US3343754A - Apparatus for producing an upper winding for ring spinning and twisting machines - Google Patents

Description

Sept. 26, 1967 K, KLElN ET AL 3,343,754

APPARATUS FOR PRODUCING AN UPPER WINDING FOR RING SPINNING AND TWISTING MACHINES Filed Sept. 25, 1964 4 Sheets-Sheet 1 Fig. 3

In venlors Sept. 26, 1967 KLE|N ET AL APPARATUS FOR PRODUCING AN UPPER WINDING FOR RING SPINNING AND TWISTING MACHINES 4 Sheets-Sheet 2 Filed Sept. 25, 1964 I Jn veniars Konrad Klcm Jun HL/n 1 H Sept. 26, 1967 KLEIN ETAL 3,343,754

' APPARATUS FOR PRODUCING AN'UPPER wINI ING FOR RING SPINNING AND TWISTING MACHINES Filed Sept. 25, 1964 4 Sheets-Sheet 5 Fig. 6

Jnvenfors KOhruc A70." fil g HJl r Sept. 26, 1967 K. KLE|N ET AL 3,343,754

APPARATUS FOR PRODUCING AN UPPER WINDING FOR RING SPINNING AND TWISTING MACHINES Filed Sept. 25, 1964 4 Sheets-Sheet 4 Fig. 8

J0 venfars Kan my, a! 4 (e11, file/ n:

United States Patent 9 Claims. (of 242-261 The present invention relates to ring spinning and twisting machines and, more specifically, concerns an automatically operable apparatus by means of which in connection with ring spinning and twisting, a reserve winding, a so-called upper winding, is imparted upon the tip of a cop.

Devices for producing upper windings are known by means of which, following the build-up of a cop, the ring rails are lifted by manual or foot operation into a position in which the upper windings are to be produced and in which the ring rails are held until the corresponding thread length has been wound upon the cop.

According to a heretofore known automatic upper winding arrangement, an auxiliary motor is employed which, for purposes of applying the upper winding, shortens the pulling member on which the ring rails are suspended to such an extent that the ring rails can be lifted into the upper winding position. During the time which is necessary for applying the upper winding, the auxiliary motor is at a standstill and thus holds the ring rails in the upper winding position whereupon the auxiliary motor lowers the ring rails to their lower winding position by reversing its direction of rotation. As long as the auxiliary motor takes over the actuation of the ring rails, the cam which, during the build-up of the cop con trols the movement of the ring rail-the so-called heart eccentric-has to be held in its ineffective position. Such an arrangement in addition to requiring an auxiliary motor also requires an expensive transmission equipped with clutch means.

In order to produce a less expensive and complicated arrangement for the purpose involved, a device has been suggested according to which, the tiltable arm which is oscillated by the cam for moving the ring rails and to which the pulling members actuating the ring rails are linked is actuated by a hydraulically, pneumatically or electromagnetically movable pull or pressure rod and is moved thereby beyond its normal tilting range to such an extent that the ring rails are lifted into the upper winding position. In view of the necessary high power requirement, the employed working element has to be designed rather strong. Consequently, a pneumatic or hydraulic working element becomes unduly expensive, whereas an electromagnetic working element will not assure a quiet uniformly fast lifting movement of the ring rails into their upper winding position.

According to a further heretofore known upper winding apparatus, it has been suggesetd, for purposes of lifting the ring rails into their upper winding position to move a pressure member into the tilting range of the tilting arm in such a way that the pulling member which is designed in the form of a chain and is moved along a tilting arm will at the outermost abutment of the tilting arm as it is brought about by the cam disc for the buildup of the cop shortened by the corresponding amount. By means of an arresting device, the tilting arm is held in this position until the corresponding thread length is applied as upper winding. An arrangement of this type in addition to requiring two working elements for actuating the pressure member and the arresting means, also makes necessary quite a number of intermediate elements which require precise adjustment and careful servicing.

It is, therefore, an object of the present invention to provide an arrangement for use in connection with ring spinning and twisting machines for applying an upper winding, which will over-come the above mentioned drawbacks.

It is another object of this invention to provide an arrangement for applying upper windings to build-up cops in ring spinning and twisting machines which will be simple in construction, reliable and highly effective,

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawings, in which:

FIG. 1 diagrammatically shows an end view of an arrangement according to the present invention for use in connection with a ring spinning machine.

FIG. 2 diagrammatically illustrates a side view of FIG. 1.

