EP0303577B1 - Automatisch arbeitende Einrichtung zum Auswechseln von Vorgarnspulen in einer Spinnmaschine für Textilfasern - Google Patents

Automatisch arbeitende Einrichtung zum Auswechseln von Vorgarnspulen in einer Spinnmaschine für Textilfasern Download PDF

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Publication number
EP0303577B1
EP0303577B1 EP88830333A EP88830333A EP0303577B1 EP 0303577 B1 EP0303577 B1 EP 0303577B1 EP 88830333 A EP88830333 A EP 88830333A EP 88830333 A EP88830333 A EP 88830333A EP 0303577 B1 EP0303577 B1 EP 0303577B1
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EP
European Patent Office
Prior art keywords
rove
roves
spinning
cylinder
supplied
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Expired
Application number
EP88830333A
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English (en)
French (fr)
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EP0303577A1 (de
Inventor
Piero Gaudino
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Officine Gaudino Di P Gaudino & C Sas
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Officine Gaudino Di P Gaudino & C Sas
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/005—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving
    • 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 present invention relates to spinning machines for spinning textile fibres of any type, particularly for spinning carded fibres, in which the spinning machine is supplied with one or more roves, and in which a plurality of roves wound in the form of so-called "rolls" is supplied to spinning devices adapted to subject the roves to drawing and twisting.
  • variable numbers of rolls are generally wound onto supporting rods and, together with the latter, form the so-called "cylinder".
  • each rove, coming from its respective roll, is supplied from the cylinder to the drawing and twisting device along a corresponding spinning line and is then wound onto the respective spindle situated at the end of the spinning line.
  • the spinning machines normally include several spinning sections, each of which includes a feed cylinder, the cylinder-changing operation generally involves a fairly long stoppage of the spinning machine.
  • This patent describes means for positioning the full cylinder in its parking position and means for holding the ends of the roves supplied by the full cylinder in predetermined positions, the ends being brought into positions adjacent the roves of the respective spinning lines at the end of the changeover.
  • the object of the present invention is to produce a spinning machine in which the above operations for the joining of the corresponding roves to the respective spinning lines and their detachment therefrom are carried out automatically, that is, without the direct intervention of the operator.
  • the technical problem which must be addressed and resolved is not only that of achieving the mechanical joining of a single rove to the respective spinning line and its detachment therefrom, but the more complex problem of achieving the substantially simultaneous joining of all the roves of the full cylinder and the substantially simultaneous detachment of all the roves of the used cylinder.
  • the subject of the invention is a device for automatically achieving, in a spinning machine for spinning textile fibres of any type, particularly for spinning carded fibres, in which the spinning machine is supplied by one or more roves, the detachment from the respective spinning lines of the roves supplied by the used cylinder arranged on the spinning machine in an operative supply position and rotated for unwinding by a mechanism which is driven by a motor unit, and the corresponding joining of the roves supplied by a full cylinder arranged on the spinning machine in an initial parking position and intended to replace the used cylinder in the operative supply position, the device comprising means for holding the ends of the roves supplied by the full cylinder in a predetermined position and means for the bringing together and joining of the end of each rove of the full cylinder and the rove of the respective spinning line, characterised in that the means for the bringing together and joining of the end of each rove of the full cylinder and the rove
  • a machine for spinning carded wool is indicated 1 and comprises a fixed base frame 2 housing within it the motor unit which operates the spinning machine.
  • the cylinder 4 is guided and held in position by slots 3a which cooperate with end pins of the cylinder 4.
