US2330277A - Multiple-bar, self-dumping mold - Google Patents

Description

Sept. 28, 1943. A. FRlTscHLE 2,330,277

v MULTIPLE-BAR, SELF-DUMPING MOLD l Filed May le, 1942 2 sheets-sheet 1 Sept. 28, 1943. A. FRrrscHLE 2,330,277

MULTIPLE-BAR, sELF-DMPING MOLD Filed May 16, 1942 2 Sheets-Sheet 2 mmmmm m m I INVENTOR,

Patented Sept. 28, 1943*A MULTIPLE-BASE,"SELF-DUMPING Morin; n l

l `lilqfjhimf"rjr'ifshie, tiniversiry city; Liq.; magno Jersey l This invention relates in generalize molds morepar-ticulaly to a moldf castingY'- ,`1'1n.a .l l A irlgots of such metalsA as babbitt, A.type metal? solder and the like. vg In theV commercial manufacture of such V1 gots, it isk customary to use open-tom; multicavity yrnoldh-s anclto use the same mold-to cast different kinds ,of metals. It isgcustomary toprovicle'removable name plates `inthe molds recast-different names into theingots ofsthe different metals. VIt Vis customary tomakesuch -mo1'ds; in twogsections `seoi1reol together by machine bolts; which sectionsare not separablev for the `purpose-of dumping the. mold, )out v.must `he *separated for the; purpose y(1f-changing name plates.-- Considel erable diiicu'lty isfenfcountereddn changingpthe namelplates becausei-n' use thefnam'e plates and the .meld sections i becomwbattered ,and deformed; Considerable[diilicultyis also encountered in: ree ,moving-.the cast ingots from the molds` for ithe same reason. According lto thelpresent invention, a ,separableftwo-section mold isprovidedi overcoming th above disadvantages and having vvmany additional advantages. Briefly; 'the new mold; according toa particular embodiment of the invention,

comprises a lower section orv Water b'oshhaving anat surface constituting a chill plate."fThe" removable -name plate is 'secu-red `within al cavity inthe chill plate surface. VThe' upper section "comprises aperfor'ate platelike member-'have ing `a i plural-'ity jof mold cavities 'extending' `entirely' Ythrough the section. hinge" construction is provided'v connecting the two sections y'along one yerige Aand a suitable dis engagab-le-clam'ping arrangement is providedgto connectfthe sections along fthe 'opposite' edge. Thus,- 4after thel metalz is cast, `the clampingar'- rangem'lent maybe disengag clandtheuppfer sec-r tion may be raisecl'and swung around 'its hinge tolurnp the metal bars from the mold.` 1

' The invention also consistsin certainnew and original features of construction and combinations' o f partis' herein'after set forthr and claimed.

Although the novel features' which are believed to be characteristic of thisinvention Willb'e 'pare tiuia'rly minted Guam, the, claims appended heretofthe invention itself, as toits objectsland advantages, andlthe manner in which it may be carried out, may bebetter understood b y referring to the following y"description taken in connection' with the accompanying'drawings forming a part thereof; in Which,y l

Fig. I is a plan view. of the new` mold;

Fig. 2"is'ja vertical. transverse sectiontaken on me line 2 2 of'Fig;

3 is a front' elevation of the .mol fl;

4 is, a horizontalisection taken on the line A suitableV spring Fig aillu'st'rats :arnold stan and arrangement." f 1. I ikerefe'rence characters ehotel the 'several figures of thev dravvin In thefollovvlng description, an

generic in theirV application as ari-.Will permit Referring nov/ to -the lr'awings, thernold comlaandhack wail' 'Mfybottofm wail island attico wall 18j. forming a plate.- The. .Water l,bush maybe gsutably'welded .to a. base plate l .which may resten any suitablel support asafor, example,

