US1194249A - smith - Google Patents

Description

w B. SMITH. MANDREL FOR CORES 0F ROLL REWINDING MACHINES.

AP'PLiCATION FILED FEB. 5. 1915.

Patented Aug. 8, 1916.

2 SHEETS-SHEET I.

NJ Q

WITNESSES:

big v.35 B 7 TOR/VEV W. B. SMiTH.

MANDREL FOR CORES 0F RGLL REWINDING MACHINES.

APPLICATION man FEE-5.1915.

1 9 1 9%,2Q9, htented Aug. 8, 1916.

2 SHEETSSHEET 2.

M QM WB/"OWI? 5mm,

' wi ntramr'nown'sr rrn, or earths, waisnrne'r'on.

To all whom itma m p v,

Be it known thatl, WILLIAM Brown Y SMrrn, a citizen of the United St ates,-and a resident of Cama s, Clarke county, State' of Washington, have invented a new and useful Improvement. in Ma'ndrels for Cores of Roll-Rewinding Machines, of whiehthejfollowing is a specification.

My inventionrelates to machines of the type described by me in a co-pending patent application for roll rewinding machine, filed -J anuary 21, 1915, under Serial No. 3657.

he object of my invention is to provide the' mandrel with yielding core-grippers which can be retracted when the mandrel is to be loaded, and are projected when the mandrel is loadedwith cores, so as to hold the latter against slipping on the mandrel.

j The core-grippers must, however," permit the 7 cores to slip somewhat when starting the rewinding process, for otherwise thestrip of material might tear,, and to-this end the core-grippers are made yielding.

It is further my object to arrange the core-grippers helically about the mandrel, so as not to make the mandrel lop-sided or out of round, which would interfere with the efficient work of the mandrel.

A further feature of my invention consists in providing my mandrel with auto-.

matic core-'aliners which work oppositely to the core-grippers, being. projected when the core-grippers are retracted, which is, the

state of the latter when the mandrel is ed; Fig. 2 is apartial top view of the rod carrying the core-grippers and reciprocable within the mandrel for projecting and retracting the core-grippers; Fig. 3 is a larger sized sectional view of the left end of this mandrel. The full lines of this figure show the core-grippers projected, while the broken lines show the core grippers retracted; Fig.

' 4 is a view similar to Fig. 3 showing the right end of this mandrel; Fig. 5 is an end elevation of the mandrel, showing the helical arrangement of the core-gripper n the Specification of Letters Patent.

v the mandrels used fonholding the blank cores of rewinder m'a- 'chines,,being particularly adapted for usefon Mauritian ron oonns or'noLL-nnwmnme meanness.

Patented-Aug. a, rare. Application fi ledl'ehruary 5, 1915. Serial Ito. 6,382. i

mandrel for the purpose of properly positioning the cores on themandrel; Fig. 6 is an end elevation showing in diagram form one way 1n which my mandrel may be mounted and rotated; The mandrel .so far shown :bodying my invention. In this view cores are shown as mounted. on the-mandrel, the

core grippers of which are projected to hold the cores against slipping; Fig. 8 shows the same-type of mandrel with its core-grippers retracted; Fig. 9 is an enlarged cross-section on line 9'9 of Fig. 3 and Fig. 10 is a partial top view showing the left end of'the mandrels shown in Figs. 7 and 8.

The mandrel as a whole is represented by a. It consists of a cylindrical, partly hollowed-out body I) having circumferential, longitudinal slots 0, disposed helically about the body. These are covered at one end-d, by a portion (1', the extremity of which is beveled, asindicated by 0Z in Figs. 3 and 4:.

The right end of the body 6, is counterbored to receive a journal-end e, e, which is secured in place by the tapered-pin f. Such journal end is provided with'an axial bore g, in which reciprocates one end of the rod h, carrying the core grippers z'. The coregrippers, z, are made of a flat-bow-shape spring pivoted at one end on pins j, located in a cavity 70. The left end of the mandrel is also formed with a j ournal'end Z, as shown in Fig. 3. The mandrel is madeof any desired length. It may be made of pieced construction, as shown. at m, in Fig. 3, for con venienceof manufacture; one .part having a dowel-end which fits the socket of the other part. The rod it, extends in 'the'hollow. of

the body I), and is longitudinally movable' in the latter for the purpose of projectlng and retracting the core-grippers t, as lllustrated in Figs. 3 and 4; the movement of the rod h, to the right retracting the coregrippers, as shown by dotted lines, and the movement in the opposite direction pro ecting the core-grippers. For heavy duty man drels I find 1t convenient to provide means for moving the rod h.' The means shown consist of a rack n,'provided at one end of the .rodh, and with which meshes a segmentpinion 0 formed on the lever 0, pivotingin a cavity 0 of the body I), on a pm 0. he extremity or head of the lever 0, has a finger-hole v. In order to lock the lever o in p ate, whe positioned to pro ect the core lot grippers, its head is made with a cavity in which projects a spring controlled lock-pin g, from which the lever may, however, be readily disengaged by pulling it up.

