EP0357871A2 - Machine à mouler - Google Patents

Machine à mouler Download PDF

Info

Publication number
EP0357871A2
EP0357871A2 EP89108368A EP89108368A EP0357871A2 EP 0357871 A2 EP0357871 A2 EP 0357871A2 EP 89108368 A EP89108368 A EP 89108368A EP 89108368 A EP89108368 A EP 89108368A EP 0357871 A2 EP0357871 A2 EP 0357871A2
Authority
EP
European Patent Office
Prior art keywords
molding machine
machine according
lifting
stand
piston
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
EP89108368A
Other languages
German (de)
English (en)
Other versions
EP0357871B1 (fr
EP0357871A3 (fr
Inventor
Herbert Dipl.-Ing. Grolla
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.)
Heinrich Wagner Sinto Maschinenfabrik GmbH
Original Assignee
Heinrich Wagner Sinto Maschinenfabrik GmbH
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 Heinrich Wagner Sinto Maschinenfabrik GmbH filed Critical Heinrich Wagner Sinto Maschinenfabrik GmbH
Publication of EP0357871A2 publication Critical patent/EP0357871A2/fr
Publication of EP0357871A3 publication Critical patent/EP0357871A3/fr
Application granted granted Critical
Publication of EP0357871B1 publication Critical patent/EP0357871B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02—Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04—Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier

