DE8808693U1 - Welding device - Google Patents

Welding device

Info

Publication number
DE8808693U1
DE8808693U1 DE8808693U DE8808693U DE8808693U1 DE 8808693 U1 DE8808693 U1 DE 8808693U1 DE 8808693 U DE8808693 U DE 8808693U DE 8808693 U DE8808693 U DE 8808693U DE 8808693 U1 DE8808693 U1 DE 8808693U1
Authority
DE
Germany
Prior art keywords
welding
wedge
welding device
profile grooves
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8808693U
Other languages
German (de)
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.)
Niederberg-Chemie 4133 Neukirchen-Vluyn De GmbH
Original Assignee
Niederberg-Chemie 4133 Neukirchen-Vluyn De 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 Niederberg-Chemie 4133 Neukirchen-Vluyn De GmbH filed Critical Niederberg-Chemie 4133 Neukirchen-Vluyn De GmbH
Priority to DE8808693U priority Critical patent/DE8808693U1/en
Publication of DE8808693U1 publication Critical patent/DE8808693U1/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
    • B29C66/01—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
    • 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
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—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
    • 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
    • B29C66/81433—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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • 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
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2092—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" and involving the use of a facer
    • 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

Landscapes

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

Description

SchweißvorrichtungWelding device

Die Erfindung betrifft eine Schweißvorrichtung mit Keil, insbesondere Heizkeil, für miteinander zu verbindende Abdichtungsbahnen, wobei die Abdichtungsbahnen unter Berührung des zwischenliegenden Keiles an den zu verbindenden Rändern zusammengeführt werden und wobei die Schweißflächen durch Berührung mit dem Keil plastifiziert werden.The invention relates to a welding device with a wedge, in particular a heating wedge, for sealing sheets to be connected to one another, whereby the sealing sheets are brought together by touching the intermediate wedge at the edges to be connected and whereby the welding surfaces are plasticized by contact with the wedge.

Früher war das Heißluftschweißen für die Verschweißung von Abdichtungsbahnen dominierend. Beim Heißluftschweißen wurde mittels eines Heißluftgebläses Heißluft erzeugt und mit der Heißluft die Schweißflächen plastifiziert. Anschließend wurden die miteinander zu verschweißenden Bahnenränder gegeneinandergedrückt. Es hat sich jedoch gezeigt, daß das Heißluftschweißen verschiedene Nachteile hat.In the past, hot air welding was the dominant method for welding waterproofing membranes. In hot air welding, hot air was generated using a hot air blower and the hot air was used to plasticize the welding surfaces. The edges of the membranes to be welded together were then pressed against each other. However, it has been shown that hot air welding has various disadvantages.

Bei zeitgemäßen Schweißgeräten hat sich der Heizkeil durchgesetzt. Bei dem Heizkeil handelt es sich um ein keilförmiges Stück, das beheizt wird. Die Schweißflächen werden durch Berührung mit dem Heizkeil plastifiziert. Anschließend werden die miteinander zu verbinderden Bahnenränder durch ein Andruckroilenpasr gegeneinandergedrückt. Das Andruckrollenpaar ist dem Heizkeil in Schweißrichtung nachgeordnet.The heating wedge has become the standard in modern welding machines. The heating wedge is a wedge-shaped piece that is heated. The welding surfaces are plasticized by contact with the heating wedge. The edges of the webs to be joined are then pressed against each other by a pair of pressure rollers. The pair of pressure rollers is arranged downstream of the heating wedge in the welding direction.

Die Festigkeit der entstandenen Schweißnähte wird überlicherweise durch Schälversuche getestet. Bei diesen Versuchen zeigt sich, daß die Breite der Schweißnaht für deren Festigkeit nur bis zu einem bestimmten Maß von entscheidendei Bedeutung ist. Dieses Maß beträgt etwa das doppelte der Bahnendicke. Daraus ergibt sich z.B. für Abdichtungsbahnen vonThe strength of the resulting weld seams is usually tested by peeling tests. These tests show that the width of the weld seam is only of decisive importance for its strength up to a certain extent. This is approximately twice the thickness of the sheet. This results in, for example, for sealing sheets of

2,5 mm Dicke eine zweckmäßige Schweißnahtbreite von 5 nun. Bei größerer Bahnenbreite wird keine nennenswerte Steigerung der Schälfestigkeit erreicht.2.5 mm thickness, a suitable weld seam width of 5 is now achieved. With a larger web width, no significant increase in peel strength is achieved.

