US1905357A - Molding apparatus - Google Patents

Molding apparatus Download PDF

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Publication number
US1905357A
US1905357A US510803A US51080331A US1905357A US 1905357 A US1905357 A US 1905357A US 510803 A US510803 A US 510803A US 51080331 A US51080331 A US 51080331A US 1905357 A US1905357 A US 1905357A
Authority
US
United States
Prior art keywords
rod
tube
container
sleeve
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
US510803A
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English (en)
Inventor
Zimmermann Gustav
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
Application granted granted Critical
Publication of US1905357A publication Critical patent/US1905357A/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
    • 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
    • B22C15/245—Blowing tubes

Definitions

  • My invention relates to apparatus for producing molds and cores? for foundries, and particularly to apparatus employing' compressed air to force dry sand from a container into molding or core boxes.
  • Oneobject of the invention is to provide a device which can be used in many Ways andrwhichattains its object by very simple means.
  • Another object of the invention is to prevent sand from sticking to its container by providing means whiclii counteract this tendency and which require no special attendance.
  • Figure 1 is a vertical section of the device according to the invention.
  • Figure 2 is a detail sectional view of the rod, sleeve and end connections, in which the sleeve is shown so arranged that its flange or collar 22 closes the inlet opening 23 in the upper end of the container.
  • Figure 3 is a similar View of the same in which the constructionof the 'tube is modified so that its inlet openings 21 can be closed and the opening 23 kept open so that compressed air can enter the container only through said opening 23.
  • Figure 4 is a detail elevation of the worm bush which is fast to therod 3.
  • Figure 5 is a detail sectional view of the sleeve nut which cooperates with the worm bush to Vcause the axially movable rod 3" to impart rotary movement to the tube.
  • Figure 6 is a detail elevation of the rod, tube, guiding sleeve and sleeve nut assembly for causing the axially movable rod to impart rotary movement-to the tube.
  • the numeral 1 designates a sand container to be filled with molding sand by means of an attachment not shown, the container being ⁇ 510,803; and'in Germany January 28,- 1930.
  • the rod 3 is connectedon top with ato double-armed lever rotatably disposed in the bracket 7 of theY covera4 and connected with a bar 8 ⁇ adapted to be moved rup 'andl down by the adjustment of a lever 9, the,4 adjustment being dictated by a hand lever,"" not shown.
  • a spring 10 keeps the bar 8 in its highest position so that ythe opening of the nozzle is closed completely by thehead of the rod 3.
  • a bush" 00 11 having a very coarse male thread and being arranged in a nut 12 provided with a corresponding thread, the 'bush 11 Vbeing held axially rotatable by the cover '4 and the sleeve 13 which is axially rotatably sup- 65 ported by the potlike structure 5.
  • the nut 12 has a lateral projection' 14 iny which a pawl V15 is held byy the pin' 16 so as to be loosely rotatable.
  • the pawl ⁇ 15 engages with its free end the teeth 17 ofthe'edge 18 of 70 the sleeve13 wherein the tube 19 is adjustably held by the screw 20.
  • the tube 19v is provided with the openings 21v and a circular collar 22 which fits into, and packs, the opening 23 in the top of the container 1 75 At its lower part the tube 19 is fitted with the radialvanes 24;.
  • the device may be placed directly on the flask or" molding box toghel filled or be arrangedat a distancev therefrom.
  • the tube 19. might. ⁇ be turned .only during. thedescent of? the rod 3 by 'disposing the -pawl '15 so that it acts towards thel other side.
  • a sandv molding machine of a closed.. receptacle for molding sand having.l a.. discharge opening in the container for sand, having, a discharge nozzle at the lower endV and an. airinlet opening, at the upper end, an axially movable l rod extending through the. container toopen and'V close the. nozzle, av tube surrounding the rod, and the boreo which isv ory greater diameter thanthe ⁇ rod and said: tube having ⁇ an air inlet opening near its upper end, and means to supply compressed air to the inlet openings of the container and the tube.
  • Molding apparatus comprising a closed container for sand, having a discharge nozzleat the lower end and an air inlet opening at the upper end, an axially movable rod extending through the container to open and close the nozzle, a vertically movable tube surrounding the rod, and the bore of which is of greater diameter than the rod and said tube having an air inlet opening near its upper, engdilshiftable into and outof connection with the air opening of the container, and means to supply compressed air 'to the inletuopenings'of the container and hasa; circular collar,the aperturethe said cover itting the said collar'.V
  • Molding Vapparatus comprising nozzle at the lower end and an air inlet opening. at the. upper end', an axially movable and ⁇ elosethe nozzle', ak revoluble. tube through which the rode-Xtends and-the. bore ofy which is of greater diameter than thev rod, said tube having agitator elements and alsovha-ving an airinletopenin-g near its upper end,; means to supply compressed air to the inlet openings of the container andtube, means to impart upward and downward axiali movements ⁇ to the rodv and means operated by the rod to impart rotary movementto the tube. 8.
  • Apparatus as claimed in claim 7, including ⁇ a guiding and holdingsleeve in which the upper portion of the tube is sesnv cured and in which the tube has arflange collar spaced :from its air inlet opening; and adapted to close the air inlet opening of the container when the tubew in one adjusted position; f
  • a 'closed container for sand having a. discharge rod extending through the container to openf 10.
  • the means to cause the rod to impart rotary movement to the tube comprises e Worm bush fast to the rod, a sleeve nut engaged by said Worm bush, a guiding and holding sleeve in which the upper end of the tube is secured, said guiding and holding sleeve being provided with ratchet teeth and a. pawl pivotally mounted on the sleeve nut and engageable with said ratchet teeth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US510803A 1930-01-28 1931-01-23 Molding apparatus Expired - Lifetime US1905357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905357X 1930-01-28

Publications (1)

Publication Number Publication Date
US1905357A true US1905357A (en) 1933-04-25

Family

ID=7748623

Family Applications (1)

Application Number Title Priority Date Filing Date
US510803A Expired - Lifetime US1905357A (en) 1930-01-28 1931-01-23 Molding apparatus

Country Status (3)

Country Link
US (1) US1905357A (sv)
BE (1) BE376763A (sv)
FR (1) FR711845A (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423341A (en) * 1945-10-03 1947-07-01 Axel H Peterson Blowhole plug for sand boxes or containers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423341A (en) * 1945-10-03 1947-07-01 Axel H Peterson Blowhole plug for sand boxes or containers

Also Published As

Publication number Publication date
FR711845A (fr) 1931-09-18
BE376763A (sv)

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