EP0087575A1 - Machine à mouler pour la production de moules sans châssis - Google Patents

Machine à mouler pour la production de moules sans châssis Download PDF

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Publication number
EP0087575A1
EP0087575A1 EP83100566A EP83100566A EP0087575A1 EP 0087575 A1 EP0087575 A1 EP 0087575A1 EP 83100566 A EP83100566 A EP 83100566A EP 83100566 A EP83100566 A EP 83100566A EP 0087575 A1 EP0087575 A1 EP 0087575A1
Authority
EP
European Patent Office
Prior art keywords
molding
side parts
molding machine
boxes
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.)
Granted
Application number
EP83100566A
Other languages
German (de)
English (en)
Other versions
EP0087575B1 (fr
Inventor
Michael Achinger
Erhard W. Jaeger
Reinhold Lipp
Walter Streitenberger
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
Application filed by Individual filed Critical Individual
Priority to AT83100566T priority Critical patent/ATE30864T1/de
Publication of EP0087575A1 publication Critical patent/EP0087575A1/fr
Application granted granted Critical
Publication of EP0087575B1 publication Critical patent/EP0087575B1/fr
Expired 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
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed

Definitions

  • the invention relates to a molding machine for the production of boxless molds with two mold boxes which can be moved to and fro between a model plate carrier which can be moved in and out, which are enclosed by a rectangular frame which absorbs the reaction forces arising during the pressing process, and a hollow mold which accommodates the flowable molding material Machine frame.
  • a molding machine with a hollow machine frame is known from the same U.S. patent, which is C-shaped in the vertical central plane, the vertical web as a molding sand connecting line and the two C-arms for introducing the molding sand into the mold cavities of the two Shaped boxes serve in their closed position.
  • the two mutually associated ends of the C-arms are each surrounded by an annular cylinder, in each of which an annular piston acted upon by a pressure medium ben works, which in turn is connected to the lattice-shaped ram.
  • These gratings are subject to erosion due to the molding sand flowing through them and are therefore subject to considerable wear.
  • Two actuating cylinders are additionally required for the movement of the two molding boxes. Since an open C would open up as a machine frame due to the high pressing forces, tie rods - as explained and shown at the beginning of the USA PS - are still required.
  • the present invention has for its object to provide a molding machine for the production of boxless casting molds with the smallest possible number of assemblies and components, which nevertheless ensures the same quality as the expensive machines in terms of precision, particularly with regard to the offset which is decisive for the production committee.
  • mechanical engineering it is an old fact of experience that a machine is more susceptible to faults the more complicated it is constructed, since each machine is only as strong as its weakest link. With the reduction of the assemblies, therefore, a minimum of susceptibility to faults should also be achieved. Overall, the manufacturing and operating costs of the molding machines are to be reduced to such an extent that it is also possible for financially weaker small and medium-sized companies to use such machines.
  • the rectangular frame forming the machine frame is symmetrical in the central plane normal to the vertical frame center plane, that its The side members forming the longitudinal struts are at the same time hollow to accommodate the flowable molding material and are openly connected to the sand filling funnel, and in the area of the closed position of the molding boxes, that is to say when they rest on the model plates, have injection openings, and that the side parts also have the guides for the axial displacement of the molding boxes .
  • the machine frame designed according to the invention itself also performs three functions, namely: providing the molding material to be blown in, tie rod functions and guide functions for the molding boxes.
  • 1 denotes the machine frame designed as a closed, symmetrical frame with the side parts 2, 2 'forming the lateral spars, which are connected to the upper transverse yoke 3 and the lower transverse yoke 3'.
