WO2023006518A1 - Hot wedge welding device for the surface-to-surface connection of sealing sheets to a base and/or to a substrate - Google Patents

Hot wedge welding device for the surface-to-surface connection of sealing sheets to a base and/or to a substrate Download PDF

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Publication number
WO2023006518A1
WO2023006518A1 PCT/EP2022/070233 EP2022070233W WO2023006518A1 WO 2023006518 A1 WO2023006518 A1 WO 2023006518A1 EP 2022070233 W EP2022070233 W EP 2022070233W WO 2023006518 A1 WO2023006518 A1 WO 2023006518A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
welding device
cartridge
wedge
wedges
Prior art date
Application number
PCT/EP2022/070233
Other languages
German (de)
French (fr)
Inventor
Adolf Niederberger
Pascal KÜNG
Peter Christen
Silvan HORAND
Original Assignee
Leister Technologies Ag
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 Leister Technologies Ag filed Critical Leister Technologies Ag
Priority to DE112022003782.2T priority Critical patent/DE112022003782A5/en
Publication of WO2023006518A1 publication Critical patent/WO2023006518A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/04—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of metal foils
    • 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
    • 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
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81469—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8248—Pressure application by weights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/865—Independently movable welding apparatus, e.g. on wheels
    • B29C66/8652—Independently movable welding apparatus, e.g. on wheels being pushed by hand or being self-propelling
    • 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
    • B29C66/865—Independently movable welding apparatus, e.g. on wheels
    • B29C66/8652—Independently movable welding apparatus, e.g. on wheels being pushed by hand or being self-propelling
    • B29C66/86521—Independently movable welding apparatus, e.g. on wheels being pushed by hand or being self-propelling being self-propelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • 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
    • B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
    • B29L2031/108—Roofs

Definitions

  • the invention relates to a mobile welding device for the surface connection of a waterproofing membrane to a base and/or a subsurface, comprising at least one support frame arrangement that can be moved on the base and/or the subsurface and an electrical hot wedge heating device that extends in a transverse direction between two opposite longitudinal sides of the support frame arrangement.
  • sealing sheet includes, in particular, sheets based on bitumen and modified bitumen, but is not limited to them.
  • the term also refers generally to thermoplastic webs, ie webs made of a thermoplastic material including thermoplastic webs.
  • sealing membranes are often used when large and essentially flat and horizontal surfaces or surfaces that are only slightly inclined to the horizontal are to be sealed against the ingress of liquids. Sealing membranes are therefore often used as a roof seal (roof skin) on (flat) roofs to protect against the ingress of water into a building. turns.
  • the sealing membranes are connected in a welding process to a base or substrate, which can consist of a layer of sealing membranes that has already been laid, other different supporting structures of the roof or a mixture of these.
  • the waterproofing membranes are laid in an overlapping manner in order to prevent water from penetrating into the gaps between individual waterproofing membranes.
  • the sealing membranes are often connected to a substrate and/or a substrate over their entire width as well as along their entire length, in short “full surface”. Bitumen-type or bitumen-based waterproofing membranes in the roof area are typically around 1 m wide.
  • a well-known and widely used method for connecting waterproofing membranes to a substrate and/or a substrate the waterproofing membranes, which are usually supplied in rolls, are first rolled out onto the substrate to be sealed, aligned and then rolled up again.
  • a rolled-up section of the waterproofing membrane and a correspondingly sized section of the underlay and/or the substrate are then heated using a hand-held gas torch. Only when both sections have been sufficiently heated is the rolled-up bitumen sheet partially unrolled, for example with the foot, and trampled on to the ground. This step is repeated until an entire waterproofing membrane has been unrolled and bonded to the base and/or subsurface.
  • this method can easily lead to local overheating of the waterproofing membranes, which can lead to embrittlement of the material after cooling, especially when processing thermoplastic membranes based on bitumen.
  • a resulting lack of elasticity in the waterproofing membranes can lead to cracks in the roof membranes formed from interconnected waterproofing membranes over the long term and thus result in leaks.
  • Mobile welding devices are known from the prior art, which unroll a waterproofing membrane to be connected to a substrate and/or a substrate from a roll, successively a section, area or piece of the underside of the waterproofing membrane and, if necessary, a corresponding section, area or Adequately heat a piece of substrate and/or substrate and immediately after heating press the heated sections, areas or pieces of waterproofing membrane from above or from the top onto the substrate and/or substrate and the heated sections, areas or pieces connect the waterproofing sheet to the underlay and/or the subsurface when it cools down (again).
  • a sealing sheet to be connected to a base and/or a substrate is unrolled from a roll when the welding process is carried out
  • a previously completely unrolled and placed on a base and/or a substrate for connection with the underlay and/or the substrate correctly po- Positioned sealing sheet is lifted in sections, areas or pieces by a welding device in order to adequately heat the underside of the sealing sheet in sections, areas or pieces and, if necessary, a corresponding section, area or piece of the substrate and/or the subsoil , wherein the heated sections, areas or pieces of the sealing sheet are pressed immediately after the heating on the top side or from the top on the base and / or the subsoil and the heated sections, areas or pieces of the sealing sheet with the base and / or connect to the substrate when it cools down (again).
  • Welding devices of this type heat the underside of a waterproofing membrane and, if appropriate, corresponding upper-side areas of the substrate and/or the substrate, often using fluid burners which are applied in a connection area to a section, area or piece of the underside of a waterproofing membrane and, if appropriate, also to a respective corresponding section or area at the same time or pieces are directed or can be directed at the top of the substrate and/or the substrate.
  • a very high heat output can be achieved with fluid burners.
  • fluid torches directed or directable directly into a joint area mean the presence of open flames just as with hand-held fluid torches.
  • fluid torches require the provision of a supply of highly combustible fluids at the welding apparatus, e.g. corresponding reservoirs and supply lines. Such welding devices therefore harbor a high risk potential (immanent risk of fire and explosion), which is why the use of such welding devices is already partially prohibited or at least often undesirable.
  • infrared heating elements have the disadvantage that heating in a connection area between two sealing membranes or generally between a sealing membrane and a substrate and/or a substrate is not possible.
  • infrared heating elements is also rather inefficient and welding devices with infrared heating elements that are operated by means of fluid burner(s) harbor a high risk potential.
  • the present invention is therefore based on the object to propose a way of securely and efficiently connecting sealing membranes to a substrate and/or a substrate, in particular over the entire surface.
  • the electric hot wedge heating device of a mobile welding device has an electrically energizable heating cartridge with a preferred longitudinal axis of the heating cartridge parallel to the transverse direction and at least two heating wedges with a blunt end and a pointed end, the heating wedges being arranged on the heating cartridge at a distance along the preferred longitudinal axis of the heating cartridge.
  • the heating cartridge is a supporting element for the heating wedges arranged on the heating cartridge and partly also for the supporting frame arrangement of a welding device according to the invention, since the heating cartridge extends in the transverse direction between two longitudinally opposite lateral parts or elements (longitudinally supporting frame elements or the like) of the supporting frame arrangement .
  • the sealing sheet is guided through such a mobile welding device over a respective upper side of the hot wedges and, in the case of direct contact between the underside of the sealing sheet and the
  • the heating wedges heated by the heating cartridges are heated by thermal energy transfer via heat conduction from the heating wedges to the sealing membrane in a contact area to such an extent that the material of the sealing membrane is plasticized and can then be bonded directly to the substrate and/or the subsurface.
  • a sealing sheet is pressed or pressed onto the base and/or the substrate after heating and plasticizing.
  • a mobile welding device can have at least one pressure roller or the like, with which pressure is exerted from the top onto the heated and plasticized sealing sheet to be connected to a base/and/or substrate.
  • the pinch roller is preferably also (rotatably) mounted on the support frame assembly and can also be used as a roller or one of the rollers, wheels or The like serve to move the mobile welding device. If a full-area connection of a sealing strip to a substrate and/or a substrate is provided, the sealing strip is heated by the heating wedges of the electric hot wedge heating device of a mobile welding device according to the invention in an area extending over its entire width.
  • the distance between directly adjacent hot wedges is to be selected in such a way that, despite the distance, the sealing sheet is or can be heated evenly and adequately in the contact area over the entire width of the sealing sheet.
  • the pressing/pressing of a sealing membrane that has been heated over its entire width onto the base and/or the substrate then also takes place over the entire width of the sealing membrane.
  • the hot wedge or wedges of a hot wedge heating device of a mobile welding device according to the invention can be heated by means of the heating cartridge of the hot wedge heating device on which the hot wedge or wedges are arranged.
  • the hot wedges can all be identical, but this is not mandatory.
  • Different hot wedges of a hot wedge heating device can be designed at least with different widths, the width of a hot wedge corresponding to the transverse direction of a mobile welding device according to the invention.
  • a different design of the hot wedges of a hot wedge heating device with regard to the longitudinal sectional contour shape and longitudinal sectional contour extensions is less advantageous.
  • the hot wedge or the hot wedges of a hot wedge heating device of a mobile welding device according to the invention can be designed in such a way that there is regularly a sufficient contact surface for adequate heat transfer between an underside of the hot wedge or hot wedges and a top side of the base and/or the subsurface.
  • Hot wedges of a hot wedge heating device of a mobile welding device can be made from a metallic material (such as aluminum or copper) or a metallic alloy (such as chrome steel) or from a ceramic material (such as silicon carbide).
  • the hot wedges can also have temperature probes for measuring and/or controlling the hot wedge temperatures.
  • An electrically energizable heating cartridge of an electric hot wedge heating device of a mobile welding device consists, for example, of an elongate hollow body ('tube') closed at one longitudinal end, which is preferably made of a highly thermally conductive and heat-resistant metallic material.
  • One or more electrical heating elements are arranged in the tube.
  • Such heating elements can be heating coils, for example, which are wound around a carrier body made of an electrically insulating, heat-resistant material (eg a ceramic material).
  • Several heating coils can be wound around a common carrier body, but each heating coil can also be wound around a separate carrier body.
  • a respective section of the heating cartridge can preferably be heated with each heating coil along the preferred longitudinal axis of the heating cartridge, i.e.
  • a heating cartridge of a hot wedge heating device of a mobile welding device preferably has sections or segments which are adjacent or follow one another along the preferred longitudinal axis of the heating cartridge and which can be heated separately.
  • the heating coils or generally heating elements of a heating cartridge are in a suitable manner with electrical (connection) contacts on the closed longitudinal end of the heating cartridge along the Heating cartridge preferred longitudinal axis opposite second longitudinal end connected, which allow the formation of an external electrical connection to power the heating element or elements of the heating cartridge. It can be provided that all heating elements can be energized at the same time.
  • a heating cartridge comprising several heating elements
  • groups of heating elements can be energized independently of the other groups of heating elements and/or each one Heating element of a heating cartridge can be energized on its own independently of other, further heating elements of the heating cartridge.
  • a heating cartridge can also have one or more sections or segments that cannot be heated and in which accordingly no heating elements are arranged.
  • further electrical (connection) contacts can be provided, for example for external electrical contacting of a probe also arranged inside the hollow body of a heating cartridge for determining the temperature of the heating cartridge. Cavities inside the hollow body of the heating cartridge that are not filled by the heating element(s), carrier body) etc. are typically cast or pressed using an electrically insulating, heat-resistant (ceramic) material, and the interior of the hollow body is thus completely filled.
  • a heating cartridge of a hot wedge heating device of a mobile welding device can be heated in sections or segments along the preferred longitudinal axis of the heating cartridge.
  • sealing membranes can be connected to a base and/or substrate not only over the entire width of a sealing membrane, i.e. over the entire surface, but alternatively only over one or more partial areas of the entire width of a sealing membrane, i.e. not over the entire surface but only over part of the surface.
  • a waterproofing membrane is connected to a base and/or a substrate only in the area of its longitudinal edges. Then at the partial connection the waterproofing membrane with an underlay and/or a sub-surface also only the
  • a hot wedge heater Areas on the longitudinal edges of the waterproofing membrane are heated by a hot wedge heater. Accordingly, only the sections or segments of a heating cartridge of a hot wedge heating device that are assigned or can be assigned to the areas of a sealing membrane to be heated are heated.
  • One or more heating wedges are then preferably arranged on the heating cartridge only in these sections or segments of the heating cartridge of a hot wedge heating device of a mobile welding device according to the invention. Sections or segments of the heating cartridge that are not heated or, if applicable, cannot be heated at all, preferably remain free of heating wedges.
  • hot wedges can be easily fitted and/or removed.
  • hot wedge heating devices preferably configured as integrated units in a mobile welding device according to the invention, comprising at least one heating cartridge and at least one heating wedge arranged on the heating cartridge, to be easily interchangeable with one another.
  • integrated units of hot wedge heating devices can be designed for different circumstances/applications, which can be easily exchanged for one another.
  • the heating cartridge of a hot wedge heating device of a welding device according to the invention preferably extends through the entire width of the hot wedge in a central area that is closer to the blunt end of a hot wedge than to the longitudinally opposite pointed end (hot wedge tip).
  • each hot wedge has at least one corresponding recess in the transverse direction.
  • At least one hot wedge on the heating cartridge of the hot wedge heating device is pivotable and/or rotatable at least a little about the preferred longitudinal axis of the heating cartridge.
