EP0100161A1 - Automatische Sandformmaschine - Google Patents

Automatische Sandformmaschine Download PDF

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Publication number
EP0100161A1
EP0100161A1 EP83303873A EP83303873A EP0100161A1 EP 0100161 A1 EP0100161 A1 EP 0100161A1 EP 83303873 A EP83303873 A EP 83303873A EP 83303873 A EP83303873 A EP 83303873A EP 0100161 A1 EP0100161 A1 EP 0100161A1
Authority
EP
European Patent Office
Prior art keywords
frame
box
compacting
moulding
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.)
Withdrawn
Application number
EP83303873A
Other languages
English (en)
French (fr)
Inventor
Agustin Arana Erana
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.)
Individual
Original Assignee
Individual
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
Priority claimed from ES513735A external-priority patent/ES8306621A1/es
Priority claimed from ES514782A external-priority patent/ES8406251A2/es
Priority claimed from ES523633A external-priority patent/ES8404625A2/es
Application filed by Individual filed Critical Individual
Publication of EP0100161A1 publication Critical patent/EP0100161A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing

Definitions

  • sand moulding in boxes is performed from a moulding box which is closed at the bottom with the model-holder plate; this box is filled with sand which requires suitable compacting, to acquire the necessary degree of consistency.
  • the sand loading hopper is displaced from the working vertical where the compacting takes place of the sand contained in the moulding box, which leads to the aforesaid moulding box having an alternating horizontal movement, to place it under the hopper, to load the sand and then to place itself in the working vertical where the compacting has to be performed.
  • Sand box moulding machines are also known, in which the sand fills the moulding box, simply falling by gravity and subsequently the final compacting takes place by means of an expan sive wave provoked by the explosion of an inflammable gas in an enclosure provided for this purpose, suitably reinforced and communicated with the moulding box. Obviously, this system calls for very special and rugged installations, to avoid and neutralize the inherent hazards of explosions.
  • the aims of the present invention are basically as follows :
  • this invention is based on the fact that the sand falls from the hopper by the force of gravity and then the compacting process is developed in two asynchronous or simultaneous stages, with the intervention of a series of basic elements included in the improvements which constitute the object of the present invention.
  • the final compacting of the sand is performed by the action of elastic means, like a flexible chamber, acting as a countermould.
  • a compressed air injecting unit which can be linked directly or indirectly to the tank, containing the air; this tank is arranged like a casing around the hopper, which is mounted in coaxial alignment with the basic elements and the general framework of the machine.
  • the indirect relationship between the tank and the injector unit is determined through a telescopic connection.
  • the compressed air injector unit can comprise a single-block body with a rack-bracket which forms the flexible chamber acting as a countermould.
  • the automatic moulding machine is made up from a general framework 1 on which a sand feeding hopper 2 is arranged in coaxial alignment.
  • the sand can fall by the force of gravity, after a gate 20 ( Figure 6) as been withdrawn by a cylinder 21, on an assembly formed by a frame 3 and a moulding box 4, which both correspond perimetrically.
  • the frame 3 is supported by conventional rests, while the box 4 rests on conveyor rollers 5 under whose level a model-holder plate 6 is arranged at rest.
  • the plate 6 is supported on a rack 7 through which an hydraulic cylinder 8 projects.
  • the cylinder is provided with a platform 9 on which the plate 6 can rest when the cylinder 8 is driven, its plunger 15 (Figs. 2 and 3) pushing it upwards, to force the box 4 in turn and the frame 3 until the assembly touches the top part of the framework 1 (Fig.2).
  • a rack-support 11 is shown in Figs 2 and 3, the rack-support being provided with a flexible chamber, like a countermould, which is full of fluid 12 , preferably liquid, this chamber being formed by a rubber type casing.
  • the rack 11 can be placed inside or outside the framework 1.
  • the hopper 2 is surrounded over part of its height by a compressed air tank 13, provided with a valve 14 through which the air passes directly into an injector unit 10, to perform the first compacting of the sand (Fig.2), subsequently discharging the surplus air through a valve 16.
  • the countermould 11 is inserted between the frame 3 and the box 4 so that through the upward thrust of the plunger 15 the whole assembly presses against the top part of the framework, to cause the countermould 11 to press against the sand in the box 4, thus performing the final constant compacting.
  • FIG. 6 an embodiment is shown in which there is a connection between the compressed air tank 13 and the frame 3, comprising telescopic members 17, the lower one of which is jointed to the side of the frame by the shape of an injection chamber 19, encasing the frame, through which chamber compressed air passes from the tank 13 through a valve 18 to reach the inside of the frame, to perform the first compacting stage, (Fig.7), the latter being closed by the countermould 11 and being ready to perform the final compacting (Fig.8), once the surplus air has been ejected by the valve 16 (Fig.9).
  • This frame 3 is provided with lugs 23 (Fig.10) with respective holes 24 as means for guiding the former through vertical columns of the framework 1.
  • a single-block body 25 has an injection chamber in its upper portion, and at its lower portion forms a rack-bracket 26 suitable for housing a plurality of hydraulic cylinders 27 acting as a countermould, with their pistons preferably protruding from the said rack-support, which is intercommunicated with the injection chamber through the holes 28, making a quick airtight join between the single-block body and the tank 13 through the telescopic connection 17, with its respective inlets 29 fitting into each other, to allow the flow of compressed air for the first compacting, which can be performed simultaneously with the final compacting, because of the air reaching the cylinders 27 of the rack 26 (Figs 12 and 13).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
EP83303873A 1982-07-05 1983-07-04 Automatische Sandformmaschine Withdrawn EP0100161A1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
ES513735 1982-07-05
ES513735A ES8306621A1 (es) 1982-07-05 1982-07-05 Mejoras introducidas en las maquinas automaticas de moldeo en cajas de arena.
ES514782 1982-08-05
ES514782A ES8406251A2 (es) 1982-08-05 1982-08-05 Mejoras en los sistemas automaticos de moldeo de cajas de arenas
ES523633A ES8404625A2 (es) 1983-06-28 1983-06-28 Perfeccionamientos introducidos en el objeto de la patente principal n 513.735 por mejoras introducidas en las maquinas automaticas de moldeo en cajas de arena.
ES523633 1983-06-28

