JPS5835781B2 - Dump box type molding equipment - Google Patents
Dump box type molding equipmentInfo
- Publication number
- JPS5835781B2 JPS5835781B2 JP16938381A JP16938381A JPS5835781B2 JP S5835781 B2 JPS5835781 B2 JP S5835781B2 JP 16938381 A JP16938381 A JP 16938381A JP 16938381 A JP16938381 A JP 16938381A JP S5835781 B2 JPS5835781 B2 JP S5835781B2
- Authority
- JP
- Japan
- Prior art keywords
- dump box
- sand
- protrusion
- mold
- box type
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C13/00—Moulding machines for making moulds or cores of particular shapes
- B22C13/08—Moulding machines for making moulds or cores of particular shapes for shell moulds or shell cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Description
【発明の詳細な説明】 本発明は、ダンプボックス式造型装置に関する。[Detailed description of the invention] The present invention relates to a dump box type molding device.
殊に、本発明は、造型されるシェル鋳型に凹みを形成す
るため原型に突起を設けたダンプボックス式造型装置に
関する。In particular, the present invention relates to a dump box type molding apparatus in which a protrusion is provided on a master mold to form a recess in a shell mold to be molded.
シェル鋳型を形成するためのダンプボックス式造型装置
は、原型とダンプボックスとからなり、加熱した原型上
に樹脂混合の砂を堆積させ、原型の熱で、原型表面近傍
の砂層内の樹脂を溶融させることにより、該原型表面の
まわりに所要厚さの粘結砂層を形成し、その後ダンプボ
ックスを反転させて未粘結の砂を原型から落下させるも
のである。A dump box type molding device for forming a shell mold consists of a master mold and a dump box. Sand mixed with resin is deposited on the heated master mold, and the heat of the master melts the resin in the sand layer near the surface of the master mold. By doing so, a layer of caking sand of a required thickness is formed around the surface of the model, and then the dump box is turned over to cause uncaked sand to fall from the model.
このような造型装置を用いて凹みを有するシェル鋳型を
形成する場合、原型にはシェル鋳型の凹みに相当する部
分に突起を設ける必要がある。When forming a shell mold having a recess using such a molding apparatus, it is necessary to provide a protrusion on the original mold in a portion corresponding to the recess of the shell mold.
このような突起を有する原型を用いる造型装置では、樹
脂を溶融させた後に、ダンプボックスを反転させたとき
、突起付近を落下する砂により、該突起まわりの粘結砂
層が削り取られてシェル鋳型の層厚が局部的に減少する
という問題がある。In a molding device that uses a master mold having such protrusions, when the dump box is turned over after melting the resin, the sand falling near the protrusions scrapes off the caking sand layer around the protrusions, causing the shell mold to become The problem is that the layer thickness is locally reduced.
本発明は、突起を有する原型を用いるダンプボックス式
造型装置における上述の問題を解決することを目的とす
るもので、その構成上の特徴は、ダンプボックスに、原
型の突起を所定間隙で取囲む囲みを設けたことにある。The present invention aims to solve the above-mentioned problem in a dump box type molding device using a master mold having a protrusion, and its structural feature is that the dump box surrounds the protrusion of the master mold with a predetermined gap. This is due to the fact that a fence was set up.
此処に、所定間隙とは、形成されるシェル鋳型の壁厚と
ほぼ同等、或いはそれより僅か大きい程度を意味し、こ
の囲みにより、原型の突起まわりのシェル鋳型層は、そ
のまわりの未粘結砂層から実質的に仕切られた状態にな
り、該突起まわりのシェル鋳型層を囲む砂の流れがほと
んど生じず、したがって、このシェル鋳型層が砂の流れ
により削り取られる不具合が防止される。Here, the predetermined gap means a wall thickness that is approximately equal to or slightly larger than the wall thickness of the shell mold to be formed, and this enclosure allows the shell mold layer around the protrusion of the original mold to form an uncaked layer around it. The shell mold layer is substantially separated from the sand layer, and there is almost no sand flow surrounding the shell mold layer around the protrusion, thus preventing the shell mold layer from being scraped away by the sand flow.