  • the rove 4a of each roll of the cylinder 4 is fed along a spinning line 5 to a corresponding drawing and twisting unit 6 and is subsequently wound onto a corresponding spindle 7 situated at the end of the respective spinning line 5.
  • a transporter unit 8 is situated on the upper part of the spinning machine 1 and includes a linear conveyor 9.
  • Two vertical support shafts supported by the conveyor 9 are indicated 10 and have hook-shaped appendages 10a at their lower ends.
  • a full cylinder 11 is suspended from the support shafts 10.
  • This cylinder 11 comprises a rod 12 onto which a plurality of rolls 13 are wound for connection to the spinning line 5.
  • the rod 12 has a pin 14 which is coupled with the hook-shaped end 10a of the shaft 10 carried by the conveyor 9.
  • Two rigid arms, indicated 15, which are side by side, are keyed to a shaft 16 carried rotatably by the fixed structure of the transporter device 8 and rotated by known means, for example, hydraulic jacks or the like, not illustrated.
  • Each arm 15 is provided with an inclined and bent guide plate which forms a supporting seat 17 for engaging the end pins 14 of the rod 12 of the full cylinder 11.
  • the supporting seat 17 is V-shaped in cross-section and includes a first section 17a and a second section 17b which is inclined to the first.
  • Each arm 15 also has a bent terminal part 18 on the end of which a plate 19 is situated.
  • a support structure, indicated 20, is provided with two arms 20a fixed firmly to a shaft 21 carried rotatably by the rigid frame of the device 8 and also rotated by known means, not illustrated.
  • the arms 20a are connected by a cross bar 22 on which clamps 23 are fixed.
  • Each clamp 23 carries a gripper 24 on its front face.
  • the gripper 24 comprises an articulated jaw 25 supported by the respective clamp 23 for rotation about an articulation axis 26.
  • the articulated jaw 25 is provided with two engagement faces 27 and 28 which cooperate with two corresponding fixed seats 29 and 30 of a magnetic plate 31.
  • the articulated jaw 25 has an end appendage 32 formed in a position adjacent the engagement face 27.
  • Each clamp 23 has a thread guide 33 in a position opposite the jaw 25 and constituted by a bent and shaped plate provided with a notch which has an initial V-shaped entry section 34.
  • a C-shaped plate, indicated 35, holds a rubber block 36 tightly against the respective clamp 23.
  • the spinning machine 1 also has an elongate bar 37 which is T-shaped in section and whose upper face is covered by a rubber strip 38 forming a flat support or base.
  • the bar 37 can slide longitudinally in both directions and its translational movement is effected by a tie-rod 39a driven by an actuator 39.
  • the bar 37 also has pins 37a on its front face, each of which cooperates with the end appendage 32 of a respective articulated jaw 25.
  • the rove of each roll 13 of the full cylinder is indicated 40 and the end of the rove 40 is indicated 41.
  • the end section of the rove 40 near the end 41 is indicated 42.
  • the roller 3 is driven by a shaft 43 by means of a drive and reversing unit 44 which receives drive from a motor unit 45.
  • the drive and reversing unit 44 has a gear 46 which is rotated in the sense corresponding to the unwinding of the cylinder 4 which supplies the roves of the spinning line 5.
  • the unit 44 also includes a second gear 47 which receives drive from a gear 49 by means of a chain 48. The gear 47 is rotated in the opposite sense to the gear 46.
  • a flange 50 provided with frontal dog clutches 51 and 52 is interposed between the gear 46 and the gear 47.
  • the flange 50 can be displaced parallel to itself by an operating fork 53.
  • the flange 50 can thus be brought into engagement with the gear 46 by means of the clutch 51 or with the gear 47 by means of the clutch 52, so that it can be rotated in one sense of rotation or the other.
  • the flange 50 is coupled torsionally to the shaft 43 and transmits the rotary drive thereto.
  • the device operates as follows.
  • the cylinder 4 is in its operative supply position in which the roves coming from its rolls supply the corresponding spinning lines 5. Whilst the spinning machine is operating, the conveyor, with its two shafts 10, supplies a full cylinder 11 and places it in a position above the cylinder 4 which is being unwound.