  • the rotatable and/or pivotable mounting of a hot wedge on the heating cartridge enables the inclusion of or adaptation to unevenness in a base and/or in a Subsurface when connecting a waterproofing membrane to a base and/or a subsurface using a mobile welding device according to the invention and an improvement in the welding result.
  • At least two heating wedges are pivoted or rotatable independently of one another about the preferred longitudinal axis of the heating cartridge. This creates an even better way of absorbing or adapting to unevenness in a substrate and/or in a substrate when connecting a sealing membrane to a substrate and/or a substrate using a mobile welding device according to the invention and the welding result is improved even further.
  • the pivotability and/or rotation of at least one hot wedge around the preferred longitudinal axis of the heating cartridge is limited or can be limited by means of at least one stop formed in the area of the blunt end on the hot wedge and a corresponding counter-stop.
  • At least one heating wedge is resiliently mounted on the heating cartridge.
  • the hot wedge can be pretensioned in order to improve the pressure and thus the contact with a base and/or a subsurface, if contact is to be made between an underside of the hot wedge and a base and/or subsurface in particular is provided for heating the base and/or the subsoil.
  • a rotation or pivoting of the hot wedge induced by an unevenness can move the hot wedge a bit around the preferred longitudinal axis of the heating cartridge passing the unevenness through the hot wedge or through the mobile welding device as a whole when returning to a starting position and/or a normal position on a base and/or be supported on a substrate.
  • a starting position is the position of a hot wedge relative to the preferred longitudinal axis of the heating cartridge as the axis of rotation of a heating wedge that is pivotable or rotatable about the preferred longitudinal axis of the heating cartridge before deflection due to unevenness and a normal position of a hot wedge the position of a hot wedge relative to the preferred longitudinal axis of the heating cartridge as the axis of rotation of a pivotable or rotatable around the preferred longitudinal axis of the heating cartridge on a completely level surface and/or a completely level surface.
  • a privileged embodiment variant of a mobile welding device includes mounting and fixing the hot wedge heating device in the area of the two opposite longitudinal ends of the heating cartridge along the preferred longitudinal axis of the heating cartridge on one of the opposite longitudinal sides of the support frame arrangement.
  • the heating cartridge of the hot wedge heating device can be mounted in a respective area of its two opposite ends along the preferred longitudinal axis of the heating cartridge in a respective sleeve-like element, which, for example, is itself mounted and fixed with one of the opposite longitudinal sides of the support frame arrangement of the mobile welding device or is an integral part of the respective Long side of the T is tragrahmenan Samuel.
  • the heating cartridge and the sleeve-like elements can be fixed or fixed to one another, for example by means of one or more threaded pins (but can be detached without destroying them).
  • the heating wedges are mounted on the heating cartridge in the vicinity of their greatest thickness and the preferred longitudinal axis of the heating cartridge runs centrally in the transverse direction through the heating wedges.
  • the hot wedges have an asymmetrical longitudinal section profile with an only slightly curved outer longitudinal section contour on the lower side and a more strongly curved outer longitudinal section on the upper side. cutting contour. If a base and/or a substrate is also heated in a welding area when a waterproofing membrane is connected to the base and/or the substrate, only a slight curvature of a hot wedge improves the contact between at least part of the underside of a hot wedge and the substrate and/or the underground. In the case of an ideally flat surface and/or substrate, the underside of a hot wedge would ideally also be completely flat to maximize the contact area and the underside would rest completely on the surface and/or substrate.
  • Increasing the curvature of the top of a hot wedge improves the tracking of a waterproofing sheet over the top of the hot wedge starting in a vicinity of the blunt side of the hot wedge and ending in a vicinity of the hot wedge tip, and maximizes the contact area between the top of the hot wedge and the underside of the waterproofing sheet for optimum sealing Transfer of thermal energy from the hot wedge to the waterproofing membrane.
  • FIG. 1 shows an isometric three-dimensional view of an embodiment of a mobile welding device according to the invention
  • FIG. 2 shows a schematic longitudinal sectional view through the center of the mobile welding device according to FIG. 1 when connecting a sealing membrane to a base on a subsurface;
  • FIG. 3 shows a schematic cross-sectional view through the mobile welding device according to FIGS. 1 and 2 looking at the front end of the mobile welding device along the sectional plane indicated by the line AA in FIG.
  • FIG. 1 shows an embodiment of a mobile welding device 1 according to the invention in a three-dimensional isometric view.
  • the mobile welding device comprises a support frame arrangement 2.
  • the base support frame arrangement of the support frame arrangement 2 is formed by two parallel longitudinal support frame elements 3, 3' which are arranged on opposite longitudinal sides.
  • the supporting frame elements 3, 3' are connected to one another in a rear, upper region of the supporting frame arrangement 2 via two transverse rods 4, 4' which are spaced one behind the other.
  • Another crossbar 5 connects the two supporting frame elements to one another in a lower, front area.
  • the association 'front' and 'back' refers to the intended direction of movement of the mobile welding device 1 during welding, in short the welding direction indicated by the arrow 27 in FIG. 2, the arrowhead pointing forward.
  • a further connection between the two support frame elements 3, 3' results in the rear area via a rotary axis 20 for the pressure roller 6.
  • the pressure roller 6 is mounted with low friction so that it can rotate about the rotary axis 20 and is used for smooth mobility or movement of the mobile welding device 1
  • the pressure roller 6 is used when connecting a sealing membrane 18 to a base 17 and/or a base 16 (see FIG. 2) to exert pressure on a heated sealing strip 18 from the top and to press or press it onto the base 17.
  • the pressure roller 6 is designed with a solid core 21 and tires 22 made of a more elastic material and extending around the outside of the cylindrical surface of the solid core 21 .
  • the pressure roller 6 can optionally be segmented.
  • the pressure roller 6 can have sections or segments that are adjacent or follow one another along a longitudinal axis or axis of rotation 20 of the pressure roller 6 .
  • the pressure roller 6 can have sections or segments which correspond to sections or segments of a heating cartridge 14 or to sections or segments of a hot wedge 13 of a hot wedge device 13, 14 or to hot wedges 13 of a hot wedge device 13, 14.
  • an additional weight 19 can optionally be arranged above the pressure roller 6, i.e. on the crossbars 4, 4', as a result of which the contact pressure that can be or is being exerted on a sealing sheet 18 by the pressure roller 6 can be increased even further can.
  • a hot wedge heating device 13, 14 extends in a front region, comprising a heating cartridge 14 which carries five identically designed hot wedges 13.
  • the heating cartridge 14 extends along the heating cartridge's preferred longitudinal axis 10 in the transverse direction between the two longitudinal support frame elements 3, 3' of the base support frame arrangement.
  • the heating cartridge 14 is completely covered by the heating wedges 13 arranged on it, in the other Figures 2 and 3 the heating cartridge 14 is only shown in a greatly simplified form, since the sectional views in Figure 2 and in particular in Figure 3 refer to a representation of the interior of the Heater cartridge 14 was dispensed with.
  • the heating cartridge 14 is elongated with a circular cross-section of 16 mm outside diameter.
  • connection contacts 32 for external electrical contacting of the heating cartridge are provided on one of the two opposite ends along the preferred longitudinal axis 10 of the heating cartridge, as shown in FIG. can be taken.
  • the connection contacts 32 include contacts for supplying power to the heating elements inside the heating cartridge 14 and for contacting a thermal probe, which is also arranged inside, for determining the temperature of the heating cartridge for the purpose of controlling the heating cartridge 14 Means for controlling the heating cartridge 14 have been omitted in the figures for reasons of clarity.
  • the metal jacket tube of the heating cartridge 14 is completely closed.
  • the five hot wedges 13 are all identical.
  • the hot wedges 13 each have an axial play - based on the preferred longitudinal axis of the heating cartridge 10 - of slightly more than 1 mm.
  • the heating wedges 13 are mounted on the heating cartridge 14 such that they can be pivoted or rotated about the preferred longitudinal axis 10 of the heating cartridge.
  • the cartridge heater
  • each hot wedge 13 runs through each hot wedge 13 centrally in the area of greatest thickness of each hot wedge 13, whereby, as can be seen in particular from Figure 2, the area of greatest thickness of each hot wedge 13 in the longitudinal direction is significantly closer to the blunt end 15 than to the pointed end End 28 (hot wedge tip) of the hot wedge 13.
  • the underside of the hot wedge 13 has only a slight curvature and is therefore optimized for contacting a substantially flat base 17 and/or a substantially flat base 16, with a certain degree of unevenness of the base 17 and/or the substrate 16 can be taken into account by the slight curvature of the underside of the hot wedges 13 in combination with the pivotable or rotatable mounting of the hot wedges 13 on the heating cartridge 14.
  • the upper side of the hot wedges 13, on the other hand, is significantly more curved and, for optimum contact when guiding a sealing strip 18 over the hot wedges 13, beginning at the respective blunt end
  • the crossbar 5 of the base support frame arrangement acts in its second use as an angle stop with a recess 15 on the outside the blunt side of the hot wedges 13 together.
  • the recess 15 extends at the blunt end of each hot wedge 13 over the entire width of the hot wedge 13.
  • the crossbar 5 then extends through the recess 15 at a certain distance, in particular from the upper edge 30 and the lower edge 31 of the recess 15.
  • a hot wedge 5 is pivoted or turned too far about the preferred longitudinal axis 10 of the heating cartridge, depending on the direction of rotation, either the upper edge 30 hits the top side (in the case of a mathematically positive direction of rotation, with the hot-wedge tip 28 being raised) or the lower edge 31 on the underside (in the case of mathematically negative direction of rotation, with the hot-wedge tip 28 is lowered) on the crossbar 5 and further pivoting or rotation of a hot wedge 5 in the corresponding direction of rotation is prevented.
  • the support frame arrangement 2 of the exemplary embodiment of a mobile welding device 1 according to the invention shown in the figures has, in addition to the basic support frame arrangement, the two longitudinal support frame elements 3, 3' relating to a pre-application frame arrangement comprising two pre-application frame elements 7, 7.
  • the two forward application frame elements 7, T are arranged opposite one another on the long side, running parallel and are connected at the rear end to the base support frame arrangement such that they can be rotated about the preferred longitudinal axis 10 of the heating cartridge.
  • the distance between the two pre-application frame elements 7, 7' in the transverse direction is slightly greater than that of the two longitudinal-side support frame elements 3, 3', so the two pre-application frame elements 7, T are a little further to the outside than the next longitudinal-side support frame element 3, 3'.
  • the two forward application frame elements 7, 7 are connected to one another via a crossbar 8.
  • a pre-roller axle 29 (FIG. 2) which is fixed on both sides to the pre-application frame elements 7, 7 and on which a pre-roller 9 is rotatably mounted.
  • the handle 12/rectangular bracket 11 also makes it easier for an operator to move the mobile welding device 1 by pulling the mobile welding device 1 over the handle 12/rectangular bracket 11.
  • the mobile welding device 1 shown in the figures can be operated manually by an operator will proceed. However, the mobile welding device 1 could also be driven by one or more (electric) motors and then be moved or moved by remote control, with both the pressure roller 6 and the forward roller 9 being able to be a driven roller.
  • a mobile welding device 1 can also be provided with sensors and control devices or the like, which enable the mobile welding device 1 to move automatically/automatically. After an operator has inserted one end of a sealing sheet 18 into the mobile welding device 1, the mobile welding device 1 could then completely connect the sealing sheet 18 to a substrate 17 and/or a substrate 16 without any further action by an operator.
  • the mobile welding device 1 according to FIG. 2 is another sealing strip or arrangement of sealing strips that is already connected to a substrate 16 or are.
  • the substrate 16 can be a concrete ceiling construction to be sealed against water.
  • a sealing strip 18 to be connected to a base 17 and/or a base 16 is first completely rolled out and aligned on the base 17 and/or the base 16 . At one end of the sealing membrane 18 this is then placed in the mobile welding device 1 such that an end area of the sealing membrane 18 rests with its underside on the upper sides of the welding wedges 13 .
  • the insertion of the waterproofing membrane 18 in the mobile Welding device 1 is facilitated by the ability to pivot or rotate the pre-application frame arrangement.
  • the optional position of the pre-application frame arrangement and handle 12/rectangular bracket 11 indicated by dashed lines in Figure 2 corresponds to a position of the pre-application frame arrangement for inserting a sealing sheet 18 into the mobile welding device 1.
  • One end of the sealing sheet 18 can then be guided more easily under the leading roller 9 and with the underside up the tops of the hot wedges 13 are placed.
  • the feed roller 9 and the entire feed application frame arrangement can optionally be dispensed with.
  • the leading roller 9 improves the contact between a sealing sheet 18 and the heating wedges 13, particularly in the front area or at the blunt end 15 of the heating wedges 13 and thus the transfer of thermal energy from the heating wedges 13 to a sealing sheet 18.
  • the small distance between the The pointed end (hot wedge tip) 28 of the hot wedges 13 and the pressure roller 6 ensures good contact between a sealing sheet 18 and the tops of the hot wedges 13
  • FIG. 3 shows a cross-sectional view through the mobile welding device 1, the corresponding sectional plane being indicated in FIG. 2 by the line AA.
  • the illustration in FIG. 3 concentrates on the hot wedge heating device 13, 14 and its arrangement on and connection to the supporting frame arrangement 2 of the mobile welding device 1, so the illustration in FIG some parts that are not relevant for this, such as the leading roller 9, are dispensed with.
  • the heating cartridge 14 of the hot wedge heating device 13, 14 is mounted in the region of its two opposite ends along the preferred longitudinal axis 10 of the heating cartridge in a (one-sided) flange sleeve 23, 23'.
  • each flange sleeve 23, 23' is secured against moving out of its position in the passage in the respective associated support frame element 3, 3' in opposite directions parallel to the preferred longitudinal axis 10 of the heating cartridge.
  • the flange sleeves 23, 23' are secured against moving out of their position in the duct in the respective associated support frame element 3, 3' in directions parallel to the preferred longitudinal axis 10 of the heating cartridge by means of a peripheral ring around each flange sleeve 23, 23' on the outside Securing ring 25, 25', which abuts against the respective longitudinal side of the rectangular bracket 11 on the outside of the rectangular bracket 11 opposite the respective flange of a flange sleeve 23, 23'.
  • the pre-application frame arrangement around the Heating cartridge preferred longitudinal axis 10 is mounted pivotably or rotatably bar and to facilitate the pivoting or rotation of the pre-application frame assembly on the part of an operator, this is coupled to the rectangular bracket 11.
  • the retaining rings 25, 25' are each fixed to the associated flange sleeve 23, 23' by means of a threaded pin 26, 26' inserted into a radial bore.
  • a bore for a threaded pin 24, 24' extends through the flange of the flanged sleeves 23, 23' in the radial direction in order to fix the heating cartridge 14 and the flanged sleeves 23, 23' to one another.

