US1615025A - Bead-building machine - Google Patents

Description

Jan. 18,1927. l11615925 A. H. MARIETTA BEAD'BUILDING MCHINE Filed Dec. 22. 1920 4 Sheets-Sheet 1 Jan. 18,1927. 1,615,025

A. H. MARIETTA BEAD AHummm MACHINE Filed Dec. 22, 1920 4 sheets-sheet 2 1Z0/101750 HMM/dn @w @a/M I Jan. 18,1927. l 1,615,025

A. H. MARIETTA BEAD BUILDING MACHINE Filed De. 22, 1920 4 Sheet-Sheet 3 Jan. 18,1927. 1,615,025 A A. H. MARIETTA BEAD BUILDING MACHINE Filed Deo. 22. 1920 4 Sheets-Sheet 4 d .y Z294 Rg? mmm Patented Jan. 18, 1927.

y UNITED STATES PATENT OFFICE.

ALPHONSO H. MARIETTA, 0F .iIItOlXy OI-IIO, ASSIGNOR TO THE GOODYEAR TIRE & RUBBER COMPANY, OF AKRON,` OHIO, A CORFOBATION OF OHIO.

BEAD-BUILDING MACHINE.

Application led December 22, 1920.

My invention relates to bead building machines, and it has particular reference to machines for buildin-g composite bead rings of annular form;

The objects and advantages that may be derived from practicing my invention will be apparent from a study of the specification and the appended claims which constitute a portion of this application.

Like symbols of reference indicate like parts in each of the figures of the accompanying drawings;

Figure 1 of which is a side elevational view of a machine embodying my invention;

Figure 2 is an end elevational view, partially in section', of the bead-building portion of the unit shown in Figure 1;

Figure 3 is an end elevational view of the fabric supply rack shown in Figure 1; y

Figure 4 is a top plan view of the supply rack shown in Figure 3;

Figure 5 is anend elevational view of a fabric supply arm of the fabric supply rack shown in Figure 3;

Figures 6 and 7 are sectional elevational views taken substantially on lines 6 6 and .7--7 of Figure 4;

Figure 8 is an enlarged side elevational view partially in section, of one of the bead building tools applied to a partially formed bead ring;

Figure 9 is a sectional view of the bead form or mold and an accompanying partially formed bead ring contained therein and in the process of construction;

.Figure 10 is a cross sectional view of a partially formed bead ring showing` the elements entering into its assembly and their relative positions;

Figure 11 is a .sectional view of a completed bead ring; and

Fig. 12 is an enlarged fragmentary sectional .view showing the application of the positioning roller in the process of building a bead ring.

The machine for practicing my invention, which is shown in Figures 1 and 2 of the drawings, embodies a rotatable table 1() having a bead form or moldring 11 mounted thereon to which the material for building the bead ring, which generally consists of a number of strands of steel wire, a filler material and a fabric covering, is supplied from a supply rack 12. The ma- SeI'ial No. 432,4?5.

terial thus supplied to the bead mold is subsequently molded by means of a positioning tool 13 and a shaping tool 14 that are mounted on a frame 15 which also supports the rotatable table 10. An electric motor 16, or other suitable device, is adapted arbor 19 by means of interposed ball bearing raceways 22 and 23 that are accurately positioned and secured in place by means of an interposed sleeve 24 and a lock nut 25. A master gear 26, which is secured to the hub portion of the table 10,V is driven from the motor 16 through a motor pinion 27 `and a gear train 28 which 'terminates in the driving pinion 29. A housing 30 encloses the'master gear 26 and the pinion 29. `A dust ring 33 is secured to the rotatable table 10 to prevent dust and foreign material from entering the ball bearing raceways.

The mold ring 11, which has an angular molding groove 31 in its periphery, is removably secured to the rotatable table 10 by means of a series of dowel pins 32.

