US3067566A - Collective ring depressor - Google Patents

Collective ring depressor Download PDF

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Publication number
US3067566A
US3067566A US20867A US2086760A US3067566A US 3067566 A US3067566 A US 3067566A US 20867 A US20867 A US 20867A US 2086760 A US2086760 A US 2086760A US 3067566 A US3067566 A US 3067566A
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United States
Prior art keywords
twisting
ring
machine
yarn
ring beam
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Expired - Lifetime
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US20867A
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English (en)
Inventor
Hermanns Van Dreven
Boer Albert De
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Akzona Inc
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American Enka Corp
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/36—Package-shaping arrangements, e.g. building motions, e.g. control for the traversing stroke of ring rails; Stopping ring rails in a predetermined position

Definitions

  • This invention relates to a ring twisting machine in which the aligned traveller rings are coupled to a common ring beam or ring rail which in turn is coupled in operative relationship to a traversing mechanism wherein an auxiliary winding surface is provided between the drive and the tube holder of each twisting spindle.
  • Ring twisting machines of this type are well known and are usually used in combination with yarn drawing apparatus for the stretching and twisting of threads formed from linear polycondensation products, such as polyamides and polyesters.
  • the starting of the drawing or stretching process, or the replacing of full tubes by empty ones, is done in such apparatus pointwise per twisting spindle.
  • the holder of the traveller ring is connected to a tube system which encloses and slidably engages two rods extending parallel to the twisting spindle in a downward direction as viewed from the ring beam, and in which the tube system may be fixed by means of a locking mechanism on the rod system in a position of the traverse path where the traveller ring faces a tube arranged on the spindle, Whereas in the decoupled position the traveller ring remains facing the auxiliary surface.
  • the tube system in the prior ring twisting machine is pointwise decoupled from the ring beam; consequently, the traveller ring remains facing the auxiliary surface notwithstanding the fact that the traversing beam continues to move up and down. Accordingly, undrawn thread or yarn supplied to the twisting machine at this stage of the process is wound on the auxiliary surface. This is continued until the thread at a following stage is wrapped around a drawing roller and the drawing process begins. Thereupon the traveller ring and tube system are raised and coupled to the ring beam so that yarn subsequently drawn will be collected on the twisting tube.
  • the quantity of waste yarn on the auxiliary winding surface depends on the time required by the operating personnel for threading-in the yarn on the machine. In general this means the loss of rather considerable amounts of yarn which, moreover, means that the auxiliary winding surface must be cleaned fairly regularly.
  • the known method of operation described above may offer advantages if the yarn supply packages from which the undrawn yarn is fed to the draw twisting machine contain yarn quantities of unequal length. In order to be able to have these packages empty themselves completely the running times of the various twisting spindles on the machine necessarily should be different. On the other hand, this presents a serious drawback because the collecting tubes will also contain unequal quantities of yarn. This latter inherent result is most undesirable if wraps are formed from these twisting tubes. With modern winding machines, however, it has been found possible to wind packages of undrawn yarn in substantially equal lengths. Consequently, pointwise threading-in of the machine no longer presents a real advantage.
  • Another object of this invention is to provide in a ring twisting machine improved means for selectively operating the traversing mechanism of the ring beam without modifying the path of the yarn.
  • Still another object of this invention is the provision of means for interrupting the traverse pattern between the ring beam and the traversing mechanism of a ring twisting machine to place the traveller rings in predetermined position relative to the twisting tubes.
  • a further object of this invention is the provision of improved means in a ring twisting machine for providing a transfer tail on a twisting tube.
  • a system in which driving relationship in the coupling between the ring beam and the traversing mechanism may be interrupted, and the ring beam may be moved into a position where the traveller rings face the auxiliary winding surfaces.
  • FIGURE 1 is a diagrammatic view of a ring twisting machine according to this invention showing an interrupting system which is manually operated,
  • FIGURE 2 is a view taken along line 2--2 in FIGURE 1 in the direction of the arrows, but with motor-driven means for operating the interrupting system, and
  • FIGURE 3 is a side elevational view taken along line 33 in FIGURE 2.
  • FIG. URE 1 there are shown diagrammatically only such elements of a draw or stretch-twisting machine which are necessary to describe the instant invention. Thus, only the winding portion of the stretch-twisting machine is illustrated and the stretch portion is omitted.
  • the ring beam 1 of the ring twisting machine has coupled thereto along the entire length thereof a series of traveller rings. These couplings are of a known type of detachable locking and guiding systems, the lock of which is designated by reference numeral 3 and the guiding system by reference numeral 4.
  • the traveller rings 2 are shown in locked position in which position they can follow the traversing movement of the ring beam 1. Twisting spindles and twisting tubes mounted thereon project through the rings 2.
  • the twisting tubes have a primary yarn receiving surface over the major portion thereof and an auxiliary surface outside the primary surface on the lower end thereof.
  • the spindle drive means is well known and has been omitted for purposes of clarity.
