Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
  • D01H1/14—Details
  • D01H1/20—Driving or stopping arrangements
  • D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
  • D01H1/241—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles driven by belt

Definitions

• the invention relates to a machine for producing twisted threads according to the preamble of claim 1.
• Such a machine can be designed, for example, as a ring spinning machine, ring twisting machine, open-end rotor spinning machine, open-end friction spinning machine or the like.
• the common criterion of such machine variants is that they produce twisted threads.
• staple fibers, continuous threads or filaments can be considered as the starting material for such twisted threads.
• the working units of generic machines, such as spindles, rotors, opening rollers, etc. are driven by tangential belts at Wirtein. As a result of the small
• this object is achieved in that the tangential belt, in addition to its U steering points in the two longitudinal end regions of the machine, also has at least one further point in its essentially straight course by means of a pressure roller or a host ice cream with or without only a slight wrap against a drive Friction roller can be pressed and driven by means of it.
• the additional drive point reduces the stress on the tangential belt, combined with a reduction in energy losses.
• the additional drive point is, for example, in the middle of the belt length.
• at least one drive friction roller according to the invention is advantageously provided on each machine side.
• the pressure roller is formed by the whorl of one of the working units.
• the spacing between adjacent work units need not be increased.
• the whorl is advantageously one
• the diameters of these deflection disks can be chosen freely and thus so small that - starting from motors with the usual number of poles and thus common speeds - the required tangent a!
• the speed is also achieved if, according to the invention, the pressure friction rollers can be arranged directly on the rotor shafts of the electric motor assigned to them, without stopping an energy-consuming transmission.
• the bearing of the deflection disk 23 and the electric motor 26 ' are arranged in a stationary manner on the right machine end on a machine frame 28 which is only shown in sections. Deviating from this, the bearing of the deflection disk 25 and the electric motor 26 are arranged on a carriage 29.
• the carriage 29 can be adjusted in the direction of the double arrow B in the machine longitudinal direction for tensioning the tangential belt 13 by means of a threaded spindle 30 which can be driven by hand or by motor and which engages in the thread of a nut 31 connected to the carriage.
• the Tangenti alriemen 13 is also in its substantially straight course at two opposite points by one each the tangential belt 13 without wrapping against a pressure roller
• the respective pressure rollers are formed here by the whorl 14 of a work unit, ie a spinning station, Fig. -3 shows, for example, that the pressure roller cooperating with the drive friction roller 43
• Fig. 1 shows that the drive Fri-tion roller 42 is attached to the rotor shaft 44 of an electric motor 46.
• 3 shows that the drive friction roller 43 is fastened on the rotor shaft 45 of an electric motor 47. Both electric motors 46, 47 are on the
• a ring bench 17 is also arranged on each longitudinal side of the machine, which is guided vertically in a straight line and can be moved up and down by means of ropes 19 running over deflecting rollers 18, by means of a reversible motor 21 on a rope drum 20 can be wound on and off her.
• the only tangential belt 13 of this machine 10 which drives the vortex rows 11, 12 located there on both longitudinal sides of the machine, is deflected via a total of four deflection disks 22 to 25 arranged in pairs on the machine end faces. Of these, only the deflection disks 25 and 26 are motor-driven. Each of the deflection pulleys steers the Tangenti a! around 90 degrees.
• the tangential belt is driven in the direction of the arrows A.
• the illustrated drive direction of the tangential belt 13 can, if desired, also be reversed in order to give the threads to be made an S or Z rotation.
• Fig. 1 shows that the deflection plate 24 sits on the Lauferwel le 27 of an electric motor 26.
• the deflection disk 22, however, is connected to the rotor shaft 27 'of a further electric motor 26'.
• the electric motors 26 and 26 ' can be, for example, asynchronous motors.
• Fig. 4 shows a circuit diagram of the electric motors serving the belt drive.
• 5 to 7 show arrangements of drive friction rollers and pressure rollers.
