US2120356A - Press - Google Patents

Description

R. W. GLASNER `lune 14, 1938.

PRESS Filed Sept. 4, 1936 4 SheeiLs-Sheet 1 June14,1938. Rw GLASNER 2,120,356

PRESS June 14, 1938, A R. w. ycaLAsNx-:R 2,120,356

PRESS Filed Sept. 4, 1936 4 Sheets-Sheet 5 e L.. t n

June 14, 1938. R. w. GLAsNl-:R

l PRESS Filed sept. 4, 1936 4 Sheets-Sheet 4 Cil ?a'sente .lune 14, i338 P itEss v we (lallel',v chicag m. I I s Application september 4, 193e, seriaiNo. 99.379` s claims. (o1. 113..;3g)

This invention relates to improvements in presses of the double action type, particularly adapted, though not necessarily limited in its use, for drawing sheetmetal or imparting to the article constructed therefrom the desiredshape or:

contour.

A further object is to provide improved press s of the toggle action type in: whichthe dies aS would be used in the ordinary-type:of-toggle-press, may be used -in inverted position,so ,that-thefi finished stamping or product may be pushed oiffil' of the lower die.v z-

A further object is to providean improvedpitess:v of this character. in which onlyshortfstrokesoff both the upper and lower .blanll;. -lrxolder-zslides.:,= will be required, .and in which .the.uwer-and-lowerf"l slidesmove in opposite directions, .withz-the '11esultthat with pressesiof thisf'charaoter;fthevobag; jectionable necessity for the .slidestolfmov'e adis-r tance more than-twice the depth o! thewarticle heretofore drawn sorshaped; will loe'.overcome,v and the slides will move. onlya comparatively short distance with respect to, the 1 depth of- :.the article, before the latter can be removed frorzr the. 1 press. i

With .a pressconstructed.. in accordance with. the principles of this inventiom,itfwillfzbezapef parent that a much lower ceiling height. -will be required for installation, therebyenabling -the user to carry materials onthe icraneover-thenpress crown instead of necessitatingtheir movement by the crane through theaisles.'

A further object is to provide. an improved press of this character in whiclaftheactuating` mechanism for both the -slides .is "disposedinla hollow crown below the bed, and allofthe rio--L tating members aswell as the toggle mechanisms-.- and connecting links will operate inf'ollor-afltibrif cant, with the attendant advantagethat all of the actuating parts will be readilyfaccessible and will obviate the necessity of therepairman-climb; ing to the top of the press -tol gain.'accessA to: such parts. r i l 'A further object is to provide--aria-improved: press of this character in `which'theic'rown-:ltif ther.` press will be relieved of carryingthe loads which-'1 in an ordinary form of toggle'press11tlie'crown usually has to take, and will eliminate .the vdilculties of taking the load ori-the tie-irodsjtsuchf loads in `the present .inventionbeing fcarrie'dby:V -the connecting links which reciprocateithepper! slide. and due to the fact thatM-Sluclr-linlsare offal substantial size the diculty ofi-an objectionable a deflection will be overcome.

To the attainment of these' nds complishment of other neW--anduseful objects as will appear, the invention consists in the features of novelty in substantially the construction,v combinationl and arrangement of the several parts hereinafter.;more. fully described and 5 claimed and shown `in :the accompanying drawings illustrating this invention and -irl-Wyhlenl Figure 1 is a view :partly in vertical. section, partlyin. elevationyand partlybrcken away of, a press 'or thischaracte .constructed in laccordancel .io witnthetprinciplesf. .l hisfinventionand showlr-1g.A thedie carrying-slidesiatherositionfthey:would assume just at thefcompletionfof the draw izigqgiivv forming operation onthematerial-.r r' ligure 2 is la. view.l sinni-1ar---fto.-1iic'ur= l, ,showing-'.15 thefldieifcarrying elicits. sep,fl.raief11 1 Y. l Figure; 3 is ,a verticalftransverse, sectional.. viewI taken 'Online 3T3-.Figur gf Figure fi; isi; a.detai l-,- .yertia sectional view takenonflinejr-fr'igllrflff 'zu s, 20

5 ,is a,detai.1iwe rztical'settanal,vierawithy parts omitted and as taken on line=' 5.-5,'Figure.3. .meure 6 is atview-.simllarfto-Eigure 5, .With- .the partsfshownindfferenti nosltionsaf f f Referring more particularly to- .-thepdrawings, 25 the.. numeral ldesisaate a-:bed yplateWhichrests upon the bed Il of 4theg press, and `the bed forms an integral part;- of a .hollow-lower crown designated generally-by.V the reference numeral I2.

