US3672434A - Machine for producing casting moulds - Google Patents

Machine for producing casting moulds Download PDF

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Publication number
US3672434A
US3672434A US3672434DA US3672434A US 3672434 A US3672434 A US 3672434A US 3672434D A US3672434D A US 3672434DA US 3672434 A US3672434 A US 3672434A
Authority
US
United States
Prior art keywords
chain
moulding
levers
boxes
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.)
Expired - Lifetime
Application number
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English (en)
Inventor
Herbert 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 Maschinenfabrik
Original Assignee
Heinrich Wagner Maschinenfabrik
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 DE19691935282 external-priority patent/DE1935282C/de
Application filed by Heinrich Wagner Maschinenfabrik filed Critical Heinrich Wagner Maschinenfabrik
Application granted granted Critical
Publication of US3672434A publication Critical patent/US3672434A/en
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
    • B22C11/10—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
    • 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
    • B22C11/08—Machines in which the moulds are moved during a cycle of successive operations by non-rotary conveying means, e.g. by travelling platforms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/20—Clamps
    • Y10T292/225—Cam-operating means

Definitions

  • a machine for producing casting moulds comprises a multilink chain, each link being a flat plate which carries a moulding box.
  • the chain is circulated to carry empty moulding boxes beneath a sand filling device followed by a compacting device and filled and patterned moulding boxes are eventually removed from the chain and stacked on a lifting platform.
  • the invention relates to a machine for the production of casting moulds for pile casting, wherein empty moulding boxes are placed on a pattern plate and the boxes are filled with sand and removed from the pattern plates after compacting of the sand.
  • the casting operation is performed'at the same time on a large number of moulding boxes stacked on top of each other.
  • the prerequisite for this method is that the castings have a flat base surface, e.g. piston rings, so that the smooth upper sand surface of one moulding box can form the lower face of the casting mould of the box above.
  • Each moulding frame has a traversing channel from which a passage branches off to the actual mould. The traversing channels of all the moulding frames form a down channel common to all the moulds. The pile casting operation thus makes it possible to cast a large number of castings at the same time.
  • the machine described above for the production of casting moulds for pile casting has a multilink chain driven by two star wheels.
  • Each chain link forms a carrier for a moulding box.
  • a sand feeding and compacting device is situated above the upper horizontal chain run, and two lifting platforms are arranged below the lower horizontal chain run and situated one behind the other in the direction of advance of the chain.
  • the first platform removes filled moulding frames from a chain link and the second platform places empty moulding frames on a chain link.
  • FIG. 1 is a front view of a machine according to the invention
  • FIG. 2 is a side view of the same machine
  • FIG. 3 is a plan view of moulding boxes and pattern plates situated at the bottom of the machine.
  • FIG. 4 shows a holding device for a moulding box.
  • the machine illustrated in the drawings has a machine frame made up of steel sections, essentially consisting of a frame 1, four corner posts 2 and two double-T beams 3 each fastened to two posts 2.
  • each pair of co-axial bearinG pedestals 4 carries a shaft 5.
  • a four-branch starwheel 6 is situated on each shaft 5. Both star wheels entrain an endless chain formed by plates 8 to 17, which constitute 10 chain links in the example illustrated. Every consecutive pair of links is hingedly interconnected by pins 18 which engage in recesses of the starwheels and which carry rollers 7 on their free ends.
  • a pattern plate 20 is fastened on each plate 8 to 17.
  • the rollers 7 bear alternately on rails 19 and 21 which are fastened on brackets 22, which in turn are respectively fastened on the beams 3 and on posts 23 which are fixed on the beams 3.
  • a sand hopper 24 is mounted above the chain, on the post 23. This sand hopper has two sieves 25 and 26, with the hopper mouth 27 situated between these. A sand scraper is indicated at 28.
  • a thrust piston 31 whose piston rod 32 carries on its lower end a thrust plate 33.
  • the cylinder 30 is fastened to the post 23 by means of struts 29.
  • Two lifting cylinders 34 and 35 whose pistons are indicated at 36, are mounted on the foundation of the machine frame.
  • Each piston carries a plate 38, which plates serve for lifting carriages 39 and 40 which can be pushed on rails 37, over a plate 38.
  • the carriage 40 carries filled moulding boxes 41; the carriage 39 carries empty moulding boxes.
  • each moulding box consists of a flat-bar iron frame 43. Angle bars 44 are welded on at two opposite sides of the frame. A moulding box filled with sand 45 is shown in FIG. 4.
