US2301699A - Traverse motion - Google Patents

Description

Nov. 10, 1942. s. H. HELLAN D TRAVERSE MOTION Filed Sept. 29, 1941 3 Sheets-Sheet l Nov. 10, 1942. s. H. HELLAND 4 TRAVERSE MOTION Filed Sept. 29, 1941 3 Sheets-Sheet 2 I INVENTOR.

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Patented Nov. 10, 1942 UNITED STATES PATENT OFFICE Application September 29, 1941, Serial No. 412,766

7 Claims.

This invention relates to machines for Winding threads into packages, and relates more particularly to improved means for traversing the threads as they approach the winding rolls.

My invention is shown herein as applied to a winding machine of the lip-twister type, with twister spindles and winding rolls disposed at both sides of the machine.

It is one object of my invention to provide an improved traverse motion which is of exceptionally strOng and rigid construction and which is adapted to simultaneously control the thread traverse at both sides of a machine. A further object is to provide a traverse motion so designed as to effectively resist wear and to avoid lost motion or back-lash between the parts thereof. I Another object is to provide improved means for adjusting the traverse motion to progressively shorten or progressively lengthen the traverse at both ends of the travel of the traverse guides, so that packages having oppositely tapered ends may be produced.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a side elevation of parts of an uptwister having my improved traverse motion applied thereto;

Fig. 2 is a detail sectional end elevation, taken along the line 2--2 in Fig. 1;

Fig. 3 is an end elevation, partly in section and taken along the line 3-3 in Fig. 1;

Fig. 4 is a detail sectional view of a resetting device, taken along the line 4-4 in Fig. 3; and Fig. 5 is a plan view, partly in section and looking in the direction of the arrow 5 in Figs. 1 to 3.

Referring to Figs. 1 and 5, I have shown parts of an up-twister comprising a frame F which supports a plurality of twister spindles ID on which yarn spools S are mounted for rapid rotation thereby. A thread T is drawn upward from each yarn spool S through a guide-wire I l. The

' thread T then passes through a traverse guide l2 of a usual type having both ends tapered and 55 having the threads cross-wound to produce a firm structure from which the thread windings will not be easily displaced. In winding such a package, it is customary to make the initial thread layers substantially of the full length of the package and to progressively reduce the length of successive layers at both ends thereof. In some cases, however, the initial layers are made the shortest and successive layers are gradually lengthened at each end, which produces a package of similar shape but with the ends of the package somewhat more firmly held from displacement. My improved traverse motion is equally well adapted for producing either of these two types of package.

The parts thus far described are or may be of a usual commercial construction, my present invention relating particularly to the provision of improved means for simultaneously and oppositely reciprocating the traverse bars l3 at the two sides of the machine.

For this purpose, I provide a wabble cam 20 (Fig. 5) fixed on a cam shaft 2| rotatable in fixed bearings 22 which are mounted in and supported by an extension frame F (Figs. 1 and 5) The driven winding shaft I5 is connected to the shaft 2| through a pinion 24 (Fig. 5), an intermediate gear 25 mounted on a stud 26 and having a pinion 21 rotated thereby, and a gear 28 on the cam shaft 2 I. The cam 20 is thus rotated in fixed speed relation to the winding shaft l5 and to the winding rolls I4.

I will now describe the devices for reciprocating one of the traverse bars 13. A cam roll 30 (Fig. 5) is mounted on a stud 31 carried by a slide 32 which is mounted to reciprocate in fixed uideways 33, mounted on or forming a part of the extension frame F. A stud 35 is carried by the slide 32, and the outer end of the stud 35 projects into a block 36 which fits loosely in a vertically extending guideway 38 in a lever 40. The lever 40 has a hub portion 4| mounted to swing on a fixed horizontal bearing member 42 supported by the extension frame F.

A nut 44 fits loosely in a second vertically extending guideway 45 on the opposite side of the lever 40. The nut 44 is provided with a stud 46 extending into a block 41 fitting loosely in a vertically extending guideway 48 in a guide member 49. The member 49 is secured in turn to a second slide 50, mounted for reciprocation in a slotted portion 5| of the extension frame F. A link 52 connects the slide to the associated traverse bar I3. v

A bumper 54 is mounted on the slide 50 and engages one or the other of a pair of compression springs 55 on a fixed guide-rod 56 to cushion the movement of the slide at each end of its path of travel.

Through the connections described, the cam will reciprocate the slide 32 and cause it to move through a fixed path of travel. The slide 32 will act through its stud 35 to swing the associated lever through a fixed arc of movement. Such movement of the lever 49 causes the stud it on the nut 44 to move the second slide 5% back and forth over a path of travel the length of which is determined by the vertical position of the nut M, which in turn is determined by mechanism which I will now describe.

It will be understood that all of the operating connections between the cam 25] and the traverse bar [3 are duplicated at the opposite side of the machine. The tWo traverse bars are moved simultaneously but in opposite directions.

For the purpose of adjusting each nut i i, I provide a screw 5i] mounted in a bearing in the swinging lever 40 and having its lower end threaded into the nut it. At its upper end, the screw 69 is connected by bevel gears iii to a cross shaft 52 having a bearing in the member 52 previously described and also having a second or middle bearing 63. The adjusting screw iii at the opposite side of the machine is similarly mounted and is similarly connected through bevel gears ll to a second cross shaft E2. The cross shafts 52 and 12 are in alignment and are connected through bevel pinions M and E5 and a bevel gear 75.

