JPS6372449A - Green sand core molding device - Google Patents

Green sand core molding device

Info

Publication number
JPS6372449A
JPS6372449A JP61216568A JP21656886A JPS6372449A JP S6372449 A JPS6372449 A JP S6372449A JP 61216568 A JP61216568 A JP 61216568A JP 21656886 A JP21656886 A JP 21656886A JP S6372449 A JPS6372449 A JP S6372449A
Authority
JP
Japan
Prior art keywords
mold
recess
core
green sand
sand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP61216568A
Other languages
Japanese (ja)
Other versions
JPH0527502B2 (en
Inventor
Nagato Unosaki
鵜崎 永人
Isao Atsumi
渥美 猪三男
Koichi Kanefuji
公一 金藤
Hisashi Harada
久 原田
Kunihiro Hashimoto
邦弘 橋本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sintokogio Ltd
Original Assignee
Sintokogio Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP61216568A priority Critical patent/JPS6372449A/en
Publication of JPS6372449A publication Critical patent/JPS6372449A/en
Publication of JPH0527502B2 publication Critical patent/JPH0527502B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C15/00Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/28Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Abstract

PURPOSE:To enable molding of intricately shaped cores having uniform strength and good accuracy with a molding device for the cores which are thicker in the central part than in the peripheral part by compressing the preforms molded in the recess of a metallic mold deeper than the height of the product. CONSTITUTION:The metallic mold 11 is traversed right above a table 12 by a roller conveyor 6 and the table 12 is raised to impose and saise the mold 11. A cavity 25 having a prescribed shape is delineated of a recess 15 on the front surface side of the mold 11 and a recess 24 deeper than the height of the front surface shape of the desired core in the central part of the rear surface of a sand blowing mold 26. Compressed air is supplied into a blow tank 21 above the mold 26 and the green sand in the tank is blown and packed through a hole 27 into the cavity 25. The mold 11 and mold 26 are separated and the preform which is held in the mold 11 is obtd. in this state when the mold 11 is lowered together with the table 12 after releasing pressure remaining in the tank 21. The mold 11 is then moved to right under a compressing mold 37 and the mold 37 is lowered down to the prescribed depth of the recess 15, by which the preform is compressed and the green sand core is obtd.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は生砂中子造型装置に関し、更に詳しくは、中央
部の厚みが周辺部のそれよりも大きい形状の生砂中子を
造型可能な装置に関する。
[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a green sand core molding device, and more specifically, it is capable of molding a green sand core in which the central portion is thicker than the peripheral portion. related to equipment.

(従来技術) 中子は主として強度上及び寸法精度上の理由から、シェ
ルモールド法、コールドボックス法、CO2法などによ
り造型されるのが通例であるが、このような方法で作ら
れた中子は高価であると共に、生砂から成る主型とは性
實を異にするため、注湯後の砂再生処理上問題がある。
(Prior art) Cores are usually molded by shell molding, cold box method, CO2 method, etc. mainly for reasons of strength and dimensional accuracy. This mold is expensive and has different properties from the main mold made of green sand, so there are problems in the sand recycling process after pouring.

このため近時、主型と同じ生砂を用いて中子を造型する
方法が種々試みられており、比較的単純な形状の中子に
ついては、実用に供し得るものが造型されるようになっ
ている(例えば特開昭55−139143号公報、特開
昭57−195555号公報等)。しかし複雑な形状の
中子について均一な強度と良好な寸法精度を備えたもの
を造型することは困難であった。
For this reason, various methods of molding cores using the same raw sand as the main mold have recently been attempted, and cores of relatively simple shapes that can be used for practical purposes have been molded. (For example, JP-A-55-139143, JP-A-57-195555, etc.). However, it has been difficult to mold a complex-shaped core with uniform strength and good dimensional accuracy.

(発明の目的) 本発明は上記のような事情に鑑みてなされたものであり
、均一な強度と良好な寸法精度を備えた複雑形状の生砂
中子、特に中央部の厚みが周辺部のそれよりも大きい形
状の生砂中子を造型可能な装置を提供せんとするもので
ある。
(Objective of the Invention) The present invention has been made in view of the above circumstances, and provides a complex-shaped green sand core with uniform strength and good dimensional accuracy, in particular a green sand core whose thickness at the center is smaller than that at the periphery. The purpose of the present invention is to provide an apparatus capable of molding green sand cores having a larger shape.

