EP0448518B1 - Verfahren und Vorrichtung zum synchronen Verbinden von Vorgarnen für eine kontinuierliche Zuführung dieser zu einer Ringspinnmaschine - Google Patents

Verfahren und Vorrichtung zum synchronen Verbinden von Vorgarnen für eine kontinuierliche Zuführung dieser zu einer Ringspinnmaschine Download PDF

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Publication number
EP0448518B1
EP0448518B1 EP19910810184 EP91810184A EP0448518B1 EP 0448518 B1 EP0448518 B1 EP 0448518B1 EP 19910810184 EP19910810184 EP 19910810184 EP 91810184 A EP91810184 A EP 91810184A EP 0448518 B1 EP0448518 B1 EP 0448518B1
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EP
European Patent Office
Prior art keywords
roving
rovings
spinning frame
draft
draft parts
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EP19910810184
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English (en)
French (fr)
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EP0448518A3 (en
EP0448518A2 (de
Inventor
Kenji Sasaki
Shinji Kato
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Howa Machinery Ltd
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Howa Machinery Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing

Definitions

  • the above-mentioned supplemental rovings are combined with corresponding rovings fed from the almost exhausted roving bobbins, respectively, and the rovings, which are connected to the respective roving bobbins, are separated from the combined portion of the rovings immediately after the above-mentioned combination.
  • the above-mentioned unit operation is carried out from one end of the spindle alignment of the ring spinning frame to the other end, by utilizing a roving piecing apparatus having a function of synchronously carrying out the unit operation for a group of a plurality of successive spindles, for example, two to six spindles. It is also possible to carrying out the above-mentioned unit operation manually.
  • the unit operation by the apparatus is carried out by successive operations such as a first operation for reserving supplemental rovings at the respective positions close to the trumpets of the corresponding draft parts, and a second operation, i.e., the joint piecing operation of supplemental rovings with the corresponding rovings, which are fed from the respective roving bobbins, at the above-mentioned positions, and a third operation of cutting the rovings which are supplied from the respective roving bobbins arranged at the creel portion of the ring spinning frame, at the respective positions upstream of the corresponding trumpets of the draft parts, and the above-mentioned unit operation by the apparatus is successively carried out by displacing the apparatus along the spindle alignment.
  • the time required to carry out the roving piecing operation at the time of exchanging almost exhausted roving bobbins for the full packaged roving bobbins, utilizing the above-mentioned known apparatus is fairly long.
  • This problem becomes more serious when producing a coarse count yarn, which is preferably produced by utilizing a ring spinning frame having a larger number of spindles than the standard size spinning frame, because the time required to produce the full size yarn package is shorter than the time required to complete the successive roving piecing operation for all spindles of the ring spinning frame. Accordingly, the above-mentioned roving piecing method and apparatus are not suitable for producing a coarse count yarn.
  • EP-A-0310871 discloses a method and apparatus for carrying out a roving bobbin exchanging operation, wherein an automatic roving bobbin exchanging apparatus is intermittently displaced from one side to the other side of a spinning machine, for carrying out a unit roving bobbin exchanging operation. Accordingly, the EP-A-0310871 has the same drawbacks as the above-mentioned Japanese document.
  • the present invention is intended to overcome the above-mentioned drawbacks. To this end, it has for object a method and apparatus for synchronously piecing roving for a countinuous feeding thereof to a ring spinning frame according to claims 1, respectively 9.
  • the present invention is based on the following technical concept. Namely, it is well known that the yarn piecing operation of a ring spinning frame is carried out in a period between a time at which the size of the yarn package reaches one-third of the full size thereof and a time at which the size of the yarn package becomes 90% of the full size thereof, because the spinning condition, such as a variation of yarn tension, are very stable, and thus the average yarn tension is such that possible yarn breakages will not occur.
  • the roving piecing operation is carried out in a restricted period during which the ring rail takes a position as close as possible to the uppermost position of the ring rail in a chase formation, the roving piecing operation can be carried out in a condition such that possible yarn breakage will not occur.
  • the chase forming is carried out synchronously for all spindles of the ring spinning frame, if the roving piecing operation is synchronously carried out for all of the draft parts for which the roving piecing operation is required, the above-mentioned desirable condition for carrying out the roving piecing operation can be created.
  • supplemental rovings are taken from the corresponding supplemental full size roving bobbins, which are located at the creel position of a ring spinning frame, and these rovings are carried to respective standby reserve positions close to the corresponding rovings being fed to the corresponding draft parts respectively, during the above-mentioned desirable period, and when the roving bobbins mounted at the creel position of a ring spinning frame reach an almost exhausted condition, the supplemental rovings from the supplemental roving bobbins are introduced synchronously into the respective draft parts together with the corresponding rovings from the almost exhausted roving bobbins, while the rovings from the almost exhausted roving bobbins are separated from the above-mentioned rovings which are being fed to the respective draft parts, immediately after the above-mentioned operation, hereinafter referred to as "joint piecing
  • the above-mentioned roving piecing operation is carried out synchronously at all draft parts to which the rovings are being fed from the respective almost exhausted roving bobbins held by a bobbin carriage supported at the creel position of the ring spinning frame.
  • the above-mentioned all draft parts are hereinafter referred to as "all draft parts concerned”. Therefore, the time required to complete the roving piecing operation can be remarkably reduced when compared with the known method.
  • the apparatus for carrying out the above-mentioned method according to the present invention it is essential to provide a means for synchronously reserving free end portions of supplemental rovings taken from the respective supplemental roving bobbins at the respective positions in the trumpets of the corresponding draft parts, wherein each position is close to the passage of the roving fed from the roving bobbin which is supplying the roving to the identical draft part, a means for synchronously introducing the above-mentioned free end portions of the supplemental rovings into the corresponding draft parts in a doubled condition with the corresponding rovings which are being fed from the respective roving bobbins which have reached an almost exhausted condition, so that a joint piecing operation of the respective supplemental rovings to the corresponding rovings which are being fed to the corresponding draft parts is completed, and a means for cutting the rovings at the respective positions upstream of
  • the above-mentioned essential means for carrying out the synchronous roving piecing operation are designed in another combination, i.e., machine elements of the practical apparatus perform parts of the functions of the above-mentioned means respectively, so that the essential function of completing the synchronous roving piecing operation according to the present invention can be created by the combination of the functions of the machine elements of the practical apparatus as hereinafter explained in detail.
  • the present invention is carried out in cooperation with a conventional roving bobbin transporting system utilizing main transporting rails arranged between a room wherein a plurality of roving frames are installed and a room wherein a plurality of ring spinning frames are installed.
  • each bobbin carriage is provided with a plurality of bobbin hangers and is capable of carrying roving bobbins along the transporting rail between a particular position in the roving room and a particular position in the ring spinning frame.
  • This transporting system is well known in the art, however, and therefore, a detailed explanation thereof is omitted, except for the points which are necessary to the explanation of the present invention.
  • horizontal supporting arms 4 are rigidly mounted on upper end portions of creel pillars 3, which are vertically and rigidly mounted on a machine frame 2 of a ring spinning frame, with a predetermined pitch along the lengthwise direction thereof.
  • a pair of transporting rails 5, 6 are secured to these supporting arms 4 in parallel along the lengthwise direction of the spinning frame, whereby a creel portion 1 is formed at each side of the spinning frame.
  • the transporting rails 5 and 6 are connected with a main transporting rail (not shown) at each terminal portion thereof, respectively.
  • the main transporting rail and the transporting rails 5 and 6 have an identical cross-sectional construction. As shown in Fig.
