KR800000666B1 - Method of making a sand mould - Google Patents

Method of making a sand mould Download PDF

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Publication number
KR800000666B1
KR800000666B1 KR760000193A KR760000193A KR800000666B1 KR 800000666 B1 KR800000666 B1 KR 800000666B1 KR 760000193 A KR760000193 A KR 760000193A KR 760000193 A KR760000193 A KR 760000193A KR 800000666 B1 KR800000666 B1 KR 800000666B1
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South Korea
Prior art keywords
core
mold
molding
making
casting
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KR760000193A
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Korean (ko)
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요시노부 오하시
시스오 이노우에
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히로 게이다로오
구보다 덱고오 가부시기가이샤
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Priority to KR760000193A priority Critical patent/KR800000666B1/en
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Publication of KR800000666B1 publication Critical patent/KR800000666B1/en

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Abstract

A method of making a sand mold having a part molding cavity and a core for casting an annular part between the portion defining the part molding cavity and the core, comprises placing a sufficient amt. of the mixt. in a mold jacket to fill the mold jacket, pressing and forming the mixt. in mold jacket into a block, bringing into contact with the portion of the surface the cutter to cut the block, applying a coating of a part agent to the exposed surface of the core molding cavity, removing the core member from the core making cavity and placing the core member in the part molking cavity as at least part of the core for the annular part prior to casting the annular part.

Description

코어(core) 및 주형(主型)의 조형방법Core and Mold Molding Method

도면은 본 발명에 관계되는 조형공정 순서를 표시하는 공정도.The process figure which shows the shaping | molding process sequence which concerns on this invention.

본 발명은 관(管)등의 주조에 사용하는 코어 및 주형(主型)의 조형 방법에 관한 것이다.TECHNICAL FIELD This invention relates to the core and casting method for shaping | molding used for casting of a pipe | tube.

종래 이와 같은 코어의 조형과 주형의 조형은 각각 다른 공정설계로서 행하여지기 때문에 조형비가 많이 들게 되고, 설비상의 관점에서도 비경제적이며, 또한 조형작업 및 운전작업에서 불합리한면이 있다.Since the molding of the core and the molding of such a mold are performed in different process designs, the molding cost is high, and it is uneconomical in terms of equipment, and there is an unreasonable aspect in the molding work and the operation work.

본 발명은 상기한 문제점을 해결하는 것으로서 코어 조형, 주형조형을 모두 공통의 일련 공정설계로 행하여 얻는 것에 의해 코어, 주형 조형작업의 합리화, 코어 조형비의 절감, 코어조형 시간의 단축을 도모할 수 있는 조형방법을 제공하는데 있으며, 따라서 그 특징은 주조품의 두께분만큼 작은 지름의 주형을 절삭조형 하는 공정과, 그 주형에 이형제(離型劑)를 도포하는 공정과, 이형제 도포 후의 주형에 코어용의 모래를 충전하여 고화(固化)하는 공정과, 고화후의 코어를 주형에서 추출하는 공정과, 코어 추출후에 주형을 전기한 주조품의 두께분만큼 재차 절삭해서 주형을 완성하는 공정으로 이루어진 것에 있다.SUMMARY OF THE INVENTION The present invention solves the above problems, and by achieving both core molding and mold molding by a common serial process design, it is possible to rationalize the core, mold molding work, reduce core molding cost, and shorten core molding time. The present invention provides a molding method, which is characterized by cutting a mold having a diameter as small as the thickness of a cast product, applying a mold release agent to the mold, and applying the mold to the mold after the mold release agent is applied. A process of filling the sand to solidify, extracting the core after the solidification from the mold, and cutting the mold again by the thickness of the cast product in which the mold is delivered after core extraction.

이하 본 발명을 첨부된 도면에 따라 실시예로서 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

우선 주형용의 모래(1)를 틀(2)에 넣고, 이것을 손이나 또는 기계로 잘 다져서 압축사(3)로 만든다.First, the sand for casting (1) is put into the mold (2), and it is compacted by hand or a machine to make a compressed yarn (3).

이 압축사(3)를 절사칼(4)로서 절삭하여 주조하고자하는 관의 두께분만큼 작은 지름의 주형(5)을 만든다. 다음에 이 주형(5)에 이형제를 분무기(9) 등의 수단으로 도포한다.The compressed yarn 3 is cut as a cutting knife 4 to form a mold 5 having a diameter as small as the thickness of the pipe to be cast. Next, the mold release agent is applied to the mold 5 by means such as a spray gun 9.

