US2605629A - Three roll padder or the like - Google Patents

Description

A1155, 1952 H. H. BELCHER THREE ROLL PADDER 0R THE LIKE Filed April 9, 1946 IN1/Emol; Hdroldjelcber Patented Aug. 5, 1952 UN'ITED :STATES ,PAT'E ,Ixi'rf.,oFFlclgl -of Massachusetts.v v

I Application April 9, wisgi-M N10. i 60,811

This invention relates to improvements in squeeze roll constructionsvfor padding machines, the invention, however, not being limited to padding machines but being useful in other relations as for instance in any kind of squeeze rolls for textiles. Y Y

In squeeze rolls of the class described pressure is exerted on the rolls to bring them together to form the nip and while the rolls are running they are not damaged except for ordinary wear. I-Iowever, in the prior art the rolls must be propped apart when not in use to prevent flattening due to the weight or pressure ofl adjacent rolls. It is the principal object of this invention to provide a construction in a squeeze roll unit eiectively eliminating the possibility of damage to the rolls through the operators neglect to prop them apart over weekends or other shut down periods.

Further objects of the invention include the provision of a three roll unit constructed in such a manner that two of the rolls are forced toward a central roll to provide two nps in combination with means providing for automatic separation'of Vthe rolls by gravity without requiring. any attention from the operator.

Other 'objects and advantages of the invention Will appear hereinafter.

Reference is to be had to the accompanying drawings by way of illustrating the nature of the invention and in which Fig. l is a view in front elevation illustrating the invention, parts being in section; and Y Fig. 2 is an end view of the apparatus of Fig. 1.

A pair of pedestals I are provided to support a plurality of rolls at their ends, the rolls as shown in this case being located in vertically arranged position and being three in number. There is a central roll I2 which is driven as by means of a pulley I4 and this roll is journalled at its ends in pedestals I0 by means of fixed brackets I6. Each pedestal pivotally mounts an upper lever I8 and a lower lever 20 on pins such as those at 22. These levers journal upper and lower rolls 24 and 2B respectively for movement in fixed position. The upper and lower levers are connected by means of pivoted uid power cylinders (either liquid or gaseous) 28 each of which is provided with a piston rod 30 pivoted to the corresponding upper lever I8 at 32. Clearly these power cylinders can be actuated to draw the upper and lower -rolls tightly against the central roll.

The cloth indicated at 34 passes over idler rolls 36 and through a dye pan 38 to the bottom roll 26. The cloth passes through the nip between Rodney yHuntMachine Company,

a corporation.;

rolls'26 and I2, laps roll I2 and Ithen (passes through the nip between rolls I2 and 24. A second dye pan may beused as desired or the in: stallation may be used without dyeing as for in` stance in liquid extraction rolls.

A rocker arm 40 is pivoted on each pedestal I0 in bosses 42. One end of each rocker arm extends under its corresponding lever 20 as clearly shown in Fig. 2 and the other endof-the rocker arm has a lift rod 44 pivoted thereto as at 46. The lift rods extend through holes in levers 20 and are provided with slidable guides at 48 in levers `I8 to allow relative motion of the levers with-respect to the lift rods. A collar 50 is fixed to each lift rod in position to abut thevundersides of the levers I8. i Y

When pressure is V'exerted through `cylinders 28 the piston is drawn down within the cylinder and the ends lof the levers Island 20 are drawn together bringing the rolls 24 and A26 into contact with center -roll I2, exerting pressure thereon in proportion to the pressure applied to the cylinder. When the pressure is released from the cylinders the weight of bottom roll V26 and levers 20 causes the bottom roll to drop from contact with the center roll. At the same time the undersides of levers 20 contact the rocker arms 40 and force the latter in a counter clockwise direction in Fig. 2 thereby lifting the lift rods 44. The collars 50 on lift rods 44 engage the undersides of levers I8 raising the latter and thereby raising upper roll 24. If each rocker arm has a 1 to 1 leverage ratio the-upward thrust of lift rods 44 is about equal to the weight of the bottom roll. Since the lift rods 44 act on levers I8 at a distance from the lever pivots 22 approximately twice the distance from this pivot to the center of the roll, the upward thrust of lift rods 44 will be seen to be more than suflcient to raise the top roll 24 from the center roll I2 approximately one half the drop of the bottom roll. This is more than enough to separate roll 24 from roll I2 so as not to damage the same during idle periods.

