US2979276A - Sliver delivery unit for stationary balling head - Google Patents

Description

April 11,, 1961 G. BIDER I 2,979,276

SLIVEER DELIVERY UNIT FOR STATIONARY BALLING HEAD Filed Jan. 17, 1955 2 Sheets-Shet 1 Fig. 1

INVENTOR. 0m MN! 724 G. BIDER 2,979,276

SLIVER DELIVERY UNIT FOR STATIONARY BALLING HEAD April 11, 1961 2 Sheets-Sheet 2 Filed Jan. 17, 1955 Fig. 3

Fig.2

.m m. w m W E M N v .K W S o m 4 N I. n LAn A 0 w w Y B M/ United States PatentD SLIVER DELIVERY UNIT non STATIONARY BALLING HEAD Gianni jBider, CorsoMatteotti 1A, ,Milan, Italy Filed Jan. 17, 1955, Ser. No, 482,343

Claims -priority,.application Italy Dec. 18, 1954 3 Claims. or. 242-544 This invention concerns a ball delivery group with stationary head, for single or double' pinffield gill boxes for combing and drawing of natural orartificiialtextile fibers, the delivery being designed for one'ba'll and one sliver per head, or two balls and two slivers per head, or one ball and two slivers per head or two balls and four slivers per head. 7

It is known that in gill boxes operating at high speed winding on balls of slivers delivered by the draft rolls is obtained, for manufacturing reasons, by keeping stationary the take-up rolls of the balling head'and by moving the slivers longitudinally by means of ,a'toeandfro motion to obtain the balls. This method .causes the continuous variation of the distance between the draft rolls and the winding ;point of the sliver on the ball, variation that is much greater as the length of the ball increases.

If such a variation of distance is not continuously compensated it causes uncontrolled idrafts on the delivered slivers, which are .harmful'to their evenness.

With the known systems of compensation the slivers are forced, during the run between the draft rolls and the take-up rolls, to follow complicated courses, with sudden inversions of direction that cause the rubbing of slivers. During the inversion of the course the slivers, by bending, cause the swelling of the fibers lying on the internal radius and a draft of the fibers lying externally. In addition to this inconvenience the rubbing of slivers causes an accumulation of static charges on the fibers.

These inconveniences are prevented by the unit according to this invention, which is substantially characterized by the fact that the sliver delivered by the draft rolls is condensed on a loose roll or on a guide and, hence, with a small deviation, it goes directly to the point of tangency of the ball roll with only one rectilinear path, the compensation of the variation of distance between draft rolls and ball roll being obtained automatically in every position and condition by the continuous movement of the deviation roll or guide, perpendicularly to its rotation axis.

The invention will be described with reference to the enclosed sketch and both description and sketch are not restrictive but are merely given as an example.

Fig. 1 is a side elevation of the preferred model of the unit;

Fig, 2 is a front view showing the movement of the sliver and of the false twist trumpet during the winding operation;

Fig. 3 is a plan view of a detail of the construction; and Fig. 4 is a side view, partly in section, of the detail shown in Fig. 3. 1

The above figures show the frame A of the machine. The sliver 1 delivered by draft rolls or sliver supplying means 2 is condensed on a loose roll 3 the arbor 4 of which is supported by an oscillating arm 3' secured by a pivoted joint 4 to the frame A, the axis of the joint being parallel to that of the deviation roll 3.

The sliver, the deviation of which on roll 3 is less Patented Ap 11; 96

thanla right angle, g es directly from the point of tang ncy with roll 3 to'the point of tangency of the driving roll 20,--with only one rectilinear path, through the false twist trumpet -6. The latter is supported by a bracket 7, fixed to a-unit 8 fitted 011.3 cylindrical rod 9 parallel to the rectilinear path of sliver 1. The forward end of the rod 9 is connected to the arm 3 by means of a yoke 10 the arms Of: which are connected to the arbor 4- that rotatably supports the roll 3 on the arm 3'. The base of .the'yoke has an extension 10 which serves as a pivot pin that extends through the eye 9 of the forward end of the rod 9. The extension 10 is so arranged that the pivot axis about which the forward end of the rod 9 pivots is perpendicular to the rod 9 and lies in a-plane perpendicular .to the axis of the ball roll 5.

A ,When'thje .bragket 12 slides on a stationary cylindrical guide 13 which maybe firmly attached to the machine frame, the axis of the trumpet 6 is moved in a plane tangent to ,roll 3 and of the ball roll 5. Because of rod 9 the axis .ofthe trumpet is :always incident to the axis .of pivot10andtherefore by arranging the latter in such a way as to correspond. to the point of tangency of the sliver on roll 5,, the trumpet 6 will always have the same direction as the rectilinear path l'of the sliver, as shown in Fig. 2. Furthermore as the axis of pivot 11 is placed near the bottom end of the trumpet, this end will move along a line parallel to the axis of the ball roll 5.

