EP0327825B1 - Formmaschine - Google Patents

Formmaschine Download PDF

Info

Publication number
EP0327825B1
EP0327825B1 EP89100553A EP89100553A EP0327825B1 EP 0327825 B1 EP0327825 B1 EP 0327825B1 EP 89100553 A EP89100553 A EP 89100553A EP 89100553 A EP89100553 A EP 89100553A EP 0327825 B1 EP0327825 B1 EP 0327825B1
Authority
EP
European Patent Office
Prior art keywords
sand
box
moulding machine
mould
machine according
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 - Lifetime
Application number
EP89100553A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0327825A3 (en
EP0327825A2 (de
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6346818&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0327825(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Heinrich Wagner Sinto Maschinenfabrik GmbH filed Critical Heinrich Wagner Sinto Maschinenfabrik GmbH
Priority to AT89100553T priority Critical patent/ATE75171T1/de
Publication of EP0327825A2 publication Critical patent/EP0327825A2/de
Publication of EP0327825A3 publication Critical patent/EP0327825A3/de
Application granted granted Critical
Publication of EP0327825B1 publication Critical patent/EP0327825B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 for forming a sand mold by means of a molding box and a model plate, sand being filled in a first working step and the sand being subsequently compacted in a second working step.
  • the molding process is carried out by joining a model plate and a molding box, whereupon the molding sand is filled into the molding box. The sand is then compacted and, after the sand has achieved sufficient strength, the sand mold is separated from the model plate.
  • Such molding machines are usually operated manually, i. H. an operator controls the individual work steps depending on the time that the operator needs in each case.
  • the manual work required for this includes in particular the feeding of an empty molding box, the filling of molding sand and the removal of the finished sand mold.
  • roller conveyors are already used in some molding machines to transport the mold boxes or the finished sand molds in and out.
  • Known molding machines are usually designed so that since the model plate during the molding process remains essentially stationary, only an upper box shape or a lower box shape, ie a sand mold which forms the upper part of the finished mold, or a sand mold which forms the lower part of the finished sand mold can be produced. In this case it is necessary to use several molding machines in a multi-part sand mold. With a two-part sand mold, at least two molding machines are required. It proves to be extremely inconvenient and cumbersome in practice that associated mold halves have to be produced in different molding machines and spatially separated from each other, since it is not possible, for example, to adapt the respective production cycle times to one another so that the same number of top box shapes and Sub-box shapes can be created. A slight malfunction of one of the molding machines results in the need to also stop or throttle the operation of the other molding machine.
  • Molding machines are also known, by means of which both the upper box shape and the lower box shape can be produced using only one molding machine, but in these cases it is necessary to alternate the respective model plates for the upper or model half.
  • the production of the finished sand molds takes place in these machines by first producing a certain number of lower box molds, whereupon a suitable quantity of upper box molds can then be created. Even with such machines, it proves disadvantageous that considerable organizational effort is required to ensure that an equal number of usable upper box molds and lower box molds are produced. Furthermore, it proves to be particularly time-consuming if only one half of the mold can be produced at a time, since the operator cannot act during the compaction of the sand and is therefore not at full capacity during this work step.
  • a molding machine for the production of casting molds in which an extension arm is used to insert the model device and the molding box into a space between a molding table and a pressing device.
  • the molding box was filled with sand in a separate facility that was not connected to the molding machine, and this filling could also be done manually.
  • the boom serves to transport the model device and the molding box, so it is a pure handling device, which is only assigned to the molding machine described, but is not part of the molding machine with regard to its work steps and functions.
  • a system for the production of molds and cores is also known from DE-B-2 220 276.
  • a table is provided which can be rotated through 180 °.
  • the system has a first structural unit in which the molding box is filled with sand and the sand is compacted, while the finished mold is removed in the second structural unit.
  • the table is a pure handling device and is relatively complicated in its structure, since it not only has to be rotatable through 180 °, but also has to be horizontally movable back and forth.
  • a disadvantage of this device is that the entire filling and compression process, as already known, takes place in the actual molding machine, while the second structural unit is only used to remove the mold.
  • a relatively long dwell time is required in the filling and compacting station in order to complete the mold, and on the other hand, the handling table is mechanically complicated.
  • the invention has for its object to provide a molding machine of the type mentioned, which allows the production of an equal number of upper box molds and lower box molds with minimal time and simple construction and easy handling and in particular ensures good utilization of both human labor and the molding machine .
  • the molding machine according to the invention is characterized by a number of considerable advantages. On the one hand, it is possible to produce both an upper box shape and a lower box shape on a single molding machine in such a way that an equal number of upper box shapes and lower box shapes can always be removed from the molding machine.
  • Another significant advantage of the invention is that it is not necessary to handle the model plates for the upper mold box or the lower mold box individually, rather the Model plates both remain on the swiveling table, so that it is only necessary to feed the mold boxes or to transport them away.
  • Another significant advantage of the molding machine according to the invention is that both a sand filling station and a sand compacting station are provided, so that it is not necessary for the operator or the molding machine to be underused or underused during one of the work steps. While in the molding machine according to the invention there is a filled molding box in the sand compacting station, the other molding box with the associated model is pivoted into the sand filling station, so that the operator can sand the other molding box during the time that the machine needs to compact the sand can fill.
  • the molding machine according to the invention is not restricted to a specific type of compression of molding sand, rather it is possible in the sand compression station to use a wide variety of technical or physical methods for sand compression.