Definitions

  • the invention relates to a molding machine with a stand, a compression device and at least one lifting device.
  • the work steps required to produce a mold include placing a molding box on a model plate and placing a sand filling frame on the molding box. These two operations are usually carried out by hand. Subsequently, sand is filled into the molding box through the filling frame, this usually being done by means of a manually operated conveyor. After sufficient sand filling, the sand is pre-compacted in the mold, usually using vibrators. After swiveling in a counterpressure plate, the molding sand is post-processed in a pressing process seals.
  • the known molding machines also prove to be disadvantageous with regard to the compression methods used, since, in particular in the case of smaller molding machines, the mold is precompressed by shaking, which on the one hand leads to high noise emissions and on the other hand to high wear on both the molding machines and the molding boxes and Models leads.
  • the invention has for its object to provide a molding machine of the type mentioned, which allows a rational and time-saving manufacture of a castable mold with a simple structure and simple, reliable handling.
  • a rotating table unit comprising at least two tables is mounted on the stand, which has an ab in the area of each table has lifting device, and that the compression device is formed on the stand.
  • the molding machine according to the invention is characterized by a number of considerable advantages.
  • the rotary table unit comprising several tables makes it possible to carry out predetermined work steps independently of one another on each of the tables. For example, the molding sand can be compacted on one of the tables, while molding sand is filled in on the other table or a finished mold is lifted off.
  • two tables it is also possible to produce an upper box shape or a lower box shape on each table, so that a complete castable mold can be produced on a molding machine.
  • Another advantage of the molding machine according to the invention is that the operator can carry out his work without any time interruption, since, in contrast to the molding machines known from the prior art, the further work processes can be carried out on the other table during the sealing process.
  • Another advantage of the molding machine according to the invention results from the fact that it is independent of the method used to compact the molding sand or molding material is, so that it is possible to compact the molding sand in a conventional manner by shaking, as well as by means of an air flow press molding process.
  • the turntable unit comprises a support device for a molding box in the area of the tables.
  • the support device transfers the forces applied when compacting the molding sand or molding material directly to the stand; the turntable unit itself is not loaded. This leads to the possibility of dimensioning the turntable unit much smaller.
  • the support unit preferably has a support piston, which is mounted below the table and can be brought into abutment against the stand, and a lifting piston which moves the table against the compression device arranged in the upper region of the stand.
  • the compression process thus includes both supporting the molding box or the table on the stand and lifting the molding box or the table against the compression device arranged in the upper region of the stand.
  • This configuration enables, in addition to the already mentioned support, which avoids the application of force to the turntable unit, a space-saving configuration of the molding machine and, in particular in the area in which the table or the turntable unit is pivoted relative to the stand, to provide sufficient free space.
  • by lifting the table it is not necessary to lower the compression device itself or to approach the molding box. Rather, the compression device can be attached essentially stationary to the upper area of the stand.
  • the support piston comprises a tubular, movable to the table lifting cylinder, in which the piston, which is designed in the form of a double-acting piston, arranged is, wherein the piston rod of the reciprocating piston is connected to the table.
  • the piston which is designed in the form of a double-acting piston, arranged is, wherein the piston rod of the reciprocating piston is connected to the table.
  • the table is connected to a table guide rod which can be displaced in a recess in the rotary table unit.
  • the lifting device is preferably designed such that a lifting cylinder is mounted on the turntable unit in the region of the table, the piston rod of which is connected to lifting pins by means of a lifting cross-piece connected to this.
  • a lifting cylinder is mounted on the turntable unit in the region of the table, the piston rod of which is connected to lifting pins by means of a lifting cross-piece connected to this.
  • Lifting guide rods are preferably mounted on the lifting crossmember, at the free ends of which a carrier is fastened, which carries the lifting pin.
  • the stand in the region of the working position of the table assigned to the compacting device comprises a support device for a molding box.
  • the turntable unit is interposed, or independently of it, with appropriate support of the table.
  • the support device comprises at least one piston mounted on the stand, the piston rod of which can be brought into contact with the table.
  • a movable table guide rod which can be connected to the table and the piston rod, is mounted on the rotary table unit.
  • the invention provides that the reciprocating piston can be coupled to the table. This can be done in that the piston rod is provided at its upper end with a coupling body which can be brought into engagement with the table guide rod.
  • a lifting device is arranged on a working position of the table assigned to the filling side of the frame.
  • this can be designed in such a way that a universally displaceable piston rod is provided which can be coupled to a lifting traverse which is displaceably mounted on the turntable unit and at the free ends of which a carrier is fastened which carries a lifting pin.
  • the upper end of the piston rod has a coupling body which can be brought into engagement with the lifting traverse.
  • the coupling body can be positively inserted into a groove in the lifting crossmember or the table guide rod is.
  • the coupling body can be designed, for example, in the form of a thickened extension, which can be introduced into a dovetail-shaped or U-shaped groove.
  • the stand is essentially C-shaped in the side view.
  • the turntable unit can be pivoted about a vertical axis, the pivot axis being arranged on the outer region of the C-shaped stand, so that in each case one table of the turntable unit can be pivoted into the free space of the stand.
  • both a compact design of the molding machine is possible, as is a construction of particular strength, since the C-shaped stand is additionally supported via the vertical axis of the turntable unit.
  • a filling station, a lifting station and / or an auxiliary compaction station can also be arranged on the outer area of the stand in order to place a new molding box on the table, which is not under the compacting device arranged on the stand, to place a new molding box on this, a filling frame to arrange, add sand and pre-compact.
  • the compression device is designed such that it comprises a press plate which is arranged displaceably in the interior of a press box which can be pressurized with compressed air. It is thus possible to use an airflow press molding method in which the molding box does not have to be shaken.
