JPS583747A

JPS583747A - Mold for casting

Info

Publication number: JPS583747A
Application number: JP10079581A
Authority: JP
Inventors: Akira Washida; 鷲田　彰
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-06-29
Filing date: 1981-06-29
Publication date: 1983-01-10

Abstract

PURPOSE:To provide molds for casting which permit easy removing of the fins of casting by the constitution wherein the fins of castings are put in the channels provided on the surfaces to serve as mating surfaces in the periphery of the cavities to form products. CONSTITUTION:Molten metal, that is, a melt, is charged through a charing port 9, and is filled in a cavities 7 and flow off sprues 10 where it is solidified. The casting obtained by this is formed with fins in the periphery of the cavities 7 to be products and these fins are filled in the channels 11 provided on the mating surfaces 8 of a top part 1 and a bottom part 2. It the casting parts corresponding to the channels 11 are tapped, stresses are concentrated in the spacings S between these parts and the casting parts corresponding to the cavities 7, that is, the products, whereby the casting parts corresponding to the channels 11 can be easily removed from the products. As a result the fins attached to the product parts are min. and are approximately equal in height. The subsequent fettling is not necessary or just slight finsishing is required.

Description

【発明の詳細な説明】本発明は、製品となるべき空所の周辺において、合わせ
面となるべき面に溝を設け、この溝内に鋳物のぼりを入
り込ませることを特徴とする鋳物用型に関するもので、
その目的とするところは、鋳物のぼりを、容易に取り除
き得る鋳物用型を得るにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a casting mold characterized in that a groove is provided on a surface to be a mating surface around a cavity to be a product, and a casting mold is inserted into the groove. Something,
The purpose is to obtain a mold for casting from which casting flags can be easily removed.

本発明鋳物用型を例示図面により説明する。The casting mold of the present invention will be explained with reference to illustrative drawings.

型（６）から成る。（７）は空所であって、溶融金属を
注湯し固化させて製品とするべき部分である。It consists of a type (6). (7) is a void where molten metal is poured and solidified to form a product.

（８）は上型と下型の合わせ面である。（９）は注湯口
、（１０）はあがり湯口である。(8) is the mating surface of the upper mold and the lower mold. (9) is the pouring spout, and (10) is the rising sprue.

空所（７）の周辺においてこの空所に近接して、合わせ
面（８）には、一連の＠（１１）を設ける。この様に構
成し、注湯口（９）から溶融金属即ち湯を注入し、空所
（７）内及びあがり湯口にこれを充満させて後固化させ
る。At the periphery of the cavity (7) and close to this cavity, the mating surface (8) is provided with a series of @ (11). With this structure, molten metal, ie, hot water, is injected from the pouring spout (9), filling the cavity (7) and the rising sprue, and solidifying it afterward.

こうして得た鋳物は、製品となるべき空所の周辺にはば
りがはみ出し、このばりは溝（１１）内にも充満してい
る。そこで、溝（１１）に相当する鋳物部分を叩くと、
この＠、（１１）に相当する部分と空所（慢に相当する
鋳物部分即ち製品部分との間（Ｓ）に応力が集中し、溝
に相当する鋳物部分は、容易に製品から除去され、製品
部に付くばりは最小で、高さもほぼ等しいものとなる。In the thus obtained casting, burrs protrude around the voids that are to be used as products, and the burrs also fill the grooves (11). So, when you hit the casting part corresponding to the groove (11),
Stress is concentrated between the part corresponding to this @, (11) and the hollow space (the casting part corresponding to the groove, that is, the product part (S)), and the casting part corresponding to the groove is easily removed from the product. The burrs attached to the product parts are minimal and the heights are almost the same.

従って、その後のはりの仕上は不要となるか、またはわ
ずかな仕上げですむのである。Therefore, subsequent finishing of the beam is not necessary or only slight finishing is required.

本・発明鋳物用型は、主として鋳鉄の如く折れ易いもの
に実施するが、ダクタイル鋳鉄あるいは銅合金のような
ねばりのある材料についても、実施「能１あり・そ″場
合も・　タガネなどでばりを除去する際、前述の応力集
中があるので、やはりば抄の除去がしやすく、仕上等も
容易である。The foundry mold of this invention is mainly applied to materials that break easily, such as cast iron, but it can also be applied to sticky materials such as ductile cast iron or copper alloy. Since there is the stress concentration mentioned above when removing the paper, it is easy to remove the paper and the finishing etc. are also easy.

[Brief explanation of the drawing]

図面は本発明鋳物用屋の実施例を示す縦断側面図である
。（１）・・・上型。　　（２）・・・下型。　　（３）
・・・上枠。（４）・・・砂型。　　（５）・・・下枠。　　（６）
・・・砂型。（７）・・・空所。　　（８）・・・合わせ面。（９）・・・注湯口。　（１０）・・・あがり湯口。（１１）・・・溝。特許出願人　　鷲　１）　彰The drawing is a longitudinal sectional side view showing an embodiment of the foundry of the present invention. (1)...Upper mold. (2)...Lower mold. (3)
...Top frame. (4)...Sand mold. (5)...Bottom frame. (6)
...Sand mold. (7)... Blank space. (8)...Mating surface. (9)...Pouring spout. (10)...Agari sprue. (11)...Groove. Patent applicant: Washi 1) Akira

Claims

[Claims]

A casting mold characterized in that a groove is provided on a surface that is to be a mating surface around a void that is to be a product, and a casting burr is inserted into the groove.