische Dichtvorrichtung und insbesondere auf ein handbetriebenes elektrisches Schweißgerät mit einer abnehmbaren hitzeresistenten Abdeckfolie, um den elektrischen Heizdraht zu schützen.The The present invention relates to an electric sealing device and more particularly to a hand-operated electric welder having a Removable heat-resistant cover film to the electric heating wire to protect.

Hintergrund der ErfindungBackground of the invention

Eine Vielzahl von handbetätigten elektrischen Schweißvorrichtungen ist offenbart worden und auf dem Markt erschienen. Beispiele solcher Vorrichtungen werden im chinesischen Gebrauchsmuster Nr. 91041 mit dem Titel "Verbesserte Struktur einer Schweißvorrichtung", im US-Patent Nr. 5,142,123 mit dem Titel "Elektrischer Schweißer, der durch internen Batteriesatz oder externen Wechselstromadapter betreibbar ist", und im französischen Patent Nr. FR 2040757 offenbart.A Variety of hand-operated electric welding devices has been disclosed and appeared on the market. Examples of such Devices are in the Chinese utility model no. 91041 with the title "Improved Structure of a Welding Device "in U.S. Patent No. 5,142,123 entitled "Electric Welder, by internal battery pack or external AC adapter is operable ", and in the French patent No. FR 2040757.

Diese elektrischen Schweißvorrichtungen beinhalten üblicherweise ein Gehäuse, eine im Gehäuse montierte Heizeinheit und eine schwenkbar am Gehäuse angebrachte Presseneinheit, welche gegen die Heizeinheit wirkt. Die Heizeinheit beinhaltet einen elektrischen Heizdraht. Wenn ein elektrischer Strom durch den elektrischen Heizdraht hindurchgeht, erzeugt der elektrische Heizdraht Wärme zum Verschweißen von Plastiktüten. Um den elektrischen Heizdraht vor geschmolzenem Plastikmaterial zu schützen, deckt eine hitzeresistente Abdeckfolie den elektrischen Heizdraht ab. Weil die hitzeresistente Abdeckfolie nicht oder nur mit Schwierigkeiten ersetzbar ist, kann die gesamte elektrische Schweißvorrichtung nutzlos werden, falls die hitzeresistente Abdeckfolie beschädigt wird.These Electric welding devices usually include a housing, one in the housing mounted heating unit and a pivotally mounted on the housing press unit, which acts against the heating unit. The heating unit includes a electric heating wire. When an electric current through the electric Passing through the heating wire, the electric heating wire generates heat for weld together of plastic bags. To close the electric heating wire in front of molten plastic material protect, a heat-resistant cover film covers the electric heating wire from. Because the heat-resistant cover or not with difficulty can be replaced, the entire electric welding device become useless if the heat-resistant cover film is damaged.

Es besteht ein Bedarf an einem elektrischen Heizschweißer, welcher das vorgenannte Problem eliminiert, handbetätigt ist und sicher in der Anwendung ist.It There is a need for an electric heat welder, which eliminates the above problem, is manually operated and safe in the Application is.

Zusammenfassung der bevorzugten AusführungsformSummary the preferred embodiment

Gemäß der vorliegenden Erfindung wird ein handbetätigter elektrischer Schweißer bereitgestellt, der ein Gehäuse, eine im Gehäuse montierte Heizeinheit, eine hitzeresistente Abdeckfolie und eine am Gehäuse schwenkbar angebrachte Presseneinheit, die gegen die Heizeinheit wirkt, beinhaltet. Die Heizeinheit beinhaltet eine wärmeisolierende Basis mit einem vorragenden Bereich und einem auf dem vorragenden Bereich der wärmeisolierenden Basis montierten elektrischen Heizdraht. Die hitzeresistente Abdeckfolie ist innerhalb eines Rahmens gehalten und deckt zumindest einen Bereich des elektrischen Heizdrahts ab. Der Rahmen beinhaltet Rückhaltemittel, welche die hitzeresistente Abdeckfolie beweglich am vorragenden Bereich sichern, so dass die Abdeckfolie zu ihrem Austauschen entfernt werden kann, ohne die Presseneinheit vom Gehäuse zu trennen.According to the present Invention becomes a hand-operated electric welder provided, a housing, one in the housing Mounted heating unit, a heat-resistant cover and an am casing pivotally mounted press unit, which against the heating unit acts, includes. The heating unit includes a heat-insulating Base with a protruding area and one on the protruding Area of heat-insulating Base mounted electric heating wire. The heat-resistant cover film is kept within a frame and covers at least one area of the electric heating wire. The frame includes retention means, which the heat-resistant cover film movable on the projecting Secure the area so that the cover strip is removed for replacement can be without separating the press unit from the housing.