  • the traveller rings 2 may by means of the locks 3 be uncoupled from the ring beamv 1 and thereafter pushed downwardly along the guiding system 4 into a position facing the auxiliary winding surfaces located below the twisting tubes on the twisting spindles.
  • the ring beam 1 is connected by means of nuts 6 to the push rods of which only two are shown although several are provided. These push rods 5 are mounted on rollers 7 supported in blocks 3.
  • the blocks-8 constitute part of the bellcrank levers which are pivoted on pivot shafts 10, said levers having arms 9 and 11.
  • Arms 11 are coupled together by connecting rods 12 and are biased towards the right by springs 13. Under the influence of springs 13 the ring beam 1 and the rings 2 will always be drawn to their uppermost position.
  • the traversing of the rings 2 along the twisting spindles is effected by the use of head 14, shaped like a circular rack segment and integral with arm 11 of the leftmost bellcrank lever.
  • a chain 15 is fixed to and trained over the head 14!- and is periodically drawn towards the left thereby operating the traversing mechanism.
  • the chain 15 is led around a guiding sprocket 16 and 'is fixed at its free end to a second rack segment which forms part of a pivot arm 17 pivotally supported on a pivot 18.
  • the pivot arm 17 is adapted to be rocked about pivot 18 by suitable means such as a rotatable cam disc.
  • an abutment 19 is fixed to the arm 11 of the rightmost bellcrank lever. Facing the end of the abutment 19 there is provided a buffer plate 20 at the end of a screw jack 21 which is carried in the rear front plate 22 of the machine.
  • the screw jack 21 is provided at its inner end with a square head 23 on which an operating key may be fitted.
  • FIGURES 2 and 3 show details of another embodiment of the machine of this invention with which it is possible to perform the above-described operations automatically for the greater part. With the exception of parts 19, 20, 21 and 23, those previously-mentioned and described are also provided in this embodiment.
  • the pivot arm 17, which is shown viewedfrom the left hand side, carries rollers 24- and 25 mounted in bearings. During normal operation the pattern disc 26, fixed to shaft 27 and rotated by the main drive of the machine, co-operates with the roller 25.
  • the pattern disc 26 forms part of the entire traversing mechanism which is capable of performing the desired traversing program during the normal operation of the machine.
  • An auxiliary pattern disc 28 is adapted to co-operate with the roller 24.
  • This auxiliary pattern disc is mounted on a shaft 29, which shaft is rotated through worm gearing (not shown) in casing 30, intermediate shaft 31 and the coupling32, by a motor 33.
  • auxiliary pattern disc 28 is such that during normal operation this disc when pointing with its smallest radius towards the roller 24 does not touch the roller but it takes the pivot arm 17 entirely out of reach of the normal traversing when pointing with its largest radius to the roller 24.
  • auxiliary pattern disc 28 there are fixed two cams or lugs 34, only one of which is shown inFlGURE 3. These cams 34 are adapted to come into contact with a disconnecting or limit switch (not shown) when the pattern disc assumes one of the two extreme positions. This limit switch interrupts the supply of current to the motor 33 so that the latter is stopped.
  • the shape of theauxiliary pattern disc 28 is such that it enables move-- ment of the pivot arm from its highest position quickly downwardly and slowly upwardly. As a result thereof the downward movement of the pivot arm- 17 is 1.75 times as fast as that of the upward movement.
  • the section of the auxiliary pattern disc 28 which gives the pivot arm 17 its upward movement comprises a portion which is.
  • auxiliary pattern disc 28 concentric with the shaft 29 and extends over 18 of the circumference of the said auxiliary pattern disc, starting from 12 after passing the lowest point.
  • the lowest point of the pivot arm 17 is maintained for a certain period of time by a portion of the auxiliary pattern disc 28 which is likewise concentric with the shaft 29'. This concentric portion of the pattern disc extends over 18.
  • the motor .33 which rotates the auxiliary pattern disc 28 is started by a hand-operated switch (not shown). This disc begins rotation from a position with its smallest radius pointing to the pivot arm 17 and rotates over about one third of a revolution, the pivot arm 17 being pushed into its lowest position. In this position of the auxiliary pattern disc 28 one of the cams 34 abuts against the limit switch so that the motor 33 and the disc 28 are stopped. In this position of the pivot arm 17 the yarn is led from tubes below the traversing paths. The ring beam 1 remains in'this position for a started operated switch so that the ommences to rotate again. 0 a slight rising of the ring few moments until a sutficient transfer tail is laid and thereafter rises again gradually.
  • the interrupting system is activated and such activation causes the ring beam, together with the traveller rings, to move downwardly into a position facing the auxiliary winding surfaces, whereupon the entire machine is stopped. Since the yarn at each twisting point is now threaded from the traveller to the auxiliary winding surface, the fully wound twisting tubes may be removed from the spindles and replaced by empty tubes without modifying the path of yarn.
  • the entire machine remains threaded-in and the yarn maintains its position in all points of the stretching path. If the machine is thereafter put into operation and interruption of the normal ring beam traversing movement is subsequently terminated, the drawing operation and the winding operation are again carriedout at all points of the machine without change.
  • the aforementioned manipulations may be performed very quickly by unskilled personnel, since it is not necessary to rethread the machine with yarn, and the said manipulations may be carried out when the machine is nonoperative, which results in a quieter operation as well as reduced risk to operating personnel. Furthermore, since the situation at each twisting point is absolutely analogous, differences in length and location of the transfer tail on the twisting tube cannot occur.
  • the ring beam moves past the point where the transfer tail must be laid.
