US2145935A

US2145935A - Yarn winding machine

Info

Publication number: US2145935A
Application number: US155190A
Authority: US
Inventors: Kinsella Edward
Original assignee: Celanese Corp
Current assignee: Celanese Corp
Priority date: 1936-08-06
Filing date: 1937-07-23
Publication date: 1939-02-07
Anticipated expiration: 1956-02-07

Description

Feb. 7,- 1939. E. KINSELLA 2,145,935

ygnn WINDING MACHINE Filed July. 2:5, 1937 E- KlNSELLA INVEKTOR 712 ATTOHAIEYS Patented Feb. 7', 1939- PATIENT OFFICE YARN WINDING MACHINE Edward Kinsella, Spondon, near Derby, England, assignor to Celanese Corporation of America, a corporation of Delaware Application July 23, 1937, Serial No. 155,190 In Great Britain August 6, 1936 3 Claims. (Cl. 242-43) This invention'relates to machines for the winding of cross-wound cheeses, bobbins. and similar packages of yarn.

The yarn winding machine according to the invention comprises a rotatable drum'adapted to roll against the surface of the package, the drum being formed with an endless slot to engage the yarn and traverse it lengthwise of the package during the rotation of the drum, and 'a 1 0 cylinder or roller within the drum and capable of rotation independently of the drum. v

Due to the independent rotation of the inner cylinder, the speed of its periphery, against which the yarn bears as it passes through the slot in the drum, is not dependent on the peripheral speed of the drum and consequently it can accommodate itself (orcan beaccommodated) to the speed of .the yarn. Thus, the inner cylinder may be driven .by frictional contact with the 2Q yarn itself, so as to avoid the'd'rag that would be imposed on the yarn if the cylinder rotated at the same speed as the drum with the consequent difference in the peripheral speeds of the yarnand the cylinder. The yarn, therefore, is not constrained-by the inner'cylinder but is free to move at the rate at which it is taken up on the package notwithstanding the lesser diameter of the inner cylinder as compared with the diameter of the drum.

The; cylinder may, however, bepositively driven at the same peripheral speed as'the yarn, so as to free the yarn from'the necessity to drive the drum, or at some greater or less speed in. order control the tension imparted to the yarn during winding. For example, the cylinder may be driven at a greater peripheral speed than the yarn speed to enable soft-wound packages to be produced. v

The invention enables a large measure of control to be maintained during the building of the package, the continual bearing of the yarn against the inner cylinder keeping the yarn sufllciently deep in the slot to resist any tendency of the yarnto jump out of the slot, and the independent rotation of the inner cylinder enabling the yarn to be-wound under low tension, which is of im-, portance in avoiding tight-wound'packages.

If the inner cylinder 'is to be'driven .by the yarn itself, it may conveniently be mounted on '50 ball or like bearings on a shaft to which are se cured members with inclined faces constituting the slotted drum, the inclined adjacent faces of may be secured on a shaft on which the two drum members are mounted for free rotation, the two members being provided with means by which they are driven at the same speed as each other and at desired speed relative to the inner cylinder.

By way of example the invention will now be described in greater detail with reference to the accompanying drawing, in which Fig. 1 is a diagrammatic end elevation of part of a winding machine constructed in accordance with the invention;

Fig. 2 is a slightly enlarged cross-sectional elevation of the rotatable drum taken on the line 2-2 of Fig. 1;

Fig. 3 is a slightly enlarged cross-sectional elevation of the rotatable drum showing an alternative construction;

Fig. 4 is a reduced diagrammatic view of the drum shown in Fig. 3 in driving connection with part of the winding machine.