Das Rückhaltemittel kann mit dem vorragenden Bereich der Basis oder dem Gehäuse in Eingriff sein.The Retention means may be engaged with the protruding portion of the base or housing.

Bei einer bevorzugten Ausführungsform ist die hitzeresistente Abdeckfolie ein aus Polytetrafluorethylen (TeflonTM) oder einem ähnlichem Material hergestelltes Siebelement.In a preferred embodiment, the heat-resistant cover film is a screen element made of polytetrafluoroethylene (Teflon ™ ) or a similar material.

Vorzugsweise ist der elektrische Heizdraht der Heizeinheit durch einen internen Batteriesatz, einen externen Wechselstromadapter oder eine Kombination der beiden, speisbar.Preferably is the electric heating wire of the heating unit through an internal Battery pack, an external AC adapter or a combination the two, feedable.

Bei bevorzugten Ausführungsformen sind die hitzeresistente Abdeckfolie und der Rahmen durch direktes Anbringen der hitzeresistenten Abdeckfolie am Rahmen, direktes Ausformen des Rahmens auf der hitzeresistenten Abdeckfolie oder Sichern der hitzeresistenten Abdeckfolie am Rahmen zwischen einem oberen Rahmengehäuse und unteren Rahmengehäuse auf dem Rahmen miteinander verbunden.at preferred embodiments are the heat-resistant cover film and the frame by direct Attaching the heat-resistant cover foil to the frame, direct shaping the frame on the heat-resistant cover or securing the Heat-resistant cover film on the frame between an upper frame housing and lower frame housing connected to each other on the frame.

Weil die hitzeresistente Abdeckfolie am Rahmen befestigt ist und der Rahmen abnehmbar an der Heizeinheit oder dem Gehäuse befestigt ist, ist die hitzeresistente Abdeckfolie bei Beschädigung austauschbar.Because the heat-resistant cover film is attached to the frame and the Frame removably attached to the heating unit or the housing is the heat-resistant Cover foil in case of damage interchangeable.

Bei bevorzugten Ausführungsformen beinhaltet jeder der vorgehenden elektrischen Schweißer eine Mehrzahl von elektrischen Heizdrähten, die an der wärmeisolierten Basis der Heizeinheit befestigt sind.at preferred embodiments Each of the previous electric welders includes one Plurality of electric heating wires, the on the thermally insulated Base of the heating unit are attached.

Gemäß noch einem weiteren Aspekt der vorliegenden Erfindung wird eine Polytetrafluorethylen-(TeflonTM)-Siebplatte oder anderes ähnliches Material, das zum Eingreifen in einem Rahmen, wie hier beschrieben, eingerichtet ist, vorgesehen.In yet another aspect of the present invention, there is provided a polytetrafluoroethylene (Teflon ™ ) sizing plate or other similar material adapted for engaging in a frame as described herein.

Gemäß einem zusätzlichen Aspekt der vorliegenden Erfindung ist die zeitweilige hitzeresistente Abdeckfolie dafür eingerichtet, zumindest partiell den elektrischen Heizdraht eines elektrischen Schweißers abzudecken. Die zeitweilige hitzeresistente Abdeckfolie ist vom elektrischen Heizdraht entfernbar, ohne den elektrischen Heizdraht zu beschädigen.According to one additional Aspect of the present invention is the temporary heat-resistant cover sheet set up for at least partially the electric heating wire of an electric welder cover. The temporary heat-resistant cover is from the electric heating wire removable, without the electric heating wire to damage.

Andere Aufgaben, Merkmale und Vorteile der vorliegenden Erfindung werden für Fachleute aus der folgenden detaillierten Beschreibung ersichtlich.Other Objects, features and advantages of the present invention for professionals from the following detailed description.

Kurze Beschreibung der ZeichnungenShort description the drawings

Die Erfindung kann leichter unter Bezugnahme auf die beigefügten Zeichnungen verstanden werden, in denen:The Invention may be more readily with reference to the accompanying drawings be understood, in which:

1 eine perspektivische Ansicht eines handbetätigten elektrischen Schweißers gemäß der vorliegenden Erfindung ist; 1 Fig. 12 is a perspective view of a manual electric welder according to the present invention;

2 eine Explosionsansicht der Heizeinheit für den handbetätigten elektrischen Schweißer gemäß der vorliegenden Erfindung ist; 2 an exploded view of the heating unit for the hand-operated electric welder according to the present invention;

3 eine alternative Form der hitzeisolierenden Basis gemäß der vorliegenden Erfindung zeigt; 3 shows an alternative form of the heat insulating base according to the present invention;

