US1941724A

US1941724A - Winding machine

Info

Publication number: US1941724A
Application number: US508495A
Authority: US
Inventors: Ernest R Swanson
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1931-01-13
Filing date: 1931-01-13
Publication date: 1934-01-02
Anticipated expiration: 1951-01-02

Description

Jan. 2, 1934. E. R. SWANSON WINDING MACHINE Filed Jan. 13, 1931 2 Sheets-Sheet l 4 z, f j T Jan. 2, 1934. E. R. SWANSON WINDING MACHINE Filed Jan. 13, 1951 2 Sheets-Sheet 2 ZzizzZZ; 1'

Patented Jan. 2, 1934 1 UNITED STATES WINDING MACHINE Ernest R. Swanson, Cranston, R. 1., assignor to Universal Winding Company, Boston, Mass, a corporation of Massachusetts Application January 13,

12 Claims.

This invention relates to improvements in winding machines and particularly to so-called surfaceor drum-driven winders in which the cop, cone, cheese or package of yarn, thread or 5 the like is rotated by peripheral contact with. a drive-roll or drum. 1

I In the present specification and claims the term package is to be construed broadly as applying to any form of wound mass, and the term yarn as including all kinds of strand materials.

A principal object of the invention is to provide means for preventing the rotation. of the package in a direction opposite to that in which it is normally driven by the drive-roll after it has been removed from driving contact therewith.

Another object of the invention is to provide detent-means which operate automatically to prevent the reverse turning of the package after it has been removed from driving contact with 7 2 the drive-roll or drum should the end of the yarn from the package be caught on the roll or other going part of the machine.

Another object of the invention is to provide an improved dogging-means of simple construction which is maintained in inoperative position during the rotation of the package in one direction and automatically actuated when the rotation of the package is arrested to throw it into position to cam or brake against the cop-tube or other yarn-receiver to prevent reverse rotation of the package. 7

Another object of the invention is to provide a device of the type specified which is adapted for use with cop-tubes or yarn-receivers of usual type without alteration in the form or structure thereof.

Further objects of the improvement are set forth in the following specification which describes a preferred form of construction of the invention, by way of example, as illustrated by the accompanying drawings. In the drawings:

Fig. l is a view illustrating the essential elements of a winding machine with the present invention applied to use therewith and showing the cop-tube or yarn-receiver in peripheral contact with the driveor traverse-roll from which it is driven and by which the yarn is traversed on the package;

Fig. 2 is a similar view showing the cop-tube or yarn-receiver raised away from the driveor traverse roll and operated upon by the detentmeans to hold it from reverse rotation after the winding operation has been arrested;

Fig. 3 is a plan view showing the winding-spindle tilted or rocked to doffing position and illus- 1931. Serial No. 508,495

trating the holdingor latching-means as released from the cop-tube to permit dofiing of the package;

Fig. 4 is a fragmentary view of the windingspindle showing it in operative position with the latching-means engaged with the cop-tube;

Fig. 5 is an enlarged side view of the shank end of the winding-spindle showing the cop-tube or yarn-receiver in section and illustrating the detentor dogging-means as operative thereon to 55 restrain the package from reverse rotation;

Fig. 6 is an enlarged cross-sectional view of the winding-spindle taken on line 66 of Fig. 5 and showing the cop-tub or yarn-receiver in peripheral contact with the driveor transverse-roll during the winding of a package, with the detent-means or dog held inoperative by the rotative action of the tube;

Fig. '7 is a similar view showing the cop-tube or yarn-receiver as raised away from the driveor transverse-roll to arrest thewinding operation and illustrating the manner in which the dog is swung on its pivot to cause it to cam against the inner rim of the cop-tube to prevent reverse rotation thereof; 8

Fig. 8 is an enlarged perspective view of the dog; and

Fig. 9 is an enlarged perspective View of the latch which retains the cop-tube or yarn-receiver in place longitudinally of the winding-spindle.

' In winding machines of the surfaceor drumdriven type the cop, cone, cheese or other form of package is rotated by contact of its surface with a continuously driven drive-roll or drum, and to arrest the winding the package is lifted or otherwise moved bodily away from the drive-roll.

In the operation of machines of this type it frequently happens that when the yarn breaks its end is caught on the drive-roll, the roll-shaft, or some other going part of themachine and wound thereon to reel it off from the package by rotating the latter in a reverse direction after it has been lifted out of contact with the drum or drive-roll.

