EP0616060A1 - Vorrichtung zum Strecken, durch Falschzwirnen, Textil-Faserstrangen für Spinnen bestimmt - Google Patents

Vorrichtung zum Strecken, durch Falschzwirnen, Textil-Faserstrangen für Spinnen bestimmt Download PDF

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Publication number
EP0616060A1
EP0616060A1 EP94830115A EP94830115A EP0616060A1 EP 0616060 A1 EP0616060 A1 EP 0616060A1 EP 94830115 A EP94830115 A EP 94830115A EP 94830115 A EP94830115 A EP 94830115A EP 0616060 A1 EP0616060 A1 EP 0616060A1
Authority
EP
European Patent Office
Prior art keywords
rotor
roller
track
appendage
small cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94830115A
Other languages
English (en)
French (fr)
Inventor
Ida Petracchi
Iolanda Bonacchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0616060A1 publication Critical patent/EP0616060A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles

Definitions

  • the invention relates to a device for drawing and simultaneous provisional torsion (false torsion) for the production of yarns especially of carded type.
  • This device comprises: an inner circular track secured to a first rotor which rotates in a support whose axis coincides with that of the track; at least one roller - like a small cylinder - rotating on itself by taking place on said inner track being supported by a second rotor coaxial with the first rotor; a passage for the wire in formation.
  • the wicking material for the formation of the wire is engaged between the roller and the inner track, which in the operation of the device impose on the wire in formation a progression (and therefore a stretching) and a twist.
  • the device provides a bias and an elastic drive of this roller or small cylinder against the circular track - in accordance with a centrifugal action - to obtain an adequate pinching pressure of the material between the roller and the inner circular track.
  • the device is perfected to ensure the desired operation, to simplify the production of the device itself, to obtain an effective guide of the material which must reach the nip between the track and the roller, to avoid the consequences of the arrival irregularities in the material, to avoid the risk of the material rolling up on the roller and to obtain other aims and advantages developed in the following text.
  • the first rotor is integral with a profiled appendage so as to partially surround the roller and to guide the wire in formation thus constituting the wire guide housing.
  • the outer surface of this appendage can be provided with at least one roughly helical groove acting as a wire guide.
  • the profiled appendage can be symmetrical and can have two symmetrical grooves acting as a wire guide. This profiled appendage can be externally in an approximately osculating position with the outlet orifice of the hole passing through the first rotor.
  • the elastic component can be an elastic thickness of rubber or equivalent material. This component will be easily removable with the indoor track.
  • a crown 3 on which are mounted ball bearings 5 allowing the rotation of a body 7; a component 7A fixed on the body 7 laterally has the shape of a pulley, as a transmission member for the rotation of said body 7, for example by means of a toothed belt 9 or other preferably positive transmission system.
  • the body 7 carries ball bearings 10 which allow rotation independently and coaxially to the body 7 of a second annular rotor 12, also actuated by toothed belt 13 or equivalent system.
  • An inner circular track 14A is formed in a ring 14, which is mounted on the rotor 12 by means of a ring 16 of high elastic deformation, of rubber or similar material.
  • the track 14 A and the ring 16 can be installed in the lower part of the rotor 12 as shown on the left of FIG. 1, or be housed in the crown 12A fixed on said rotor 12 as shown on the right of FIG. 1 .
  • a roller or small cylinder 20 freely rotating on the pivot 18.
  • the roller 20 is in contact with the inner surface 14A of the crown 14. The contact can occur with a certain pressure and therefore with a certain interference, to allow the pinching of the spinning wick indicated by M, introduced between the track 14A and the roller 20.
  • the elastic reactions of the ring 16 allow correct contact between the inner surface 14A of the crown 14 and the outer surface of the roller 20; the track and the roller may both have a cylindrical development or else also a modified and therefore different profile of revolution compared to the cylindrical conformation.
  • the body 7 is traversed by a hole 22 which may have a conical or flared upper mouth 22A to facilitate the threading of the material M delivered by a supply system controlled by cylinders C, for example.
  • the body 7; 7A constituting the first rotor, rotates at a speed different from that of the second rotor 12, always around a common axis; the rotor 12 drives in integral rotation the track 14A which can find its correct position due to the thickness and the elasticity of the ring 16, as indicated above.
  • the roller 20 due to the difference in speeds of the two rotors 7, 7A and respectively 12, obviously turns on itself by taking place on the track 14A as a function of the speed difference between the two rotors.
  • the material M passes through the hole 22, 22A, arrives at the lower outlet of the hole 22 where it is deflected towards the roller 20 to be introduced and pinched in the contact line of the roller 20 and the track 14A; therefore, the material undergoes upstream of the point of contact between the track 14A and the roller 20 an axial traction effect therefore of stretching according to the arrow FS and also a torsion effect propagating from the device up to wick feed system shown in C in Figure 1.
  • the body 7 has a profiled appendage 107 which develops like a wire guide housing at the same time cleaner, to partially surround the roller 20 of a reduced and relatively reduced thickness; on the outside, this appendage 107 forms a surface substantially tangent to the terminal edge of the hole 22.
  • wire guide of appendix 107 there is provided on its outer surface a roughly helical groove 109 which begins in the end part of the hole 22 to the final lateral edge of the appendix, this to bring the wire to the surface of the roller 20 near the osculating contact area between the track 14A and the roller 20 itself.
  • the wire guide is designed to accompany it in a projection around and at a limited distance from the roller 20 and to limit the free trajectory of the material between the channel 109 and the contact zone between the track 14A and the roller 20.
  • the groove or grooves 109 are inclined so as to allow the wire to reach a pinching point which is more or less high along the contact line, preferably as high as possible.
  • the housing 107 is also able to clean the surface of the roller 20 when a cleaning product is inserted on the interior surface of the housing.
  • the appendix 107 which forms the wire guide casing partially surrounding the surface of the roller 20, is produced in one piece with the body 7.
  • This element has a discoid flange 301 for application to the body 207 and forms an appendage 307 similar to that 7 to form a wire guide housing with similar function.
  • FIG. 5 is also shown, in a limited manner, a different mounting solution for the rotors with ball bearings, which have been developed as shown in 205 and 210 as double raceways for the two crowns of balls respective.
  • the mounting of the roller 220 is also slightly modified compared to the solution of FIGS. 1 to 4, but with perfectly equivalent function.
  • roller 20 or 220 is rigidly mounted with a fixed center distance relative to the main axis of the device and of the rotors 7 and 12 and in particular of the rotor 7, on which it is mounted, with screw fixing or expansion system to allow easy assembly and disassembly.
  • the circular track 14 or 214 is separated and resiliently supported by a crown 16 or 216 of rubber or similar material.
  • This crown is glued or vulcanized either on a single interior or exterior face, or on both sides, or simply retained by shoulders as illustrated in the drawing.
  • the whole track, elastic ring and support and elastic rings group can be applied to the device with ease of assembly, disassembly and maintenance, or the track and relative elastic ring can be directly applied to the seat.
  • the track thus produced also allows: (1) oscillations in all directions; (2) automatic alignment and perfect contact with the roller although rigidly mounted; (3) adaptation to different rate numbers, ie thickness of the wire at work; (4) the passage of any thickening of the wire due for example to fittings or reattachments of material; (5) the use of a high surface area of the elastic crown guaranteeing an unlimited service life; (6) the use of a very elastic quality of rubber; (7) an appropriate thickness without limitation of shape, size and morphology; (8) optimal pressure interference between track and roller; (9) negligible wear over time, the rubber being in contact neither with the wire nor with the roller.
  • appendix 107 or 307 acting as a wire guide casing avoids possible windings of the wire on the roller; acts as a roller cleaner with the possible application of a layer of felt or the like; allows the wicking wire to be guided (by means of helical grooves 109 or the like), even with the possibility of rotations in both directions and with support of the material towards the pinching point between the track and the roller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
EP94830115A 1993-03-19 1994-03-17 Vorrichtung zum Strecken, durch Falschzwirnen, Textil-Faserstrangen für Spinnen bestimmt Withdrawn EP0616060A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI930052A IT1262043B (it) 1993-03-19 1993-03-19 Dispositivo perfezionato per lo stiro con falsa torsione di uno stoppino destinato alla filatura.
ITFI930052 1993-03-19

