US2597246A - Mold shakeout apparatus - Google Patents

Description

May 20, 1952 M. H. KELLY MOLD SHAKEOUT APPARATUS 5 Sheets-Sheet 1 Filed Sept. 10. 1948 INVENTOR.

MICHAEL H. KELLY ATTORNEY May 20, 1952 M. H. KELLY MOLD SHAKEOUT APPARATUS 3 Sheets-Sheet 2 Filed Sept. 10, 1948 INVENTOR.

MICHAEL H.KELLY ATTORNEYS y 20, 1952 M. H. KELLY MOLD SHAKEOUT APPARATUS 3 Sheets-Sheet 3 Filed Sept. 10, 1948 FIG.'3.

INVENTOR.

MICHAEL H. KELLY wimd mm ATTORNEYS Patented May 20, 1952 UNITED STATES PATENT OFFICFQv MOLD SHAKEOUT APPARATUS Application September 10, 1948, Serial No. 48,695

The invention relates to mold shake-out apparatus and refers more particularly to apparatus for shaking out the molding sand from the molds and from the castings in the molding sand.

The invention has for one of its objects to provide and improved mold shake-out apparatus provided with means for shaking out the molding sand and removing a casting from the mold.

The invention has for another object to so construct the mold shake-out apparatus that the casting dumping device is not affected by the device for shaking out the molding sand.

The invention has for a further object to provide an improved mold shake-out apparatus in which the casting is discharged from the mold on to another portion of the shake-out device to further remove molding sand'which might ad here to the casting when discharged from a mold.

With these as well as other objects in view, the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In-the drawings:

Figure -1 is a plan view of a portion of a conveyer system including a mold shake-out apparatus embodying the invention.

Figure 2 is an enlarged plan view of the mold shake-out apparatus.

Figure 3 is a front elevation thereof.

Figure 4 is an end view thereof, partly broken away.

Figure 5 is an elevation partly broken away of the eccentric for efiecting the shaking out of the molding sand.

As illustrated in Figure 1, I is a conveyer for advancing in the direction of the arrow: the lower mold section or drag 3icontaining molding sand and castings, the upper mold section or cope having been removed. 4 is a compressed air cylinder, the plunger of which is adapted to move the drag and its contained molding sand and castings on to the conveyer 5 which carries the drag'and contained molding sand and castings to the shake-out apparatus '6 which is designed to shake-out the molding sand. and dis-.

charge the castings from the drag after which the drag is discharged on to the conveyer 1 by the plunger of the compressed air cylinder 8..

The mold shake-out apparatus 6 comprises the shake-out device 9 and the casting dumping device Ill. The shake-out device hasthe base i I the main grate 2 and the side plates l3nto which the main grate is fixedly secured. Each of the side plates has secured thereto near itsiendf the bracket [4 between the upperandlower flanges 6 Claims. (01. 22. .1)

. I 2 of which are located the upper and lower rubber blocks l5'and It. The base has the brackets l'l secured thereto with each bracket having a flange extending between the upper and lower rubber blocks. For effecting a rapid up and down motion of the main grate an eccentric device IB is provided midway of the ends of the main grate, the eccentric device havin the housing l9 extending through and secured to the side plates l3 and the eccentric 20 extending through the housing and journalled at its ends in the bearings 2i mounted on the base ll. Suitable bearings are provided between the eccentricand the housing andthe eccentric is suitably rotated as by means including the pulley 22 secured to one end of the eccentric and driven by an electric motor connected to the pulley by a belt. The main grate I2 is longitudinallly inclined so that any castings thereon will during the rapid up and down movement of the main grate travel downwardly along the same and finally drop off. This construction including the base, the main grate the sideplates and the cocentric device is a standard unit made by the Simplicity Engineering Company of Durand, Michigan. For receiving the drag with the contained molding sand and castings from the con-- veyer 5, I have provided the second grate 23 which is mounted on and extends over the main grate I2 for a part of its width. Thesecond grate is formed oi'the bars 24 extending longitudinally of and welded to the main grate and. the transverse bars'25 welded to the bars 24. The upper edges of these bars 24 and 25 are flush andform the surface for supporting the drag.

This surface is inclined downwardly and inward- 1y so that when the drag is transferred by :the conveyer 5 to the second grate the drag will move inwardly toward the longitudinal center of the shake-out device until it engages the stops formed by the upward projections 25 at the ends of the transverse bars 25.

The dumping device 10 comprises the L-shaped members 26 fixedly secured at longitudinally spaced points'to the shaft 21 extending longitudinally of the shake-out device above the main grate and journalled at its ends in the bearings 28 which are mounted on the supportingframes 29-carried by the brackets 30 upon the base 'I l. Each L-shaped member 26 has the transverse arms 31 and 32, the arms 3| in the normal position of the dumping device extending through the vertical slots33 of the longitudinal bars 24, these slots having open upper ends. Also in the normal position of the dumping device, the arms ly and have at their outer ends the pro jections 34 providing stop shouldersfor pr g ing the drag from sliding off the arms. For swinging the rockable merritfeis {I have 'provia the compressed air cylinder" 35 which is'piy'ot'all mounted on the fixed support 36 which is prefer ably secured to the floor. The-pistdn-ro 31:55: 4 the piston of the air cylinder is pivotally c n;

nected to the lever 38 which is fixed issuanc of the shaftZ'l. The air cylinder is of standard construction and is cushioned at both ends with the cushion at the free end serving t'ti'locate the normal position of the rockable members 2B. By"

admitting compressed air to the free'end of the air cylinder the shaft 21 is rotated to swing the rockable' members 26 so that their "armsI-H will engage the drag 3 and swing the same upwardly and angularly to a substantially vertical posi tion at which time the upper'end portion'o'f the drag hits the stop 39 which is in the nature of a rod extending longitudinally or and abovethe shake-out device. When the drag' 'hits' the' stop the castings will be thrown out of the drag' by reason of their momentum, and for the nu pose of -guiding these-'- castingsto the main grate -l 2 beside the second grate 23 I liaveprovided 'the guide 40 which is-in the nature of aplateexterfd ing everftheadj'acent side plate" "l3 and suitably mounted 'o'n the'base I I- as-"by means-"cr me up: rightsll. I