4 eine alternative Form des Rahmens und eine andere alternative Form der hitzeisolierenden Basis gemäß der vorliegenden Erfindung zeigt; 4 an alternative form of the frame and another alternative form of the heat insulating base according to the present invention;

5 eine andere alternative Form des Rahmens und seiner Positionierung auf den Frontabdeckplatten relativ zur hitzeisolierenden Basis gemäß der vorliegenden Erfindung zeigt; 5 Figure 4 shows another alternative form of the frame and its positioning on the front cover plates relative to the heat insulating base according to the present invention;

6 eine schematische Zeichnung ist, welche das Austauschen der hitzeresistenten Abdeckfolie erläutert; 6 is a schematic drawing which explains the replacement of the heat-resistant cover;

7 mehrfache elektrische Heizdrähte zeigt, die auf der hitzeisolierenden Basis von 3 gemäß der vorliegenden Erfindung angeordnet sind; 7 showing multiple electric heating wires placed on the heat insulating base of 3 arranged according to the present invention;

8 eine Explosionsansicht der Heizeinheit des elektrischen Heizschweißers gemäß einer alternativen Ausführungsform der vorliegenden Erfindung ist. 8th an exploded view of the heating unit of the electric heat welder according to an alternative embodiment of the present invention.

Gleiche Bezugszeichen beziehen sich bei den verschiedenen Ansichten der Zeichnungen auf gleiche Teile.Same Reference numerals refer to the different views of Drawings on the same parts.

Detaillierte Beschreibung der bevorzugten AusführungsformenDetailed description of the preferred embodiments

Unter Bezugnahme auf 1 und 2 beinhaltet ein handbetätigter elektrischer Heizschweißer gemäß der vorliegenden Erfindung allgemein ein Gehäuse 10, eine Heizeinheit 20 und eine Presseneinheit 30.With reference to 1 and 2 For example, a hand-operated electric heat welder according to the present invention generally includes a housing 10 , a heating unit 20 and a press unit 30 ,

Das Gehäuse 10 beinhaltet ein Aufnahmekammer 11, welche die Heizeinheit 20 und eine Batterie (nicht gezeigt), ein Paar Metallkontaktplatten 12, die in der Aufnahmekammer 11 an einem Ende für einen Kontakt mit der Batterie angebracht sind, einen in der Aufnahmekammer 11 zwischen den Metallkontaktplatten angebrachten Federhalter und eine Kompressionsfeder 14, die im Federhalter 13 gehaltert ist, aufnimmt. Das Gehäuse enthält auch eine Abdeckeinheit 15, welche die Aufnahmekammer 11 abdeckt. Die Abdeckeinheit 15 beinhaltet eine vordere Abdeckplatte 16, eine mittlere Abdeckplatte 17 und eine hintere Abdeckplatte 18.The housing 10 includes a receiving chamber 11 which the heating unit 20 and a battery (not shown), a pair of metal contact plates 12 in the reception room 11 attached at one end for contact with the battery, one in the receiving chamber 11 between the metal contact plates mounted spring holder and a compression spring 14 in the penholder 13 is held, picks up. The housing also contains a cover unit 15 which the receiving chamber 11 covers. The cover unit 15 includes a front cover plate 16 , a middle cover plate 17 and a rear cover plate 18 ,