  • Two double-armed levers 46 which are pivotally mounted in the plate 8 by means of pivots 47, hold fast the filled moulding box.
  • the upper lever arm 48 of each lever is urged outwardly by a spring 49 which bears on an abutment 50 on the plate.
  • the other lever arm 51 carries a round steel section 52 which is pressed against the underface of the angle bar 44 by the spring 49.
  • FIG. 4 also shows two cylinders 53 with pistons 54 and piston rods 55. As shown in FIG. 1, these cylinders are situated on the machine frame in the median plane of the cylinder 35.
  • the chain consisting of the chain links 8 to 17 circulates, and each chain link, during this circulation, reaches the position of the link 8, in which the plate 8 bears an exposed and downwardly directed pattern plate 20.
  • the chain link 8 reaches the position of the chain link 9
  • the entrainment of the chain is interrupted, a pressurized fluid is fed to the cylinder 34, the carriage 39 is lifted so far by the piston rod 36 and by the plate 38, that an empty moulding box 42 is placed on the pattern plate 20.
  • the angle bars 44 force the round steel sections 52 aside against the force of the springs 49.
  • the springs 49 press the round sections from below against the angle bars 44, so that the empty box is held fast on the pattern plate 20.
  • the entrainment of the chain is switched on again.
  • the chain link 8 reaches the illustrated position of the chain link 12
  • the moulding box is partially filled with finely sieved sand through the sieve 25, to obtain a smooth mould.
  • the box 43 is filled completely with sand through the opening 27.
  • the surplus sand is removed by the scraper 28 during the further displacement of the box to the position of the chain link 14.
  • Fine sand is again sprinkled on the top layer of the sand filling by the sieve 25, so that the surface which is in fact a mould delimitation surface, also consists of fine sand.
  • the displacement is interrupted at the position of the chain link 14.
  • the sand is compacted by means of the rammer 31. After the compacting action, the box travels to the position of the chain link 17.
  • the entrainment is interrupted again at this point, the carriage 39 with the filled moulding boxes is displaced upwards.
  • the levers 46 are pivoted anticlockwise by the pistons 54, i.e. the filled moulding box 41 is released and received by the underlying box on the carriage 39.
  • a pattern plate it is unnecessary for a pattern plate to be fastened on each chain link. It is possible to operate with a single pattern plate, if the latter is fastened on the underside of the thrust plate 33 i.e. suspended from the same. In this case, the pattern plate is pressed into a box filled with sand, the top sand layer as well as the subjacent layer consisting of finely sieved sand. The moulding boxes are then placed on and removed from the chain links themselves.
  • Machine for the manufacture of moulds for pile casting comprising a multi-link chain driven by two star wheels, each chain link of which forms a carrier for receiving a moulding box, and with means arranged for the supply of sand and for compacting, disposed above the upper horizontal chain run, characterized by two lifting platforms, disposed below the lower horizontal chain run and lying one behind the other in the direction of movement of the chain, of which the first platform serves for the removal of filled moulding boxes from the chain links, the second one for placing empty moulding boxes on the chain links, means for lifting and lowering each platform by the height of a moulding box, means carried by each chain link and operable by the movement of the moulding box being lifted by the second lifting platform for holding the moulding boxes, and fixed means at the side of the path of the chain links for rendering said holding means inoperable to release the moulding boxes at said first platform.
  • a machine according to claim 1 in which carriages are provided for the empty and the filled moulding boxes, and which carriages run on rails extending over the lifting platforms 3.
  • the sand feeding device includes a hopper having an opening at its lower end, with sieves provided at either side of the opening.
  • the sand compacting device includes a thrust plate and a pattern plate arranged on the underside of the thrust plate.
  • a machine including a pattern plate associated with each chain link, each moulding box having angle bars secured on two opposite sides thereof, said holding means comprising a plurality of double-armed levers pivoted on each chain link which levers engage the anGle bars, and springs associated with said levers to urge the levers into engagement with the angle bars to hold fast a moulding box beneath said pattern plate.
  • said fixed means includes hydraulic cylinders mounted to engage the levers to operate the levers against the pressure of said springs to release the moulding boxes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US3672434D 1969-07-11 1970-07-09 Machine for producing casting moulds Expired - Lifetime US3672434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691935282 DE1935282C (de) 1969-07-11 Maschine zur Herstellung von Gieß formen