FIG. 3 illustrates the location of the upper winding on the cop.

FIG. 4 illustrates on a larger scale than FIGS. 1 and 2 a section through the upper winding apparatus which is shown in the lower portion of FIGS. 1 and 2.

FIG. 5 is a view of FIG. 4 an seen in the direction of the arrow A of FIG. 4.

FIG. 6 represents a section through a modified upper winding applying apparatus according to the invention.

FIG. 7 is a view of FIG. 6 as seen in the direction of the arrow B of FIG. 6.

FIGS. 8 and 9 respectively illustrate two control circuits for controlling the upper and lower winding operations.

The present invention is characterized primarily in that in addition to the cam which controls the building up of the thread layers (heart or layer eccentric) there is provided an additional cam which by means of its largest radius lifts the ring rails beyond the stroke range of the heart eccentric into the upper winding position. This additional cam is rotatably mounted on the continuously rotating shaft of the heart eccentric and after completion of the build-up of the cop is adapted by means of a clutch to be connected to said shaft. Advantageously, this clutch is designed as an electromagnetic clutch. The smallest non-effective radius of the cam disc for the upper winding is shorter than the smallest radius of the heart eccentric.

According to an advantageous embodiment of the invention, the cam disc for the upper winding extends over a peripheral portion of the so-called heart eccentric.

The cam disc for the upper winding device may according to a further development of the invention, following the engagement of the clutch first in view of its rotation act as cam disc and lift the ring rails into their upper winding position, whereupon the supporting roller of the tilting arm engages a ratchet, notch or the like on the cam disc, whereupon the clutch is disengaged and the cam disc acts as a stationary supporting member and holds the tilting arm in a position corresponding to the upper winding position.

In order to be able to adjust the thread length of the upper winding, the upper winding operation is, in conformity With the present invention, finished by the adjustable start of the lower winding operation which is initiated by an adjustable length or timer mechanism or by an adjustable cam on a continuously rotating part of the spinning or twisting machine.

Referring now to the drawing in detail and FIGS. 1 to 5 thereof in particular, it will be noted that the wall 1 of the end support of the ring or twisting machine a (FIG. 4) has mounted thereon a bearing: bushing 2 in which a shaft 3 is journalled. Shaft 3 is driven in a standard manner by the transmission of the machine through the intervention of a pair of bevel gears 4, 5. Shaft 3 has a collar 6 to which a cam disc 7 is connected which is adapted through the intervention of a roller 8 to actu- 'ate a tilting arm 9 (see also FIG. The tilting arm 9 carries a sprocket 10- over which a chain 11 passes from an indexing or control mechanism 12 over a guiding pulley 13 to a sprocket 14. Mounted on the same shaft 15 to which sprocket 14 is keyed, there are also keyed sprockets 16 and 17 over which pass additional chains 18; chains 18 extend via deviating pulleys 1? to the lower ends of lifting bars 21 on which the ring rails 22 rest. Due to the weight of the ring rails 22, roller or pulley 8 on arm 9 always engages cam disc 7. The circumferential shape of the cam disc 7 is so selected that when shaft 3 rotates, the ring rails will be raised and lowered in the desired manner. By means of the indexing or control mechanism 12, chain 11 will in a likewise well-known manner be shortened so that the ring rails gradually displace their stroke upwardly and thus build up the cop. Control mechanism 12 contains a reversible motor 51 which will draw chain 11 into the mechanism to shorten the chain or feed the chain out of the mechanism to lengthen the chain.

Fixedly connected to shaft 3 is one-half 23 of a clutch 23, 24 which is advantageously designed as an electromagnetic clutch. The other half 24 of said clutch is connected to a second cam disc 25 which likewise acts upon roller 8 mounted on tiltable arm 9.

According to the embodiment of FIG. 4, a normally open clutch 23, 24 is arranged between the two cam discs 7 and 25 which act upon the relatively wide roller 8. Clutch part 23 is keyed to shaft 3 while clutch part 24 is fixed to disc 25.

An advantageous embodiment of the invention is also obtained when clutch 23, 24, as illustrated in FIG. 6, is arranged outside the two earn discs 7 and 25. In this instance, the second cam disc 25 may extend over a peripheral portion of the first mentioned cam disc 7. All parts of the arrangement of FIG. 6 which correspond to those of the arrangement of FIGS. 1 to 5 have been designated with the same reference numerals as the latter.