Die Heizeinheit 20 beinhaltet eine hitzeisolierende Basis 21, einen elektrischen Heizdraht 22, ein Paar von metallischen Führungsplatten 23, eine hitzeresistente Abdeckfolie 24 und einen Rahmen 241. Die hitzeresistente Abdeckfolie 24 ist innerhalb des Rahmens 241 gehalten. Die hitzeisolierende Basis 21 beinhaltet einen vorragenden Bereich 211 in der Mitte, zwei koppelnde vertieften Bereiche 212 an zwei entgegengesetzten seitlichen Seiten und entgegengesetzte Unterkanten 215. Die metallischen Führungsplatten 23 sind an der hitzeisolierenden Basis 21 an zwei entgegengesetzten Orten befestigt. Der elektrische Heizdraht 22 ist am vorstehenden Bereich 211 der hitzeisolierenden Basis 21 angebracht und dort mittels der metallischen Führungsplatten 23 gesichert. Der Rahmen 241 ist um den vorragenden Bereich 211 der hitzeisolierenden Basis 21 montiert, um die hitzeresistente Abdeckfolie 24 auf den vorragenden Bereich 211 über den elektrischen Heizdraht 22 niederzuhalten. Der Rahmen 241 beinhaltet einen oberen Bereich 249, der darin definiert eine Öffnung 251 und eine Mehrzahl von sich abwärts erstreckenden Haken 242 hat. Der Rahmen 241 ist an der hitzeisolierenden Basis 21 durch Eingreifen der Haken 242 in die koppelnden vertieften Bereiche 212 gesichert. Bei einer alternativen Ausführungsform beinhaltet die hitzeisolierende Basis 21 eine Mehrzahl von sich aufwärts erstreckenden Haken 245. Bei dieser Ausführungsform ist der Rahmen 241 an der hitzeisolierenden Basis 21 durch Eingreifen der Haken 242 in die koppelnden vertieften Bereiche 212 gesichert. Bei einer alternativen Ausführungsform beinhaltet die hitzeisolierende Basis 21 eine Mehrzahl von sich aufwärts erstreckenden Haken 245. Bei dieser Ausführungsform ist der Rahmen 241 an der hitzeisolierenden Basis 21 durch Eingreifen der Haken 242 in eine Mehrzahl von auf der inneren Kante 253 des oberen Rahmenbereichs 249 des Rahmens 241 lokalisierten Vertiefungen 247 gesichert, wie in 8 gezeigt. Es versteht sich, dass der Rahmen 241 an der hitzeisolierenden Basis 21 auf eine Reihe von verschiedenen Weisen gesichert werden kann. Beispielsweise können Gewindehalter oder Schnapper vorgesehen sein, der Rahmen kann mit einem Gewinde versehen sein, der Rahmen kann am Gehäuse angelenkt sein, der Rahmen kann mit dem Gehäuse einstückig sein. Jegliches Verfahren des Sicherns des Rahmens 241 an der hitzeisolierenden Basis liegt im Schutzbereich der vorliegenden Erfindung. Bei der in 8 gezeigten Ausführungsform umfasst die hitzeisolierende Basis vorzugsweise einen geeigneten Kunststoff, insbesondere einen wärmeresistenten Kunststoff.The heating unit 20 includes a heat-insulating base 21 , an electric heating wire 22 , a pair of metallic guide plates 23 , a heat-resistant cover film 24 and a frame 241 , The heat-resistant cover film 24 is within the frame 241 held. The heat-insulating base 21 includes a prominent area 211 in the middle, two coupling recessed areas 212 on two opposite lateral sides and opposite lower edges 215 , The metallic guide plates 23 are on the heat-insulating base 21 attached in two opposite places. The electric heating wire 22 is at the prominent area 211 the heat-insulating base 21 attached and there by means of the metallic guide plates 23 secured. The frame 241 is around the projecting area 211 the heat-insulating base 21 mounted to the heat-resistant cover film 24 on the projecting area 211 over the electric heating wire 22 hold down. The frame 241 includes an upper area 249 That defines an opening in it 251 and a plurality of downwardly extending hooks 242 Has. The frame 241 is on the heat-insulating base 21 by engaging the hooks 242 into the coupling recessed areas 212 secured. In an alternative embodiment, the heat-insulating base includes 21 a plurality of upwardly extending hooks 245 , In this embodiment, the frame 241 on the heat-insulating base 21 by engaging the hooks 242 into the coupling recessed areas 212 secured. In an alternative embodiment, the heat-insulating base includes 21 a plurality of upwardly extending hooks 245 , In this embodiment, the frame 241 on the heat-insulating base 21 by engaging the hooks 242 in a plurality of on the inner edge 253 of the upper frame area 249 of the frame 241 localized wells 247 secured, as in 8th shown. It is understood that the frame 241 on the heat-insulating base 21 can be secured in a number of different ways. For example, threaded fastener or snapper may be provided, the frame may be threaded, the frame may be hinged to the housing, the frame may be integral with the housing. Any method of saving the frame 241 on the heat-insulating base is within the scope of the present invention. At the in 8th In the embodiment shown, the heat-insulating base preferably comprises a suitable plastic, in particular a heat-resistant plastic.

Die wärmeresistente Abdeckfolie 24 und der Rahmen können aneinander durch direktes Formen des Rahmens 241 auf der wärmeresistenten Abdeckfolie 24 oder durch Ankleben der wärmeresistenten Abdeckfolie 24 am Rahmen 241 unter Verwendung eines Adhäsivs befestigt werden. Der Rahmen 241 besteht vorzugsweise aus einem Kunststoff und kann direkt auf der wärmeresistenten Abdeckfolie 24 durch Spritzguss geformt werden.The heat-resistant cover film 24 and the frame can abut each other by directly shaping the frame 241 on the heat-resistant cover film 24 or by sticking the heat-resistant cover sheet 24 at the frame 241 be attached using an adhesive. The frame 241 preferably consists of a plastic and can directly on the heat-resistant cover 24 be molded by injection molding.