  • the location and the length of the transfer tail may be determined in the same manner for all twisting points. Assuming that this requires a certain skill, the same clearly is not any greater than that which is necessary for pointwise provision of a transfer tail. Moreover, this skill is only required for one person, since a single operator may arrange the transfer tails on all twisting tubes.
  • this quantity of waste yarn amounts to only a few meters per twisting point. This not only means a saving of waste yarn in the machine of this invention but, moreover, the auxiliary winding surfaces are filled less rapidly than in the case of prior machines. This also means a saving as regards the activities of the operating personnel for fewer cleanings of the auxiliary winding surfaces are required.
  • the interrupting system may be constructed for hand operation and in its simplest form it is such that the lowest position of the ring beam and the position in which the transfer tails are arranged are adjusted visually. Moreover, the residence time during which the ring beam is left in the position in which the transfer tails are arranged is determined by the operator each time that the interrupting system is operated.
  • this embodiment may lead to good results if the person operating the interrupting system is highly skilled in this respect, there are nevertheless objections to this embodiment. It has been found that operation by hand of the interrupting system is burdensome and the high degree of accuracy with which this operation has to be effected makes great demands upon the personnel. Accordingly, it is desirable to provide automatic means for working the interrupting system.
  • automation may be realized in a fairly simple way by constructing the ring twisting machine so that the interrupting system comprises a driving mechanism including a motor, said driving mechanism effecting the interruption of the normal ring beam movement according to a predetermined pattern.
  • This pattern may be introduced in several ways into the ring beam movement, for example, electrically or by means of rod systems.
  • the construction of the interrupting system may vary and also the method of cooperation of this system with the ring beam.
  • a preferred embodiment according to this invention is the use of an interrupting system wherein during the interrupting movement the draw chain is permitted to slacken.
  • a very simple and efficient interrupting system is preferably used.
  • an interrupting system employing an auxiliary pattern disc is adapted to cooperate with the same pivot arm, the largest and smallest deflections which the pivot arm may derive from the auxiliary pattern disc of the interrupting system being larger or smaller, respectively, than those which may be derived from the traversing mechanism.
  • the latter type of ring twisting machine also employs a draw chain as driving connecting element, the latter construction is to be preferred.
  • An additional advantage of the preferred embodiment of this invention is that it is of more compact design. This results from the fact that the entire mechanism of the interrupting system may be arranged near the driving and traversing mechanisms of the machine.
  • This invention may be employed in a ring twisting machine wherein the coupling of each traveller ring at the ring beam comprises a detachable locking and guiding systemin which.
  • the lock when closed fixedly couples the traveller ring to the ring beam and when opened renders the traveller ring displaceable in a vertical direction relative to the ring beam in such a manner that the traveller ring may be brought independently of the traversing movement of the ringbeam into a position facing the auxiliary winding surfaces.
  • the traveller ring is moved into the position facing the auxiliary winding surface. Thereafter the yarn is threaded-in with the traveller ring in this position, after which the traveller ring is locked to the ringbeam. While it is true that detachable locking and guiding system for the pointwise locking and guiding of traveller rings to or relative to the ring beam are known, it is emphasized, however, that in combination with the system for interrupting the ring beam traversing these systems are novel and serve another purpose in this connection, all' as explained hereinabove.
  • a ring twisting machine having a plurality of twisting spindles and'tube holders carried thereby, a traversing ring beam mounted on saidmachine for reciprocation relative thereto and for supporting a plurality of travellerrings, there being. one traveller ring; for each twistingv spindle, each of said tube holders having an auxiliary winding surface thereon, a traversing mechanism connected to said ring beam for.
  • a motor reciprocating the same, in a normal traversing path a motor, a pattern disc driven by said motor for connecting the same to said traversing mechanism and for interrupting the reciprocating move ment thereof in accordance with a predetermined sched ule, said pattern disc having a contour such that the ring beamv may be moved quickly to a position Where the traveller rings face the auxiliary winding surface on corresponding tube holders andheld. there for a predetermined lengthof time, after which the ring beam may be raised more, slowly into the normal traversing path.
  • a ring twisting machine according to claim 1. wherein, means are provided for automatically stopping the pattern disc in the extreme positions of said pattern disc.
  • a ring twisting machine accordingto claim 1 wherein means are provided on said pattern disc for automaticallystopping the. motor and thereby the pattern disc. in the extreme positions of said pattern disc.
  • A- ring twisting machine according to claim 1 wherein. theztraversingmechanism includes a pivoted leverand a chain connecting said lever to said ring beam, and the pattern disc cooperates with said lever to interrupt the reciprocating movement of said ring beam.
  • a ring twisting machine according to claim l wherein. the traversing mechanism includes a positively moved pivoted lever and a chain connecting said lever to said ring beam, and the pattern disc cooperates with said lever tointerrupt the reciprocating movement of said ring beam.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Sheet Holders (AREA)
US20867A 1959-04-17 1960-04-08 Collective ring depressor Expired - Lifetime US3067566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL238259 1959-04-17

