US1994028A - Molding apparatus - Google Patents

Molding apparatus Download PDF

Info

Publication number
US1994028A
US1994028A US502524A US50252430A US1994028A US 1994028 A US1994028 A US 1994028A US 502524 A US502524 A US 502524A US 50252430 A US50252430 A US 50252430A US 1994028 A US1994028 A US 1994028A
Authority
US
United States
Prior art keywords
mold
container
sand
substance
core
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
US502524A
Other languages
English (en)
Inventor
Rolff Friedrich
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.)
Osborn Manufacturing Corp
Original Assignee
Osborn Manufacturing Corp
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 Osborn Manufacturing Corp filed Critical Osborn Manufacturing Corp
Application granted granted Critical
Publication of US1994028A publication Critical patent/US1994028A/en
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
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles

Definitions

  • the present invention'concerns'l a new method andfnew means ⁇ Vforthe filling of mold boxes or core boxesfwithl mold'substances such as sand and the like, by pneumatic action.
  • V Meid machines' in which unecmoidiniling ⁇ Substance,"usuallysand, is forced' from a sand cham- ".berinto the core box or mold box by compressed lair' have Suleredirequently from the defect ⁇ of ⁇ runeven blowing. Too much airf gets into theA 1 0 mold boxiorcorel boxlwth too little mold' sand.
  • Fig. 1 isa front elevation showing the arrangement ofA components ofthe mold machine.
  • Fig, 2 vistheplan of Fig. 1.
  • Fig. 3 is a section through the moldsubstance 1 struction, the' piecesA ofvwhich can be clamped to- V'container alongy yL1A-b of Fig. 1.
  • Fig. 4 is' a section through the cylinder head of i the rising vand falling cover,.accordingto c and d basejl.
  • i Fig. 5 shows theoperating valve in cros's section 'jpiston rods 41, the pistons 42 of which move in' through e and f rof Fig. 2.
  • A1 denotes the base of the mold machine.
  • columns 2 and 3 are firmly supported in a vertical position.
  • the upper ends of the two columns are connected with each oth'erby a bridge 5, whiohnthe middle is shaped into the air cylinder 4.
  • the 50 moldsubstance container -6 is mounted so as to be vertically movable by the aid of theguide arms 7 and 8.
  • the mold substance container 6 is held at a given height vbytwo compression springs 9 and ,10'
  • the mold substance 1 container 6 isclosed at bottom by a-bottom .11.
  • a means for stirring the mold sand is provided in the'interior of the mold agent container 6, a means for stirring the mold sand is provided.V
  • This means vfor stirringvthe sand ⁇ consists mainly of 15 agitator arms 19 which are fixed on a shaft 20.V
  • the shaft 20 passes through the hollow piston rod 15 ofthe cover and-thus through the cylinder 4, and is coupled at Ythe upper endwith .au worm wheel 22.l
  • the worm wheel 22 is connected 20 movement of the oontainer, -the upper end 'of the 25 Lfshaft 20 is journalled in ayoke 25.
  • This'yoke 25 is carried by the upper' ends of two vertical rods 2 6 andl 27 xedly mountedy on the container.
  • Air is supplied vto'the interior of thevalve by a 'circumferential groove V50and ay port 50 con- 'neoted therewith, the groove being" positioned 'opposite the outlet of a compressed airl supply ypipe 50.V vBy turning the valvebody 17 vairis successively admitted through ports 44, 45 and 46 to pipes 43, 32 and 18, respectively; first setting the clamp 37 to hold the core or mold closed and in place; next moving the piston 14 down to close the cover 13 on the mold substance container; and finally admitting compressed air into the top of the container 6 to blow the core.
  • sand is being blown from the container 6 into a core or mold.
  • the valve position of Fig. 5 does not correspond to the positions of the various parts in Figs. 1 and 4. u
  • valve body 17 is rotated in the opposite direction; thus rst cutting off the airsupply fromthe pipe 18, and at the same time venting that pipe (and through it the container 6) through the channel 49 on the outer surface of the ⁇ valve body 17'; second, venting the pipe 32 through the .channel 48 ⁇ and so permitting the lid 13 to be lifted by hand or otherwise; third, venting the pipe 45 ⁇ and so releasing the clamp 37.
  • a mold substance carrier 52 is fitted on the column 2 of the molding machine so that it can be swung away from the machine by means of the bearing'53.
  • the mold substance container 6 In the mold substance container 6, there is inserted 4a part, 54 expanding conically downwards, above which the mold substance is by the aid of the compressed air made dense and compact towards .the outlet openings 12 of the bottom l1, before the mold substance is forcedvout of its container.
  • the above described molding machine which serves as a constructional example of the present invention, works in the following wayzy
  • the mold substance container 6, which is mounted so as to be movable up and down on columns 2 and 3 of the basel, is preferably completely filled with sand. This is done by means of the mold substance carrier 52, mounted so as to be pivoted ⁇ about the column 2 of the base 1.
  • the valve 17 controllingthe machine isnow turned by means of the hand-wheel 51 fastened to it.
  • Compressed aii1 is fed through the pneumatic duct 50to.
  • the control lvalve The control valve 17 distributes this compressed air fed in and in the iirst place delivers it to the clamp 37 mounted on the base 1, in orderto grip .
  • the mold box 36 which is beneath the mold substance container 6.
  • a further actuation of the controlling valve 17 supplies compressedair above the piston 14whereby the Acover 13 is pressed down onto the edge of the mold substance container, the latter being shut off at the top and at the same time moved ⁇ vertically until the bottom of the mold substance containerrests on the upper edge of the mold box and in this way also shuts off the upper Vface Yof the mold box.
  • the controlling valve is then vturned further so that compressed air isalso conducted through the rising and falling cover 13, into the mold substance .container 6.
  • the agitator provided inthe latter container is set in motion by thevelectric motor, so that now the compressed ⁇ air,.by the aid of the agitator, continuously forces ,u the mold substance conducted along over the outlet openings of the container bottom, through such openings into the adjoining mold or core boxes.
  • the controllling-valve is again actuated, whereby the screw clamp is discharged of air and the mold box released at thesides.
  • the air is then released from the upper part of the cylinder 4 whereupon the cover 13 goes upwards and the mold substance container is pressed upwards by the force of the two pressure springs 9 and 10.
  • the mold box is therefore now also released in the vertical gripping direction and can be run out of the machine on the roller-mounted table.
  • a core or mold blowing machine comprising, in combination, a pressure-tight sand container, a top therefor, means for moving said top axially relatively thereto, an agitator in said container,
  • a. sand container above the core box having a bottom provided with openings and also having a stirring element arranged to move closely adjacent the bottom and over and across the openings and means to direct compressed airdown- Wardly through the said container so that such compressed air acts on the upper surface of the sand in the container and causes the sand to be discharged therefrom into the core box through said openings together with compressed air while the sand is being kept in motion by the stirring element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US502524A 1929-12-16 1930-12-15 Molding apparatus Expired - Lifetime US1994028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1994028X 1929-12-16

