US2357079A

US2357079A - Winding apparatus

Info

Publication number: US2357079A
Application number: US349074A
Authority: US
Inventors: Odell T Brown
Original assignee: EI Du Pont de Nemours and Co
Current assignee: EIDP Inc
Priority date: 1940-08-01
Filing date: 1940-08-01
Publication date: 1944-08-29
Anticipated expiration: 1961-08-29

Description

Aug. 29, 1944. Q BROWN 2,357,079

WINDING APPARATUS Filed Aug. 1, 1940 4 Sheets-Sheet l Odell TBrouJn INVENTOR ATTORNEY 1944- o. T. BROWN 2,357,079

WINDING APPARATUS Filed Aug. 1, 1940 .4 Sheets-Sheet 2 'odez z 775mm INVENTOR ATTORNEY o. T. BROWN 5 79 WINDING APPARATUS Filed Aug. 1, 1946 4Sheets-Sheet s Odell TBmwn INVENTOR I ATTORNEY Aug. 29, 1944.

o. T. BROWN wimame APPARATUS Filed Aug. 1,1940

4 Sheets-Sheet 4 Odell 775mm INVENTOR ATTURNEY Patented Aug. 29, 1944 UNITED STATES PATENT. OFFICE WINDING APPARATUS Odell T. Brown, Old Hickory, Tenn, asslgnorto E. I. du Pont de Nemours & Company, Wilmington, Del., a corporation of Delaware Application August 1, .1940, Serial No. 349,074.

Claims.

the winding operation in order to improv the,

running qualities of the yarn in this and subsequent operations.

However, the application of the oil or other liquid to the yarn in a satisfactory, uniform manner has proven difficult. In a winding machine, the core upon which the yarn is to be wound is frequently mounted upon a spindle that is driven at a constant speed throughout the entire winding operation. Hence, the linear. speed of the yarn being wound upon the cone increases as the package is built up. The increase in speed of th yarn from start to finish is dependent upon the size of the yarn package formed, and in some cases, the speed increases 400%, or even more. Thus, to apply the oil uniformly to all parts of the yarn being wound upon the cone, it is necessary to soadjust the rate of application of the oil as to compensate for this increase in speed of the yarn.

It is an object of the present invention to provide an improved means for regulating the quantity of liquid applied to'a yarn during the winding operation.

It is also an object of this invention to provide a means of continuously applying a regulated quantity of liquid to a yarn.

Other objects of the invention will appear hereinafter.

The objects of the invention are accomplished, in general, by passing the yarn, during the winding thereof, into contact with the flat, end face of an oiling disc which is rotating in an oil bath, and continuously increasing the chord of contact of the yarn with the disc face as the speed of the yarn increases. Throughout the specification any reference to the face of the oiling disc refers, of course, to the flat, end face thereof as distinguished from the circular edge of the disc since it would be impossible to increase the chord of contact of th yarn with the circular edge thereof.

The following written description of the invention will be more readily understood if taken in connection with the accompanying illustrations wherein Figure 1 is a front elevational view of the yarn from a supply package l3.

winding positions of a winding machine embodying the present invention.

Figure 2 is a side elevational view; with parts shown in section, of a winding machine embodying a device constructed according to the principles of the present invention.

Figure 3 is a plan view, showing in detail, one means whereby the motion of the traverse back is utilized to control the movement of the yarn 10 over the surface of the oiling device.

Figure 4 is a plan view, showing in detail, another means whereby the motion of the traverse back may be utilized to control the movement of the yarn over the surface of the oiling device.

15 Figure 5 is a side elevational view, with parts shown in sction, of a winding machine fitted with a modified form of the present invention.

Referring to Figures 1 and 2-of the drawings, reference numeral ll designates a yarn drawn Numerals l5 and I1 designate fixed yarn guides which may be fixed to the frame of the machine or to the oil tank 25. Numeral I9 designates an oiling disc which is positioned for rotation within the oil tank 25.