  • the spinning machine 1 generally includes several spinning sections, each of which is provided with a cylinder 4 whose rolls supply respective spinning lines 5 to respective drawing unit 6 spindles 7 through corresponding drawing units: in this case, the conveyor 9 supplies a full cylinder 11 in correspondence with each cylinder 4.
  • the rigid arms 15 of each section of the spinning machine are raised until the first section 17a of the inclined support seat 17 is brought into engagement with the relative end pin 14 carried by the rod 12 of the respective cylinder 11.
  • the pins 14 of the cylinder 11 are thus raised so that they are disengaged from the hooked ends 10a of the vertical shafts 10 of the conveyor 9.
  • the pins 14 then slide along the section 17a and are positioned in correspondence with the junction between the sections 17a and 17b of the seat 17 (as shown in broken outline in Figure 13).
  • the cylinder 11 can subsequently be lowered by the rigid arms 15 into a parking position, shown in Figure 3, without interfering with the hooks 10a.
  • the operator takes the rove 40 of each roll 13 of the full cylinder 11, passes it through the thread guide 33 carried by the respective clamp 23, and clamps its end 41 by means of the corresponding articulated jaw 25.
  • the jaw 25 clamps the end 41 of the corresponding rove 40 between its engagement face 27 and the corresponding fixed seat 29 of the respective magnetic plate 31.
  • the end section 42 of the rove 40 is thus arranged in a predetermined position fixed by the guiding action of the thread guide 33 in combination with the clamping action of the jaw 25.
  • This operation is repeated for the rove 40 of each roll 13. At the end of this operation, therefore, all the ends 41 of the roves from the rolls 13 of the full cylinder 11 are clamped by respective corresponding jaws 25.
  • each cylinder 4 which is being unwound is almost finished and each cylinder 4 is therefore used up, the operator intervenes by stopping the spinning machine.
  • the support structure 20 which carries the grippers 24 with the respective jaws 25 is lowered by the action of drive means until the grippers have moved down onto the elongate bar 37.
  • each of the various thread guides 33 engages the rove of the corresponding spinning line 5.
  • the action of the thread guide 33 causes the rove of the corresponding spinning line 5 to be bent so that it lies on the rubber strip 38 carried by the elongate bar 37.
  • All the roves 4a of all the spinning lines thus lie on the strip 38 in positions beside the corresponding end sections 42 of the respective roves 40 from the full cylinder.
  • the end section 42 of each rove 40 of the full cylinder is urged by the rubber block 36 against the corresponding rove of the respective spinning line 5 and is clamped to the strip 38 together therewith.
  • the roller 3 is rotated in the opposite sense, that is, clockwise with reference to Figure 1, by the operation of the reversing device of the drive unit 44 to cause the detachment of the rove 4a of each roll of the used cylinder 4 from the spinning line 5.
  • the rigid arms 15 are lowered further and their respective end plates 19 come into contact with the end pins of the rod of the used cylinder 4 to cause its ejection.
  • the rod 12 of the used cylinder falls into a rear transporter and is conveyed by the latter to a suitable container.
  • the end pins 14 of the full cylinder 11 come into contact with the guide slots 3a, causing the pins to be disengaged from the corresponding rigid arms 15.
  • the cylinder 11 moves down into contact with the roller 3, guided by the slots 3a.
  • the operator operates the actuator 39 to cause the translation of the bar 37 towards the left in Figure 8.
  • the pins 37a carried by the bar 37 engage the corresponding appendages 32 of the respective articulated jaws 25, thus causing the relative grippers 24 to open.
  • Each gripper 24 brings its engagement face 28 into contact with the corresponding fixed seat 30 of the respective magnetic plate 31 and is thus held in the open position.
  • the longitudinal displacement of the bar 37 simultaneously causes the roves 42 and 5 which are beside each other to be twisted around each other, as illustrated in Figure 11.
  • the rigid arms 15 and the structure 20 which carries the grippers 24 are raised into their respective starting positions (Fig. 13).
  • the spinning lines 5, which unwind from the full cylinder now positioned in the supply position in place of the used cylinder 4, are now reset by the restarting of the spinning machine 1.