Publications (1)

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US3067566A true US3067566A (en) 1962-12-11

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ID=19751674

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US20867A Expired - Lifetime US3067566A (en) 1959-04-17 1960-04-08 Collective ring depressor

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US (1) US3067566A (de)
BE (1) BE589452A (de)
CH (1) CH381580A (de)
ES (1) ES257372A1 (de)
GB (1) GB930824A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986326A (en) * 1974-03-29 1976-10-19 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Method and apparatus for preventing yarn breakage in ring spinning machines
US4002014A (en) * 1974-12-23 1977-01-11 Grant's Textiles, Incorporated Bear down system for yarn handling machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107723859B (zh) * 2017-11-01 2023-06-30 经纬智能纺织机械有限公司 细纱机精确落管计数控制系统及控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095214A (en) * 1934-03-09 1937-10-05 Jr John S Furtado Builder mechanism
US2146435A (en) * 1937-02-24 1939-02-07 Whitin Machine Works Builder mechanism for spinning frames
US2432564A (en) * 1946-06-01 1947-12-16 Celanese Corp Twisting and winding apparatus for transfer tail
US2503099A (en) * 1946-01-07 1950-04-04 Numo Machine And Engineering C Automatic spinning control
US2729399A (en) * 1951-06-18 1956-01-03 Stammwitz Eugen Traverse cam mechanism for winding machines
US2798356A (en) * 1953-10-08 1957-07-09 Boras Wafveri Aktiebolag Devices for causing automatic lowering in spinning machines and twisting machines with fixed spindle banks and movable ring rails

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095214A (en) * 1934-03-09 1937-10-05 Jr John S Furtado Builder mechanism
US2146435A (en) * 1937-02-24 1939-02-07 Whitin Machine Works Builder mechanism for spinning frames
US2503099A (en) * 1946-01-07 1950-04-04 Numo Machine And Engineering C Automatic spinning control
US2432564A (en) * 1946-06-01 1947-12-16 Celanese Corp Twisting and winding apparatus for transfer tail
US2729399A (en) * 1951-06-18 1956-01-03 Stammwitz Eugen Traverse cam mechanism for winding machines
US2798356A (en) * 1953-10-08 1957-07-09 Boras Wafveri Aktiebolag Devices for causing automatic lowering in spinning machines and twisting machines with fixed spindle banks and movable ring rails

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986326A (en) * 1974-03-29 1976-10-19 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Method and apparatus for preventing yarn breakage in ring spinning machines
US4002014A (en) * 1974-12-23 1977-01-11 Grant's Textiles, Incorporated Bear down system for yarn handling machine

Also Published As

Publication number Publication date
BE589452A (nl) 1960-08-01
GB930824A (en) 1963-07-10
ES257372A1 (es) 1960-06-16
CH381580A (de) 1964-08-31

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