The arbor 19 also has a standard 36 secured thereto by-means ofa key 37 and alock nut 38. The standard 36 support the shaping devices 18 and 14. The'positioning device 13, which isrshown most clearly in Figures 1 and 9, has a roll 39 rotatably mounted on one end of a pivoted arm 40, thatis connected to a stationary bracket 41'by a bearing pin 41a. A hand lever 42 provides means for moving the roll 39 into and out of engagement with the grooved mold ring 11. The positioning roll 39 has a pair of frustoconicalangularly related faces 39"L and 39b that respectively'correspond to the face of the molding` groove and a radially extending annular shoulder 39c for a purpose later to be described.

The general construction of the shaping device 14 is substantially the same as that of the device 13 with the exception of an auxiliary guide roll 45 and the shape of the periphery of the roll 46. The auxiliary The shaping roll 46, which issmountedlon..

the arm 47, embodies a molding face 46a,

the elements of Which; are@ substantially.;

parallel to the axis of the roll, and a pair oguide faces 469i* and 46t'hatrrespectively.` enggrggeftheav adia centr side' Walls otft'het1 moldv ing; groove fwherr theV roll 46 is moved.y tonits operative' position.- byf the hand'v leven 49 as show-nain Figures- 11 and` oit' the drawings: bearing pin: 50 constitutes ai support lior. the roll 46 and a bearing pinals serves Y'asa mountingV fonthe movable' arm` 47.Y on: the stationary` bracket,` 52;' Thev described methodff of" mounting' the shaping' devices 13 and? 1'41y on 1 the standi 36 insures; tlie proper cooperation ot the shaping rolls 39fanda 46 Witliithemolding groove when the rolls. ocL cupy` their# respective operative positions.-

The operation of the motor 16 isf con:-` trolled through the agency ot' ai. treadle switch: 55,Y that` governs the loiv` speed. roperation fotth'ei motor,. and la: pair ofi pushfbutL ton'zsvvit'ch'es: 561 and 1 57 that: arey respectively adaptedto. control tli'e. starting.A andstopping of?? the high. speed?! operation; or the?4 motor. ' EherH control switches 56 and 57 arezenclo'scd in ahousingSl that is mounted onithesstand 36.5? by means of abracket 59. The conductors tli'at: connect the switelresz561,and-` 57 Withzthe-motor control circuit',v are lodi from theI casing 58 of.Y the; puslr button# switches through the conduit;` 61 tothe mainrsivitclres (noti. shown).4 orfeiictiiig'f the operation` ot the motor: in; accordance. with conventional practice.4 The-motori 16l is mounted Ton.. the base. 18?' in* Such; manner asto be pantiallyI enclosed by: the.l :trame 1f5 Vwhich@ proividesa compact? and; neat arrangement` otthemachine parts;

Tlhe' supplyf rack; 12:.; which is shown.: in Figures; 1,: to. 7.V inclusive, oil?Y the drawings. embodies' pain' ois supply rolls 7T0 and.71 that, are removably mounted in;- Utbmclets 72' andli73 and Whicln respectively supply.Y a fabric: strip 74 andv a' metallic reinforcingl stripi 7 to'tli'e molding; groove 31?.

take`l up'.` roll' 7.6` receives the cloth'v liner tliat is intenposedf4 between layers oit. the fabric strip-74% as: it: is unWoundfrom: the supply.. roll; 702 and".l delivered toa= fabric guide -member 7 7 5. overl an -idlenfroll 7-8- that is :rotatably mountedronfai swingable f 2111111179.

bearing" pint Slservesto pivotally connect the arm 79 to the rack 12.:insuclnmannen asitor permitfztiie; arm 79to: swing laterallyA af. considerabley degree.. A guide bracket 81 on Whichithefgnide=77 is mountedgis adjustablyi securedltothe arm 7'9` in such; mannerfthat itmay be angularly adjusted' relative to the. arm 7.9. The bracket 81 has an adjustable stop i S3 that.. engages: thea-cylindrical side Wall 84 of the rotatable table l0 to properly position the fabric supply guide 77 relative to the moldin'gjgroove` 31"ot""tlie mold ring` 11 when' thev arm 7`9"'occupies its operative position. The pivotal mounting ofthe arm 79 allovvs it to be swung away fromthe nioldW-hennot supplyingmaterial thereto.