(発明の構成) 以下、本発明を実施例に基づき詳細に説明すると、第1
図は本発明に係る生砂中子造型装置を示し、(1)は門
型フレームであり、該門型フレーム(1)は下部フレー
ム(2)、該下部フレーム(2)上の4隅に立設された
支柱(3) (4)及び該支柱(3)(4)の上端間を
接続する上部フレーム(5)から成っている。(6)は
ローラコンベヤであり、該ローラコンベヤ(6)は平面
が矩形のローラフレーム(7)と該フレーム(7)の二
長辺の対向面に取付けられた多数のつば付きローラ(8
)から成っていて、該ローラフレーム(7)は門型フレ
ーム(1)のやや下端寄りの位置で左右の支柱(3) 
(4)間に水平に架は渡されている。
(Structure of the Invention) Hereinafter, the present invention will be explained in detail based on Examples.
The figure shows a green sand core making apparatus according to the present invention, (1) is a gate-shaped frame, and the gate-shaped frame (1) has a lower frame (2) and four corners on the lower frame (2). It consists of upright pillars (3) and (4) and an upper frame (5) that connects the upper ends of the pillars (3) and (4). (6) is a roller conveyor, and the roller conveyor (6) includes a roller frame (7) having a rectangular plane and a large number of flanged rollers (8) attached to opposing surfaces of two long sides of the frame (7).
), and the roller frame (7) is connected to the left and right supports (3) at a position slightly near the lower end of the portal frame (1).
(4) A rack is passed horizontally between them.

前記下部フレーム〔2〕上には、図面の向って右手かつ
前記ローラコンベヤ(6)の真下に位置して上向きのシ
リンダ(9)が立設されており、該シリンダ(9)のピ
ストンロッドの先端には、その表面積及び形状が後述す
る金型(11)の底面積及び形状とほぼ等しいテーブル
(12)が固着されていて、該テーブル(12)は前記
ローラフレーム(7)の中空部を貫通して昇降するよう
に設計されている。
An upwardly facing cylinder (9) is installed on the lower frame [2], located on the right hand side as viewed from the drawing and directly below the roller conveyor (6), and the piston rod of the cylinder (9) A table (12) whose surface area and shape are approximately equal to the bottom area and shape of a mold (11), which will be described later, is fixed to the tip, and the table (12) extends through the hollow part of the roller frame (7). It is designed to go up and down through it.

前記ローラコンベヤ(6)上には、上下を開口し。Above the roller conveyor (6), the top and bottom are open.

た枠体状の走行フレーム(13)が載置されており、該
走行フレーム(13)上には、その上端寄りの外周部に
フランジを備えた金型(11)が該フランジを介して切
離可能に載置されていて、両者は図示しない位置決めピ
ンにより位置合わせされるようになっている。
A frame-like running frame (13) is mounted on the running frame (13), and a mold (11) having a flange on the outer periphery near the upper end is cut through the flange. They are placed so that they can be separated from each other, and are aligned using positioning pins (not shown).

前記ローラコンベヤ(6)の右端部には左向きのシリン
ダ(14)が配設されており、該シリンダ(14)ノヒ
ストンロッドの先端は前記走行フレーム(13)の右側
壁にピン連結されていて、その結果、該シリンダ(13
)の伸縮作動により前記金型(11)が走行フレーム(
13)を介してローラコンベヤ(6)上を往復動可能に
されている。
A left-facing cylinder (14) is disposed at the right end of the roller conveyor (6), and the tip of the cylinder rod (14) is connected with a pin to the right side wall of the traveling frame (13). , as a result, the cylinder (13
), the mold (11) moves to the traveling frame (
13) so that it can reciprocate on a roller conveyor (6).

