US2667853A - ingersoll - Google Patents

Description

Feb. 2, 1954 R. c. INGERSOLL 2,667,853

AUTOMATIC RECEIVING AND EJECTING MEANS FOR PRESSES Filed Dec. 16, 1948 3 Sheets-Sheet 1 f E; AZ .Bx c 'D) E f fnvenim 1954 R. c. INGERSOLL p, 6 8 3 AUTOMATIC RECEIVING AND EJECTING MEANS FOR PRESSES Filed Dec. 16, 1948 3 Sheets-Sheet 2 Feb. 2-, 1954 R. C. INGERSOLL AUTOMATIC RECEIVING AND EQECTING MEANS FOR PRESSES 5 Sheets-She't 3 Filed Dec. 16, I 1948 Ina/671127 fig C [7296713011 This reshaping press may be of any well-known type and, as shown in the drawings, may comprise a bed Ill having a bolster ll thereon which supports the convex die 12 that is secured to said bolster by suitable clamp means I3. Vertical columns M of desirable construction are positioned at opposite sides of the bed In and extend upwardly above the die [2 to provide uides i5 for the ram l6 which is reciprocated toward and away from the bed of the press by any suitable or well-known means. The ram It carries on its lower portion the concave die I! which conforms with and is generally a counterpart of the lower shaping die [2. At its central region this concave die I! is provided with a tapered pin [8 of suitable cross-section which is adapted to fit into a similarly shaped. central bore l2a in the die I2, for the purpose of centering the disc which has been deposited on supporting rails later to be described. It is here stated that the disc has a suitably shaped opening :0 (Fig.3), the dimensions of which correspond generally with the diameter of pin [8 for assisting in the centering of the discs in the reform press.

The portion of the disc handling arrangement which deposits the disc on the lower die 12 preferably comprises swinging means, between the dies,'which may receive the disc from a conveyor and are arranged to support the disc above said die [2 and at the proper time these said swinging supporting means are automatically withdrawn from the disc. This arrangement comprises a pair of horizontally extending angle metal rails arranged parallel to each other in a proper plane above the die I2, the flanges of such rails defining respectively horizontal elongate supports l9 and upstanding abutments 20. Each of these rails has a pair of lugs 2| projecting in an outward horizontal direction away from the axis of the reciprocal movement of the ram. At their outer portions these lugs are apertured to receive horizontally extending rockshafts '22, and at an end of each rock-shaft there is a suitable cam means which preferably takes the form of a radially extending arm 23 which define effective means whereby the rockshafts are rotated.

, The free ends of arms 23 have lateral pins 24 which are adapted to be engaged by a cross bar 25 carried by the lower portion of the ram by means of straps or hangers 26. Each rockshaft 22 is rotatably mounted in axially. bored journaling bosses 21 on the adjacent ends of a pair of horizontal rods 28 arrangedin suitably spaced parallel relation to each other and extending through guide bearings in the standards I4, as shown in more detail in Fig. 3. When the ram carried bar 25 contacts and moves the arms 23 in a downward direction, the rock-shafts 22 will be correspondingly rotated and the supporting rails will be lowered by a swinging movement to the positions shown in broken lines in Fig. 2. This downward movement of the rails withdraws them from the disc X and such disc will be deposited upon the top of the convex die l2. During the downward movement of the ram the guide pin l8 will be entered in the axial opening at of the disc to centrally position the disc relative to fixed die I2.

. When the ram is being retracted from the die l2, the actuating arms '23 are adapted to follow the movement of the bar 25 by reason of the fact that rock-shafts 22 are automatically returnable to their normal positions where. they receive the discs. This automatic function is preferably effected by means of coiled springs 29 which surround rock-shafts 22, one end of each spring being looped around a restraining pin 36 projecting from the rock-shaft and the other end of each spring being anchored to a rod 28, in any suitable or usual manner. This automatic return of the rock-shafts and the rails supported thereby is adapted to swing the rails back to their initial position where they are ready to receive the next disc.

The rod 28 of each pair are mounted for 1ongitudinal sliding movement in the columns 14 in order to alter or vary the distance between the rails, thus to permit a change-over when the press is to be operated for reshaping discs of larger or smaller dimensions. This adjustability of the arrangement is adapted to be quite readily accomplished by providing racks 3| on the outer end portions of rods 28, such racks being engaged by pinions 32 mounted in housings 33 through which the rods 28 pass on the outer Walls of the columns i4. These pinions 32 are secured to rotatable shafts 3A journaled in the housings 33, and said shafts may be rotated by means of hand wheels 35 at the ends of said shafts. Means in the form of looks or clamp brakes 36 surround the shafts 34 and may be readily released by the operator to permit rotation of the shafts for adjusting the rods 28 as Well as the rails supported at the inner ends of said rods.

