US3307800A

US3307800A - Winding spindle

Info

Publication number: US3307800A
Application number: US419331A
Authority: US
Inventors: Frank A Macedo
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1964-12-18
Filing date: 1964-12-18
Publication date: 1967-03-07
Anticipated expiration: 1984-03-07
Also published as: GB1098359A; DE1435533A1; CH436065A

Description

March 7, 1967 F. A. MACEDO 3,307,300 I WINDING 'SPINDLE Filed Dec. 18, 1964 FIG. I

INVENTOR. FmnkA.Macedq WBM ATTORNEYS United States Patent F 3,307,800 WINDENG SPINDLE Frank A. Macedo, Pawtucket, R.I., assignor to Leesona Corporation, Warwick, R.I., a corporation of Massachusetts Filed Dec. 18, 1964, Ser. No. 419,331 6 Claims. (Cl. 242115) The present invention is concerned with waste yarn winding apparatus and, more particularly, with waste yarn winding apparatus having improved winding spindles.

In the manufacture of yarns and particularly synthetic yarns, a continuous strand of yarn, advancing at a high rate of speed, is produced and taken up on the spindle of a suitable winding machine. Usually in such winding apparatus it is necessary to provide means for taking up the waste yarn and keeping a stress on the advancing yarn when the loaded spindle is being replaced by an empty spindle.

One object of the present invention is to provide waste yarn winding apparatus for use with such winding machines which are of simple structure and can be economically manufactured.

Another object of the present invention is to provide waste yarn winding apparatus comprising spindles having means thereon to facilitate the dotting of the waste yarn.

A further object of the present invention is to provide waste yarn spindles having means thereon for facilitating the doffing of the Waste yarn.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the apparatus possessing the construction, combination of elements and arrangement of parts which are exemplified in the following detailed disclosure, and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawing wherein:

FIGURE 1 is an elevational view of a winding machine incorporating the waste yarn winding apparatus of the present invention; and

FIG. 2 is an exploded perspective view showing a waste yarn spindle within the scope of the present in- .vention.

The waste winding apparatus of the present invention comprises a waste winding spindle having means thereon for facilitating the doffing of waste yarn therefrom, means for rotating said spindle end, in preferred embodiments, means for controlling the rate of rotation. The spindle preferably comprises a tapered body, e.g., a truncated cone having on its surface at least three rods, preferably equally spaced around said body and extending apexially from the base or broad end of the body to the tapered end thereof; the rods being slidably movable along the tapered body towards the tapered end so that yarn wound around the body and rods may be moved on said rods to a portion of the body having a smaller circumference whereat the yarn may be more readily doffed or removed.

Referring now to FIGS. 1 and 2, there is shown a winding machine 4 having therein a waste yarn winding apparatus 6 of the present invention embodying a waste yarn spindle 8. The winding machine generally comprises a pedestal 10 having mounted thereon a housing 12 in which there is located winding mechanism (not shown), such, for example, as disclosed in US. Patent No. 2,740,- 590, issued April 3, 1956 to J. V. Keith for Winding Machine. The winding mechanism comprises means for rotating spindle 14 which is attached to it through shaft 16 and means for operating, in housing 18, a barrel cam (not shown) which by known mechanism guides a 'ice traverse yarn guide (not shown) back and forth along the length of the spindle 14. The winding speed of the spindle 14 is controlled by the tension placed on yarn guide 20, around which the yarn is wrapped during the winding operation. The pressure on yarn guide 20 is transmitted through compensator arm 22 to suitable control mechanism (not shown) such as disclosed in US. Patent No. 2,752,105, issued June 26, 1956 to J. V. Keith.

The waste yarn winding apparatus 6 is mounted on the winding machine 4 by bracket 24 which is attached to the pedestal 10. The mounting may be permanent or temporary, depending upon whether it is desired to provide a separate waste winding apparatus 6 for each winding machine 4 or to use one for many machines. The waste winding apparatus includes a waste yarn spindle 8 which is rotatably attached to a suitable means for rotation. In the embodiment shown, the rotation means is a conventional air-driven motor 28 which is connected to a source of compressed air (not shown) through a pipe 30. The speed of the motor 28 is controlled by a regulating valve 32 which regulates the flow of air through the motor.

In initially starting the winding machine 4 (without threading the waste yarn winding apparatus 6), the yarn is fed from a suitable source (not shown) to yarn guide 34, down through a yarn guide (not shown) on the far side of housing 18, around yarn guide 20, up across the nose piece 36 of the spindle 14 and on to yarn guide 38 to spindle 14. When the spindle 14 is rotated at a sufficiently high speed, an initial thread yarn snagger 40, such as disclosed in US. Patent No. 2,998,202, issued August 29, 1961 to John V. Keith, engages the yarn, cuts it and starts the winding operation on a suitable tube carried by the spindle 14.

