DE1914960A1 - Plastic welding machine - Google Patents

Plastic welding machine

Info

Publication number
DE1914960A1
DE1914960A1 DE19691914960 DE1914960A DE1914960A1 DE 1914960 A1 DE1914960 A1 DE 1914960A1 DE 19691914960 DE19691914960 DE 19691914960 DE 1914960 A DE1914960 A DE 1914960A DE 1914960 A1 DE1914960 A1 DE 1914960A1
Authority
DE
Germany
Prior art keywords
welding
plastic
welding tip
tip
plastic welding
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.)
Granted
Application number
DE19691914960
Other languages
German (de)
Other versions
DE1914960B2 (en
DE1914960C3 (en
Inventor
Adolf Hasenauer
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.)
Wiener Schwachstromwerke GmbH
Original Assignee
Wiener Schwachstromwerke 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 Wiener Schwachstromwerke GmbH filed Critical Wiener Schwachstromwerke GmbH
Publication of DE1914960A1 publication Critical patent/DE1914960A1/en
Publication of DE1914960B2 publication Critical patent/DE1914960B2/en
Application granted granted Critical
Publication of DE1914960C3 publication Critical patent/DE1914960C3/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—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
    • B29C66/80—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
    • B29C66/818—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
    • 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
    • B29C66/8187—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 electrical insulating constructional aspects
    • B29C66/81871—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 electrical 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools

Description

Kunststoffschweißgerät Die vorliegende Erfindung bezieht sich auf ein Kunststoffschweißgerät mit leicht auswechselbarer Schweißspitze, welche aus einem mit einer Tetrafluoräthylenfolie umwickelten Heizer gebildet ist. Plastic Welding Apparatus The present invention relates to a plastic welding device with an easily exchangeable welding tip, which is made of a heater wrapped with a tetrafluoroethylene film is formed.

Bedingt durch die sich ständig steigernde Verwendung von Kunststoffteilen in der industriellen Massenproduktion, ergibt sich die Notwendigkeit, NEttel und Wege zu finden, diese Teile rationell und mit größtmöglicher Wi@rtschaftlichkeit zu verarbeiten. Due to the constantly increasing use of plastic parts in industrial mass production, there arises the need for NEttel and To find ways to rationalize these parts and with the greatest possible economic efficiency to process.

Eine immer größer werdende Bedeutung erlangt hie@bei die Verschweißung von Kunststoffen.Welding is becoming increasingly important of plastics.

Es sind schon mehrere Kunststoffschweißgeräte vorgeschlagen worden brw. teilweise auch im Gebrauch. Diese Schweißgeräte weisen entweder blanke oder beschi@htete Schweißspitzen aus Metall auf. Durch seine besonders gunstigen Eigenschaften wird für derartige Beschichtungen der Kunststoff Getrafluor. Several plastic welding machines have been proposed brw. partly also in use. These welding machines have either bare or Coated metal welding tips. Due to its particularly favorable properties will for such coatings the plastic Getrafluor.

äthylen (Teflon) verwendet.ethylene (Teflon) is used.

Bei der Verwendung von unbeschichteten Metallspitzen ergibt sich der Mangel eines nicht kontinuierlichen Arbeitsvorganges. When using uncoated metal tips, the result is the lack of a discontinuous operation.

@ Der Grund hiefur liegt sowohl darin, daß das blanke Metall sofort einen Großteil seiner wärme an das zu bearbeitende Material abgibt, sodaß jeweils eine neuerliche Erwärmung abgewartet werden muß, als auch im bekannten Haftenbleiben von Kunststoffresten an der Schweißspitze. @ The reason for this lies in the fact that the bare metal immediately gives off a large part of its heat to the material to be processed, so that each a renewed warming must be awaited, as well as in the known sticking of plastic residues on the welding tip.