A jplurality Vof name blates. Ztl/.are remoyably mounted in .these recesses.` `l he individual platesfpreferablyhave straight parallel-side walls j a beveled .end 41Va1l, 22 .adapted discs-e Fig; l 12d-ht under e Cerrespeeeiee@overbrengingffend Wall oi-it's recess-I9 (see 4Fig. .2\),. 'Iherearend of each nameplate 'issteppedloif'to provide la t() n gage'overvztheheadl-of :a suitable' 1y in Figs. I and 2. I The indivdualnarne-plates .2u may .havesuitably. 'raised.congurationsgor depressed, .congurationsyindicated- -by 64,e,-sof

that the t1-adel name or otherdescriptivematter may `he'jcast onto thefnished i-ngct,` Name plates havingthe same names or-fname :plates shaving l diierent names may be -used together'inthe same platesa singlelargerecess maybe yprovided andA a ys iri'gle. name 'plate .may be providedY for SaV- plua rality' of ingots. The `single-name plate may have a plurality1 of thesame trade names cria .mural--y ityof different trade-names asdjesiredw Theisin@ gie largename plate mayfbenhelddown--by a hevelegijedge on. the fron-t sident-fthe mold-and .by screws on the rear .side-of; themold` andmay have straight Aper@endicula-r-sicies as infthe' smaller individual name plates.

frog-,t weibl@Show-M .thebaek wan #174l asian-ii catedI moreparticiil-arly ein rFigs@ '4 3,111,110.51 :The

baliles 34 alternate with the baffles 24 and project downwardly fromV the top wall .|,8 short of the is pivoted to links 48 by pins 5| passing through hnks 48 and screwed into drum 49. A handle 50 is secured to eccentric drum 49. Flaring mold guides 54 are suitably connected to the bosh I0 to guidevthe upper section 21 and hold it in register.

- `To promote more efiicient use of the mold, the

arrangement `shown in Fig. 8 may be provided.

it passes back and forth lengthwise of the baiiles Y.

24 and 34 to outlet 26. At the same time a certain amount of water passes over the baffles 24 and under the baiiles 34. The .baille plates or ns may be either cast into the iwater'bosh in the case of an iron casting, or they may be made of steel platewelded into proper position in case the bosh is s'o made. It will be noted that these fins arernot only staggered as between front and backwalls but are also staggered as between top and bottom walls. j

`'lhe'u'pper mold section 21 comprises a gen-` erally iiat steel plate having a back wall 28, a front wall 29,l side or end walls 30 and partitions 3| forming a plurality of mold cavities` 33 corresponding tothe several name' plates. The mold cavities have ,tapered side surfaces 32 on all `sides tow-facilitate removal of thev ingots when cast. The end walls 35 and the partitions 3| are thickerredl toward,their` middles to minimize difi'icul tiesfrom expansion and contraction.l

A,The `upper section 21,A maybe made of either castA iron or steel, but ,in'either case there may be a tendency `for this plate towarp or bend upwardly toward the center rather thanat the front and back, since these points are clamped downagain'st thewater bosh. 'It is obvious that this warping should be Yguarded against sincejany metal running between the mold `sections would cause iins which would delay removal of the inf gots from the mold. Thus, reinforcing ribs running'from front tok back of the mold section will minimizenwarping or bending diculties.

The hinge construction for connecting the sections lll and 21 comprises a Series of eye bolts 35 passing snuglylthrough sleeves 36 suitably secured to base plate ,|6. A plurality of helical springs 39 surrounds bolts 35 andyacts between the`,under side of plate 6 ,and washers 31 held infplace by nuts 38. The screwingmof nuts 38 on bolts 35 serves Ato adjust the tension' of springs 39. A plurality'of washers 40 surrounds bolts 35 above sleeves 36. I i The mold section 21 has a plurality of integral lugs 4| through Which a bolt 42 passes, this bolt constituting the pintle for the hinge. This bolt`42 also passes through the eyes 440i' the eye bolts 35 'anda nut 43 is threaded on pintle 42 to hold the hingle assembled.`

It will be understood that, whilethe eye bolts 35 -t snugly in the sleeves 36,"they are free to move up andY down. The Vclose engagement of thev end eyes 44 with the end lugs 4| xes the lateral position of theupper section 21. on the lower section I insuring proper register of these sections when they are clamped together for the molding operation. At the same time, the springs 39 help hold the sections togetherwith the proper clamping pressure.