前記金型(11)の上半部分における上面側には段付凹
部(15)が形成されており、また下半部分内には空胴
部(16)が形成されていて、該空胴部(16)は該金
型(11)の底面に設けられた開口(17)を介して大
気と連通している。なお該金型(11)の底面レベルと
前記シリンダ(9)の縮引時における前記テーブル(1
2)の上面レベルとの間には若干の隙間が存するように
設計されている。前記空胴部(16)内には、その上面
に複数個の押出しピン(18)を植設した押出板(19
)が配設されており、該押出しピン(18)は前記金型
(11)の上半部分における底面側を貫通して段付凹部
(15)へ突出可能にされている。
A stepped recess (15) is formed in the upper surface of the upper half of the mold (11), and a cavity (16) is formed in the lower half of the mold (11). (16) communicates with the atmosphere through an opening (17) provided at the bottom of the mold (11). Note that the bottom level of the mold (11) and the table (1) when the cylinder (9) is retracted are
2) It is designed so that there is a slight gap between it and the upper surface level. Inside the cavity (16) is an extrusion plate (19) having a plurality of extrusion pins (18) implanted on its upper surface.
) is provided, and the extrusion pin (18) can penetrate the bottom side of the upper half of the mold (11) and protrude into the stepped recess (15).

なお前記金型(11)の段付凹部(15)は段のない凹
部にしてもよい。
Note that the stepped recess (15) of the mold (11) may be a recess without a step.

前記テーブルCl2)の上方にはブロータンク(21)
が前記上部フレーム(5)に支持されて配設されており
、該ブロータンク(21)内には所定量の生砂が収容可
能にされているとともに、図示しない圧縮空気源より圧
縮空気が供給可能にされている。
Above the table Cl2) is a blow tank (21).
is supported by the upper frame (5), and a predetermined amount of green sand can be stored in the blow tank (21), and compressed air is supplied from a compressed air source (not shown). is made possible.

なお(22)は該ブロータンク(21)の上端開口をD
FI閉するスライドゲート、(23)は該スライドゲー
ト(22)を往復動させるシリンダである。
Note that (22) is the upper end opening of the blow tank (21).
The slide gate (23) that closes the FI is a cylinder that reciprocates the slide gate (22).

前記ブロータンク(21)の下端部には、その下面側中
央部に所望中子の上面形状高さよりも深い凹部(24)
を形成すると共に、該金型(11)の上段凹部に所定深
さまで摺動して嵌入し、以て所定形状のキャビティ(2
5)を画成する砂吹込み型(26)が固着されており、
該ブロータンク(21)の底板中央部と砂吹込み型(2
6)の中央部とを貫通して砂吹込み孔(27)が穿設さ
れている。なお(28)は一端を前記砂吹込み型(26
)の下面周辺部に開口すると共に他端を核型(26)の
側壁に開口する排気口であり、(29)はベントプラグ
である。前記ブロータンク(21)の下面外周部にはス
トッパ(31)が前記砂吹込み型(26)を包囲して固
着されており、該ストッパ(31)の下面は前記金型(
11)の上面外周部と当接可能にされている。なお通常
状態においては、前記金型(11)の上面レベルと前記
砂吹込み型(26)の下面しベルとの間には所定の間隔
が存するように設計されている。
The lower end of the blow tank (21) has a recess (24) deeper than the height of the desired upper surface of the core at the center of the lower surface thereof.
, and slides and fits into the upper recess of the mold (11) to a predetermined depth, thereby forming a cavity (2) of a predetermined shape.
5) is fixed to the sand blowing mold (26),
The central part of the bottom plate of the blow tank (21) and the sand blowing mold (2)
A sand blowing hole (27) is bored through the central part of the hole (6). Note that (28) has one end attached to the sand blowing mold (26).
) is an exhaust port that opens on the periphery of the lower surface of the mold (26) and has the other end opened on the side wall of the nuclear mold (26), and (29) is a vent plug. A stopper (31) is fixed to the outer periphery of the lower surface of the blow tank (21) surrounding the sand blowing mold (26), and the lower surface of the stopper (31) is fixed to the outer circumference of the lower surface of the blow tank (21).
11) is able to come into contact with the outer peripheral portion of the upper surface. In the normal state, the design is such that a predetermined distance exists between the upper surface level of the mold (11) and the lower bell of the sand blowing mold (26).