The disc I9 is mounted on rotatable shaft 2|, and

may be fastened to said shaft by means of a set screw or the like positioned in shoulder 23 of the disc IS. A movable yarn guide 21 is positioned above fixed yarn guides 15 and H. The

oiling disc I9 is positioned between yarn guides l1 and 21 in such a manner that the face of the oiling disc will be maintained in contact with the yarn ll between these two guides. A yarn tensioning device 4| is positioned above movable 5 yarn guide 21 and a fixed thread guide 42 is positioned above the yarn tensioning device. The yarn tensioning member may be of any desired type; however, preferably a yarn tensioning member of the type disclosed in the copending application of Arthur E. Guenther, Serial No.

309,653, filed May 24, 1938, now U. S. Patent No. 2,223,912, is used for imparting of a tension to the yarn. The yarn tensioning member of the above-said Guenther patent comprises a flexible 45 pinch tensioning blade which is connected by linkage elements to a pivoted yarn traversing mechanism. As th diameter of the yarn package increases, the yarn traversing mechanism moves about its pivot point and-thereby shifts the linkage elements to decrease the tension on the yarn by reason of the pressure of the flexible pinch tensioning blades. As the yarn builds up on the package and the linear speed of the yarn being wound increases, the tension on the yarn is gradually reduced. The yarn is then passed over a yarn bail guide 43 which is positioned above fixed yarn guide 42. The yarn is then passed through reciprocating yarn guide 45 which is mounted for reciprocation in the pivoted traverse back 35 in a known manner. The reciprocating yarn guide 45 traverses the yarn while it is being wound on a rotating yarn package 41. The yarn package 41 is wound on a yarn supporting member 43 mounted on a spindle 49 which is rotated at a constant speed.

The movable yarn guide 21 is mounted on a system of levers 23, which levers are pivoted at 3| to the arm 32 which is fixed on the weight 33. The weight 33 is integral with the pivoted traverse back 35. The traverse back and weight are pivoted at 31 to the frame- 39 of the winding machine.

The operation of the winding apparatus shown in Figures 1 and 2 is substantially as follows: The yarn II is drawn from the fixed package l3 and is passed upwardly through fixed yarn guides l and I1. The yarn is then passed across the face of oiling disc H, which disc is continuously rotated within oil tank 25. The oil, or other thread size or finish, is transmitted to the yarn from the disc l9, and the yarn is maintained in contact with the disc by fixed yarn guide l1 and movable yarn guide 21. The movable yarn guide 21 is progressively moved during the winding operation in such a manner that the yarn will gradually contact an increasingly large surface of the oiling disc Hi. This is clearly illustrated in Figure 2 of the drawings. The yarn, at the beginning of the winding operation, contacts the disc overth chord A-B. As the yarn builds up on the package, the movable yarn guide is gradually shifted so that at the end of the yarn winding operation the yarn cuts acrossdisc l9 over the chord CD. The lever members 29 which connect the movable yarn guide 21 to the pivoted weight 33 are adapted to shift the yarn guide as the weight 33 is shifted about pivot 31. The yarn is passed through tensioning device 4|, thence through fixed yarn guide 42 over bail guide 43 and through the reciprocating yarn guide 45 which is maintained in contact with the yarn package being wound and traverses the yarn back and forth across the package as the package is rotated.

Referring to Figure 3 of the drawings, the movable yarn guide 21 is shifted in the direction of the arrow positioned adjacent thereto and through the following leverage mechanism: Lever arm 5| is pivotally mounted in the pivoted traverse back weight 33. As the weight 33 is shifted in the direction of the arrow positioned adjacent thereto, the lever arm 5| is drawn along withthe weight, thereby transmitting a pull on the bell-crank arm 51. The arm 5| is pivoted to bell-crank arm 51 at one of the positions 55. The arm 5| is provided with a pivot connection 53 which connects the same to bell-crank arm 51. The bell-crank arm 51 transmits an upwardly directed movement to rod 65 through the slot 6| of the bell-crank lever and pin 63 connected to the rod 65. The pivot point of the bell-crank lever is fixed by means of arm 59. The rod 65 is adapted to slide in an opening in member 51. The member 61 is rigidly attached to the framework 63 of the winding machine. It is thus readily apparent that the yarn will be shifted in the manner shown in Figure 2 by means of the leverage mechanism shown in Figure 3, and the shifting is controlled by the motion of the counterweight 33 as the yarn package builds up, Thus, a linear 7 contact by the yarn of disc I9.