Supported bythe' bedof fthe. .press and secured` 30 thereto in any suitable mannen-:are uprights I 3,- and connectingtheluprights at-gthe upper'k vendsl thereof, `is a .beam orfmember M .constituting with :the uprightsflS ahollowzcrown whiche also constitnteian integralstructure; and these parts 35 are preferably constructed;ofcomparatlvelyfthin sheet. material .welded or;-otherwise securedtogetherln an ;-integral;,structure v f l efglower crown 4l2 latter iis" preerably ttf-maledi, sand" theslide- '2.5i 255 is reciprocable in a guideway 21 within the hollow base of the press.

The work holder I5 is preferably yieldingly supported by the slide 25 and to that end there may be carried by the slide any suitable number of fluid pressure devices, each comprising a cylinder 26 of any suitable size and desired configuration.

'Ihe cylinders may be attached to the slide or may be formed inthe slide as an integral part thereof. In each of the cylinders is a piston 26" and a piston rod 26c extends from the piston and is connected to the Work holder I5, duid pressure being admitted into and delivered from the cylinders through a controlling valve 26d. The fluid pressure is supplied from a line or tank (not shown) but in a way usual with devices of this character. The fluid pressure acts upon the pistons 26b in such a'manner as to normally hold the work holder I 5 spaced above the bed I0 (as shown more clearly in Figure 2).

Any number of these eccentrics and eccentric strap connections between the lower slide 25 and the shafts I8 may be provided, according to the vmotor 3I, the drive shaft of which may be provided with a pulley over which an endless ilexible driving member 32 passes, and this belt also passes over one of the elements 33 of a clutch device. This clutch device may be of any desired or suitable construction, but preferably embodies a rotatable member continuously driven by.

means of the belt 32.

A gear 34 is connected to the member 35 of the clutch device and which latter member may be controlled in. any desired or suitable manner, either hydraulically, pneumatically, electrically or otherwise, so as to render the clutch device active to impart rotation to the pinion gear 34, the clutch being under the control of the operator in any suitable manner, not shown. The gear 34 meshes with a gear 36, which latter is secured to the shaft 28 for rotation therewith.

It will therefore be manifest that when the clutch device is rendered active, motion will be imparted to the shaft 28, and this will in turn reciprocate the lower slide 25.

Arranged above the bed of the press, is aslide 31 which is arranged to operate withinthe upper crown, and secured to the slide 31 is a die 38 of any desired contour to conform to and cooperate with the die 26 on the lower slide.

The upper slide is reciprocable toward and away from the bed and is supported by means of bars or rods preferably comprising sections 39-40 adjustably secured together in any suitable manner preferably by means of threads 4I on the lower end of the section 39, which telescopes into the section 40 and engaging a threaded nut or collar 42 carried by the section 46. The section 39 is secured to the slide 31 in any suitable manner preferably by passing therethrough and on which rod are arranged nuts or collars 43-44 on opposite sides of the slide.

One end of each of these rods reciprocates through a suitable bearing 45, and the bearings are of such length as to resist lateral strain on the rods. t

from a shaft- Within the hollow base or lower crown and adjacent opposite ,walls 46 but spaced therefrom are partitions 41, forming chambers of any desired size and Within these chambers is arranged the operating toggle mechanisms for the upper 5 slide, and suitable braces or ribs 48 are provided for reinforcing the partitions. Extending across the chambers formed by the partitions with the respective walls of the base are stub shafts 49 about each of which a member 50 provided with 10 an arm 56 is oscillatable. A link 5I is pivotally connected as at 52 by one end to the arm 56a, and the other end of the link 5I is pivotally connected as at 53 with the lower end of the section 40 of the rod which supports the upper slide 31, preferably by means of the lower end of the section 40 being bifurcated as at 54 to receive the end of the link 5I, as shown more clearly in Figure 4.