The effective circumferential portion of the second cam disc 25 has a radius which exceeds the largest radius of the first mentioned cam disc 7. This difference in the lengths of the radii, in consideration of the lever length effective during the stroke transmission corresponds to the distance 25 which is intended between the upper winding 27 to be applied and the upper edge of the cop windin 28. The radius of the non-effective portion of the second cam disc 25 is shorter than the smallest radius of the first cam disc 7 so that the tilting range of the tilting arm 9 will not be limited during its actuation by the first cam disc 7. The second cam disc 25 has a rising flank 29 which is located between the radial and tangential direction.

In order to be able to hold the second cam disc 25 in its rest position out of the tilting range of roller 8, the arrangement according to the embodiment of FIG. 4 has a counterweight 30 mounted on cam disc 25. This counterweight lifts the effective range of the cam disc 25 out of the tilting range of roller 8. According to the embodiment of FIG. 7, this is effected by a spring 31. According to FIG. 7, the second cam disc 25 has a ratchet or notch 32 which is engaged by roller 8 and by means of which cam disc 25 is held in its position.

In operation, cam disc 25 is normally in its inedective position (full line position in FIG. 5; dotted line position in FIG. 7), and is only moved into effective position where it engages roller 8 when clutch 23, 24 is energized. The clutch is normally deenergized and disc 25 is in ineffective position. Energization of the clutch will connect disc 25 to shaft 3 and the disc will move to effective position in engagement with roller 8. The disc 25 remains in effective position until a motor in mechanism 12 operates to lengthen chain 11 and drop arm 9 away from disc 25.

The electric circuit of FIG. 8 for controlling the above described arrangement according to the invention comprises a relay 33 which, through its blade 34, is adapted to make clutch 23, 24 effective and ineffective. Arranged in series with relay 33 is a blade 36 adapted to be closed by the length measuring mechanism 35 of the spinning or twisting machine, and also a switch 38 adapted to be closed by a cam 37 on cam disc 7. Arranged parallel to said switches 36 and 38 is a holding blade 39 of relay 33. In series with relay 33 is furthermore a blade 40 which is adapted to be opened by energization of its relay 41. In series with this relay 41, according to FIG. 8, is a blade 42 adapted to be closed by relay 33, a switch 44 adapted to be closed by a cam 43 on cam disc 7, and a switch 46 adapted to be opened by an abutment 45 on ring rails 22. Parallel to switches 42 and 44 is a self-holding blade 47 of relay 41. Relay 41 also controls blade 52 in series with motor 51.

According to the embodiment of FIG. 9, a switch 48 with serially arranged relay 41 is arranged parallel to the self-holding switch 47. Switch 48 is adapted to be closed by a time measuring or length measuring mechanism 49. In series with said measuring mechanism 49 is a blade 50 which is adapted to be closed by relay 33. Relay 41 is adapted to close a blade 52 which is serially arranged with the lower winding motor 51 in the indexing mechanism 12.

The operation with the modification of FIG. 8 is as follows:

When the cop has been built up, and it is intended to apply the upper winding, clutch 23, 24 is engaged. Advantageously, this is efiected when the length measuring mechanism 35 arranged on the ring spinning or twisting machine, closes switch 36 located in the circuit for the relay 33, and a second switch 38 arranged in series with switch 36 is closed by a cam 37 on the first cam disc 7.

When both switches 36 and 38 close, relay 33 is energized and remains energized through its holding blade 39 and energizes clutch 23, 24 through blade 34. As a result thereof, clutch 23, 24 will connect the second cam disc 25 in a precisely determinable angular position with regard to cam 7 with shaft 3 and, more specifically, so that the lifting or raising of the spindle rails by the first cam disc 7, will be steadily continued by [flank 29 of the second cam disc 25.

Thus, the second cam disc 25 raises ring rails 22 into their upper winding position and retains the same in said position due to the fact that its radius remains the same in this sector until the required thread length has been applied. According to the embodiment of FIG. 7, the clutch may, after roller 8 engages notch 37, be disengaged inasmuch as roller 8 will hold cam disc 25 in said position. Such disengagement may be caused by a normally closed switch in series with blade 34 which is opened when roller 8 drops into notch 32. The switch could be mounted on disc 25 (FIGS. 6, '7) and be actuated by arm 9 or roller 8. FIG. 7 shows such a switch at 60 and the switch is also shown in FIGS. 8 and 9.