The ,guide bracket 81. carries ananglef arm 85 thatsupports a. setfof guide rolls S6 at itsextremity which are held in place 'means of a bolt 87. The ,set of guiderolls 86: serve to4 control. the angle at.L which the reinforcingstfri p 7 which.. is of. rectangularcross section; is introduced i nto; the. moldngjgroove-BL from/the supply.. roll,71. A pair of irustro conical. rolls 88 and 89E-are mountedin. inverted sideby. siderelation. Theroll. 89 has; a laterally extending: annu lar flange 9() that detines-A anA aperture be.- tween the rolls through whichthe reinfore ingfstrip extends inpassing;Y to the periph.- eral groove of the mold as illustrated.` in Figure-5 oit the drawings. 'lhe'braclteti S5 andl the supply guides77are securcdin .place by a pair-'otthrough bolts-91: andlQ.:

fr; take uproll .9i-3 rece-ives-thecloth liner that4 is interposed between successive layers ot the reinforcingn strip 7.5 as'it' is unwound from the roll 71. Ay tension. roll. 94, over which; the neint'orcingstrip 7.5 passel.v has an.` adjustable tension devicel 95 of. usual .type employed in machines of this general. char.- actera and avpanl 4and ratchet device 96that permits of.; reverse movement ot thel roll` 94 to adjust the tension of the strip 75 as it issupplied t0 `the `:groove 31 otthe molde-ing 1.1.. The strip 75 extends over air idler. roll 971,4thatis most clearly shown iniFifLures l and 3 of the drawings. to the deliver.)Y rolls 86.- The Yguide roll. 97I issupported between parallel; ar-mso'f. a bracket 98'- by. means ot a bearingpinQQ. A. guide bloclelOOl bridges the arms of the bracket98 to .confine 'the re.I inforcing stripvtothe guide roll.

An: auxiliary rollv101. is' mountedl on a ,laterally extending, bearingVv pin 1.02', that is supported by a bracket 103.1rom-tlic snppllvv rack 12'andserves Vas asupportfor aroll ot filler material 104 that` is e1in' lo. \red`in the building, ot a bead ring;

The materials trom. which a, prf-terrml form of bead ring. which is shown in cross section in Figures 8 to 11 inclusive,. otfthe. drawings` may.. be consti'ructed,.includestlic. fabric strip-74.the reinforcingstrips 7b and the stripsotiiller materiallllt., Tlietabric strip-74 is a. suitable. Width ot cloth that has been calendered toimpregnate it withrubber in. a manner familiar to those'slilled in the art.. rEhis fabric strip constitutes the coverin for the bead' ring. Thereintorcingstri p 7 iscomposed` ofV loosely braided, strands Ll (l of steel wire, which, in their assembled form, are thoroughly impregnated with rubber. This reinforcing element is of rectangular cross section as shown in the drawings. The filler material 104 is of any desirable rubber composition which may be employed in the construction of the ring.

The operation of my device takes place substantially as follows: Rolls 7() and 71 of suitable fabric 74 and reinforcing material 75 are placed in the brackets 72 and 7 3 of the supply rack 1:2 and the strip of fabric 74 is led over the take up roll 76 to which the cloth liner for the fabric strip 74 is attached, over the idler roll 7 8 and through the fabric guide 77 to the molding groove 3l. The reinforcing element 75 is led over the take up roll 93 to which the cloth liner is attached over lthe tension roll 94 which is adjusted to impose the proper tension on the reinforcing strip, over the idler roll 97 and between guide rolls 8S and 89 to the mold groove. j

The operator now treats the molding groove'l and its adjacent faces with rubber' cement, or other substance that insures proper adhesion of the fabric strip with the surface of the moldino groove, places the end of the fabric strip 4 in proper position relative to the molding groove 3l and effects the rotation of the mold ring 1l by depressing the foot treadle 55. When a complete layer of fabric is wound on the mold ring the fabric is severed and the ends joined in such manner that the end of the strip initially secured to the ring ll becomes the uppermost end of the overlapped ends of the fabric strip.