As may be seen in Fig. 3, the disc-supporting flanges [9 of the rails are provided with segmental recesses or notches 31 defined by an arc of a circle inscribed from the axis of the press.

These recesses or notches 31 will assist in clearing the disc from the rails quickly and permit the rails to clear the lower die 12 when the rails are withdrawn from the disc.

After the ram starts its upward retractive movement away from die [2, it is desirable that the disc X be dislodged from such die to discharge the reformed disc upon a suitable conveyor assembly 38 (Fig. l) which receives the disc and carries it away from the press to the next station of the processing line. The remaining portion of the disc or blank-handling mechanism, which operates in synchronized relation with the ram, includes means which are closely related to the positioning portion of the mechanism and are adapted to remove the reshaped disc. This latter means comprises a reciprocal bar 39 which is arranged radial to the axes of the dies of the press and has a cross-member 40 at its radially inner end which i adjacent the margin of die I 2. As seen in Fig. 1, the bar is positioned in a plane extending oblique to the horizontal so that it lies approximately tangent to the curvature of die 12. This reciprocal bar 39 i guided in a plate 4| which is secured in an upright position to the side of the bolster l l and has a vertically elongated recess or slot 42 in its upper portion through which the bar 39 passe and in which said bar is adapted to be reciprocated longitudinally. At the lower portion of the slot or recess 42 there is a cam block 43 carried in an adjustable bracket 44 on the inner side of the plate 4|, said cam block being adapted to provide a definite guide for the bar 39 during its sliding movement.

The arrangement for operating the bar 39 in a reciprocal manner to dislodge the disc blank comprises bell-crank 'means which preferably consistsof a long arm 48 secured to a rock-shaft mew-men glatternisajourna'led in bearing bosses' fiflw at ztheslcwen endseaof: suitable:.-hangers:.5.| thatare:

secured to the bolster alongside:thexplateg tlas bestshowminx Fig; 2.:.The1r0ckeshaft .49zealso carriesza: short; arm 1512 which has :pivotaleonnection ataiits. outers-x end: with a: verticallyiireciprocala plunger e'COdai 53 thatiiis. arranged ito: operate? ithe': disc displacing mechanism. Armxaiiqoiythebbellei crankzmeansahassits swinging. end: portion-zoperativelyziconnected. by: a. pivot; pin-:,,54- to :the: other,

region .of ;the reciprocal bar 39: for: moxzingzsaid'f baninibotlii a. forward: and: a; return direction;-

with" respectizto 'the'idie and: disc-rthereon: The;

pivot: pin: 54 .may. be: selectively insertedsthrough;

anmoneof. :aseries of "holes; .55a1nade in the outer, region: of. the: bar,'.. thusfipredeterminings the: -dis. tanceewhich isto beitraveledrby said-bariand its.

cross-member 40:; Itztwill ,be: apparent that this. arrangement. is adapted; to "dislodge discsr having;

diffierent;dimensions:;

Thee-plunger rod 53, 1 whichis carrangedv verti= callyr, alongside or adjacentr-one: of-rthe: columns.

14-; has ;-its upper" end? pivotally connected as" .at: 45iwith: the end ;of a horizontal L-arm aof': a bell: cranlzzcarried Lon :a rock-shaft 114:1 Suitableibearing brackets 55,,.which:are..anchored to the= c011- 1111111114; provide journals; for the rock-shaft '41. Theuother belli-crankaarm .151 extends; in; an up.- ward:directionzadiacentribut out .of 'conta'ctwithi asideiiaceiofa'the:pressram and"..carrie aroller 58 on itsrrupper*-end;..:. This: arm 510i the bellcranlei'sadaptedito heioseillated torockthe shaft 41 BJId-ZOPEIBvtB'JthBTbeHfiCI'aDk, and thereby. transmit:motion-through ithe medium of plunger rod 53" torthezzdisc..displacin-grbarrtfis; Oscillation ofthe bellecranltarm-fii :is..-effect ed: byi;positively operated: mechamsmrwhichzmays take the. form of eamzmeanse defined. by; a: channeled: guide which. is mounted'upontheiadiacentz'face .cf thejram I s.