A second stub shaft 55 is journaled in suitable bearings 56 in the partition 41 and one of the walls 46 of the base (see Figure 4) and pivotally mounted upon the shaft 55 and by one end is a link 51. Another link 58 is pivotally connected as at 59 with the link 51, and the link 58 is pivotally connected at its other end as at 60 with an arm 60a connected to the member 50, and which arm 6I)a is oset with respect to the arm Extending across the hollow basecrown and journaled in suitable bearings is a shaft 6I, and to this shaft are secured eccentrics 62, the eccentrics being opposed to each other, that is extending'on opposite sides of the shaft.

An eccentric strap 63 cooperates with each ofv the eccentrics 62 .and each strap is provided with an arm 64, each of which arms is pivotally connected as at 65 with one of the links 51, so that when the shaft 6I is rotated and the eccentrics 62 rotated, the eccentric straps 63 and arms 64 will .rock the link 51 about its pivot 55 to cause the parts to move from the position shown in Figure 1 to the position shown in Figure 2, or vice versa. The oscillation of the member 51 about its pivot 5.5 will cause the member 56 to rock about its pivot 49'to cause a reciprocation of the upper slide 31 through the medium of the bars or rods 39-40.

The shaft 6I is rotated through the medium of gears 66, with which pinion gears 61 mesh, 50 and which gears 61 are secured to the shaft 28 for rotation therewith..

'I'hus it will be seen that when the shaft 26 is rotated, motion will be imparted throughl the pinions 29 to the gears I9, which in turn .rotate the shafts I8 to reciprocate the lower slide 25, and at the same time the gears 61 carried by the shaft 28 meshing with the gears 66 secured to and rotating with the shaft 6I, will rotate the eccentrics 62. This motion of the eccentricsl 62 through the medium of the eccentric straps 63 and arms 64 will operate or rock thetoggle or link mechanism or connection between the eccentric arms 64 and the rods 39-40 to reciprocate the upper slide 31.

It is of course to be understood that the slides 25 and 31 are so arranged and the actuating mechanisms therefor are also so arranged that the slides will operate in timed relation with respect to each other. u

Within the die 38 is arranged an ejector 68 for ejecting the work 69 from the die 38, and as the lower die 26. recedes or is lowered, the work 69 will be stripped from the lower die.

The ejector 66 may be operated in any desired 75 or suitable manner, either by fluid or hydraulic?, pressure, and to that end there may be provided* cilinders arrangerried haette, upper c, n@ 'c en' @habeis 1t with worlahas be esentcona struction short,- ,stroles on both the weer end lower ,1ark-:holding Slidea- 'The' normalmation-of, the, 10we r Siide is down' magma-thaliana are of. the. die-26 will b be low the upper face -QfHth/e-wolf1;.holder I5,` so that when the work is placed in the press it will rest uponzand. bie/Supported bathe work holder I5. The outer upper die 38 is lowered until it contacts the work resting upon the work holder l5, which latter cooperates with the die 38 to grip the work and hold it from wrinkling but permitting the material to ow. A further lower,- ing of the die 38 will depress the work holder against the pressure of the uid in the cylinders 26a. When the die 38 reaches the limit of its downward movement or as it approaches such limit, the lower slide 25 and die 26 ascend to operate upon the work and during such ascending movement the pistons 2Gb will remain stationary,`while the cylinders 26n ascend with the slide 25, the pressure in the cylinders 26a owing back and further from the supply to the cylinders through the controlling valves 26d, which latter are of any ordinary and well known construction.

'Ihe installation of a press of this type will necessitate a much lower ceiling height and the material can be carried by the cranes over the tops of the presses, instead of necessitating the carrying and tranporting of the material through the aisles'.