During the transverse movement of the trumpet along the ball rofll, guide 9 causes the roll 3 to oscillate around pivot 4" so as to keep constant the distance between the rolls and the ball roll. This is so inasmuch as during transverse reciprocation of thetrumpet 6 (Fig. 2), the rod 9 will occupy different angular positions, and also the forward end of the rod 9 will be spaced different distances from the transverse plane within which the axis 11 is reciprocated. This simultaneous reciprocation and varying of the angular position of the rod 9 will bring about pivoting of the forward end of the rod 9 about the extension 10 as well as pivoting of the yoke 10 about the arbor 4 and pivoting of the arm 3 about the joint 4". Consequently, the roll 3 will, during reciprocation of the trumpet 6, swing along the are indicated at X so that the length of the path along which the sliver moves from the supply rolls 2 to the ball roll 5 will be maintained substantially constant at all times. In this way, the tension on the sliver will remain substantially constant.

The lowest position 4' of the roll 3 (Fig. 1) will obviously be attained when the trumpet reaches its limit stop, i.e the inversion of the traverse motion. In this way any variation of tension is prevented and therefore any draft of the sliver during its run from the draft rolls to the ball roll, which would effect its evenness, is avoided.

The rotation of trumpet 6 is obtained by means of a couple of cylindrical gears 14 and 15, the one keyed and the other one co-axial to rod 9. Gear 15 is fixed to a miter gear 16 meshing with another miter gear-17, freely rotatable on pivot 11.

A cylindrical toothed wheel 18 is secured to miter gear 17 to mesh with a rack 19 that is stationary and parallel to the guide 13 and to the axis of ball roll 5.

In this way the alternate motion of the bracket 12 along the pivot 13 causes the rotation of the trumpet 6 around its own axis. The position of the trumpet allows the distribution of the false twist in the whole length of the rectilinear path of sliver 1 between the points of tangency of rolls 3 and 5.

In practice the details of the construction of the unit may vary without deviating from the object of this invention and therefore from the patent.

I claim:

1. In a baller, in combination, elongated balling means adapted to have wound thereon a sliver supplied s'ubstanmovement occupying different positions wherein the paths along which the sliver moves from said delivery point of said supplying means to the point at which it is wound upon said balling means tends to be of difierent lengths; second sliver guide means arranged in the region of said delivery plane between said delivery point of said supplying means and said first guide means for guiding the sliver supplied by said supplying means substantially into said plane, said second guide means being pivotable transversely to said delivery plane about a first pivot axis extending in the direction of said balling means so as to be capable of occupying different positions wherein the sliver moves along different paths forming ditferent angles with said delivery plane; and connecting means interconnecting said first and second guide means for pivoting the latter transversely to said delivery plane in such a manner that during reciprocating movement of said first guide means, said second guide means moves throughout such positions as to guide the sliver along difierent paths forming such angles" with said delivery plane that the length of the sliver path is maintained substantially constant at all times, said connecting means including an elongated connecting member connected at one end thereof to said first guide means for reciprocating movement therewith and for pivotal movement about 2,979,276 y g e a second pivot axis normal to said delivery plane, said connecting member being connected at its opposite end to said second guide means for pivotal movement relative thereto about a third pivot axis also normal to said delivery plane and for reciprocating movement relative to said second guide means in a direction coextensive with said third pivot axis, whereby said second guide means will, during reciprocating movement of said first guide means, pivot about said third axis, thereby moving transversely to said delivery plane and guiding the sliver alongdiiferent paths forming dilferent angles therewith.

2. The combination defined in claim 1 wherein said first guide means includes a tubular member having an axis lying-substantially within said delivery plane and extending substantially parallel to said connecting memher, said tubular member being pivotable with said connectingvmember about said second axis during reciprocating movement of said first guide means so that said tubular member occupies dilferent angular positions relative to said balling means. 3. The combination defined in claim 2, and additional means for rotating said tubular member about its axis during reciprocating movement of said first guide means.

References Cited in the file of this patent UNITED STATES PATENTS 190,811 Bevelander May 15, 1877 736,472 Anderson Aug. 18, 1903 1,797,393 Abbott Mar. 24, 1931 2,674,013 Place Apr. 6, 1954 FOREIGN PATENTS 529 Great Britain Feb. 26, 1867 of 1867 122,870 Germany Aug. 10, 1901 901,884 Germany Jan. 18, 1954

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