In such event a considerable amount of yarn may be unwound from the package, causing waste of the material and frequently obstructing or clogging th mechanism of the machine. For example, the yarn may be unwound from the package and wound onto the drive-roll to build up a ridge or bunch which prevents the proper contact of the package with the surface of the roll when the winding is again started unless the waste yarn is removed from'the roll. Occurrences of this short interfere with the proper operation of the machine. requiring more attention on the part of the operator and reducing the output or productive capacity of the winder. To avoid such conditions the present invention provides a novel and ingenious means for preventing reverse rotation of the cop-tube so that when the end of the yarn or other strand is caught on a moving part it will be broken rather than unwound from the package and wasted.

Referring to the drawings, in Figs. 1 and 2 the reference numeral 2 designates the cylindrical driveor transverse-roll of the machine which is carried on and rotated from a continuously-driven shaft 3. The shaft 3 is journaled in bearings 4 which are supported from brackets lspaced at intervals along the bed of the machine. The winding-spindle 5 is arranged in opposite relation to the drive-roll 2, being usually hinged to the end of a swinging arm 6, as at 11, to adapt it to recede from the roll as the package increases in diameter; Referring to Fig. 3, a spring-member 13 secured to the arm:6 is provided with a V- shaped finger 14 adapted to snap into a notch 15 at the end of the shank 8 of the spindle 5, see Fig. 4, whereby to holdthe latter in parallel relation with respect to the drive-roll or drum 2.

In the present illustration of'the invention the winding mechanism is shown as adapted for winding tapered packages or cones and for this purpose a frusto-iconically shaped tube or yarnreceiver X is applied to the winding-spindle 5.

=It-is tobe'understood, however, that the'present :deviceis equally well adapted for'use with other forms 'of yarn-receivers such as parallel-sided tubes, spools, bobbins or'the like.

The cone tube X as herein shown'is bored axially at .r to adapt it to be mounted on bushings or rollers '7 rotatably journaled on'the spindle 5.

'Oneof the rollers 7. abutsa shoulder at theend of the shank .8 of the spindle 5 and aseparating sleeve. 9 spaces the otherroller 7 outwardly there- Ifrom where .it :is held in place by a =collar or :washer '12. tube X is .formed with an enlarged counterbore c Theilarger orbase end of the'coneto adapt it to receive the fiat shank 8 of the spindle t5; the squared end of the shank :serving as an abutment to hold the tube from axial zmovement'in one directiOn on the spindle. 'The :counterbore c'in the tube X is undercut at-c to provide an inwardly-directed annular flange f with which the latching-device 30,-to'be later'described, co-operates to hold the tube from outward movement on the spindle. The cop-tube X may be constructed of any-suitable material such as wood, fiber or the like and is usually provided with'a peripheral groove-or concavity e .at'its base end-for receiving=a few turns of the first end of the yarnwhich may belater unwound for splicing it to another cop or package.

The flat shank 8 of the winding-spindle 5 is formed with a pair of opposite parallel ribs 25 projecting laterally therefrom, see Figs. 3 and'fi.

Pivoted on a pin 26 extending between the ribs 25 is the tube-holding latch 30, shown in detail in Fig. 9. The latch 30 has ears 31 at oneend bent or folded at right-angles to its main portion which is bowed slightly into arcuate form.

The ears 31 have alining holes 32 through which the pin 26 extends whereby to pivot the latch 30 between the ribs 25. The rearward edges of the ears 31 are inclined at an angle to the main portion of the latch to provide cam-faces 33 adapted to be engaged by the finger 14 of the spring-member 13, previously described, as the spindle 5 is rocked on its pivot into dofiing position as shown in Fig. 3. The engagement of. the

- tour.

the cop-tube X to act against the inwardly directed flange f to secure the tube longitudinally in place on the spindle 5 during the winding operation, and to be automatically withdrawn from the groove as the cam-faces 33 strike against the end of the spring 13 during the outward movement of the spindle to doffing position. The latch 30 is rocked into operative position to engage its hooked end 34 with the flange f on the tube X- under the action of a plunger 33 slidable in a bore 39 in the shank 8 of the spindle. The plunger 38 is urged outwardly bya helical spring 40 pocketed in the bore 39, it being noted that the latch 30 is limited its outward movement under the action of the plunger by means of a stop-pin 41 extending between the ribs 25 on the spindle 5.

