US1623257A - Molding machine - Google Patents

Description

p 1927' N. LlTTELL MOLDING MACHINE Filed June 6, 3.924

3 Sheets-Sheet l I N V EN TOR. J71? 504/ ,z; 0722 L f A mama TORNEYS.

April 5,1927.

N. LITTELL MOLDING MACHINE Filed June 6} 1924 W 5 Sheets-Sheet 2 w: .r k y 1N VEN TOR.

40 r b w m L M M April 5, 1927.

N. LITTELL MOLDING MACHINE Filed June 6, 1924 3 sheets-sheets Patented Apr. s, iszi".

mason LITTELL, or nnoontvn, new some.

MOLDIHG Q Application flied June 6,

This invention relates to molding apperuins of the type in which the sand is forcibly projected into the flask to form the mold.

' in machinesof this type it is important to the gib and havingthe projector head at the other end, the two pivots Qvnng the desired flexibility of movement. Vith this type of machine it is necessary to feed sand. tothe machine at a point over the axis of the swinging rib and thence convey it along the gib to elpoin t over the arm pivot and thence along the arm to the projector head, and to prov de separate conveying means along the gib and along the arm.

"It is one of the objects of this invention to simplify the construction'of machines of this type bysubstituting, a pivot and a slide ,for tli-etwo pivots. of the prior machines. the

beam or beams supporting the delivery end ofthe ma-ch ne'being mounted so they can he slid hack and forth ontheslide and swung laterally from side to side on the pivot to secure the desired universal movement. I

Another object of the invention is to feed the send to the machine-at a point over the .ivot and convey it outwardly. along the v c 1 lieiunsof the machine to the dchveryend. in such a wayaste use only one conveying means. A further and very ini 'iortant feature of this invention is the provision of a unitary means for conveyingthe sand from over the pivot point, where it is fed to the mochine, to the delivery end of the machine and there, bv the aid of a deflector, hurling it downwardly into the flask with suiiicient force to pack thesame. In this way the construction of the delivery end of the machine is simplified and the expensive pro-.

jectorhead'uSed on prior machines of this kind is'entirely dispensed with. j Various other objectsand advantages will appear as the description of the invention proceeds.

A Referring now to the drawin s. "which illustrate preferred forms of embo iment' ofthe invention:

Fig. 1 is a side elevation-of one embodi-v ment of the machine with parts broken awe Fig. is a sectional view of the pivot on the line 2-2 of Fig. 1.

Big. 3 is a sectional view through one of the slides taken on the line 3--3"'of Fig. 2.

F ig. leis a plan view of the machine with v the sand hopper removed. Fig. 5 isan elevation of the adjustable pulley bearings.

Fig. 6 is a plan view of part of the belt driving mechanism,

Fig. 7 is an elevation of the belt driving mechanism.

Fig. 8 is aside elevation of another form of embodiment oi. the invention.

Fin. 9 is a, sectional view on the line 9--9 OfFlg. 8. I

Fig. 10 is a partial section on the line 10-'-1O of Figure 8, in which a further modification is shown.

Fig. 11 is a perspective view of the deflector.

Fig. 12 is a detail view of the seminal...

In the embodiment illustrated in Figs. v1 I to 7 the machine is sup orted upon a mast 1 which rests upon the cor of the foundry. At'its upper end the most 1 supports a pivot 2 which carries a pair of uides 3 through which the beams 4 are slidable back and forth as illustrated in the dash line position in Fig. 1.

At one end the beams 4 carry a pro-'- jector 5, which may be of similar-construction to the projector disclosed in the U. S.

PatentNo. 1,335,642, issued March 30, 1920, and at the other end a. motor 13 is provided by which the rotor of the projector is driven through the motor shaft '14..

To supply sand to the rojector the beams 4.- are provided near eaci end with pulleys H and 8" aro'nnd'which the belt 9 travels to carry the sand from the hopper 10. Sup orted upon stays 12 over the pivot 2,-to the projector.

The pulley 8 is adjust'ably mounted in the brackets 7, which are provided with guides;

25 alon which the bearing blocks 26,-for.

