Plastic-capillary tube mat manufacturing method, involves heating welding zone and transition region so as to increase external diameter at transition region, and forming preset external contour at transition region during pressing

• Main Authors: SOBCZYK, REINHARD, BAUKE, ALBRECHT, KREMER, JOSEF
• Format: Patent
• Language: English; German
• Published: 26.06.2008
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; DOMESTIC HOT-WATER SUPPLY SYSTEMS; DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS; ELEMENTS OR COMPONENTS THEREFOR; HEAT EXCHANGE IN GENERAL; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LIGHTING; MAKING GRANULES OR PREFORMS; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RANGES; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; VENTILATING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The method involves welding a welding zone (19) radially at a manifold (2), where the welding zone is formed at an axial end of a capillary tube (3). The welding zone and a transition region (7) of the capillary tube are heated so as to increase external diameter (D4) at the transition region and to press the welding zone at the manifold, where the transition region is adjacent to the welding zone. A predetermined external contour is formed at the transition region during pressing. Independent claims are also included for the following: (1) a device for manufacturing a plastic-capillary tube mat (2) a plastic-capillary tube mat. Die Erfindung betrifft ein Verfahren zum Herstellen einer Kunststoff-Kapillarrohrmatte (1), bei dem eine am axialen Ende eines Kapillarrohres (3) ausgebildete Schweißzone (19) radial an ein Sammelrohr (2) geschweißt wird, wobei zunächst die Schweißzone (19) sowie ein an die Schweißzone (19) angrenzender Übergangsbereich (7) des Kapillarrohres (3) erwärmt, dabei der Außendurchmesser (D4) im Übergangsbereich (7) vergrößert und anschließend die Schweißzone (19) an das Sammelrohr (2) gedrückt wird. Um mechanische Belastbarkeit von Kapillarrohrmatten zu verbessern, ist erfindungsgemäß vorgesehen, dass beim Aneinanderdrücken eine vorbestimmte Außenkontur in den Übergangsbereich (7) eingeformt wird.