  • the side parts 2, 2 ' are - as can be seen from Fig. 3 - formed as strong box-sheet profiles, so that they safely absorb the reaction forces introduced into them during the pressing process.
  • the cavities 4, 4 serve to receive of the flowable molding material (indicated by dotted lines) and extend at least over the displacement "s" of the molding boxes 5, 6.
  • the side parts 2, 2 ' are in open connection with the sand filling funnel 7-.
  • the guide plates 8, 8' and 9, 9 'for the molding boxes 5, 6 are attached, which in turn have the guide plates at the edges with the guide strips 10, 10' and 11, 11 'embrace (Fig. 3).
  • the upper injection openings 12, 12 'and the lower injection openings 13, 13' are formed in the two side parts 2, 2 'and the injection boxes 14, 14' and 15, 15 are also slot-shaped in the molding boxes 5, 6 'arranged opposite each other so that the openings 12, 12' and 13, 13 'in the side parts 2, 2' are closed when the mold boxes 5, 6 are pulled apart and when they rest on the model plates 16, 17 with the openings 14, 14 'or 15.15' in the mold boxes 5.6 in an open flow connection.
  • the mold boxes here also take over the function of the valve slides controlling the injection slots in the side parts 2, 2 ', so that special valves are saved for this.
  • the opposing injection openings reliably prevent the formation of "slipstream", as they often appear with one-sided injection.
  • the guide plates 8, 8 'and 9, 9' forming the guideways are arranged at a distance "a" from one another, so that on each side part a guide link 18, 18 'is formed, in which the crosshead-like guide runners 19, 19' (Fig 3) equipped, box-shaped model plate carrier 20 is guided when retracting.
  • the scenes 18, 18 ' serve to fix the model plates 16, 17 during the pressing process.
  • the molding box 6 in the outward stroke position rests against the stops 22, 22 ', whereas the upper molding box 5 opposite it has driver strips 23, 23' with which it is attached to the press die 24 of the press cylinder 25 assigned to it.
  • the lower molding box 6, on the other hand, is taken along by the press die 26 of the press cylinder 27 when it is raised. This eliminates the need for "complicated latching devices with their controls in the rough operation of a molding shop.
  • the side parts 2, 2 ' have passage openings 28, 29 for the insertion of pallets 30 or for the discharge of the finished, added molded bales 31, 32.
  • the molding boxes 5, 6 are pulled apart and the model plate carrier 20 is moved out.
  • the two mold halves (mold bales) 31, 32 are stripped, placed together with the pallet 30 carried along on the press ram 26 and lowered to the level of the roller table.
  • the model plate carrier 20 is - as FIG. 4 shows - designed as a hollow, hermetically sealed box. It is fastened to the end of a support tube 37 which penetrates the vacuum container 33 and is axially displaceable with the actuating cylinder 34 and rotatably mounted in the bearings 33, 36.
  • the support tube 37 has flow openings 38, 39 both on the box side and in the inflow region of the vacuum container 33.
  • a poppet valve 40 is accommodated in the support tube 37 with the valve seat 42, which is controlled by the valve rod 41 penetrating the support tube 37. The blown air sucked out of the mold cavities therefore flows through openings indicated in FIG.
  • the vacuum is to be understood as any lower than the pressure of the blowing air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Table Equipment (AREA)
EP83100566A 1982-02-20 1983-01-22 Machine à mouler pour la production de moules sans châssis Expired EP0087575B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100566T ATE30864T1 (de) 1982-02-20 1983-01-22 Formmaschine zur herstellung kastenloser formen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3206169A DE3206169C1 (de) 1982-02-20 1982-02-20 Formmaschine zur Herstellung kastenloser Formen
DE3206169 1982-02-20

Publications (2)

Publication Number Publication Date
EP0087575A1 true EP0087575A1 (fr) 1983-09-07
EP0087575B1 EP0087575B1 (fr) 1987-11-19

Family

ID=6156279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100566A Expired EP0087575B1 (fr) 1982-02-20 1983-01-22 Machine à mouler pour la production de moules sans châssis

Country Status (6)