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Abstract

The present disclosure relates to a mobile welding device (1) for the surface-to-surface connection of a sealing sheet to a base and/or to a substrate, comprising: - at least one carrier frame assembly (2), which can be moved on the base and/or on the substrate; and - an electric heating-wedge heating apparatus (13), which extends between two opposite longitudinal sides of the carrier frame assembly in a transverse direction; wherein the electric heating-wedge heating apparatus (13) has at least one heating cartridge, to which electric current can be supplied and which has a heating-cartridge preferred longitudinal axis parallel to the transverse direction, and at least two heating wedges, which have a blunt end and a pointed end, the heating wedges being disposed on the heating cartridge such that the heating wedges are spaced apart along the heating-cartridge preferred longitudinal axis (10).

Description

Leister Technologies AG, 12. Juli 2022 6056 Kägiswil, Schweiz; AE/K/M/me Leister Technologies AG, July 12, 2022 6056 Kaegiswil, Switzerland; AE/K/M/me
480/376 PCT Heizkeilschweißvorrichtung zur flächigen Verbindung von Abdichtungs bahnen mit einer Unterlage und/oder einem Untergrund 480/376 PCT hot wedge welding device for the surface connection of waterproofing membranes with a base and/or a substrate
Beschreibung Description
Die Erfindung betrifft eine mobile Schweißvorrichtung zur flächigen Verbindung einer Abdichtungsbahn mit einer Unterlage und/oder einem Untergrund, umfassend zumindest eine auf der Unterlage und/oder dem Untergrund verfahrbare Tragrahmenanordnung und eine sich zwischen zwei gegenüberliegenden Längsseiten der T ragrahmenanordnung in einer Querrichtung erstreckende elektrische Heizkeilheizeinrichtung. The invention relates to a mobile welding device for the surface connection of a waterproofing membrane to a base and/or a subsurface, comprising at least one support frame arrangement that can be moved on the base and/or the subsurface and an electrical hot wedge heating device that extends in a transverse direction between two opposite longitudinal sides of the support frame arrangement.
Der Begriff der Abdichtbahn schließt insbesondere Bahnen auf Basis von Bitumen und modifiziertem Bitumen ein, ist darauf jedoch nicht beschränkt. Der Begriff bezieht sich auch allgemein auf Thermoplastbahnen, also Bahnen aus einem thermo plastischen Material inklusive thermoplastischer Kunststoffbahnen. The term sealing sheet includes, in particular, sheets based on bitumen and modified bitumen, but is not limited to them. The term also refers generally to thermoplastic webs, ie webs made of a thermoplastic material including thermoplastic webs.
Derartige Abdichtungsbahnen kommen vielfach zur Anwendung, wenn große und im Wesentlichen ebene und horizontale bzw. nur leicht gegen eine Horizontale geneigte Flächen gegen ein Eindringen von Flüssigkeiten abgedichtet werden sollen. Abdichtungsbahnen werden daher häufig als Dachabdichtung (Dachhaut) von (Flach-)Dächern zum Schutz vor dem Eindringen von Wasser in ein Gebäude ver- wendet. Dabei werden die Abdichtungsbahnen mit einer Unterlage bzw. einem Untergrund, welche(r) etwa aus einer bereits verlegten Lage Abdichtungsbahnen, aus anderen verschiedenen T ragkonstruktionen des Dachs oder einer Mischung daraus bestehen kann, in einem Schweißprozess verbunden. Insbesondere werden die Abdichtungsbahnen überlappend verlegt, um das Eindringen von Wasser in Zwischenräume zwischen einzelnen Abdichtungsbahnen zu verhindern. Die Abdichtungsbahnen werden dabei häufig sowohl über ihre gesamte Breite als auch entlang ihrer gesamten Längsausdehnung, kurz ,vollflächig‘, mit einer Unterlage und/oder einem Untergrund verbunden. Bitumenartige bzw. bitumenbasierte Ab dichtungsbahnen im Dachbereich weisen typischerweise eine Breite von rund 1 m auf. Such sealing membranes are often used when large and essentially flat and horizontal surfaces or surfaces that are only slightly inclined to the horizontal are to be sealed against the ingress of liquids. Sealing membranes are therefore often used as a roof seal (roof skin) on (flat) roofs to protect against the ingress of water into a building. turns. The sealing membranes are connected in a welding process to a base or substrate, which can consist of a layer of sealing membranes that has already been laid, other different supporting structures of the roof or a mixture of these. In particular, the waterproofing membranes are laid in an overlapping manner in order to prevent water from penetrating into the gaps between individual waterproofing membranes. The sealing membranes are often connected to a substrate and/or a substrate over their entire width as well as along their entire length, in short “full surface”. Bitumen-type or bitumen-based waterproofing membranes in the roof area are typically around 1 m wide.
Eine bekannte und vielfach angewendete Methode zum Verbinden von Abdichtungsbahnen mit einer Unterlage und/oder einem Untergrund werden die üblicherweise in Rollen gelieferten Abdichtungsbahnen zunächst auf dem abzudichtenden Untergrund ausgerollt, ausgerichtet und danach wieder aufgerollt. Anschließend werden ein aufgerollter Abschnitt der Abdichtungsbahn und ein der Größe nach entsprechender Abschnitt der Unterlage und/oder des Untergrunds mittels eines mit Gas betriebenen Handbrenners erhitzt. Erst wenn beide Abschnitte hinreichend erhitzt worden sind, wird die aufgerollte Bitumenbahn beispielsweise mit dem Fuß teilweise abgerollt und auf dem Untergrund festgetreten. Dieser Schritt wird so lange wiederholt, bis eine gesamte Abdichtungsbahn abgerollt und mit der Unterlage und/oder dem Untergrund verbunden ist. A well-known and widely used method for connecting waterproofing membranes to a substrate and/or a substrate, the waterproofing membranes, which are usually supplied in rolls, are first rolled out onto the substrate to be sealed, aligned and then rolled up again. A rolled-up section of the waterproofing membrane and a correspondingly sized section of the underlay and/or the substrate are then heated using a hand-held gas torch. Only when both sections have been sufficiently heated is the rolled-up bitumen sheet partially unrolled, for example with the foot, and trampled on to the ground. This step is repeated until an entire waterproofing membrane has been unrolled and bonded to the base and/or subsurface.
Die vorstehend beschriebene Methode erscheint zunächst zwar simpel und unkompliziert, jedoch ist diese Vorgehensweise insbesondere bei großen abzudichtenden Flächen sehr arbeits- und zeitintensiv, da eine die Methoden anwendende Person (Dachdecker etc.) fortwährend den Gasbrenner in einer Hand halten und führen, die aufgerollte Abdichtungsbahn mit dem Fuß abrollen und an der Unterlage und/oder dem Untergrund andrücken muss. Bekannte Nachteile dieser Vorgehensweise ist etwa, dass Abdichtungsbahnen mit der Unterlage bzw. dem Untergrund nicht vollständig, also nicht vollflächig, verbunden sind, wenn die Abdichtungsbahnen bzw. die Unterlage und/oder der Untergrund mittels des Handbrenners nicht ausreichend oder ungleichmäßig erwärmt wurden. Dies kann zu undichten Stellen führen, die später nur unter sehr großem Aufwand aufgespürt werden können. Des Weiteren kann es bei dieser Methode leicht zu einer lokalen Überhitzung der Abdichtungsbahnen kommen, was insbesondere bei der Verarbeitung von Thermoplastbahnen auf Basis von Bitumen nach dem Abkühlen zu einer Versprödung des Materials führen kann. Ein dadurch hervorgerufener Mangel an Elastizität der Abdichtungsbahnen kann auf Dauer zu Rissen in etwa aus miteinander verbundenen Abdichtungsbahnen ausgebildeten Dachhäuten führen und somit Undichtigkeiten zur Folge haben. The method described above may appear simple and uncomplicated at first, but this procedure is very labor-intensive and time-consuming, especially in the case of large areas to be sealed, since a person using the methods (roofer, etc.) constantly holds and guides the gas burner in one hand and the rolled-up sealing membrane roll off with the foot and press against the base and/or the subsoil. Known disadvantages of this procedure are, for example, that sealing membranes are not completely connected to the substrate or the subsurface, i.e. not over the entire surface, if the sealing membranes or the base and/or the subsurface were not heated sufficiently or unevenly with the hand torch. This can lead to leaks that can only be detected later with great effort. Furthermore, this method can easily lead to local overheating of the waterproofing membranes, which can lead to embrittlement of the material after cooling, especially when processing thermoplastic membranes based on bitumen. A resulting lack of elasticity in the waterproofing membranes can lead to cracks in the roof membranes formed from interconnected waterproofing membranes over the long term and thus result in leaks.
Aus dem Stand der Technik sind verschiedene Ansätze bekannt, die Probleme der vorstehend beschriebenen Vorgehensweise hinsichtlich des Arbeits- und Zeitauf wands wie auch des gleichmäßigen und adäquaten Eintrags von Wärmeenergie in eine mit einer Unterlage und/oder einem Untergrund insbesondere vollflächig zu verbindenden Abdichtungsbahn und gegebenenfalls zusätzlich auch in die Unterlage und/oder den Untergrund zu lösen. So sind aus dem Stand der Technik mobile Schweißvorrichtungen bekannt, die eine mit einer Unterlage und/oder einem Untergrund zu verbindende Abdichtungsbahn von einer Rolle abrollen, sukzessive einen Abschnitt, Bereich oderein Stück der Unterseite der Abdichtungsbahn und ge gebenenfalls einen jeweils korrespondierenden Abschnitt, Bereich oder Stück der Unterlage und/oder des Untergrunds adäquat erwärmen und die erwärmten Abschnitte, Bereiche oder Stücke der Abdichtungsbahn unmittelbar im Nachgang zur Erwärmung oberseitig bzw. von der Oberseite her auf der Unterlage und/oder dem Untergrund andrücken und sich die erwärmten Abschnitte, Bereiche oder Stücke der Abdichtungsbahn mit der Unterlage und/oder dem Untergrund beim (Wieder- )Erkalten verbinden. Sofern nicht vorgesehen ist, dass eine mit einer Unterlage und/oder einem Untergrund zu verbindende Abdichtbahn bei Durchführung des Schweißprozesses von einer Rolle abgerollt wird, kann alternativ vorgesehen sein, dass eine vorher vollständig abgerollte und auf einer Unterlage und/oder einem Untergrund zur Verbindung mit der Unterlage und/oder dem Untergrund korrekt po- sitionierte Abdichtungsbahn von einer Schweißvorrichtung abschnitts-, bereichs- o- der stückweise angehoben wird, um die Unterseite der Abdichtungsbahn sukzessive abschnitts-, bereichs- oder stückweise und gegebenenfalls jeweils einen korrespondierenden Abschnitt, Bereich oder Stück der Unterlage und/oder des Untergrunds adäquat zu erwärmen, wobei die erwärmten Abschnitte, Bereiche oder Stü cke der Abdichtungsbahn unmittelbar im Nachgang zur Erwärmung oberseitig bzw. von der Oberseite her auf der Unterlage und/oder dem Untergrund andrückt werden und sich die erwärmten Abschnitte, Bereiche oder Stücke der Abdichtungsbahn mit der Unterlage und/oder dem Untergrund beim (Wieder-)Erkalten verbinden. Various approaches are known from the prior art, which solve the problems of the above-described procedure in terms of work and time expenditure as well as the uniform and adequate input of thermal energy into a sealing membrane to be connected to a substrate and/or a substrate, in particular over the entire surface, and possibly additionally also to dissolve in the underlay and/or the subsoil. Mobile welding devices are known from the prior art, which unroll a waterproofing membrane to be connected to a substrate and/or a substrate from a roll, successively a section, area or piece of the underside of the waterproofing membrane and, if necessary, a corresponding section, area or Adequately heat a piece of substrate and/or substrate and immediately after heating press the heated sections, areas or pieces of waterproofing membrane from above or from the top onto the substrate and/or substrate and the heated sections, areas or pieces connect the waterproofing sheet to the underlay and/or the subsurface when it cools down (again). Unless it is provided that a sealing sheet to be connected to a base and/or a substrate is unrolled from a roll when the welding process is carried out, it can alternatively be provided that a previously completely unrolled and placed on a base and/or a substrate for connection with the underlay and/or the substrate correctly po- Positioned sealing sheet is lifted in sections, areas or pieces by a welding device in order to adequately heat the underside of the sealing sheet in sections, areas or pieces and, if necessary, a corresponding section, area or piece of the substrate and/or the subsoil , wherein the heated sections, areas or pieces of the sealing sheet are pressed immediately after the heating on the top side or from the top on the base and / or the subsoil and the heated sections, areas or pieces of the sealing sheet with the base and / or connect to the substrate when it cools down (again).
Derartige Schweißvorrichtungen erwärmen die Unterseiten einer Abdichtungsbahn sowie gegebenenfalls korrespondierende oberseitige Bereiche der Unterlage und/oder des Untergrunds häufig mittels Fluidbrennern, die in einem Verbindungsbereich auf einen Abschnitt, Bereich oder ein Stück der Unterseite einer Abdichtungsbahn und gegebenenfalls zugleich auch auf einen jeweiligen korrespondierenden Abschnitt, Bereich oder Stück an der Oberseite der Unterlage und/oder des Untergrunds gerichtet oder richtbar sind. Mit Fluidbrennern kann eine sehr hohe Heizleistung erreicht werden. Allerdings bedeuten direkt in einen Verbindungsbereich gerichtete oder richtbare Fluidbrenner genauso wie bei Handfluidbrennern das Vorliegen offener Flammen. Zudem erfordern Fluidbrennerdas Vorsehen einer Versorgung mit hochbrennbaren Fluiden an der Schweißvorrichtung, also u. a. ent sprechende Vorratsbehälter und Versorgungsleitungen. Daher bergen derartige Schweißvorrichtungen ein hohes Gefahrenpotential (immanente Brand- und Explosionsgefahr), weshalb der Einsatz derartige Schweißvorrichtu ngen bereits teilweise untersagt oder zumindest vielfach unerwünscht ist. Welding devices of this type heat the underside of a waterproofing membrane and, if appropriate, corresponding upper-side areas of the substrate and/or the substrate, often using fluid burners which are applied in a connection area to a section, area or piece of the underside of a waterproofing membrane and, if appropriate, also to a respective corresponding section or area at the same time or pieces are directed or can be directed at the top of the substrate and/or the substrate. A very high heat output can be achieved with fluid burners. However, fluid torches directed or directable directly into a joint area mean the presence of open flames just as with hand-held fluid torches. In addition, fluid torches require the provision of a supply of highly combustible fluids at the welding apparatus, e.g. corresponding reservoirs and supply lines. Such welding devices therefore harbor a high risk potential (immanent risk of fire and explosion), which is why the use of such welding devices is already partially prohibited or at least often undesirable.
Alternative Lösungen mit Heißluft oder allgemein Heißgas, das in einem Verbindungsbereich zur Erwärmung eines Abschnitts, Bereichs oder Stücks der Unterseite einer Abdichtungsbahn auf diesen Abschnitt, Bereich oder Stück und gegebenenfalls zusätzlich auf einen korrespondierenden Abschnitt, Bereich oder Stück an der Oberseite einer Unterlage und/oder eines Untergrunds gelenkt wird, haben den Nachteil, dass derartige Schweißvorrichtungen eher ineffizient sind. Ein signi- fikanterTeil der Wärmeenergie der Heißgasströmung wird an die Umgebung abgegeben und steht nicht zur Erwärmung der Abdichtbahn sowie gegebenenfalls der Unterlage und/oder des Untergrunds zur Verfügung. Bei der Erzeugung eines Heißgasstroms mittels eines oder mehrere Fluidbrenner weisen solche Schweißvorrichtungen im Wesentlichen die gleichen Nachteile auf wie die Lösungen, bei denen Fluidbrenner direkt in den Verbindungsbereich gerichtet sind. Lediglich das Vorsehen offener Flammen kann vermieden werden. Zudem sind die bekannten derartigen Schweißvorrichtungen groß und schwer. Alternative Heißgas-Schweißvorrichtungen, wobei ein heißer Gasstrom unter Verwendung elektrischer Heizelemente generiert wird, haben wegen der schon erwähnten Probleme mit der Energieeffizienz und dem daraus resultierenden hohen Bedarf an elektrischer Energie hohe Anforderungen an die Stromversorgung und den elektrischen Anschluss. Alternative solutions with hot air or hot gas in general, which is applied in a connection area for heating a section, area or piece of the underside of a waterproofing membrane to this section, area or piece and optionally additionally to a corresponding section, area or piece on the upper side of a base and/or a substrate, have the disadvantage that such welding devices are rather inefficient. a signi- A significant part of the thermal energy of the hot gas flow is given off to the environment and is not available for heating the sealing membrane and possibly the underlay and/or the subsoil. When generating a stream of hot gas by means of one or more fluid burners, such welding devices essentially have the same disadvantages as the solutions in which fluid burners are directed directly into the connection area. Only the provision of open flames can be avoided. In addition, the known welding devices of this type are large and heavy. Alternative hot gas welding devices, in which a hot gas stream is generated using electrical heating elements, have high demands on the power supply and the electrical connection because of the energy efficiency problems already mentioned and the resulting high electrical energy requirement.