  • a particularly advantageous embodiment of the molding machine is given in that the table for removing the molding box filled with compressed molding sand from the model plate is designed as a lifting table. Since the molding sand is usually filled into the molding box from above, the filling process as such is not disturbed or interrupted by the fact that the lifting table is moved in the vertical direction. On the other hand, by moving the lifting table, it is possible in a particularly simple manner to separate the molding box from the model plate, since the vertical movement required for this is not carried out by the molding box, but only by the table.
  • a separating device lifting the molding box is provided in the region of the sand compacting station for removing the molding box filled with compacted sand from the model plate. In this way, before swiveling back the table, it is possible to lift the molding box with the compressed sand upwards, so that only the model plate remains on the table. This proves to be particularly advantageous in that the operating sequence of the molding machine is not interrupted by such a separation of the molding box from the model plate and it is not necessary to provide an additional unloading station.
  • At least one transport device is provided in the area of the sand compacting station for the removal of the molding box.
  • the mold box which is separate from the model plate and encompasses the mold half, can thus be removed in a particularly simple and material-friendly manner.
  • the transport device comprises at least two pivot levers, which have a top end region about a horizontal axis are pivotally mounted on a frame of the molding machine in the upper region of the sand compacting station and bearing rollers are provided at the lower end regions for receiving and horizontally moving the molding box.
  • This configuration makes it possible in a particularly simple manner to receive the molding box and to move it laterally by means of the bearing rollers, it being possible in particular to pass the molding box thus received directly onto a roller conveyor.
  • This type of handling prevents damage to the model half. Possible damage due to improper handling on the part of the operating personnel also appears.
  • the molding machine has a horizontally arranged table 3, which is pivotable about a vertical axis 4.
  • the table 3 is dimensioned such that two model plates 2 can be arranged on its top, one model plate 2 representing the mold half for the upper mold box, while the other model plate forms the mold half for the lower box mold.
  • a sand filling station 5 is shown on the left side, while the molding machine has a sand compacting station 6 on the right side.
  • a molding box 1 is placed on the model plate 2 located in the sand filling station, which is open at the top and on the top of which a filling frame 13 is arranged, which facilitates the introduction of the molding sand and its distribution.
  • the table 3 is pivoted in that the table 3 is fixedly mounted on a rotary column 14 which can be rotated about the axis 4 by means of a lever device 15 relative to a frame 11 of the molding machine.
  • the lever device 15 is shown in a schematic manner.
  • the table 3 can be pivoted through 180 °, whereby, due to the drive by means of the lever device, the table is not rotated in a full circular arc, but only swings back and forth.
  • the molding machine As shown in Figs. 1 and 2, the molding machine, as shown in Figs. 1 and 2, has a lifting device 16 with which it is possible to lift either the table 3 or only the model plate 2 located in the area of the sand compacting station, so that it is possible is, the molding box 1 in the position shown on the right side of Fig. 1.
  • a lifting device 16 with which it is possible to lift either the table 3 or only the model plate 2 located in the area of the sand compacting station, so that it is possible is, the molding box 1 in the position shown on the right side of Fig. 1.
  • two pivot levers 9 are mounted such that they can each be pivoted about a horizontal axis 10.
  • the pivoting possibility is shown in Fig. 1 by the arrows.
  • the pivot lever 9 each carry a plurality of bearing rollers 12, which are dimensioned and arranged so that it is possible to reach under the molding box 1, so that it is mounted on the bearing rollers 12 and is laterally displaceable. It is thus possible to move
  • a compression press 17 is also provided on the upper region of the frame 11, by means of which the molding sand filled in the sand filling station 5 can be compressed in the sand compression station 6.
  • the model plate 2 is lifted out of the turntable 3 by the lifting device 16 and, together with the molding box 1 and the filling frame 13, which are lifted from their supports by the lifting movement, pressed against the frame 11 of the compacting device 17. The compaction device then comes into action.
  • Fig. 2 shows a side view of the molding machine shown in Fig. 1, from which in particular the compression press 17 can be seen particularly clearly. Like the lifting device 16, this has hydraulic actuating devices by means of which the molding machine can be controlled.
  • the lever device 15 shown in Figs. 1 and 3 for pivoting the table 3 is advantageously in the form of a hydraulic cylinder 15 '.
  • Fig. 3 a top view of the molding machine according to the invention is shown schematically, from which, in particular, the possibility of pivoting the table 3 from the sand filling station 5 into the sand compacting station 6 is recognizable. From Fig. 3 it can also be seen that the frame 11, which surrounds the sand compacting station 6, is designed so that the molding box 1 in the sand filling station 5 is freely accessible from above, so that the filling of molding sand is not hindered.
  • the invention is not limited to the exemplary embodiment shown, rather it is possible within the scope of the invention to further develop the molding machine in such a way that the mold box is separated from the model plate in the sand compacting station in a different way. For example, it is possible to only lift the model plate relative to the table in order to hang the molding box in the transport device formed by the swivel lever. It is also possible according to the invention to carry out the removal of a molded box filled with a mold or the supply of an empty molded box in another way, for example by using overhead conveyors instead of the roller conveyors described.
  • the exemplary embodiment of the molding machine according to the invention is shown only schematically, and a detailed description of the sand feed devices and of the feed and removal devices for the molding boxes has been omitted. Furthermore, no details regarding the fastening and storage of the model plates and the molding boxes were given, since these are known from the prior art.
  • the dimensioning of the molding machine it is possible to adapt it to the respective operating conditions, in particular it is also possible to produce an upper box shape or a lower box shape which can be used to cast several workpieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Inorganic Insulating Materials (AREA)
  • Organic Insulating Materials (AREA)
EP89100553A 1988-02-06 1989-01-13 Formmaschine Expired - Lifetime EP0327825B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100553T ATE75171T1 (de) 1988-02-06 1989-01-13 Formmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3803648A DE3803648C2 (de) 1988-02-06 1988-02-06 Formmaschine
DE3803648 1988-02-06