  • these transporting rails are provided with a hollow frame having a rectangular cross section and a guide opening portion 7 formed at a bottom portion of the hollow frame such that the guide opening 7 extends along the lengthwise direction of the hollow frame, so that a pair of inside guide surfaces 8 are formed inside the hollow frame at both sides of the guide opening portion 7, respectively.
  • a bobbin carriage 9 is displaceably supported by the main transporting rail (not shown) and the transporting rails 5, 6.
  • the bobbin carriage 9 is formed by a plurality of carriage elements 9a connected in an alignment, and each carriage element 9a comprises a carriage bar 10 provided with a pair of vertical supporting rods 11, which are disposed on the carriage bar 10 at both end portions thereof, and each supporting rod 11 is provided with a guide roller 14 rotatable about the central axis thereof so that, when the carriage element 9a is assembled with the main transporting rail and the transporting rails 5 and 6, the guide roller 14 is rotatably guided by the opening 7 of the main transporting rail and transporting rails 5 and 6, respectively.
  • a pair of rotation rollers 13 are secured on a horizontal shaft (not shown) which passes rotatably through the vertical supporting rod 11 at the top end portion thereof in a condition such that, when the bobbin carriage 9 is assembled with the main transporting rail and transporting rails 5 and 6, the rotation rollers 13 are able to rotate on the corresponding inside surfaces 8,8 of the hollow frame of the main transporting rail and the transporting rails 5 and 6, respectively.
  • the carriage bar 10 is provided with a plurality of horizontal frames 15 rigidly mounted thereon in a condition such that a pair of horizontal wing portions 15a of an identical length are extended to the outer sides from a central point thereof, and the angle between each wing portion 15a and the lengthwise direction of the carriage bar 10 is 90 degrees.
  • Each horizontal frame 15 is provided with a vertical rod 17 which is projected downwards from the central point thereof. These horizontal frames 15 are arranged at an identical predetermined pitch which is double that of the spindle pitch, and bobbin hangers 16 are rigidly supported by each horizontal frame 15 at both end portions of the wing portions 15a thereof. As shown in Fig. 7, a roving guide 18 is mounted on the bottom end portion of each vertical rod 17, and each roving guide 18 is provided with a pair of guide pins 18a formed at both sides of the vertical rod 17 in a condition such that each guide pin 18a is directed upward. A plurality of the carriage bars 9a are connected in alignment by utilizing universal joints 19 to form the bobbin carriage 9, so that the number of bobbin hangers 16 of each bobbin carriage 9 is identical to 1/2 the number of spindles at each side of the spinning frame.
  • the above-mentioned bobbin carriage 9 is transported along the main transporting rail and the transporting rails 5 and 6 by a suitable means for displacing the bobbin carriage between the roving room and the ring spinning room, such as a carrying apparatus (e.g., a battery car as disclosed by Japanese Unexamined Patent Publication Sho 62 [1987]-263332, etc.).
  • a carrying apparatus e.g., a battery car as disclosed by Japanese Unexamined Patent Publication Sho 62 [1987]-263332, etc.
  • a supporting bar 21 is rigidly mounted on each creel pillar 3 and a pair of guide bars 22, 23 are horizontally supported by the supporting bars 21 in a condition such that these guide bars 22, 23 extend the entire length of the spindle alignment of each side of the spinning frame, so that rovings S1 supplied from the respective bobbins supported by the corresponding bobbin hangers 16 of the bobbin carriage 9 positioned at the creel position of the ring spinning frame are fed to the corresponding draft parts by way of the roving guides 18 and roving guide bars 22, 23.
  • the rovings S2 from the supplemental roving bobbins supported by the corresponding bobbin hangers 16 of the bobbin carriage 9 positioned at the other creel position of the ring spinning frame are also introduced to the corresponding draft parts in the same condition as mentioned above, when the synchronous roving piecing operation according to the present invention is carried out.
  • the draft parts 30 are disposed on the corresponding roller stands 31 at a position below the arrangement of the supporting arms 21.
  • the main portion of the synchronous roving piecing apparatus of the present invention is shown in Figs. 1 and 3. That is, in each draft part 30, top rollers 35, 36, and 37 are disposed on a front roller 32, a second roller 33 and back roller 34, respectively, in a rotatable condition at both sides of a top arm 38, and trumpet 39 is disposed at an entrance of each back roller 34.
  • the opening portion of the trumpet 39 is expanded to be larger than that of the conventional trumpet to attain the purpose of the present invention. Namely, since the opening of the trumpet 39 is expanded, the rovings S1 and S2 can be introduced therein synchronously when the roving piecing operation of the present invention is carried out.
  • a supplemental common feed roller 40 is rotatably mounted in the draft parts of the spinning frame at a position closely upstream of the trumpets 39 in a condition such that the roller 40 extends along the entire length of the spinning frame.
  • the supplemental feed roller 40 is driven by a suitable drive system 41 such as a gear train, at a surface rotation speed equal to that of the back roller 34 and the starting and stopping of the rotation of the roller 40 is controlled by a clutch and brake mechanism comprising a clutch and a brake 42a, which is arranged between the drive system and the supplemental feed roller 40, as shown in Figs. 1 and 2.
  • a bifurcate lever 43 is provided and comprises two elementary lever portions connected to each other, and is mounted in swingable condition about a horizontal shaft mounted on each top arm 38, and a horizontal supporting shaft 44 is mounted so that a pair of nip rollers 44a and 44b are rotatably mounted on the shaft 44 in a condition such that these nip rollers 44a and 44b are projected toward an outer side from the top arm 38 respectively, to take respective positions at both sides of the roving S1 supplied to the corresponding draft part as shown in Figs. 1 and 2.
  • Each bifurcate lever 43 is provided with a coil expansion spring 45 between the top arm 38 and the upper elementary lever portion so that, when the top arm 38 is set at the working position thereof, the nip rollers 44a and 44b are pressed against the supplemental feed roller 40 in a rotatable condition as shown in Fig. 3. Therefore, the above-mentioned contact between the supplemental feed shaft 40 and the nip rollers 44a, 44b can be released by turning the lever 43 upwards about the horizontal axis of the top arm 38.
  • a solid support member 50 is rigidly mounted on each roll, stand 31 as shown in Fig. 1.
  • Each solid support member 51 is provided with a guide groove 50a having a rectangular cross section.
  • a roving guide member 51 extending the entire length of the spindle alignment is slidably inserted in the guide groove 50a of each solid supporting member 50, for controlling the supply direction of the rovings S1 and S2, respectively, to the trumpet 39 of each draft unit 30.
  • the roving guide member 51 comprises a solid rod 51a having a rectangular cross section and provided with a plurality of sets of three guide pins 51b, 51c and 51d planted vertically on the upper surface thereof in the respective positions for controlling the introducing positions of the sliver S1 and the sliver S2 into each draft part 30.
  • a bracket 53 is connected to a piston rod 52a of a reciprocal pneumatic cylinder 52, so that the transversal reciprocal motion of the roving guide member 51 along the lengthwise direction of the spinning frame can be obtained.
  • the relative position between the arrangement of the guide pins 51b, 51c and 51d and the arrangement of the nip rollers 44a and 44b is designed to satisfy the following condition.
  • the roving guide member 51 is to act as a means for synchronously cutting the slivers S1 fed to the corresponding draft parts 30.
  • the rovings S1 are continuously supplied from the roving bobbins S of two parallel alignments of the bobbin carriage 9 temporarily located at a creel position of a ring spinning frame represented by the transporting rail 5, at corresponding draft parts of each side of the ring spinning frame, respectively in each draft part 30, the roving S1 is introduced to the trumpet 39 of the corresponding draft part 30 by way of the roving guide 18, the roving guide bars 22 and 23, and the intervening space 55a, and therefore, a bundle of fibers delivered from the draft part 30 is twisted and wound on a bobbin mounted on the corresponding spindle.