Dreiphasige Anschlüsse mit 3 · 230V je 16A sind üblich auf Baustellen, höhere Stromstärken sind nicht überall möglich. Die maximale Leistung des Geräts ist deshalb limitiert auf 11 kW (400V 16A · V3 = 11 kW). Um typische meterbreite Abdich tungsbahnen mit einer Unterlage und/oder einem Untergrund vollflächig verbinden zu können, muss die notwendige Wärmeenergie zur Erwärmung der Abdichtungs bahn sowie gegebenenfalls der Unterlage und/oder des Untergrunds effizient generiert und in die Abdichtungsbahn sowie gegebenenfalls in die Unterlage und/oder der Untergrund eingebracht werden. Ansonsten kann das vorstehend angegebene Limit für die Stromversorgung regelmäßig nicht eingehalten werden. Three-phase connections with 3 · 230V each 16A are common on construction sites, higher currents are not possible everywhere. The maximum power of the device is therefore limited to 11 kW (400V 16A V3 = 11 kW). In order to be able to connect typical meter-wide waterproofing membranes to an underlay and/or a subsurface over the entire surface, the thermal energy required to heat the waterproofing membrane and, if applicable, the underlay and/or the subsurface must be efficiently generated and fed into the waterproofing membrane and, if necessary, the underlay and/or the subsoil are introduced. Otherwise, the above limit for the power supply can regularly not be met.
Bei zudem aus dem Stand der Technik bekannten Lösungen umfassend Infrarotheizelemente haben den Nachteil, dass Heizen in einem Verbindungsbereich zwischen zwei Abdichtungsbahnen bzw. allgemein zwischen einer Abdichtungsbahn und einer Unterlage und/oder einem Untergrund damit nicht möglich ist. Auch die Verwendung von Infrarotheizelementen ist eher ineffizient und Schweißvorrichtungen mit Infrarotheizelementen, die mittels Fluidbrenner(n) betrieben werden, bergen wiederum ein hohes Gefahrenpotential. In addition, known from the prior art solutions comprising infrared heating elements have the disadvantage that heating in a connection area between two sealing membranes or generally between a sealing membrane and a substrate and/or a substrate is not possible. The use of infrared heating elements is also rather inefficient and welding devices with infrared heating elements that are operated by means of fluid burner(s) harbor a high risk potential.
Ausgehend von den in den vorstehenden Abschnitten diskutieren Nachteilen des Stands der Technik liegt der vorliegenden Erfindung daher die Aufgabe zugrunde, eine Möglichkeit vorzuschlagen, Abdichtungsbahnen sicher und effizient mit einer Unterlage und/odereinem Untergrund insbesondere vollflächig zu verbinden. Proceeding from the disadvantages of the prior art discussed in the preceding paragraphs, the present invention is therefore based on the object to propose a way of securely and efficiently connecting sealing membranes to a substrate and/or a substrate, in particular over the entire surface.
Die Aufgabe wird erfindungsgemäß durch eine mobile Schweißvorrichtung nach Anspruch 1 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung sind den rückbezogenen Ansprüchen zu entnehmen. The object is achieved according to the invention by a mobile welding device according to claim 1. Further advantageous configurations of the invention can be found in the dependent claims.
Demnach weist die elektrische Heizkeilheizeinrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung eine elektrisch bestrombare Heizpatrone mit einer Heizpatronenvorzugslängsachse parallel zu der Querrichtung und wenigstens zwei Heizkeile mit einem stumpfen Ende und einem spitzen Ende auf, wobei die Heizkeile beabstandet entlang der Heizpatronenvorzugslängsachse an der Heizpatrone angeordnet sind. Die Heizpatrone ist dabei ein tragendes Element für die an der Heizpatrone angeordneten Heizkeile und teilweise auch für die Tragrahmenanordnung einer erfindungsgemäßen Schweißvorrichtung, da sich die Heizpatrone in Querrichtung zwischen zwei längsseitig gegenüberliegenden seitlichen Teilen oder Elementen (längsseitigen T ragrahmenelementen oder dergleichen) der Tragrah- menanordnung erstreckt. Zwischen diesen seitlichen Teilen der T ragrahmenanord- nung wird im Zuge der Verbindung einer Abdichtbahn mit einer Unterlage und/oder einem Untergrund durch eine solche mobile Schweißvorrichtung die Abdichtbahn hindurch über eine jeweilige Oberseite der Heizkeile geführt und bei direktem Kontakt zwischen der Unterseite der Abdichtbahn und den über die Heizpatrone be heizten Heizkeilen durch Wärmeenergieübertrag per Wärmeleitung von den Heizkeilen auf die Abdichtbahn in einem Kontaktbereich entsprechend so weit erhitzt, dass das Material der Abdichtbahn plastifiziert und direkt im Anschluss mit der Unterlage und/oder dem Untergrund verbunden werden kann. Dazu wird eine Abdichtbahn nach der Erwärmung und Plastifizierung auf der Unterlage und/oder dem Untergrund angedrückt bzw. angepresst. Hierzu kann eine erfindungsgemäße mobile Schweißvorrichtung etwa zumindest eine Andruckrolle oder dergleichen aufweisen, mit der von der Oberseite her auf die mit einer Unterlage/und/oder einem Untergrund zu verbindende, erwärmte und plastifizierte Abdichtbahn einen Druck ausübt. Die Andruckrolle ist vorzugsweise ebenfalls (drehbar) an der Tragrahmenanordnung gelagert und kann zugleich als eine Rolle bzw. eine der Rollen, Räder oder dergleichen zum Verfahren der mobilen Schweißvorrichtung dienen. Ist eine voll- flächige Verbindung einer Abdichtbahn mit einer Unterlage und/oder einem Untergrund vorgesehen, so wird die Abdichtbahn von den Heizkeilen der elektrischen Heizkeilheizeinrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung in einem sich über ihre gesamte Breite erstreckenden Bereich erwärmt. Der Abstand direkt benachbarter Heizkeile ist dabei so zu wählen, dass trotz des Abstands eine gleichmäßige adäquate Erwärmung der Abdichtbahn im Kontaktbereich über die gesamte Breite der Abdichtbahn erfolgt bzw. erfolgen kann. Das Andrücken/Anpressen einer über ihre gesamte Breite erwärmten Abdichtbahn auf der Unterlage und/oder dem Untergrund erfolgt dann ebenfalls über die gesamte Breite der Abdichtbahn. Accordingly, the electric hot wedge heating device of a mobile welding device according to the invention has an electrically energizable heating cartridge with a preferred longitudinal axis of the heating cartridge parallel to the transverse direction and at least two heating wedges with a blunt end and a pointed end, the heating wedges being arranged on the heating cartridge at a distance along the preferred longitudinal axis of the heating cartridge. The heating cartridge is a supporting element for the heating wedges arranged on the heating cartridge and partly also for the supporting frame arrangement of a welding device according to the invention, since the heating cartridge extends in the transverse direction between two longitudinally opposite lateral parts or elements (longitudinally supporting frame elements or the like) of the supporting frame arrangement . Between these lateral parts of the support frame arrangement, in the course of connecting a sealing sheet to a base and/or a substrate, the sealing sheet is guided through such a mobile welding device over a respective upper side of the hot wedges and, in the case of direct contact between the underside of the sealing sheet and the The heating wedges heated by the heating cartridges are heated by thermal energy transfer via heat conduction from the heating wedges to the sealing membrane in a contact area to such an extent that the material of the sealing membrane is plasticized and can then be bonded directly to the substrate and/or the subsurface. For this purpose, a sealing sheet is pressed or pressed onto the base and/or the substrate after heating and plasticizing. For this purpose, a mobile welding device according to the invention can have at least one pressure roller or the like, with which pressure is exerted from the top onto the heated and plasticized sealing sheet to be connected to a base/and/or substrate. The pinch roller is preferably also (rotatably) mounted on the support frame assembly and can also be used as a roller or one of the rollers, wheels or The like serve to move the mobile welding device. If a full-area connection of a sealing strip to a substrate and/or a substrate is provided, the sealing strip is heated by the heating wedges of the electric hot wedge heating device of a mobile welding device according to the invention in an area extending over its entire width. The distance between directly adjacent hot wedges is to be selected in such a way that, despite the distance, the sealing sheet is or can be heated evenly and adequately in the contact area over the entire width of the sealing sheet. The pressing/pressing of a sealing membrane that has been heated over its entire width onto the base and/or the substrate then also takes place over the entire width of the sealing membrane.
Der oder die Heizkeile einer Heizkeilheizvorrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung sind mittels der Heizpatrone der Heizkeilheizvorrichtung, an der der oder die Heizkeile angeordnet sind, beheizbar. Die Heizkeile können alle identisch ausgebildet sein, was jedoch nicht zwingend ist. Verschiedene Heizkeile einer Heizkeilheizvorrichtung können zumindest unterschiedlich breit ausgebildet sein, wobei die Breite eines Heizkeiles mit der Querrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung korrespondiert. Eine unterschiedliche Ausbildung der Heizkeile einer Heizkeilheizvorrichtu ng hinsichtlich der Längsschnittkonturform und Längschnittkonturausdehnungen ist hingegen weniger vorteilhaft. Sofern vorgesehen ist, nicht nur eine mit einer Unterlage und/oder einem Untergrund zu verbindende Abdichtungsbahn abschnitts-, bereichs- oder stückweise zu erwärmen, sondern auch korrespondierende Abschnitte, Bereiche oder Stücke der Unterlage und/oder des Untergrunds, dann sollte(n) der Heizkeil oder die Heizkeile einer Heizkeilheizvorrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung derart ausgebildet sein, dass regelmäßig eine für eine adäquate Wärmeübertragung aus reichende Kontaktfläche zwischen einer Unterseite des Heizkeils oder der Heizkeile und einer Oberseite der Unterlage und/oder des Untergrunds vorliegt. Sinngemäß gilt dies ebenfalls für eine Oberseite des Heizkeils oder der Heizkeile, wobei die Ausbildung einer Oberseite eines Heizkeils weniger Beschränkungen unterworfen ist, da eine Unterlage und/oder ein Untergrund bereits festgelegt (vollständig unflexibel) ist und nicht gegen den Heizkeil oder die Heizkeile gedrückt werden kann. Demgegenüber kann bzw. können ein noch nicht mit einer Unterlage und/oder einem Untergrund verbundene Abdichtbahn oder noch unverbundene Abschnitte, Bereiche oder Stücke einer Abdichtbahn sehr wohl an einer Oberseite eines oder mehrere Heizkeile angedrückt werden und ist bzw. sind bis zum endgültigen Ver binden mit der Unterlage/und oder dem Untergrund weitaus flexibler. Heizkeile einer Heizkeilheizvorrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung können aus einem metallischen Material (etwa Aluminium oder Kupfer) oder einer metallischen Legierung (etwa Chromstahl) oder auch aus einem keramischen Material (beispielsweise Siliciumcarbid) ausgebildet sein. Die Heizkeile können zur Messung und/oder Regelung der Heizkeiltemperaturen auch Temperatursonden aufweisen. The hot wedge or wedges of a hot wedge heating device of a mobile welding device according to the invention can be heated by means of the heating cartridge of the hot wedge heating device on which the hot wedge or wedges are arranged. The hot wedges can all be identical, but this is not mandatory. Different hot wedges of a hot wedge heating device can be designed at least with different widths, the width of a hot wedge corresponding to the transverse direction of a mobile welding device according to the invention. On the other hand, a different design of the hot wedges of a hot wedge heating device with regard to the longitudinal sectional contour shape and longitudinal sectional contour extensions is less advantageous. If it is planned not only to heat a waterproofing membrane to be connected to a substrate and/or a substrate in sections, areas or pieces, but also corresponding sections, areas or pieces of the substrate and/or the substrate, then the The hot wedge or the hot wedges of a hot wedge heating device of a mobile welding device according to the invention can be designed in such a way that there is regularly a sufficient contact surface for adequate heat transfer between an underside of the hot wedge or hot wedges and a top side of the base and/or the subsurface. This also applies analogously to an upper side of the hot wedge or hot wedges, with the formation of an upper side of a hot wedge being subject to fewer restrictions is because a pad and/or substrate is already set (completely inflexible) and cannot be pressed against the hot wedge or wedges. On the other hand, a sealing membrane that has not yet been connected to a substrate and/or a substrate, or sections, areas or pieces of a sealing membrane that have not yet been connected, can very well be pressed onto an upper side of one or more hot wedges and is or are connected to until the final connection the base/and/or the subsoil far more flexible. Hot wedges of a hot wedge heating device of a mobile welding device according to the invention can be made from a metallic material (such as aluminum or copper) or a metallic alloy (such as chrome steel) or from a ceramic material (such as silicon carbide). The hot wedges can also have temperature probes for measuring and/or controlling the hot wedge temperatures.
Eine elektrisch bestrombare Heizpatrone einer elektrischen Heizkeilheizvorrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung besteht etwa aus einem an einem längsseitigen Ende verschlossenen länglichen Hohlkörper (,Rohr‘), welches vorzugsweise aus einem gut wärmeleitfähigen und hitzebeständigen metallischen Material ausgebildet ist. In dem Rohr sind ein oder mehrere elektrische Heizelemente angeordnet. Bei solchen Heizelementen kann es sich zum Beispiel um Heiz wendeln handeln, die um einen T rägerkörper aus einem elektrisch isolierenden, hitzebeständigen Material (z. B. ein keramisches Material) gewickelt sind. Mehrere Heizwendeln können dabei um einen gemeinsamen Trägerkörper gewickelt sein, es kann aber auch jede Heizwendel um einen separaten T rägerkörper gewickelt sein. Vorzugsweise ist mit jeder Heizwendel ein jeweiliger Abschnitt der Heizpatrone entlang der Heizpatronenvorzugslängsachse der Heizpatrone beheizbar, d. h., präferiert weist eine Heizpatrone einer Heizkeilheizeinrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung entlang der Heizpatronenvorzugslängsachse benachbarte bzw. aufeinander folgende Abschnitte oder Segmente auf, die separat beheizbar sind. Die Heizwendeln oder allgemein Heizelemente einer Heizpatrone sind auf geeignete Art und Weise mit elektrischen (Anschluss-)Kon- takten an der dem geschlossenen längsseitigen Ende der Heizpatrone entlang der Heizpatronenvorzugslängsachse gegenüberliegenden zweiten längsseitigen Ende verschaltet, die die Ausbildung einer externen elektrischen Verbindung zur Stromversorgung des oder der Heizelemente der Heizpatrone ermöglichen. Dabei kann vorgesehen sein, dass alle Heizelemente zugleich bestrombar sind. Es kann alternativ bei einer Heizpatrone umfassend mehrere Heizelemente aber auch vorgesehen sein, dass Gruppen von Heizelementen, wobei die Anzahl an Heizelementen einer Gruppe kleiner als die Gesamtzahl an Heizelementen der Heizpatrone, unabhängig von den jeweils anderen Gruppen von Heizelementen bestrombar ist und/oder auch jedes Heizelement einer Heizpatrone für sich alleine unabhängig von anderen, weiteren Heizelementen der Heizpatrone bestrombar ist. Es können bei einer Heizpatrone auch ein oder mehrere Abschnitte respektive Segmente vorhanden sein, die nicht beheizbar sind und in denen dementsprechend keinerlei Heizelemente in angeordnet sind. Neben (Anschluss-)Kontakten zur externen elektrischen Kontaktierung von einem oder mehreren Heizelementen können weitere elektrische (Anschluss-)Kontakte etwa zur externen elektrischen Kontaktierung einer ebenfalls im Inneren des Hohlkörpers einer Heizpatrone angeordneten Sonde zur Bestimmung der Temperatur der Heizpatrone vorgesehen sein. Hohlräume im Inneren des Hohlkörpers der Heizpatrone, die nicht von Heizelement(en), Träger- körperin) usw. ausgefüllt werden, werden typischerweise mittels eines elektrisch isolierenden hitzebeständigen (keramischen) Materials vergossen oder verp resst und somit der Innenraum des Hohlkörpers vollständig ausgefüllt. An electrically energizable heating cartridge of an electric hot wedge heating device of a mobile welding device according to the invention consists, for example, of an elongate hollow body ('tube') closed at one longitudinal end, which is preferably made of a highly thermally conductive and heat-resistant metallic material. One or more electrical heating elements are arranged in the tube. Such heating elements can be heating coils, for example, which are wound around a carrier body made of an electrically insulating, heat-resistant material (eg a ceramic material). Several heating coils can be wound around a common carrier body, but each heating coil can also be wound around a separate carrier body. A respective section of the heating cartridge can preferably be heated with each heating coil along the preferred longitudinal axis of the heating cartridge, i.e. a heating cartridge of a hot wedge heating device of a mobile welding device according to the invention preferably has sections or segments which are adjacent or follow one another along the preferred longitudinal axis of the heating cartridge and which can be heated separately. The heating coils or generally heating elements of a heating cartridge are in a suitable manner with electrical (connection) contacts on the closed longitudinal end of the heating cartridge along the Heating cartridge preferred longitudinal axis opposite second longitudinal end connected, which allow the formation of an external electrical connection to power the heating element or elements of the heating cartridge. It can be provided that all heating elements can be energized at the same time. Alternatively, in the case of a heating cartridge comprising several heating elements, it can also be provided that groups of heating elements, with the number of heating elements in a group being smaller than the total number of heating elements in the heating cartridge, can be energized independently of the other groups of heating elements and/or each one Heating element of a heating cartridge can be energized on its own independently of other, further heating elements of the heating cartridge. A heating cartridge can also have one or more sections or segments that cannot be heated and in which accordingly no heating elements are arranged. In addition to (connection) contacts for external electrical contacting of one or more heating elements, further electrical (connection) contacts can be provided, for example for external electrical contacting of a probe also arranged inside the hollow body of a heating cartridge for determining the temperature of the heating cartridge. Cavities inside the hollow body of the heating cartridge that are not filled by the heating element(s), carrier body) etc. are typically cast or pressed using an electrically insulating, heat-resistant (ceramic) material, and the interior of the hollow body is thus completely filled.