Having thus described my invention and the advantages thereof, I do not wishv to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. A set of squeeze rolls comprising a standard, a lower lever pivoted thereto at one end of the lever, an upper lever similarly pivoted to the standard, a roll on each lever, the rolls being yadvanced toward each other as the levers are swung to mutually approach, means to swing the levers to move the rolls toward each other, the roll axes being arranged on a line, the pivots of both levers to the standard being at the same side of the line, and means including a vertically disposed rod independent of and abutting the upper lever and actuated by the lower lever to rise as the lower lever drops, to raise the upper lever and thereby cause both rolls to move away from each other upon inactivation of said lever swinging means' Y v,

2. A squeeze'iroll assembly comprising asupport, a first roll rotatably mounted on said support, a rst arm pivotally mounted on said support above said rst roll, a second roll rotatablymounted on said rst arm above said rst roll, asecond arm pivotally mounted on said supportfbelowsaidiirst roll, a third roll rotatably monted'onsaid, second f arm, said rolls being in substantial vertical alinement, the pivotal axes of said arms :beingat one side of said rolls, a lever pivotally mounted adarm having-afree end in'position to becontacted by the lever of the lowermost roll as the latter -drops by gravty, thus rocking the arm, a lift rodons the arm, and means on the rod to contact and raise the'lever of the uppermost roll.

5.. Afsqueezesroll .construction comprising, a

""frame-a;plurality?f rolls mounted on said frame in substantiallywertically superposed relation, the

Y uppermost and `lowermost of said rolls being supjacent its mid-point on said support withone-endl i beneath said second arm?. for engagement by said second garni, Ta :linkp'ivotally` connectedto Iitl-1e other end'o'fssaid lever llandi'sextendingupwardly therefrom, 'means on s aidfligrrkvforf engaging said first-arm to raise saicl rstianm'whenthe` lever Viis actuated by the second armfandmeansqfor A urging said "armsfandfthe@relis-, carriedf therebyftoward saidrrirstl-roll.

35A squeeze roll constructioncomprising- 9.55111@- port, 'arroll'rotatably ,mou-nted :on: said suppoItf-a lever; pivotally mounted o n saidisupport-iabove said rol-lj for fpivotal'.movementqtowardvandj from said'rojll, a-sec0nddever'piyotallymounted'on said support -below,-said rollvforpvotal :movement: tofwardland @W251i from said `roll,-' afroll .carried Eby veach of :said: levers,` saidy rolls being irl-"substantial alignment with each other, the roll-0 11 -.said -v lower lever beingspaced from; thegpivot ofsaicl-lever so thatl the f'weight of vsaid rollnrges f the:l lowerflever andtheroll carried-therebyeawayfrom -saidrst named roll; aghi-rd lever,pivotally-Pmountedfadjacent vits midpoint enfsed'suppertwithonefarm .beneath the lower: leven, a. linl;v connecting -.the other-afm of seid t 1 dtflevetfwith .sadiupper lever whereby dropping-Qi the levenlever raises r-the vupper,lever-fandthe rollj carried thereby awayfrom ,the ifi-rst;'married1 roll andrmeans operatively con- 'portedfor movement toward and away from each o'tlier,'power means, means connecting said power means to said uppermost and lowermost rolls for moving; said uppermost :,an'd :lowermost rolls .toward :each other, fandfadditional'means operatively connec-teolfto ,sai-d uppermost fandv :lowermostirolls independently ofsaid last-mentioned?rmeansvand including fagpart :pivoted about 'a -fixediaxisa said additional means being operative to .impartupward movementjyto lg-said uppermost roll upon downward?r movement ofesa-id.-lowerrnostV roll.

' VEIAROLD-IiIBE'lliGI-IlfiR.

f. REFERENGESCITED ii'herfo'llowing: referencesixarefr of 'record' in fthe 'liile of @this :patent: Y

" UNITED 'STTES "PATENTS `-Number 1 Y- Name f Date 339,230 stanbrougn T 2A-pms; 188s 655,534 n Wells e .Aug.7, 1900 2,138,397 `.L cannity Noi/29, 1938 FGREIGN -PATENTS Number l Country Date "13273 Italy., of41885 "22;338 GreatBritai-n i` 1895 56,017 Germany Apr; 27.111891 455,226

"Germany "Feb.118,.1928

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