US2006754A - Roll changer - Google Patents

Description

July 2,1935. l B. C. WHITE 2,006,754

ROLL CHANGER Original Filed June 20, 1923 4 Sheets-Sheet l QQ'.. (166 /6 s f 125 I IQ,

Snventor July 2, 1935.

B. C. WHITE ROLL CHANGER Original Filed June 20, 1923 4 Sheets-Sheet 2 July 2, 1935. 1 B. c. WHITE 2,006,754

ROLL CHANGER Original Filed June 20, 1923 4 Sheets-Sheet 5 (IttornegS July 2, 1935. B. c. WHIT 2,006,754

ROLL CHANGER Original Filed June 20, 1923 4 Sheets-Sheet, 4

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M I Y 30 3 42 36 32 v 43 1 4&4

(Ittorneg 5 Patented July 2, 1935 UNITED STATES PATENT OFFICE ROLL CHANGER Original application June 20, 1923, Serial No. 646,592, now Patent No. 1,855,503, dated April 26, 1932. Divided and this application March 23, 1932, Serial No. 600,610. Renewed November 13, 1934 6 Claims.

VThis invention relates to certain improvements in mechanisms for feeding webs to printing machines and controlling the feed of the webs from web rolls, and is a division of an application of Bruce Clark white, serial No. 646,592, sied June 20, 1923, on which Patent No. 1,855,503 was granted on April 26, 1932.

The present invention consists in certain novel arrangements of the roll supporting devices by which a plurality of web rolls may be supported and moved from loading to running position withinrelatively small confines, and the invention further consists in certain novel arrangements in combinations which will be fully described in connection with the accompanying drawings and such features pointed out in the claims hereunto annexed.

In these drawings,--

' -Figure 1 is a vertical section ofA a web roll feedying and changing device adapted for a three roll press, each deck being shown with a running roll and a spare roll in different positions; VVAligure 2 is a horizontal section on line 2--2of Figure 1;

Y, posed relation, but it will be understood that this showing is only illustrative and that these roll changers or one of them may be used in other positions and arrangements.

f Generally speaking, the novel features of the present invention consist in the provision of a 40' pair of spaced roll holding heads mounted in bearings without a center shaft, so as to leave a clear space between the heads, these heads being provided with bearings for supporting a spare roll and a running roll.

These roll supporting bearings a-re arranged or positioned in the heads so that the distance from the axis of the heads to the center vof the roll bearings is less than the radius of a full roll of paper. That is, the changer is capacitated `to support a roll of paper the radius of which is greater than the distance between the centers of the web roll supports and the axisV of the head, so that the periphery of a standard full roll of paper may extend inwardly beyond the axis of the heads, such construction permitting the rotating of the heads and the rolls carried thereby in relatively small connes widthwise of the mechanism.

The specific construction and arrangement of the parts may be somewhat varied. In the machine chosen to illustrate the invention there are shown three roll changers, a bottom changer A, a middle changer B, and a top changer C arranged at the end of a three roll or sextuple press, not

shown. y

The mechanism is suitably supported, as from a base plate l, to which are secured upright front and rear frames 2, 3 and a support 4 for the lower spare roll. These frames are or may be tied together by means of outer cross-ties 5, middle cross-ties 6, and inner cross-ties 1, and the outer cross-ties 5 mayY carry extension brackets 8 for temporarily supporting fresh paper rolls marked 9, and a fresh paper roll AIll may also be placed on the support 4.

Referring to the A changer, a fresh roll, of standard size IL'has been rolled inward sufficiently to be secured in the roll holders, which are marked l2, which are shown in the form of a pair of spaced heads. These heads I2 are journalled upon non-rotatable journals 24 andare held against endwise movement thereon by means oi a flange 25 outside the head and a collar plate 2 6 inside the head, as best shown in Figure 4, These journals 24 are fitted to slide freely endwise in hubs Z'l'projecting inwardly on each side from the frames 2 and' 3, but are prevented from rotating therein by a key 28 which has sliding engagement in a keyfway 29 of the bearing, best shown in Figure 2, so that the journals may be moved endwise in the frame hubs by means of a screw 30 to which is attached a hand-wheel 3|,

A sprocket-wheel 32 is also secured to the screw 30 and has a sprocket-chain 33 trained about it and valso about a sprocket 3 4 on each end of a shaft 35 located below the heads, as shown in Figures 1 and 2. By this means, the operator in turning either of the hand-wheels 3l will rotate both screws 30 in the same direction in such a manner as `to move both journals 24 andiconsequently both heads and the rolls of paper mounted Y ing or journal without a cross-shaft between them,

so that the Yperiphery of a full paper roll positioned in the heads `may extend inwardly beyond the Vhead axis", as shown in Figure 1.V This results, as hereinafter referred to, in requiring a much smaller space for rotating the heads, so that the heads andthe paper rolls carried Ythereby may be operated in a very narrow space considered widthwise or khorizontally of the roll msm- The heads I2 are rotatablymountedon their changer mecha- Ybearings and to effect the rotation ofthe heads they are provided with heavy spur-gears having external gear teeth which Amesh in the toothed pinions 38 keyed on a cross-shaft 39Ylocated to one side of the heads. Thisfcross-shaft' has keyed thereto a worm-wheel 40 and the shaft is supported Vin bearings 4I upon the inner cross-tie 1, before referred to, and the shaft is further supported in a journal 42 of the gear box 43,V shown Vin Figure 4. Theworm-wheel 40 engages with va Worm d'formed on a shaft 44, which is driven through a clutch mechanism or in any other suitable manner to effect the rotation'of the heads when desired, a detail description of Vthis being omitted as unnecessary for an understandingof the present invention, this drive, however, in the present instance being from a shaft 18 driven from the press.