In operation it will be 'seen"that whn a'drag with containedm'olding' sand andcastings *con': veyed to the second grate 23 it will be ove-u d'oiirn'w'ardly"- over this gratetd a position t6 e gage-the stops formedby the upward projections 25"'of the transverse bar's 25,-l5oth' the main grate l2 and second grat'e'23 being given 'rapidup' and down 'motion by the eccentric 201 After a" suit abltime interval, during which praetically' 'all of the-molding sand is" jarred-from the drag 'arid castings/and dropped through'fsthe "grates, coir? pressed air is admitted to the freeendofih'e air cylinder and'the rockable members fl ef the dumping device are swungto raise andswifig' the drag and castingsuhtil-the drag assumes a substantially vertical position at which time it hits the'stop 39 and 'the' castings are discharged by reason of their momentum ageinst' the' g 'ul'de plate 40 and-then directed "on to the' portio'rr of' the main-grate I 2 beside thesec'ondgratefif the conveyor 1 by the'plungercf-theair' cylirl--- What I claimas myinvention 1. A mold shake-out apparatus comm-wag slongitudinally inclined main grate, a second grate mounted on and extending over said main grate for a part of its width, said second grate having an upper surface for supporting a mold section containing a casting, means for shaking said main and second grates, a device having arms normally extending transversely of said second grate and=occii1iyir'i'"a 'positibn'below said upper surfaceof'sa'idsecond grat'e,*me'ans for swinging said device in a direction moving said arms upwardly into engagement with the mold section and lifting the mold-section and casting, means engageablewith" the" lifted mold section holding the same nsaia arms 'and providing for discharge asti'rig byits momentum, and a guide posltion'elfin' the path of movement of and engageabldwith---the--discharged casting to direct thesame on to said main grate beside said second grate?- 2. A mold shake-out; apparatus comprising a m-ain gratfia second-grate mounted on and extencing cver a; portion of said-main grate, said second grate'having an-upper surface for supportinga= mold section containing a casting, means'for shaking-saidmain andsecond grates, a device having arms normallye'xtending transversely of said second grate and occupying a position below said upper surface" of said second grate, said device being supported independently of said secandproviding for-discharge of the casting by its momentum and means positioned in the path of movement of the discharged casting and enga'gcable 'therewithto direct the same on to said main grate:

-3.A-moidshake-out apparatus comprising a gratehaving anuppersurface for supporting a mold" section-containing a casting, said grate having upwardly opening recesses, means for shaking said grate,- a' rockabledevice supported independently of said grate and having arms normally extending across a portion of said grate and occupy-ing aposition within the recesses and below said upper surface of said grate, means for swinging said'devicein a direction moving said arms upwardly-intoengagement with the mold section and lifting the mold section and casting, and-stopmeans-for limiting the swinging, said stop means being'engageable with the mold section to hold the same on said arms and provide for discharge ofthe casting by its momentum.

4. -A mold shake-outapparatus comprising a grate-' havin'g-an upper surface for supporting a mold sectiorrcontaining a casting; said grate having'upwardly opening recesses, means for shaking' s'aid grater-"a device supported independently of saidgraL-teahd having arms normally extendhag-across a' portion of said grate and occupying a position within the recesses and below said upper surface of saidgrate, and-means for moving said 'clevic'e ina direction raising said arms into engagement withthe mold section and thereby raising the m'o'ldsection and casting-away from said grate'.

5. A mold shake' out apparatus comprising a gratdhaving an upper surface for supporting a moldsection-contaimng a casting, said grate having upwai'dly opening-recesses, means for shaking saidgrate, an -L-s'hapeddevice pivotally mounted-independently of said grate and having arms iioi'mally extending:across a portion of and 5. occupying a position within the recesses and below said upper surface of said grate, and means for swinging said device in a direction moving said arms upwardly against the mold section and raising the mold section and casting away from said grate.

6. A mold shake-out apparatus comprising a grate having transversely extending bars with substantially flush upper edges for supporting a mold section containing a casting, certain of said bars being provided with vertical slots having open upper ends, means for shaking said grate, a rockable device supported independently of said grate and having arms normally extending transversely of said grate within the slots and below the upper edges of said bars and means for swinging said rockable device in a direction raising said arms and lifting the mold section and casting away from said grate.

IVHCHAEL H. KELLY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,069,795 Lewis Aug. 12, 1913 1,460,085 Watson June 26, 1923 1,768,233 Carman June 24, 1930 2,020,131 Behnke Nov. 5, 1935 2,160,581 Behnke May 30. 1939 2,431,174 Henry Nov. 18, 1947 2,466,650 Walker et al Apr. 5, 1949

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