JPS61177749U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示す断面図である。 ２：下鋳型、６：中鋳型、１０：上鋳型。 FIG. 1 is a sectional view showing an embodiment of the present invention. 2: Lower mold, 6: Middle mold, 10: Upper mold.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上面中央部に円柱形の突出部４を有すると共に
該突出部４の基部外周にフランジ部鋳造用の凹部
５を形成した下鋳型２と、該下鋳型２の上部に重
ねられる鋳型であつて前記突出部４を遊嵌包囲す
る貫通孔８を有すると共に前記凹部５の上部をそ
の下面により塞ぎ、もつて前記下鋳型２とにより
断面Ｌ形環状キヤビテイ９を構成する中鋳型６と
、前記中鋳型６の上部に重ねられる鋳型であつて
下面中央部に円柱形の突起部１２を有すると共に
該突起部１２の基部外周にフランジ部鋳造用の凹
部１３を形成し、該突起部１２を前記貫通孔８に
遊嵌挿入しもつて前記突出部４の上端に接合させ
ると共に前記凹部１３を前記中鋳型６の上面で塞
ぐようにして型合せされて前記断面Ｌ形環状キヤ
ビテイ９の上部に断面逆Ｌ形環状キヤビテイ１４
を連通構成させる上鋳型１０と、により構成され
たマンホール枠鋳造用組立鋳型。 A lower mold 2 having a cylindrical protrusion 4 at the center of the upper surface and a recess 5 for casting a flange part formed on the outer periphery of the base of the protrusion 4, and a mold stacked on the upper part of the lower mold 2. a middle mold 6 having a through hole 8 that loosely fits and surrounds the protrusion 4, and closing the upper part of the recess 5 with its lower surface, thereby forming an annular cavity 9 with an L-shaped cross section with the lower mold 2; 6, which has a cylindrical protrusion 12 in the center of its lower surface, and a recess 13 for casting the flange part is formed on the outer periphery of the base of the protrusion 12, and the protrusion 12 is inserted into the through hole. 8, and is joined to the upper end of the protrusion 4, and the molds are matched so that the recess 13 is closed with the upper surface of the middle mold 6, and an inverted L cross section is formed in the upper part of the annular cavity 9, which has an L cross section. Annular shaped cavity 14
An assembly mold for casting a manhole frame, comprising: an upper mold 10 that communicates with the upper mold 10;