Publications (1)

Publication Number Publication Date
US3672434A true US3672434A (en) 1972-06-27

Family

ID=5739551

Family Applications (1)

Application Number Title Priority Date Filing Date
US3672434D Expired - Lifetime US3672434A (en) 1969-07-11 1970-07-09 Machine for producing casting moulds

Country Status (3)

Country Link
US (1) US3672434A (it)
FR (1) FR2051678B1 (it)
GB (1) GB1256191A (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840063A (en) * 1973-02-27 1974-10-08 G & G Ind Inc Tandem compacting and molding apparatus with continuous inverted flask removal
US3974872A (en) * 1972-12-27 1976-08-17 Erwin Buhrer Method and apparatus for production of casting molds
US4106545A (en) * 1976-05-21 1978-08-15 C L Industries Inc. Method of automatic mold and core forming
US4156450A (en) * 1977-07-14 1979-05-29 Heatherwill Company Foundry machine and method and foundry mould made thereby
US4159732A (en) * 1976-06-11 1979-07-03 Handkammer Herbert K Method of casting
US20160075053A1 (en) * 2014-09-16 2016-03-17 Gala Industries, Inc. Systems and methods for drying pellets and other materials
CN107900282A (zh) * 2018-01-02 2018-04-13 繁昌县金牛机械铸造有限责任公司 一种砂型铸造用碾压筛砂机
CN114074178A (zh) * 2021-11-18 2022-02-22 马鞍山市博立普精密机械有限公司 一种造型机用自动填砂夯实装置及其实施方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2464111A1 (fr) * 1979-08-30 1981-03-06 Ts P Konstruktor Installation pour la fabrication de noyaux de fonderie

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE385252C (de) * 1923-11-20 Vosswerke Akt Ges Kupplungsvorrichtung fuer lose Modellplatten und Formkasten
FR674088A (it) * 1928-04-27
DE730742C (de) * 1941-08-13 1943-01-18 Zimmermann Maschf Gustav Klemmvorrichtung mit Druckzylinder fuer Formkaesten bei Formmaschinen
DE1263992B (de) * 1965-10-08 1968-03-21 Wagner Maschf Heinrich Verfahren und Vorrichtung zur Herstellung von Giessformen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974872A (en) * 1972-12-27 1976-08-17 Erwin Buhrer Method and apparatus for production of casting molds
US3840063A (en) * 1973-02-27 1974-10-08 G & G Ind Inc Tandem compacting and molding apparatus with continuous inverted flask removal
US4106545A (en) * 1976-05-21 1978-08-15 C L Industries Inc. Method of automatic mold and core forming
US4159732A (en) * 1976-06-11 1979-07-03 Handkammer Herbert K Method of casting
US4156450A (en) * 1977-07-14 1979-05-29 Heatherwill Company Foundry machine and method and foundry mould made thereby
US20160075053A1 (en) * 2014-09-16 2016-03-17 Gala Industries, Inc. Systems and methods for drying pellets and other materials
CN107900282A (zh) * 2018-01-02 2018-04-13 繁昌县金牛机械铸造有限责任公司 一种砂型铸造用碾压筛砂机
CN114074178A (zh) * 2021-11-18 2022-02-22 马鞍山市博立普精密机械有限公司 一种造型机用自动填砂夯实装置及其实施方法
CN114074178B (zh) * 2021-11-18 2024-03-15 马鞍山市博立普精密机械有限公司 一种造型机用自动填砂夯实装置及其实施方法

Also Published As

Publication number Publication date
FR2051678A1 (it) 1971-04-09
DE1935282A1 (de) 1971-01-14
FR2051678B1 (it) 1973-08-10
GB1256191A (en) 1971-12-08
DE1935282B2 (de) 1973-01-25

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