Wie bereits vorstehend angedeutet, kann vorgesehen sein, dass eine Heizpatrone einer Heizkeilheizeinrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung entlang der Heizpatronenvorzugslängsachse abschnittsweise bzw. segment weise beheizbar ist. Damit können Abdichtungsbahnen nicht nur über die gesamte Breite einer Abdichtbahn, also vollflächig, mit einer Unterlage und/oder einem Untergrund verbunden werden, sondern alternativ lediglich über einen oder mehrere Teilbereiche der gesamten Breite einer Abdichtungsbahn, also nicht vollflächig, sondern nur teilflächig. Es kann beispielsweise vorgesehen sein, dass eine Abdich tungsbahn nur im Bereich ihrer längsseitigen Ränder mit einer Unterlage und/oder einem Untergrund verbunden wird. Dann werden bei der teilflächigen Verbindung der Abdichtungsbahn mit einer Unterlage und/oder einem Untergrund auch nur dieAs already indicated above, it can be provided that a heating cartridge of a hot wedge heating device of a mobile welding device according to the invention can be heated in sections or segments along the preferred longitudinal axis of the heating cartridge. This means that sealing membranes can be connected to a base and/or substrate not only over the entire width of a sealing membrane, i.e. over the entire surface, but alternatively only over one or more partial areas of the entire width of a sealing membrane, i.e. not over the entire surface but only over part of the surface. It can be provided, for example, that a waterproofing membrane is connected to a base and/or a substrate only in the area of its longitudinal edges. Then at the partial connection the waterproofing membrane with an underlay and/or a sub-surface also only the
Bereiche an den längsseitigen Rändern der Abdichtungsbahn von einer Heizkeilheizeinrichtung erwärmt. Dementsprechend werden lediglich die Abschnitte res pektive Segmente einer Heizpatrone einer Heizkeilheizvorrichtung beheizt, die den zu erwärmenden Bereichen einer Abdichtungsbahn zugeordnet sind oder zuordenbar sind. Vorzugsweise sind dann auch nur in diesen Abschnitten bzw. Segmenten der Heizpatrone einer Heizkeilheizvorrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung jeweils ein oder mehrere Heizkeile an der Heizpatrone angeordnet. Nicht beheizte oder gegebenenfalls grundsätzlich nicht beheizbare Abschnitte respektive Segmente der Heizpatrone bleiben präferiert frei von Heizkeilen. Günstigerweise kann vorgesehen sein, dass bei einer Heizkeilheizvorrichtung einer erfindungsgemäßen mobilen Schweißvorrichtung Heizkeile einfach zurüstbar und/oder entfernbar sind. Es kann zudem auch vorgesehen sein, dass präferiert als integrierte Einheiten ausgebildete Heizkeilheizvorrichtungen einer erfindungsge mäßen mobilen Schweißvorrichtung umfassend jeweils zumindest eine Heizpatrone und wenigstens einen an der Heizpatrone angeordneten Heizkeil einfach ge geneinander ausgetauscht werden können. So können integrierte Einheiten von Heizkeilheizvorrichtungen für verschiedene Gegebenheiten/Anwendungszwecke ausgebildet werden, die einfach gegeneinander austauschbar sind. Präferiert erstreckt sich die Heizpatrone einer Heizkeilheizvorrichtung einer erfindungsgemä ßen Schweißvorrichtung in einem zentralen Bereich, der näher an dem stumpfen Ende eines Heizkeils als an dem in Längsrichtung gegenüberliegenden spitzen Ende (Heizkeilspitze) liegt, durch die gesamte Breite des Heizkeils hindurch. Jeder Heizkeil weist dafür zumindest eine entsprechende Ausnehmung in Querrichtung auf. Areas on the longitudinal edges of the waterproofing membrane are heated by a hot wedge heater. Accordingly, only the sections or segments of a heating cartridge of a hot wedge heating device that are assigned or can be assigned to the areas of a sealing membrane to be heated are heated. One or more heating wedges are then preferably arranged on the heating cartridge only in these sections or segments of the heating cartridge of a hot wedge heating device of a mobile welding device according to the invention. Sections or segments of the heating cartridge that are not heated or, if applicable, cannot be heated at all, preferably remain free of heating wedges. Advantageously, it can be provided that, in the case of a hot wedge heating device of a mobile welding device according to the invention, hot wedges can be easily fitted and/or removed. Provision can also be made for hot wedge heating devices preferably configured as integrated units in a mobile welding device according to the invention, comprising at least one heating cartridge and at least one heating wedge arranged on the heating cartridge, to be easily interchangeable with one another. In this way, integrated units of hot wedge heating devices can be designed for different circumstances/applications, which can be easily exchanged for one another. The heating cartridge of a hot wedge heating device of a welding device according to the invention preferably extends through the entire width of the hot wedge in a central area that is closer to the blunt end of a hot wedge than to the longitudinally opposite pointed end (hot wedge tip). For this purpose, each hot wedge has at least one corresponding recess in the transverse direction.
Bei einer bevorzugten Ausgestaltungsvariante einer erfindungsgemäßen mobilen Schweißvorrichtung ist vorgesehen, dass zumindest ein Heizkeil an der Heizpatrone der Heizkeilheizeinrichtung wenigstens ein Stück weit um die Heizpatronenvorzugslängsachse schwenkbar und/oder drehbar gelagert ist. Die drehbare und/oder schwenkbare Lagerung eines Heizkeils an der Heizpatrone ermöglicht die Aufnahme von bzw. Anpassung an Unebenheiten in einer Unterlage und/oder in einem Untergrund bei der Verbindung einer Abdichtungsbahn mit einer Unterlage und/oder einem Untergrund mittels einer erfindungsgemäßen mobilen Schweißvorrichtung und einer Verbesserung des Schweißergebnisses. In a preferred embodiment variant of a mobile welding device according to the invention, it is provided that at least one hot wedge on the heating cartridge of the hot wedge heating device is pivotable and/or rotatable at least a little about the preferred longitudinal axis of the heating cartridge. The rotatable and/or pivotable mounting of a hot wedge on the heating cartridge enables the inclusion of or adaptation to unevenness in a base and/or in a Subsurface when connecting a waterproofing membrane to a base and/or a subsurface using a mobile welding device according to the invention and an improvement in the welding result.
Gemäß einer präferierten Ausgestaltungsvariante einer erfindungsgemäßen mobilen Schweißvorrichtung sind zumindest zwei Heizkeile unabhängig voneinander um die Heizpatronenvorzugslängsachse schwenkbar bzw. drehbar gelagert. Dadurch wird eine noch bessere Möglichkeit zur Aufnahme von bzw. Anpassung an Unebenheiten in einer Unterlage und/oder in einem Untergrund bei der Verbindung einer Abdichtungsbahn mit einer Unterlage und/oder einem Untergrund mittels einer erfindungsgemäßen mobilen Schweißvorrichtung geschaffen und das Schweißergebnis noch weiter verbessert. According to a preferred embodiment variant of a mobile welding device according to the invention, at least two heating wedges are pivoted or rotatable independently of one another about the preferred longitudinal axis of the heating cartridge. This creates an even better way of absorbing or adapting to unevenness in a substrate and/or in a substrate when connecting a sealing membrane to a substrate and/or a substrate using a mobile welding device according to the invention and the welding result is improved even further.
Entsprechend einer begünstigten Ausgestaitungsvariante einer erfindungsgemäßen mobilen Schweißvorrichtung ist die Schwenkbarkeit und/oder Drehbarkeit wenigstens eines Heizkeils um die Heizpatronenvorzugslängsachse mittels zumindest eines im Bereich des stumpfen Endes am Heizkeils ausgebildeten Anschlags und einem korrespondierenden Gegenanschlag begrenzt oder begrenzbar. According to an advantageous design variant of a mobile welding device according to the invention, the pivotability and/or rotation of at least one hot wedge around the preferred longitudinal axis of the heating cartridge is limited or can be limited by means of at least one stop formed in the area of the blunt end on the hot wedge and a corresponding counter-stop.
Nach einer favorisierten Ausgestaltungsvariante einer erfindungsgemäßen mobilen Schweißvorrichtung ist zumindest ein Heizkeil federnd an der Heizpatrone gelagert. Durch eine federnde Lagerung eines Heizkeils an der Heizpatrone kann der Heizkeil vorgespannt werden, um den Andruck und somit den Kontakt mit einer Unterlage und/oder einem Untergrund zu verbessern, sofern ein Kontakt mit zwischen einer Unterseite des Heizkeils und einer Unterlage und/odereinem Untergrund insbesondere zur Erwärmung der Unterlage und/oder des Untergrunds vorgesehen ist. Zudem kann durch eine federnde Lagerung und/oder Vorspannung eines Heizkeils durch ein wenigstens Federelement oder dergleichen nach einer Auslenkung des Heizkeils bedingt durch eine Unebenheit, also einer durch eine Unebenheit induzierte Drehung bzw. Schwenkung des Heizkeils ein Stück weit um die Heizpatronenvorzugslängsachse, der Heizkeil nach dem Passieren der Unebenheit durch den Heizkeil bzw. durch die mobile Schweißvorrichtung als Ganzes bei der Rückkehr in eine Ausgangslage und/oder eine Normallage auf einer Unterlage und/oder einem Untergrund unterstützt werden. Eine Ausgangslage ist dabei die Lage eines Heizkeils relativ zu der Heizpatronenvorzugslängsachse als Drehachse eines schwenkbar bzw. drehbar um die Heizpatronenvorzugslängsachse gelagerten Heizkeils vor der Auslenkung bedingt durch eine Unebenheit und eine Normallage eines Heizkeils die Lage eines Heizkeils relativ zu der Heizpatronenvorzugslängsachse als Drehachse eines schwenkbar bzw. drehbar um die Heizpatronenvorzugslängsachse gelagerten Heizkeils auf einer vollständig ebenen Unterlage und/oder einem vollständig ebenen Untergrund. According to a preferred embodiment variant of a mobile welding device according to the invention, at least one heating wedge is resiliently mounted on the heating cartridge. By resiliently mounting a hot wedge on the heating cartridge, the hot wedge can be pretensioned in order to improve the pressure and thus the contact with a base and/or a subsurface, if contact is to be made between an underside of the hot wedge and a base and/or subsurface in particular is provided for heating the base and/or the subsoil. In addition, a spring-loaded mounting and/or prestressing of a hot wedge by at least a spring element or the like after a deflection of the hot wedge caused by an unevenness, i.e. a rotation or pivoting of the hot wedge induced by an unevenness, can move the hot wedge a bit around the preferred longitudinal axis of the heating cartridge passing the unevenness through the hot wedge or through the mobile welding device as a whole when returning to a starting position and/or a normal position on a base and/or be supported on a substrate. A starting position is the position of a hot wedge relative to the preferred longitudinal axis of the heating cartridge as the axis of rotation of a heating wedge that is pivotable or rotatable about the preferred longitudinal axis of the heating cartridge before deflection due to unevenness and a normal position of a hot wedge the position of a hot wedge relative to the preferred longitudinal axis of the heating cartridge as the axis of rotation of a pivotable or rotatable around the preferred longitudinal axis of the heating cartridge on a completely level surface and/or a completely level surface.
Eine privilegierte Ausgestaltungsvariante einer erfindungsgemäßen mobilen Schweißvorrichtung umfasst eine Lagerung und Fixierung der Heizkeilheizvorrichtung im Bereich der beiden gegenüberliegenden längsseitigen Enden der Heizpatrone entlang der Heizpatronenvorzugslängsachse an einer jeweiligen der gegenüberliegenden Längsseiten der Tragrahmenanordnung. Die Heizpatrone der Heizkeilheizvorrichtung kann dabei etwa in einem jeweiligen Bereich ihrer beiden ent lang der Heizpatronenvorzugslängsachse gegenüberliegenden Enden in einem jeweiligen hülsenartigen Element gelagert sein, welches beispielsweise wiederum selbst mit einem jeweiligen der gegenüberliegenden Längsseiten der Tragrahmenanordnung der mobilen Schweißvorrichtung gelagert und fixiert oder integraler Teil der jeweiligen Längsseite der T ragrahmenanordnung ist. Die Heizpatrone und die hülsenartigen Elemente können dabei etwa mittels eines oder mehreren Ge windestiften fest (aber zerstörungsfrei lösbar) aneinander fixierbar oder fixiert sein. A privileged embodiment variant of a mobile welding device according to the invention includes mounting and fixing the hot wedge heating device in the area of the two opposite longitudinal ends of the heating cartridge along the preferred longitudinal axis of the heating cartridge on one of the opposite longitudinal sides of the support frame arrangement. The heating cartridge of the hot wedge heating device can be mounted in a respective area of its two opposite ends along the preferred longitudinal axis of the heating cartridge in a respective sleeve-like element, which, for example, is itself mounted and fixed with one of the opposite longitudinal sides of the support frame arrangement of the mobile welding device or is an integral part of the respective Long side of the T is tragrahmenanordnung. The heating cartridge and the sleeve-like elements can be fixed or fixed to one another, for example by means of one or more threaded pins (but can be detached without destroying them).
Bei einer besonders bevorzugten Ausgestaltungsvariante einer erfindungsgemäßen mobilen Schweißvorrichtung sind die Heizkeile in einer Umgebung ihrer größten Dicke an der Heizpatrone gelagert und die Heizpatronenvorzugslängsachse verläuft zentral in Querrichtung durch die Heizkeile. In a particularly preferred embodiment variant of a mobile welding device according to the invention, the heating wedges are mounted on the heating cartridge in the vicinity of their greatest thickness and the preferred longitudinal axis of the heating cartridge runs centrally in the transverse direction through the heating wedges.
Gemäß einer besonders präferierten Ausgestaltungsvariante eines erfindungsgemäßen mobilen Schweißautomaten weisen die Heizkeile ein asymmetrisches Längsschnittprofil mit einer nur geringfügig gewölbten äußeren unterseitigen Längsschnittkontur und einer stärker gewölbten äußeren oberseitigen Längs- Schnittkontur auf. Sofern eine Unterlage und/oder ein Untergrund bei der Verbindung einer Abdichtungsbahn mit der Unterlage und/oder dem Untergrund in einem Schweißbereich ebenfalls erwärmt wird, verbessert eine nur geringfügige Wölbung eines Heizkeils den Kontakt zwischen zumindest einem Teil einer Heizkeilunterseite und der Unterlage und/oder der Untergrund. Bei einer ideal ebenen Unterlage und/oder einem ideal ebenen Untergrund wäre die Unterseite eines Heizkeils idealerweise zu Maximierung der Kontaktfläche ebenfalls vollständig eben und die Unterseite würde vollständig auf der Unterlage und/oder dem Untergrund aufliegen. Allerdings liegen ideal ebene Unterlagen und/oder Untergründe in der Praxis in der Regel nicht vor und bereits geringfügige Unebenheiten können dazu führen, dass die Unterseiten eines Heizkeils weitgehend den Kontakt mit der Unterlage und/oder dem Untergrund verliert. Durch eine leichte Wölbung der Unterseite bleibt eine signifikante Kontaktfläche auch bei Unebenheiten erhalten. Zudem kommt eine leichte Wölbung der Unterseite einer schwenkbaren und/oder drehbaren Lagerung eines Heizkeils um die Heizpatronenvorzugslängsachse entgegen. Eine stärkere Wölbung der Oberseite eines Heizkeils verbessert die Führung einer Abdichtungsbahn über die Oberseite des Heizkeils beginnend in einer Umgebung der stumpfen Seite des Heizkeils und endend in einer Umgebung der Heizkeilspitze und maximiert die Kontaktfläche zwischen der Oberseite des Heizkeils und der Unterseite der Abdichtungsbahn für eine optimale Übertragung von Wärmeenergie von dem Heizkeil auf die Abdichtungsbahn. According to a particularly preferred embodiment variant of a mobile automatic welding machine according to the invention, the hot wedges have an asymmetrical longitudinal section profile with an only slightly curved outer longitudinal section contour on the lower side and a more strongly curved outer longitudinal section on the upper side. cutting contour. If a base and/or a substrate is also heated in a welding area when a waterproofing membrane is connected to the base and/or the substrate, only a slight curvature of a hot wedge improves the contact between at least part of the underside of a hot wedge and the substrate and/or the underground. In the case of an ideally flat surface and/or substrate, the underside of a hot wedge would ideally also be completely flat to maximize the contact area and the underside would rest completely on the surface and/or substrate. However, ideally level surfaces and/or substrates are usually not present in practice and even minor unevenness can result in the underside of a hot wedge largely losing contact with the surface and/or the substrate. Due to a slight curvature on the underside, a significant contact area is retained even on bumps. In addition, a slight curvature of the underside accommodates a pivotable and/or rotatable mounting of a heating wedge about the preferred longitudinal axis of the heating cartridge. Increasing the curvature of the top of a hot wedge improves the tracking of a waterproofing sheet over the top of the hot wedge starting in a vicinity of the blunt side of the hot wedge and ending in a vicinity of the hot wedge tip, and maximizes the contact area between the top of the hot wedge and the underside of the waterproofing sheet for optimum sealing Transfer of thermal energy from the hot wedge to the waterproofing membrane.