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

Claims (12)

1. Vorrichtung, um in einer Spinnmaschine zum Spinnen von Textilfasern jeder Sorte, insbesondere zu Spinnen von kardierten Fasern, wobei die Spinnmaschine mit einer oder mehreren Stränen versorgt wird, das Lösen der Stränen, die von dem verbrauchten Zylinder zugeführt werden, der auf der Spinnmaschine in einer Betriebszuführstellung angeordnet ist und zum Abwickeln von einem Mechanismus gedreht wird, der von einer Motoreinheit angetrieben wird, von den jeweiligen Spinnlinien und das entsprechende Verbinden der Stränen, die von einem vollen Zylinder zugeführt werden, der auf der Spinnmaschine in einer anfänglichen Parkposition angeordnet ist und vorgesehen ist, den verbrauchten Zylinder in der Betriebszuführstellung zu ersetzen, automatisch zu erreichen, wobei die Vorrichtung Einrichtungen zum Halten der Enden der Stränen, die von dem vollen Zylinder bereitgestellt werden, in einer vorgegebenen Stellung und Einrichtungen zur Zusammenbringen und Verbinden der Enden jeder der Stränen des vollen Zylinders und der Sträne der entsprechenden Spinnlinien umfaßt, dadurch gekennzeichnet, daß die Einrichtungen für das Zusammenbringen und Verbindung des Endes (41) jeder Sträne (40) des vollen Zylinders (11) und der Sträne der jeweiligen Spinnlinie (5) umfaßt:
― eine flache Stütze (37, 38), auf die die Stränen der Spinnlinien (5) im Moment des Zusammenbringens gelegt werden;
― Einrichtungen, um das Ende (41) jeder Sträne (40) des vollen Zylinders (11) in eine Position neben die und in Kontakt mit der Sträne der jeweiligen Spinnlinie (5) auf der flachen Stütze (37, 38) zu bringen;
― Klemmeinrichtungen (20, 36) zum Klemmen des Endes (41) jeder Sträne (40) des vollen Zylinders (11) gegen die Sträne der jeweiligen Spinnlinie (5) unter Druck gegen die flache Stütze (37, 38);
― Einrichtungen, um ― oberhalb der Verbindungszone ― das Lösen der Stränen (4a), die von dem verbrauchten Zylinder (4) bereitgestellt werden, von den jeweiligen Spinnlinien (5) zu bewirken, und
― Einrichtungen (39), um eine relative Gleitbewegung zwischen der flachen Stütze (37, 38) und den Klemmeinrichtungen (20, 36) in eine Richtung quer zu den Stränen (5, 40), die nebeneinander liegen, zu bewirken, um zu verursachen, daß das Ende (41) jeder Sträne (40) des vollen Zylinders (11) um die Sträne der jeweiligen Spinnlinie (s) gewickelt wird und daher mit dieser verbunden wird.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtungen zum Klemmen des Endes (41) jeder Sträne (40) des vollen Zylinders (11) gegen die Sträne der jeweiligen Spinnlinie (5) unter Druck auf die flache Stütze (37, 38) wenigstens einen gegenstehenden Block (36) umfassen, der gegen die flache Stütze (37, 38) gedruckt wird, um darauf das Ende jeder Sträne der jeweiligen Spinnlinie (5) zu klemmen.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die flache Stütze (37, 38) aus einer einzigen, länglichen, flachen Stützbasis (37, 38) besteht, auf die alle Stränen der Spinnlinien (5), die von dem verbrauchten Zylinder (4) bereitgestellt werden, während des Verbindens angeordnet werden.
4. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Einrichtungen (39) zum Bewirken einer relativen Gleitbewegung quer zu den übereinander angeordneten Stränen (5, 40) einen bidirektionalen Bewegungsmechanismus (39a) umfassen, der in die flache Stützbasis (37, 38) greift und bewirkt, daß sie parallel zu sich selbst in eine Richtung gleitet, um das Verbinden der Stränen (5, 40) zu erreichen und dann ― wenn das Verbinden stattgefunden hat und nach dem Loslassen der Klemmeinrichtungen ― in die entgegengesetzte Richtung gleitet, um die Basis (37, 38) in ihre Anfangsposition zu bringen.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß jeder Gegenblock (36) und die zusammenwirkende, flache Basis (37, 38) sich gegenüberstehende Oberflächen mit einem hohen Gleitreibungskoeffizienten besitzen.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die gegenüberstehenden Oberflächen jedes Gegenblocks (36) und der zusammenwirkenden, flachen Basis (37) mit einem elastomeren Material (38) bedeckt sind.