.the pulley shaft 27, are adjustable under the influence oi the screws 28. The screws stations Carries it spurear 31 which meshes with a gear 24 upon t h'e outer end of the shaft of pulley 8, the ratio between- gears 24 and 31 heingeuch as to drive the pulley 8 and belt 9 at the proper speed,

To facilitate swinging the beams 4 and the projector head about the pivot 2, the pivot ismounted upon'roller bearings 19 v and ball bearings 20 carried in the annular ballraces upon the face of the plates '29 iisgilluStrated in Fig. 2. A shield .21

projects downward from the upper plate to keep sand from entering between the plates and g ettin into the bearings The, ides, 3 d1 i i-re Slldflible back and forth are also provided with .-.-roller bearings 22 to reduce friction and the underneath part of beams 4 may be provided with replaceable wear plates 32"byfW'l1lPl1 the wear between the beams 4' and the guides 3 can be periodically'taken up,

Support-11g arms v23 are provided, for

-holdii1g the projector head on the end of the beams and braces 18 keepfthe beams properly spaced at the ends, the guides 3 being spucedby the braces-Se. Each of the- braces 18 and 34. are shaped so as to permit the shaft 14 to pass therethrough.

In operation, the sun? is fed into the hopper lOand' passes through the opening 11 onto the belt 9 which carries it in a continuous-stream outwardly along; the beams and. into the progector' casing 53 where the rotor severe the incoming stream into Wade and hurls them downward into the flask asdescribedin the said Patent, No. 1,385,642., The projector head is moved over all parts of the .flaslt' by sliding the beamed backs-11d forth in the guides files i'llustrated in'the dash line position in Fig- I one 1 itndbyswinging the. head laterally 'i romside'to side around the pivot 2.

In the embodiment illustrated in Figures 8 to 11 the must .1 carries a similar pivot- 2- comprising the annularplstes 29,- ball' bearlugs 20 end roller bearings 19. in .this

1nodification,. however, the guides 3 ere Spaced from the upper plate 29 by the spacing elements 35 so as to permit one lap of the belt 36 to pass between the braces 34 and the )lateZQ. In this modification the "pulleys I: and 37* are curriedv in the ends of the beams 1 4, the pulley 37 being adjustable to keep the belt 36 taut by means essee? Y rough which the beams may be driven by a motor in which the field or armature rotates around a stationmy core, the belt being carried directly upon the rotating 'casin illustrated in Fig. 10, wierei'n the stationary shaft 40 of the core of the'motor is I carried in the beams 4 and the casing 41 carrying the belt 36 rotates upon suitable hearings on the shaft 40.

The belt 36 is provided at suitable intervale with buckets 42 which carry the wads V of sand from the pp to the pulley 37 and there, by the aid of the deflector 43, hurl them downward into-the flask. It is of course understood that the belt is rotated at suflic-iently high speed to catch the sand 'into the buckets 42 in wads and to hurl the wads downward with suilicient force to pack the same densely enough for metal founding. v

To prevent the sand from bein hurled oil the belt before it reaches the discharge end of the'deflector, the hopper 10 is provided with an outwardly extending shield 44 which covers the top and projects downward over the sides of' the belt as at 4'5. The. deflector 43 also carries a shield 46 which slides within the shieldv 44 so asto cover the belt in all positions of the machine. In the operation sand is fed into the be per 10 and carried outwardly 'to the pul ey 37 where it is hurled downwardinto. the flask. To secure the desireduniversal movement for the projecting end of the machine over the flask the head is moved back and forth by sliding the beams l in the guides 3 and is swung from side to side around the pivot 2 as in the embodiment of Figures 1 to 7.

Figure 12 illustrates an alternative form of bucket or impeller for the'belt 3B, which comprises straight or substantially straight projections 47 on the surface of the belt in front ol. which the sand is formed into weds by the compuctor 48 which comprises H5 a'paddle or blade 48 swung from the pivot 4-8 above the belt 36 so as to dragon the belt and compact the sand against the im- 'pellers l? but which if free to slide over the top of the impellers ii. A. weight or spring I? may be provided for urging the blade 48 into contact with the belt 36 if desired. In compliance with the patent statutes, I have illustrated and. described a preferred embodiment of my invention but it is to be understood that various modifications and changes cun be made therein without departing from the spirit of the invention or y, the scope of the appended claims.

l claim: 30

of the motor as of this embodiment the loo v I said projector.