The winding machine is provided with suitable means ior traversing the yarn longitudinally of the cop-tube X to deposit it in helical coils extending from end to end thereof in the usual manner of a cross-wind. As herein shown, the winding mechanism comprises only two principal elements, namely, the winding-mandrel or spindle 5 on which the yarn-receiver or coptube X rotates and the drive-roll 2 iorrotating the yarn-receiver, and in which is embodied the means for traversing the yarn back and forth axially of the package being wound. In this construction the usual reciprocating thread-guide is dispensed with and the drive-roll 2 has its peripheral surface provided with connected helitation of the package is organized and arranged as next described. Pivotally mounted at the shank end of the spindle 5 is a weighted. dog 45 shown in detail in Fig. 8. The dog i5 is pivoted on a pin or stud 45 riveted through the side of a finger or arm 10 projecting downward from the side of the shank 8 of the spindle 5. The dog 45 is of substantially triangular shape in side view, its bottom portion 47 being of arcuate con- The lower arcuate face 47 of the dog 45 is formed slightly eccentric with respect to its pivotal axis on the pin 46 as best shown in Figs. 6 and '7. The eccentric lower face 47 merges into the straight sides of the dog with rounded corners to avoid sharp edges liable to catch on the interior rim of the flange f in the cop-tube during the rotation of the latter as the package is being wound. As shown in Figs. 5 and 8, the lower curved face 4? of the dog 45 is beveled or chamfered oil on its side at 43 to permit the flange f on the cop-tube to slide thereunder as the tube is placed on the spindle 5. The lower eccentric surface 47 of the dog 45 is adapted to cam against the inner rim of the flange 1 whenever there is a tendency to rotate the package in the wrong direction after it has been raised away from the driveor traverse-roll 2, the manner of func- This form of traversing means tioning of the device being as explained in corn nection with the explanation of the method of operation of the-complete winding mechanism.

To prepare the machine for winding a package the cop-tube or yarn-receiver X is placed on the spindle 5 with'its bore engaging the rollers or bushings 7 while the spindle is raised away from the drive-roll 2 on its arm 6 and swung on its pivot 11 to the positionshown in Fig. 3. It willbe observed by reference to this latter view that when the spindle 5 is thus swung outwardly the V -shaped end 14 of the spring 13 engages with the inclined cam-faces 33 on the latch 30 to swing the forward end thereof inwardly against the action of the plunger 38. The cop-tube X can then be slid along the spindle 5 until'the inner side of its counterbore c abuts the shouldered end of the shank 8 with the finger 34 on the end of the latch 30 entering the enlarged counterbore c in position to engage with the annular flange I. As the tube X is placed on the spindle 5 the dog 45 is positioned within the recessed end of the tube, the edge of the flange riding across the bevel 48 to swing the dog upwardly' whereby its lower eccentric face 47 will engage within the rim of the flange.

The spindle 5 is now swung forwardly from the position shown in Fig. 3 to a position in alinement with the axis of the roll 2, thus causing 'the end of the spring 13 to be released from the cam-faces 33 on the latch 30 whereby the spring-plunger 38 will swing the latch outwardly from the side of the shank 8 to engage its finger 34 in back of the annular flange f at the end of the tube X, see Fig. 4. With the finger 34 thus positioned within the groove at the rear of the flange f the cop-tube X is held longitudinally in place on the spindle while being free to rotate on the rollers 7. As the spindle is swung into operative position the end of the spring 13 will ride across the end of its shank 8 to engage its finger 14 with the V-shaped notch 15 whereby to hold the spindle in parallel relation to the axis of the drive-r011 or drum.

The end of the strand of yarn y is fastened to on its pivot 46 by the frictional contact of the flange 1 against its lower eccentric face 47. The rotation of the tube X thus tends to maintain the dog '45 from binding against the inner rim of the annular flan e 1 so that it has no camming effect to resist the turning movement of the tube in the proper direction.

The weight of the arm 6 and other parts connected thereto exerts sufiicient pressure to maintain a frictional driving contact between the surface of the tube X, or the yarn mass wound thereon, and the periphery of the driveor traverse-roll 2. As the cop-tube X is rotated from the roll 2 .it winds on the yarn and the strand y will be picked up in one or the other of the grooves 27 and 28 in the roll to be traversed thereby back and forth longitudinally of the tube to deposit it in helical coils extending from end to end of the package in the manner as fully described'in the patent previously referred to.

