SCREW WITH BACKFLOW PREVENTION MECHANISM, INJECTION MOLDING DEVICE EQUIPPED WITH THE SAME, AND BACKFLOW PREVENTION RING

To provide a screw with an excellent backflow prevention mechanism.SOLUTION: A screw with a backflow prevention mechanism according to one embodiment includes: a screw body part; a pressing metal fixed to a tip of the screw body part; a screw head provided on a tip side away from the pressing metal;...

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Bibliographische Detailangaben
Hauptverfasser:	CHIBA HIDETAKA, YASUE AKIRA, UMEDA MITSUHIDE, ARAKI KATSUYUKI, KUNIHIRO DAISUKE, KOYAMATSU HIROSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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
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Beschreibung
Zusammenfassung:	To provide a screw with an excellent backflow prevention mechanism.SOLUTION: A screw with a backflow prevention mechanism according to one embodiment includes: a screw body part; a pressing metal fixed to a tip of the screw body part; a screw head provided on a tip side away from the pressing metal; a connection shaft connecting the pressing metal and the screw head; and a cylindrical backflow prevention ring provided between the pressing metal and the screw head to cover the connection shaft and to be slidable in an axial direction. One or more chamfers extending at least partially in the axial direction are formed on an outer peripheral surface of the backflow prevention ring.SELECTED DRAWING: Figure 1 【課題】優れた逆流防止機構付きスクリュを提供すること。【解決手段】一実施形態に係る逆流防止機構付きスクリュは、スクリュ本体部と、前記スクリュ本体部の先端に固定された押金と、前記押金から離間して先端側に設けられたスクリュヘッドと、前記押金と前記スクリュヘッドとを連結する連結軸と、前記押金と前記スクリュヘッドとの間において、前記連結軸を覆うと共に軸方向にスライド自在に設けられた円筒状の逆流防止リングと、を備える。逆流防止リングの外周面に、少なくとも部分的に軸方向に延びた１つ以上の面取り部が形成されている。【選択図】図１