- scribed a vertica --support, a pivot a reams? 'scribed, a projector, means to operate the projector, a. supporting mast, a pivot and a slide supported unsold-mast, means extending through said slide and slidable therein for supporting" the projector and nieansfor conveying sand or other molding; material from over said pivot, to the projector. I 7

2.131 a moldin'g'machine of the type described, alsupporting mast, a pivot, and a slide su ported on said mast, beams projec'ting t rough said slide andsl'idable therein, 'a projector at one end of the beams, means supported by the beams for driving the projector, and a conveyor supported by said beams for conveying the molding material to said projector.

3; In a molding machine of the type de-' scribed, means for throwing ity to pack the same, means to support the throwing means, means. to permit turning oil-the throwing means around said support as a pivot, means to permit said throwing means tob'enioved in ahorizontal plane toward and; away from said supporting means, means to convey' molding material from over said supporting means to said throwing, means, means on the opposite side of said supportingmeans to drive said throwing means, and a driving connection between said drive and throwing means. 4. In a moldinginach'ine of the. type described, a support, a pivot adapted to turn about said support, a slide on said pivot, supporting means projecting through said slide, a projcctorat one end of said supporting-means, a belt conveyor for conveying the j-molding material from over said pivotio the projector, and power means to operate said machine.

5, In a moldin" machine. of the ty )e dedapted to turn about said support, a pair of slides 'onf'said -pivot,.a pair of beams extending through said slides, a. projector carried at one end of said beams, a conveyor for conve'ying. molding' material from over said pivot-to said projector and means to drive.

6. In a molding machine of the type described a vertical support, apivot ada ted to turn about said support, a pair of s ides on saidpivot, a'j pair of beams slidable through said slides, a deflector at one end of said beams, a belt conveyorsupported on said beams, a plurality of buckets'on said belt and1ncans to drive said belt to convey molding. material from over said pivot to the end of said beams and there. by the aid oi? said deflector-r to hurl the moldin material downward into. a-flask with sui'licient velocity to pack same'densely enough for molding purposes. a

I I the molding -rnaterial into the flask with sutlicient veloc- 7. In a molding machine of the type doscribed, a main support, a pivot supported thereby, a slide onsaid. pivot, a horizontal I projecting support, mounted in and slidable through said slide, whereby. said horizontal projecting support may have universal movement ina horizontal plane about said pivot as an axis, a conveyor for conveying the molding'matcrial from over-said pivot along said horizontal projecting support to a point remote from said axis and means for projecting the. moldingmaterial down.- ward from said point remote 'from said axisunder sutlicient velocity topack same into the flask. v f

8. In a molding machine of the type described, a pivot and a slide, a pairof beams projgcting through said slide, and adapted to turned about said pivot and moved 83 back and forth in said slide, a deflector supported by said beams and spaced from said pivot, an endless belt conveyor supported by and movable with said beams for convey ing molding material from over said pivot to said deflector, a plurality of buckets on said conveyor and means 'to drive the conveyor with suilicient velocity to hurl. the

molding material downward from said dc tlcctor with suilicient velocity to same densely into a molding iiaslr.

9.111 n. molding machine of the type, (la-[- scribed, a pivotaud a slide, a pair of beams projecting through-said slide, and adapted to be turned about said pivot and movedbaclr and forth in said slide, a deflector supported by said beams and spaced from said park the 'pivot, an endless-belt conveyor supported by and movable with said beams, for conveying molding material vto said deflector, a plurality of buckets on said conveyor means to compact the molding material into wads and means to drive the conveyor, to hurl the moldinw i'naterial downward from said deflector with sufficient velocity to puck'tbe samedensely into a molding flask.