Die bekanntesten Einrichtungen für die Verwendung von mit Teflon oder Silikongummi beschichteten Schweißspitzen, welche in DP 1160961 und USA-Pat. 3 015 601 beschrieben sind genügen jedoch den Anforderungen einen wirtschaftlichen Gebrauches nicht, da die Anwendung der genannten Schweißstempel verständlicher sTeise mit relativ hohen Kosten verbunden ist. Die genannten Nachteile werden erfindungsgemäß beseitigt. Nach dem Erfindungsgedanken ist ein Schweißgerät, welches eine gegenüber dem Stand der Technik äußerst kostensparend ausgeführte Schweißspitze aufweist, die mit wenigen Handgriffen auswechselbar angeordnet ist, dadurch gekennzeichnet, daß die Schweißspitze aus einem in einer oder mehreren Windungen zusammengelegten, kunststoffüberzogenen Metallband hohen spezifischen Widerstandes mit blanken Endflächen besteht, die -gegeneinander isoliert auf verschiedenen Setzten der Schweißspitze angeordnet sind und als Kontakt flächen für den Stromübergang; und Sitzflächen zum Einsetzen in einen isolierenden#Haltegriff dienen. The most famous devices for using with Teflon or silicone rubber coated welding tips, which are described in DP 1160961 and USA-Pat. 3 015 601 are described, however, meet the requirements of an economic Not used, as the use of the welding stamps mentioned is more understandable is associated with relatively high costs. The disadvantages mentioned are according to the invention eliminated. According to the idea of the invention, a welding device is one opposite has state-of-the-art welding tip that is extremely cost-saving, which is arranged to be exchangeable in a few simple steps, characterized in that that the welding tip consists of a folded one or more turns, Plastic-coated metal tape with high specific resistance with bare end surfaces consists, which are isolated from each other on different positions of the welding tip are arranged and as contact surfaces for the current transfer; and seats for Insertion in an insulating # handle.

Eine derartige Schweißspftze besteht aus einem streifenförmigen Heizer, welcher vorzugsweise aus dem Widerstandsmaterial Vacromiuiii COO besteht und einer etwas kürzeren Streifenfoiie aus Gefln9 welche sich überlappend um den Heizerstreifen schließt, sodaß beiderseits der Folie der Heizerstreifen herausragt. Die beiden blanken Enden des Heizerstreifens werden um 1800 auswärts gebogen, sodaß die Teflon-folie geklemmt wird. Das so erhaltene Werkstück wird nun mittig gefaltet, bis sich die beiden Schenkel des erhaltenen Winkels berühren. Die, die fertige Schweißspitze teilweise nmhüllende Teflonfolie hält im Betriebszustand die Schweißtemperatur konstant, trennt die beiden Heizerschenkel elektrisch und verhindert überdies ein Haftenbleiben von Kunststoffresten an der Schweißspitze. Das Einführen der Schweißspitze in ein isolierendes Führungsstück wird durch itei Führungsbleche aus 1#eusilber, welche gleichzeitig die Funktion der Stromzuführung ausüben begrenzt. ueber ein u-förmiges Ble@h sind Führungsstücke, Schweißspitze und die Fürungsbleche gegen zwei Anschlußbleche aus Neusilber um 1800 verschwenkbar verbunden.Such a weld puddle consists of a strip-shaped heater, which preferably consists of the resistance material Vacromiuiii COO and one somewhat shorter stripes of poultry 9 which are overlapping closes around the heater strip so that the heater strip protrudes on both sides of the film. The two bare ends of the heater strip are bent outwards by 1800 so that the Teflon film is clamped. The workpiece obtained in this way is now folded in the middle, until the two legs of the angle obtained touch each other. Die, the finished welding tip Teflon foil partially encased in operation keeps the welding temperature constant, separates the two heater legs electrically and also prevents them from sticking of plastic residues on the welding tip. Inserting the welding tip into a insulating guide piece is made of 1 # eusilber by itei guide plates, which at the same time exercise the function of the power supply is limited. over a u-shaped Ble @ h are guide pieces, welding tips and the lead plates against two connecting plates Made of nickel silver around 1800 connected to pivot.

Die beiden Anschlußbleche sind an ihren Enden mit einem zweiaderigen Anschlußkabel verbunden und werden durch ein Isolierplättchen elektrisch getrennt. Die beiden Anschlußbleche werden von einem Klemmstück, welches zugleich als Daumenschutz and hufhängevorrichtung ausgebildet ist, gegen das Isolierplättahen gedrückt.The two connecting plates have a two-wire connection at their ends Connection cables connected and are electrically separated by an insulating plate. The two connection plates are held by a clamping piece, which also acts as a thumb protection and hoof suspension device is pressed against the Isolierplättahen.

Das Klemmstück besteht aus einem Blechteil, welcher am Ende in Hakenform gebogen ist und einem segmentförmigen Fortsatz, der durch eine Gewindebohrung mit einem Preßstoff-Handgriff verbunden ist. The clamping piece consists of a sheet metal part, which is hooked at the end is curved and a segment-shaped extension, which is through a threaded hole with a molded handle is connected.