Said guider: comprises. a; long: straight vertical portion 59 andzz-ashort 'offset;- =lower portion 8!! which are :connectedcto; each otherrby; an. oblique region; Bl .Y the cross-sectional. dimension" of said guide" channel beings sufficient-to accommodate the-roller 58 therein;

When: the reciprocal-cram; I 6 is in 1 its lowered position; the roller .5 Bewillbe int the-1 upper portion. 59:.of the guiderchannel: Asuthe ramapproaches the:- end of'tits'. withdrawarmovemens thezrol-le'r. 58.;is; first: engaged in the intermediate cam': region:. i of thesxguide channel and then: reaches-the; ofiset region 6 i1. This effects a' swing-'- ing,:ojlthezibellecrankzarm 5.1 ftoward the right to rock. thee-shaft il andllift the other bell-crank arm 46; which in turn raises plunger rod 53. Them throug h the.-.;instr-umentality of bell-crank arms 52 and 48, the ,reciprocal...bar..39 will be shifted radially inward toward the disc on the die iii The distance Which is traversed bythe reciprocalibar 39 .and its cross-member- 40 -isto thercentralregion of die l2 as-shown by dotted lines in=.Figs.'. 1 and. 3 and Wil-l be sufiieient-to dislodge-the reshaped disc -beyond the-central area. of the lower. dieto permit said disc to slide oif-s'aiddie :and .be. received by the conveyor '38.

Means arepro ided for definitely locating the discs on thet-rails-ls andlfl' so -that such discs willbe. axially aligned with" theupper and :lower dies i land -I 2 respectively,- andprior to operating the-rails to deposit-a disc on-tlie-lower die. Said means may comprise suitable assemblie each including a stop member 66 and a limit switch 66a, attached to and carried by the rails 19 and so as to project inwardly toward each other in the space between said rails. As illustrated in therailszlezanckzflrsuch adjustments?being readszilyeefiectedcby releasing: thesattaching meansf or; bolts:fiazthershankswof :whichvpassathroughgslotss 691.-.- ;Theaassembiies are-then moved-1ongit idinally byithe;setiscizewss'lmicarriedzingblocksrl gtoethce desired: positionmwhemtheyz aredocked-m ightr-- eningi thei. bower-16.8: ,Thesc ad ustments-.- of; the; assemblies area-made preferably. after-athearails haremeenzadjilsted@toward or from eachpthemby: the rack and gear arrangement-on.they railsum; DOItiTIgTiI'DGS'iZBR-E Theclimitisw-itches Elia-{maybe any convenient ,zorcwelleknownz design and-1.- each; has-.za .detentfifibsvhich isadaptemto be engageda by;::the.=: disc: edge; toztrip; thezsWiWh-ior. .controlr-fl ling: thezmechanismzwhioha operates; the press- 3 Conductors wand brlead from theilimitiswitehstm theaelectricai elements? .(notshown) rW-hiChinitiate;-. thfikQDBl'fitiOIlaiDf the? reformxpressgn-t This-apron videsa atsafvety-feature whichqisixdesirablerin Mica/': tomati'c mechallflfhilniof-zthis20115113356131:

whileithis inventionhas;beemdesoribeddnidem tailinits 'presentaprefermddormer:embodimenta it. will-zbeaapparentto personssskiiledl-inithegart;, aftenunderstanding; therimprovements; that-yar ious changesrand" modificationsscmaya be madee thereinzwithout departinggiromtheaspiritor:sco thereoi; It: is aimedeini theeappended'a claims-etc COYEX'?-2,11Z.SUChfehal'nges aandrzmodifications Y What is claimedds-to 1; A press; yfor-i-forming g-discs having; concave-r; convexacrossssection com-ari in fifc nTifi e 's'fplrl receiving-a .blankin ramxmevablenim directions: towardand retractableriromvsaidgdie, and acon-a cave dieion said: ram: confrontingasaid-i convex; die, in: combination: with; 3119.83 ,ector. assembl-v z;

.. comprising-c a reciprocal bam;meanw rasui na:

said zbarsinahlanenapproximately;tangent?to the; vvorkiiace-aofisaid;convex; dieaixa cross memberion -z thespontionsof :sjaidirecinrocal than. iadiacenti said-l convexsdie iomengagementzwith',aiormedzblanki on; saimconyexzdie;hell?cranksmeanszmountedecni afixedzportienzofisaidmresseoneaarmzofisaid belle;

semblw and: dislodge";thesblankaonxsaid: convex;

2. .A press:- tor: formingsdiscslhaving'xconcavosconvex. cross -section:- comprising an convex? dieza font receiving ablank; a-ramzmovablmtoward: and res:

4 tractable 'fromr said die; and a concave die' 'on said ram confronting said convex die, in combination with an ejector assembly comprising, a reciprocal bar; means for guiding said bar in a plane approximately tangent to the work face of said convex die; a cross member on the portion of said reciprocal bar adjacent said convex die for engagement with a formed blank on said convex die; bell-crank means mounted on a fixed portion of said press, one arm of said bellcrank being connected to said reciprocal bar; a plunger rod reciprocal vertically alongside said press and having its lower portion connected to another bell-crank arm; means defining a vertically extending guide channel on said ram, said channel having an ofiset lower region; swingable means pivoted on a fixed portion of said press adjacent said guide channel and being connected to the upper region of said plunger rod, said swingable means having a member engaged in said guide channel, the retractable movement of said ram being effective to move said swingable means in a direction to raise said plunger rod thereby to operate said ejector assembly and dislodge the blank from said convex die.

3. A press for forming discs having concavoconvex cross-section comprising a convex die for receiving a blank, guides extending above said die, a ram movable toward and retractable from said die, and a concave die on said ram confronting said convex die, in combination with an ejector assembly comprising, a reciprocal bar; means for guiding said bar in a plane approximately tangent to the work face of said convex die; a support on which said reciprocal bar is movably mounted; a cross-member on the end portion of said reciprocal bar adjacent said convex die for engagement with a formed blank on said convex die; a first bell-crank mounted on a fixed portion of said press; means supporting and adjustably connecting an end region of said bar to a first arm of said bell-crank; a vertical plunger rod reciprocal longitudinally alongside said press and having its lower portion connected to a second bell-crank arm; means on said ram defining a vertically extending cam guide channel; a second bell-crank pivotally mounted on a stationary portion of said press, one arm of said bell-crank being connected to the upper region of said plunger rod; and a roller carried by the other arm of said second bell-crank in cooperative association with said cam channel, the retractable movement of said ram being effective to rock the bell-crank associated with said cam channel, thereby to move said plunger rod in a direction to rock said firstmentioned bell-crank for operating said ejector assembly and dislodge the blank from said convex die.

4. A press for forming discs having dished cross-section comprising a fixed convex die, a reciprocal ram movable toward and retractable :from said convex die, and a concave die on said ram, in combination with an intermittently operable ejector assembly comprising, a reciprocal blank engaging member; means for guiding said member in a plane tangent to and across the work face of said convex die; a lower bell-crank pivotally mounted on a stationary lower portion of said press, a first arm of said bell-crank being operatively connected to said reciprocal member; and an upper bell-crank pivotally mounted on a stationary upper portion of said press, a first arm of said lower bell-crank being operatively connected to a first arm of said upper bell-crank; and means onsaid ram cooperating with a second arm of said upper bell-crank and operative in re- 5. A press for forming discs as defined in claim' 4 wherein means on the ram define a grooved cam member, and the'second arm of the upper bellcrank is cooperatively associated with the groove in said cam member. 7

6. A sheet metal forming machine comprising a bed having a fixed arcuate die for supporting a blank; vertical guides at the sides of said fixed die havin portions extending above the horizontal plane thereof; a mobile ram reciprocal in said guides and having an arcuate die adapted for co operation with said fixed die; an automatically reciprocable intermittently operable member having a portion in a plane tangent to the arcuate face of said fixed die; a vertically adjustable cam block on said bed supporting and guiding an end region of said reciprocable member during movement to and from said fixed die; a bell-crank having a first arm adjustably connected to and supporting the end region of said reciprocatory member which is remote to said fixed die; a vertically extending reciprocal rod connected to a second arm of said bell-crank; and means actuated by said ram during withdrawal movement thereof to move said rod in a direction to actuate said bellcrank thereby to move said reciprocable member tangently across the arcuate surface of said fixed die thereby to dislodge'a blank therefrom.

7. A machine for forming dished cultivator discs comprising a bed havin a fixed die of convex cross-section for supporting a disc of concavoconvex section; a mobile ram reciprocal to and from said fixed die; a die of concave cross-section on said ram adapted for cooperation with said fixed die; an automatically reciprocable intermittently operable member having a portion extending tangent to the arcuate face of said fixed die; cam means on said bed close to said fixed die and supporting the adjacent end region of said reciprocable member; a bell-crank having a first arm adjustably connected to and supporting the end region of said reciprocable member which is remote to said fixed die; a vertically reciprocal rod connected to a second arm of said bell-crank; and means actuated by said ram adapted during withdrawal movement of said ram to move said reciprocal rod in a direction to rock said bell-crank thereby to move said reciprocable member in a plane tangent to said fixed die for engagement with an edge of the disc for dislodging said disc.

ROY C. INGERSOLL.

References Cited in the file of this patent UNITED STATES PATENTS

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