US1708646A

US1708646A - zlatnik

Info

Publication number: US1708646A
Authority: US
Publication date: 1929-04-09
Anticipated expiration: 1946-04-09

Description

April 9, 1929. F. zLATNlK 1,708,646

SECTIONL MOLD Filed May 2, 1928 5 Sheetsesheetml Patented Apr. 9, 1929.

PATENT OFFICE.

FRANK ZLATNIK, F GLOBE, ARZONA, ASSIGNOR TO GLOBE FOUNDRY 6c MACHINE CO.,.0F GLOBE, ARZONA, ACORPORATION'OF ARIZONA.

SECTIONAL MoLn 'i t.

kApplication filed May 2, 1928. SerialrNo. 274,466.

My invention pertains to sectional molds of metal suitable for making chill castings of a type suitable for liners for rod andball mills.

To a certain extent it has been the practice in making cast articles in chill molds formed of metal and in making such articles such as liners for rod and ball mills, to have the mold made in sometimes two and sometimes three parts. rlhe top and bottom of the mold in such cases usually have integral side or end walls which interit. structions it is customary. to have a separate piece forming a closure for one of the open ends for either the" base or top or cover section of the mold. A disadvantage ot such type of mold is that when the mol-d warps' or cracks that a large portion of it has `to be discarded; as for instance, the whole ofi the base or the whole of the top or cover section must be discarded, this causing considerable expense in replacement. A disadvantage of such types of molds is in their uneven structure. rlhey warpandcrack due to the unequal strains set up in some parts of the mol-d, causing considerable expense in replacement. f

An object of my invention is to construct a mold suitable 'for n'ialring chill castings such as liners for rod and ball mills or the like, and to have such mold made in sections; for instance, it may be considered that I have a separate base and top or cover section and with these l utilize wall pieces which are formed to tit in the side walls ot the base and. top, thus in client making a complete mold, the parts being held together in a suitable manner.

A. further object of my invention 'is in hingingthe top or cover to one ci" the removable Y side walls and securing all or some of the side walls in place with Wedges.

l further object ot' my invention is the cone struction ot a removable gate, this having a sliding shutter which formsV in etlect part of the Vside wall on one side of the mold, this gate being designed to rest upon a recess formed in one ot the side walls.` i

A further object of mv invention the construction of a series of liilers which may be placed in the moldto form articles of a lesser size than the full mold, and in connection with these fillers to have a slidable displacing block which may be utilized to pry the fillers and the finished casting loose.

In some' oit these conf Another object of my invention is constructing a mold so that the gate is the last part litted, thereby allowing inspection of the mold.

in object el my invention is to construct a mold suitable for n'iaking chilled castings, such as liners for rod mills and ball mills or the like, in which all of the parts are simple, durable and cheaply replaced. The construction ol'- my mold is such that each face and angle of the cast is formed by a separate part, whereby there are no unequal strains or distortions set up in the mold, and thereby making a cast true to dimensions.

Myinvention will be more readily understood from the following description and drawings, in which:

Fig. 1 is a plan view of my invention,

Fig. 2 is a side elevation taken in the direction of the arrow -2 of Fig. 1,

Fig. 3 is a vertical cross section on the line 3 3 oi Fig. 1 in the direction of the arrows,

Fig. 4 is a vertical cross section of Fig. 1 on the line 1-44 in the direction ofthe arrows,

Fig. 5 is a plan of the base,

. i Fig, 6 is a perspective View of one of' the side wall pieces, v

Fig. 7 is a view of another side wall piece for supporting the gate,

Fig. 8 is a side wall piece forming the hinge connection for the cover,

Fig. 9 is a sit wall piece to be utilized opposite the piece of Fig.` 8,

Fig. 10 is a perspective view the main part of the gate,

. .F l1 is a perspective viewof the sliding shutter for the gate,

F ig. 12 is a perspective view of a. form of liner which may be cast inmy mold,

Fig. 13 is a perspective view of a moldliller block, 1 3

Fig. 14E is a plan view` of a modification showing a different manner of hinging the top or cover.

ln my invention Jthe base is designated by the numeral 11.. This may be considered as having end edges 12, side edges 13, an exterior'surliace 14 and an interior surface 15. ln the construction illustrated the interior surface has a `llat edge 16 at each side,

`and is dished downwardly toward the center as indicated at 17 in Fig. 3.