  • the clutch 42 of the supplemental feed roller 40 is released, and synchronously the brake 42a is actuated, and the following operation is carried out successively at all draft parts 30 of the spinning frame, that is, a supplemental roving S2 is taken from the corresponding full packaged roving bobbin F, and then a free end portion of the roving S2 is introduced to the roving guide bar 23 so that the free end portion of the roving S2 is temporarily hung on the roving guide bar 23.
  • the above-mentioned free end portion of the roving S2 is inserted to an intervening space 33a between the nip roller 44b and the supplemental feed roller 40 via a roving guide intervening space 55b, immediately after the lever 43 of the top arm 38 is turned upward about the axial center thereof to thereby separate the nip rollers 44a and 44b from the supplemental feed roller 40, so that the free end of the supplemental roving S2 is introduced to a position inside the trumpet 39 in a condition such that the free end of the roving S2 is close to the running roving S1, and thereafter, the lever 43 is turned back to the normal position at which the nip rollers 44a and 44b are in rotatable contact with the supplemental feed roller 40.
  • the supplemental roving S2 is gripped by the nip roller 44b and the supplemental feed roller 40 which is held stationary (Fig. 3).
  • the above-mentioned operation is carried out to all draft parts 30 concerned at each side of the spinning frame.
  • the rotation of the supplemental feed roller 40 is started at the same surface rotation speed as that of the back roller 34, so that the supplemental roving S2 maintained at the standby position in the trumpet 39 of each draft part 30, is carried to the running position of the roving S1, and accordingly, the roving S2 is fed to the back roller 34 of each draft part synchronously, so that the supplemental roving S2 is introduced to the back roller 34 of each draft part 30. Therefore, a joint piecing of the rovings is carried out synchronously at the all draft parts 30 concerned at each side of the ring spinning frame.
  • the piston rod 52a of the reciprocal cylinder 52 is actuated to project outwards as shown in Fig. 2, so that the roving guide member 51 is displaced in a direction identical to the projected direction of the piston rod 52a (right-hand direction in Fig. 2).
  • the roving S1 and the supplemental roving S2 are displaced toward the above-mentioned direction, by the guide pins 51b, 51c and 51d respectively, so that the roving S1 is displaced to a position at which the roving S1 is passed through the nip point between the nip roller 44a and the supplemental roving feed roller 40.
  • the free end portion of the supplemental roving S2 which was doubled with the running roving S1 by the above-mentioned joint piecing operation, is displaced to the intervening space between the supporting shaft 44 and an intervening portion of the supplemental roving feed roller 40 between the nip rollers 44a and 44b, from the condition of gripping the free end portion of supplemental roving S2 between the nip roller 44b and the supplemental roving feed roller 40.
  • the clutch 42 is actuated to stop the transmission of power and the brake 42a is actuated to instantly stop the rotation of the supplemental roving feed roller 40.
  • the rovings S1 from the almost exhausted roving bobbins S are synchronously cut in a condition such that the rovings S1 are still gripped by the corresponding nip roller 44a and the supplemental roving feed roller 40.
  • all of the rovings S1 from the almost exhausted roving bobbins S of the bobbin carriage 9 supported by the transporting rail 5, are synchronously cut at the respective positions close upstream of the supplemental feed roller 40, respectively.
  • the lever 43 is turned upward about the axial center of the supporting shaft 43a mounted on each top arm 38, so that the grip to the roving S1 by the respective nip roller 44a and the supplemental roving feed roller 40 are released, and thereafter, the rovings S1 connected to the almost exhausted roving bobbins S are successively rewound by the corresponding roving bobbin S of the bobbin carriage 9 supported by the transporting rail 5, with respect to all draft parts 30 concerned.
  • the bobbin carriage 9 supporting the almost exhausted roving bobbins S is displaced from the transporting rail 5 to the roving room, and a bobbin carriage supporting full packaged roving bobbins F is introduced to the transporting rail 5 from which the bobbin carriage having the almost exhausted roving bobbins S has been discharged.
  • the operation can be carried out regardless of the time required for completing the formation of full yarn packages, and of the number of spindles, and since the roving piecing operation according to the present invention is carried out under a preferable condition such that the ring rail is located at the uppermost position in the chase formation, wherein the ballooning is very small, possible yarn breakages can be easily prevented.
  • a bobbin carriage 9 having a plurality of bobbin hangers, a number of which is 1/2 of the total number of spindles arranged on each side of the spinning frame, is displacably supported.
  • a pair of roving guide members 61 and 62 are disposed at respective positions behind the supplemental roving feed roller 40 in a condition such that they can be displaced along the lengthwise direction of the spinning frame.
  • a pair of roving guide members 61 and 62 are utilized, and a plurality of groups of three guide pins 61b, 61c and 61d are planted vertically to the respective positions of the roving guide members 61, and a plurality of three guide pins 62b, 62c, and 62d are planted vertically to the roving guide member 62.
  • the plurality of groups of guide members 61b, 61c, and 61d introduce roving to corresponding draft parts 30 which form a group of alternate draft parts of the alignment of all of the draft parts 30 arranged at one side of the ring spinning frame, and a plurality of groups of the guide members 62b, 62c, and 62d introduce roving to corresponding draft parts 30 which form other alternate draft parts in an identical alignment of the draft parts 30 at each side of the spinning frame.
  • the roving guide members 61, 62 are displaced along the lengthwise direction of the spinning frame by the action of the reciprocal pneumatic cylinders 63 and 64 respectively, as in the first embodiment.
  • machine elements having the same function as the machine elements of the first embodiment are identified by the same reference numerals as used in Fig. 10.
  • the transporting rails 5a and 5b support the respective bobbin carriage 9 holding the roving bobbins S for feeding rovings to the corresponding draft parts 30 of the spinning frame.
  • the successive roving piecing operation applied to the roving bobbins S of the bobbin carriage 9 supported by the transporting rail 5a and the full packaged roving bobbins F of the bobbin carriage 9 supported by the transporting rail 5c is hereinafter explained in detail.
  • the number of full packaged roving bobbins F is a 1/2 of the number of spindles at each side of the spinning frame, and the supplemental rovings S2 taken from the respective full packaged roving bobbins F are introduced to the respective positions in the trumpets of the corresponding draft parts respectively in almost the manner as in the first embodiment, and then free end portions of the supplemental rovings S2 are nipped by the nip roller 44b and the supplemental roving feed roller 40 at the respective positions upstream of the corresponding draft parts 30.
  • the free end portion of the above-mentioned supplemental roving S2 takes a position close to the roving S1, which is supplied to the corresponding draft part 30 in the trumpet 39 thereof, and the rovings 61 and 62 take a position controlled by the roving guide member 62 as shown in Fig. 10.
  • the following synchronous roving piecing operation is started in a preferable condition such that the ring rail of the spinning frame takes a position close to the uppermost position in the chase formation.
  • the synchronous roving piecing operation is carried out during a period in which the size of the yarn package becomes 30% of the full size yarn package and the size of the yarn package becomes 90% of the full yarn package.
  • the synchronous roving piecing operation is carried out as follows: First, the clutch 42 is connected and synchronously, the action of the brake 42a is released so that the rotation of the supplemental roving feed roller 40 is started at a surface rotation speed identical to that of the back roller 34. According to this operation, the free end of the supplemental roving S2 is doubled with the roving S1 supplied and introduced into the corresponding draft part 30, whereby the joint piecing of two rovings S1 and S2 is performed.
  • the roving guide member 62 is displaced only for a predetermined distance along the lengthwise direction of the spinning frame (in Fig.