Referring to the modified form of leverage mechanism for movement of the movable yarn guide 21, shown in Figure 4 of the drawings, the yarn guide 21 will be shifted in the direction of the arrow positioned adjacent thereto upon movement of the counterweight 33 in the direction of the arrow shown at that point. The lever member 1| is pivoted to counterweight 33 at one end thereof. At the other end thereof the lever member 1| is pivoted at 13 to the curved lever arm 15. The lever arm 15 is Divotally mounted at 35 on fixed arm 8|. The arm 8| is fixed to the frame 82 of the winding machine by means of bolts II. The lever arm 81, which is connected to the movable yarn guide 21, is pivoted at 85 to the curved lever member 15. The lever arm 81 is adapted to pass through an opening in the angularly disposed element 89 fixed to the rigid member 8|.

As the counterweight 33 shifts in the direction of the arrow, arm 1| pulls arm 15 about pivot 13 and thereby pulls downwardly on arm 81 which is pivoted to the oppositely disposed end of arm 15. The movable yarn guide 21 is thus moved downwardly in the direction of the arrow adjacent thereto.

Referring to the modification shown in Figure 5 of the drawings, the movable yarn guide 21 is mounted for vertical movement, instead of horizontal movement, as shown in Figure 2 of the drawings. It will be readily apparent that the movable yarn guide 21 may be moved either vertically or horizontally to gradually increase the surface contact of the yarn with the oiling disc as the speed of the yarn increases due to increase in build up on the yarn package. The movable yarn guide 21 may be moved vertically by connecting between the yarn guide 21 and the counterweight 33 a leverage system similar to that illustrated but connected to the counterweight at an angle of 90 in the manner in which the leverage mechanism illustrated is connected to the counterweight.

It will be obvious that any other type of leverage mechanism commonly employed to transmit the substantially straight-line motion to the movable yarn guide may be employed in place of the leverage mechanism as specifically disclosed herewith. It is furthermore obvious that both the direction and extent of motion of the movable yarn guide 21 is dependent upon the adjustment of the system of leverage members, and the invention contemplates any adjustment that is necessary to permit the desired movement of the movable yarn guide as the yarn package is increased in size. In accordance with the specifically illustrated apparatus the yarn guide 21 is made movable and the yarn guide I1 is maintained stationary, so that the yarn between these two guide members will be caused to have an increasing surface contact with the oiling disc. Obviously the yarn guide 21 may be maintained stationary and yarn guide |1 moved for the same purpose. Furthermore, if desired, both guides l1 and 21 may be mademovable to gradually increase surface contact of the yarn with the oiling disc.

According to the preferred method'of operation of the apparatus, the oiling disc I9 is rotated at a constant speed. If desired, however, speed of rotation of the disc may be varied, as the speed of the yarn increases to pick up an increasingly greater quantity of oil. That is, if the movement of the yarn guide or guides, as described above, does not sufliciently compensate for the increase in speed of the yarn as the package is built up, satisfactory compensation may b obtained by increasing the speed of rotation of disc It as the speed of the yarn increases.

Although the invention has been illustrated and descri ed in connection with a winding machine of the zype manufactured by the Universal Winding C npany, the invention is not limited to this typ i r winding machine and may be used to advantage on any type of winding machine in which th ed of the yarn increases as the yarn package is built up,

This invention provides a means of applying an oil or other treating liquid in a uniform manner to a yarn being wound upon a winding machine, the invention providing a means for compensating for the increased speed of travel of the yarn as the yarn package is built up.

The device contemplated by this invention provides for a greater length of contactbetween the yarn and the oiling device than has been possible with previous devices. Hence, a vibration of the yarn passing over the surface of the disc does not result in so large a variation in the amount of oil applied to a given length of yarn.