Extending outwardly from the sides there are two pairof end lugs 18 and two pair of side lugs 19, each of these lugs being provided with a verticalpin 2() and two of the lugs on one side and two of the lugs on one end are provided with bolt holes 21.V lt will be noted that the upper surface y22 of Vthese lugs is below the latsnrtaceA 16 at the ends oi:

lustrated as llat, having a rabbet 28 to ac'- eonnnodate the 'edge of the cover as hereunder set lorth.

This hinge endpiece has a pair ol lugs 29 extending upwardly, such lugs having aper-v Y tures 3Q therethrough through which extends CVD Cif

'insertion lof a prying a hinge pintle 31. In addition, these vend piecesare provided with bolt holes 32. The llanges 33 form a `hinge stop. Y f The Yopposite end piece 34 (illustrated particularly in Fig. 9) alsohas atlat base 35 with downwardly extending bosses 35 `and a 'flat top'36, the base having a rabbet 37 to it over the flat edgeV 16 of the base of the mold and the top snrliace also having arabbet 38 to accommodate the cover et the mold. lt will be noted that the inside tacos 39 of the hinge. end 24 and the end piece'34 are inclined in-V wardlyand upwardly (note Fig. 3) and that the outside surface 40 is vertical and straight.

The side wall section 41 (shown particularly in Fig; 6) h-as'a ilat base 42 with downwardly extending bosses 42 to tit on the lugs 19`at one rside and has a straight and vertical outer surface 43. The top 43 has a rabbet 44 to accommodate the cover as hereunder set liorth. There isw an inwardly extending boss 45 which is vshaped on itsflower edge 46 to conform to the shape of theinside surface 17 the base ot the mold and the top surface 4G is shaped to lit the inside of the cover. The ends 47 are shaped to .nt against the inside faces 39 ot' the hinge end piece 24 and the opposite end piece 34. Y

'lhe'fends oi the side wall 41 havea cut-ont section 48 tor use ot a pry bar in prying thesev sections oli' to open the-mold. This end wall piece isY also provided with bolt holes 49. There is a recess 50 'formed in the boss 45, this having adispln-tceahle wedge block 51, such block having a curved cnt-out section 52 for tool for a `purpose hereunder set lo'rth." j Y I The gate supporting side Wall designated generally by the .numeral 53 (illustrated particularly in 7) is somewhat thegeneral shape of the opposite side wall 41.v This has a flat base 54 with downwardly extending bosses v55 to tit on the vlugs 19 votithe base. This piecehas'a side tace 56 which bears the ends of the

end pieces

24 and 34.

Itis also provided with a boss "5 7 'fitting in a seat l'o'r the gate, extending through this side wall member '53 from the bos's57 to the outer face. A strengthening member is formed below the :base 54 and is designed to tit between the lugs 19. There is also a strengthening sheltl extending outwardly with a retain-v ving clip 62 attached to the outer tace et such shell, thisrbeing adapted Vto hold the gate in place. The upper surface ol the recess 59 is slightly incliii'ed inward-ly and downwardly as indicated at 63 (note F 4).

The 'mold pieces tar described are as-V sembled by placing the base 11 on a suitable lloor and placing' the hinge end piece in place andthe side piece41 in place.

These, it desired, `1nay be 'secured by'bolts passing through the boltholes 32 in the hinge piece 24 and in the lugs 21, 'and the bolt holes 49 in the side piece 41, and the bolt holes 121. lilowever, such bolts are not really necessary and even it bolts are used itis desirable to insert wedges 34*wedgingbetweenthe ver- 'tivcalfpins 2O and the outer faceV of the hinge wall 24 and the side Wa1ll'41 (note Figs. 1 and. 2). The otherwall pieces comprising the end piece '34 and the side piece V53 to accoin modate the gate are then placed in position resting on the

lugs

19 and 18 respectively, and 'these are secured in positionV :by wedges 64.