  • the cut rovings S1 connected to the respective roving bobbins S which are created by the above-mentioned synchronous operation, are rewound on the corresponding almost exhausted roving bobbins S and then the bobbin carriage 9 holding these almost exhausted roving bobbins S is discharged from the transporting rail 5a of the spinning frame and a fresh bobbin carriage 9 holding full packaged roving bobbins F is introduced the transporting rail 5a to replace the above-mentioned bobbin carriage 9 discharged therefrom.
  • the rovings S2 from the above-mentioned fresh full packaged roving bobbins F are introduced to the respective trumpets 39 of the corresponding draft parts 30 which form the other alternate draft parts of the identical alignment of all draft parts 30 at each side of the spinning frame. (draft parts 30 positioned at the left-hand side with respect to each top arm 38), by passing through the respective roving guide intervening spaces 65b formed between each pair of guide pins 61c and 61d of the roving guide member 61, while the free end of each roving S2 is nipped by the corresponding nip roller 44b and the supplemental roving guide roller 40.
  • the synchronous roving piecing operation is carried out by a method almost identical to the above-mentioned synchronous roving piecing operation, except that the roving guide member 61 is displaced only towards the direction opposite to the first embodiment (left-hand side in Fig. 11).
  • the construction of the apparatus of the third embodiment differs from the second embodiment only in the construction of the roving guide member. That is, in the third embodiment, a single roving guide member formed by a line shaft 71 is extended for the entire length of the spindle alignment of the ring spinning frame, instead of utilizing a pair of roving guide members 61 and 62 as in the second embodiment.
  • the line shaft 71 is mounted on the spinning frame in a condition such that the line shaft 71 is able to rotate about the axis thereof, and able to slide along the axis thereof.
  • One end of the line shaft 71 is rotatably supported by a shift-plate 72 as shown in Fig. 13.
  • the shift-plate 72 is connected to a piston rod 52a of a pneumatic cylinder 52, a motor 73 is rigidly mounted on the shift-plate 72, and the line shaft 71 is rotated by 180 degrees once, by a suitable power transmission system such as an endless chain driving system, when the motor 73 is actuated.
  • a suitable power transmission system such as an endless chain driving system
  • the line shaft 71 is provided with two groups of guide means, one group consisting of a pair of guide grooves 75a and 75b, and the other group consisting of a pair of guide groups 76a and 76b.
  • the pairs of guide grooves belonging to one group and the pairs of guide grooves belonging to the other group are alternately formed in the line shaft, and these first pairs of grooves 75a, 75b, and the second pairs of grooves 76a, 76b, are formed in the line shaft 71 in a condition such that the angular phase difference between the first pairs of grooves 75a, 75b and the second pairs of grooves 76a, 76b is 180 degrees, as shown in Fig. 15.
  • first pairs of grooves 75a, 75b and the second pairs of grooves 76a, 76b is such that, when the first pair of guide grooves 75a, 75b face one of the corresponding nip rollers 44a, 44b, the second pair of guide grooves 76a, 76b face the respective intervening positions between the corresponding pairs of the nip rollers 44a and 44b.
  • each roving S1 from the corresponding roving bobbin S is introduced to the trumpet 39 of the corresponding draft part 30 after passing a position below the line shaft 71.
  • the rovings S1 passes through the roving guide groove 75a, which is facing downwards, to the corresponding draft part 30 as shown in Fig. 13.
  • the supplemental rovings S2 are taken from the full packaged roving bobbins F and then introduced to the respective nip rollers 44b of the corresponding draft parts 30, and the free end portions of the supplemental rovings F are nipped between the nip roller 44b of the corresponding draft part 30 and the supplemental roving feed roller 40.
  • the supplemental rovings S2 are supplied to the corresponding draft parts 30 by rotating the supplemental roving feed roller 40 by the operation of the clutch 42 and the brake 42a.
  • the line shaft 71 is synchronously displaced toward the direction of the nip rollers 44a (left-hand side in Fig. 13) so that the supplied roving S1 is nipped by the nip roller 44a of the corresponding draft part 30 and the supplemental roving feed roller 40, while the supplemental roving S2 is released from the nipping action by the nip roller 44b of the corresponding draft part 30 and the supplemental roving feed roller 40.
  • the joint piecing of the roving S2 with the roving S1 is carried out synchronously in the draft parts 30 which are alternate draft parts of the alignment of the draft parts 30 at each side of the ring spinning frame.
  • the rovings S1 connected to the respective almost exhausted roving S are synchronously cut by the action of the clutch 42 and the brake 42a, as described in the second embodiment and thereafter, these rovings S1 are rewound on the corresponding almost exhausted roving bobbins S of the bobbin carriage 9 supported by the transporting rail 5a, and this bobbin carriage 9 is discharged from the transporting rail 5a.
  • a fresh bobbin carriage 9 holding the full packaged roving bobbins F is carried to the transporting rail 5a.
  • the roving guide grooves 76a and 76b are in the respective positions facing upward, the rovings S1 which are supplied to the corresponding draft parts are not displaced towards the nip roller 44a of each draft part 30, but are introduced into the corresponding guide groove 76a of each draft part 30, where the roving guide groove 76a faces the nip roller 44a of each corresponding draft part 30.
  • the motor 73 is actuated so that the line shaft 71 is turned by 180 degrees, and accordingly, the positions of the pairs of the roving guide grooves 76a and 76b, which are facing the other rovings S1, are changed to the respective positions facing downward, and accordingly,the another rovings S1 are introduced into the corresponding roving guide grooves 76b.
  • the supplemental rovings S2 taken from the full packaged roving bobbins F of the bobbin carriage 9 supported by the transporting rail 5a are introduced to the respective positions close to the mity to the corresponding nip rollers 44a respectively, by way of the corresponding roving guide grooves 76a facing the respective nip rollers 44a, and then nipped by the corresponding nip rollers 44a and the supplemental roving feed roller 40, and the synchronous roving piecing operation is carried out after displacing the line shaft 71 towards the direction opposite to the direction of the previous synchronous roving piecing operation (right-hand side in Fig. 13).
  • the fourth embodiment of the present invention is hereinafter explained in detail with reference to Figs. 16, 17, and 18.
  • the roving S1, which are supplied from the respective almost exhausted roving bobbins S1 are synchronously cut by a cutting means at the respective positions upstream of the respective draft parts, and the supplemental roving S2 are synchronously supplied to the corresponding draft parts together with the roving S1 which are separated from the respective roving S1 connected to the corresponding roving bobbins S after the above-mentioned cutting operation or synchronously therewith, to carry out the above-mentioned cutting operation.
  • the roving cutting means 80 comprises a line shaft 71 supported by a supporting member 50 at a position upstream of the supplemental feed roller 40, and a cutting shaft 81 which is rotatably supported by the supporting member 50 in parallel to the line shaft 71, at a position below the shaft 71.
  • the shaft 71 is able to rotate about the axial center thereof and is able to be synchronously displaced along the axial direction thereof.
  • the line shaft 71 is provided with roving guide grooves 75a for guiding rovings S, which are supplied from the respective roving bobbins S, to the group of draft parts 30 which are alternate draft parts 30 of the alignment of the draft parts 30 at each side of the spinning frame, and with roving guide grooves 76a for guiding the rovings S1 to the group of the draft parts 30 which are other alternate draft parts 30 of the alignment of the draft parts 30, and these roving guide grooves 75a and the roving guide grooves 76a are formed in a condition such that the angular phase difference between each roving guide groove 75a and each roving guide groove 76a is 180 degrees about the axial center of the line shaft 71.
