JPH0443444U

JPH0443444U -

Info

Publication number: JPH0443444U
Application number: JP8433690U
Authority: JP
Priority date: 1990-08-08
Filing date: 1990-08-08
Publication date: 1992-04-13

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す要部縦断面図、
第２図ａは同要部平面図、第２図ｂ，ｃは各々第
１図におけるＡ−Ａ線断面図およびＢ−Ｂ線断面
図、第２図ｄはシール部材の変形例を示す要部平
面図、第３図は本考案の他の実施例を示す要部縦
断面図、第４図ないし第６図は夫々鋳型を造型す
る例を示す要部縦断面図である。１０……筒体、１３……ボール列、１５，２０
……シール部材、１６，１６ａ……スリツト、１
９……ガイドピン、２１……圧縮コイルばね。 FIG. 1 is a vertical sectional view of the main part showing an embodiment of the present invention.
Figure 2a is a plan view of the same essential parts, Figures 2b and 2c are sectional views taken along the lines AA and BB in Figure 1, respectively, and Figure 2d is a schematic diagram showing a modification of the seal member. FIG. 3 is a longitudinal cross-sectional view of a main part showing another embodiment of the present invention, and FIGS. 4 to 6 are longitudinal cross-sectional views of main parts showing an example of molding a mold, respectively. 10... Cylindrical body, 13... Ball row, 15, 20
... Seal member, 16, 16a ... Slit, 1
9... Guide pin, 21... Compression coil spring.

Claims

[Scope of Claim for Utility Model Registration] (1) A model surface plate formed in the form of a flat plate or a casting flask formed in the shape of a hollow cylinder, with a guide pin protruding from the parting surface of another flask or model surface plate near the periphery thereof. In a casting bush formed so as to provide a fitting guide hole to position the model surface plate and the flask or each other, a hollow cylinder with a bottom that forms the guide hole, A plurality of rows of balls are provided in the axial direction of the cylinder body so as to be able to circulate freely through respective cages and to be able to roll in contact with the outer peripheral surface of the guide pin, and the opening of the cylinder body is made of a flexible elastic material. 1. A casting bush comprising a sealing member having a slit formed to allow passage of a guide pin. (2) A guide hole is provided near the periphery of a model surface plate formed in a flat plate shape or a casting flask formed in a hollow cylindrical shape to fit with a guide pin protruding from the cutout surface of another flask or model surface plate. In the casting bush formed to position the model surface plate and the casting flask or each other, a plurality of holes are formed in the hollow cylinder with a bottom that forms the guide hole in the axial direction of the cylinder. A sealing member formed in the opening of the cylindrical body and having substantially the same shape and dimensions as the guide pin is provided in the opening of the cylindrical body. Provided to be slidable in the axial direction of the cylinder,
1. A casting bush, characterized in that a compression coil spring is fitted into the cylindrical body to press the sealing member toward the opening.