Der elektrische Heizdraht 22 kann in der Dicke variieren. Vorzugsweise variiert die Dicke des elektrischen Heizdrahts im Bereich von 0,10 mm bis 0,50 mm. Jedoch versteht sich, dass der elektrische Heizdraht 22 der vorliegenden Erfindung jegliche Dicke aufweisen kann.The electric heating wire 22 can vary in thickness. Preferably, the thickness of the electric heating wire varies in the range of 0.10 mm to 0.50 mm. However, it is understood that the electric heating wire 22 of the present invention may have any thickness.

Bei einer anderen bevorzugten Ausführungsform, wie in 7 gezeigt, wird eine Mehrzahl elektrischer Heizdrähte 25 verwendet. Die elektrischen Heizdrähte 25 sind auf dem vorstehenden Bereich der hitzeisolierenden Basis 21 montiert und dort durch die metallischen Führungsplatten 23 gesichert. Jegliche Anzahl elektrischer Heizdrähte 25 liegt im Schutzumfang der Erfindung.In another preferred embodiment, as in 7 is shown, a plurality of electrical heating wires 25 used. The electric heating wires 25 are on the projecting portion of the heat-insulating base 21 mounted and there by the metallic guide plates 23 secured. Any number of electrical heating wires 25 is within the scope of the invention.

Wiederum unter Bezugnahme auf 1 ist die Presseneinheit 30 schwenkbar mit einem Ende des Gehäuses 10 verbunden. Die Presseneinheit 30 beinhaltet einen wärmeisolierenden Block 31. Wenn die Presseneinheit 30 herunter gepresst wird, drückt der wärmeisolierende Block 31 auf die hitzeresistente Abdeckplatte 24 und gegen den elektrischen Heizdraht 22 und den vorragenden Bereich 211 der hitzeisolierenden Basis 21.Again with reference to 1 is the press unit 30 pivotable with one end of the housing 10 connected. The press unit 30 includes a heat-insulating block 31 , When the press unit 30 pressed down, presses the heat-insulating block 31 on the heat-resistant cover plate 24 and against the electric heating wire 22 and the projecting area 211 the heat-insulating base 21 ,

Unter Bezugnahme auf 6 sind beim Austauschen der hitzeresistenten Abdeckplatte die sich abwärts erstreckenden Haken 242 des Rahmens 241 nicht in Eingriff mit der hitzeisolierenden Basis 21. Die verwendete hitzeresistente Abdeckfolie wird dann vom Rahmen 241 entfernt und durch eine neue hitzeresistente Abdeckfolie 24 ersetzt. Der Rahmen 241 wird dann an der hitzeisolierenden Basis 21 befestigt, um die neue hitzeresistente Abdeckfolie 24 am vorragenden Bereich 211 der hitzeisolierenden Basis 21 und zumindest teilweise über dem elektrischen Heizdraht 22 zu sichern. Alternativ kann, wenn der Rahmen 241 an der Abdeckfolie 24 angeformt oder angeheftet ist, wodurch eine einzelne Einheit entsteht, die gesamte Einheit entfernt und durch einen neuen Rahmen 241 und eine neue Abdeckfolie 24 ersetzt werden.With reference to 6 when replacing the heat-resistant cover plate, the downwardly extending hooks 242 of the frame 241 not in engagement with the heat-insulating base 21 , The heat-resistant cover film used is then removed from the frame 241 removed and replaced with a new heat-resistant cover 24 replaced. The frame 241 is then on the heat-insulating base 21 attached to the new heat-resistant cover film 24 at the projecting area 211 the heat-insulating base 21 and at least partially over the electric heating wire 22 to secure. Alternatively, if the frame 241 on the cover 24 molded or pinned, creating a single unit, the entire unit removed and replaced by a new frame 241 and a new cover film 24 be replaced.