.Suitable instrumentalities, not herein shown,

are usually provided for automatically arresting the operation of the winding machine when the strand breaks or its supply is exhausted and also when the package reaches the desired size. Such means operate to raise the spindle 5 to lift the package off from the roll 2 to interrupt the driving contact. When this action occurs and the spindle 5 is lifted into a position as illustrated in Figs. 2 and '7, the speed of the cop or package slackens and it comes to rest with the loose end. of the yarn y suspended therefrom. Now, shouldi the free end of the strand y become caught on% the roll 2 or its shaft 3, or tangled in any other going part of, the machine, it will tend to rotate the tube X in a reverse direction as indicated. by the arrow in Fig. '7 to unwind the yarn from the package. As the tube X comes to rest, however, the dog is influenced by the force of gravity to maintain its eccentrically-disposed bottom face 47 against the annular rim of the flange and any tendency of the tube to rotate in a reverse direction will cause the dog to cam against and grip the rim to resist such rotation. The yarn will therefore be broken to prevent unwinding of any considerable length from the package. Waste of the material is thus avoided and the yarn prevented from winding back on the roll 2 to build up a ridge liable to interfere with proper contact of the package on the drive-roll when it is desired to again start the winding operation.

It is further to be noted that when the rotation of the package is arrested the action of the dog 45 is such that it does not prevent turning of the package in the normal direction. This is important since it is frequently found convenient to turn the package by hand to find the broken end. That is to say, should the yarn be broken at or near the surface of the rotating package it will adhere thereto and it frequently happens that the package comes to rest in position with the broken end on its side opposite from the operator. With the present device the operator can turn the package slowly while lightly draw ing the hand across its surface to recover the broken end.

When the winding operation is arrested by raising the package off from the drive-roll 2, as shown in Fig. 2, the spindle 5 may be swung outwardly on its pivot 11 to dofiing position as illustrated in Fig. 3. Under this action the V- vshaped finger 14 of the spring 13 will ride out of the notch 15 in the end of the spindle 5 and come to rest at the side thereof to yieldably hold the spindle in this position. As the spindle 5 is thus swung outwardly to dofiing position the end 14 of the spring 13 strikes the cam-faces 33 on the end of the latch 30 whereby to rock the forward end of the latter inwardly against the pressure of the spring-plunger 38. This movement of the latch 30 disengages its finger 34 from the groove 0' in the cop-tube X to release it from the annular flange J. The tube X may then be defied or removed from the spindle 5 by sliding it off therefrom and an empty cop-tube or yarnreceiver placed in position thereon to prepare the machine for winding another package.

It will be observed from the foregoing that the present invention provides an improvement in the art by preventing accidental or unwarranted unwinding of the material from the package being wound to cause waste or to hinder or prevent the proper operation of the machine when the winding is again started. The improvement not only provides against wasting the yarn or other material, but also conserves the time of the operator which would be spent in unwinding or pulling off the waste yarn coiled about the drive-roll or entangled in other parts of the machine. The invention thus eliminates one source of loss of production on the winder and its use results in important economies in the operation of machines of the type specified.

As still another feature of improvement, the dogging-means for automatically preventing reverse rotation of the package may be employed with cop-tubes of ordinary type without alteration in their form or structure. The doggingdevice is of simple construction and avoids the use of springs or other instrumentalities for controlling its automatic operation.

While the improved device is herein shown and illustrated as embodied in a preferred form of construction, the structure and arrangement of its parts are susceptible of modification without departing from the spirit or scope of the invention. Therefore, without limiting myself in this respect, I claim:

1. In a winding machine, the combination of a spindle for rotatively supporting a yarn-receiver having a recess in its end, means for rotating the yarn-receiver in a given direction to wind a package thereon, and means mounted in position to enter the recess in the yarn-receiver when the latter is placed on the spindle to adapt it to cam against a portion of the yarn-receiver to prevent its rotation in the opposite direction while permitting it to turn in the normal direction.

