MOLDING DIE AND METHOD OF PRODUCING INSERT MOLDED BODY

• Main Authors: HISAMATSU KATSUNORI, HASHIMOTO KEIICHI
• Format: Patent
• Language: English; Japanese
• Published: 24.09.2021
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To suppress occurrence of burrs around a protruding part and heighten position accuracy of the protruding part, when intra-die molding an insert molded body including the substantially U-shaped protruding part in which part of a rigid member buried in a foam particle molded body protrudes from the foam particle molded body to be exposed.SOLUTION: In a molding die of this invention, a fixation structure 20 for fixing a protruding part 4 to the molding die 10 includes a first fixture 20a. When fixing the protruding part 4 to the first fixture 20a, a positioning pin 29a is inserted between columnar parts 4a of the substantially U-shaped protruding part 4 by approximating the protruding part 4 housed in a housing body 21 and a fixation body 27 to each other, the protruding part 4 is fixed between a positioning part 25 of the housing body 21 and the fixation body 27, and an opening part 22 of the housing body 21 is closed by a shutter 28.SELECTED DRAWING: Figure 8 【課題】発泡粒子成形体に埋設された剛性部材の一部が、発泡粒子成形体から露出して突出する略Ｕ字状の突出部を有するインサート成形体を型内成形するに際し、突出部周辺のバリの発生を抑制すると共に、突出部の位置精度を高くする。【解決手段】突出部４を成形型１０に固定するための固定構造２０が第一の固定具２０ａを備え、第一の固定具２０ａに突出部４を固定するに際し、収容体２１に収容された突出部４と固定体２７とが接近することで、略Ｕ字状の突出部４の柱部４ａ間に位置決めピン２０ａが挿入されて、収容体２１の位置決め部２５と固定体２７との間に突出部４を固定すると共に、収容体２１の開口部２２をシャッター２８により閉塞する。【選択図】図８