Referring to Figs. 1 and 2, a package support -I is carried by a spindle 2 in an arm 3 pivoted on a shaft 4. The support I is supported on a yarn traversing drum consisting of two members 5 and 6 supported on the shaft I by hubs -8 and 8. The members 5 and 6 are formed with inclined faces and are secured to the shaft 1 with the inclined faces slightly spaced apart so as to form an endless slot I0. Within the drum 5, 6 is a'cylinder or roller II mounted for free rotation on the shaft 1 on ball bearings I2 housed in hubs I I. In'the alternative construction'shown in Figs. 3 and 4, the drum members} and i are mounted for free rotation on a shaft ll, the drum members 5 and 6 being provided with bushes ii and it supported in hubs I1 and I8. Secured to the hubs I1 and I8 are gears I9 and 20 meshing the gears II and 22 secured to a shaft 23 so that "by rotation of the shaft 23 the drum members I and 6 are rotated in constant speed relationship.

4 cylinder or-roller 24 is mounted within the drum I, 8 and is secured to the shaft I4.

I In operation the package support I by reason of its frictional contact with the rotating drum 5, 6 draws yarn 25 from a supply package (not shown) through-"the endless slot ll between the drum members 5 and Ii, the rotation of which causes the yarn 25 to be traversed back and forth along the length of the support I to form a crosswound package 26. 'As 'winding continues and the package consequently increases in diameter, the centre of the packagemoves with the arm 3 abcutthepivotlasindicatedbydotanddasb lines in Fig. 1. the full package being represented by the line 2?.

: During its passage through the slot it, the yarn 25 bears against the inner cylinder H (or 2 which enables'a low degree of penetration of the yarn 25 within the slot ill to be maintained and at the same time enables the yarn 25 to be kept at a constant depth within the slot it which resists any tendency of the yarn to jump out of, the slot during winding. The inner cylinder H (or 26) by maintaining a small depth of penetration of the yarn 25 within-the slot it,

limits the degree of variation during the growth of the package of the uncontrolled length of yarn extending from the periphery of the drum 5, 6 tothe point of contact with the package 26, 2? i. e. the length extending from the point a to the point D in the case of the small package 26, and from the point e to the point d in the case of the large package 21,-and thus enables good winding conditions to be maintained.

It will be seen that due to the independent rotation of the inner cylinder H, (or M), the speed of its periphery, against which the yarn 7Z5 bears during its passage through the slot it, is not dependent on the peripheral speed of the drum 5, 6 and consequently it can accommodate itself (or, where it is positively driven, can be accommodated) to the speed of the yarn. Thus, when the inner cylinder is freely mounted on the shaft 1 as shown in Fig. 2, the cylinder H is free to be rotated by the pull of the yarn so that, apart from the light force necessary to rotate the freely mounted cylinder II, the yarn is not constrained by the inner cylinder but is free to move at the rate at which it is taken up on the package notwithstanding the lesser diameter of the inner cylinder as compared with the diameter of the drum 5, 6. 1

By using the positively driven inner cylinder 24 shown in Figs. 3 and 4, however, the yarn may be almost entirely freed from drag by driving the inner cylinder 26 at exactly the same peripheral speed as the yarn, or, on the other hand, a controlled degree of tension may be imparted to the yarn by driving the inner cylinder 2% at a different peripheral speed from that of the yarn, for instance, the inner cylinder Zt may be driven at a greater peripheral speed than the yarn speed so as to avoid tight-Wound packages.

Having described my invention what I to secure by Letters Patent is:-

1. Apparatus for the production of a cross- Wound package of yarn, comprising a rotatable drum adapted to roll against the surface of the package, the drum being formed with an endless slot for engaging the yarn and traversing it lengthwise of the package during the rotation of the drum, and a cylinder concentric with respect to and within the drum and capable of rotation independently of the drum. v

2. Apparatus for the production of a crosswound package of yarn, comprising a rotatable drum adapted to roll against the surface'oi the package, the drum being formed with an endless slot for engaging the yarn and traversing it lengthwise of the package during the rotation of the drum, and a cylinder freely mounted within the drum and concentric with respect thereto and adapted to be rotated by frictional contact with the yarn during winding;

3. Apparatus for the production of a crosswound package of yarn, comprising a rotatable drum adapted to roll against the surface of the package, the drum being formed with an endless desire .slot for engaging the yarn and traversing it lengthwise of the package during the rotation of the drum, a cylinder concentric with respect to and within the drum, and means for driving the cylinder independently of the drum.

mwann KINSELLA