Country Link
US (1) US4537238A (fr)
EP (1) EP0087575B1 (fr)
JP (1) JPS58192653A (fr)
AT (1) ATE30864T1 (fr)
DE (2) DE3206169C1 (fr)
DK (1) DK68183A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586555A (en) * 1983-11-02 1986-05-06 Buehler Eugen Mold making plant

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0785824B2 (ja) * 1985-12-13 1995-09-20 新東工業株式会社 鋳型押圧装置
DK335889A (da) * 1989-07-06 1991-01-07 Dansk Ind Syndikat Presse til presning af stoebeformparter, og mode lbaerer til brug ved en saadan presse.
DE29610658U1 (de) * 1996-06-18 1997-10-23 Kienle, Rainer, 86391 Stadtbergen Formmaschine
DE29700975U1 (de) * 1997-01-21 1998-05-20 Kienle, Rainer, 86391 Stadtbergen Formmaschine
JP5123629B2 (ja) * 2007-09-27 2013-01-23 アイシン高丘株式会社 無枠式砂鋳型鋳造装置
CN103611890B (zh) * 2013-12-16 2015-06-17 衢州市依科达节能技术有限公司 一种爪型内模装配臂
US20160221077A1 (en) * 2015-01-30 2016-08-04 United Technologies Corpoation Bondcasting process using investment and sand casting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556196A (en) * 1967-08-18 1971-01-19 Buehler Eugen Method for automatic production and transportation of flaskless sand moulds in metal casting
US3744551A (en) * 1971-03-04 1973-07-10 Dansk Ind Syndikat Machine for producing moulds consisting of identical mould parts that are lined up against each other
DE2924114A1 (de) * 1979-06-15 1980-12-18 Arenco Bmd Maschfab Formanlage zum herstellen von zweiteiligen, kastenlosen giessformen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096547A (en) * 1961-09-14 1963-07-09 Pettibone Mulliken Corp Automatic core-making machine
US3528481A (en) * 1968-10-17 1970-09-15 Pettibone Corp Core making machine with hardening gas manifold
CH590096A5 (fr) * 1975-03-11 1977-07-29 Fischer Ag Georg
JPS5333290A (en) * 1976-09-09 1978-03-29 Toagosei Chem Ind Co Ltd Suspension polymerization of vinyl chloride
DE2653788C2 (de) * 1976-11-26 1981-08-27 Bühler, Eugen, Dipl.-Ing., 8871 Burtenbach Verfahren und Vorrichtung zum Herstellen von Gießformen aus bindemittelhaltigem Formsand
DE2814140A1 (de) * 1978-04-01 1979-10-11 Stotz Ag A Giessereiformmaschine
JPS6048261B2 (ja) * 1979-07-11 1985-10-26 株式会社豊田自動織機製作所 鋳型造型方法
JPS56139255A (en) * 1980-03-31 1981-10-30 Sintokogio Ltd Flaskless molding machine of mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556196A (en) * 1967-08-18 1971-01-19 Buehler Eugen Method for automatic production and transportation of flaskless sand moulds in metal casting
US3744551A (en) * 1971-03-04 1973-07-10 Dansk Ind Syndikat Machine for producing moulds consisting of identical mould parts that are lined up against each other
DE2924114A1 (de) * 1979-06-15 1980-12-18 Arenco Bmd Maschfab Formanlage zum herstellen von zweiteiligen, kastenlosen giessformen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586555A (en) * 1983-11-02 1986-05-06 Buehler Eugen Mold making plant

Also Published As

Publication number Publication date
DK68183D0 (da) 1983-02-17
DK68183A (da) 1983-08-21
US4537238A (en) 1985-08-27
ATE30864T1 (de) 1987-12-15
DE3206169C1 (de) 1983-09-29
DE3374528D1 (en) 1987-12-23
EP0087575B1 (fr) 1987-11-19
JPH0254181B2 (fr) 1990-11-20
JPS58192653A (ja) 1983-11-10

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