further means for holding the rod 12., in position to retract the core-grippers z, is provided by the expansion coil-spring 1', which bears at one end on a collar 8, fixed on the rod k,,and at the other end against pins t, inserted through the tubular dowelend of the journal end 6. I also provide my mandrel with a core aliner. This consists of a curved arm-u, pivoted in a cavity '2), and

' made with a head w. The rod h has a recess w in which the head of the arm u is normally seated by the action of the spring 3 The rod 71. has a pin 2 which bears on the arm u when the rod 72 is moved to the left. Thus the core aliner and the core-grippers work oppositely to each other, the one being projected when the other is retracted.

To lock the core aliner in place when retracted, it is made with a nose 2 inserted in a cavity 3 of the'rod h. i

In Figs. 7 and 8 is shown the construction of my mandrel designed for light duty. This mandrel consists of a tubular body 4, in both ends of which are inserted journal ends 5, 6. The'journal end 5 is fastened in place by a pin 7, but the journal end 6 1s movable and to it is fastened a rod 8, which has longitudinal movement limited by the set-screw 10, inserted through a slot 11 of the tubular mandrel-body 4. The latter is made with a plurality of slots 12, arranged helically about the body, and relatively to such slots the core-grippers are fastened at one end by pivots 14, in longitudinal space between the two bars 8* of which the rod 8 is made. A detail of construction of the rod 8 is shown in Fig. 10. It consists of two members 8,

as mentioned, spaced apart by the block 8 and the knuckles 13 of the core-grippers 13, through which parts are inserted rivet pins 14 and 21. By seizing the journal-end 6 and pulling the same, and therewith the rod 8, to the right, the core-grippers 13 are retracted within the tube body 4, and by moving the rod 8 in an opposite directidn, the core-grippers are projected. They are shown in projected position in Fig. 7 and in their retracted position in Fig. 8; and in Fig. 7, 15 represents cores being held in place by means of the core-grippers. This type of mandrel may also be provided with a core-aliner, 16, which operates substantially in the same manner as the core-aliner in my mandrel for heavy duty. The core aliner 16 is normally controlled by a spring -17 and is projected by a protrusion 18, on the rod 8. The core aliner '16 is also made with a nose 19, which is inserted in a recess, or cavlty, 20, of the rod 8, for holding the core-alinerin its retracted position.

one way of mounting my mandrel, when it it to be used in actual service. A Y standard 22, has journaled in its lower portion a drive-shaft 23, the driving means not being shown in this View, and'two driven shafts 24 and 25. A gear 26 is fixed on the driveshaft 23, and gears 27 and 28 are fixed on the driven shafts 24 and 25 respectively. The gear 26 meshes with and drives both gears 27 and 28 in the same direction. Fixed on the shafts 24 and 25 are the friction disks 29 and 30, and the bearing ends Z and e of the mandrel rest on said friction disks and said mandrel is driven thereby.

The screws '10 in the head 20, of the aliner of the heavy-duty mandrel and the screw 10 in the head of the aliner 16 of the light duty mandrel, form the stops against which the cores abut, and these stops are adjustable to take up variations in the cores.

I claim:

1. A mandrel having a plurality of circumferentially located yieldingv movable core-grippers adapted to be arranged close to the periphery of the mandrel and to be i projected therefrom, and means for placing the core-grippers in either of such positions.

2. A mandrel having a plurality of circumferentially and helically located movable yielding core-grippers adapted to be arranged close to the periphery of the mandrel and to be projected therefrom, and

means for placing the core-grippers in either of such positions. i

3. A mandrel having a plurality of cir-' cumferentially located movable core-grippers adapted to be arranged close to the pe= riphery of the mandrel and to be projected therefrom, means for placing the core-grip pers in either such positions, a core-aliner pivoted in the cavity therefor provided in the circumference of the mandrel, means for normally holding the core-aliner retracted, the core-aliner having operative connection with said core-gripper placing means, and being projected by the movement of the latter in a direction .for retracting said coregrippers.

cumferentially located m vable, yielding 1 core-grippers adapted tov be arranged close tothe periphery of the mandrel and to be projected therefrom, a movable rod for plac- 7. A mandrel'comprising a hollow body made with a plurality of circumferentially located'slots, a rod longitudinally movable in the mandrel b'ody, resilient core-grippers fastened at one 'end to said rod and, arranged relatively to said circumferential slots, and soas to be projected through the latter and retracted again by the corresponding movement of the rod, and means for moving the rod.