7. Vorrichtung nach einem der vorhergenden Ansprüche 1 bis 6, bei der die Einrichtungen zum Halten der Enden der Stränen, die von dem vollen Zylinder zugeführt werden, in einer vorgegebenen Position eine Mehrzahl von mechanischen Greifern umfaßt, die Seite an Seite auf einer Trägerstruktur angeordnet sind, dadurch gekennzeichnet, daß jeder Greifer (24) mit einer jeweiligen Fadenführung (33), die ebenfalls von der Trägerstruktur (20) oberhalb des Greifers (24) gehalten wird, zum Halten des Endbereichs (42) der entsprechenden Sträne (40) versehen ist, welche von dem vollen Zylinder (11) quer in einer gegebenen Anordnung bereit gestellt wird, wobei die Trägerstruktur (20) mit Einrichtungen versehen ist, die sie ― im Moment des Verbindens ― erniedrigen, bis der Endbereich (42) jeder Sträne (40) des vollen Zylinders (11) in Kontakt mit der Sträne der jeweiligen Spinnlinie (5) entsprechend der Stützbasis oder -ebene (37, 38) gebracht ist, wobei die Fadenführung (33) jedes Greifers (24) die Sträne der jeweiligen Spinnlinie (5) im letzten Abschnitt ihrer Abwärtsbewegung faßt und letztere auf die benachbarte Stützbasis oder -ebene (37, 38) bringt, um die Stränen (5, 40), die verbunden werden sollen, in Positionen nebeneinander auszurichten.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß ein Gegenblock (36), der ebenfalls von der Trägerstruktur (20) getragen wird, zwischen jedem der Greifer (24) und der jeweiligen Fadenführung (33) angeordnet ist.
9. Vorrichtung nach Anspruch 7 oder Anspruch 8, dadurch gekennzeichnet, daß jeder mechanischer Greifer (24) aus einer Gelenkeinspannbacke (25) besteht, die mit einer magnetischen Platte (31) mittels zweier verschiedener Greifflächen (27, 28) zusammenarbeitet, die der Einspannbacke (25) ermöglichen jeweils in einer geschlossenen Stellung, in der das Ende (41) der jeweiligen Sträne (40) des vollen Zylinders (11) von der Einspannbacke (25, 27) gegen einen festen Sitz (29) der magnetischen Platte (31) gegriffen wird, und in einer geöffneten Stellung gehalten zu werden, die durch das Einrasten der Einspannbacke (25, 28) in einen anderen, engen Sitz (30) der Platte (31) definiert wird, in der das Ende losgelassen wird, wobei Einrichtungen vorgesehen sind, um den Greifer (24) zu öffnen und zu bewirken, daß sich die Einspannbacke (25) von ihrer geschlossenen Stellung zu ihrer geöffneten Stellung bewegt, wenn die Stränen (5, 40), die von dem vollen Zylinder (11) bereitgestellt werden, und diejenigen der entsprechenden Spinnlinien (5) in einer Stellung nebeneinander ausgerichtet sind.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Einrichtungen zum Öffnen der Greifer (24) aus einer Mehrzahl von Stiften (37a) bestehen, die fest auf der Stützbasis oder -ebene (37, 38) befestigt sind und jeweils mit einem jeweiligen Greifer (24) zusammenwirken, wobei jeder Stift (37a) ― durch die relative Gleitbewegung zwischen der Stützbasis oder -ebene (37, 38) und den entsprechenden Gegenblöcken (36) ― in eine Verbindung mit der Gelenkklemmbacke (25) des jeweiligen Greifers (24) gebracht wird, um dessen Bewegung von der geschlossenen Stellung in die geöffnete Stellung zu bewirken.
11. Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Einrichtungen zum Bewirken des Lösens der Stränen (4a), die von dem verbrauchten Zylinder (4) bereit gestellt werden, von den Spinnlinien (5) ― oberhalb des Verbindungsbereichs ― eine Umkehrvorrichtung (44) umfaßt, die auf den Mechanismus wirkt, der die Drehung der verbrauchten Zylinder (4) verursacht, und die geeignet ist, zu bewirken, daß sich letzterer in seiner Aufwickelrichtung dreht, wobei dieses Aufwickeln das Zerreißen der von dem verbrauchten Zylinder (4) bereitgestellten Stränen (4a) bewirkt.
12. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Mechanismus, der die Drehung des verbrauchten Zylinders (4) bewirkt, (in bekannter Weise) aus einer Rolle (3) besteht, auf der der verbrauchte Zylinder gelagert ist, so daß er in Drehung versetzt wird, wobei die Umkehrvorrichtung (44) zwischen der Rolle (3) und dem jeweiligen Betriebsmotor (45) angeordnet ist.
EP88830333A 1987-08-10 1988-08-02 Automatisch arbeitende Einrichtung zum Auswechseln von Vorgarnspulen in einer Spinnmaschine für Textilfasern Expired EP0303577B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT67703/87A IT1218670B (it) 1987-08-10 1987-08-10 Dispositivo per il cambio automatico delle cannelle in un filatoio per fibre tessili
IT6770387 1987-08-10