前記下部フレーム(2)上におけろ図面の向って左手か
つ前記ローラコンベヤ(6)の真下位置には、シリンダ
(32)が上向きに立設されており、該シリンダ(32
)のピストンロッドの先端には、前記金型(11)の底
面開口(17)に遊嵌可能な形状をした押上板(33)
が固着されている。
A cylinder (32) is erected upward on the lower frame (2) on the left side as viewed from the drawing and directly below the roller conveyor (6).
) at the tip of the piston rod is a push-up plate (33) shaped to fit loosely into the bottom opening (17) of the mold (11).
is fixed.

なお前記金型(11)の底面レベルと前記シリンダ(3
2)の縮引時における前記押上板(33)の上面レベル
との間にも若干の隙間が存するようにされている。
Note that the bottom level of the mold (11) and the cylinder (3)
There is also a slight gap between the upper surface level of the push-up plate (33) and the upper surface level when the push-up plate (33) is retracted in step 2).

前記押上板(33)の上方には下向きのシリンダ(34
)が上部フレーム(5)に支持されて配設されており、
該シリンダ(34)のピストンロッドの先端には、その
下面中央部に所望中子の上面形状と同形状の凹部(35
)を形成すると共に、該金型(11)の上段凹部に所定
深さまで摺動して嵌入し、以て所定形状のキャビティ(
36)を画成する圧縮型(37)が取付部材(38)を
介して固着されている。前記取付部材(38)の下面外
周部にもストッパ(39)が前記圧縮型(37)を包囲
して固着されており、該ストッパ(39)の下面は前記
金型(11)の上面外周部と当接可能にされている。な
お前記圧縮型(37)と金型(11)の段付凹部(15
)とにより画成されるキャビティ(36)は製品(中子
)の最終形状を成している。
Above the push-up plate (33) is a downward cylinder (34).
) is supported and arranged by the upper frame (5),
At the tip of the piston rod of the cylinder (34), a recess (35
), and slides and fits into the upper recess of the mold (11) to a predetermined depth, thereby forming a predetermined-shaped cavity (
A compression mold (37) defining a compression mold (36) is fixed via a mounting member (38). A stopper (39) is also fixed to the outer periphery of the lower surface of the mounting member (38) surrounding the compression mold (37), and the lower surface of the stopper (39) is attached to the outer periphery of the upper surface of the mold (11). It is possible to come into contact with. Note that the stepped recesses (15) of the compression mold (37) and the mold (11)
) defines the final shape of the product (core).

(作用) 上記のように構成された装置において、テーブル(12
) 、押上板(33)及び圧縮型(37)を縮引させた
状態で、第1工程としてシリンダ(14)を縮引作動し
て金型(11)をテーブル(12)の真上に位置させる
(Function) In the apparatus configured as described above, the table (12
), with the push-up plate (33) and compression mold (37) retracted, as a first step, the cylinder (14) is retracted to position the mold (11) directly above the table (12). let