With this construction, the screws 6% and if! will be simultaneously rotated and in the same direction, effecting equal and corresponding vertical adjustments of the nut 44 in the lever if! and of the corresponding nut in the second lever til The means for automatically adjusting the screws 55 and l'fl comprises a worm gear 89 loosely mounted on the screw Hi but normally secured to the screw by a sliding clutch collar v 8| keyed to the screw. The worm gear 89 is engaged by a Worm 82 mounted on a short shaft 83 which also supports a ratchet 8d. The shaft 83 is mounted in a bearing on the lever 491 and oscillates therewith.

A bell crank 85 is pivoted to swing about the axis of the shaft 83 and is loosely pivoted thereon between the ratchet 84 and the adjacent end of the shaft bearing (see Fig. 3), one arm of the bell crank supports a spring-pressed feed pawl 85. The second arm 85 of the bell crank 55 extends downward between a fixed abutment 88 (Fig. 1) and an adjustable collar 89.

As the lever 49 swings to the left (Fig. l), the arm 85 is engaged to move the feed pawl 86 anti-clockwise in a return or idle stroke, the extent of which is determined by the position of the collar 89. As the lever 46* swings to the right (Fig. 1), the arm i5 engages the fixed abutment 88 and gives the 'ratchet 34 a clockwise feeding movement, the extent of which is determined by the length of the rearward or idle stroke of the feed pawl.

A spring-pressed plunger 9% mounted on the lever forces a brake-shoe SH against a brake drum 92 associated with the ratchet 8 This constitutes a holding device for the ratchet.

The feeding mechanism above described provides means for turning the screw it! a. predetermined amount at each movement of the lever 46 to the right, and the gear connections effect similar adjustment of the screw 60. Such movements lift the nuts 44 in the two levers 49 and til thus raising the studs 45 and shortening the stroke of the traverse bars.

It it is desired to start with a short traverse and to gradually increase the length thereof, this may be easily accomplished by reversing the ratchet 84 and the feed pawl 36.

Resetting of the device after the winding of a package has been completed is readily accomplished by pressing down on a hand lever I00 (Fig. l), which lever engages and lifts the clutch collar 8!, thus freeing the screw 'Iil from the worm gear 80. The screws 50 and Hi may then be turned simultaneously backward by means of a handle 802 (Fig. 4) mounted on a short shaft I9 3, which in turn is connected to the shaft 12 by bevel gears I05.

From the foregoing description, it will appear that I have provided an improved traverse motion which takes the form of a rigid self-contained unit and which comprises devices which may be directly connected to traverse bars on opposite sides of a machine and which will reciprocate said bars simultaneously but in opposite directions. I have also provided automatic means for either shortening or lengthening the traverse stroke as the winding proceeds, and a device for disconnecting said automatic means when it is desired to reset the traverse motion.

If it is desired to build a package for straight ends, the feed pawl 235 can be manually moved to the left (Fig. l) and given a quarter turn to hold the pawl out of contact with the ratchet 84, so that rotation of the screws to and 10 will not take place.

When it is desired to complete a package with tapered ends, the feed pawl is returned to operative position, providing intermittent rotation of the feed screws 60 and thus moving the blocks ii upward and nearer to the axis of the shaft 52 about which the levers i5 oscillate. This reduces the effective motion of the blocks il and correspondingly and progressively shortens the traverse of the yarn on the package being wound. As the winding of the package proceeds with a progressively shorter traverse, the tapered ends automatically result.

Mechanism thus constructed has been found very effective and satisfactory for its intended purpose. t has also been found that the parts are subject to very slight wear, and that lost motion or back lash does not readily occur nor interfere with the satisfactory operation of the mechanism.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the de ails herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a winding machine, a traverse bar, an actuating cam, a slide receiving a reciprocation of fixed length from said cam, a lever receiving an oscillation of fixed are from said slide, a second slide connected to said traverse bar, an operating connection between said lever and said second slide,'and means to vary the effective action of said lever on said second slide.

2. In a winding machine, a traverse bar, an actuating earn, a slide receiving a reciprocation of fixed length from said cam, a lever receiving an oscillation of fixed are from said slide, a second slide connected to said traverse bar, an operating connection between said lever and said second slide, and means to adjust one end of said operating connection toward or away from the pivotal axis of said lever.

3. The combination in a Winding machine as set forth in claim 2, in which a second traverse bar and a second set of similar operating devices are provided at the opposite side ,of the machine, and in which means is provided to simultaneously and equally adjust the operating connections to both oscillating levers.

4. The combination in a winding machine as set forth in claim 2, in which a second traverse bar and a second set of similar operating devices are provided at the opposite side of the machine, and in which means is provided to simultaneously and equally adjust the operating connections to both oscillating levers, said latter means including an adjusting screw in each lever and gear connections to effect simultaneous rotation of both screws in the same direction.

5. In a winding machine, a traverse bar, an actuating cam, a slide receiving a reciprocation of fixed length from said cam, a lever receiving an oscillation of fixed are from said slide, a second slide connected to said traverse bar, an operating connection between said lever and said second slide, a stud on said lever on which one end of said connection is pivoted, a screw on said lever operative to adjust said stud toward or away from the pivotal axis of said lever, automatic means to advance said screw at each complete oscillation of said lever, and manual resetting means for said screw.

6. In a winding machine, a traverse bar, a slide, means to reciprocate said slide in a fixed path, a second slide connected to said traverse bar, transmitting devices interposed between said two slides and efiective to cause a movement of said second slide in predetermined ratio to the movement of the first slide, and automatic means to progressively vary said ratio.

7. In a winding machine, a traverse bar, a slide, means to reciprocate said slide in a fixed path, a second slide connected to said traverse bar, and transmitting devices interposed between said two slides and effective to cause a corresponding reciprocating movement of said second slide, both of said slides moving simultaneously in one direction and then both moving simultaneously in the opposite direction, and means to variably determine the ratio of the lengths of the simultaneous movements of said two slides.

SIGURD H. HELLAND.

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