Unter Bezugnahme auf 3 bis 5 sind alternative Ausführungsformen der wärmeisolierenden Basis 21 wie auch des Rahmens 241 ebenfalls im Schutzumfang der vorliegenden Erfindung beinhaltet. In 3 weist die hitzeisolierende Basis 21 zwei symmetrische Paare koppelnder vertiefter Bereiche 212 an zwei entgegengesetzten Seiten zum Eingriff mit den sich abwärts erstreckenden Haken 242 des Rahmens 241 auf. Die hitzeresistente Abdeckfolie 24 kann ein Sieblattenelement sein, das aus einem wärmebeständigen Material wie etwa Teflon (Polytetrafluorethylen) oder dergleichen hergestellt ist, das eine glatte Oberfläche bereitstellt und den elektrischen Heizdraht 22 schützt. Bei einer bevorzugten Ausführungsform ist die hitzeresistente Abdeckplatte 24 im Bereich von 5,0 bis 9,0 mm breit und 8,0 bis 12,0 mm lang. Es versteht sich jedoch, dass die Größe der hitzeresistenten Abdeckplatte keine Begrenzung darstellt. Jegliche Breite und Länge der hitzeresistenten Abdeckfolie 24 liegen im Schutzbereich der vorliegenden Erfindung.With reference to 3 to 5 are alternative embodiments of the heat-insulating base 21 as well as the frame 241 also within the scope of the present invention. In 3 has the heat-insulating base 21 two symmetric pairs of coupled recessed areas 212 on two opposite sides for engagement with the downwardly extending hooks 242 of the frame 241 on. The heat-resistant cover film 24 may be a sheet bar element made of a heat-resistant material such as Teflon (polytetrafluoroethylene) or the like providing a smooth surface and the electric heating wire 22 protects. In a preferred embodiment, the heat-resistant cover plate 24 in the range of 5.0 to 9.0 mm wide and 8.0 to 12.0 mm long. It is understood, however, that the size of the heat-resistant cover plate is not limiting. Any width and length of the heat-resistant cover film 24 are within the scope of the present invention.

Alternativ kann die hitzeresistente Abdeckfolie 24 auf sich ein Adhäsiv zum Ankleben der hitzeresistenten Abdeckfolie 24 am elektrischen Heizdraht 22 und dem vorragenden Bereich 211 der hitzeisolierenden Basis 21 aufweisen. Das Adhäsiv kann ein spezielles Adhäsiv sein, welches den elektrischen Heizdraht 22 nicht beschädigt, wenn die hitzeresistente Abdeckplatte 24 entfernt wird, wodurch der hitzeresistenten Abdeckplatte 24 gestattet wird, temporär und ersetzbar zu sein.Alternatively, the heat-resistant cover film 24 Adhesive for gluing the heat-resistant cover film 24 on the electric heating wire 22 and the projecting area 211 the heat-insulating base 21 exhibit. The adhesive may be a special adhesive, which is the electric heating wire 22 not damaged if the heat-resistant cover plate 24 is removed, causing the heat-resistant cover plate 24 is allowed to be temporary and replaceable.

In 4 beinhaltet die hitzeisolierende Basis 21 zwei horizontale koppelnde Rillen 213 an zwei entgegengesetzten lateralen Seiten. Der Rahmen 241 weist zwei koppelnde Flansche 243 zum Eingriff mit den horizontalen koppelnden Rillen 213 der hitzeisolierenden Basis 21 auf.In 4 includes the heat-insulating base 21 two horizontal coupling grooves 213 on two opposite lateral sides. The frame 241 has two coupling flanges 243 for engagement with the horizontal coupling grooves 213 the heat-insulating base 21 on.

In 5 weist der Rahmen 241 eine Mehrzahl von sich abwärts erstreckenden Haken 244 auf, die jeweils an der Randkante einer Öffnung 161 auf der vorderen Abdeckplatte 16 eingehakt sind.In 5 indicates the frame 241 a plurality of downwardly extending hooks 244 on, each at the marginal edge of an opening 161 on the front cover plate 16 are hooked.

Gemäß einer alternativen Ausführungsform weist das Gehäuse 10 eine kontinuierliche obere Oberfläche und eine Bodenplatte auf und nicht eine Abdeckeinheit 15, welche die vordere Abdeckplatte 16 mit der Öffnung 161 beinhaltet. Die obere Oberfläche von Gehäuse 10 hat in sich eine Öffnung definiert, durch welche der vorragende Bereich 211 der hitzeisolierenden Basis 21 vorragt. Der Rahmen 241 greift in die in der oberen Oberfläche definierte Öffnung ein.According to an alternative embodiment, the housing 10 a continuous upper surface and a bottom plate and not a cover unit 15 which the front cover plate 16 with the opening 161 includes. The upper surface of housing 10 has defined in itself an opening through which the projecting area 211 the heat-insulating base 21 projects. The frame 241 engages the opening defined in the upper surface.

