DE19848752A1 - Ring spinner with a tubular balloon limit shrouding uses a reduced traveler mass and an increased spindle drive speed for increased productivity without additional attachments - Google Patents

Abstract

The ring spinner has spinning stations with a spindle drive (20'), a ring (12) and a traveler (14) and a surrounding balloon limit shrouding (16). The ring spinner has spinning stations with a spindle drive (20'), a ring (12) and a traveler (14) and a surrounding balloon limit shrouding (16). The spindle rotary speed or the traveler speed are set to give the required yarn count number from a published comparative table in Braecker Handbook December 31, 1995, section 2.10 World of Performance. According to the comparative table figures, the traveler mass is reduced by a divisor S' to increase the speed of the spindle drive (20') by a factor S. The S value is 1.0-2.5 and especially 1.5-2.5. With a ring (12) diameter of 35-55 mm, the mass of the traveler (14) is up to 50 mg. The spindle drive (20') can operate at a speed up to 40000 rpm. The shrouding (16) is a tube, mounted on the ring frame (13), with an inner diameter equal to or larger than the ring (12) diameter Or the shrouding (16) is a coil of wire, concentric to the spindle. The ring (12) is a T-shaped or angled flange ring. An Independent claim is included for the operation of a ring spinner with an increased spindle drive speed and a reduced traveler mass. Preferred Features: A yarn with a count number of 100-30 is produced using a ring diameter of 36-42 mm and a traveler mass of 5-15 mg, with a spindle drive speed of 40000-30000 rpm. A yarn with a count number of 30-60 is produced using a ring diameter of 40-50 mm and a traveler mass of 15-50 mg, with a spindle drive speed of up to 30000 rpm. The yarn (30) is laid as a coil (36) at the inner wall of the shrouding (16). Only a short yarn length is at a free tension between the traveler (14) and the laying point (P) at the shrouding (16).

Description

The invention relates to a spinning machine with a tubular balloon restrictor and a method for yarn production with such a machine, similar to the General terms of the corresponding independent claims.

According to the general state of knowledge, thread tension and rotor wear are limiting factors in increasing the performance of ring spinning machines, since the the forces acting on the thread balloon and on the rotor increase exponentially with the speed Accordingly, there is a tendency to produce smaller spools of what but has the disadvantage that the unproductive times of a spinning machine receive a higher share of the operating time.

From German patent applications DE 39 09 673, DE 196 25 940 or DE 197 05 872 is known to use tubular balloon limiters to the To reduce the diameter of the thread balloon and thus also the thread tension. Next is through the tubular balloon limiter, according to DE 196 25 940, with a conical design creates a funnel-shaped air column, which leads to another Reduction of the air resistance to be overcome by the thread and thus the company voltage should lead. The balloon restrictor has an inner diameter that is smaller on average than the package, so that the balloon is divided limiter with actuators is necessary so that the individual spinning position better is operable.

It is an object of the present invention to provide a spinning machine which manages without complex additional equipment and a more extensive performance increases.

According to the invention, this is achieved by the subject matter of the independent claims possible. The dependent claims relate to advantageous developments.  

The spinning machine according to the invention has spinning stations, each with a spindle, a spindle drive, a ring and a rotor rotating thereon, and a guide surrounding the spindle. The ring, preferably connected to the guide by means of a ring bench, is arranged displaceably along the axis of the spindle. While with conventional spinning machines at a certain speed of the spindle or at a certain rotor speed, a yarn with a rotor mass matched to the thread number can be produced, with value ranges for the thread number, rotor mass and rotor speed according to the comparison table under section 2.10 of the Bräcker manual, Edition dated December 31, 1995, entitled "World of Performance", in the spinning machine according to the invention, compared to the conventional spinning machine according to the comparison table of the brochure mentioned, the rotor mass with a divisor S ^{2 is} reduced and the speed range of the spindle drive is reduced extends the factor S. S can assume a width between 1 and 2.5, in particular 1.5 to 2.5. This means that a spinning machine with ring diameters in the range between 35 and 55 mm can get by with masses of only up to 50 mg, but the spindle drive is designed for operating speeds of up to 40,000 rpm. The guide preferably has the shape of a tube which is arranged on a ring frame, the inside diameter of the guide being larger than the ring diameter. The spinning rings can be T-flange rings or inclined flange rings. The guide can also be designed as a wire spiral concentric with the spindle.