Publications (2)

Publication Number Publication Date
EP0303577A1 EP0303577A1 (de) 1989-02-15
EP0303577B1 true EP0303577B1 (de) 1991-12-27

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EP88830333A Expired EP0303577B1 (de) 1987-08-10 1988-08-02 Automatisch arbeitende Einrichtung zum Auswechseln von Vorgarnspulen in einer Spinnmaschine für Textilfasern

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EP (1) EP0303577B1 (de)
DE (1) DE3867173D1 (de)
ES (1) ES2028364T3 (de)
IT (1) IT1218670B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2784078B2 (ja) * 1990-03-22 1998-08-06 豊和工業株式会社 精紡機における一斉篠継方法と装置
US5343689A (en) * 1990-03-22 1994-09-06 Howa Machinery, Ltd. Method and apparatus for synchronously piecing roving for a continuous feeding thereof to a ring spinning frame
JP2796420B2 (ja) * 1990-10-18 1998-09-10 豊和工業株式会社 紡機の自動スライバー継ぎ方法
DE4040531A1 (de) * 1990-12-18 1992-07-02 Rieter Ag Maschf Luntenwechselvorrichtung
BE1007310A3 (fr) * 1993-07-07 1995-05-16 Houget Duesberg Bosson Procede et dispositif pour rattacher deux fils dans un continu a filer.
ITUB20155494A1 (it) * 2015-11-11 2017-05-11 Gbs Srl 59100 Prato / It Dispositivo automatico per la alimentazione dei subbi di stoppino in una filanda

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH383228A (de) * 1960-12-07 1964-10-15 Rieter Ag Maschf Selbsttätige Bandeinzugsvorrichtung
ATE43865T1 (de) * 1985-03-27 1989-06-15 Bigagli Fond Off Verfahren und vorrichtung zum wechseln von faserbandwickeln mit automatischer faserbandanknuepfung an spinnmaschinen fuer kardierte wolle.
EP0213962B1 (de) * 1985-09-04 1991-09-04 Howa Machinery Limited Verfahren und Vorrichtung zum Verbinden von Vorgarn in Spinnmaschinen

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DE3867173D1 (de) 1992-02-06
IT1218670B (it) 1990-04-19
EP0303577A1 (de) 1989-02-15
IT8767703A0 (it) 1987-08-10
ES2028364T3 (es) 1992-07-01

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