The end of the upper winding applying operation is de- H termined by a further switch 44 adapted to be actuated by an adjustble cam 43 on cam disc 7 a predetermined time after the actuation of switch 36 and before the high part of disc 25 of FIG. 5 runs off roller 8. Blade 42 which is already closed by relay 33 serves for permitting relay 41 to be energized upon closing of switch 44 only when an upper winding operation brought about by energization of relay 33 is effective. When switch 44 is closed by cam 43, and relay 41 becomes energized, blade 42 of relay 41 brings about energization of lower winding motor 51 and lengthening chain 11,- causes a lowering of the ring rails 22 into the lower winding position. At the same time opening of switch 40 by energization of relay 41, causes relay 33 to be switched off and thus brings about a disengagement of the upper winding clutch 23, 24. As a result thereof, cam disc 25 of the embodiment of FIG. 5 will, under the influence of counterweight 30, return to its rest position. In the FIG. 7 modification, the clutch is already deenergized and disc 25 is pulled back to its rest position by spring 31 when the lengthening of chain 11 drops arm 9 and roller 8 away from the disc.

The thread length of the upper winding 27 is determined by the angular distance between cam 37 and cam 43 on cam disc 7 in conformity with the circumferential speed thereof.

When the lower winding position has been reached, the ring rails 22 by means of abutment 45 open switch 46 so that relay 41 is de-energized and through switch 52 turns off the lower winding motor 51.

In FIG. 9, substantially the same cycle of operations is had as described in connection with FIG. 8 except that, instead of controlling the return of disc 25 by a cam on disc 7, it is effected by a timer mechanism 49.

Energization of relay 33 in FIG. 9 closes its blade 50 and sets timer 49 into operation. When timer 49 times out, its blade 48 closes and relay 41 is energized. Thereafter, the system operates exactly as described in connection with the FIG. 8 circuit.

It will be appreciated that either circuit can be used with either of the FIGS. 4 and 5 or the FIGS. 6 and 7 modifications. With the FIGS. 4 and 5 modification, the disc 25 has a long raised part and turns throughout the top winding operation and is released when relay 33 is deenergized whereas with the FIGS. 6 and 7 modification, the high part of disc 25 can be shorter, the clutch 23, 24 is released when roller 8 drops into notch 32, and the disc is released when arm 9 and roller 8 drop due to lengthening of chain 11 as brought about by energization of motor 51.

Operation of motor 51 to shorten chain 11 is not shown but is conventional. A control device embodying such a motor is shown in British Patent 872,673.

It is, of course, to be understood that the present invention is, by no means, limited to the particular arrangements shown in the drawings but also comprises any modifications within the scope of the appended claims.

What we claim is:

1. In combination with a textile machine, especially a ring spinning and twisting machine, which includes ring rail means, a tiltable lever operatively connected to said ring rail means for bringing about a lifting and lowering of said ring rail means to build up a cop, a first cam operable to actuate said lever, and a rotatable shaft connected to said first cam, an arrangement for applying a reserve winding onto the top portion of a built-up cop, which includes: an additional cam adjacent said first cam and normally freely rotatable on said shaft, and clutch means having one element connected to said shaft and having another element connected to said additional cam, said clutch means being operable to be engaged and disengaged for respectively establishing and interrupting driving connection between said shaft and said additional cam, said additional cam being operable in cooperation with said lever to raise said ring rail means beyond the lifting range of said first cam to a position for applying said reserve winding, both of said cams acting on one and the same said lever.

2. An arrangement according to claim 1, in which the largest radius of said additional cam is greater than the largest radius of said first cam.

3. An arrangement according to claim 1, in which said clutch means is an electromagnetic clutch.

4. An arrangement according to claim 1, in which the radius of both cams varies in different angular regions thereof and in which that shortest radius of said additional cam which pertains to a peripheral surface thereof that is non-effective for applying the reserve winding is shorted than that shortest radius of said first cam which is effective for building up the cop.

S. In combination with a textile machine, especially a ring spinning and twisting machine, which includes ring rail means, a tiltable lever operatively connected to said ring rail means for bringing about a lifting and lowering of said ring rail means to build up a cop, a first cam operable to actuate said lever, and a rotatable shaft connected to said first cam, an arrangement for applying a reserve winding onto the top portion of a built-up cop, which includes: an additional cam adjacent said first cam and normally freely rotatable on said shaft and having a peripheral section of a larger radius than the largest radius of said first cam, said section of said additional cam extending axially at least partially over a peripheral portion of said first cam, and clutch means having one element connected to said shaft and having another element connected to said additional cam, said clutch means being operable to be engaged and disengaged for respectively establishing and interrupting driving connection between said shaft and said additional cam, said additional cam being operable in cooperation with said lever to raise said ring rail means beyond the lifting range of said first cam to a position for applying said reserve winding, both of said cams acting on one and the same lever.