Die vorstehend in der Beschreibung genannten Merkmale und Merkmalskombina tionen sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar. Zur Ausführung der Erfindung müssen nicht alle Merkmale des Anspruchs 1 verwirklicht sein. Auch können einzelne Merkmale des Anspruchs 1 durch andere offenbarte Merkmale oder Merkmalskombinationen ersetzt werden. The features and feature combinations mentioned above in the description and the features and feature combinations mentioned below in the description of the figures and/or shown alone in the figures can be used not only in the combination specified, but also in other combinations or on their own. Not all features of claim 1 have to be realized in order to carry out the invention. Individual features of claim 1 can also be replaced by other disclosed features or combinations of features.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen, der nachfolgenden Beschreibung bevorzugter Ausführungsformen sowie anhand der Zeichnungen, in welchen gleiche oder funktionsgleiche Elemente mit identischen Bezugszeichen versehen sind. Dabei zeigen: Further advantages, features and details of the invention result from the claims and the following description of preferred embodiments as well as with reference to the drawings, in which identical or functionally identical elements are provided with identical reference symbols. show:
Fig. 1 eine isometrische dreidimensionale Ansicht einer Ausgestaltung einer erfindungsgemäßen mobilen Schweißvorrichtung; Fig. 2 eine schematische Längsschnittansicht mittig durch die mobile Schweißvorrichtung gemäß Figur 1 beim Verbinden einer Abdichtungsbahn mit einer Unterlage auf einem Untergrund; und 1 shows an isometric three-dimensional view of an embodiment of a mobile welding device according to the invention; FIG. 2 shows a schematic longitudinal sectional view through the center of the mobile welding device according to FIG. 1 when connecting a sealing membrane to a base on a subsurface; and
Fig. 3 eine schematische Querschnittansicht durch die mobile Schweißvorrichtung nach den Figuren 1 und 2 mit Blick auf das vordere Ende der mo- bilen Schweißvorrichtung entlang der durch die Linie A-A in Fig. 2 ange deuteten Schnittebene. 3 shows a schematic cross-sectional view through the mobile welding device according to FIGS. 1 and 2 looking at the front end of the mobile welding device along the sectional plane indicated by the line AA in FIG.
In Figur 1 ist eine Ausgesta Itu ngsva ria nte einer erfindungsgemäßen mobilen Schweißvorrichtung 1 in einer dreidimensionalen isometrischen Ansicht dargestellt. Die mobile Schweißvorrichtung umfasst eine T ragrahmenanordnung 2. Die Ba- sistragrahmenanordnung der Tragrahmenanordnung 2 bilden zwei an gegenüberliegenden Längsseiten angeordnete parallel verlaufende längsseitige Tragrahmenelemente 3, 3‘. Die T ragrahmenelemente 3, 3‘ sind in einem hinteren, oberen Bereich der Tragrahmenanordnung 2 über zwei beabstandet hintereinander liegende Querstangen 4, 4‘ miteinander verbunden. Eine weitere Querstange 5 verbindet die beiden T ragrahmenelemente in einem unteren, vorderen Bereich miteinander. Die Zuordnung , Vorne' und .Hinten' bezieht sich dabei auf die vorgesehene Bewegungsrichtung der mobilen Schweißvorrichtung 1 beim Schweißen, kurz die Schweißrichtung, die in Figur 2 durch den Pfeil 27 angedeutet ist, wobei die Pfeil spitze nach vorne zeigt. Eine weitere Verbindung zwischen den beiden T ragrah- menelementen 3, 3' ergibt sich im hinteren Bereich über eine Drehachse 20 für die Andruckrolle 6. Die Andruckrolle 6 ist reibungsarm drehbar um die Drehachse 20 gelagert und dient der leichtgängigen Verfahrbarkeit respektive Fortbewegung der mobilen Schweißvorrichtung 1. Zudem dient die Andruckrolle 6 beim Verbinden einer Abdichtungsbahn 18 mit einer Unterlage 17 und/oder einem Untergrund 16 (siehe Figur 2) dazu, von der Oberseite her einen Druck auf eine erwärmte Abdichtungsbahn 18 auszuüben und diese auf der Unterlage 17 anzudrücken bzw. anzupressen. Wie der Längsschnittansicht in Figur 2 zu entnehmen ist, ist die Andruckrolle 6 dazu mit einem massiven Kern 21 und einer sich um die Zylindermantelfläche des massiven Kerns 21 außenseitig herum erstreckenden Bereifung 22 aus einem elastischeren Material ausgebildet. Die Andruckrolle 6 kann optional segmentiert ausgeführt sein. Hierbei kann die Andruckrolle 6 entlang einer Längsachse oder Drehachse 20 der Andruckrolle 6 benachbarte bzw. aufeinander folgende Abschnitte oder Segmente aufweisen. Insbesondere kann die Andruckrolle 6 Abschnitte bzw. Segmente aufweisen, welche mit Abschnitten bzw. Segmenten einer Heizpatrone 14 bzw. mit Abschnitten bzw. Segmenten eines Heizkeils 13 einer Heizkeileinrichtung 13, 14 bzw. mit Heizkeilen 13 einer Heizkeileinrichtung 13, 14 korrespondieren. Wie ebenfalls der Figur 2 entnommen werden kann, kann oberhalb der Andruckrolle 6, also auf den Querstangen 4, 4‘, optional ein Zusatzgewicht 19 angeordnet werden, wodurch der durch die Andruckrolle 6 auf eine Abdichtungs bahn 18 ausübbarer oder ausgeübter Anpressdruck noch weiter erhöht werden kann. FIG. 1 shows an embodiment of a mobile welding device 1 according to the invention in a three-dimensional isometric view. The mobile welding device comprises a support frame arrangement 2. The base support frame arrangement of the support frame arrangement 2 is formed by two parallel longitudinal support frame elements 3, 3' which are arranged on opposite longitudinal sides. The supporting frame elements 3, 3' are connected to one another in a rear, upper region of the supporting frame arrangement 2 via two transverse rods 4, 4' which are spaced one behind the other. Another crossbar 5 connects the two supporting frame elements to one another in a lower, front area. The association 'front' and 'back' refers to the intended direction of movement of the mobile welding device 1 during welding, in short the welding direction indicated by the arrow 27 in FIG. 2, the arrowhead pointing forward. A further connection between the two support frame elements 3, 3' results in the rear area via a rotary axis 20 for the pressure roller 6. The pressure roller 6 is mounted with low friction so that it can rotate about the rotary axis 20 and is used for smooth mobility or movement of the mobile welding device 1 In addition, the pressure roller 6 is used when connecting a sealing membrane 18 to a base 17 and/or a base 16 (see FIG. 2) to exert pressure on a heated sealing strip 18 from the top and to press or press it onto the base 17. As can be seen from the longitudinal sectional view in FIG. 2, the pressure roller 6 is designed with a solid core 21 and tires 22 made of a more elastic material and extending around the outside of the cylindrical surface of the solid core 21 . The pressure roller 6 can optionally be segmented. In this case, the pressure roller 6 can have sections or segments that are adjacent or follow one another along a longitudinal axis or axis of rotation 20 of the pressure roller 6 . In particular, the pressure roller 6 can have sections or segments which correspond to sections or segments of a heating cartridge 14 or to sections or segments of a hot wedge 13 of a hot wedge device 13, 14 or to hot wedges 13 of a hot wedge device 13, 14. As can also be seen in Figure 2, an additional weight 19 can optionally be arranged above the pressure roller 6, i.e. on the crossbars 4, 4', as a result of which the contact pressure that can be or is being exerted on a sealing sheet 18 by the pressure roller 6 can be increased even further can.
Zwischen den beiden T ragrahmenelementen 3, 3‘ erstreckt sich in einem vorderen Bereich eine Heizkeilheizeinrichtung 13, 14 umfassend eine Heizpatrone 14, die fünf identisch ausgebildete Heizkeile 13 trägt. Die Heizpatrone 14 erstreckt sich dabei entlang der Heizpatronenvorzugslängsachse 10 in Querrichtung zwischen den beiden längsseitigen Tragrahmenelementen 3, 3‘ der Basistragrahmenanord- nung. In Figur 1 wird die Heizpatrone 14 vollständig von den daran angeordneten Heizkeilen 13 verdeckt, in den weiteren Figuren 2 und 3 ist die Heizpatrone 14 nur stark vereinfacht dargestellt, da in den Schnittansichten in Figur 2 und insbesondere in Figur 3 auf eine Darstellung des Inneren der Heizpatrone 14 verzichtet wurde. Die Heizpatrone 14 ist länglich mit einem kreisrunden Querschnitt von 16 mm Außendurchmesser. An einem der beiden entlang der Heizpatronenvor- zugslängsachse 10 gegenüberliegenden Enden sind Anschlusskontakte 32 zur externen elektrischen Kontaktierung der Heizpatrone vorgesehen, wie Figur 3 ent- nommen werden kann. Die Anschlusskontakte 32 umfassen Kontakte zur Strom versorgung der Heizelemente im Inneren der Heizpatrone 14 und zur Kontaktierung einer ebenfalls im Inneren angeordneten Thermosonde zur Bestimmung der Tem peratur der Heizpatrone Zwecks Regelung der Heizpatrone 14. Auf eine Darstellung einer externen Stromversorgung für die Heizpatrone 14 ebenso wie auf Mittel zur Steuerung der Heizpatrone 14 wurde in den Figuren aus Gründen der Übersichtlichkeit verzichtet. An dem den Anschlusskontakten 27 gegenüberliegenden anderen Ende ist das metallische Hüllrohr der Heizpatrone 14 vollständig verschlossen. Between the two support frame elements 3, 3', a hot wedge heating device 13, 14 extends in a front region, comprising a heating cartridge 14 which carries five identically designed hot wedges 13. The heating cartridge 14 extends along the heating cartridge's preferred longitudinal axis 10 in the transverse direction between the two longitudinal support frame elements 3, 3' of the base support frame arrangement. In Figure 1, the heating cartridge 14 is completely covered by the heating wedges 13 arranged on it, in the other Figures 2 and 3 the heating cartridge 14 is only shown in a greatly simplified form, since the sectional views in Figure 2 and in particular in Figure 3 refer to a representation of the interior of the Heater cartridge 14 was dispensed with. The heating cartridge 14 is elongated with a circular cross-section of 16 mm outside diameter. Connection contacts 32 for external electrical contacting of the heating cartridge are provided on one of the two opposite ends along the preferred longitudinal axis 10 of the heating cartridge, as shown in FIG. can be taken. The connection contacts 32 include contacts for supplying power to the heating elements inside the heating cartridge 14 and for contacting a thermal probe, which is also arranged inside, for determining the temperature of the heating cartridge for the purpose of controlling the heating cartridge 14 Means for controlling the heating cartridge 14 have been omitted in the figures for reasons of clarity. At the other end opposite the connection contacts 27, the metal jacket tube of the heating cartridge 14 is completely closed.
Die fünf Heizkeile 13 sind allesamt identisch ausgebildet. Die Heizkeile 13 weisen jeweils ein axiales Spiel - bezogen auf die Heizpatronenvorzugslängsachse 10 - von etwas über 1 mm auf. Die Heizkeile 13 sind an der Heizpatrone 14 schwenkbar bzw. drehbar um die Heizpatronenvorzugslängsachse 10 gelagert. Die HeizpatroneThe five hot wedges 13 are all identical. The hot wedges 13 each have an axial play - based on the preferred longitudinal axis of the heating cartridge 10 - of slightly more than 1 mm. The heating wedges 13 are mounted on the heating cartridge 14 such that they can be pivoted or rotated about the preferred longitudinal axis 10 of the heating cartridge. The cartridge heater
14 zieht sich durch jeden Heizkeil 13 zentral im Bereich der größten Dicke eines jeden Heizkeils 13 hindurch, wobei, wie insbesondere Figur 2 entnommen werden kann, der Bereich der größten Dicke eines jeden Heizkeils 13 in Längsrichtung deutlich näher am stumpfen Ende 15 ist als am spitzen Ende 28 (Heizkeilspitze) des Heizkeils 13. Die Unterseite der Heizkeile 13 weist lediglich eine geringfügige Wölbung auf und ist damit auf die Kontaktierung einer im Wesentlichen ebenen Unterlage 17 und/odereines im Wesentlichen ebene Untergrunds 16 optimiert, wobei ein gewisses Maß an Unebenheit der Unterlage 17 und/oder des Untergrunds 16 durch die geringfügige Wölbung der Unterseite der Heizkeile 13 in Kombination mit der schwenkbaren bzw. drehbaren Lagerung der Heizkeile 13 an der Heizpatrone 14 berücksichtigt werden kann. Die Oberseite der Heizkeile 13 ist hingegen deutlich stärker gewölbt und zur optimalen Kontaktierung bei der Führung einer Abdichtungsbahn 18 über die Heizkeile 13 beginnend am jeweiligen stumpfen Ende14 runs through each hot wedge 13 centrally in the area of greatest thickness of each hot wedge 13, whereby, as can be seen in particular from Figure 2, the area of greatest thickness of each hot wedge 13 in the longitudinal direction is significantly closer to the blunt end 15 than to the pointed end End 28 (hot wedge tip) of the hot wedge 13. The underside of the hot wedge 13 has only a slight curvature and is therefore optimized for contacting a substantially flat base 17 and/or a substantially flat base 16, with a certain degree of unevenness of the base 17 and/or the substrate 16 can be taken into account by the slight curvature of the underside of the hot wedges 13 in combination with the pivotable or rotatable mounting of the hot wedges 13 on the heating cartridge 14. The upper side of the hot wedges 13, on the other hand, is significantly more curved and, for optimum contact when guiding a sealing strip 18 over the hot wedges 13, beginning at the respective blunt end
15 und endend in einer Umgebung der Heizkeilspitze 28 ausgebildet. Die Schwenk- barkeit bzw. Drehbarkeit der Heizkeile 13 um die Heizpatronenvorzugslängsachse 10 ist auf ± 10° beschränkt. Zur Beschränkung der Schwenkbarkeit bzw. Drehbarkeit der Heizkeile 13 wirkt die Querstange 5 der Basistragrahmenanordnung in ihrer Zweitverwendung als Winkelanschlag mit einer außenseitigen Ausnehmung 15 an der stumpfen Seite der Heizkeile 13 zusammen. Die Ausnehmung 15 erstreckt sich an dem stumpfen Ende eines jeden Heizkeils 13 über die gesamte Breite des Heizkeils 13. Durch die Ausnehmung 15 erstreckt sich dann die Querstange 5 mit etwas Abstand insbesondere zu der Oberkante 30 als auch der Unterkante 31 der Ausnehmung 15 hindurch. Wird ein Heizkeil 5 zu weit um die Heizpatronenvorzugslängsachse 10 geschwenkt bzw. gedreht, schlägt je nach Drehrichtung entweder die Oberkante 30 oberseitig (bei mathematisch positivem Drehsinn, wobei die Heizkeilspitze 28 angehoben wird) oder die Unterkante 31 unterseitig (bei mathematisch negativem Drehsinn, wobei Heizkeilspitze 28 abgesenkt wird) an der Querstange 5 an und eine weitere Schwenkung bzw. Drehung eines Heizkeils 5 in die entsprechende Drehrichtung wird unterbunden. 15 and ending in a vicinity of the hot wedge tip 28 is formed. The ability to pivot or rotate the heating wedges 13 about the preferred longitudinal axis 10 of the heating cartridge is limited to ±10°. In order to limit the pivotability or rotatability of the hot wedges 13, the crossbar 5 of the base support frame arrangement acts in its second use as an angle stop with a recess 15 on the outside the blunt side of the hot wedges 13 together. The recess 15 extends at the blunt end of each hot wedge 13 over the entire width of the hot wedge 13. The crossbar 5 then extends through the recess 15 at a certain distance, in particular from the upper edge 30 and the lower edge 31 of the recess 15. If a hot wedge 5 is pivoted or turned too far about the preferred longitudinal axis 10 of the heating cartridge, depending on the direction of rotation, either the upper edge 30 hits the top side (in the case of a mathematically positive direction of rotation, with the hot-wedge tip 28 being raised) or the lower edge 31 on the underside (in the case of mathematically negative direction of rotation, with the hot-wedge tip 28 is lowered) on the crossbar 5 and further pivoting or rotation of a hot wedge 5 in the corresponding direction of rotation is prevented.