'I'he heads I2, in accordance with the invention, are provided Vwith'supports for supporting a spare web` roll of paper `and a running web roll. 'I'hese supports may Vvary in construction'but they will be located so that their centers, as shown in Figure l, are so spacedrelatively to the axis of the heads that they willsupport a roll of paper whose radius is greater thanV the distance between the centers of Vthe roll supports and theaxis of the heads, so that the periphery of Va fresh rollof paper may extend inwardly beyond the head axis.

Inthe particular instance illustrated, the roll supports are positioned in vthe heads ,diametrically' opposite each other and adjacent the'periphery of the heads.

These supports may be of various characters,

` but in the particularconstructionshown they are capacitated to engage an ironvpipe or core, marked I3 in dotted lines in Figure,2',`on which a web roll ofV paper may be wound. In the particular con-l struction shown, these supports include taper plugs I4 which may be forced into the ends of the tube I3'by'meanskof/screws' I5 and hand-wheels I8, whichV have their bearings in plate I1, see Figures'2 and 4. These plugs, as shownin Figures 2 'and4g are preferably rigidly but rotatably mounted in the reels, all spring and likeresilient constructionsv having been omitted. c l

.,fsuitable roll controlling devices may be emplcyed, such being shown in the form of belts 500, i arranged on each side of the vrroll support for controlling the unwindingV of the roll, and pasting and web severing. devices for Jjoining a new webjtoan expiring roll maybe used if desired, the pasting mechanism being shown as a roll V|30 andthe web severing mechanism asa knife I33 inFigure 1. Y

'It will beY seen' *that with the arrangement adopted the roll `changer mechanism may be operated in a very small compass widthwise or horizontally of the mechanism to move a roll from loading to pasting, running and discharge positions. While the `arrangement has been shown in its preferredA form, it will be understood that certain changes'may be made in regard to its form, details of construction and general arrangement without departingv from the invention as defined in the appended claims.

What is claimed is: n y Y 1. In a web roll changing device, the combina,- tion of a pair of independent rotatable web roll supports spaced apart in separate bearings without aicenter shaft, web roll holders held at a fixed Y distance from the axis of the supports for'supportingV a running web roll and a spare web roll,

said roll Vholders being so located relatively to eryof a full roll of paper may extend inwardly to and beyond the axis of the supports, and

means foi-rotating Ithe supports,` and for moving the roll axially.

2. In a web roll changing device, the combina.-

tion of 4a pair of independent rotatable web roll supports spaced apart in separate rbearirzlgs with? out a center shaft, web roll holdersheldfatra fixed distance from the Vaxis of the Supprtsfor supporting a' running web roll and a sparervy'ebA roll, said roll holders being so located relatively Y to the axis of the'supports that they support a roll of paper whoseradiusis greater than the distance between the centersof Vthe roll held-v ers and the axis of the supports; so thatrthe periphery of a full roll `of paper may extend inwardly to and beyond the axis of the suDPQts, means for effecting a relative sidewise movement of the supports, and means for rotatingi'the supports.

'3.' In a roll changing deviceythe combination fof aVv pair of 'rotatable heads spaced apart in` rate bearings without acenter sha-ft, holders secured in the heads adjacent the peripheries thereof for supportinga running web roll anda spare web roll, saidroll'holders being: sov

4. yIn a roll changing device, Athecombinationk of a pairof rotatable headsfspacedapart 'inseparate bearings without a center. shaft, web oll holders mounted in rigid bearings 'in the "heads andadjacent the peripheries lthereof forsiip-y porting a running wehroll .and a spare web rll, said roll holders being so' Ylocated,'relatively[to the axis of the heads thattlie peripher'y ffa. full .web roll will yextend to a pointibeyo'ndY axis, means for effecting aA 'relatively sidewise movement of the heads, meansfor moving fthe' roll holders axially of the roll to hold release the'roll,v and means for rotatingthelf ds.

5.,v In a device' for supportingfalplu'ra'lit .of web rollsV from whichwebsare fed successively to a machine, a pair of roll holding headsfrtatable on separate bearings axially"ali`gned`and movableV axially in unison, and a pair of rollvsp-'j ports for each head adapted to engage'thegc tially common to the axis of the head;v :i j

'meV

6. In a device for supporting a plurality of web rolls from which webs are fed successively to a. machine, a pair of roll holding heads rotatable on separate bearings axially aligned and movable axially in unison, power operated means for rotating the heads, and a pair of roll supports for each head adapted to engage the cores of the web rolls; said supports on each head being oppositely disposed and spaced apart a distance less than the diameter of a full web roll and having their axes in a plane substantially common to the axis of the head.

MARIE LOUISE WHITE, Eecutn'a: of the Estate of Bruce Clark White,

Deceased.

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