Publications (1)

Publication Number Publication Date
EP0616060A1 true EP0616060A1 (de) 1994-09-21

Family

ID=11350377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94830115A Withdrawn EP0616060A1 (de) 1993-03-19 1994-03-17 Vorrichtung zum Strecken, durch Falschzwirnen, Textil-Faserstrangen für Spinnen bestimmt

Country Status (2)

Country Link
EP (1) EP0616060A1 (de)
IT (1) IT1262043B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114003B (de) * 1953-07-14 1961-09-21 Onderzoekings Inst Res Falschzwirnvorrichtung zur Herstellung von gekraeuselten, elastischen Faeden oder Garnen aus thermoplastischen Polymerisations- oder Polykondensationsprodukten
GB1001454A (en) * 1961-09-12 1965-08-18 Onderzoekings Inst Res Improvements in or relating to the false-twisting of a running yarn
GB1101713A (en) * 1964-01-25 1968-01-31 Scragg & Sons Driving yarn false twist spindles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114003B (de) * 1953-07-14 1961-09-21 Onderzoekings Inst Res Falschzwirnvorrichtung zur Herstellung von gekraeuselten, elastischen Faeden oder Garnen aus thermoplastischen Polymerisations- oder Polykondensationsprodukten
GB1001454A (en) * 1961-09-12 1965-08-18 Onderzoekings Inst Res Improvements in or relating to the false-twisting of a running yarn
GB1101713A (en) * 1964-01-25 1968-01-31 Scragg & Sons Driving yarn false twist spindles

Also Published As

Publication number Publication date
ITFI930052A0 (it) 1993-03-19
ITFI930052A1 (it) 1994-09-19
IT1262043B (it) 1996-06-18

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