  • the cutting shaft 81 is provided with a group of cutting members 82, which are planted on the cutting shaft 81 vertical to the axis thereof, and another group of cutting members 83 which are planted on the cutting shaft 81 vertical to the axis thereof.
  • the cutting members 82 can be inserted to the corresponding roving guide grooves 75a respectively, and the cutting members 83 can be inserted into the corresponding roving guide grooves 76a respectively.
  • One end portion of the cutting shaft 81 is connected to a shaft of a drive pulley 84a driven by a drive motor 84 rigidly mounted on a machine frame 2 of the spinning frame, by way of a drive system 85 such as an endless chain drive system, and the cutting shaft 81 is able to be turned 180 degrees about the axis thereof once when required.
  • a drive system 85 such as an endless chain drive system
  • the rovings S1 are introduced to the respective trumpets 39 of the corresponding draft parts 30 after passing through the respective passages above the cutting shaft 81 and below the line shaft 71.
  • the rovings S1 are introduced into the respective roving grooves 75a of the line shaft 71, because these guide grooves 75a face downward. Since the cutting shaft 81 is able to be rotated in a direction which is opposite to the rotating direction of the back roller 34 of the draft parts 30, when the cutting members 82 (83) are inserted to the corresponding roving guide grooves 75a (76a) while turning, the rovings S1 can be easily cut by the cutting members 82 (83) and the corresponding roving guide grooves 75a (76a).
  • the supplemental rovings S2 are taken from the respective full packaged roving bobbins F and introduced to the respective nip rollers 44b of the corresponding draft parts 30, and held there in a condition such that these supplemental roving S2 are nipped between the corresponding nip rollers 44b and the supplemental roving feeding shaft 40.
  • the motor 84 is actuated automatically or by a manual operation of a switch, so that the cutting shaft 81 is turned by 180 degrees about the axis thereof toward the direction indicated by an arrow in Fig. 18.
  • the rovings S1 which are supplied from the almost exhausted rovings of the bobbin carriage 9, are cut by gripping between the respective cutting members and the corresponding roving guide grooves 75a.
  • Each roving S1 which is cut and continuously fed to the corresponding draft part 30 remains a certain length in the region upstream of the trumpet 39 of the corresponding draft part 30, and the above-mentioned remaining portion of the roving S1 is eliminated when this portion is introduced to the corresponding draft part 30.
  • the clutch 42 is temporarily actuated to connect the component shafts thereof so that the supplemental rovings S2 are synchronously fed to the respective trumpets 39 of the corresponding draft parts 30.
  • the line shaft 71 is synchronously displaced towards a direction along the axis thereof so that the supplemental rovings S2 are released from the nipping action by the corresponding nip roller 44 and the supplemental roving feed roller 40.
  • the above-mentioned displacement of the line shaft 71 is carried out towards the left-hand side in Fig. 16.
  • the supplemental rovings S2 are continuously fed to the respective trumpets 39 of the corresponding draft parts 30 through the intervening space between the corresponding nip roller 44b and the top arm 38 thereof, so that the synchronous roving piecing operation applied to half the number of draft parts at each side of the spinning frame is completed.
  • the line shaft 71 is turned 180 degrees about the axis thereof so that the supplemental rovings S2 are nipped by the nip rollers 44a of each pair of nip rollers 44a and 44b and the supplemental roving feed roller 40.
  • the supplemental rovings S2 are introduced to the respective nip rollers 44a of the corresponding draft parts 30 so that the supplemental rovings S2 are nipped by the respective nip rollers 44a of the corresponding draft parts 30 and the supplemental roving feed roller 40, respectively.
  • the cutting roller 81 is turned by 180 degrees about the axis thereof, and the cutting members 83 are inserted to the respective roving guide grooves 76b facing the corresponding draft units 30 respectively, so that the rovings S1 from the respective roving bobbins S of the bobbin carriage 9 are respectively cut.
  • the supplemental roving feed roller 40 is temporarily rotated by actuating the clutch 42 and the brake 42a, whereby the supplemental rovings S2 are synchronously introduced to the trumpets 39 of the corresponding draft parts 30, and the supplemental rovings S2 are released from the nipping action by the respective nip rollers 44a and the supplemental roving feed roller 40 by displacing the line shaft 71 in the direction towards the right-hand side in Fig. 16.
  • the synchronous roving piecing operation applied to the other all draft parts concerned at each side of the roving frame is completed according to the above-mentioned stepped operation.
  • the cutting means 80 comprising the cutting shaft 81 and the cutting members 82, 83 is utilized, but instead of the cutting means 80, a mechanism for separating rovings into two portions by applying a tensile force thereto can be applied.
  • a pair of roving guide rods 51A and 51B are mounted on the respective guide grooves (not shown) of supporting members (not shown) rigidly mounted on the roller stands 31, in a condition such that these rods 51A and 51B are reciprocally slidable along the lengthwise direction of the spinning frame.
  • These roving guide rods 51A and 51B have a rectangular cross section.
  • the roving guide rod 51A extends along the entire length of the spindle alignment of each side of the spinning frame, and is provided with a plurality of pairs of guide pins 51Ab and 51Ac planted at positions facing each draft part 30, with a predetermined intervening space therebetween.
  • the roving guide rod 51B also extends along the entire length of the spindle alignment at each side of the spinning frame, and a plurality of roving guide pins 51Bd are planted on the rod 51B facing each draft part 30.
  • the above-mentioned roving cutting means is provided with a function such that, when the roving guide rods 51Ab, 51Ac are relatively displaced along the lengthwise direction thereof and cause the guide pins 51Ab, 51Ac of the guide rod 51A to approach the corresponding guide pins 51Bd of the guide rod 51B, the rovings S1 which are supplied from the respective roving bobbins S of the bobbin carriage 9 supported by the transporting rail 5 (Fig. 9) are gripped by the corresponding guide pins 51Ab, 51Ac and the guide pins 51Bd of the corresponding draft parts 30, respectively. Accordingly, when the rod 51B is displaced in the left-hand direction in Fig.
  • each roving S1 is gripped by the respective pins 51Ab and the pins 51Bd, and thus the rovings S1, which are continuously introduced to the corresponding draft parts 30 by the continuous rotation of the draft rollers of each draft part, are separated from the gripped portion of the corresponding rovings S1.
  • the following modification can be made. Namely, as a modification of the above embodiments, after the supplemental rovings S2 are introduced into the corresponding draft parts 30 respectively, together with the corresponding rovings S1, the spinning operation of the spinning frame is temporarily stopped and the rovings S1 are synchronously cut at the respective positions close upstream of the respective trumpets 39 of the corresponding draft parts 30, by a manual operation, and the spinning operation of the spinning frame is restarted after the completion of the manual operation.
  • the spinning operation of the spinning frame can be automatically stopped by a signal indicating the most preferable time for stopping the drive of the spinning frame, or the drive of the spinning frame is topped by a manual switching. Therefore, in the above modification, the brake 42a, or the combination of the brake 42a and the roving cutting means 80 can be omitted.
  • the modification applied to the first, second and third embodiments mentioned above can be also applied to the fourth embodiment. That is, in this modification for cutting the rovings S1 which are supplied to the corresponding draft parts 30, the spinning operation of the spinning frame is temporarily stopped and the rovings S1 are successively cut at the respective positions upstream of the corresponding draft parts 30 by a manual operation, while the drive of the spinning frame is stopped, and after the completion of the above operation, the drive of the spinning frame is restarted so that the cut portions thereof, which remained at the side of the corresponding draft parts, are introduced to the corresponding draft parts.
