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1. WO2013014952 - UNDERCUT PROCESSING MECHANISM

Publication Number WO/2013/014952
Publication Date 31.01.2013
International Application No. PCT/JP2012/050359
International Filing Date 11.01.2012
Chapter 2 Demand Filed 27.02.2013
IPC
B29C 33/44 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
44with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
B22D 17/22 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
20Accessories; Details
22Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
CPC
B22D 17/2236
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
20Accessories: Details
22Dies
2236Equipment for loosening or ejecting castings from dies
B22D 17/24
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
20Accessories: Details
22Dies
24Accessories for locating and holding cores or inserts
B29C 33/44
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
44with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
B29C 33/485
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
44with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
48with means for collapsing or disassembling
485cores or mandrels
B29C 45/4435
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
40Removing or ejecting moulded articles
44for undercut articles
4435using inclined, tiltable or flexible undercut forming elements driven by the ejector means
B29C 45/4471
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
40Removing or ejecting moulded articles
44for undercut articles
4471using flexible or pivotable undercut forming elements
Applicants
  • 株式会社テクノクラーツ TECHNOCRATS CORPORATION [JP]/[JP] (AllExceptUS)
  • 反本 正典 SORIMOTO, Masanori [JP]/[JP] (UsOnly)
Inventors
  • 反本 正典 SORIMOTO, Masanori
Agents
  • 鈴木 秀昭 SUZUKI, Hideaki
Priority Data
2011-16093722.07.2011JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) UNDERCUT PROCESSING MECHANISM
(FR) MÉCANISME POUR LA GESTION DES CONTRE-DÉPOUILLES
(JA) アンダーカット処理機構
Abstract
(EN)
The invention is an undercut processing mechanism that is able to perform de-molding easily even when the undercut portion (P1) of a molding (P) has a shape that is irregular on both sides of the direction orthogonal to the direction of de-molding by implementing a larger movement stroke within a limited set-up space. Inside a holder (30) that is disposed inside a movable mold (13), a pair of molding cores (51, 52) that mold the undercut portion (P1) are connected to and supported by a holding piece (40) that moves in the de-molding direction. During de-molding, the respective molding cores (51, 52) are guided by guiding means (33, 34) from a molding position in which the cores contact each other towards a mold release position in which the cores are separated, and each moves in front or in back so as to move past each other in opposite directions from one end of the holding piece (40) to the other end.
(FR)
L'invention concerne un mécanisme pour la gestion des contre-dépouilles, qui est apte à exécuter un démoulage facilement même si la partie à contre-dépouille (P1) d'un moulage (P) présente une forme qui est irrégulière sur les deux côtés de la direction orthogonale à la direction de démoulage, en mettant en œuvre une plus grande course de mouvement dans un espace réglé limité. A l'intérieur d'une monture (30) qui est disposée à l'intérieur d'un moule mobile (13), deux noyaux de moulage (51, 52) qui moulent la partie à contre-dépouille (B1) sont reliés à une pièce de retenue (40) et supportés par cette pièce, se déplacent dans la direction de démoulage. Pendant le démoulage, les noyaux de moulage respectifs (51, 52) sont guidés par des moyens de guidage (33, 34) d'une position de moulage dans laquelle les noyaux sont en contact entre eux vers une position d'ouverture du moule dans laquelle les noyaux sont espacés et chacun se déplace vers l'avant ou vers l'arrière de manière à se dépasser l'un par rapport à l'autre dans des directions opposées, d'une première extrémité de la pièce de retenue (40) à l'autre extrémité.
(JA)
 成形品(P)のアンダーカット部(P1)が型抜き方向と交差する両側に凹凸する形状であっても、限られた設置スペース内でより大きな移動ストロークを実現して容易に型抜きすることができるアンダーカット処理機構である。可動型(13)に内設されたホルダー(30)内で、アンダーカット部(P1)を成形する一対の成形コア(51,52)は型抜き方向に移動する保持駒(40)に連結支持され、型抜き時に各成形コア(51,52)は、互いに対接する成形位置から離隔する離型位置に向ってガイド手段(33,34)に案内され、それぞれ保持駒(40)の一端側から他端側へと互いに逆向きに前後ですれ違うように移動する。
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