The end of the reinforcing element 75 is wound with a narrow strip of tape, or other material9 to prevent the unraveling of the steel wire strands and to insure their proper engagement with the fabric strip. The mold is again rotated by the depression of the treadle switch 55 and two layers of the reinforcing element 75 are forced into engagement with the vertical molding vsuri1 ace of the groove 31 by pressure on the hand lever 42. This forces the positioning roll 39 into operative position with reference to the molding groove. The annular flange 39c of the roll 39 engages the uppermost edge of the reinforcing strip as it is introduced from the guide rolls 86 into the molding groove in angular relation to the molding face to insure the proper positioning ofthe strip in the groove bv downward pressure from the flange 39c and lateral pressure from the roll face 39D. This relation is clearly shown in Figure l2.

Since the reinforcing element 75 is quite pliable, and since it is also impregnated with uncured rubber gum that? is very tacky, it must be placed exactly where it belongs inimediately upon its introduction into the groove. By introducing the element 75 at an angle to the face of the mold, the lowermost inside edge first engages the inside corner of the mold. The operation of the roll 39 forcesthe strip securely into the corner of the mold and then lays the strip against the side of the groove. In this way, the strip is positioned without the necessity of sliding the strip along the fabric 74 or wrinkling the fabric in an effort to properly position the strip after it is in engagement therewith. It is also very difficult to obtain a secure seating of the top flange 39 of the roll on the top of the strip, if the face of the reinforcing strip is parallel with the face 391 of the roll.

Vhen two layers of the reinforcing elements 7 5 are wound on the molding ring l1, a narrow strip of tape. is wound about the reinforcing` element 75 which is then severed at the point where the tape is located to prevent unraveling of the wire strands and the mold is again rotated with the roll 39 firmly pressed against the two layers of reinforcing element as shown in Figure 8 of the drawings.

Two layers of filler material 104 of different widths are now wound along the bottom edge of the strips of reinforcing material and a final layer of the reinforcing strip 75 is wound in angular relation to the filler strips and the previously applied reinforcing strips, as shown in Figure 10. The last mentioned layer of reinforcing element is wound into proper relation withthe previously applied elements by means of the auxiliary roll 45 which introduces the reinforcing strip at a desirable angle to the shaping roll 46. The bead ring is formed .to the contour of the molding groove by means of the roll 46 to which pressure is applied through the hand lever 49. The guide faces 46b and 46c of the roll 46 insure proper size of cross section of the bead ring so built up, and also properly position the final layer of reinforcing element that is introduced into the molding groove.- The manner of engagement of the guide faces of the roll with the mold groove is clearly illustrated in Figure 2 of the drawings.

The mold ring is now rotated at its high speed by .depression of the push button switch 56 and the edges of the fabric strip 74 are successively folded over the assembled reinforcing and filler elements by the use of suitable hand tools such as are employed by those skilled in the art in similar operations. The bead ring so assembled is now finally formed and sized by prop-er pressure on the roll 46 prior to its removal from the molding groove 3l. This latter operation may be accomplished by inserting a stitching wheel or knife (not shown) beneath the fabric of the bead ring, to liftit from the groove.

'Ehe :semior complete.l vuloanization ofthe beadfv ring;v thus: const-rnctedgtinishes the: bead ring: anch` prepares thesame: ton use inthe manut'aotureaV of tire casi-rigs.1

It willi be obvious that the, arrangement anderelation-of parts inthemachine herein disclosedV may be;v altered Without departing fronr the spirit andi scope of.- my invention and; I desireA therefore that only such l limit-ations'fshall be imposed asY are indicated in the.A accompanying-,1claims.

lVhat.Y I claim! is:

LA machine for building; bead; rings comprising a rotatable and peripherally grooved formi adapted to receive the compo nent elements of the bead riiigfa1'olliadapte edfto swingl'aterally relative `to said, groove to; operative relation-` with. the peripheral groove, sai df roll'rhagving-K a flanged periphery adapted to: posit-ion, thematerial introduced intothe periph-eral groove: of; themold, and al, guider adapted to dir-ect thev component elements of the' beadf ring4 between the roll and the foi-frm, said guide being swingable toward andav aavay from. said form.