2. In a winding machine, the combination of a winding-spindle for rotatively supporting a yarn-receiver, means for rotating the yarn-receiver having a recess in its end in a given direction to wind a package thereon, and means carried on the under side of the spindle in position to enter the recess in the yarn-receiver and 0perative under the action of gravity to cam against the receiver to prevent the latter from rotating in a direction the reverse of normal.

3. In a winding machine, the combination of a cop-tube having a recess in its end, a spindle for rotatively supporting the cop-tube, means for rotating the cop-tube in a given direction to wind 2. package thereon, and means pivotally suspended on the under side of the spindle in position to enter the recess in the cop-tube and adapted to frictionally engage the tube when its rotation is arrested to prevent the turning of the tube in a direction opposite to normal while permitting it to turn in the normal direction.

4. In a winding machine, the combination of a winding-spindle, a yarn-receiver rotatable on the spindle and provided with an annular recess in its end, means for rotating the yarn-receiver in a given direction to wind a package thereon, and dogging means disposed within the recess in the receiver to adapt it to contact with a portion thereof to prevent rotation of the receiver in a direction the reverse of normal.

5. In a winding machine, the combination or" a winding-spindle, a cop-tube rotatable on the spindle and formed with an annular recess in its end, means for rotating the tube in a given direction to wind a package thereon, and a dog pivotally mounted on the spindle to adapt it to engage with the rim of the annular recess in the tube during the rotation of the latter in a normal direction and to earn thereagainst to prevent rotation of the tube in a direction opposite to normal.

6. In a winding machine, the combination of a winding-spindle, a cop-tube rotatable on said spindle and provided with an annular recess in its end, means to rotate the cop-tube in a given direction to wind a package thereon, an eccentric dog pivoted on a fixed axis and normally engaging with the rim of the annular recess in the coptube during its rotation on the spindle, said dog adapted to cam against the cop-tube to prevent its rotation in a direction opposite to normal.

'7. In a winding machine, the combination of a winding-spindle, a cop-tube rotatable on said spindle and provided with an annular recess in its end, and a dog pivotally mounted on a fixed axis and formed with an eccentric cam-face engaging the rim of the recess in the cop-tube, said dog acting to allow the cop-tube to rotate in a normal direction and arranged to cam against the rim of the tube to prevent its rotation in a reverse direction.

8. In a winding machine, the combination of.

a winding-spindle, a cop-tube rotatable on the spindle and provided with an annular recess at its end, and a dog mounted on an axis eccentric to the axis of the spindle and formed with a cam-face adapted to engage the inner rim of the annular recess in the cop-tube, said dog permitting free rotation of the tube in one direction but acting to cam against the rim of the tube to prevent its rotation in the reverse direction.

9. In a winding machine, the combination of a winding-spindle provided with a lateral projection, a cop-tube rotatable on the windingspindle and provided with an annular recess in its end, and a dog pivoted to the projection on the spindle and formed with a cam-face arranged eccentrically with respect to its pivot and adapted to bear against the annular rim of the recess in the tube to prevent reverse rotation of the latter.

ll). In a winding machine, the combination of a winding-spindle, a cop-tube rotatable on the spindle and formed with an annular recess, a dog pivoted on an axis eccentric to the axis of the winding-spindle and having a cam-face arranged eccentric to its pivotal axis, said dog arranged with its cam-face normally engaging the annular rim of the recess in the cop-tube and adapted to be actuated by gravity to bind against said rim to prevent the cop-tube from turning in a direction opposite to normal.

11. In a winding machine, the combination of a winding-spindle, an arm projecting laterally from the spindle, a weighted dog pivoted to the side of said arm and provided with an arcuate face arranged eccentrically with respect to its pivotal axis, and a cop-tube adapted to be mounted on the winding-spindle and provided with an annular recess in its end the rim of which is engaged by the arcuate face of the dog to adapt it to cam thereagainst to prevent the reverse rotation of the tube on the spindle.

12. In a winding machine, the combination of a winding-spindle, a dog pivotally mounted on an axis eccentric to the axis of the windingspindle and provided with an arcuate face arranged eccentrically with respect to its pivotal axis and beveled off on its side, and a cop-tube adapted to be mounted on the winding-spindle and provided with an annular recess in its end. the rim of said recess being adapted to engage the beveled side of the dog as the cop-tube is placed on the spindle to swing said dog into position to engage its eccentric cam-face with the inner periphery of the recess in the tube.

ERNEST R. SWANSON.