第2工程としてシリンダ(9)を伸長作動して前記テー
ブル(12)を上昇させると、該テーブル(12)の上
面が前記金型(11)の底面に当接してこれを持上げ、
これにより該金型(11)は走行フレーム(13)から
切離される。やがて該金型(11)の上段凹部内へ砂吹
込み型(26)が相対的に摺動・嵌入し、所定深さまで
嵌入した時、該金型(11)の上面外周部がストッパ(
31)に当接してシリンダ(9)の伸長ならびに金型(
11)の上昇が停止する。その結果、金型(11)の段
付凹部(15)と砂吹込み型(26)とにより所定形状
のキャビティ(25)が画成される。今、該キャビティ
(25)の形状を詳細に説明すると、該キャビティ(2
5)は第2図に示す如(、段付凹部を上下に対向させた
形状を成しているが、下半部分の段付凹部が最終製品(
中子)の形状を成しているのに対し、上半部分のそれは
最終製品の形状よりも上下方向の寸法が拡大されており
、しかも該拡大寸法は中央厚肉部と周辺薄肉部とで異な
る。すなわち、中央厚肉部における拡大寸法(6′)は
周辺薄肉におけろ拡大寸法(α′)よりも大きく、かつ
両者の寸法比率は最終製品における中央厚肉部(句と周
辺薄肉部(α)との寸法比率に等しくされている。
As a second step, when the cylinder (9) is extended and the table (12) is raised, the top surface of the table (12) comes into contact with the bottom surface of the mold (11) and lifts it;
As a result, the mold (11) is separated from the traveling frame (13). Eventually, the sand blowing mold (26) will relatively slide and fit into the upper recess of the mold (11), and when it has been fitted to a predetermined depth, the outer periphery of the upper surface of the mold (11) will touch the stopper (
31), the cylinder (9) extends and the mold (
11) stops rising. As a result, a cavity (25) having a predetermined shape is defined by the stepped recess (15) of the mold (11) and the sand blow mold (26). Now, to explain the shape of the cavity (25) in detail, the shape of the cavity (25) will be explained in detail.
5) has a shape in which the stepped recesses are vertically opposed, as shown in Figure 2, but the stepped recesses in the lower half of the final product (
The shape of the upper half is larger than that of the final product in the vertical direction, and the enlarged dimension is divided into the thick central part and the thin peripheral part. different. In other words, the enlarged dimension (6') in the central thick wall part is larger than the enlarged dimension (α') in the peripheral thin wall part, and the ratio of the two dimensions is the same as that of the central thick part (6') and the peripheral thin wall part (α') in the final product. ) and are made equal to the dimensional ratio.

第3工程として上端開口を閉鎖したブロータンク(21
)内へ圧縮空気を供給し、内部に収容されている生砂を
砂吹込み孔(27)を経て前記キャビティ(25)内へ
吹込み充填する。なおこの時、砂と共にキャビティ(2
5)内へ吹込まれた圧縮空気は排気孔(28)を経て大
気中へ排出される。
As the third step, the blow tank (21
), and the green sand contained therein is blown and filled into the cavity (25) through the sand blowing hole (27). At this time, the cavity (2
5) The compressed air blown into the interior is discharged into the atmosphere through the exhaust hole (28).

生砂の吹込み充填完了後、ブロータンク(21)内の残
圧を排除した上、第4工程として前記シリンダ(9)を
縮引作動させて前記金型(11)をテーブル(12)と
共に下降させると、該金型(11)と前記砂吹込み型(
26)とが分離し、その結果、中子の予備成形体が金型
(11)の段付凹部(15)に保持された状態で得られ
る。
After the blowing and filling of green sand is completed, the residual pressure in the blow tank (21) is eliminated, and as a fourth step, the cylinder (9) is retracted to move the mold (11) together with the table (12). When lowered, the mold (11) and the sand blowing mold (
26), and as a result, a core preform is obtained in a state held in the stepped recess (15) of the mold (11).

前記金型(11)はやがて走行フレーム(13)上に係
止されて下降を停止し、前記テーブル(12)がひとり
下降端まで下降する。
The mold (11) is eventually stopped on the traveling frame (13) and stops descending, and the table (12) descends alone to the lower end.