Publications (1)

Publication Number Publication Date
EP0100161A1 true EP0100161A1 (de) 1984-02-08

Family

ID=27240790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83303873A Withdrawn EP0100161A1 (de) 1982-07-05 1983-07-04 Automatische Sandformmaschine

Country Status (1)

Country Link
EP (1) EP0100161A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198980A (en) * 1986-12-17 1988-06-29 Fischer Ag Georg Process for compressing granular moulding materials
CN103128234A (zh) * 2013-02-28 2013-06-05 辉煌水暖集团有限公司 自动送砂的射芯机系统
CN109530613A (zh) * 2018-12-05 2019-03-29 常州好迪机械有限公司 一种混砂装置
CN113210575A (zh) * 2021-04-15 2021-08-06 杨合军 一种在砂型内安置龙骨架的制作工艺
CN116618587A (zh) * 2023-07-24 2023-08-22 垣曲县晋锋机械铸造有限公司 一种消失模铸造装置
CN117226051A (zh) * 2023-11-15 2023-12-15 山西汉通鑫宇科技股份有限公司 一种铸造用智能砂箱

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248238B (de) * 1958-07-09 1967-08-24 Osborn Mfg Co Pressformmaschine und Verfahren zum Betrieb einer solchen
DE2842912A1 (de) * 1978-10-02 1980-04-10 Wagner & Co Alfelder Masch Verfahren und vorrichtung zum herstellen von sandgiessformen o.dgl.
DE2930874A1 (de) * 1979-03-08 1980-09-11 Sintokogio Ltd Formvorrichtung
DE3002702A1 (de) * 1980-01-25 1981-07-30 Alfelder Maschinen- und Modell-Fabrik Künkel, Wagner & Co KG, 3220 Alfeld Vorrichtung an sandformmaschinen zum zufuehren des formsandes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248238B (de) * 1958-07-09 1967-08-24 Osborn Mfg Co Pressformmaschine und Verfahren zum Betrieb einer solchen
DE2842912A1 (de) * 1978-10-02 1980-04-10 Wagner & Co Alfelder Masch Verfahren und vorrichtung zum herstellen von sandgiessformen o.dgl.
DE2930874A1 (de) * 1979-03-08 1980-09-11 Sintokogio Ltd Formvorrichtung
DE3002702A1 (de) * 1980-01-25 1981-07-30 Alfelder Maschinen- und Modell-Fabrik Künkel, Wagner & Co KG, 3220 Alfeld Vorrichtung an sandformmaschinen zum zufuehren des formsandes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198980A (en) * 1986-12-17 1988-06-29 Fischer Ag Georg Process for compressing granular moulding materials
GB2198980B (en) * 1986-12-17 1991-03-27 Fischer Ag Georg Process for compressing granular moulding materials
CN103128234A (zh) * 2013-02-28 2013-06-05 辉煌水暖集团有限公司 自动送砂的射芯机系统
CN103128234B (zh) * 2013-02-28 2016-04-20 辉煌水暖集团有限公司 自动送砂的射芯机系统
CN109530613A (zh) * 2018-12-05 2019-03-29 常州好迪机械有限公司 一种混砂装置
CN109530613B (zh) * 2018-12-05 2023-09-19 常州好迪机械有限公司 一种混砂装置使用方法
CN113210575A (zh) * 2021-04-15 2021-08-06 杨合军 一种在砂型内安置龙骨架的制作工艺
CN116618587A (zh) * 2023-07-24 2023-08-22 垣曲县晋锋机械铸造有限公司 一种消失模铸造装置
CN116618587B (zh) * 2023-07-24 2023-09-22 垣曲县晋锋机械铸造有限公司 一种消失模铸造装置
CN117226051A (zh) * 2023-11-15 2023-12-15 山西汉通鑫宇科技股份有限公司 一种铸造用智能砂箱
CN117226051B (zh) * 2023-11-15 2024-01-30 山西汉通鑫宇科技股份有限公司 一种铸造用智能砂箱

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Effective date: 19840625

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18D Application deemed to be withdrawn

Effective date: 19860117