US2020131A - Apparatus for shaking out chills and castings - Google Patents

Description

Nov. 5, 1935- G. w. BEHNKE 2,020,131

APPARATUS FOR SHAKING OUT CHILLS AND CASTINGS Filed Nov. 25, 1953 3 Sheets-Sheet l INVENTCR.

g4. ATTORNEY.

Nov. 5, 1935- e. w. BEHNKE 2,020,131

' APPARATUS FOR SHAKING OUT CHILLS AND CASTINGS I Filed Nov. 25, 1933 s Sheets-Sheet 2' I. 7 I g fl ATTORNEY.

Nov. 5, 1935- w, EH 2,020,131

APPARATUS FOR SHAKING OUT CHILLS AND CASTINGS Filed Nov. 25, 1933 3 Sheets-Sheet 3 v 51 ea 4 6 32 E1/ 50 IN VEN TOR.

ATTORNEY.

Patented Nov. 5, 1935 UNITED STATES.

arraaa'rus ron srmxmc our cnmns m oasrmcs George W. Behnke, Durand, Simplicity Engineering Mich a corporation of Michigan Mich assignor to Company, Durand,

Application November 25, 1933, Serial No. 699,684-

g 6 Claims. This invention relates to a method and apparatus for'shaking out-castings, chills, sand, or

A further object resides in the various steps for shaking out the moulds, screening the sand,-shaking out the casting and chills, crushing the lumps,-

or storage bin.

- The above and other objects will appear as the specification progresses, reference being had to the accompanying drawings inwhich I have shown the preferred embodiment of my invenand conveying the chills to a suitable receptacle 'tion, and in which like reference numerals indicate like parts throughout the severalviews thereof.

In the drawings' a Fig. 1 is a part sectional side view showing the shakeout screen, conveyers, etc.

Fig. 2 is a top plan view.

Fig. 3 is a front view.

Fig. 4 is an enlarged part sectional detail ofthe crushing plate.

Fig. 5 is an enlarged detail side view of the crusher bars, the broken line position illustrating the bars raised to permit the passage of the chills.

'Fig. 6 is a fragmentary side view ofthe shakeout screen showing an alternate crushing means.

Fig. 7 is a front view thereof. 7 1

Fig. 8 is an enlarged detail of the crushing discs and bearing supports.

Fig. 9 is anend view thereof.

Referring nowmore particularly to the draw-.

ings, the numeral 2 indicates a gyrating screening machine such as used. for screening sand, gravel, coal, and other fragmentary materials; this is supported on' a main frame comprising beams or standards 3 which are in turn mounted on a base 4, the screen beingdriven by means of a motor 5 which is connected to any suitable source ofelectrical supply. This screening device can be of any desired de- A gyrator shaft assembly 6 is journaled in bearings which are mounted on the beams 3, and side' plates 8 are mounted on said gyrator shaft and form a screen frame, a grizzly or shakeout screen 9 being secured on said plates and on which 8 the cope of the mould (not shown) is placed by a workman stationed alongsidethe machine.

A perforated screen I0 is mounted on the side plates below said grizzly, and the sand from the cope falls thereon and sifts through said screen, 1m with the exception of the burnt lumps which are not broken up by the screen action, together with pieces which are too large to pass the openings in the screen to; these "lumps travel toward the discharge end of the screen and are reduced by means of a crushing attachment to behereinafter described.

An angle iron frame I I is mounted on the beams 3 at the discharge end of the screen and com-- prises corner member I2 connected by means of .20 horizontally disposed angles I3, spaced apart longitudinally disposed members 14 being secured to said angles 13 so that a rigid superstructure is provided.

. A horizontally disposed rod' I 5 is mounted in 25 the angle l3 which spans the frame, and a pluprovided in said bars, and a transversely disposed rod I8 is mounted in said openings, links H! being connected pivotally to said rod, the upper ends of said links being connected to an eye bolt 20, the upper end of the eye bolt being threaded and which is mounted iii the cross members l3, the nuts 2|. serve to hold the bolts in position, and also serve as an adjusting means for raising or lowering the bars to accommodate chills of various thicknesses, and it will be obvious that as the burnt lumps of sand and the chills travel towards the crushing plate that. the large lumps of sand will engage the curved section A of the bars and be gradually crushed to size to pass the screen I, the chills passing beneath "the crushing bars and discharging off the apron}; into a receptacle, bin, or. onto a conveyer (not shown) These bars which make up the crushing unit are free to raise and lower (within certain units) independent of each. other, consequently, one or more of said bars may be raisedto permit passage of chills or" other .solid objects, the remain- 55' ing bars being. in normal low position to crush lumps of sand or slag.