In the following the invention will be described in more detail with reference to the schematic drawings explained. Show it:

Fig. 1 partially a meridian section through a spinning station with the essential spinning elements and

Fig. 2 simplifies a plan view of the arrangement in Fig. 1, in the longitudinal direction of a spindle.

In a spinning station of a ring spinning machine, a rotation-imparting and winding-up device in the form of a spindle 20 is arranged several times, of which only a thread winding 22 is shown schematically in FIG. 1, which is set in rotation by a spindle 20 . A runner 14 on a ring 12 serves to guide the thread 30 and is moved back and forth in the axial direction of the spindle 20 by means of a ring frame 13 . A guide 16 in the form of a tube surrounds the spinning position, that is, the spindle 20 and the ring 13 , so that no free thread balloon 32 , shown in dashed lines, can form.

According to the invention, together with the guide 16, a rotor 14 with a mass is used which is substantially less than the mass in conventional spinning machines. The rotor 14 may have a shape fitted to T-flange rings or to angled flange rings.

The table below shows the dimensions which the elements involved in the spinning process according to the invention have in comparison with those of a conventional machine.

According to version 1, for example, with a rotor mass L1 = 10 mg at egg ring diameter = 40 mm, a yarn with the number Ne 60 for a spindle speed N1 = 30 000 U / min can be produced, what with a conventional spinning machine would lead to a balloon collapse and thus to a thread break. The The inside diameter of the guide is in the range of the ring diameter or up to 10 mm more to choose, or in the area of the sleeve length, which is up to 30% below or can be exceeded.

In contrast to the formation of a free thread balloon 32 in a spinning machine without a guide 16 according to the invention, the thread 30 is in the form of a thread spiral 36 on the inner wall of the guide or tube 16 , with only a short piece of thread between the rotor 14 and the run-up point P on the pipe 16 is freely ge. The thread 30 lies on the inner wall of the tube 16 in the form of a spiral. In Fig. 1 the development 38 of such a thread spiral on the inner circumference of the tube 16 is shown. For comparison, a second development 34 of a thread is shown at a spinning station without a guide 16 , or the projection of the thread balloon 32 onto the surface of the tube 16 , the thread path of the free balloon 32 being substantially steeper than that of the thread spiral 36 .

The drive 20 'of the spindle is preferably designed as an electric motor.

The thread spiral 36 or 38 can extend over more than 360 ° circumferential angle on the inner surface of the tubular guide 16 .

In Fig. 2, the circumference of the guide 16 can first be seen from the outside inwards, further the thread spiral 36 lying against its inside, which is deflected inward by the rotor 14 on its career 12 ', so that there is between the runner 14 and the thread winding or cop 22 extends a straight piece of thread 39 .

The direction of rotation of the rotating parts in the arrangement in Fig. 2 or 3 is counterclockwise according to the arrows shown.

In a spinning machine according to the invention, despite a substantially higher rotor speed, there is a substantially unchanged force plan compared to a conventional spinning machine, namely in the production of similar yarns, since the centrifugal force Z, which is proportional to the rotor mass and the square of the rotor speed, remains constant , if the rotor mass is reduced by any divisor S ² and the speed is increased by a factor S at the same time.

An essential feature of the invention is therefore that with the use of a guide 16 surrounding the spindle, a substantial increase in performance by increasing the rotational speed can only be achieved if a lighter runner is used at the same time.