  • the press plate is connected to a double-acting plunger and a guide rod guided in the stand. This embodiment ensures both exact guidance of the press plate and simple hydraulic controllability.
  • the molding machine according to the invention has a stand 1 which has a substantially C-shaped cross section in the side view.
  • the free ends of the C-shaped stand 1 are connected via a vertical axis 35 which is fixedly mounted on the stand 1 and which carries a turntable unit 3 which can be pivoted about the axis 36.
  • the turntable unit 3 has two tables 9, which are each mounted on the top of the turntable unit 3.
  • a model plate 22 can be placed on each of the tables 9, which is provided in the usual way with a model 23. As shown in FIG. 1, a molding box 24, which forms a molding cavity 27, can be placed on the model plate 22. A filling frame 25 is usually placed on the molding box 24, which facilitates the filling of the molding sand.
  • a lifting and supporting device is arranged on the turntable unit 3 below the table 9.
  • This comprises a reciprocating piston 12 which is connected to a piston rod 11, which in turn is attached to the table 9.
  • the lifting piston 12 is designed in the form of a double-acting piston and can be moved in a lifting cylinder 10, the lower region of which has a supporting piston 13.
  • the supporting piston 13 of the lifting cylinder 10 which is mounted on the rotary table unit 3 and is displaceable relative to it, is first moved downwards until it is in contact with a supporting plate 26 of the stand 1.
  • this pressurization causes the reciprocating piston 12 and thus also the table 9 to be moved upward, so that the filling frame 25 is pressed against a compression device which is formed on the upper region of the stand 1.
  • the compression device is described in detail below.
  • the table 9 In order to prevent the table 9 from rotating, it has at least one table guide rod 14 which can be displaced in a recess in the rotary table unit 3.
  • the compression device comprises a press box 15, which is provided with a recess in which a press plate 16 is arranged.
  • the recess of the press box 15 is adapted to the size of the filling frame 25 or the molding box 24.
  • a press frame 20 can also be arranged on the underside of the press box, as shown in FIG. 1.
  • the bottom of the press frame 20 is with provided with a press seal 21, which ensures an airtight seal when the filling frame 25 bears against the press frame 20.
  • the press frame 15 is fixedly connected to the stand 1 and has an air inlet 19 through which compressed air can be pressed into the interior 28 of the press box 15 and thus into the mold cavity 27.
  • the press plate 16 is connected via a piston rod to a press piston 35 which is movable in a press cylinder 17 and is in the form of a double-acting piston. It is thus possible to lower or raise the press plate.
  • a guide rod 18 which is guided displaceably in a recess in the stand or the press box 15.
  • the compression device described above thus allows the use of an air flow compression molding process.
  • a lifting device is also provided in the area under each table 9, which comprises a lifting cylinder 4, a lifting crossbar 5 connected to this and lifting guide rods 6, which are connected to the lifting crossbar 5.
  • a lifting cylinder 4 By actuating the lifting cylinder 4, it is thus possible to lower or raise the lifting crossbeam 5 and thus the guide rods 6.
  • a carrier 7 At the upper ends of the guide rods 6, a carrier 7 is releasably attached, on which a lifting pin 8 is mounted. By adjusting the position of the carriers 7, it is possible to adapt the lifting device to the respective shape and configuration of the molding boxes 24 or the filling frames 25.
  • the piston connected to the lifting crossbar 5 via the piston rod 34 enables a precisely controllable lifting of the finished form or of the molding box 24 from the model plate 22.
  • the pivoting of the turntable unit 3 can be done manually in smaller molding machines, but it is also possible to provide an auxiliary drive for pivoting the turntable unit 3. Furthermore, locking devices can be provided in order to ensure an exact positioning of the tables 9. Since the piston 12 is in the form of a double-acting piston, it is ensured in the position ready for pivoting shown in FIG. 1 that the supporting piston 13 does not bear against the supporting plate 26, so that the rotary table unit 3 can pivot freely.
  • molding machine By means of the molding machine according to the invention, it is now possible to lift a filled molding box 24 in the region of a lifting station marked 31 and to replace it with an empty molding box. Furthermore, molding sand can be fed into this lifting station, for example from the operating side 29. While these operations are taking place, it is possible to compress the molding sand accordingly in the area of the compression side 30.
  • FIG. 2 shows an end view of the molding machine shown in FIG. 1, but the illustration of the molding box and the filling frame has been omitted.
  • FIG. 3 shows a top view of the molding machine according to the invention, which is also not equipped with a molding box or a filling frame.
  • the arrows 32 and 33 indicate the pivotability of the turntable unit 3.
  • the mold cavity and thus the molding sand located therein is formed by introducing compressed air through the air inlet 19 pre-compressed. Subsequently, a compression is carried out by means of the pressure plate 16. The pressure box cavity 28 is then vented via the air inlet 19, whereupon the pressure plate 16 is withdrawn by the piston 35.
  • the second exemplary embodiment differs from the first described exemplary embodiment in that below the filling side and the compaction side the respective lifting and supporting devices are not arranged on the turntable unit but on the frame.
  • a number of reciprocating pistons 12 are mounted in cylinders 37 on the compression side on the frame below the turntable unit.
  • the lifting pistons 12 each have a coupling at their upper end, which enables a connection to the table guide rods 14, which are mounted on the turntable unit 3 so as to be vertically displaceable.
  • the turntable unit 3 has a bearing bush arrangement 38.
  • a vertically displaceable piston rod 34 with an associated piston is mounted in a cylinder 39 on the lower part of the frame 1.
  • the upper end of the piston rod 34 can be coupled to an extension of a push-off crossbar 5, which in turn has free ends, as shown in particular in FIG. Has carrier 7, which are connected to lifting pins 8.
  • the piston rod 34 or 11 Since not only a vertical upward movement but also a return movement is to be carried out by means of the piston rod 34 or the reciprocating piston 12, the piston rod 34 or 11 has at its upper end a coupling body 26 which is in the form of a thickened head region is and can be inserted into a groove 39 of the element to be coupled, for example the table guide rod 14.
  • the groove 39 extends transversely through the respective element, so that when the turntable unit 3 rotates, the coupling body 26 can be inserted into the groove 39. It is therefore not necessary to take additional clutch measures and / or to manually disengage or engage a clutch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
EP89108368A 1988-09-07 1989-05-10 Machine à mouler Expired - Lifetime EP0357871B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3830331A DE3830331A1 (de) 1988-09-07 1988-09-07 Formmaschine
DE3830331 1988-09-07

