US1973328A

US1973328A - Feed for bobbin winding machines

Info

Publication number: US1973328A
Application number: US701172A
Authority: US
Inventors: Herbert F Borg; Dugald E Walker
Original assignee: LYSETH THREAD Co
Current assignee: LYSETH THREAD Co
Priority date: 1933-12-06
Filing date: 1933-12-06
Publication date: 1934-09-11
Anticipated expiration: 1951-09-11

Description

Sept. 1934. H. F. BORG E 1- AL I FEED FOR BOBBIN WINDING MACHINES Filed, Dec. 6, 1933 2 Sheets-Sheetv l Jnuentov's Herbert F. Ber Dm walk 60 Sept. 11, 1934. H. F. BORG E'TAL 1,973,328

FEED FOR BOBBIN WINDING MACHINES Filed Dec. 6, 1933 ZSheets-Sheet 2 ET] 10 I. I

3R v sa I v v nuentor's FIE: 1 Herbert, F. Bor

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(lttov'n q Duqadd a. wa\ kev' Patented Sept. 11, 1934 PATENT OFFICE FEED FOR BOBBIN WINDING MACHINES Herbert F. Borg and DugaldE. Walker, Worcester, Mass., assignors to Lyseth Thread Company, Worcester, Mass.

Application December 6,

1933, Serial No. 701,172

11 Claims. (Cl. 242-43) This invention relates to improvements in feed mechanism for bobbin or spool winding machines and it is the general object of the invention to provide simple and efficient mechanism for moving a bobbin or spool longitudinally with respect to the traverse of the thread eye.

Certain bobbins or spools are provided with a flange at one end which is disposed at an angle of approximately 45 to the barrel or cylindrical part of the spool, and with such spools it is necessary to effect a relative movement between the traverse stroke of the thread eye and the. tube or spool as yarn accumulates on the barrel of the spool. As set forth herein'we cause the thread eye to have its traverse movement in a given space for all diameters of the yarn on the spool, and move the latter longitudinally as the diameter of the wound yarn increases.

It is an important object of our present invention to achieve this result by a simple relation .of cams one of which is moved an amount proportional to the increasing diameter of the spool and moves the other to cause longitudinal shift of the spool.

It is a further object of our invention to provide the winding spindle or shell for the spool with a hollow chamber to receive a spring around the driving shaft effective to hold the cam faces in close contact with each other so that the feed will be uniform.

It is another object of our invention to derive a force for moving the spool longitudinally from a relatively broad roll which engages the wound yarn over a substantial area to bridge any depressed portions or irregularities in the wound surface, thereby causing the rotary or driving cam to have a smoothaction on the driven cam.

With these and other objects in view which will appear as the description proceeds, our invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein we show two types of control for the driving or rotary cam,

Fig. 1 is a side elevation of a spool winder having the preferred type of our invention applied thereto,

Fig. 2 is a vertical section on line 2--2 of Fig. 1 looking in the direction of the arrows,

Fig. 3 is a horizontal section on an enlarged scale on line 3-3 of Fig. 1, showing the empty spool with the driving and driven cam in closed relation,

Fig. 4 is a view similar to Fig. 3, but with the spool substantially filled a open relation, I

Fig. 5 is a section on line 5-5 of Fig. 3,

Fig. 6 is a diagrammatic view similar to a portion of Fig. 2, but showing a modified arrangement for actuating the cams, and

Fig. 7 is a detailed section on line 77 of Fi 5.

Referring particularly to Fig. 1, we have shown a fixed frame 10 supporting a traverse cam 11 5 with a groove 12 to receive a traversing pin 13. The cam rotates with a shaft 14 and is driven by reduction gearing not specifically shown but contained in the casing 15. A thread eye support 16 has arms 17 and 18 movable about the axis of shaft 14 to swing toward and from the axis of the spool being wound. The lower end 19 of arm 18 may be rendered effective to hold the thread eye 20 against the spool S for all diameters of yarn on the spool.

A groove 21 in the upper edge of the support 16 receives a rod 22 which is fast with the traverse pin 13 and the outer or right end of this rod, as viewed in Fig. 1, has upstanding therefrom an eye arm 23 at the upper end of which is located the thread eye 20. A brace 25 secured tothe support 16 may extend along the arm 23 and pass through an overhanging finger 26 of arm 23 to brace the thread eye.