• the whorls 14 belong to drive devices 114 of work units 115, which here are spinning positions and each have a spindle 116 driven by the whorl 14.
• the spindle 116 carries the bobbin 117, on which the twisted thread produced is wound.
• Tangenti al ie en 13 is pressed against the whorls 14 by rotatably mounted, non-driven tensioning rollers 15.
• each of the two spindle rows there is a row of drafting systems, of which only three continuous lower rollers 16 of the drafting systems located on the front machine side are shown in FIG. 1.
• FIG. 1 shows a fragmentary, broken front view of a ring spinning machine in schematic representation, only a few working elements being shown.
• FIG. 2 shows a broken plan view of the tangential belt drive of the machine according to FIG. 1 in a schematic representation, only a few whorls of the driven lockers being shown.
• FIG. 3 shows a detail in a schematic representation of a side view of a work unit on which a drive friction roller is arranged. **
• At least one of the electric motors can optionally be switched off, so that the tangential belt can then only be driven by the other electric motor or motors.
• This enables an economical partial load operation of the machine if, for example, the machine runs under certain operating conditions at a lower than its maximum speed, to which the power of the drive motors must be designed. Switching off individual motors can also be advantageous after the machine has run up, which requires increased drive power, to its operating speed, which requires a lower continuous drive power.
• the electric motors driving the relevant drive friction rollers can only serve to drive the tangential belt and not for any other purpose.
• other essential work organs can.
• the machine (such as drafting systems, ring banks or the like) are driven by at least one other electric motor. It can preferably be provided that one of the electric motors which act on the drive of the tangential belt serves simultaneously as a pilot motor for controlling or regulating the speed of at least one of the other electric motors.
• a control unit 50 is connected to a supply network 51.
• the control unit 50 outputs a frequency-variable voltage to the distribution line 52.
• Each of the four electric motors can be individually connected to the distribution line 52 via a switch 53 to 56. There is therefore the possibility that one of the electric motors can optionally be switched off.
• the electric motors 26 ', 46 and 47 serve exclusively to drive the tangential belt 13.
• the electric motor 26 essentially serves only to drive the tangential belt 13.
• the rotor of a motor which has just been switched off can run idle or it can also run for the motor in question
• Drive friction roller a freewheel can be provided so that only the drive friction roller idles alone.
• the electric motor 26 not only drives the tangential belt 13, but also a pulse generator 32, which
• These pulses are control pulses for two frequency dividers 33, 34 of adjustable divider ratios, which emit control pulses for DC link converter 33 ', 34', which supply alternating currents of variable frequencies for feeding the two AC motors 21 and 35.
• the AC motor 35 serves to drive the drafting systems of the machine 10, the lower rollers 16 of which FIG. 1 shows.
• the motor 21 serves to drive the ring rail 17, as has already been explained.
• the tangential belt 13 is deflected at four points. Depending on the length and design of the machine, it may be necessary or expedient to instead deflect the tangential belt 13 only two or three times at the ends.
• 5 to 7 show three design variants of the arrangement of the pressure roller or whorl 41 and the drive friction roller 42.
• the sum formed from the radii R, r and the belt thickness D is mathematically smaller than the actual distance s of the axes of rotation 57 and 58 from one another.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=6188758

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (17)

Family Cites Families (15)

• 1983
  • 1983-01-20 DE DE19833301811 patent/DE3301811A1/de not_active Withdrawn
• 1984
  • 1984-01-18 JP JP59500666A patent/JPS60500503A/ja active Pending
  • 1984-01-18 DE DE84DE8400010T patent/DE3490027D2/de not_active Expired
  • 1984-01-18 EP EP84900606A patent/EP0133435A1/de not_active Withdrawn
  • 1984-01-18 GB GB08423259A patent/GB2146048B/en not_active Expired
  • 1984-01-18 WO PCT/DE1984/000010 patent/WO1984002932A1/de active Application Filing
  • 1984-01-18 US US06/662,288 patent/US4635431A/en not_active Expired - Fee Related
  • 1984-01-18 CH CH4518/84A patent/CH668435A5/de not_active IP Right Cessation
  • 1984-01-20 IT IT19244/84A patent/IT1173083B/it active

Non-Patent Citations (1)

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