Eine Zugentlastung des Anschlußkabels ist durch ein v-förmig ausgebildetes Kleininblech gewährleistet, welches sich federnd mit einem Schenkel gegen die Kabelhülle und-mit dem anderen Schenkel gegen einen Gewindestift, der Gewindebohrungen im Handgriff und in dem Schenkel selbst verbindet, abstützt. A strain relief of the connection cable is formed by a V-shape Small sheet ensures that one leg is resilient against the cable sheath and-with the other leg against a threaded pin, the threaded holes in the handle and in the leg itself connects, supported.

Die beiden Adern des Anschlußkabels weisen Kabel schuhe auf, die an die verschiedenen Anschlüsse eines schutzgeerdeten Transformators angeschlossen werden können. The two wires of the connection cable have cable shoes that connected to the various connections of a protective earthed transformer can be.

Die Erfindung wird nun anhand der Zeichnung erklärt. The invention will now be explained with reference to the drawing.

Es zeigen: Fig. 1 eine erfindungsgemaß'#e Schweißspitze in Ansicht.1 shows a welding tip according to the invention in view.

Fig. 2 ein erfindungsgemäßes Hunststoffschweißgerät im Längsschnitt. 2 shows a plastic welding device according to the invention in longitudinal section.

Fig. 3 eine Kreuzrißansicht des erfindungsgemäßen Kunststoffschweißgerätes. 3 is a cross-sectional view of the plastic welding device of the invention.

Wie in Fig. 1 ersichtlich ist, besteht eine Schweißspitze 1 aus einem streifenförmigen Heizer 2 welcher mit der Teflonfolie 2 b umschlossen wird. As can be seen in Fig. 1, a welding tip 1 consists of a strip-shaped heater 2 which is enclosed with the Teflon film 2 b.

Wie Fig. 2 zeigt, wird das Einführen der Schweißspitze in ein isolierendes Führungsstück 3 durch zwei Führungsbleche 4 a und 4 b begrenzt. Die Befestigung der Schweißspitze erfolgt durch eine Druckschraube 5, welche sich gegen die Gewindebohrung eines als Gehäuse dienenden u-förmigen Bleches 6 und das Führungsblech 4 a abstützt. Das u-förmige Blech ist mitsamt der SchweiB-spitze, dem Führungsstück sowie den beiden Führmngsblechen um eine isolierte Schraube 7 gegen zwei Anschlußbleche 8 a und 8 b um 1800 verschwenkbar gelagert. Die beiden Anichlußbleche reichen in eine Längsbohrung im Preßstoffgriff 10, sind an ihren Enden mit einem zweiaderigen Anschlußkabel 11 verbunden und durch ein Isolierplättchen 12 elektrisch getrennt. Die Anschlußbleche und das Isolierplättchen sind durch eine Klemmeinrichtung 13 a ukd 13 b mit dem Preßßtoffgriff 10 verklemmt. Diese Klemmvorrichtung besteht aus einem als Daumenschutz und #~ufhängevorrichtung ausgebildeten Blechteil 13 b und einem in die Bohrung 9 passenden Segmentstück 13 a. Das Segmentstück weist eine Gewindebohrung auf und kann über einen Gewindestift 14 mit einer Gewindebohrung im Preßstoffgriff verbunden werden#kDie Zugentlastung des Anschlußkabels wird durch ein v-förmig ausgebildetes Klemmblech 15 gewährleistet, wobei sich ein Schenkel gegen die Kabelhülle des Anschlußkalbes und der andere Schenkel gegen einen Gewindestift 16, der Gewindebohrung im Handgriff mit dem Schenkel selbst verbindet, abstützt. As Fig. 2 shows, the insertion of the welding tip into an insulating Guide piece 3 limited by two guide plates 4 a and 4 b. The attachment the welding tip is carried out by a pressure screw 5, which is against the threaded hole serving as a housing U-shaped plate 6 and supports the guide plate 4 a. The U-shaped sheet is together with the welding tip, the guide piece and the two guide plates around an insulated screw 7 against two connecting plates 8 a and 8 b mounted pivotable around 1800. The two connection plates reach into one Longitudinal hole in the pressed material handle 10 are at their ends with a two-wire connection cable 11 connected and electrically separated by an insulating plate 12. The connecting plates and the insulating plate are by a clamping device 13 a ukd 13 b with the Preßstoffgriff 10 stuck. This clamping device consists of a thumb protection and hanging device formed sheet metal part 13 b and one in the bore 9 matching Segment piece 13 a. The segment piece has a threaded hole and can via a threaded pin 14 with a threaded hole in the pressed material handle # kThe strain relief of the connecting cable is formed by a V-shaped Clamping plate 15 ensures, with one leg against the cable sheath of the connecting calf and the other leg against a threaded pin 16, the threaded hole in the handle connects to the leg itself, is supported.

