EP0844037A1 - Vorrichtung und Verfahren zum Verspannen von Ober- und Unterkasten - Google Patents

Vorrichtung und Verfahren zum Verspannen von Ober- und Unterkasten Download PDF

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Publication number
EP0844037A1
EP0844037A1 EP97120488A EP97120488A EP0844037A1 EP 0844037 A1 EP0844037 A1 EP 0844037A1 EP 97120488 A EP97120488 A EP 97120488A EP 97120488 A EP97120488 A EP 97120488A EP 0844037 A1 EP0844037 A1 EP 0844037A1
Authority
EP
European Patent Office
Prior art keywords
cope
drag
engaging
grid frame
flask
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Withdrawn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
EP97120488A
Other languages
English (en)
French (fr)
Inventor
Masamoto Naito
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
Publication of EP0844037A1 publication Critical patent/EP0844037A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/12—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/08—Clamping equipment

Definitions

  • This invention relates to an apparatus and method for clamping a cope and a drag to prevent the cope from floating in molten metal when it is poured in the mold space formed by the cope and drag and to prevent their deformation due to the expansion of the molten metal when it solidifies.
  • a weight In the first process a weight must be notched or formed with an opening for a sprue. Thus it cannot be used for copes that have respective sprues located at different parts. Further, the process limits the methods of molding. Still further, since the process makes the weight unbalanced, the weight may float at one side. When a heavy weight is used, it causes a push up in a mold (cope or drag). Thus a weight which weighs less than is required is used. As a result, floating of a cope or deformation of a mold occurs.
  • the purpose of this invention is to provide an apparatus and a method for clamping a cope and a drag to allow a sprue to be formed at a desired part and to prevent the cope from floating in molten metal.
  • the method of the present invention for clamping a cope and a drag includes the steps of placing a cope on a drag, covering the top of the cope by a grid frame extending in a horizontal plane, the grid frame having a plurality of openings formed by the grid and having connecting means, and connecting the cope and drag by engaging the connecting means with engaging means which are mounted at the drag side.
  • the apparatus of the present invention for clamping a cope and a drag includes a grid flame extending in a horizontal plane.
  • the grid frame has a plurality of openings formed therein by the grid. A sprue leading to a cope may be located at any desired opening.
  • the grid frame also has connecting means at opposing sides thereof.
  • the connecting means engage with engaging means mounted on the drag side.
  • the engaging means may be mounted on opposing sides of a flask in which a drag is formed or on a plate or floor which supports the drag.
  • the engaging means may be pins, while the connecting means may be members pivotally mounted on the grid frame and having hook portions at the lower end thereof for engaging with the pins.
  • Fig. 1 is a plan view of the apparatus of an embodiment of this invention. (In the drawing, a mold and mold-associated members are shown by imaginary lines.)
  • Fig. 2 is a side view of the apparatus shown in Fig. 1.
  • Fig. 3 is a side view taken along line III - III in Fig. 1 to explain the first embodiment of the method of the invention. (In the drawing, molds and mold-associated members are shown in actual lines.)
  • Fig. 4 is a side view of the apparatus, molds, and mold-asssociated members to explain a second embodiment of the method of this invention.
  • FIGs. 1 and 2 an apparatus 10 of this invention for clamping a cope and a drag is shown.
  • the apparatus 10 has a grid frame 4 comprised of an outer frame 1 in the shape of a window frame and a cruciform member 2 securely attached to the outer frame 1.
  • the outer frame 1 and cruciform member 2 define a plurality of openings 3 in the grid frame 4.
  • a pair of connecting members 5, 5 are pivotally suspended from opposing sides of the grid frame 4 such that they rotate about pivots 6, 6 in the directions shown by the double arrow.
  • FIG. 3 a first embodiment of the method of the invention for clamping a cope 8 and a drag 7 is now explained.
  • a lower flask 20, which contains the drag 7, is placed on a floor or a plate 18.
  • An upper flask 23, which contains the cope 8, is placed on the lower flask 20 so that the cope 8 mates the drag 7.
  • the apparatus 10, shown in Figs. 1 and 2 is then put on the upper flask 23 so that the grid frame 4 covers the top of the cope 8, which is contained in the upper flask 23.
  • the top of the cope 8 Before the top of the cope 8 is covered with the grid frame 4, its level is higher (by about 3 mm) than the top of the upper flask 23.
  • the top becomes level with the top of the upper flask 23.
  • Both the upper and lower flasks 23, 20 are made of cast iron, and both are integrally formed with respective ribs 21, which run horizontally around the flask walls.
  • the upper and lower flasks 23, 20 may be connected by connecting their ribs 21, 21 by clamps in a conventional way.
  • Engaging members or horizontally extending pins or protuberances 22, 22 are formed at the drag side, e.g., in the embodiment shown in the drawing, on the rib 21 of the lower flask 20 at its opposing sides (only one pin 22 is shown).
  • the horizontal pins 22, 22 may be mounted on the floor or plate 18 through upright members (not shown).
  • the connecting members 5, 5 are pushed, for example, by a pusher (not shown), so that they engage with the pins 22, 22. Thus the cope and drag are connected.
  • a sprue is selectively formed at a desired position 15 or 15A of the cope that is located at one opening. Further, when the cope floats or deforms, its top is held down by the grid frame 4, and therefore the floating or deformation is prevented.
  • the engaging members 5, 5 are mounted on the frame 4 through pivots 6, 6.
  • the engaging members 5, 5 may be separated from the pivots 6, 6 or grid frame 4, and they may be engaged with both the pivots 6, 6 and pins 22, 22 to engage the cope with the drag.
  • a second embodiment of the method of the invention is carried out by using the apparatus 10.
  • the drag 12 is placed on a plate 11, which has engaging members or pins 11A.
  • the cope 13 is placed on the drag 12 to mate it.
  • a jacket 14 is then put on the sides of the cope and the drag.
  • the jacket 14 prevents them from causing each other to shift.
  • the jacket may be eliminated when such shifting cannot occur.
  • the apparatus 10 i.e., the grid frame 4
  • the connecting members 5, 5 are then moved to engage with the pins 11A.
  • the cope 13 and drag 12 are connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
EP97120488A 1996-11-22 1997-11-21 Vorrichtung und Verfahren zum Verspannen von Ober- und Unterkasten Withdrawn EP0844037A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP327703/96 1996-11-22
JP32770396A JPH10156487A (ja) 1996-11-22 1996-11-22 上下鋳型のクランプ方法及びその装置