In passing over the oiling surface of the disc,

the yarn is preferably displaced from its normal,

further reduce the vibration of the yarn against the surface of the disc and thus aids the uniform application of oil to the yarn. This vibration of the yarn against the surface of previously known cylindrical wipers contributes to the non-uniform application of oil to yarn obtained by the use of such a device.

Since, according to this invention, the yarn wipes oil from a vertical surface, any loose or broken ends of yarn fall from the surface of the wiper to the hub or shaft of the device where they do no harm and may be easily removed. In the case of a cylindrical type of wiper, these loose yarns tend to form wraps about the surface of the wiper and thus interfere with the satisfactory operation of the device. In the removal of such wraps, the surface of the wiper is often scratched.

These scratches cut and abrade the yarn passing over the wiper and great care must be taken to insure their removal. As mentioned above, such wraps cannot form on the wiper surface of the disc member constructed according to the principles of this invention. This constitutes a further great advantage of this device over the devices known to the prior art.

The device contemplated by this invention is less expensive than other devices constructed for this purpose. The device is easier to adjust for various size packages of yarn and does not require so accurate a setting as do devices of other types. Hence, the maintenance costs of such a device are also low.

Since it is obvious that many changes and modifications can be made in the above-described details without departing from the nature and spirit of the invention, it is to be understood that the invention is not to be limited to the described details except as set forth in the appended claims.

I claim: 1. In a yarn winding apparatus of the type in which the linear speed of the yarn increases as the yarn package increases in circumference, an -oiling disc, means for passing the yarn in contact with the flat, end face of said oiling disc. and means for gradually increasing the surface of contact a: the yarn on said disc.

2. In a yarn winding apparatus of the type in which the linear speed of the yarn increases as the yarn package increases in circumference, a circular oiling disc, means for passing the yarn in contact with the flat, end face of said oiling disc, the yarn at any instance describing a chord on the circular face of said disc, and means for gradually increasing the chord of contact of the yarn on said disc.

3. In a yarn winding apparatus ofthe type .in which the linear speed of the yarn increases as the yarn package increases in circumference, an oiling .disc, a pair of yarn guides for passing the yarn in contact with the fiat, end face of said oiling disc, at least one of said yarn guides movable to gradually increase the surface of contact of the yarn on said disc.

4. In a yarn winding apparatus of the type in which a linear speed of the yarn increases as the yarn package increases in circumference, an oiling disc, a pair of yarn guides for passing the yarn in contact with the fiat, end face of said oiling disc, one of said yarn guides being stationary, and the other of said yarn guides being movable to gradually increase the surface of contact of the yarn on said disc.

5. In a yarn winding apparatus, a winding spindle, a traverse frame back pivoted to move away from said spindle as 'the yarn package'increases in diameter, an oiling disc, and means connected to said traverse frame back for gradually increasing the surface of contact of the yarn on flat, end surface of said disc.

6. In a yarn winding apparatus, a winding spindle, a traverse frame back pivoted to move away from said spindle as the yarn package increases in diameter, an oiling disc, a pair of yarn guides for passing the yarn in contact with the flat, end face of said oiling disc, and means con- A guides being stationary, and means connected to said traverse frame back for moving the other of said yarn guides to gradually increase the surface of contact of the yarn on said disc.

8. In a winding machine, means for winding a package, means for tensioning a strand of yarn feeding to the package, a container for liquid, a

rotary contact disk partly submerged in the liquid, means for guiding the strand across the radial face of the contact disk, and means actuated by the increase in diameter of the winding package to progressively shiftthe strand toward the axis of the contact disk to increase the extact disk for moistening the yarn, means for guiding the yarn across the radial face of the contact disk, and means actuated by the movement of the traverse frame during the growth or the package to operate the guiding means to shift the strand toward the axis of the contact disk to progressively increase its extent of contact therewith.

10. In a winding machine, the combination of means for winding a package, a container for I liquid, a rotatable disk arranged to dip into the liquid in said container, means for gu ding a strand across the radial face of the contact disk, 7

and means actuated during the winding of a package to shift the strand radially inward on the face of the contact disk to increase its extent of contact therewith.

ODELL '1'. BROWN.