Die T ragrahmenanordnung 2 des in den Figuren dargestellten Ausführungsbeispiels einer erfindungsgemäßen mobilen Schweißvorrichtung 1 weist neben der Basistragrahmenanordnung die beiden längsseitigen T ragrahmenelemente 3, 3‘ betreffend zudem noch eine Vorlauftragrahmenanordnung umfassend zwei Vorlauftragrahmenelemente 7, 7 auf. Die beiden Vorlauftragrahmenelemente 7, T sind längsseitig gegenüberliegend parallel verlaufend angeordnet und an dem hinteren Ende drehbar um die Heizpatronenvorzugslängsachse 10 mit der Basistragrahmenanordnung verbunden. Der Abstand der beiden Vorlauftragrahmenelemente 7, 7‘ in Querrichtung ist ein Stück größer als der der beiden längsseitigen Tragrah menelemente 3, 3‘, die beiden Vorlauftragrahmenelemente 7, T liegen also ein Stück weiter außen als das nächstliegende längsseitige T ragrahmenelement 3, 3‘. Am vorderen Ende sind die beiden Vorlauftragrahmenelemente 7, 7 über eine Querstange 8 miteinander verbunden. Zudem erstreckt sich zwischen den beiden Vorlauftragrahmenelementen 7, 7 eine beidseitig an den Vorlauftragrahmenelemente 7, 7 fixierte Vorlaufrollenachse 29 (Figur 2), an der eine Vorlaufrolle 9 drehbar gelagert ist. Ein mit der Vorlauftragrahmenanordnung gekoppelter Rechteckbügel 11 , umfassend einen Handgriff 12, erleichtert das Schwenken bzw. Drehen der Vorlauftragrahmenanordnung um die Heizpatronenvorzugslängsachse 10 für einen Bediener der mobilen Schweißvorrichtung 1. Die Schwenkbarkeit bzw. Drehbarkeit der Vorlauftragrahmenanordnung wird in Figur 2 durch eine zweite mögliche, ge strichelt dargestellte Stellung von Vorlauftragrahmenanordnung und Hand- griffl 2/Rechteckbügel 11 angedeutet. Der Handgriff 12/Rechteckbügel 11 erleich tert für einen Bediener zudem auch das Verfahren der mobilen Schweißvorrichtung 1 durch Ziehen der mobilen Schweißvorrichtung 1 über Handgriff 12/Rechteckbügel 11. Bei der in den Figuren dargestellten mobilen Schweißvorrichtung 1 ist vorgesehen, dass diese von einem Bediener händisch verfahren wird. Die mobile Schweißvorrichtung 1 könnte allerdings auch mittels eines oder mehreren (Elektro-)Motoren angetrieben und dann etwa ferngesteuert verfahrbar sein bzw. verfahren werden, wobei sowohl die Andruckrolle 6 als auch die Vorlaufrolle 9 dabei eine angetriebene Rolle sein können. Zudem kann eine mobile Schweißvorrichtung 1 auch mit Sensoren und Steuergeräten oder dergleichen versehen sein, die der mobilen Schweißvorrichtung 1 ein automatisches/selbsttätiges Verfahren ermöglichen. Nach dem Einlegen eines Endes einer Abdichtungsbahn 18 in die mobile Schweiß vorrichtung 1 durch einen Bediener könnte die mobile Schweißvorrichtung 1 dann die Abdichtungsbahn 18 ohne weiteres Zutun eines Bedieners mit einer Unterlage 17 und/oder einem Untergrund 16 vollständig verbinden. The support frame arrangement 2 of the exemplary embodiment of a mobile welding device 1 according to the invention shown in the figures has, in addition to the basic support frame arrangement, the two longitudinal support frame elements 3, 3' relating to a pre-application frame arrangement comprising two pre-application frame elements 7, 7. The two forward application frame elements 7, T are arranged opposite one another on the long side, running parallel and are connected at the rear end to the base support frame arrangement such that they can be rotated about the preferred longitudinal axis 10 of the heating cartridge. The distance between the two pre-application frame elements 7, 7' in the transverse direction is slightly greater than that of the two longitudinal-side support frame elements 3, 3', so the two pre-application frame elements 7, T are a little further to the outside than the next longitudinal-side support frame element 3, 3'. At the front end, the two forward application frame elements 7, 7 are connected to one another via a crossbar 8. In addition, between the two pre-application frame elements 7, 7 there extends a pre-roller axle 29 (FIG. 2) which is fixed on both sides to the pre-application frame elements 7, 7 and on which a pre-roller 9 is rotatably mounted. A rectangular bracket 11 coupled to the pre-application frame arrangement, comprising a handle 12, makes it easier for an operator of the mobile welding device 1 to pivot or rotate the pre-application frame arrangement about the heating cartridge's preferred longitudinal axis 10. The pivotability or rotatability the pre-application frame arrangement is indicated in FIG. The handle 12/rectangular bracket 11 also makes it easier for an operator to move the mobile welding device 1 by pulling the mobile welding device 1 over the handle 12/rectangular bracket 11. The mobile welding device 1 shown in the figures can be operated manually by an operator will proceed. However, the mobile welding device 1 could also be driven by one or more (electric) motors and then be moved or moved by remote control, with both the pressure roller 6 and the forward roller 9 being able to be a driven roller. In addition, a mobile welding device 1 can also be provided with sensors and control devices or the like, which enable the mobile welding device 1 to move automatically/automatically. After an operator has inserted one end of a sealing sheet 18 into the mobile welding device 1, the mobile welding device 1 could then completely connect the sealing sheet 18 to a substrate 17 and/or a substrate 16 without any further action by an operator.
In Figur 2 ist die mobile Schweißvorrichtung 1 nach Figur 1 in einer Längsschnittan sicht beim Verbinden einer Abdichtungsbahn 18 mit einer Unterlage 17 dargestellt. Die Unterlage 17 ist eine weitere Abdichtungsbahn bzw. Anordnung von Abdich tungsbahnen, die bereits mit einem Untergrund 16 verbunden ist bzw. sind. Bei dem Untergrund 16 kann es sich etwa um eine gegen Wasser abzudichtende Be tondecken ko nstru ktion handeln. Bei dem in den Figuren dargestellten erfindungsgemäßen Ausführungsbeispiel einer mobilen Schweißvorrichtung 1 ist vorgesehen, eine mit einer Unterlage 17 und/odereinem Untergrund 16 zu verbindende Abdichtungsbahn 18 zunächst auf der Unterlage 17 und/oder dem Untergrund 16 vollständig auszurollen und auszurichten. An einem Ende der Abdichtungsbahn 18 wird diese dann in die mobile Schweißvorrichtu ng 1 derart eingelegt, dass ein endseitiger Bereich der Abdichtungsbahn 18 mit seiner Unterseite auf den Oberseiten der Schweißkeile 13 aufliegt. Das Einlegen der Abdichtungsbahn 18 in die mobile Schwei ßvorrichtu ng 1 wird durch die Schwenkbarkeit bzw. Drehbarkeit der Vorlauftragrahmenanordnung erleichtert. Die in Figur 2 gestrichelt angedeutete optionale Stellung von Vorlauftragrahmenanordnung und Handgriff 12/Rechteckbügel 11 entspricht einer Stellung der Vorlauftragrahmenanordnung zum Einlegen einer Abdichtungsbahn 18 in die mobile Schweißvorrichtung 1. Ein Ende der Abdichtungsbahn 18 kann dann einfacher unter der Vorlaufrolle 9 hindurchgeführt und mit der Unterseite auf die Oberseiten der Heizkeile 13 gelegt werden. Auf die Vorlaufrolle 9 und auf die ganze Vorlauftragrahmenanordnung kann gegebenenfalls verzichtet werden. Allerdings verbessert die Vorlaufrolle 9 den Kontakt zwischen einer Abdichtungsbahn 18 und den Heizkeilen 13 insbesondere im vorderseitigen Bereich bzw. am stumpfen Ende 15 der Heizkeile 13 und damit die Übertragung von Wärmeenergie von den Heizkeilen 13 auf eine Abdichtungsbahn 18. Auch der geringe Ab stand zwischen dem spitzen Ende (Heizkeilspitze) 28 der Heizkeile 13 und der An druckrolle 6 sorgt für einen guten Kontakt zwischen einer Abdichtungsbahn 18 und den Oberseiten der Heizkeile 13. Zur Ausbildung einer Verbindung der Abdichtungsbahn 18 mit der Unterlage 17 wird die mobile Schweißvorrichtung 1 an einem Ende der Abdichtungsbahn 18 beginnend kontinuierlich in Schweißrichtung 27 entlang der Abdichtungsbahn 18 verfahren und dabei sukzessive über die Oberseite der Heizkeile 5 geführte Abschnitte der Abdichtungsbahn 18 über ihre gesamte Breite erwärmt und nahezu unmittelbar anschließend von der Andruckrolle 6 auf der Unterlage 17 angedrückt, bis das andere Ende der Abdichtungsbahn 18 erreicht ist und die gesamte Abdichtungsbahn vollflächig mit der Unterlage 17 verbunden ist. Dabei werden zu den erwärmten Abschnitten der Abdichtungsbahn 18 jeweils korrespondierende Abschnitte der Unterlage 17 durch entsprechenden Kontakt zwischen den Unterseiten der Heizkeile 13 und der Unterlage 17 ebenfalls erwärmt. In FIG. 2, the mobile welding device 1 according to FIG. The base 17 is another sealing strip or arrangement of sealing strips that is already connected to a substrate 16 or are. The substrate 16 can be a concrete ceiling construction to be sealed against water. In the exemplary embodiment of a mobile welding device 1 according to the invention shown in the figures, a sealing strip 18 to be connected to a base 17 and/or a base 16 is first completely rolled out and aligned on the base 17 and/or the base 16 . At one end of the sealing membrane 18 this is then placed in the mobile welding device 1 such that an end area of the sealing membrane 18 rests with its underside on the upper sides of the welding wedges 13 . The insertion of the waterproofing membrane 18 in the mobile Welding device 1 is facilitated by the ability to pivot or rotate the pre-application frame arrangement. The optional position of the pre-application frame arrangement and handle 12/rectangular bracket 11 indicated by dashed lines in Figure 2 corresponds to a position of the pre-application frame arrangement for inserting a sealing sheet 18 into the mobile welding device 1. One end of the sealing sheet 18 can then be guided more easily under the leading roller 9 and with the underside up the tops of the hot wedges 13 are placed. The feed roller 9 and the entire feed application frame arrangement can optionally be dispensed with. However, the leading roller 9 improves the contact between a sealing sheet 18 and the heating wedges 13, particularly in the front area or at the blunt end 15 of the heating wedges 13 and thus the transfer of thermal energy from the heating wedges 13 to a sealing sheet 18. The small distance between the The pointed end (hot wedge tip) 28 of the hot wedges 13 and the pressure roller 6 ensures good contact between a sealing sheet 18 and the tops of the hot wedges 13 Starting with the sealing sheet 18, move it continuously in the welding direction 27 along the sealing sheet 18 and successively heat sections of the sealing sheet 18 that are guided over the top of the hot wedges 5 over their entire width and then almost immediately press them onto the base 17 by the pressure roller 6 until the other end of the waterproofing membrane 18 is reached and the entire sealing membrane is connected to the base 17 over its entire surface. Sections of the base 17 corresponding to the heated sections of the sealing strip 18 are also heated by appropriate contact between the undersides of the hot wedges 13 and the base 17 .
In Figur 3 ist eine Querschnittansicht durch die mobile Schweißvorrichtung 1 dargestellt, wobei die entsprechende Schnittebene in Figur 2 durch die Linie A-A angedeutet ist. Die Darstellung in Figur 3 konzentriert sich auf die Heizkeilheizvorrichtung 13, 14 und deren Anordnung an und Verbindung mit der Tragrahmenanord nung 2 der mobilen Schweißvorrichtung 1, daher wird in Figur 3 auf die Darstellung einiger dafür nicht relevanter Teile wie etwa der Vorlaufrolle 9 verzichtet. Die Heizpatrone 14 der Heizkeilheizvorrichtung 13, 14 ist im Bereich ihrer beiden entlang der Heizpatronenvorzugslängsachse 10 gegenüberliegenden Enden jeweils in einer (einseitigen) Flanschhülse 23, 23‘ gelagert. Die Flanschhülsen 23, 23‘ selbst sind wiederum in einer Durchführung in dem jeweiligen zugeordneten längsseitigen T ragrahmenelement 3, 3‘ angeordnet, wobei der jeweilige Flansch 33, 33‘ der Flanschhülse 23, 23‘ innenseitig an das zugeordnete T ragrahmenelement 3, 3‘ stößt. Dadurch ist jede Flanschhülse 23, 23‘ gegen ein Herausbewegen aus ihrer Position in der Durchführung in dem jeweiligen zugeordneten T ragrahmenelement 3, 3‘ in einander entgegengesetzte Richtungen parallel zu der Heizpatronenvorzugslängsachse 10 gesichert. Die Sicherung der Flanschhülsen 23, 23‘ gegen ein Herausbewegen aus ihrer Position in der Durchführung in dem jeweiligen zugeordneten T ragrahmenelement 3, 3‘ in Richtungen parallel zu der Heizpatronenvorzugslängsachse 10 aufeinander zu erfolgt durch jeweils einen außenseitig um eine jede Flanschhülse 23, 23‘ umlaufenden Sicherungsring 25, 25‘, der auf der dem jeweiligen Flansch einer Flanschhülse 23, 23‘ gegenüberliegenden Außenseite des Rechteckbügels 11 gegen die jeweilige Längsseite des Rechteckbügels 11 stößt. Zwischen einem der längsseitigen T ragrahmenelemente 3, 3‘ der Basistragrah menanordnung und einer der jeweiligen Längsseiten des Rechteckbügels 11 sitzt noch ein jeweiliges Vorlauftragrahmenelement 7, 7‘ der Vorlauftragrahmenanordnung auf den Flanschhülsen 23, 23‘, wobei, wie schon erwähnt, die Vorlauftragrahmenanordnung um die Heizpatronenvorzugslängsachse 10 schwenkbar bzw. dreh bar gelagert ist und zur Erleichterung der Schwenkung bzw. Drehung der Vorlauftragrahmenanordnung seitens eines Bedieners diese mit dem Rechteckbügel 11 gekoppelt ist. Die Sicherungsringe 25, 25‘ sind an der zugehörigen Flanschhülse 23, 23' jeweils mittels eines in eine radiale Bohrung eingesetzten Gewindestifts 26, 26' fixiert. Durch den Flansch der Flanschhülsen 23, 23' erstreckt sich jeweils in radialer Richtung ebenfalls eine Bohrung für einen Gewindestift 24, 24' zur gegenseitigen Fixierung der Heizpatrone 14 und der Flanschhülsen 23, 23' aneinander. Bezugszeichenliste FIG. 3 shows a cross-sectional view through the mobile welding device 1, the corresponding sectional plane being indicated in FIG. 2 by the line AA. The illustration in FIG. 3 concentrates on the hot wedge heating device 13, 14 and its arrangement on and connection to the supporting frame arrangement 2 of the mobile welding device 1, so the illustration in FIG some parts that are not relevant for this, such as the leading roller 9, are dispensed with. The heating cartridge 14 of the hot wedge heating device 13, 14 is mounted in the region of its two opposite ends along the preferred longitudinal axis 10 of the heating cartridge in a (one-sided) flange sleeve 23, 23'. The flange sleeves 23, 23' themselves are in turn arranged in a passage in the respective associated longitudinal support frame element 3, 3', with the respective flange 33, 33' of the flange sleeve 23, 23' abutting the associated support frame element 3, 3' on the inside . As a result, each flange sleeve 23, 23' is secured against moving out of its position in the passage in the respective associated support frame element 3, 3' in opposite directions parallel to the preferred longitudinal axis 10 of the heating cartridge. The flange sleeves 23, 23' are secured against moving out of their position in the duct in the respective associated support frame element 3, 3' in directions parallel to the preferred longitudinal axis 10 of the heating cartridge by means of a peripheral ring around each flange sleeve 23, 23' on the outside Securing ring 25, 25', which abuts against the respective longitudinal side of the rectangular bracket 11 on the outside of the rectangular bracket 11 opposite the respective flange of a flange sleeve 23, 23'. Between one of the long-side support frame elements 3, 3' of the base support frame arrangement and one of the respective long sides of the rectangular bracket 11 there is also a respective pre-application frame element 7, 7' of the pre-application frame arrangement on the flange sleeves 23, 23', whereby, as already mentioned, the pre-application frame arrangement around the Heating cartridge preferred longitudinal axis 10 is mounted pivotably or rotatably bar and to facilitate the pivoting or rotation of the pre-application frame assembly on the part of an operator, this is coupled to the rectangular bracket 11. The retaining rings 25, 25' are each fixed to the associated flange sleeve 23, 23' by means of a threaded pin 26, 26' inserted into a radial bore. A bore for a threaded pin 24, 24' extends through the flange of the flanged sleeves 23, 23' in the radial direction in order to fix the heating cartridge 14 and the flanged sleeves 23, 23' to one another. reference list
1 Mobile Schweißvorrichtung 1 mobile welding device
2 Tragrahmenanordnung 2 support frame assembly
3, 3‘ Längsseitige Tragrahmenelemente 4, 4‘ Querstange 3, 3' Longitudinal support frame members 4, 4' Crossbar
5 Querstange 5 crossbar
6 Andruckrolle 6 pinch roller
7, T Vorlauftragrahmenelemente 7, T pre-application frame elements
8 Querstange 9 Vorlaufrolle 8 Crossbar 9 Idler
10 Heizpatronenvorzugslängsachse 10 Preferred longitudinal axis of the heating cartridge
11 Rechteckbügel 11 square brackets
12 Handgriff 12 handle
13 Heizkeil 14 Heizpatrone 13 Hot wedge 14 Heater cartridge
15 Aussparung 15 recess
16 Untergrund 16 underground
17 Unterlage (untere Abdichtbahn, bereits mit Untergrund verbunden)17 Underlay (lower sealing membrane, already connected to the subsurface)
18 (obere) Abdichtbahn 19 Gewicht (optional) 18 (upper) sealing strip 19 weight (optional)
20 Drehachse Andruckrolle 21 Kern Andruckrolle 22 Bereifung Andruckrolle 20 Axis of rotation pressure roller 21 core pressure roller 22 tires pressure roller
23, 23' Flanschhülse 24, 24‘ Gewindestift 23, 23' Flange sleeve 24, 24' Threaded pin
25, 25‘ Sicherungsring 25, 25' locking ring
26, 26' Gewindestift 26, 26' grub screw
27 Schweißrichtung 27 welding direction
28 Heizkeilspitze 29 Drehachse Vorlaufrolle 28 hot wedge tip 29 Axis of rotation of the pre-roller
30 Oberkante Ausnehmung (oberer Anschlag Drehbegrenzung Heizkeil)30 Upper edge of recess (upper stop rotation limiter hot wedge)
31 Unterkante Ausnehmung (unterer Anschlag Drehbegrenzung Heizkeil)31 Bottom edge of recess (bottom stop rotation limiter hot wedge)
32 Anschlusskontakte 33, 33‘ Flansch Flanschhülse 32 connection contacts 33, 33' flange flange sleeve