以下、本発明の一実施例を図について説明すると、造型
装置は、原型１と、後述するダンプボックスに取付られ
、該原型１の所要部分にのみ砂が堆積されるようにする
マスク２、及び原型１とマスク２とを囲むように設けら
れたダンプボックス３とからなり、ダンプボックス３に
はシャッタ４が出入自在に設けられている。Hereinafter, one embodiment of the present invention will be described with reference to the drawings. A molding apparatus includes a master mold 1, a mask 2 that is attached to a dump box (described later), and which allows sand to be deposited only on required parts of the master mold 1, and It consists of a dump box 3 provided so as to surround a prototype 1 and a mask 2, and a shutter 4 is provided in the dump box 3 so as to be freely accessible.
原型１には、突起１ａが形成されている。A protrusion 1a is formed on the prototype 1.
図に示すように、マスク２には支柱５により囲い６が支
持されている。As shown in the figure, a enclosure 6 is supported on the mask 2 by pillars 5.
囲い６は原型１の突起１ａを囲むように配置され、該囲
い６と突起１ａとの間の間隙は、形成されるシェル鋳型
の壁厚にほぼ等しくする。The enclosure 6 is arranged to surround the protrusion 1a of the master mold 1, and the gap between the enclosure 6 and the protrusion 1a is approximately equal to the wall thickness of the shell mold to be formed.
操作に際しては、まず、ダンプボックス３に結合剤とし
ての樹脂を含有する砂７を入れてシャッタ４を閉じ、次
に第１図のように、ダンプボックス３を反転して加熱し
た原型１に載せる。In operation, first, sand 7 containing resin as a binder is put into the dump box 3, the shutter 4 is closed, and then the dump box 3 is turned over and placed on the heated master mold 1, as shown in FIG. .
此処で、シャッタ４を引いて砂７を原型１上に落下させ
る（第２図）。At this point, the shutter 4 is pulled to allow the sand 7 to fall onto the master mold 1 (Figure 2).
砂７に混入された樹脂は原型１の熱により溶融して原型
１の表面のまわりにシェル鋳型層８を形成する。The resin mixed in the sand 7 is melted by the heat of the master mold 1 and forms a shell mold layer 8 around the surface of the master mold 1.
次いで、装置を第３図のように反転させると、未粘結の
砂が落下して、原型１のまわりにはシェル鋳型８のみが
残される。Next, when the apparatus is turned over as shown in FIG. 3, the uncaked sand falls and only the shell mold 8 remains around the master mold 1.
このとき、原型１の突起１ａのまわりには囲い６がある
ので、突起１ａのまわりのシェル鋳型層は、その周囲の
未粘結の砂から隔離されており、砂の流れによって突起
１ａのまわりのシェル鋳型層が削り取られることはない
。At this time, since there is an enclosure 6 around the protrusion 1a of the master mold 1, the shell mold layer around the protrusion 1a is isolated from the surrounding uncaked sand, and the sand flow surrounds the protrusion 1a. The shell mold layer is not scraped away.
なお、マスク２を使用しない場合には、囲い６を直接ダ
ンプボックス３に取付けても良い。Note that if the mask 2 is not used, the enclosure 6 may be attached directly to the dump box 3.
第１図は砂を落下させる前の本発明によるダンプボック
ス式造型装置の一例を示す垂直断面図、第２図は砂を落
下させた状態を示す同様な断面図、第３図はダンプボッ
クスを反転させた状態を示す垂直断面図、第４図はマス
ク及び囲いの斜視図である。
１・・・・・・原型、３・・・・・・ダンプボックス、
４・・・・・・シャッタ、６・・・・・・囲い、７・・
・・・・砂。Fig. 1 is a vertical sectional view showing an example of the dump box type molding apparatus according to the present invention before sand is dropped, Fig. 2 is a similar sectional view showing a state in which sand is dropped, and Fig. 3 is a vertical sectional view showing an example of the dump box molding device according to the present invention before sand is dropped. A vertical cross-sectional view showing the inverted state, and FIG. 4 is a perspective view of the mask and enclosure. 1... Prototype, 3... Dump box,
4...Shutter, 6...Enclosure, 7...