Publications (3)

Publication Number Publication Date
EP0327825A2 EP0327825A2 (de) 1989-08-16
EP0327825A3 EP0327825A3 (en) 1990-08-08
EP0327825B1 true EP0327825B1 (de) 1992-04-22

Family

ID=6346818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100553A Expired - Lifetime EP0327825B1 (de) 1988-02-06 1989-01-13 Formmaschine

Country Status (3)

Country Link
EP (1) EP0327825B1 (it)
AT (1) ATE75171T1 (it)
DE (2) DE8817084U1 (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4342364C1 (de) * 1993-12-11 1994-10-13 Hottinger Adolf Masch Vorrichtung zum Schießen von Gießereikernen oder -formen
IT1294690B1 (it) * 1997-07-29 1999-04-12 Foundry Automation S A S Di A Metodo e macchina per la realizzazione di forme di fonderia.
DE19848049A1 (de) * 1998-10-19 2000-04-20 Josef Mertes Gießerei-Formmaschine
CN109129225B (zh) * 2018-08-27 2020-12-29 马鞍山市兴隆铸造有限公司 一种定量布砂装置
CN114054687B (zh) * 2021-11-15 2023-08-08 重庆市极鼎机械制造股份有限公司 一种带辅助功能的铸件模具装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7439210U (de) * 1975-04-17 Haeberle W Einrichtung zum Verdichten von schüttbaren oder fließfähigen Gütern
DE820186C (de) * 1949-08-30 1951-11-08 Badische Maschinenfabrik A G Formmaschine mit einem in waagerechter Ebene schwenkbaren Drehtisch
DE6811936U (de) * 1968-12-18 1971-02-04 Badische Maschf Gmbh Formmaschine mit geradlinigem formkastendurchlauf
CH572369A5 (it) * 1973-12-06 1976-02-13 Buehrer Erwin