  • the clutch 42 is actuated to introduce the respective supplemental rovings S2 into the corresponding draft parts 30 together with the corresponding free ends of the above-mentioned cut portions of the corresponding rovings S1, and after the free ends of the rovings S1 are completely introduced into the corresponding draft parts 30, the reciprocal pneumatic cylinder 52 is actuated so that the line shaft 71 is displaced towards the left hand side in Fig. 1, and consequently, the guide pins 51b displace the corresponding supplemental rovings S2 towards the left hand direction in Fig.
  • the roving piecing operation at the time of changing almost exhausted roving bobbins for the full packaged roving bobbins can be carried out within a very short time due to the application of the synchronous roving piecing method according to the present invention. Therefore, the roving piecing operation can be completed during the formation of a chase in a condition such that the ring rail takes a position close to the uppermost position of each chase formation where the spinning condition is stable, whereby possible yarn breakages are effectively prevented.
  • the time required to complete the roving piecing operation when changing the almost exhausted roving bobbins for the full packaged roving bobbins can be remarkably reduced, i.e., the above roving bobbin exchange operation can be carried out within a remarkably shorter time than in the conventional method, the working efficiency of the spinning frame can be remarkably improved. This is very advantageous when producing a coarse yarn.
  • the supplemental rovings S2 are taken from the respective full packaged roving bobbins F of a bobbin carriage supported by a transporting rail of the spinning frame and held at the respective positions close to the corresponding rovings S1, which are supplied to the corresponding draft parts 30, before the roving bobbins S reach an almost exhausted condition, and accordingly, the time necessary to complete the operation of taking the supplemental rovings S2 from the respective full packaged roving bobbins F and carrying out the roving piecing operation is variable, and thus the roving bobbin exchange operation can be carried out under very free conditions in comparison with the conventional method.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (14)

  1. Verfahren, um synchron Vorgarn in einer Ringspinnmaschine (2) anzulegen, die versehen ist mit einer Mehrzahl von beidseitig von ihr aufgereihten Spindeln, mit einem Aufsteckgatterabschnitt, mit zwei Gruppen von Zugteilen (30), die aus je einer gleichen Zahl von abwechselnd entlang dieses gesamten Abschnittes angeordneten Zugteilen (30) bestehen, und zwar in Verbindung mit der Benutzung eines Transportsystems für Vorgarnspulen, das eine Mehrzahl von Vorgarnspulentransportschienen (5, 6, 5a, 5b, 5c) umfasst, die parallel an dem benannten Aufsteckgatterabschnitt entlang einer ganzen Längenabmessung der benannten Ringspinnmaschine (2) verlegt sind, wobei jede der benannten Transportschienen (5, 6, 5a, 5b, 5c) in der Lage ist, zeitweise eine Wickeleinrichtung (9) zu halten, die eine Mehrzahl von Vorgarnspulen (S) trägt, von denen Vorgarnstränge (S1) zu entsprechenden Zugteilen (30) der benannten Ringspinnmaschine (2) geliefert werden, während andere der benannten Transportschienen (5, 6, 5a, 5b, 5c) in der Lage sind, zeitweise eine andere Wickeleinrichtung (9) zu halten, die eine Mehrzahl von vollen Vorgarnspulen (F) trägt, und die Anzahl der benannten Wickeleinrichtungen (9) identisch ist, und worin zu dem Zeitpunkt, wenn die benannten Vorgarnspulen (S), die von der benannten, von einer der benannten Transportschienen gehaltenen Wickeleinrichtung getragen werden, fast entleert worden sind, die benannten Vorgarnstränge (S1), die von den benannten, fast entleerten Vorgarnspulen (S) zugeführt werden, an entsprechende Vorgarnstränge (S2) angelegt werden, die von den jeweiligen benannten, vollen Vorgarnspulen (F) genommen werden, gekennzeichnet durch
    einen Schritt, in dem synchron freie Enden der benannten Vorgarnstränge (S2), die von den benannten vollen Vorgarnspulen (F) genommen werden, an entsprechenden Punkten reserviert werden, die den entsprechenden Vorgarnsträngen (S1) gegenüberliegen, die von den benannten Vorgarnspulen (S) an entsprechenden Punkten vor den benannten Zugteilen (30) einer entsprechenden Gruppe zugeführt werden, nachdem die benannten Vorgarnstränge (S2) von den benannten vollen Vorgarnspulen (F) genommen worden sind;
    einen Schritt, in dem ein Strangende der benannten Vorgarnstränge (S1) von jeder der benannten, fast entleerten Vorgarnspulen (S) zu dem Zeitpunkt geschaffen wird, zu dem die benannte synchrone Vorgarnanlegeoperation ausgeführt wird;
    einen Schritt, in dem die benannten reservierten, freien Endabschnitte der benannten, von den benannten vollen Vorgarnspulen (F) genommenen Vorgarnstränge (S2) synchron in entsprechende Zugteile (30) eingeführt werden, und zwar so, dass die benannten reservierten, freien Enden der benannten Vorgarnstränge (S2) mit benannten, entsprechenden Strangenden der benannten Vorgarnstränge (S1) gepaart werden.
  2. Verfahren gemäss Anspruch 1, um synchron Vorgarn in einer Ringspinnmaschine anzulegen, worin der benannte Schritt, in dem ein Strangende der benannten Vorgarnstränge (S1) von jeder der benannten, fast entleerten Vorgarnspulen (S) geschaffen wird, dadurch ausgeführt wird, dass die benannten Vorgarnstränge (S1) von den benannten Vorgarnspulen (S) an den entsprechenden Punkten vor den benannten Zugteilen (30) der entsprechenden, benannten Gruppe dann synchron abgeschnitten werden, wenn die benannten Vorgarnspulen (S) fast entleert sind, so dass freie Enden der benannten Vorgarnstränge (S1) an den benannten, entsprechenden Punkten geschaffen werden.
  3. Verfahren gemäss Anspruch 2, um synchron Vorgarn in einer Ringspinnmaschine anzulegen, worin die benannte synchrone Vorgarnanlegeoperation ausgeführt wird, während der Spinnvorgang in der benannten Ringspinnmaschine (2) fortgesetzt wird.
  4. Verfahren gemäss Anspruch 1, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin der benannte Schritt, ein Strangende der benannten Vorgarnstränge (S1) von jeder der benannten, fast entleerten Vorgarnspulen (S) zu schaffen, ausgeführt wird, nachdem der Spinnvorgang in der benannten Spinnmaschine (2) angehalten worden ist und der benannte Spinnvorgang dann wieder begonnen wird, und worin der benannte Schritt, in dem die entsprechenden reservierten, freien Enden der benannten Vorgarnstränge (S2) eingeführt werden, zu dem Zeitpunkt ausgeführt wird, wenn jedes Strangende der benannten Vorgarnstränge (S1) von den benannten, fast entleerten Vorgarnspulen (S) an dem entsprechenden reservierten, benannten Punkt der benannten freien Enden der von den benannten vollen Vorgarnspulen (F) genommenen, benannten Vorgarnstränge (S2) anlangt.
  5. Verfahren gemäss Anspruch 1, worin die benannte Einführung der entsprechenden reservierten, freien Enden der benannten Vorgarnstränge (S2) von den benannten vollen Vorgarnspulen (F) in die entsprechenden Zugteile (30) erfolgt, unmittelbar nachdem die benannten Vorgarnstränge (S1) von den benannten Vorgarnspulen (S) abgeschnitten worden sind, um die benannten Strangenden an den benannten Vorgarnsträngen (S1) von den benannten Vorgarnspulen (S) zu schaffen.