Die beiden Adern der Anschlußkab# @@ weisen Kab@@schuhe 17 auf, die an die verschiedenen Anschlüsse eines in der Zeichnung nicht sichtbar sch@utzgeerdeten Transformators angeschlossen werden können. The two wires of the connection cab # @@ have Kab @@ shoes 17 that to the various connections of a protective earthed one that is not visible in the drawing Transformer can be connected.

Claims (2)

PatentanSprüche: Patent claims: @ SchweiBgerät für Kunststoffschweißung mit einer mit einem hitzebeständigen Kunststoffüberzug versehensm Schweißspitze, dadurch gekennzeichnet, daß die Schweißspitze aus einem in einer oder mehreren Windungen zusammengelegten, kunststoffüberzogenen Metallband hohen spezifischen Widerstandes mit blanken Endflächen besteht, die gegeneinander isoliert die Außenflächen der Schweißspitze bilden und als Kontaktflächen für den Stromübergang und Sitzflächen zum Einsetzen in einen isolierenden Haltegriff dienen. @ Welder for plastic welding with a with a heat-resistant Plastic coating provided with welding tip, characterized in that the welding tip from a plastic-coated one folded in one or more turns Metal tape of high resistivity with bare end faces that oppose each other insulated form the outer surfaces of the welding tip and as contact surfaces for the Current transfer and seat surfaces are used to insert into an insulating handle. 2. Schweißgerät für Kunststoffschweißung nach Anspruch 1, gekennzeichnet durch zur Begrunzung des Einfahrens in ein isolierendes Fürungsatück angeordnete Führungsbleche, welche gleichzeitig die Funktion der Stromzuführung und der Verklemmung der Schweißspitze ausüben. 2. Welding device for plastic welding according to claim 1, characterized by arranged to limit the entry into an insulating section Guide plates, which simultaneously function as power supply and jamming the welding tip. durch:by:
DE1914960A 1968-03-25 1969-03-24 Device for welding plastic Expired DE1914960C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT291668A AT302638B (en) 1968-03-25 1968-03-25 Welding device for plastic

Publications (3)

Publication Number Publication Date
DE1914960A1 true DE1914960A1 (en) 1969-10-16
DE1914960B2 DE1914960B2 (en) 1973-10-31
DE1914960C3 DE1914960C3 (en) 1974-05-30

Family

ID=3542322

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1914960A Expired DE1914960C3 (en) 1968-03-25 1969-03-24 Device for welding plastic

Country Status (3)

Country Link
AT (1) AT302638B (en)
CH (1) CH490954A (en)
DE (1) DE1914960C3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356493A1 (en) * 1976-06-30 1978-01-27 Laurent Philippe Fine hot wire tool for butt welding thermoplastics - for low energy welding without prominent weld lips
WO1999016609A1 (en) * 1997-09-30 1999-04-08 Robert Bosch Gmbh Tubular device in a bagging machine
FR2856658A1 (en) * 2003-06-25 2004-12-31 Ammy Chou REMOVABLE THERMOSCELLING APPARATUS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356493A1 (en) * 1976-06-30 1978-01-27 Laurent Philippe Fine hot wire tool for butt welding thermoplastics - for low energy welding without prominent weld lips
WO1999016609A1 (en) * 1997-09-30 1999-04-08 Robert Bosch Gmbh Tubular device in a bagging machine
US6524434B1 (en) * 1997-09-30 2003-02-25 Robert Bosch Gmbh Tubular device in a bagging machine
FR2856658A1 (en) * 2003-06-25 2004-12-31 Ammy Chou REMOVABLE THERMOSCELLING APPARATUS

Also Published As

Publication number Publication date
AT302638B (en) 1972-10-25
CH490954A (en) 1970-05-31
DE1914960B2 (en) 1973-10-31
DE1914960C3 (en) 1974-05-30

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)