Also Published As

Publication number Publication date
ATE75171T1 (de) 1992-05-15
EP0327825A3 (en) 1990-08-08
EP0327825A2 (de) 1989-08-16
DE8817084U1 (de) 1992-08-13
DE3803648C2 (de) 1995-02-16
DE3803648A1 (de) 1989-08-17

Similar Documents

Publication Publication Date Title
DE2834211A1 (de) Verfahren und vorrichtung zum herstellen von formlingen aus wenigstens zwei teilformlingen, insbesondere durch spritzgiessen von gummiwerkstoffen
EP0387535A2 (de) Verfahren und Vorrichtung zum Herstellen von Giesserei-Formen
EP0327825B1 (de) Formmaschine
DE60016471T2 (de) Kerneinlegevorrichtung für matchplate-giessmaschine
EP0444431A2 (de) Verfahren und Vorrichtung zum Herstellen von Kernen für Giessereizwecke
DE3830331C2 (it)
DE2721874C2 (de) Gießereiformmaschine
DE60309802T2 (de) Einzelformvorrichtung zum Druckgiessen von Sanitärartikeln und ein Verfahren zum Formwechseln in einer solchen Maschine
DE2528645C3 (de) Vorrichtung zur automatischen Herstellung kastenloser Gießformen
DE2822028A1 (de) Anlage zum herstellen von giessformhaelften in formkasten
DE1508739C3 (de) Vorrichtung zur Herstellung kernbestückter, kastenloser Gießformen
DE1290337B (de) Vorrichtung zum UEbertragen von ausgestanzten Formrohlingen
DE4344636C1 (de) Schwenkbalkenpresse zum Pressen keramischer Formteile
DE2610977C2 (de) Maschine zur Herstellung kastenloser Sandformen
DE3704881C2 (it)
DE69415581T2 (de) Vorrichtung zum Tragen unterer Formhälften in einer Kernformmaschine
DE3151610A1 (de) Maschine zur herstellung von giessformen
DE3140500A1 (de) "einrichtung zum herstellen von roemern aus stroh und verfahren zum betreiben dieser einrichtung"
DE2713980A1 (de) Verfahren und vorrichtung zur herstellung von sandformen
EP0993892B1 (de) Auspackstation für Formkästen
DE2434245C2 (de) Verfahren und Vorrichtung zum Kerneinlegen in kastenlose Gießformen
DE2538876C2 (de) Gießereiformmaschine
DE3214826A1 (de) Vorrichtung an dachziegel-revolverpressen
DE10004611A1 (de) Backeinrichtung zur Herstellung insbesondere hochwandiger Formkörper aus einer backbaren Formmasse
DD139799B1 (de) Formmaschine zur herstellung von kastenlosen sandformen

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19890803

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19910514

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 75171

Country of ref document: AT

Date of ref document: 19920515

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: HEINRICH WAGNER SINTO MASCHINENFABRIK GMBH

Effective date: 19921204

NLR1 Nl: opposition has been filed with the epo

Opponent name: HEINRICH WAGNER SINTO MASCHINENFABRIK GMBH

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

D27C Opposition proceedings terminated (deleted)
26 Opposition filed

Opponent name: HEINRICH WAGNER SINTO MASCHINENFABRIK GMBH

Effective date: 19921204

Opponent name: KUENKEL-WAGNER SERVICE UND VERTRIEBSGESELLSCHAFT M

Effective date: 19940623

NLR1 Nl: opposition has been filed with the epo

Opponent name: KUENKEL-WAGNER SERVICE UND VERTRIEBSGESELLSCHAFT M

EAL Se: european patent in force in sweden

Ref document number: 89100553.0

PLAD Information related to termination of opposition procedure modified

Free format text: ORIGINAL CODE: 0009299OPPC

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

R27C Opposition proceedings terminated (corrected)

Effective date: 19950303

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050113

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20060104

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060111

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20060124

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070114

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070113

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070113

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080124

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080124

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080118

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20090113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090113

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080124

Year of fee payment: 20

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20091201