Claims (12)

Elektrisches Handschweißgerät, umfassend ein Gehäuse (10), eine Heizeinheit (20), die in dem Gehäuse montiert ist und einen elektrischen Heizdraht (22) beinhaltet, eine hitzebeständige Abdeckfolie (24), die zumindest einen Bereich des elektrischen Heizdrahts abdeckt und eine Presseneinheit (30), die schwenkbar mit dem Gehäuse verbunden ist und gegen die Heizeinheit wirkt, dadurch gekennzeichnet, dass eine hitzeisolierende Basis (21) einen vorragenden Bereich (211) aufweist, auf welchem der elektrische Heizdraht (22) montiert ist, und die hitzebeständige Abdeckplatte (24) innerhalb eines Rahmens (241) gehalten ist, der Rückhaltemittel (242, 243, 254; 212, 213, 247) umfasst, so dass die hitzebeständige Abdeckfolie entfernbar über dem vorragenden Bereich (211) und über zumindest dem besagten Bereich des elektrischen Heizdrahts (22) so gesichert ist, dass die Abdeckfolie (24) zum Austauschen entfernt werden kann, ohne die Presseneinheit (30) vom Gehäuse (10) zu trennen.Electric hand welder comprising a housing ( 10 ), a heating unit ( 20 ), which is mounted in the housing and an electric heating wire ( 22 ), a heat-resistant cover film ( 24 ), which covers at least a portion of the electric heating wire and a press unit ( 30 ) which is pivotally connected to the housing and acts against the heating unit, characterized that a heat-insulating base ( 21 ) a projecting area ( 211 ), on which the electric heating wire ( 22 ), and the heat-resistant cover plate ( 24 ) within a framework ( 241 ), the retention means ( 242 . 243 . 254 ; 212 . 213 . 247 ) so that the heat-resistant cover sheet is removably over the protruding area (FIG. 211 ) and over at least said region of the electric heating wire ( 22 ) is secured so that the cover ( 24 ) can be removed for replacement without the press unit ( 30 ) from the housing ( 10 ) to separate. Elektrisches Handschweißgerät gemäß Anspruch 1, wobei das Rückhaltemittel (242, 243, 254; 212, 213, 247) in Eingriff mit dem vorragenden Bereich (211) ist.Electrical manual welder according to claim 1, wherein the retaining means ( 242 . 243 . 254 ; 212 . 213 . 247 ) in engagement with the projecting area ( 211 ). Elektrisches Handschweißgerät gemäß Anspruch 2, dadurch gekennzeichnet, dass die hitzeisolierende Basis (21) in sich eine Mehrzahl von vertieften Bereichen (212) definiert hat, die auf entgegengesetzten Seiten des vorragenden Bereichs (211) angeordnet sind, und die Rückhaltemittel des Rahmens eine Mehrzahl von sich abwärts erstreckenden Hacken (242) umfassen, die jeweils in Eingriff mit den vertieften Bereichen (212) der hitzeisolierenden Basis sind.Electrical manual welder according to claim 2, characterized in that the heat-insulating base ( 21 ) a plurality of recessed areas ( 212 ) defined on opposite sides of the projecting area ( 211 ) and the retaining means of the frame comprise a plurality of downwardly extending hoes ( 242 ), each in engagement with the recessed areas ( 212 ) of the heat-insulating base. Elektrisches Handschweißgerät gemäß Anspruch 2, dadurch gekennzeichnet, dass die hitzeisolierende Basis (21) in sich zwei koppelnde Rillen (213) auf entgegengesetzten Seiten des vorragenden Bereichs (211) definiert aufweist und das Rückhaltemittel des Rahmens zwei koppelnde Flansche (243) auf entgegengesetzten Seiten davon umfasst, die jeweils in Eingriff mit den koppelnden Rillen auf der hitzeisolierenden Basis sind.Electrical manual welder according to claim 2, characterized in that the heat-insulating base ( 21 ) in it two coupling grooves ( 213 ) on opposite sides of the projecting area ( 211 ) and the retaining means of the frame has two coupling flanges ( 243 ) on opposite sides thereof, which are respectively engaged with the coupling grooves on the heat-insulating base. Elektrisches Handschweißgerät gemäß Anspruch 1, wobei das Rückhaltemittel (242, 243, 245; 212, 213, 247) in Eingriff mit dem Gehäuse (10) steht, um die hitzebeständige Abdeckfolie abnehmbar über dem vorragenden Bereich (211) und zumindest dem besagten Bereich des elektrischen Heizdrahts zu sichern.Electrical manual welder according to claim 1, wherein the retaining means ( 242 . 243 . 245 ; 212 . 213 . 