6. In combination With a textile machine, especially a ring spinning and twisting machine, which includes ring rail means, a tiltable lever operatively connected to said ring rail means for bringing about a lifting and lowering of said ring rail means to build up a cop, a first cam operable to actuate said lever, and a rotatable shaft connected to said first cam, an arrangement for applying a reserve winding onto the top portion of a built-up cop, which includes: an additional cam adjacent said first cam and normally freely rotatable on said shaft, clutch means having one element connected to said shaft and having another element connected to said additional cam and being operable to be engaged and disengaged for respectively establishing and interrupting driving engagement between said shaft and said additional cam, said additional cam being operable in response to the engagement of said clutch means and in cooperation with said lever to raise said ring rail means beyond the lifting range of said first cam into a position for applying said reserve winding, both of said cams acting on one and the same lever, arresting means operable in response to said additional cam reaching a position corresponding to the position of said ring rail means for applying said reserve winding to arrest said additional cam, and means operable in response to said additional cam reaching its position in which said arresting means become effective to bring about disengagement of said clutch means.

7. An arrangement according to claim 1, which includes means operatively connected with said c-lutch means and operable in response to a predetermined angular movement of said cams following engagement of said clutch means to bring about disengagement of said clutch means to thereby terminate the application of the reserve Winding on the top portion of the cop and to terminate the length of said reserve winding.

8. An arrangement according to claim 1, which includes control means operatively connected to said cl-utch means for effecting engagement and disengagement of said clutch means and also including timer means energized simultaneously with engagement of said clutch means and operable after a predetermined time period following the engagement of said clutch means to bring about disengagement of said clutch.

9. An arrangement according to claim 3, in which said References Cited textile machine includes first and second cam elements UNITED STATES PATENTS movable in unison with said first cam, first and second switches operated by said cam elements in first and sec- 965,305 7/ 1910 Koech'hll -1 0nd rotated position of said first cam, means responsive 5 v to operation of said first switch by said first cam element FOREIGN PATENTS for causing engagement of said clutch, and means re- 872,673 7/1961 Great Britain.

sponsive to operation of said second switch by said second cam element for causing disengagement of said clutch. STANLEY N. GILREATH, Primary Examiner.

Claims (1)

1. IN COMBINATION WITH A TEXTILE MACHINE, ESPECIALLY A RING SPINNING AND TWISTING MACHINE, WHICH INCLUDES RING RAIL MEANS, A TILTABLE LEVER OPERATIVELY CONNECTED TO SAID RING RAIL MEANS FOR BRINGING ABOUT A LIFTING AND LOWERING OF SAID RING RAIL MEANS TO BUILD UP A COP, A FIRST CAM OPERABLE TO ACTUATE SAID LEVER, AND A ROTATABLE SHAFT CONNECTED TO SAID FIRST CAM, AN ARRANGEMENT FOR APPLYING A RESERVE WINDING ONTO THE TOP PORTION OF A BUILT-UP COP, WHICH INCLUDES: AN ADDITIONAL CAM ADJACENT SAID FIRST CAM AND NORMALLY FREELY ROTATABLE ON SAID SHAFT, AND CLUTCH MEANS HAVING ONE ELEMENT CONNECTED TO SAID SHAFT AND HAVING ANOTHER ELEMENT CONNECTED TO SAID ADDITIONAL CAM, SAID CLUTCH MEANS BEING OPERABLE TO BE ENGAGED AND DISENGAGED FOR RESPECTIVELY ESTABLISHING AND INTERRUPTING DRIVING CONNECTION BETWEEN SAID SHAFT AND SAID ADDITIONAL CAM, SAID ADDITIONAL CAM BEING OPERABLE IN COOPERATION WITH SAID LEVER TO RAISE SAID RING RAIL MEANS BEYOND THE LIFTING RANGE OF SAID FIRST CAM TO A POSITION FOR APPLYING SAID RESERVE WINDING, BOTH OF SAID CAMS ACTING ON ONE AND THE SAME SAID LEVER.

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