The driving mechanism is illustrated at the left of Fig. 1 and includes a belt 30 operatively connected to the reduction gearing 15 and also driving the pulley 31 to impart rotation to shaft 32. The latter is journaled in the upper part of the frame 10 and can be connected to the driving mechanism by means of a shipper handle 33 connected to a shaft 34 rotatable in bearings 35 projecting upwardly from the frame 10. It is not deemed necessary to illustrate the operation of the shipper mechanism,'as the same is well under- 95 stood and it is sufficient to state that the movement of the handle backwardly or away from the observer as viewed in Fig. 1 is sufficient to connect the main driving pulley 36 with the shaft 32 and reduction gearing. 100

The thread eye, may be formed specifically as shown in Fig. 3 with a V-notch 38, and has the left hand edge 39 thereof beveled or inclined at an angle which agrees more or less with the angle of the flange 40 on the tube or spool S. By this 5 construction it is possible for the notch in the eye to reach the end of the cylindrical part of the spool as indicated in dotted lines in Fig. 3.

The matter thus far described is well understood and-of itself forms no part of our invention. 11

nd with the cams in I the groove to the spool barrel.

During normal running operations rotation of the cam 11 will cause the thread eye to move back and forth along a horizontal path the range of which along the axis of shaft 32 remains substantially fixed, although the eye will move outwardly away from this axis as winding continues.

In carrying our invention into effect we provide means for moving the spool along the axis of the driving shaft 32 as the thread T increases in diameter. Accordingly, we secure to the frame 10 a stud 50 having a shoulder 51 and receiving a bearing 52 of a yoke lever 53. The bearing is located between and positioned by the shoulder 51 and a collar 54 secured to the stud. The right arm 55 of the lever is bifurcated and receives a small shaft 56 on which is rotatably mounted a relatively broad roll 57. The latter is free to rotate between the bifurcations 58 which support the shaft 56, and projects sufficiently beyond said arms to have engagement with the thread being wound.

The other arm 60 of the yoke 53 has the upper end thereof connected as at 61 to a chain or other form of flexible connector 62. The latter extends over a reduced hub 63 of a driving or rotary cam 64 which is free to rotate about the shaft 32. This cam has an involute face 65 which engages a similar corresponding face 66 on a second cam 67 also mounted on the shaft 32. The second or driven cam has threaded thereinto a screw 68 which supports a roll 69 positioned to travel along and be held in contact with an elongated stop 70 secured to the frame 10. This stop 70 restricts angular motion of the cam 67 around shaft 32.

As shown in Fig. 5 the shaft 32 may be somewhat enlarged to receive the bores of the

cams

64 and 67, and the shaft may also be provided with a slot '75 to receive a roll 76 turning on a pin 1'7 threaded as at '78 into a spool spindle or shell 79. The slot '75 is long enough to accommodate any longitudinal movement of cam 67 which can be caused by driving cam 64. I

The outer end of the shell 79 has an enlarged bore 80 defining a shoulder 81 against which presses the inner or left hand end, as viewed in Fig. 5, of a compression spring 82. The outer end of this spring bears against a head 83 fastened to or forming a part of the shaft 32. The head fits snugly in and has sliding relation with the bore ,80, and the spring tends to move the shell and both cams to the left, as seen in Fig. 5, fixed stop or hearing 100 limiting action of the spring.

In operation, the cam parts are placed in the position shown in Fig. 3, the spring 82 being effective to hold the parts normally in this position by reason of its expansion away from the fixed head 83 and its consequent movement of shoulder 81 and therefore the sleeve 79 and cam 67'to the left as viewed in Figs. 3 and 5. The parts are so proportioned that when the spool is located in its inmost position, or to the extreme left as viewed in Fig. 3, the roller 57 will just bear on the cylindrical part of the spool S. By means of the shipper mechanism the winder will then be set in operation to rotate the shaft 32 and the latter by reason of the roll 76 and pin 77 will cause rotary motion of the sleeve 79. The sleeve has a frictional fit with the internal bore of the spool and the latter is therefore caused to rotate. The thread eye at the same time traverses along the spool, and the thread T is delivered through As the latter continues to rotate the depth of the thread will increase and there will result an outward movement of the roll 57 away from the axis of the spool. This will move the arm 60 and therefore the flexible connector 62 away from shaft 32 and in such a direction as to cause the rotary or driving cam 64 to have a partial rotation. Inasmuch as the stop 70 prevents angular movement of the cam 67 the latter will be moved axially along the shaft 32 against the action of spring 82. The cam 67 abuts the adjacent end of the sleeve, and the latter therefore slides along the shaft 32.

The action just described continues until the required diameter of thread is wound on the spool. Throughout the winding operation cam 64 will be given a. steady uniform rotary motion, thereby effecting a smooth regular motion on the part of cam 67. There results a gradual shift of the spool proportional to the increasing depth of the thread, and the thread guide or eye 20 moves up to the flange 40 regardless of the depth of the thead. In this way a tight package of thread can be wound upon the spool.

As shown in Fig. 6 we may operate the cam 64 by a slightly different connection. therein the flexible connector 90 is trained around the bottom of the hub 63 in a direction opposite.

