JPH0248256U

JPH0248256U -

Info

Publication number: JPH0248256U
Application number: JP12662388U
Authority: JP
Priority date: 1988-09-28
Filing date: 1988-09-28
Publication date: 1990-04-03
Also published as: JPH0324276Y2

Description

[Brief explanation of drawings]

図は本考案になる真空ダイカスト装置の一実施
例を示すもので、第１図は縦断面図、第２図は第
１図―線における縦断面図である。３……射出シリンダースリーブ、６……プラン
ジヤーチツプ、６Ａ……後端平坦部、６Ｃ……第
１真空圧導入路、７……背圧調節室、８……射出
プランジヤー、８Ａ……平坦部、８Ｂ……挿入孔
、８Ｄ……第２真空圧導入路、９……固定用ロツ
ド、９Ａ……第１ネジ部、９Ｂ……第２ネジ部、
１０……ナツト、１２……ピストンロツド、１３
……カプラー。 The drawings show an embodiment of the vacuum die-casting apparatus according to the present invention, in which FIG. 1 is a longitudinal cross-sectional view, and FIG. 2 is a longitudinal cross-sectional view taken along the line of FIG. 1. 3... Injection cylinder sleeve, 6... Plunger tip, 6A... Rear end flat portion, 6C... First vacuum pressure introduction path, 7... Back pressure adjustment chamber, 8... Injection plunger, 8A... Flat Part, 8B...Insertion hole, 8D...Second vacuum pressure introduction path, 9...Fixing rod, 9A...First threaded part, 9B...Second threaded part,
10...nut, 12...piston rod, 13
……coupler.

Claims

[Scope of Claim for Utility Model Registration] A vacuum die casting device that maintains a vacuum inside the cavity and injects molten metal in an injection cylinder sleeve into the cavity with a plunger tip, the plunger sliding inside the injection cylinder sleeve. A piston rod 12 integrally connected to an injection cylinder 11 in a vacuum die-casting device in which a back pressure adjustment chamber is provided on the outer periphery of the jet, and vacuum pressure is introduced into the back pressure adjustment chamber during injection molding using a plunger jet; A cylindrical injection cylinder having an outer diameter smaller than the sleeve diameter φA of the injection cylinder sleeve 3, an insertion hole 8B passing through the inside in the longitudinal axis direction, and a flat part 8A on the side where the plunger tip 6 is mounted. plunger 8; a first threaded portion 9A and a second threaded portion 9B at both ends thereof;
a fixing rod 9 having a fixing rod 9 with the first threaded portion 9A and second threaded portion 9B protruding from both ends of the injection plunger 8 when placed in the insertion hole 8B in the injection plunger 8; a plunger tip 6; A first vacuum pressure introduction path 6C is opened from the annular back pressure adjustment chamber 7 provided on the outer periphery of the injection plunger 8 to the rear end flat portion 6A provided on the flat portion 8A side of the injection plunger 8 through the inside thereof. Plunger tip 6 in which a female threaded portion 6B is bored inward in the longitudinal axis direction from the rear end flat portion 6A.
and; a second vacuum pressure introducing path 8D that is bored in the injection plunger, one end of which is open to the flat part 8A of the injection plunger 8, and the other end of which is connected to the vacuum source P.
Then, the female threaded portion 6B of the plunger tip 6 is screwed onto the first threaded portion 9A of the fixing rod 9, and the first vacuum pressure introduction passage 6C to be bored in the plunger tip 6 and the injection plunger 8 are connected. Second
The plunger tip 6 is fixed to the injection plunger 8 by aligning the opposing opening positions of the vacuum pressure introduction path 8D and tightening the second threaded portion 9B of the fixing rod 9 to the injection plunger with the nut 10, and then A vacuum die-casting device in which an injection plunger 8 and a piston rod 12 are integrally connected by a coupler 13.