2. A machine for building bead; rings Comprising-y as rotatable table,- al peripherally grooved mold, mounted t'hereon and rot-atedthereby, means` for introducing; a component element of? the bead ring in angnlarfrelationV to i the` molding groove, a shapingzjroll mounted in; detinitel operative relation with the peripheral groove and adapted to engage andl posit-ion` the introducedv element'in: parallel relation i with the sidewall, of the groove.

3: in machine fon building; beadv rings comprisingqa rotatablel table, a-:peripherally gnoovedf: mold mountedf thereon and rotated thereby,.a stitching roll mountedwin definite operative rel'ati'olr with theperipheral gnooveea device for supplying material' to the'y molding cavity., and adjustablemeans forrop'erativelyl positioning` said: dev-icc relaF tive `to thev molding cavity.

4,; A; machine for building; bead ringe comprising a rotatable table, a periphcrally grooved mold mounted thereon and; rotated thereby, a shapingv tool: mountedf indefinite operative relation ivi-th the peripheral groove and adapted to cooperate therewith, a device for supplying material to theyperi'phe al groove, and adjustable means engaging theiperiphery'oftthefmold for-main'- taining the supply-deviceV infproperoperative relation to the mold.

5..A1 machine forA building' beadz rings comprising a rotatable table, aperipherally grooved mold mounted thereon andlrotated thereby, a shaping tool mountediin deli'nite operative rela-tion:v with the peripheral groove and adapted tolcooperatetherewith,

a: protally. mounted-I arm. adapted to guide material suppliedL to the: groove, a guide member mounted on the` extremity' of said arm, means for. angularly adjusting the guide member relative tothe pivotal arm, and means adapte-d to y engageI the, periphery, of said mold for adjusting; the relatioin between the guide member. and said mold'.

6; rmachine: for building annular rings which comprises if a. revoluble form-` having a peripheralV groove, means for supplying' a hat. str-ip of material to` t'heiorm, a, tool carriedi by a'-` stationary part ofthe-machine and manually movable into,V operative-f en*4 gagement with the; mold, said tool being adapted to sin'iultaneously arrange the strip of material Within themold and to apply moldingpressure theretoy andA` second tool similarly mounted and adapted toshape the material and to apply molding pressure thereto, said'` tools` being ad apted to be used in a. prearranged order.

7. A machine for building bead ringsfoomprising; a` rotatable member having a peripheral groove corresponding in profile-to t-Wo'sides oiiia bead ring, means for rotating the member, means for supplying respectively a metallic reinforcing element,.af strip offiller material andi aI stripof, fabricused in the building'ot said bead, and ai guide arm swingable into-and out of.l operative -rclation W-itlrsaid rotatable member, aV roller adapted to press they component elements ofsaid bead rings into-the peripheralgroove of, said. rotatable member, said guidef having'v inde pendentl means for respectively directing said reinforcingelement and said: fabric strip between the rotatable memberA and1 said roller;

8: A machinel for building bead' rings comprising a rotatable member haNing a peripheral groove corresponding inprolile to two sides of a bead, means for` rotating said: member, a positioning roller adapted toiposition'eaohcomponent-,part oi' said bead l in.I deinite relation to the remaining parts ofi said bead, and a finishing roller of materially different` contour adapted to-inish the outersurfaceof, the said bead.

9.1A1 machine forl building bead rings comprising a rotatable member adapted to receiveV axbead reinforcing strip and having av peripheral face corresponding in prole toithe'insidefface of the-bead; ring,v means for. supporting and. rotatingv said.v member, andl means adapted to positiony saidi reinforcingstrip laterally of the rotatable member.

In' Witness whereof, I' have hereunto signed my name.

ALRHQNSO H. MARIETTA.

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