JPH0253857U

JPH0253857U -

Info

Publication number: JPH0253857U
Application number: JP13086688U
Authority: JP
Priority date: 1988-10-05
Filing date: 1988-10-05
Publication date: 1990-04-18

Description

[Brief explanation of drawings]

第１図は本考案に係る中子を使用してダイキヤ
ストさるべきシリンダブロツクの部分的平面図、
第２図は第１図の―線に沿う断面図、第３図
は第１図及び第２図に示したシリンダブロツクの
ダイキヤスト用金型の断面図、第４図は第３図に
示した金型内における中子セツトの配置を示した
正面図、第５図は本考案の第１実施例を示す中子
セツト２６の斜視図、第６図は本考案の第２実施
例を示す中子セツト２６の斜視図、第７図は従来
のダイキヤスト製シリンダブロツクの平面図、第
８図は第７図の―線に沿う断面図である。１０……シリンダブロツク、１２……シリンダ
、１４……冷却水室、１６……シリンダブロツク
のアツパデツキ、１８……冷却水通路、２０……
第１金型、２２……第２金型、２４……凹溝、２
６……中子セツト、２８……第１中子部片、３０
，３０ａ，３０ｂ……第２中子部片。 FIG. 1 is a partial plan view of a cylinder block to be die-cast using the core according to the present invention;
Figure 2 is a sectional view taken along the line - in Figure 1, Figure 3 is a sectional view of the die casting mold for the cylinder block shown in Figures 1 and 2, and Figure 4 is the same as shown in Figure 3. FIG. 5 is a front view showing the arrangement of the core set in the mold, FIG. 5 is a perspective view of the core set 26 showing the first embodiment of the invention, and FIG. 6 is a middle view showing the second embodiment of the invention. FIG. 7 is a perspective view of the child set 26, FIG. 7 is a plan view of a conventional die-cast cylinder block, and FIG. 8 is a sectional view taken along the line -- in FIG. 10... Cylinder block, 12... Cylinder, 14... Cooling water chamber, 16... Cylinder block top deck, 18... Cooling water passage, 20...
First mold, 22...Second mold, 24...Concave groove, 2
6... Core set, 28... First core piece, 30
, 30a, 30b... second core piece.

Claims

[Scope of utility model registration request]

An aluminum alloy cylinder block in which a cooling water chamber surrounded by the outer periphery of the cylinder opens to the deck end face on the cylinder head side through a plurality of arcuate cooling water passages formed at intervals in the circumferential direction. The core for the die-cast mold consists of a plurality of prefabricated metal core sets divided in the circumferential direction, each of which is removably attached to the mold body and limits the cooling water chamber and cooling water passage. , each core set includes at least one first core piece that can be immediately removed from the cooling water passage of the cylinder block in the cylinder axial direction after casting;
and at least one second core piece that can be moved first in the circumferential direction and then pulled out in the cylinder axial direction after the core piece is extracted. Core for cylinder block die casting.