As shown to that for the chain 62, and is led directly to traverse of the thread guide, this mechanism in-' cluding a driving cam preferably coaxial with the spool and rotated by an amount proportional to the depth of thread on the spool to move the spool along its axis. It will further be seen that the broad roll 56 is wide enough to engage the highest parts of the thread without being affected by any lowerareas on the wound surface, the result of which is to give the cam 64 a smooth angular motion which will insure a uniform wind of thread to produce a hard compact package on the spool. It will further be seen that the spring 82 acts to keep all of the cooperating parts in close operating relation with respect to each other so that there is no lost motion, a further condition assisting in the formation of a correctly wound spool.

The slot '75 is of such length that the roll 76 stops upward movement of the sleeve before the cam face 65 reaches the end of the face 66. The purpose of this relation is to prevent the rotary driving cam 64 from ever reaching a position where the spring will not act to restore the parts from the position shown in Fig. 4 to that shown in Fig. 3.

Having thus described our invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and we do not wish to be limited to the details herein disclosed, but what we claim is:

1. In a spool winder having a traversing thread eye, a rotatable spindle to hold the spool, a pair of coacting cams coaxial with the spindle and means dependent upon the increasing diameter of the thread on the spool to cause the relative movement of the cams to effect longitudinal movement of the spindle with respect to the traversing movement of the thread eye.

2. In a spool winder having a traversing thread eye, a rotatable spindle to hold the spool, a cam rotatably mounted to be coaxial with the spindle, means to move the cam by amounts proportional to the increasing depth of the thread on the spool, and means interposed between the cam and the spindle to move the latter as the cam is moved to effect a shift of the spools relative to the traverse of the eye.

3. In a spool winder having a traversing thread eye, a spindle rotatably mounted to support a spool, a cam coaxial with the spindle and mounted for rotation, a roll to engage that part of the spool opposite the thread eye, connections between the roll and the cam to give the latter angular movements proportional to the increasing depth of thread on the spool, and means to render the cam effective by rotary movement thereof to shift the spindle and spool relatively to the traversing eye.

4. In a spool winder having a traversing thread eye, a rotatable spool supporting spindle, a pair of coacting cams coaxial with the spindle, means to prevent angular motion of one of said cams about the axis of the spindle in one direction, the other cam being rotatable in both directions of said spindle, means to rotate said other cam by an amount proportional to the depth of the thread wound on the spool, rotation of said other cam effecting longitudinal movement of the first cam and the latter efiecting an axial shift of the spools relative to the traversing eye.

5. Ina spool winder having atraversing thread eye, a rotatable spool supporting spindle, a pair of cams having coacting surfaces said cams coaxial with the spindle, the first of said cams operatively related to the spindle and movable along the axis of the latter and the other cam rotatable about the axis of the spindle, and means dependent upon the amount of thread on the spool to give the second cam angular movements proportional to the amount of yarn on the spool to effect a longitudinal movement of the first cam and spindle relatively to the traversing eye.

6. In a spool winder having a traversing thread eye, a rotatable spool holding spindle shiftable along the axis thereof, a pair of cams coaxial shiftable therealong, a fixed member, a pair of cams coaxial with the shaft andinterposed between the fixed member and the sleeve, said cams having coacting involute cam faces, and means to cause one of said cams to have a rotary movement relative to the other proportional to the increasing diameter of the thread on the spool and thereby eflective to move the sleeve along the shaft,

8. In a spool winding machine having a rotatable shaft, a spool supporting sleeve movable longitudinally of the shaft to receive a spool, a part to be moved away from the axis of the spool by amounts proportioned to the amount of yarn wound on the spool, a cam operatively connected to said part to be movable by the latter as the spool increases in diameter, the cam eflective to move the sleeve longitudinally of the shaft, and a spring acting on the sleeve to hold the same in operative relation with respect to the cam and tending to move the latter to cause said part to be held evenly against the yarn on the spool.

9. In a spool winder having a traversing eye, a rotatable spindle to hold the spool, a pair of coacting cams to move the spindle longitudinally of the axis thereof to move the spool with respect to the traversing thread eye and a stop to prevent the cam faces from moving to-relative inoperative position.

10. In a spool winder having a traversing eye,

a rotatable spindle to hold the spool, a pair of coacting cams to move the spindle longitudinally of the axis thereof to move the spool with respect to the traversing thread eye and a stop to prevent the cam faces from moving to relative inopera=- tive position, and a yielding means effective when the spindle is in an extreme position and limited by the stop to tend to move said cam surfac and spool toward the other extreme position of said spindle.

11. In a spool winding machine having a rotatable shaft, a sleeve mounted about the shaft shiftable therealong, a fixed member, a pair of cams coaxial with the shaft and interposed between the fixed member and the sleeve, said cams hav-