' Thetop or cover, designated generally by the numeral 65, is formed with an yunder surlace66to contorni to the shape oir' thefarticle being cast; and in the .present instance has a slight convex curve from each side Vforming a reverse 67. This inner face conforms to the shape olf the upper sui-:Face 46` of the boss 45,k At one side thereis a vertical recess 68 which preferably has a vertical iaceV 69 parallel. to the side'liace 70 of the topV and kvertical right-angular faces V71 extending and having openings to lit -on the hinge,`

cut-ont section y79 leaving horiz'ontal'shoul? vders 80.

It will thus be seen that `there is no fined wall for the side of the gate'81 which llits adlof the side wall piece 41.

jacent the mold. The gate is'openat the top as indicated at 82 across its whole measurements. The inside bottom surface 83 of the gate may be sloped as indicated in Fig. 4.

A sliding shutter 84 (illustrated in particular in Fig. 11) is formed of a fiat piece of metal having vertical sidefaces 85 which fit in the faces 71 ofthe cover. One of the faces 86 of the sliding shutter fits against the face 69 of the cover thus forminga close tit. The face 87 fits in the cut-out section of the main portion of the gate against the edges 88.

The shutter has a cut-Out section 89 at the bottom `which leaves'depending legs 90 on each side, such legs resting on the shoulders 80 at the bottom of the cut-out section 79 ot the main portion of the gate. Therel are lateral lugs 91 at the top of the sliding shutter adapted to facilitate insert-ion and removal of such shutter. Before iitting of the gate it is preferable to clamp the base and the cover of the Vmold by engaging a lsuitable clamp underneath the base and on the flattened surface`92 of the cover.

By this construction it will be seen that the mold can be built up with `the base, removable' side walls and the cover hinged to one of said walls, and such cover maybe closed, then the core may be fitted leaving a relatively large opening before fitting of the gate, this opening being in the recess59 in the gate supporting side wall 53. Therefore the operator can examine the interior of the mold and see if it is in proper condition for pouring: The main portion of the gate is then fitted in place and after thisy is properly ipositioned the sliding shutter is thrust downwardly into place, thus forming a eompleteinold. l

The type of liner made by the mold above described is illustrated in Fig. 12, being designated by the numeral 92. `It willbe seen that this has a curved surface 93 which is adapted to conform to the cylindrical shape of a rod or ball mill, and it has end edges 94 at right angles to the curvedsurfacel. The side edges 95 are beveled and the top surface 96 has two convex curves meeting in a ridge 97. The core leaves a hole 98.

In some cases in opening up the mold the cast liner sticks in the mold and if such is the case it may be pried loose byf inserting a Wedging orprying tool in the curved por` tion 52 of the displacing wedge block 51 `and K thrusting this vblock slightly outwardlyfroin the recess 50 in which it fits on the boss 45 It is customary in making liners to have these of two or more different sizes, and to make smaller' sizes than those shown a liller block designated generally by the numeral 99 and shown particularly in Fig. 13, may be inserted. This filler block is illustrated as have ing vertical opposite sides 100 to fit against the face of the boss 45 and to form an inside end wall of the mold. The lower surface 101 is shaped to `conform to the shape of the base of the mold and the top surfacev 102 to conform to the shape of the top of the mold (note Fig. 4). The ends 103 conform to the inside faces 39 of the hinge end wall 24 and the opposite `end wall 34.

In Fig. 14 I illustrate an alternative construction in whieh'the hinge side wall 105 is opposite the wall 106, having a gate 107 therein. In this case the other blocks are made substantially the same as in the figures above described in order to form a mold having the base'and the cover with the four removable sides. u

From the above description it will be noted that a characteristic feature of my invention is that the mold is made np of a multiplicity of parts and that the base and the cover may be considered as substantially iat main sections and that te ce-operate with these and to forni the closed mold there are the two side andtwe end pieces which when held in place and with the gate also in position forma closed Imold. Therefore, if any of these parts become marred in use, warp or crack, it is ing substantially the replacement of the main structural elements of the mold.

Various changes may be made in the principles of my invention `without departing from the spirit thereof, as set forth in the description, drawings and claims.

I claim: y

1. A sectional mold having a base, a cover, a series ofremovable side wall pieces, and a gate restingon one of said side wall pieces.