Furthermore, the stresses and strains of the slides operatingupon the work will not be borne by the crown of the press or by the tie rods but will be exerted against the connecting links which reciprocate the upper slide, and as they are of a considerable size and durable construction, there will be no difliculty by supporting the load as regards the question of deflection of the parts.

While the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new isz- 1. In a double action press, a combined bed and lower crown, a reciprocable slide, a die carried by said slide and operable through the bed, eccentrics housed within said crown, operative 'connections between said eccentrics and said slide for reciprocating the latter, a reciprocable slide above the bed, a die ,carried by the last said slide and cooperating with the first said die, a shaft in said crown, disposed between the said eccentrics and separate therefrom, opposed ec- "m are; a-fshf lil' SaidA c1 pOSf-d rbftween the Said ecntcs. 3v therefrom, opposed. eccentrics secure Shaft @probation therewith, toggle-m56 ,i -in-Seid Grown-eed 0.a Opposite sides., t

gie. -meeheixilSi-eft the mail 'fait operative connections between the said tr mechanisms and the respective second recited ec-lv centrics for reciprocating the second recited slide, a, drive shaft having a constant direction of `movement, operative connections between said slide for reciprocating the latter, a reciprocable slide above the bed, a die carried by the last said slide and cooperating with the first said die, a shaft in said crown disposed between the said eccentrics and separate therefrom, opposed eccentrics secured to said shaft for rotation therewith, toggle mechanisms in said crown and on opposite sides of the said shaft, operative connections between said toggle mechanisms and the second recited slide, operative connections between the said toggle mechanisms and the respective secondrecited eccentrics for reciprocating the second recited slicle, a drive shaft having a constant direction of movement, and gear connections between said drive shaft and each of said eccentrics.

4. In a double a'ction press, a combined bed and lower crown, a reciprocable slide below the bed, a die carried by said slide and operable through the bed, eccentrics housed within said crown, opera,- tive connections between said eccentrics and said slide for reciprocating the latter, a reciprocable slide above the bed, a die carried by the last said slide and cooperating with the ilrst said die, a driveshaft in said 'crown intermediate said eccentrics, gear connections between said shaft 'and said eccentrica, an additional shaft in said crown intermediate and separate from said eccentrics, eccentrics secured to the last said shaft and projecting on opposite sides of the latter, toggle mechanism in said crown on opposite sides of the said additional shaft for actuating the second recited slide, operative connections between the second recited eccentrics and the respective toggle mechanisms for actuating the latter, gear connections between the said additional shaft and the between the said shafts.

ventries secured to said shaft for rotation there-3;?, witiij toggle mechanisms in said crown and on 5. In a double action press, a combined bed and lower crown, a reciprocable slide below the bed, a die carried by said slide and operable through the bed, ecoentrics housed within said crown, operative connections between said eccen-A eccentrics, eccentrics secured to the last said shaft and projecting on opposite sides of the latter, toggle mechanism in said crown on opposite sides of the said additional shaft for actuating the second recited slide, operative connections between the second recited eccentrics and the respective toggle mechanisms for actuating the latter, gear connections between the said additional shaft and the last recited eccentrics, and a gear connection between the said shafts, all of the actuating means for said slides being housed within the said crown.

audace 6. In a double action press, a combined bed and lower crown, a reciprocable slide below the bed, a die carried by saidslide and operable through the bed, eccentrics housed within said crown, operative connections between said eccentrics and Said slide for reciprocating the latter, a reciprocable slide above the bed, a die 'carried by the last said slide and cooperating with the first said die, a shaft in said crown, toggle links for actuating the last said slide, said toggle links housed within said crown and disposed on opposite sides of said shalt, operative connections between said shaft and said toggle links, a drive shaft, operative connections between said-drive shaft and the rst said shaft and between said drive shaft and said eccentrics, said slides operating with comparatively short strokes, with respect to the depth of the product produced, work ejecting means carried by the second recited slide, and means whereby the work ejecting means willbe actuated with respect to the last recited slide.

RUDOLPH W. GLASNER.

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