Publications (1)

Publication Number Publication Date
EP0844037A1 true EP0844037A1 (de) 1998-05-27

Family

ID=18202045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120488A Withdrawn EP0844037A1 (de) 1996-11-22 1997-11-21 Vorrichtung und Verfahren zum Verspannen von Ober- und Unterkasten

Country Status (2)

Country Link
EP (1) EP0844037A1 (de)
JP (1) JPH10156487A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109093076A (zh) * 2018-09-30 2018-12-28 广西玉柴机器股份有限公司 一种砂芯组的锁紧方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105728666A (zh) * 2016-04-28 2016-07-06 江苏锡华铸造有限公司 一种带便捷锁箱工具的砂箱
CN105855482A (zh) * 2016-05-18 2016-08-17 芜湖市和蓄机械股份有限公司 一种简易砂箱锁紧装置及其应用
CN107282898A (zh) * 2017-05-25 2017-10-24 南通宏德机电有限公司 一种铸造砂箱紧固用双u型卡子的使用方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815859A (en) * 1956-04-25 1959-07-01 Tiroler Roehren & Metallwerk Device for clamping flask sections together in foundry plants
DE1174944B (de) * 1957-11-05 1964-07-30 Buderus Eisenwerk Einrichtung zum maschinellen Verklammern und Entklammern von Ober- und Unterform-kaesten bei Giessereitransportbahnen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815859A (en) * 1956-04-25 1959-07-01 Tiroler Roehren & Metallwerk Device for clamping flask sections together in foundry plants
DE1174944B (de) * 1957-11-05 1964-07-30 Buderus Eisenwerk Einrichtung zum maschinellen Verklammern und Entklammern von Ober- und Unterform-kaesten bei Giessereitransportbahnen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109093076A (zh) * 2018-09-30 2018-12-28 广西玉柴机器股份有限公司 一种砂芯组的锁紧方法

Also Published As

Publication number Publication date
JPH10156487A (ja) 1998-06-16

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