Insgesamt ist die Festigkeit der Schweißnähte geringer als die Festigkeit der Bahn außerhalb des Schweißnahtbereiches. Overall, the strength of the welds is lower than the strength of the web outside the weld area.

die ^-^sjbe 2ünrund? ■ di-&thgr;the ^-^sjbe 2ü n ru n d? ■ di-&thetas;

Festigkeit der Schweißnaht zu verbessern. Dabei geht die Erfindung von der Erkenntnis aus, daß die üblicherweise an der Oberfläche glatt ausgebildeten Heizkeile eine linienförmige Grenzflächengefügestruktur im Schweißnahtbereich verursachen. Entlang dieser Linie verläuft die Schäl- bzw. Rißlinie.To improve the strength of the weld seam. The invention is based on the knowledge that the heating wedges, which are usually smooth on the surface, cause a linear interface structure in the weld seam area. The peeling or cracking line runs along this line.

Nach der Erfindung wird diese nachteilige Gefügestrukturausbildung in Anwendung einer bei der Verschweißung von PVC-Rohren gewonnenen Erkenntnis vermieden. Bei PVC-Rohren, die stumpf geschweißt werden, hat sich gezeigt, daß durch eine Schweißvorrichtung mit gewellten Schweißflächen Gefügestrukturen erzeugt werden, die ähnlich gewellt verlaufen. Diese Gefügestrukturen haben sich gegenüber einer geradlinienförmigen Gefügestruktur als fester erwiesen. Obige Erkenntnis hat sich jedoch weder beim Verschweißen von PVC-Rohren durchgesetzt noch wurde jemals die Anwendung auf kontinuierliche Schweißvorgänge wie auf das Verschweißen von Abdichtungsbahnen in Erwägung gezogen. Nach der Erfindung erfolgt die Anwendung auf das Schweißen von Abdichtungsbahnen dadurch, daß der Keil mit Profilrillen versehen ist, die in Schweißrichtung verlaufen.According to the invention, this disadvantageous microstructure formation is avoided by applying knowledge gained from the welding of PVC pipes. In the case of PVC pipes that are butt-welded, it has been shown that a welding device with corrugated welding surfaces produces microstructures that are similarly corrugated. These microstructures have proven to be stronger than a straight-line microstructure. However, the above knowledge has not been adopted for the welding of PVC pipes, nor has its application to continuous welding processes such as the welding of waterproofing membranes ever been considered. According to the invention, the application to the welding of waterproofing membranes is achieved by providing the wedge with profile grooves that run in the welding direction.

Die Profilrillen haben vorzugsweise eine Tiefe, deren Maß 5 bis 25 % der Dicke der zu verbindenden Bahnen beträgt. Die Profilrillen sind im Querschnitt rund bzw. abgerundet ausgeführt.The profile grooves preferably have a depth of 5 to 25% of the thickness of the sheets to be connected. The profile grooves are round or rounded in cross-section.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.An embodiment of the invention is shown in the drawing.

Figur 1 zeigt in einer schematischen Teilansicht einen Heizkeil 1, der mit einer Heizpatrone 2 über elektrische Zuführungsleitungen 3 beheizt wird. Der Heizkeil besteht aus Kupfer und ist in Bereiche 4 und 5 unterteilt. Zwischen den Bereichen 4 und 5 ist eine Ausnehmung bzw. Vertiefung 6 vorgesehen. Infolgedessen werden Abdichtungsbahnen 7 und 8 durch Berührung mit dem Heizkeil 1 an zwei Streifen erwärmt, die im Abstand der Ausnehmung 6 voneinander an den Rändern der Abdichtungsbahnen 7 und 8 liegen. Die Abdichtungsbahnen 7 und 8 werden nach der Berührung mit dem Heizkeil zwischen zwei Andruckrollen 9 und 10 geführt. Die Andruckrollen 9 und 10 drücken die Abdichtungsbahnen 7 und 8 zusammen, so daß die plastifizierten Randstreifen miteinander verschweißen.Figure 1 shows a schematic partial view of a heating wedge 1 which is heated by a heating cartridge 2 via electrical supply lines 3. The heating wedge is made of copper and is divided into areas 4 and 5. A recess or depression 6 is provided between areas 4 and 5. As a result, sealing strips 7 and 8 are heated by contact with the heating wedge 1 on two strips which are located at the edges of the sealing strips 7 and 8 at a distance of the recess 6 from each other. After contact with the heating wedge, the sealing strips 7 and 8 are guided between two pressure rollers 9 and 10. The pressure rollers 9 and 10 press the sealing strips 7 and 8 together so that the plasticized edge strips weld together.