For:holding the sections together on the other side of the mold, a disengageable clamping device isprovided; `A vplurality of snubbing lugs 46 are mounted on the bosh l0 and a pluralityv of lugs '41 are secured to the upper section 21. Links 48 are pivoted to lugs 41 by pivot screws53 passing through links 48 and screwed into the lugs 41. A11 eccentric drum w49 having ai cam Surface 52 Here a dumping frame, indicated in general by 60, is yconnected to the table I1 by a series of hooks 63 on the frame 60 overlying hook 62 on the table |1. A box truck 6| may be wheeled under frame 60 in such position that, when the upper section 21 is moved to the dumping position shown in Fig. 8, the ingots will fall directly into the dump truck 6|. rThe front side ofthe upper section 21 may fall against the dumping frame 60, as indicated, to help jar loose theingots.

In operation, to prepare the mold for casting afterthe previously cast ingots are dumped, the top section is swungfrom the dumping position, indicated in Fig. 8, to the casting position indi` cated in Figs. 1 and 2. The drumv 49 is engaged under lugs '46 and the handle 50 pressed downwardly to snub the cam surface 52 against lugs 46. The pressure exerted by the eccentric engagement onthe one side, andthat exerted by the springs 39 on the other, tightly engage the two sections 21Vand l0 together. The molten metal is then poured into'the mold through the open tops of the mold cavities 33 by a suitable pouring apparatus as, for example, a, ladle (not shown), the molten metal being rbrought flush with the top of the front and back walls 28, 29. After the metal solidies, the handle 50 is'raised and the eccentric drum 49 disengaged from lugs 46 and the entire top section, carrying its cast ingots, is swung to the dumping position shown in Fig.-8 where the impact yof the top section falling against the dumping frame E0 helps dislodge the ingots 55 causing them to drop into box 5|. v

Due to the iiaring walls 32 and to the tight contact between mold sections throughout their entire lextent preventing the formation of fins, the individual ingots or bars will fall out very readily when swung to the position of Fig. 18. If they do not, va slight tapping on the underside of the ingots-(their top side when the top section is in dumping position) will` cause the ingots'easily to fallout of the mold into a suitable receptacle. The mold is then ready to be clamped together again for an additional pouring operation.

When it is desired to change one or more oi" the name plates 2U as, for example, to cast a difierent metal, it is only necessary` to move the upper mold section 21 to the dumping position and `then remove the few screws, 2| and take out the one ormore name plates 20 andinsert the, new name plates.,

Thus, a `'mold is provided which is easy to use, the cast ingots can be `easily removed without. any troublesome sticking and the name plates can be easily replaced for different metals. Such a mold is particularly advantageous for casting various white metals and alloys as, for example, type metal, solder, antimonial lead,.babbit, etc. This mold is of great advantage where many different brands of' ingots are` to be ,cast from a limited number of molds. Otherwise, a different mold would be required for each brand.

Since the ingots do not stick in the molds and since it is easy to remove and replace thename plates, it is not necessary to hammer the mold sections with hard blows and, hence, they are not f deformed. Consequently, no trouble is caused by vthe molten metal seeping. in between the top and bottom sections or under the name plate land anchoring the cast bars.

Increased production is also obtained since the bars are dumped automatically after each suc-` cessive casting merely by swinging the mold open;

t `Less eiort is required on thedpart of the worki men since it is only necessary to swing the upper mold section (which acts as a skeleton carrier for the cast bars), the heavy water jacket or bosh remaining fixed throughout the entire operation.