The guide 16 , which is preferably designed as a tube, may only be arranged at a distance from the ring above the ring. To thread a thread, the guide 16 is slotted.

Legend

12th

ring

13

Ring frame

14

runner

16

Leadership, pipe

20th

spindle

20th

'' Spindle drive

22

Thread wrap, cops

30th

thread

32

Thread balloon

34

completion

36

Thread spiral

38

completion

39

straight piece of thread
L1 rotor mass
R1 ring diameter
Z centrifugal force

Claims (12)

1. Spinning machine with spinning stations, each having a spindle ( 20 ), a spindle drive ( 20 ') therefor, a ring ( 12 ) and thereon a rotor ( 14 ) and a guide ( 16 ) surrounding the latter, the ring ( 12 ) is displaceably arranged along the axis of the spin del ( 20 ) and, at a specific speed of the spin del ( 20 ) or rotor speed, a yarn can be produced with a rotor mass matched to the yarn number, and the comparison table for yarn number, rotor mass and rotor speed is given in section 2.10 of the Bräcker handbook, edition up to 31.12.1995, with the title "World of Performance", characterized in that, in comparison to a conventional spinning machine according to the comparison table of the manual mentioned, the rotor mass is reduced by a divisor S ² The speed range of the spindle drive ( 20 ') is expanded by the factor S, with values between 1 and 2.5, in particular between, for S 1.5 and 2.5 are to be applied. 2. Spinning machine according to claim 1, characterized in that with a ring diameter R1 = 35 to 55 mm of the ring ( 12 ), the rotor mass L1 of the rotor ( 14 ) is up to 50 mg, and that the spindle ( 20 ) has a drive , which enables an operating speed N1 of up to 40,000 rpm. 3. Spinning machine according to claim 1 or 2, characterized in that the Füh tion ( 16 ) has the shape of a tube. 4. Spinning machine according to one of the preceding claims, characterized in that the guide ( 16 ) is arranged on a ring frame ( 13 ). 5. Spinning machine according to one of the preceding claims, characterized in that the inner diameter of the guide ( 16 ) is equal to or larger than the ring diameter (R1). 6. Spinning machine according to one of the preceding claims, characterized in that the ring ( 12 ) is a T-flange ring. 7. Spinning machine according to one of claims 1 to 5, characterized in that the ring ( 12 ) is an oblique flange ring. 8. Spinning machine according to one of the preceding claims, characterized in that the guide ( 16 ) as a with the spindle ( 20 ) concentric wire spiral is guided out. 9. A method of operating a spinning machine, in particular according to one of the vorste existing claims, using a spinning machine with spinning stations, each because a spindle ( 20 ), a ring ( 12 ) and then a rotor ( 14 ) and a guide ( 16 ), the ring ( 12 ) being arranged to be displaceable along the axis of the spindle ( 20 ), characterized in that, in comparison with a conventional spinning machine at the time of filing this request for protection, the speed range of the spindle drive ( 20 ') the rotor mass is reduced with a divisor S ² . 10. The method according to claim 9, characterized in that in a ring knife R1 = 36. . . 42 mm and a rotor mass L1 = 5. . . 15 mm) a yarn with the Yarn number G1 = 100. . . 30 is produced, with a spindle speed N1 = 40,000. . . 30,000 rpm is driven.   11. The method according to claim 9, characterized in that in a ring knife R2 = 40. . . 50 mm and a rotor mass L2 = 15. . . 50 mg a yarn with the Yarn number Ne = 30. . . 60 is produced, with a spindle speed up to N2 = 30,000 rpm. 12. The method according to claim 9, 10 or 11, characterized in that a thread ( 30 ) in the form of a thread spiral ( 36 ) is applied to the inner wall of the guide ( 16 ), only a short piece of thread between the rotor ( 14 ) and one Ramp point (P) on the guide ( 16 ) is freely tensioned.