2; A sectional mold having a base, a cover, a series of side wall pieces supporting the cover above the base, said pieces being remov able, and a gate supported by one of said side wall pieces. e

3. A sectionalmold comprising in combination a base, a series of lugs connected thereto, a coveiava series et sectional. walls supported on the lugs and forming a support for the cover, a gate mounted on one of the side walls, and meansV on the lugs to Wedge the lsectional side walls in position. y

` 4. A sectional mold comprising in combi# nation a base, a cover, a scriesof sectional side walls mounted on the base and forming a support for the cover, and a gate mounted on one of the side wall sections, said gate be-V nation a base, a cover, a series of sectional side Walls, at least two of said walls having y an inwardly extending boss forming a support torf the cover and engaging the base, and a gate resting on one of the sectional side walls.

6. A sectional mold as claimed in claim 5,

les

the gate being formed in two parts and having a sliding shutter, said shutter .fitti-ng partly in said recess in. alignment with. the boss.

9. A sectional'mold as claimed in claim 7, two of theend wall sections having a rabbet in the upper edge to engage the cover and kform a support, and having a rabbet adjacent the lower edge to iit on the said base. y

10. A sectional `mold having abase 4with'a plurality of lugs 'extending outwardly from each ofthe sides, a plurality of sectional side Walls each having bosses on the lower surface to'bear on said lugs, pins on the lugs, wedges between the side walls and the pins, and a gate supported .on one off' the sectional side walls. v V .y

ll. A sectional mold as claimed in 10, the sectional sid-e wallsupporting thegate having' a recess from its outer i'ace toits inner face, the gate resting in said recess, means to engage the outer wall of the gate, the said cover having a cut out section and a sliding shutter for the Oate .fittino' in saidcut out section. g

l2. .A .sectional .mold comprising in coiiibi*V nation a base, a cover, a series ofV removable VVside wall sections, one of .said sections forming a hinge connection for the coversaid side wall sections'being mounted on vthe base and forming asupport for the cover, and agate supported on one of the sidewall sections and having an engagement on one side with a cutout section of the cover. y

13. A sectional .mold as claimed in claim 12, the base 'having a* series of lugs extending outwardly thereiirom, the side wallsections beingsupported on the lugs, pins on the lugs, and wedges-iitted between 'the` pins and the side wall sections. Y 1. 14T. A sectional mold-comprising in coinbination a base, a'- plurality voit :sectional side walls detachably mounted on the base, a cover hinged to one of said .side walls, said cover being supported onsaid walls, the .base .having a recess thereinand the cover having an opening, a core fitted in the opening oi' `the cover and engaging the recess ofthe base, one

Y of said side walls having a recess from its outer to its inner face leaving a large openblock mounted therein, said block having.

means to engage saine with a prying. tool to separate a casting from a mold.

16. In a sectional'inold a base,a cover, .a plurality ort sectional side walls mounted on the base and forming a supportfor vthe cover, one of said side walls having a boss with a recess, a slidable wedge block mounted in the said recess and having ineans to engageV aprying tool therewith, and aiiller block Vpositioned in the mold .adjacenttli'e said boss and adapted to be displaced by lthesaidwedge block in the opening of the mold. y

Y .17. Ina sectional'inold a base, `a cover, .a plurality of lsectional side walls mounted on the base and supporting the coverfone of said sidewalls having a recess from its outer toits inner face forming a large opening for .inspection of the mold, .and a gate formed in two parts, one of said parts having abase,

an outer and two side walls fitted in the said recess and a sliding lshutter:mounted on. the,k

port for the cover,cone of said' walls havinga pair of lugs with apertures therein, a hinge pintle fitted in saidxapertures, hinge armsl on the cover engaging the pintle, and .agate niountedina' recess on one of the side walls and Ahaving' a closure-against one side oit the.

cover. p Y 19. A sectional mold as claimed in claim 18,

tliebase havingfa `recess in its uppersurface`V thecover havingan opening and a tapered.

core iitted in said opening and engaging the said* recess. 1

20. A sectionalfniold comprising nation a base,a cover, and. fourwall 'sections detachably supported on the base and Aforni-- ing asupportftor the cover, one of' said walls in combii having a vrecess with a gate iitted therein and supported on such wall, a pair of the walls having la cut-out section for Vinsertion of a pry` bar to pry -the walls away from the base and` the cover.

V'In testimony whereof I 'have signed myn naine to this sp'ecitication.

'FRANKZLATNIK Y