247 ) in engagement with the housing ( 10 ) to remove the heat-resistant cover sheet detachably above the projecting area (FIG. 211 ) and at least to secure said portion of the electric heating wire. Elektrisches Handschweißgerät gemäß Anspruch 5, dadurch gekennzeichnet, dass das Gehäuse (10) eine Frontabdeckplatte (16) umfasst, die in sich eine Öffnung (251) in Passung mit dem vorragenden Bereich (211) der hitzeisolierenden Basis (21) definiert aufweist, und das Rückhaltemittel des Rahmens (241) an einer Randkante (253) der Öffnung auf der Frontabdeckung des Gehäuses befestigt ist, wodurch der hitzebeständigen Abdeckfolie (24) ermöglicht wird, zumindest den Bereich des elektrischen Heizdrahts abzudecken.Electric hand welder according to claim 5, characterized in that the housing ( 10 ) a front cover plate ( 16 ), which has an opening ( 251 ) in fit with the projecting area ( 211 ) of the heat-insulating base ( 21 ) and the retaining means of the frame ( 241 ) at a marginal edge ( 253 ) of the opening on the front cover of the housing, whereby the heat-resistant cover ( 24 ) is allowed to cover at least the area of the electric heating wire. Elektrisches Handschweißgerät gemäß Anspruch 5, dadurch gekennzeichnet, dass das Gehäuse (10) in sich eine Öffnung (251) mit einer Randkante (253) definiert aufweist, und wobei das Rückhaltemittel des Rahmens eine Mehrzahl von Haken (245) umfasst, die jeweils in Eingriff mit der Randkante der Öffnung in der oberen Abdeckung (16) des Gehäuses sind.Electric hand welder according to claim 5, characterized in that the housing ( 10 ) an opening ( 251 ) with a marginal edge ( 253 ), and wherein the retaining means of the frame comprises a plurality of hooks ( 245 ), each in engagement with the marginal edge of the opening in the upper cover (FIG. 16 ) of the housing. Elektrisches Handschweißgerät gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die hitzebeständige Abdeckfolie (24) ein Maschenelement ist, das aus Polytetrafluorethylen hergestellt ist.Electrical manual welder according to one of the preceding claims, characterized in that the heat-resistant cover foil ( 24 ) is a mesh member made of polytetrafluoroethylene. Elektrisches Handschweißgerät gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Rahmen (241) aus einem Kunststoffmaterial besteht und auf der hitzebeständigen Abdeckfolie (24) geformt ist.Electric hand welder according to one of the preceding claims, characterized in that the frame ( 241 ) consists of a plastic material and on the heat-resistant cover ( 24 ) is shaped. Elektrisches Handschweißgerät gemäß einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die hitzebeständige Abdeckfolie (24) abnehmbar an dem Rahmen (241) befestigt ist.Electric hand welder according to one of claims 1 to 8, characterized in that the heat-resistant cover ( 24 ) detachable on the frame ( 241 ) is attached. Elektrisches Handschweißgerät gemäß einem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Heizeinheit (20) eine Mehrzahl von elektrischen Heizdrähten (25) umfasst, die an der hitzeisolierenden Basis (21) befestigt sind.Electrical manual welder according to any preceding claim, characterized in that the heating unit ( 20 ) a plurality of electrical heating wires ( 25 ) which are attached to the heat-insulating base ( 21 ) are attached. Elektrisches Handschweißgerät gemäß einem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Presseneinheit (30) einen hitzeisolierenden Block (31) umfasst und die Presseneinheit abwärts schwenkbar zum Eingriff des hitzeisolierenden Blocks in ein zu verschweißendes Objekt beweglich ist, das auf einem vorstehenden Bereich (211) der hitzeisolierenden Basis (21) gehaltert ist.Electric hand welder according to any preceding claim, characterized in that the press unit ( 30 ) a heat-insulating block ( 31 ) and the press unit is pivotable downwardly for engaging the heat-insulating block in an object to be welded, which is mounted on a projecting area (Fig. 211 ) of the heat-insulating base ( 21 ) is held.
DE69823349T 1998-09-15 1998-09-15 Hand-operated electric welder with removable heat-resistant cover foil Expired - Fee Related DE69823349T2 (en)

Applications Claiming Priority (1)

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EP98307464A EP0987093B1 (en) 1998-09-09 1998-09-15 Hand-held electric sealer with detachable heat resistant cover sheet.

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DE69823349D1 DE69823349D1 (en) 2004-05-27
DE69823349T2 true DE69823349T2 (en) 2005-05-12

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DE69823349T Expired - Fee Related DE69823349T2 (en) 1998-09-15 1998-09-15 Hand-operated electric welder with removable heat-resistant cover foil

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020208213A1 (en) * 2019-04-12 2020-10-15 Closac Ag Welding unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020208213A1 (en) * 2019-04-12 2020-10-15 Closac Ag Welding unit
US11511497B2 (en) 2019-04-12 2022-11-29 Closac Ag Welding unit

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