The present mold is less expensive to make in that the lower section, being permanently mounted, can be made somewhatlighter and cheaper and the fact'that all of the cooling is appliedto the lower section, no special cooling means is surrounding said rods between said lower section and said abutments, eyes secured to ysaid rods, said -upper section having lugs, a pintle passing through said eyes and said lugs forming a hinge, snubbing lugs secured to said lower section, links pivoted to said upper section, an eccentric drum pivoted to said links, a handle secured to said drum whereby rotation of said drumtightens the engagement between said sections. 2. In a mold, rst and second sections, a plurality of guides secured to said iirst section, rods* slidably mounted in said guides, abutments on said rods, springs surrounding said rods between said first section and said abutments, eyes secured to said rods, said second Isection having lugs, a pintle passing through said eyes and said lugs forming a hinge, snubbing lugs secured to said rst section, links pivoted to said second section, an eccentric drum pivoted to said links, a handle secured to said drum, whereby rotation of said drum tightens the engagement between said sections.

3. In a multiple-bar,,self-dumping mold for casting babbitt, type metal and the like, a lower section comprising a hollow water bosh having' a substantially flat top wall provided with a shallow recess, a` name plate in said recess, means for circulating a cooling iluid through said hollow water bosh, an upper section comprising a comparatively thin skeleton-like member having a plurality of mold cavities extending entirely through the section separated by partitions, the side walls of the mold cavities flaring upwardly, hinge means connecting said mold sections along one wall and a clamping device connecting said mold sections along the other wall.

4. Ina mold for casting material, a lower section comprising a hollow bosh having a substantially flat top wall provided with a shallow recess, a name plate in said recess, means for circulating a cooling iiuid through said hollow bosh,

an upper section having a mold cavity extending entirelyvk through the section, v the side wallsvof kthemold cavity flaring upwardly, hinge means v connecting said mold sections v along onewall and a'clamping device connecting said mold sections,

along the other Wall.

5. In a two-part mold, a lower sectiony com-l prising a hollowA Water bosh having top-and bottom walls connectedby side Walls, alternating upperand lower fbafllesin said bosh, said upper baies extending downwardly from said top wall short of said bottom wall, said lower bailies extending upwardly from said bottomwall shortof said top wall, said upper bailles also extending from a iirst of said sidewalls short of the oppo- `site side wall,A saidlowenbales'extending from said opposite side wall short of' said firstside wall,` inlet and outlet conduits connected to said `water boshA at opposite ,sides thereof, whereby to cause circulatingl water to pass through the bosh back and forth lengthwise ofsaid baflies and over and under said bales, and an upper mold lsection cooperating with said lower section.v

6. In Va two-part ingot molda lower section constituting a chill plate, uid means for cooling said lower section, an Yupper section comprising a comparatively thin, skeleton-like member adapted to rest on saidpchill plate and having a plurality of open-top mold cavities extending entirely through the section, said chill plate forming the bottom of the mold when the sections are togethexyhinge means connecting ysaid sections along one edge, the hinge axis being parallel to theplane of the chill plate, means for swinging said upper section away from said lower section after the metal is cast whereby the cast ingots may be jarred loose from said upper vsection through vthe top open face thereof.

7. In a two-part ingotmold, a lower section constituting a chill plate, fluid means for cooling said lower section, an upper section comprising a comparatively thin, skeleton-like member adapted to restonsaid chill plate, said upper section having a back wall, a front wall, side walls connecting said back and front walls, par-l titions connecting saidfback `and front walls and disposed between said side walls, said walls forming avplurality of open-top mold cavities extending entirely through :the section, said chill plate forming the' bottom of the moldwhen the sections arer together, hinge means connecting said sections'at said back wall, a removableclamping device connecting said sections at said front wall, saidend ywalls and partitions beingverti- Y cally'thickened intermediate their lengths to ininimize warping ofthe upper section.

8. In a mold for casting ingots, a lower sec-v tion comprising a hollow bosh having a substantially flat top wall provided'with a shallow recess, said recess having one wall thereof un-I dercut, a four-sided name plate seated in said recess and having one side portion seating under said undercut wall, said name plate having on its opposite side a recessed portion, a screw having a head engaging over said recessed portion and threaded into said top wall, said nameplate being liftable out of the top face of said recess upon disengagement of said screw with said name plate, a removable upper sectionhavingk a mold cavity whose bottom wall is formed by said name plate, and means for removablyvclampingy said .sections together.

' FRITSCHLE.`

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