US1894877A - Centrifugal mold filling apparatus - Google Patents

Centrifugal mold filling apparatus Download PDF

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Publication number
US1894877A
US1894877A US534651A US53465131A US1894877A US 1894877 A US1894877 A US 1894877A US 534651 A US534651 A US 534651A US 53465131 A US53465131 A US 53465131A US 1894877 A US1894877 A US 1894877A
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US
United States
Prior art keywords
sand
air
blades
casing
filling apparatus
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
US534651A
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English (en)
Inventor
Kurze Wilhelm
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.)
LANGE AND GEILEN
Original Assignee
LANGE AND GEILEN
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 LANGE AND GEILEN filed Critical LANGE AND GEILEN
Application granted granted Critical
Publication of US1894877A publication Critical patent/US1894877A/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
    • B22C15/20—Compacting by centrifugal forces only, e.g. in sand slingers

Definitions

  • This invention relates to apparatus for filling sand into molds, and particularly into 6 mold boxes, which are used in foundries.
  • apparatus b means of which a shower of foundry san' ,'substantially free from air, is arran ed to be thrown with great force into the mold boxes, so that the finished molds are very firm and homogeneous.
  • Such apparatus may comprise rapidly-revolving, convex ,(rearwardly curved projection blades arranged in a casing, w ich propel the air before them outwards through apertures in the casing, the foundry sand being introduced immediately above the projection opening of :the casing by means of a worm conveyer. In this way, at the moment when the blades strike the sand, the air in front of the plates has already been almost completely removed.
  • the air which is still in front of the blades when the projection of sand takes place may be removed through an air a erturev and damper, which are provided ad acent to the projection opening of the casing.
  • the constant supply of sand under pressure to the rojection blades is essential for the removaf of air which would be detrimental tothe manufacture of the molds, and for regular operation of the apparatus; This is effected, in accordance with one constructional embodiment of the invention, by means of a worm conveyer located in a cond iit se- 584,851, and in Germany lay 26, 1928.
  • Figure 1 being a front elevation
  • Figure 2 a artial section on line II-II of Fig. 1
  • igure 3 a plan view of Fig. 1.
  • the box-shaped frame 1 of the machine comprises a table 2 ,on to which the foundry sand is cast, a pro ection casing 3, in which is located a projection opening 4, sand-supply members, which are described hereinafter, and the driving mechanism.
  • a pro ection casing 3 in which is located a projection opening 4, sand-supply members, which are described hereinafter, and the driving mechanism.
  • an opening 6 covered by a sieve 5 is located, this opening leading to a vertical hopper 7.
  • a distributor 8 which consists of a shaft 45, provided with one or more raking arms 46 thereon, one only being shown. Shaft 45 is driven through abelt or chain 49 from shaft 21, hereinafter referred to.
  • the hopper 7 leads into a conduit 9, in which is located a worm 10.
  • the conduit 9 is secured to the casing 3 just above the projection opening 4.
  • a rotatable disc 11 In the casing 3 is located a rotatable disc 11, to which are secured two or more projection blades 12, formed convex in the direction of rotation. On the circumference of the casing apertures 13 are provided, and just above the sand supply conduit 9 is an air vent 14. Adjacent to the projection opening 4, the casin contains an air aperture 15 and a damper p ate 16, which is U-shaped in crosssection, see Fig. -2. I
  • the apparatus is driven by an electric motor 18, the speed of which may be regulated between wide limits.
  • On shaft 28 of the motor is a pulley 29, which drives pulley 30, mounted on shaft 20, carryin the disc 11, through belt 19.
  • a second sha 21 is driven from shaft by belt 22 and pulleys 31 and 32.
  • a bevel gear 33 is keyed on shaft 21 and drives bevel gear 34 on vertical'shaft 39, which drives the scrapers 17 through bevel gears 40 and 41, shaft 42 and bevel ears 43 and 44.
  • Bevel gear 34 meshes with vel gear 35, the hub of which carries spur teeth 36, in mesh with spur gear 37 on shaft 38, which carries the worm 10.
  • trunnions 23 are provi ed on the frame 1 of the apps;
  • the rotatable disc 11 acts with its blades 12 as an air propeller.
  • the air propelled by the blades passes outwards through the apertures 13 and the vent 14.
  • the blades 12 strike the sand with their outer ends, after the greater part of 15 the air propelled by the blades has been removed.
  • the blades strike the sand the latter is projected through the projection opening 4 and air thrown out by the blades near the projection opening after the sand 2 has left the blades will strike the damper Pith the sand, through said adjacent air out- In testimony whereof I have signed my name to this specification.
  • the projection opening 4 in the casing is substantially tangential to the circular path of the outer ends of the blades.
  • the apparatus illustrated in the drawin is to be considered only as a constructiona example.
  • the number of pro- .jection blades 12 may evidently be altered.
  • the sand may also be cast initially into the hopper 7 by means of. a chain conveyer or a screw conveyer instead of from the table 2 rovided with scrapers 17.
  • the projection lades 12 may be integral with the disc 11 or alternatively connected to it.
  • An interchangeable armour-plate 24 may be rovided Y adjacent the projection opening 4 .o the easbe evident to those skilled in the art, may be made without exceeding the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Casting Devices For Molds (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US534651A 1928-05-26 1931-05-02 Centrifugal mold filling apparatus Expired - Lifetime US1894877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1894877X 1928-05-26

Publications (1)

Publication Number Publication Date
US1894877A true US1894877A (en) 1933-01-17

Family

ID=7748075

Family Applications (1)

Application Number Title Priority Date Filing Date
US534651A Expired - Lifetime US1894877A (en) 1928-05-26 1931-05-02 Centrifugal mold filling apparatus

Country Status (5)

Country Link
US (1) US1894877A (fr)
BE (1) BE353498A (fr)
DE (1) DE536474C (fr)
FR (1) FR659016A (fr)
GB (1) GB312369A (fr)

Also Published As

Publication number Publication date
DE536474C (de) 1938-10-23
GB312369A (fr) 1930-05-08
BE353498A (fr) 1928-09-29
FR659016A (fr) 1929-06-24

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