····sand.
Claims (1)
相当部分に凹みを有するシェル鋳型を形成するダンプボ
ックス式造型装置において、前記ダンプボックスには、
前記原型の前記突起を所定の間隙で取り囲む囲いを設け
たことを特徴とするダンプボックス式造型装置。1. In a dump box molding device that uses a master mold having a protrusion and a dump box to form a shell mold having a recess in a portion corresponding to the protrusion, the dump box includes:
A dump box type molding apparatus, characterized in that an enclosure is provided that surrounds the protrusion of the prototype with a predetermined gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16938381A JPS5835781B2 (en) | 1981-10-22 | 1981-10-22 | Dump box type molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16938381A JPS5835781B2 (en) | 1981-10-22 | 1981-10-22 | Dump box type molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5870941A JPS5870941A (en) | 1983-04-27 |
| JPS5835781B2 true JPS5835781B2 (en) | 1983-08-04 |
Family
ID=15885573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16938381A Expired JPS5835781B2 (en) | 1981-10-22 | 1981-10-22 | Dump box type molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835781B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252495A (en) * | 1985-05-01 | 1986-11-10 | Showa Alum Corp | Laterally laminated type heat exchanger |
| JPS61186997U (en) * | 1985-05-09 | 1986-11-21 | ||
| JPS61186988U (en) * | 1985-05-10 | 1986-11-21 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04122555U (en) * | 1991-04-24 | 1992-11-04 | 株式会社西務良 | tape dispenser |
-
1981
- 1981-10-22 JP JP16938381A patent/JPS5835781B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252495A (en) * | 1985-05-01 | 1986-11-10 | Showa Alum Corp | Laterally laminated type heat exchanger |
| JPS61186997U (en) * | 1985-05-09 | 1986-11-21 | ||
| JPS61186988U (en) * | 1985-05-10 | 1986-11-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5870941A (en) | 1983-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BR9606764A (en) | Method for building molds and fully dense metal parts | |
| JPS57120421A (en) | Manufacture of foamed product lined with core material | |
| PL202447A1 (en) | METHOD OF MAKING CASTING MOLDS FROM MOLDING SAND CONTAINING A BINDING AGENT AND DEVICE FOR THE MANUFACTURING OF MOLDING MOLDS FROM MOLDING SAND CONTAINING A BINDING AGENT | |
| JPS5835781B2 (en) | Dump box type molding equipment | |
| JPS5332823A (en) | Demoulding agent for cement sand casting mould | |
| JPS5597844A (en) | Forming method of cast-out hole | |
| JPS56109144A (en) | Pour-casting method | |
| JPS62220243A (en) | Method and device for manufacturing mold and dead head sleeve | |
| US4566518A (en) | Method of heat retention in a blind riser | |
| JPS558376A (en) | Continuous casting method of different kind of steel | |
| JPS58167052A (en) | Casting method | |
| JP2514533B2 (en) | Model coating layer forming device made of foamed synthetic resin. | |
| JPH0691346A (en) | Special core for casting | |
| JPS52125254A (en) | Manufacture for bent waveguide | |
| JP2516191B2 (en) | Demolding method for concrete products | |
| JPH0263636A (en) | Manufacture of lost foam pattern | |
| JPS5554256A (en) | Exciting device of mold | |
| JPS60180644A (en) | Bubble dispersing molding method and device using joined sand | |
| JPS586613Y2 (en) | Heat-retaining hot water pack | |
| JPS5564760A (en) | Method of making multilayered and viscous candy and mold used for making the same | |
| JPS56117872A (en) | Insert casting method by alloy powder | |
| JPH0214823Y2 (en) | ||
| JPS5659572A (en) | Molding method of core for centrifugal casting | |
| JPS5877740A (en) | Investment casting pattern | |
| JPH07314497A (en) | Two-layer molding method |