Publications (1)

Publication Number Publication Date
US1994028A true US1994028A (en) 1935-03-12

Family

ID=7919535

Family Applications (1)

Application Number Title Priority Date Filing Date
US502524A Expired - Lifetime US1994028A (en) 1929-12-16 1930-12-15 Molding apparatus

Country Status (2)

Country Link
US (1) US1994028A (enrdf_load_stackoverflow)
BE (1) BE375801A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468672A (en) * 1946-05-03 1949-04-26 Western Hardware & Specialty M Core blower
US2490559A (en) * 1946-07-06 1949-12-06 Taccone Pneumatic Foundry Equi Core blowing machine
US2512871A (en) * 1944-03-29 1950-06-27 Redford Iron & Equipment Compa Core blowing machine
US2524447A (en) * 1948-09-23 1950-10-03 Western Hardware & Specialty M Sand feed for core blowers
US2543598A (en) * 1946-06-21 1951-02-27 Axel H Peterson Core molding machine
US2556618A (en) * 1948-08-18 1951-06-12 Harrison Machine Company Core blower
US2598621A (en) * 1948-04-02 1952-05-27 Taccone Pneumatic Foundry Equi Machine for blowing sand into molds
US2659945A (en) * 1951-05-15 1953-11-24 Shellmold & Machine Co Inc Mold forming machine
US2861301A (en) * 1953-12-05 1958-11-25 Fischer Ag Georg Sand blast molding machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512871A (en) * 1944-03-29 1950-06-27 Redford Iron & Equipment Compa Core blowing machine
US2468672A (en) * 1946-05-03 1949-04-26 Western Hardware & Specialty M Core blower
US2543598A (en) * 1946-06-21 1951-02-27 Axel H Peterson Core molding machine
US2490559A (en) * 1946-07-06 1949-12-06 Taccone Pneumatic Foundry Equi Core blowing machine
US2598621A (en) * 1948-04-02 1952-05-27 Taccone Pneumatic Foundry Equi Machine for blowing sand into molds
US2556618A (en) * 1948-08-18 1951-06-12 Harrison Machine Company Core blower
US2524447A (en) * 1948-09-23 1950-10-03 Western Hardware & Specialty M Sand feed for core blowers
US2659945A (en) * 1951-05-15 1953-11-24 Shellmold & Machine Co Inc Mold forming machine
US2861301A (en) * 1953-12-05 1958-11-25 Fischer Ag Georg Sand blast molding machine

Also Published As

Publication number Publication date
BE375801A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US1994028A (en) Molding apparatus
US2698976A (en) Machine for making molds
US3556196A (en) Method for automatic production and transportation of flaskless sand moulds in metal casting
US3229336A (en) Match plate molding machine for the simultaneous production of cope and drag mold sections
US3123342A (en) Plastic mixing apparatus
US2259768A (en) Core making machine
US2563643A (en) Process for making cores
DE2833999A1 (de) Verfahren und vorrichtung zur herstellung von giessformen und -kernen
US3530928A (en) Blow head having valve means cooperating with flexible chamber walls
KR970029928A (ko) 코어를 제조하기 위한 방법 및 장치
US2598621A (en) Machine for blowing sand into molds
US2656575A (en) Core blowing apparatus
US2468672A (en) Core blower
US4144925A (en) Method and apparatus for the production of foundry sand molds
US2545944A (en) Reservoir exhaust for core blowing machines
US2861301A (en) Sand blast molding machine
US2512871A (en) Core blowing machine
US3038221A (en) Device for hardening foundry cores and foundry moulds by means of gaseous or atomized reagents, particularly co2 gas
US2759229A (en) Control mechanism for core blowers
US2820998A (en) Machine for making shell molds
US3089206A (en) Blow and squeeze molding machine and method of molding
US1950632A (en) Core forming mechanism
US2779074A (en) Method of blowing sand into sand molds
US2928147A (en) Agitatorless foundry shooting device
US3030675A (en) Foundry machine