  6. Verfahren gemäss Anspruch 1, worin der benannte Schritt der synchronen Einführung der benannten reservierten, freien Endabschnitte der benannten Vorgarnstränge (S2) von den benannten vollen Vorgarnspulen (F) und der benannten Vorgarnstränge (S1) von den entsprechenden Vorgarnspulen (S) ausgeführt wird, indem (a) der benannte reservierte, freie Endabschnitt der benannten Vorgarnstränge (S2) von jeder der benannten vollen Vorgarnspulen (F) zusammen mit einem entsprechenden der benannten Vorgarnstränge (S1) von den entsprechenden Vorgarnspulen (S) dem entsprechenden der benannten Zugteile zugeführt wird, wenn die benannten Vorgarnspulen (S) fast entleert sind, und (b) der benannte Vorgarnstrang (S1) von jeder der benannten Vorgarnspulen (S) an einem der Punkte nahe vor dem benannten Zugteil zu einem im wesentlichen identischen Zeitpunkt abgeschnitten wird, wenn der benannte freie Endabschnitt des benannten Vorgarnstranges (S2) von jeder der benannten vollen Vorgarnspulen (F) das entsprechende Zugteil (30) erreicht.
  7. Verfahren gemäss Anspruch 1, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin die Anzahl der benannten Transportschienen (5, 6) zwei ist und jede der benannten Wickeleinrichtungen (9) mit einer Mehrzahl von in zwei Längsreihen dazu angeordneten Hängespulenvorrichtungen (16) versehen ist, wobei die Anzahl der benannten Hängespulenvorrichtungen (16) in jeder Reihe identisch ist mit der Anzahl der Zugteile (30) in jeder der benannten Gruppen von Zugteilen, das heisst, die halbe Anzahl von Spulen auf jeder Seite der benannten Ringspinnmaschine (2), wobei eine der benannten Wickeleinrichtungen (9) Vorgarnspulen (S) trägt, von denen Vorgarnstränge (S1) zu allen Zugteilen (30) auf beiden Seiten der benannten Ringspinnmaschine (2) geliefert werden, während die andere der benannten Wickeleinrichtungen (9) volle Vorgarnspulen (F) trägt.
  8. Verfahren gemäss Anspruch 1, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin die benannte Anzahl der benannten Transportschienen (5a, 5b, 5c) drei ist und jede der benannten Wickeleinrichtungen (9) mit einer Mehrzahl von Hängespulenvorrichtungen (16) versehen ist, die in einer einzelnen Reihe längs dazu angeordnet sind, wobei die benannte Anzahl der benannten Hängespulenvorrichtungen (16) in jeder Wickeleinrichtung (9) mit der Anzahl der Zugteile (30) in jeder der benannten Gruppen von Zugteilen identisch ist, d.h. jeweils die halbe Anzahl der Spindeln auf jeder der beiden Seiten der benannten Ringspinnmaschine (2), wobei eine sich in zwei Schritten verjüngende Anordnung ("tapered arrangement") der Vorgarnspulen (S) in der benannten Ringspinnmaschine (2) verwendet wird; und worin eine der benannten Transportschienen (5a, 5b, 5c) dazu verwendet wird, die benannte, die benannten vollen Vorgarnspulen (F) tragende Wickeleinrichtung (9) zu halten, und die benannte synchrone Vorgarnanlegeoperation nur mit den benannten Vorgarnspulen (S) derjenigen der beiden anderen Wickeleinrichtungen (9) ausgeführt wird, die Vorgarnspulen (S) trägt, die von geringerem Umfang sind als die anderen.
  9. Einrichtung für eine synchrone Vorgarnanlegeoperation in einer Ringspinnmaschine, die versehen ist mit einer Mehrzahl von beidseitig von ihr aufgereihten Spindeln, mit einem Aufsteckgatterabschnitt (1), mit zwei Gruppen von Zugteilen (30), die aus je einer gleichen Zahl von abwechselnd entlang dieses gesamten Abschnitts angeordneten Zugteilen (30) bestehen, und zwar in Verbindung mit einem Transportsystem für Vorgarnspulen, das eine Mehrzahl von Vorgarnspulentransportschienen (5, 6, 5a, 5b, 5c) umfasst, die parallel an dem benannten Aufsteckgatterabschnitt (1) entlang einer ganzen Längenabmessung der benannten Ringspinnmaschine (2) verlegt sind, wobei jede der benannten Transportschienen (5, 6, 5a, 5b, 5c) in der Lage ist, zeitweise eine Wickeleinrichtung (9) zu halten, die eine Mehrzahl von Vorgarnspulen (S) trägt, von denen Vorgarnstränge (S1) zu entsprechenden Zugteilen (30) der benannten Ringspinnmaschine (2) geliefert werden, während andere der benannten Transportschienen (5, 6, 5a, 5b, 5c) in der Lage sind, zeitweise andere Wickeleinrichtungen (9) zu halten, die eine Mehrzahl von vollen Vorgarnspulen (F) tragen, die Anzahl der Vorgarnspulen (S) der benannten Wickeleinrichtungen (9) identisch ist, eine Mehrzahl von oberen Querträgern (38) entlang der benannten Anordnung der beiden benannten Gruppen von Zugteilen (30) angeordnet ist, und jeder der benannten oberen Querträger (38) zwei benachbarten Zugteilen (30) der benannten Anordnung der benannten Zugteile (30) entspricht, und worin zu dem Zeitpunkt, wo die benannten Vorgarnspulen (S), die von der benannten, von einer der benannten Transportschienen (5, 6, 5a, 5b, 5c) gehaltenen Wickeleinrichtung (9) getragen werden, fast entleert worden sind, die benannten Vorgarnstränge (S1), die von den benannten, fast entleerten Vorgarnspulen (S) zugeführt werden, an entsprechende Vorgarnstränge (S2) angelegt werden, die von den jeweiligen vollen Vorgarnspulen genommen werden, gekennzeichnet durch
    einen zusätzlichen Vorgarneinzugzylinder (40), der an einer Stelle vor der entlang der benannten Reihe von Spindeln befindlichen Reihe der benannten Zugteile (30) sitzt, von denen jedes einen Trichter (39) hat;
    Organe (41), um den benannten zusätzlichen Vorgarneinzugzylinder (40) zeitweise zu drehen bzw. anzuhalten;
    eine Mehrzahl von Greifzylinderpaaren (44a, 44b), die dreh- und verschiebbar an entsprechenden Stellen gegenüber den entsprechenden Zugteilen (30) so angeordnet sind, dass jeder Vorgarnstrang (S1), der einem entsprechenden Zugteil (30) zugeführt wird, durch einen Freiraum zwischen jeweils zwei der benannten Greifzylinder (44a, 44b) eines entsprechenden Zugteils (30) hindurchläuft;
    Organe (43, 44, 45), um jedes Greifzylinderpaar (44a, 44b) zu halten;
    wobei jedes der Halteorgane (43, 44, 45) an dem entsprechenden benannten Zugteil angeordnet ist, wenn die benannten Greifzylinder (44a, 44b) wahlweise gegen den benannten zusätzlichen Vorgarneinzugzylinder (40) gedrückt werden und wenn umgekehrt der benannte Kontakt der benannten Greifzylinder (44a, 44b) mit dem benannten zusätzlichen Vorgarneinzugzylinder (40) aufgehoben wird;
    Organe (51; 51A, 51B; 61, 62; 71), um die jeweiligen Laufstellungen der benannten, den entsprechenden Zugteilen (30) zugeführten Vorgarnstränge (S1) und der benannten, von den entsprechenden vollen Vorgarnspulen (F) genommenen Vorgarnstränge (S2) bei jedem der benannten Zugteile (30) zu steuern, wobei die benannten Steuerorgane (51; 51A, 51B; 61, 62; 71) an einer Stelle vor dem benannten zusätzlichen Vorgarneinzugzylinder (40) und parallel dazu angeordnet sind; und
    Organe (52, 52a; 63, 64; 72, 73, 74), um die benannten Steuerorgane entlang der benannten Reihe von Spindeln wechselweise zu verschieben.