In operation the top half of the cope is placed on the grizzly 9, and all the sand is shaken out;

this sand, together with any hard lumps, drops onto the perforated screen In, and the sand is screened through onto hoppered plates 23 and 24, which direct it onto an endless belt conveyer 25.

The burnt sand lumps which are too large to pass this perforated plate are carried to the lower end of the screen and against the curved section B of the bars l6, and are gradually crushed so that they readily pass the screen Ill. After the cope has reached the lower end of the grizzly it is disposed of as desired. I

The workman next takes the lower half of the mould or flask which is termed the drag, and which contains the castv parts, burnt sand, and chills; this is placed on the upper end of the grizzly, the fine sand, burnt lumps, and chills pass the grizzly and fall onto the perforated plate, the castings and flask remaining on said grizzly until thoroughly cleaned of sand and chills, after which ,it is removed as usual.

The burnt lumps of sand togetherwith the chills travel down the screen H), the lumps being crushed as hereinbefore described, the chills passing beneath the crushing bars, raise only the bars necessary to permit their passage, the a jacent bars remaining in normal position.

An alternate crushing means is shown in Figs. 6 to 9 inclusive, and comprises a plurality of discs 26 having a hub 21 formed integral therewith, said hub serving to space the discs from each other. These discs are mounted on a transversely disposed shaft 28, the end of the shaft being mounted in a slotted opening 29 provided in a bearing hanger 30, the upper end of the hanger terminating in a cylindrical threaded section 3| which projects through the frame members l3, and a nut 32 is provided so that theshaft assembly may be adjusted vertically.

In the present illustration, 1 have shown three separate shaft assemblies C, D, and fE; these are identical in every respect and are longitudinally spaced and at different elevations so that burnt lumps of sand or slag readily travel i downwardly and are crushed by engagement with these discs. The discs are independent of each other, and the slotted bearing hanger permits a limited vertical movement of the shaft assembly.

In the construction shown in Figs. 8 and 9 of the drawings, the discs are rotatable on the shaft 28 and are rotated by contact with the gyrating screen, but it will be clearly understood that these discs may be keyed on the shaft and positively driven if desired by providing a motor (not chills, and castings from flasks or the like.

What I claim is:

1. An apparatus for shaking out chills, comprising a main frame, a screen frame mounted thereon, a sand screen mounted on the screen frame, a grizzly spaced above the sand screen, a

vertically movable crushing mechanism mounted 5 on the main frame and cooperating with the lower end of the sand screen for crushing lumps of fragmentary materials, and means for gyrating saids'creen frame.

2. An apparatus for shaking out sand and solid 10 objects from moulds and comprising a main 1 frame, a screen frame mounted thereon, vertically spaced screens mounted on said screen frame,

a vertically adjustable crushing apparatus mounted on the main frame and in engagement with the 15 lower end of the lower screen, and means for gyrating said screen frame.

3. An apparatus for shaking out sand and solid objects from moulds, comprising a main frame,

a gyrating mechanism journaled on said frame, 20 vertically spaced screens mounted on said gyrating mechanism, a vertically'adjustable crushing mechanism pivotally mounted on the main frame with its lower end engaging the face of the lower screen, and means for driving said gyrat- 15 ing mechanism.

4. An apparatus for shaking out sand and solid objects from moulds comprising a main frame,

a gyrating unit journaled on said main frame, a screen frame mounted on said unit and including spaced apart screens, and a crushing unit pivotally mounted on themain frame at the discharge end of the lower screen and comprising a plurality of bars mounted to move independently of each other, and means for adjusting the height of said bars with relation' to the face of the screen.

5. An apparatus of the class described and comprising a main frame, a gyrating unit journaled thereon, a screen frame mounted on said unit and 40 including vertically spaced screens, a crushing unit mounted on the main frame and in contact with the face of the lower screen, said unit comprising a plurality of pivotally mounted individual barrnembers having vertically disposed slotted openings in the lower end thereof, and a rod hung from the main frame and mounted in said slotted openings to provide for a limited vertical movement of one bar with relation to the other.

' 6. An apparatus of the class described and com- 50 prising a main frame, a gyrating unit journaled thereon, a screen frame mounted on the gyrating unit and comprising vertically spaced screens, with the lower screen extending beyond the end 5 of the upper screen, a crushing unit pivotally mounted on the main frame at the end of the upper screen and comprising a plurality of crushing bars, slotted openings in said bars, a transversely disposed rod extending through said slot- 50 ted openings, and means connected to said rod and to said main frame for adjusting said crush- I ing unit with relation to the lower screen.

GEORGE W. BEHNKE.

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