When the tube is almost fully wound or it is desired to thread the waste winding apparatus 6, initially, the yarn Y is brought over the tapered body 42 of waste yarn spindle 8 by yarn guides 44, through yarn guides 46 and 47 to yarn guide 20 and then up through yarn guide 48 to the spindle 14 or yarn guide 38 depending upon the phase of the operation. When the tube is fully Wound the waste winding spindle 8 is rotated and the yarn Y is cut by a suitable yarn cutting means between the waste yarn spindle 8 and yarn guide 20. As a result of the cutting, the yarn is taken up on waste yarn spindle 8 and the pressure is released on yarn guide 20. The release of pressure on yarn guide 20 stops the rotation of spindle 14 so that the full tube may be doffed. The dofiing is carried out by pivoting lever 50 which is connected to expansible arbors (not shown) in the spindle 14. When the full tube is replaced by an empty tube, the winding operation may be started by simply forming a loop in the yarn before it reaches the Waste winding apparatus 6 and routing the loop over yarn guide 20, across the nose piece 36 of spindle 14 and around yarn guide 38 back to the waste yarn spindle 8. The pressure of the yarn on yarn guide 20 causes spindle 14 to rotate and activates the initial thread yarn snagger 40 which starts the winding operation. When the yarn is being taken up on spindle 14, the waste winding apparatus 6 may be stopped and the waste yarn removed from the spindle 8.

The waste spindles 8 of the present invention include a tapered body, such as a truncated cone 42 which on its broader or base end is attached to a base cap 52 having somewhat of a larger circumference. At equally spaced points around the circumference, the base cap bears three (two shown) apexially extending slots 54 which are adapted to receive one end of rods 56 (only one shown) which extend apexially along the entire length of the winding surface of the tapered body 42. Towards their second ends the rods 56 are bent back upon themselves to form rearwardly extending portions 58. The truncated end 60 of the cone 42 has an orifice 61 therein which is a adapted to receive one end of stud 62. The stud 62. may be held in orifice 61 by a set screw (not shown) which passes through orifice 64 to threaded orifice 68. The truncated end 60 of the cone 42 and the stud 62 have therein, respectively, three slits 70 and three channels 72 which are circumferentially positioned on their respective elements so as to correspond with the slots 54 in base cap 52. The slits 70 and channels 72 are adapted to receive the rearwardly extending portion 58 of the rods 56 and hold said rods against centrifugal and circumferential movement. The locking action is achieved by having the rearwardly extending portion 58 of the rods extend more rearwardly than the slits 70 so that the ends 74 of the rods 56 will engage the inner walls (not shown) of the truncated cone 42. The end of stud 62 which protrudes outside the truncated cone 42 bears threads 76 which are adapted to receive head cap 78. When head cap 78 is fully tightened on threads 76 the head cap engages the angled end 80 of the rods 56 and prevents their apexial movement.

When it is desired to doif waste yarn from the waste spindles 8 of the present invention, the head cap 78 is removed and an apexially directed force is applied to the yarn and rods 56 to cause them to move towards the truncated end 60. Upon such movement the yarn will be located at a point on the tapered body which has a smaller circumference than the point at which it was initially wound and can be readily removed.

Since certain changes may be made in the above apparatus without departing from the scope of the invention herein involved, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. A yarn collecting device comprising, a sleeve having first and second end portions and adapted to have yarn wound thereon, first and second flanges arranged respectively at said first and second end portions, said first flange being movable into and out of engagement with said sleeve, support means extending longitudinally of said sleeve, said support means being mounted for movement longitudinally of said sleeve when said first flange is disengaged from said sleeve, said support means having a surface protruding above the periphery of said sleeve for engaging the yarn wound on said support means, the yarn engaged on said surface being movable cooperatively with said support means, one end of said support means being slidably received in an opening in said second flange, the opposite end of said support means communicating with said first flange when said first flange is engaged with said sleeve, and retaining means for holding said first flange on said first end portion to thereby secure said support means in a yarn receiving location with said sleeve, said retaining means being releasable to permit disengagement of said first flange from said sleeve whereby the yarn Wound on the sleeve may be moved longitudinally of said sleeve.

2. A device as set forth in claim 1 wherein said support means includes a plurality of members spaced equidistantly around said sleeve.

3. A device as set forth in claim 2 including a plurality of slots spaced equidistantly around said first end portion, each of said members having its end communicating with said first flange formed with a terminal section engaging in an associated one of said slots.

4. A device as set forth in claim 1 wherein said sleeve is a tapered body, said first end portion being at the apical end of said body, and said second portion being at the base end of said body.

5. A device as set forth in claim 4 wherein said support means includes a plurality of members spaced equidistantly around said sleeve.

6. A device as set forth in claim 5 including a plurality of slots spaced equidistantly around said apical end, each of said members having its end which extends beyond the apical end of said sleeve formed with a terminal section engaging in an associated one of said slots.

References Cited by the Examiner UNITED STATES PATENTS 1,951,748 3/1934 Brown et al. 2421 18.11 2,154,343 4/1939 McDermott 2421l0 STANLEY N. GILREATH, Primary Examiner,