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1. (WO1985004604) INJECTION MOULDING CORE FOR PIPE BENDS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1985/004604 International Application No.: PCT/DE1985/000115
Publication Date: 24.10.1985 International Filing Date: 10.04.1985
IPC:
B22C 9/10 (2006.01) ,B29C 33/48 (2006.01) ,B29C 45/26 (2006.01) ,B29C 45/44 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
C
FOUNDRY MOULDING
9
Moulds or cores; Moulding processes
10
Cores; Manufacture or installation of cores
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33
Moulds or cores; Details thereof or accessories therefor
44
with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
48
with means for collapsing or disassembling
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
26
Moulds
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
40
Removing or ejecting moulded articles
44
for undercut articles
Applicants:
AGRU ALOIS GRUBER & SOHN OHG [AT/AT]; Grünburger Strasse 41 A-4540 Bad Hall, AT (AllExceptUS)
BARAINSKY, Rudolf [DE/DE]; DE (UsOnly)
Inventors:
BARAINSKY, Rudolf; DE
Agent:
RUPPRECHT, Klaus; Römerhof 35 D-6000 Frankfurt am Main 90, DE
Priority Data:
P 34 14 231.214.04.1984DE
Title (EN) INJECTION MOULDING CORE FOR PIPE BENDS
(FR) NOYAU DE MOULAGE PAR INJECTION POUR COUDES DE TUYAUX
Abstract:
(EN) Injection moulding core for pipe bends, with at list one straight pipe terminal portion, wherein the bend core is divided in various segments (a) which are preferably wedge-shaped when viewed sideways and which are connected by appropriate elements preferaby mushroom-shaped projections (c) to form a chain so that the medial line (b) of the chain of sectors may form a straight line, and which are mutually fixed by appropriate elements, preferably centering pin (d) or adjusting springs and/or an edge overlapping the various sectors (a), in order to avoid any displacement and torsion, and which comprise one or a plurality of holes (e) through which pass one or a plurality of traction elements, preferably metal cables (f) which are connected to the last sector (a) of the chain, whereas they are connected to displacement elements (i) at the other end of the chain by means of a core (h) fixed preferably to that end of the chain and provided for the straight pipe terminal portion.
(FR) Noyau de moulage par injection pour coudes de tuyaux, avec au moins une partie terminale de tuyau droite, où le noyau de coude est divisé en divers segments (a) de préférence en forme de coins en vue latérale, qui sont reliés par des éléments appropriés, de préférence des saillies en forme de champignons (c), pour former une chaîne de telle manière que la ligne médiane (b) de la chaîne de segments peut former une droite, qui sont fixés réciproquement par des éléments appropriés, de préférence des chevilles de centrage (d) ou des ressorts d'ajustage et/ou un bord chevauchant des divers segments (a), pour éviter tout déplacement et toute torsion et qui comportent un ou plusieurs trous (e) par lesquels traversent un ou plusieurs éléments de traction, de préférence des câbles métalliques (f), qui sont reliés au dernier segment (a) de la chaîne, alors qu'ils sont raccordés à des éléments de déplacement (i) à l'autre extrémité de la chaîne grâce à un noyau (h) fixé de préférence à cette extrémité de la chaîne et conçu pour la partie terminale de tuyau droite.
Designated States: US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0211832US4721280