10; In a molding machine oi the type described, a pivot and a slide. a pair oi beams projecting substantially horizontally through saidslide and adapted to be turned about said. pivot and moved back and forth throu h said slide, a pair of pulleys supporte by said beams on opposite sides of pivot, a deflector over one-0i said pul' leys and moved therefrom, a substantially horizontal belt conveyor extending over said pulleys, impellers on said conveyor, means to deliver molding material to the machine over said pivot and means to drive said conveyor to convey said molding material from the point of delivery to said deflector and there, by the aid oi said deflector hurl, it downward into the flask. I

11. In a molding machine of the type. described, a pivot and a slide, a pair of, beams projecting substantially horizontally through said slide and adopted to he turned aboutsaid pivot and moved hack and forth through said slide, a pair of pulleys supported by said beams on OP'DOBlliB Sides of said pivot, 21 qiuuh'unt shaped deflector over one of said pulleys and spaced tl'lerefi'om, means toodjnst one of said pulleys toward and away from the other pulley, a substzmtially l'mrizontal helt conveyorextending over said pullers, impellers on said convoj'or, means to deliver molding material to the machine over said pivot, and means between the pivot and said deflector to drive said conveyor to convey said molding material fromthe point of (:lelivery to said deflector and. there, by the aid of said deflector hurl, it downward into the flask.

12.. In a molding machine of the type described, a pivot and a slide, a pair of beams projecting substantially horizontally through: said slide and ndaptedto be turned about said ivotfnnd moved back and tlorth through said slide, a pulley supported by 'sa'id-fl beams ,at one side of said pivot, a motor-with a rotating: casing supported by saidlieiin'is at .theother side of said pivot,

' v adefiectorovcrsaid pulley and said motor casing and impellers on said conveyor.

13. In it molding,nnichme oi: the type described, a pivot and a slide. a pair oi booms projecting substantially horizontally thrmiglisnid' slide and adapted to he turned about said pivot and moved back and forth throu h said. slide,a pulley supported hy cams at one side of said pivot, a motor with a rotating casing supported by said beams, at the other side of said pivot, .a Y deflector over said motor casing and spaced therefrom, av belt conveyor extending over said pulley and said motor casing, impellers on said conveyor means to pack the molding material against said impellcrsand jmcans to enclose said. conveyor ctwecn said pivot and said deflector.

14. Ina molding machine oi the type described, a. pivot and a slide, means to support. adef ector for universal movement in a horizontal phme about said pivot as an axis, means to deliver 'inolding material to said machine over said pivot and single means to convey said molding;- material from tlie point of delivery to said deflector in all ositions of the same, and -:tor there hurling the sanddownward into the molding flaskwitlrsnilioient velocity to pack some densely enough for metal founding.

--15. In a molding machine of the type described, a pivot and a slide, means to mower support a deflector for universal movement in a horizontal plane about said plVOUilI-i an axis, means to deliver molding material .to

said machine, single means to convey said through said Slltle, a projector supported;

at one end of said horizontal supportimr' means, a motor supported at the other exit of said horizontal supporting means, means extending between said motor and said profor conveying molding material from over said pivot to said projector.

17. In a machine of the type described, a

main supporting means, a pivot and a slide, a ,horizol'ital supporting moans extending through said slide. a projector supported at one end of said horizontal su 'iporting means,

:i motor supported at the other end of said horizontal su 'iporting means, a motor shaft extending between said motor and said projector for driving said projector, means for conveying molding material from over said pivot to said projector, and means for driving: said convcvor from said. motor shaft.

lt'l. in a machine. of the type described,- a main supporting; means, a pivot and a slide supported thereby, ajhorizontal supporting means extending through said slide and ex? tending outward at opposite sides of said pivot, a projector supported at one end of said horizontal supporting means, a motor for driving said projector, and means .for convc 'ing molding inat-crial from over said pivot to said projector.

19. In a moldingmachine of thetype describerhn supporting mast, means for supporting a PIOJGCtOI' for pivotal movement about said most, and for straight line movement. toward and away from said mast, said supporting means being supported on and above sald mast whereby to support said projection in approximately the hor-i-' zontal plane of the top of said mast,'means for driving said projector, and means for conveying molding material from over said mast to said pro ector,

In testimony whereof I have atlixed my signature to this specification.

Nntson LITTELL.

cctor for driving said projector, and means

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