第5工程として前記シリンダ(14)を伸長作動させて
前記金型(11)を圧縮型(37)の真下まで移動させ
る。そして第6エ程としてシリンダ(34)を伸長作動
させて圧縮型(37)を下降させると、該圧縮型(37
)は前記金型(11)の上段凹部内へ摺動して嵌入し、
該金型(11)内に保持されている中子の予備成形体を
圧縮する。該圧縮型(37)が所定深さまで嵌入した時
、金型(11)の上面外周部がストッパ(39)に当接
して前記シリンダ(34)の伸長ならびに圧縮型(37
)の下降が停止する。第7エ程として前記シリンダ(3
4)を縮引作動させて圧縮型(37)を引き上げると、
該圧縮型(37)が金型(11)から分離し、その結果
、所望形状の中子が金型(11)の段付凹部(15)に
保持された状態で得られる。第8工程としてシリンダ(
32)の伸長作動により押上板(33)を上昇させると
、該押上板(33)は前記金型(11)の下端開口(1
7)を経て内部の押出し板(19)を押上げ、これによ
り押出ビン(18)が金型(11)の段付凹部(15)
に保持された中子を該凹部(15)から押出す。
As a fifth step, the cylinder (14) is extended and the mold (11) is moved to just below the compression mold (37). Then, in the sixth stroke, when the cylinder (34) is extended and the compression mold (37) is lowered, the compression mold (37) is lowered.
) is slid and fitted into the upper recess of the mold (11),
The core preform held within the mold (11) is compressed. When the compression mold (37) is inserted to a predetermined depth, the outer circumference of the upper surface of the mold (11) comes into contact with the stopper (39), causing the cylinder (34) to expand and the compression mold (37) to extend.
) stops descending. As the seventh step, the cylinder (3
4) is retracted and the compression mold (37) is pulled up.
The compression mold (37) is separated from the mold (11), resulting in a core having the desired shape held in the stepped recess (15) of the mold (11). As the eighth step, the cylinder (
When the push-up plate (33) is raised by the extension operation of the mold (11), the push-up plate (33)
7) to push up the internal extrusion plate (19), which causes the extrusion bottle (18) to move into the stepped recess (15) of the mold (11).
The core held in is pushed out from the recess (15).

中子の取出し後、前記押上板(33)を下降させた上、
第9工程として前記シリンダ(14)の縮引作動により
前記金型(11)を前記テーブル(12)の真上位置ま
で復帰させる。なおこの間に前記ブロータンク(21)
内には次の吹込み用の生砂が投入されている。
After taking out the core, the push-up plate (33) is lowered, and
As a ninth step, the cylinder (14) is retracted to return the mold (11) to a position directly above the table (12). During this time, the blow tank (21)
Green sand for the next blowing process is being put inside.

以上の諸工程を1サイクルとして以後同じサイクルがく
り返され、これによって同一形状の生砂中子が連続して
造型されるものである。
The above steps are considered as one cycle, and the same cycle is repeated thereafter, whereby green sand cores of the same shape are successively molded.

(発明の効果) 以上の説明から明らかなように、本発明は中央部の厚み
が周辺部のそれよりも大きい生砂中子を造型するに当っ
て、第1段階として製品の最終形状よりも上下方向の寸
法が大きいキャビティを画成し、ここに生砂を吹込み充
填して予備成形体を造型し、第2段階として該予備成形
体を最終製品C中子)に圧縮成形するものであるが、本
発明のユニークな点は、前記予備成形体におけろ中央厚
肉部の拡大寸法が周辺薄肉部の拡大寸法よりも大きく、
かつ両波大寸法の比率が最終製品1乙おける中央厚肉部
と周辺薄肉部との寸法比率と等しくされていることであ
る。このような予備成形体を最終製品の形状に圧縮する
ことにより、中央厚肉部と周辺薄肉部の強度がほぼ均一
な中子を得ることができる。また予備成形体における中
央厚肉部の生砂がよく締まるため、この部分の転写性が
向上し、より寸法精度の良好な中子が得られろ。
(Effects of the Invention) As is clear from the above description, the present invention, when molding a green sand core in which the thickness of the central part is larger than that of the peripheral part, is performed as a first step to form a green sand core that is thicker than the final shape of the product. A cavity with large dimensions in the vertical direction is defined, green sand is blown and filled into the cavity to form a preform, and in the second step, the preform is compression molded into the final product (C core). However, the unique point of the present invention is that in the preform, the enlarged dimension of the central thick part is larger than the enlarged dimension of the peripheral thin part,
In addition, the ratio of both wave sizes is equal to the dimensional ratio of the central thick part and peripheral thin part in the final product 1B. By compressing such a preform into the shape of a final product, it is possible to obtain a core with substantially uniform strength in the central thick part and the peripheral thin part. In addition, since the green sand in the central thick part of the preform is well compacted, the transferability in this part is improved, and a core with better dimensional accuracy can be obtained.