Claims

Patentansprüche patent claims
1 , Mobile Schweißvorrichtung (1) zur flächigen Verbindung einer Abdichtungsbahn (18) mit einer Unterlage (17) und/odereinem Untergrund (16), umfassend zumindest eine auf der Unterlage (17) und/oder dem Untergrund (16) verfahrbare Tragrahmenanordnung (2) und eine sich zwischen zwei gegenüberliegenden Längsseiten (3, 3‘) der T ragrahmenanordnung (2) in einer Querrichtung erstreckende elektrische Heizkeilheizeinrichtung (13, 14), dadurch gekennzeichnet, dass die elektrische Heizkeilheizeinrichtung (13, 14) mindestens eine elektrisch bestrombare Heizpatrone (13) mit einer Heiz- patronenvorzugslängsachse (10) parallel zu der Querrichtung und wenigstens zwei Heizkeile (13) mit einem stumpfen Ende (15) und einem spitzen Ende (28) aufweist, wobei die Heizkeile (13) beabstandet entlang der Heizpatronenvorzugslängsachse (10) an der Heizpatrone (14) angeordnet sind. Mobile welding device (1) for the surface connection of a sealing sheet (18) to a base (17) and/or a base (16), comprising at least one support frame arrangement (2 ) and an electrical hot wedge heating device (13, 14) extending in a transverse direction between two opposite longitudinal sides (3, 3') of the support frame arrangement (2), characterized in that the electrical hot wedge heating device (13, 14) has at least one electrically energizable heating cartridge ( 13) with a preferred longitudinal axis (10) of the heating cartridge parallel to the transverse direction and at least two heating wedges (13) with a blunt end (15) and a pointed end (28), the heating wedges (13) being spaced apart along the preferred longitudinal axis (10) of the heating cartridge are arranged on the heating cartridge (14).
2. Schweißvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass zu- mindest ein Heizkeil (13) an der Heizpatrone (14) der Heizkeilheizeinrichtung (13, 14) wenigstens ein Stück weit um die Heizpatronenvorzugslängsachse (10) schwenkbar und/oder drehbar gelagert ist. 2. Welding device according to claim 1, characterized in that at least one heating wedge (13) on the heating cartridge (14) of the heating wedge heating device (13, 14) is pivotably and/or rotatably mounted at least part way around the preferred longitudinal axis (10) of the heating cartridge.
3. Schweißvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zumindest zwei Heizkeile (13) unabhängig voneinander um die Heizpatronenvorzugslängsachse (10) schwenkbar bzw. drehbar gelagert sind. 3. Welding device according to claim 2, characterized in that at least two heating wedges (13) are mounted pivotably or rotatably about the preferred longitudinal axis of the heating cartridge (10) independently of one another.
4. Schweißvorrichtu ng nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass die Schwenkbarkeit und/oder Drehbarkeit wenigstens eines Heizkeiis (13) um die Heizpatronenvorzugslängsachse (10) mittels zumindest eines im Bereich des stumpfen Endes (15) am Heizkeil (13) ausgebil- deten Anschlags (30, 31) und einem korrespondierenden Gegenanschlag4. Welding device according to one of claims 2 or 3, characterized in that the ability to pivot and/or rotate at least one heating wedge (13) around the preferred longitudinal axis (10) of the heating cartridge by means of at least one in the area of the blunt end (15) on the heating wedge (13) trained stop (30, 31) and a corresponding counter-stop
(5) begrenzt ist oder begrenzbar ist. (5) is limited or is capable of being limited.
5. Schweißvorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass zumindest ein Heizkeil (13) federnd an der Heizpatrone (14) gelagert ist. 5. Welding device according to one of claims 2 to 4, characterized in that at least one heating wedge (13) is resiliently mounted on the heating cartridge (14).
6. Schweißvorrichtu ng nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Heizkeilheizvorrichtung (13, 14) im Bereich der beiden gegenüberliegenden längsseitigen Enden der Heizpatrone (14) entlang der Heizpatronenvorzugslängsachse (10) an einer jeweiligen der gegenüberliegenden Längsseiten (3, 3‘) der T ragrahmenanordnung (2) gelagert und fi- xiert ist. 6. Welding device according to one of claims 1 to 5, characterized in that the hot wedge heating device (13, 14) in the region of the two opposite longitudinal ends of the heating cartridge (14) along the preferred longitudinal axis (10) of the heating cartridge on one of the respective opposite longitudinal sides (3, 3') of the support frame arrangement (2) is mounted and fixed.
7. Schwei ßvorrichtu ng nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Heizkeile (13) in einer Umgebung ihrer größten Dicke an der Heizpatrone (14) gelagert sind und die Heizpatronenvorzugslängsachse (10) zentral in Querrichtung durch die Heizkeile (13) verläuft. 7. Welding device according to one of Claims 1 to 6, characterized in that the heating wedges (13) are mounted on the heating cartridge (14) in the vicinity of their greatest thickness and the preferred longitudinal axis of the heating cartridge (10) extends centrally in the transverse direction through the heating wedges (13 ) runs.
8. Schweißvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Heizkeile (13) ein asymmetrisches Längsschnittprofil mit einer nur geringfügig gewölbten äußeren unterseitigen Längsschnittkontur und einer stärker gewölbten äußeren oberseitigen Längsschnittkontur auf weisen. 8. Welding device according to one of claims 1 to 7, characterized in that the hot wedges (13) have an asymmetrical longitudinal sectional profile with an only slightly curved outer longitudinal sectional contour on the lower side and a more curved outer longitudinal sectional contour on the upper side.
PCT/EP2022/070233 2021-07-29 2022-07-19 Hot wedge welding device for the surface-to-surface connection of sealing sheets to a base and/or to a substrate WO2023006518A1 (en)

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DE202021104068.8 2021-07-29
DE202021104068.8U DE202021104068U1 (en) 2021-07-29 2021-07-29 Hot wedge welding device for the surface connection of sealing membranes with a base and / or a sub-floor

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Publication number Priority date Publication date Assignee Title
CN117584471A (en) * 2023-04-11 2024-02-23 山东建通土工材料有限公司 Geomembrane surface treatment welding device and technology

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE9317104U1 (en) * 1993-11-09 1994-02-10 Kaminski Renald Device for welding film edges
US20140227044A1 (en) * 2013-02-11 2014-08-14 Gse Environmental, Llc Leak Detectable Geomembrane Liners and Method and Apparatus for Forming
EP4008527A1 (en) * 2020-12-07 2022-06-08 Herz Austria Gesellschaft m.b.H Welding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317104U1 (en) * 1993-11-09 1994-02-10 Kaminski Renald Device for welding film edges
US20140227044A1 (en) * 2013-02-11 2014-08-14 Gse Environmental, Llc Leak Detectable Geomembrane Liners and Method and Apparatus for Forming
EP4008527A1 (en) * 2020-12-07 2022-06-08 Herz Austria Gesellschaft m.b.H Welding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117584471A (en) * 2023-04-11 2024-02-23 山东建通土工材料有限公司 Geomembrane surface treatment welding device and technology

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DE112022003782A5 (en) 2024-05-29

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