이형제 도포후에 주형(5) 속으로 코어용모래(6)를 충전하여 고화시키며 이 경우, 코어용모래(6)를 자경성사(自硬性砂)로 사용하거나 또는 코어용 모래(6)에 스퀴즈-헤드(squeese-Head)를 압축공기 피스톤의 작용으로 눌러 붙여서 코어용모래(6)를 다져넣는 고압조형방법을 사용하는 것은 임의로 할 수 있다.After the release agent is applied, the core sand 6 is filled into the mold 5 and solidified. In this case, the core sand 6 is used as a hard-hard sand or a squeeze on the core sand 6. Using a high pressure molding method in which the head (squeese-Head) is pressed by the action of the compressed air piston to chop the core sand (6) can be arbitrarily used.

이와 같이 조형된 코어(7)를 주형(5)에서 추출하고, 마지막으로 코어가 추출된 후의 주형(5)을 주조하고자 하는 관의 두께분만큼 재차 절삭칼(4)로서 절삭가공하여 주형(8)을 완성한다. 이렇게 하여 얻어진 분할형 코어(7), 주형(8)을 두개씩 합쳐서 일체화하여 소정의 주형이 얻어지는 것이다.The core 7 thus formed is extracted from the mold 5, and finally, the mold 5 after the core is extracted is cut and processed again with the cutting knife 4 by the thickness of the tube to be cast, and the mold 8 To complete). The divided core 7 and the mold 8 obtained in this way are combined together so that a predetermined mold is obtained.

본 발명의 방법에 의하면 상기한 조형공정 순서의 설명에서 밝혀진바와 같이 코어조형, 주형조형은 공통의 틀(2)을 사용하고, 공통의 일련공정으로 행하여지는 것이므로 코어 주형의 제조작업 및 운반작업을 철저하게 합리화할 수 있을 뿐더러 더우기 코어(7)의 모형 대신에 관 등의 주조품의 두께분만큼 지름이 작은 주형(5)을 쓰는 것에 의해 코어모형이 생략되고 또한 코어 조형의 수공은 주형의 제조와는 별도의 공정으로 행해지던 종래의 코어 조형수공에 비해 현저하게 감소되어 조형시간도 단축되며 코어 조형비를 절감할 수 있다는 효과도 볼 수 있다.According to the method of the present invention, as shown in the description of the molding process sequence described above, the core molding and the mold molding are performed using a common frame (2), and are performed in a common serial process. In addition, the core model is omitted by using a mold 5 whose diameter is as small as the thickness of the casting such as a tube instead of the model of the core 7. Compared to the conventional core molding work that was performed in a separate process is significantly reduced, the molding time is also shortened and the core molding cost can be reduced.

Claims (1)

주조품의 두께만큼 지름이 작은 주형을 절삭 조형하는 공정과 그 주형에 이형제를 도포하는 공정과 이형제 도포후의 주형에 코어용 모래를 충전하여 고화하는 공정과 고화후의 코어를 주형에서 추출하는 공정과 코어 추출후에 주형을 전기한 주조품의 두께분만큼 재차 절삭하여 주형을 완성하는 공정으로 이루어져서 코어와 주형을 일련 공정으로 얻을 수 있는 것을 특징으로 하는 코어 및 주형의 조형방법.The process of cutting and molding molds with a diameter as small as the thickness of the cast product, the process of applying a mold release agent to the mold, the process of filling the mold sand after the mold release agent application and solidifying the core, the process of extracting the core after solidification from the mold, and core extraction. A process of forming a core and a mold, wherein the core and the mold can be obtained in a series of steps, by forming a mold by cutting the mold again by the thickness of the cast article after the casting.
KR760000193A 1976-01-23 1976-01-23 Method of making a sand mould KR800000666B1 (en)

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KR760000193A KR800000666B1 (en) 1976-01-23 1976-01-23 Method of making a sand mould

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KR760000193A KR800000666B1 (en) 1976-01-23 1976-01-23 Method of making a sand mould

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KR800000666B1 true KR800000666B1 (en) 1980-07-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101696614B1 (en) * 2015-09-09 2017-01-18 삼영엔지니어링(주) Sand mold manufacturing apparatus without upper mold and the sand mold manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101696614B1 (en) * 2015-09-09 2017-01-18 삼영엔지니어링(주) Sand mold manufacturing apparatus without upper mold and the sand mold manufacturing method

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