Publications (3)

Publication Number Publication Date
EP0357871A2 true EP0357871A2 (fr) 1990-03-14
EP0357871A3 EP0357871A3 (fr) 1991-07-31
EP0357871B1 EP0357871B1 (fr) 1995-03-01

Family

ID=6362416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108368A Expired - Lifetime EP0357871B1 (fr) 1988-09-07 1989-05-10 Machine à mouler

Country Status (5)

Country Link
US (1) US5127816A (fr)
EP (1) EP0357871B1 (fr)
AT (1) ATE119089T1 (fr)
DE (3) DE8817014U1 (fr)
ES (1) ES2072274T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015826A1 (fr) * 1993-12-11 1995-06-15 Adolf Hottinger Maschinenbau Gmbh Dispositif de tirage des noyaux ou des moules de fonderie

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305128A1 (de) * 1993-02-19 1994-08-25 Wagner Heinrich Sinto Masch Formmaschine
DE4305129A1 (de) * 1993-02-19 1994-08-25 Wagner Heinrich Sinto Masch Formmaschine
CN101687250A (zh) 2007-06-01 2010-03-31 新东工业株式会社 附有铸造砂箱的铸型的造型设备及方法
JP5829912B2 (ja) * 2008-07-21 2015-12-09 ティン ウォング，テック ホルムアルデヒドを含まない成形品及び関連部品の製造方法
JP5626639B2 (ja) * 2010-08-09 2014-11-19 新東工業株式会社 鋳型造型方法
CN110842141B (zh) * 2019-11-29 2020-11-17 安庆海威尔机械有限公司 活塞环砂型成型模具
CN110947919B (zh) * 2019-12-12 2020-11-17 安庆海威尔机械有限公司 一种脱模机构

Family Cites Families (17)

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DE548756C (de) * 1930-03-04 1932-04-18 Alfred Baillot Drehtischformpresse
DE820186C (de) * 1949-08-30 1951-11-08 Badische Maschinenfabrik A G Formmaschine mit einem in waagerechter Ebene schwenkbaren Drehtisch
DE1058701B (de) * 1955-08-24 1959-06-04 Badische Maschinenfabrik A G S Vorrichtung zum selbsttaetigen Abheben des Formkastens von der Modellplatte und zum selbsttaetigen Ausfahren des Formkastens bei selbsttaetig arbeitenden Drehtisch-Formmaschinen
DE1752932U (de) * 1957-07-22 1957-09-26 Kabel Vogel & Schemmann Ag Maschinen zur herstellung von giessereiformen.
US3577610A (en) * 1968-04-16 1971-05-04 Little Inc A Apparatus for manufacturing prestressed concrete members
DE1801314A1 (de) * 1968-10-04 1970-05-06 Marker Hannes Spitzenhaltevorrichtung fuer Sicherheits-Skibindungen
CH529587A (de) * 1970-10-22 1972-10-31 Von Roll Ag Vorrichtung zur Herstellung von Blöcken
CH550748A (de) * 1971-04-28 1974-06-28 Alusuisse Apparatur zum herstellen von gruenen probekoerpern aus kunstkohle.
US3868209A (en) * 1973-02-22 1975-02-25 Koehring Co Twin sheet thermoformer
IT1010613B (it) * 1974-04-04 1977-01-20 Longinotti Spa Dosatore per materiale semi asciut to per la fabbricazione di mat tonelle di cemento a due strati per piastrelle di ceramica ed al tro
DE2721874C2 (de) * 1977-05-14 1983-09-29 Michael 8900 Augsburg Achinger Gießereiformmaschine
US4184533A (en) * 1978-05-30 1980-01-22 Esco Corporation Machine for shaping sand into cores or molds
JPS5670920A (en) * 1979-11-14 1981-06-13 Asahi Chem Ind Co Ltd Apparatus for manufacturing synthetic resin product
DE3010652C2 (de) * 1980-03-20 1983-10-20 Buderus Ag, 6330 Wetzlar Formanlage zur Herstellung von Gießformen
SU1158362A2 (ru) * 1983-09-14 1985-05-30 Проектно-Технологический Трест Организации И Технологии Шахтного Строительства "Оргтехшахтострой" Станок дл изготовлени железобетонных зат жек
DE3422687C1 (de) * 1984-06-19 1985-06-13 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Kern- und Maskenschiessmaschine
JPS6268712A (ja) * 1985-09-20 1987-03-28 Toyoda Gosei Co Ltd 成形機の型開閉装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015826A1 (fr) * 1993-12-11 1995-06-15 Adolf Hottinger Maschinenbau Gmbh Dispositif de tirage des noyaux ou des moules de fonderie
US5701946A (en) * 1993-12-11 1997-12-30 Adolf Hottinger Maschinenbau Gmbh Apparatus for shooting foundry cores or molds

Also Published As

Publication number Publication date
DE58909051D1 (de) 1995-04-06
EP0357871B1 (fr) 1995-03-01
DE8817014U1 (de) 1991-11-21
US5127816A (en) 1992-07-07
EP0357871A3 (fr) 1991-07-31
ES2072274T3 (es) 1995-07-16
DE3830331C2 (fr) 1992-07-02
ATE119089T1 (de) 1995-03-15
DE3830331A1 (de) 1990-03-08

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