  10. Vorrichtung gemäss Anspruch 9, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin die benannten Zugteile (30) mit einem gemeinsamen Hinterzylinder (34) versehen sind und der benannte zusätzliche Vorgarneinzugzylinder (40) mit dem benannten Hinterzylinder (34) in Berührung gebracht wird durch das benannte Organ zur zeitweisen Drehung und Arretierung, das eine Kupplung (42) und eine Bremse (42a) umfasst.
  11. Vorrichtung gemäss Anspruch 9, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin ein Hebel (43) auf jeden der benannten oberen Querträger (38) montiert ist und nach oben und unten geschwenkt werden kann, eine Tragwelle (44) an einem freien Endabschnitt des benannten Hebels (43) angeordnet ist und über die beiden Aussenseiten des benannten Hebels (43) hinausragt, und die benannten Greifzylinder (44a, 44b) beidseitig davon drehbar auf der benannten Tragwelle (44) angebracht sind.
  12. Vorrichtung gemäss Anspruch 9, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin die benannten Steuerorgane einen Stab (51), der sich über die gesamte Länge der benannten Ringspinnmasche erstreckt, sowie Organe (52, 52a) umfassen, um den benannten Stab (51) wechselweise über eine vorbestimmte Strecke in seiner Längsrichtung zu verschieben, wobei der benannte Stab (51) mit einer Mehrzahl von Sätzen von jeweils drei Führungsstiften (51b, 51c, 51d) versehen ist, die an entsprechenden, den betreffenden Zugteilen (30) gegenüberliegenden Stellen in ihn eingesetzt sind, und die benannten Stellen der benannten drei Stifte (51b, 51c, 51d) jedes Satzes von Stiften so gelegen sind, dass zwei Zwischenräume zur getrennten Führung der einzelnen Vorgarnstränge (S1, S2) zwischen jeweils zwei benachbarten Stiften der benannten Sätze von Stiften (51b, 51c, 51d) gebildet werden, und wenn einer der benannten Zwischenräume einem der beiden benannten Greifzylinder (44a, 44b) mit Bezug auf ein entsprechendes Zugteil (30) gegenüberliegt, dann liegt der andere der benannten Zwischenräume einem Punkte zwischen den beiden benannten Greifzylindern (44a, 44b) gegenüber.
  13. Vorrichtung gemäss Anspruch 9, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin die benannten Steuerorgane ein Paar von Stäben (61, 62), die sich längs dieser Maschine erstrecken, sowie Organe (63, 64) umfassen, um die benannten Stäbe (61, 62) wechselweise über eine bestimmte Strecke in ihrer Längsrichtung zu verschieben, wobei einer der benannten Stäbe (61, 62) mit einer Mehrzahl von Sätzen von jeweils drei Führungsstiften (61b, 61c, 61d) versehen ist, die an entsprechenden, den betreffenden Zugteilen der einen Gruppe von Zugteilen aus den beiden Gruppen von Zugteilen (30) gegenüberliegenden Stellen in ihn eingesetzt sind, während der andere der benannten Stäbe (61, 62) mit einer Mehrzahl von Sätzen von jeweils drei Führungsstiften (62b, 62c, 62d) versehen ist, die an entsprechenden, den betreffenden Zugteilen der anderen Gruppe von Zugteilen aus den beiden Gruppen von Zugteilen (30) gegenüberliegenden Stellen in ihn eingesetzt sind und die Stellen, an denen die benannten drei Stifte (61b, 61c, 61d; 62b, 62c, 62d) jedes Satzes von Stiften in jeden der benannten Stäbe (61, 62) eingesetzt sind, so gelegen sind, dass zwei Zwischenräume zur getrennten Führung der einzelnen Vorgarnstränge (S1, S2) zwischen jeweils zwei benachbarten Stiften des benannten Satzes von Stiften (61b, 61c, 61d; 62b, 62c, 62d) gebildet werden, und wenn einer der benannten Zwischenräume einem der beiden Greifzylinder (44a, 44b) mit Bezug auf ein entsprechendes Zugteil (30) gegenüberliegt, dann liegt der andere der benannten Zwischenräume einem Punkte zwischen den beiden benannten Greifzylindern (44a, 44b) gegenüber.
  14. Vorrichtung gemäss Anspruch 9, um synchron Vorgarn in einer Ringspinnmaschine anzulegen,
       worin die benannten Steuerorgane eine Übertragungswelle (71), die an einer Stelle vor der benannten Reihe der benannten Zugteile (30) und parallel dazu angeordnet ist, sowie Organe (52, 52a, 72, 73, 74) umfassen, um die benannte übertragungswelle (71) um ihre Achse zu drehen, während sie wechselweise über eine vorbestimmte Strecke in ihrer Längsrichtung verschoben wird, wobei die benannte Übertragungswelle (71) mit zwei Gruppen von Vorgarn-Nutenbahnen (75a, 75b) versehen ist, die auf ihr so ausgebildet sind, dass der Phasenwinkel zwischen der benannten Vorgarn-Nutenbahn einer der benannten Gruppen und der benannten Vorgarn-Nutenbahn der anderen der benannten Gruppen 180° beträgt, die benannten Vorgarn-Nutenbahnen (75a, 75b) der einen der beiden benannten Gruppen entsprechenden Zugteilen einer der benannten Gruppen von Zugteilen (30) gegenüberliegen und die benannten Vorgarn-Nutenbahnen (75a, 75b) der anderen der benannten beiden Gruppen entsprechenden Zugteilen der anderen Gruppe der benannten Zugteile (30) gegenüberliegen, wobei, wenn die eine der beiden benannten Gruppen von Vorgarn-Nutenbahnen (75a, 75b) den entsprechenden Zugteilen einer der beiden benannten Gruppen der benannten Zugteile (30) gegenüberliegt, die benannten Nutenbahnen (75a, 75b) der anderen der benannten beiden Gruppen einem Zwischenraum gegenüberliegen, der zwischen dem benannten Paar der benannten Greifzylinder (44a, 44b) gebildet wird, die den entsprechenden Zugteilen der anderen der beiden benannten Gruppen von Zugteilen (30) gegenüberstehen.
EP19910810184 1990-03-22 1991-03-20 Verfahren und Vorrichtung zum synchronen Verbinden von Vorgarnen für eine kontinuierliche Zuführung dieser zu einer Ringspinnmaschine Expired - Lifetime EP0448518B1 (de)

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EP0196127B1 (de) * 1985-03-27 1989-06-07 S. BIGAGLI & C. SpA Verfahren und Vorrichtung zum Wechseln von Faserbandwickeln mit automatischer Faserbandanknüpfung an Spinnmaschinen für kardierte Wolle
DE3681233D1 (de) * 1985-09-04 1991-10-10 Howa Machinery Ltd Verfahren und vorrichtung zum verbinden von vorgarn in spinnmaschinen.
IT1218670B (it) * 1987-08-10 1990-04-19 Gaudino Di P Gaudino E C Sas O Dispositivo per il cambio automatico delle cannelle in un filatoio per fibre tessili
DE3734264A1 (de) * 1987-10-09 1989-04-20 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zum automatischen wechseln von vorgarnspulen an einer ringspinnmaschine

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JP2784078B2 (ja) 1998-08-06
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EP0448518A3 (en) 1991-12-04
EP0448518A2 (de) 1991-09-25
DE69119635D1 (de) 1996-06-27

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