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

第1図は本発明に係る生砂中子造型装置の要部切欠き正
面図、第2図は中子の予備成形体用キャビティと最終製
品用キャビティとの寸法比較図である。 (6)二ローラコンベヤ (11) :金型(12) 
:テーブル    (15) (24) (35) :
凹部(21) ニブロータンク  (25) (36)
 :キャビティ(26) :砂吹込み型   (27)
 :砂吹込み孔(37) :圧縮型 讐1図
FIG. 1 is a cutaway front view of essential parts of a green sand core molding apparatus according to the present invention, and FIG. 2 is a dimensional comparison diagram of a cavity for a preform of a core and a cavity for a final product. (6) Two-roller conveyor (11): Mold (12)
:Table (15) (24) (35) :
Recess (21) Niblow tank (25) (36)
: Cavity (26) : Sand blowing type (27)
: Sand injection hole (37) : Compression type 1 diagram

Claims (1)

【特許請求の範囲】[Claims] その上面側に凹部(15)を形成した金型(11)を搬
送手段(6)により横行自在に配設し、該金型(11)
の一方の移動端における停止位置の下方に、該金型(1
1)を載置して昇降可能なテーブル(12)を配設する
と共に、該テーブル(12)の上方にブロータンク(2
1)を配設し、該ブロータンク(21)の下端部に、そ
の下面中央部に所望中子の上面形状高さよりも深い凹部
(24)を形成すると共に該金型(11)の凹部(15
)に所定深さまで摺動して嵌入可能な砂吹込み型(26
)を固着し、該砂吹込み型(26)と前記ブロータンク
(21)の底板とを貫通して砂吹込み孔(27)を穿設
し、前記金型(11)の他方の移動端における停止位置
の上方に、その下面中央部に所望中子の上面形状と同形
状の凹部(35)を形成すると共に該金型(11)の凹
部(15)に所定深さまで摺動して嵌入可能な圧縮型(
37)を昇降可能に配設したことを特徴とする生砂中子
造型装置。
A mold (11) having a recess (15) formed on its upper surface side is disposed so as to be freely traverseable by a conveying means (6).
The mold (1
A table (12) on which a blow tank (1) is placed and which can be raised and lowered is provided, and a blow tank (2) is placed above the table (12).
1), and a recess (24) deeper than the height of the desired upper surface shape of the core is formed at the lower end of the blow tank (21) at the center of the lower surface thereof, and a recess (24) of the mold (11) is formed. 15
) can be slid to a specified depth and inserted into the sand blowing type (26
), a sand blowing hole (27) is bored through the sand blowing mold (26) and the bottom plate of the blow tank (21), and the other moving end of the mold (11) is fixed. A recess (35) having the same shape as the upper surface of the desired core is formed in the center of the lower surface above the stop position, and the core is slid into the recess (15) of the mold (11) to a predetermined depth. Possible compression types (
37) A green sand core molding device characterized by being arranged to be able to be raised and lowered.
JP61216568A 1986-09-12 1986-09-12 Green sand core molding device Granted JPS6372449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61216568A JPS6372449A (en) 1986-09-12 1986-09-12 Green sand core molding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61216568A JPS6372449A (en) 1986-09-12 1986-09-12 Green sand core molding device

Publications (2)

Publication Number Publication Date
JPS6372449A true JPS6372449A (en) 1988-04-02
JPH0527502B2 JPH0527502B2 (en) 1993-04-21

Family

ID=16690463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61216568A Granted JPS6372449A (en) 1986-09-12 1986-09-12 Green sand core molding device

Country Status (1)

Country Link
JP (1) JPS6372449A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263577A2 (en) * 1986-10-04 1988-04-13 Sintokogio Ltd. Method of and device for producing mold core
EP0811445A1 (en) * 1996-06-07 1997-12-10 Sintokogio, Ltd. Molding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263577A2 (en) * 1986-10-04 1988-04-13 Sintokogio Ltd. Method of and device for producing mold core
EP0811445A1 (en) * 1996-06-07 1997-12-10 Sintokogio, Ltd. Molding machine

Also Published As

Publication number Publication date
JPH0527502B2 (en) 1993-04-21

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