Nach Figur 2 und 3 sind die Oberflächen der Bereiche 4 und 5 mit Profilrillen 10 versehen. Die Profilrillen 10 haben im Ausführungsbeispiel bei einer Bahnendicke von 3 mm eine Tiefe von 0,25 mm. Die Bereiche 4 und 5 sind jeweils 10 mm breit. Der Abstand zwischen den Bereichen 4 und 5 beträgt 15 mm.According to Figures 2 and 3, the surfaces of areas 4 and 5 are provided with profile grooves 10. In the example shown, the profile grooves 10 have a depth of 0.25 mm with a web thickness of 3 mm. Areas 4 and 5 are each 10 mm wide. The distance between areas 4 and 5 is 15 mm.

Durch die nebeneinanderliegenden Schweißnähte entsteht eine prüffähige Schweißverbindung, indem der Zwischenraum zwischen den entstandenen beiden Schweißnähten mit Druckluft beaufschlagt werden kann. Sofern dabei über eine gewisse Zeit der Luftdruck konstant gehalten werden kann, wird die Schweißnahtverbindung als ausreichend angesehen.The weld seams lying next to each other create a testable welded joint by applying compressed air to the space between the two weld seams. If the air pressure can be kept constant over a certain period of time, the welded joint is considered to be sufficient.

Claims (3)

SchutzansprücheProtection claims 1. Schweißvorrichtung mit Keil für miteinander au verbindende Abdichtungsbahnen, wobei die Abdichtungsbahnen unter Berührung des zwischenliegenden Keiles an den zu verbindenden Rändern zusammengeführt werden und durch die Berührung mit dem Keil plastifiziert werden, dadurch gekennzeichnet, daß der Keil (1) mit Profilrillen (10) versehen ist, die in Schweißrichtung verlaufen. 1. Welding device with a wedge for sealing sheets that are to be connected to one another, whereby the sealing sheets are brought together at the edges to be connected by contact with the intermediate wedge and are plasticized by contact with the wedge, characterized in that the wedge (1) is provided with profile grooves (10) that run in the welding direction. 2. Schwexßvorrichtung nach Anspruch 1, dadurch gekeimzeichnet, daß die Tiefe der Profilrixlen 5 % bis 25 % der Dicke der zu verbindenden Bahnen beträgt.2. Welding device according to claim 1, characterized in that the depth of the profile grooves is 5% to 25% of the thickness of the webs to be joined. 3. Schwexßvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Profilrillen (10) im Querschnitt rund oder abgerundet sind.3. Welding device according to claim 1 or 2, characterized in that the profile grooves (10) are round or rounded in cross section.
DE8808693U 1988-07-07 1988-07-07 Welding device Expired DE8808693U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8808693U DE8808693U1 (en) 1988-07-07 1988-07-07 Welding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8808693U DE8808693U1 (en) 1988-07-07 1988-07-07 Welding device

Publications (1)

Publication Number Publication Date
DE8808693U1 true DE8808693U1 (en) 1988-09-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29700628U1 (en) * 1997-01-16 1997-09-04 Wittmaier, Klaus, 71665 Vaihingen Device for applying an endless strip on an endless web
DE19741688A1 (en) * 1997-09-18 1999-03-25 Andreas Schmidt Heated welding tool for joining overlapping plastic strips or sheets used in waste tip construction
EP3381661B1 (en) * 2017-03-28 2020-03-11 Leister Technologies AG Mobile heated wedge welder, heating wedge and welding method
CN111194258A (en) * 2017-10-06 2020-05-22 莱丹科技股份公司 Contact welding heating assembly and automatic welding machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29700628U1 (en) * 1997-01-16 1997-09-04 Wittmaier, Klaus, 71665 Vaihingen Device for applying an endless strip on an endless web
DE19741688A1 (en) * 1997-09-18 1999-03-25 Andreas Schmidt Heated welding tool for joining overlapping plastic strips or sheets used in waste tip construction
DE19741688B4 (en) * 1997-09-18 2005-10-13 Andreas Schmidt Device and method for joining, in particular hot wedge overlap welding, of plastic sheets
EP3381661B1 (en) * 2017-03-28 2020-03-11 Leister Technologies AG Mobile heated wedge welder, heating wedge and welding method
CN111194258A (en) * 2017-10-06 2020-05-22 莱丹科技股份公司 Contact welding heating assembly and automatic welding machine
US10894372B2 (en) 2017-10-06 2021-01-19 Leister Technologies Ag Contact welding heating component and automatic welding machine
CN111194258B (en) * 2017-10-06 2021-03-16 莱丹科技股份公司 Contact welding heating assembly and automatic welding machine

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