8. A mandrel comprising a hollow body made with a plurality of circumferentially,

helically located slots, a rod longitudinally movable in the mandrel body, resllient bowshape core-grippers fastened at one end to said rod and arranged relatively to said circumferential slots, and so as to be pro-' jected through the latter, and retracted again by the corresponding movement of the rod, and means for moving the rod.

9. A mandrel comprising a hollow body made with a plurality of circumferentially located slots, a rod longitudinally movable in the mandrel .body, resilient bow-shape core-grippers fastened at one endato said rod and arrangedrelati'vely to said circumfer- .ential slots, and so as to be projected through the latter and retracted again by the corresponding movement of the rod, and means for moving the rod. I

10. A mandrel comprising a hollow body made with a plurality of circumferentially,

helically located slots, a rod longitudinally movable in the mandrel body, resllient coregrippers fastened at one end to said rod and arranged relatively to said circumferential n slots, and so as to be'projected through the located slots, a rod longitudinally movable in the mandrel body, resilient core-grippers fastened at one end to said rod and arranged relatively to said circumferential slots, and

so as to be projected through the latter and retracted again by the corresponding move ment of the rod, a spring arranged to-move lthe rod in the direction for projecting the core-grippers, and means for moving the rod in the oppositedirection against the spring.

12. A mandrel comprising a hollow body made with a plurality'of circumferentially located slots, a, rod longitudinally movable 'in the mandrel body, resilient core-grippers [fastened at one endto said rod and arranged relatively to said circumferential slots, and 1 so as to be projected through the latter and retracted again by the corresponding movement of the rod, 9. spring arranged to move the rod in the direction for projecting the 1 core-grippers, anda pivoted lever engaging with the 'rod and adapted for moving the latter against the spring.

13. A' mandrelcomprisin fastened at oneend to saidrod and arranged relativelyto said circumferential slots, and so as to be projected through the latter and retracted again by thecorresponding movement of the rod, a spring arranged to move the rod in the direction for projecting the core-grippers, and a rack-face provided on the rod, a pivoted. lever made with a pinion segment meshing with said rack-face for moving said rod against said spring.

14. A mandrel comprising a hollow body made with a plurality of circumferentially located slots, a'rod longitudinally movable in the mandrel body, resilient core-grippers fastened at one end to said rod and arranged .relatively to said circumferential slots, and

so as to be projected through the latter and retracted again by the corresponding movement of the rod, a spring arranged to move the rod in'the directlon for projecting the a hollow bodymade with a plurality of circumferentiallyi "located slots, a rod longitudinally movable in the mandrel body, resilient core-grippers core-grippers a pivotedleverengaging with the rod and adapted for moving the latter against the spring, and means for locking the lever in place when thrown on its side.

15. A mandrel, comprisin a hollow body made with a plurality of clrcumferentially located slots, a 'rod longitudinally movable in tlie mandrel body,'resilient core-grippers ire fastened at oneend to said rod and arranged relatively to said circumferential slots, and so as to be projected through the latter and retracted again by the corresponding movement of the rod, means for moving the rod, a core-aliner pivoted in the cavity therefor provided in the circumference of the mandrel, means for normally holding the core-aliner retracted, the corealiner having operative connection with the rod and being projected by the movement of the latter in the direction for retracting said core-grippers.

16. A mandrel comprising a hollow body made with a plurality of circumferentially located slots, a rod longitudinally movable in the mandrel body, resilient core-grippers fastened at one end to said rod and arranged relatively to said circumferential slots, and so as to be projected through the latter and retracted again by the corresponding movement of the rod, means for moving the rod, a core-aliner pivoted in the cavity therefor provided in the circumference of the mandrel,'a spring normally holding the core-aliner retracted, the core-aliner having operative connection with the rod and being projected by the movement ofthe latter in the direction for retracting said core-grippers. v

17 A mandrel comprising a hollow body made, with a pluralityof circumferentially located slots, a rod longitudinally movable in the mandrel body, resilient core-grippers fastened at one end to said rod and arranged relatively to said circumferential slots, and so as to be projected through the latter and retracted again by the corresponding movement ofthe rod, means for moving the rod an adjustable core-aliner' pivoted in the cavity therefor provided in the circumference of the mandrel, means for normally holding the corealiner retracted,

the core-aliner having operative connection with the rod and being projected by the movement of the latter in the direction for retracting said core-grippers.

'18. A mandrel comprisin a hollow body made with a plurality of circumferentially located slots', a rod longitudinally movable a core-aliner pivoted in the cavity therefor provided in the circumference of the mandrel, means for normally holding the corealiner retracted, the core-aliner having operative connection with the rod and being projected by the movement of the latter in the direction for retracting said core-grippers,

and an adjustable abutment piece carried by the core-aliner.

WILLIAM BROWN SMITH. Witnesses:.

WM. E. SOEMI'IT, D. E. ORABB.

Images