EP0308823A1 - Lifting device for ring rails - Google Patents

Abstract

The invention relates to a lifting device for ring rails 3 and for rails 4 for balloon-contracting rings 5 and/or yarn-guide rails 6 of a ring spinning or ring twisting machine, with a switch unit, with a winding drum 11, 12, 13 actuated by the switch unit and with pull members 14, 15, 16 assigned to the respective rails and to the winding drum. According to the invention, in addition to a ring rail, at least one further rail 4, 6 is assigned a switch unit 9, 10 with a winding drum 12, 13. <IMAGE>

Description

The invention relates to a lifting device for ring benches and for benches for balloon constriction rings and / or thread guide benches of a ring spinning or twisting machine, with switching mechanism, with the winding drum actuated by the switching mechanism and with the respective banks and tension members connected to the winding drum.

The ring bench, the bench for balloon constriction rings and the thread guide bench are normally installed in a vertical direction on ring spinning machines. The three aforementioned elements are moved synchronously, but with different amplitude levels. The ring bank executes the up and down movement with the greatest amplitude; the amplitude of the bank of the balloon constriction rings is lower, that of the bank for the thread guides is even lower. It is also part of the state of the art to firmly connect the bench for balloon constriction rings and the bench for thread guides to one another and to move them together.

If the amplitude of the vertical up and down movement of individual of the banks mentioned above is to be changed independently of that of other banks, this requires considerable assembly work and adjustment of the individual elements to one another. For this purpose, disks had to be replaced, onto or from which the flexible tension members are wound up or unwound. On these tension members are in generally the individual banks attached. This resulted in disadvantageously time-consuming and costly handling when changing the amplitude height of the individual banks.

As prior art, winding drums of different diameters are also known, but they are non-rotatably arranged on a common, rotatable shaft. This drum shaft is moved by a further tension member, also fastened to a winding drum, which is attached at its other end to the winding drum of a switching device, by means of which the band is gradually shortened continuously as it is pulled off. The last-mentioned tension band is also guided over a deflection roller which is attached to a swivel arm continuously pivoted by a rotatable cam disc, as a result of which the drum shaft is periodically rotated back and forth. By overlaying the two movements, i.e. H. gradual shortening and cyclical deflection of the drawstring achieves the known Kötzer structure.

The present invention has for its object to provide a simpler way to independently adjust the amplitude and height of the ring bench, the bench for ballooning rings and the bench for thread guides.

The task of an independent adjustment of the height transfer is achieved according to the invention in that, in addition to a ring bench, at least one further bench is assigned a switching mechanism with a winding drum. This ensures that both the starting position and the speed of advancing the vertical upward movement of the bank equipped with the additional, separate switching mechanism can be set independently. The task of independently adjusting the amplitude of the vertical stroke movement of each sparse benches is achieved according to the invention in that each type of bench is assigned a separate deflection roller which is independently adjustable in its distance from the fixed pivot point of a lifting lever.

Furthermore, according to the invention, there is the possibility that each type of bank of a ring spinning or twisting machine is assigned a separate, independently adjustable switching mechanism with a winding drum and / or a separate, independently adjustable deflection roller. This means that each bank type of a ring spinning or twisting machine can be set independently of any other bank type of this machine.

The separate switching mechanisms can be acted upon, for example based on the movement of the lifting lever, at the same time to carry out a switching step.

According to the invention there is also the possibility of moving the banks of a plurality of balloon constriction rings arranged one above the other independently of one another, each bank being able to be assigned a separate tension member and a separate switching mechanism and / or a separate deflection roller. On the other hand, two of the banks (ring bank and bank of the balloon constriction rings or bank of the balloon constriction rings and bank of the thread guides) can be rigidly connected to one another and moved together, with a separate tension member, a separate deflection roller and a separate switching mechanism being omitted for one of the aforementioned banks.

A mechanical step-by-step mechanism can be used as the switching mechanism. However, according to the invention there is also the possibility that an electric drive is used as the switching mechanism, which can be designed, for example, as a stepper motor. The advantage of such an embodiment is that the forwarding (relocation) depends on the ring bank position for everyone gears can be chosen freely and independently of one another. For example, the thread guide could stop at first, climb up later and stop again at the end. Kötzerbildung could also be programmed without the need for mechanical adjustments.

In a further embodiment of the invention, each winding drum can be driven by a separate drive motor acting as a switching mechanism, each of the drive motors being drive-controllable independently of the other drive motors, and all drive motors being linked to one another in the correct manner. Here, the drive motors can be controlled by at least one control device.

The connection of the winding drum - separate drive motor - control device ensures that the various types of bench of the machine can move independently of one another. Since the control devices can each be driven according to an input program, it is further ensured that the different movements can be easily adjusted. The functionally correct connection of the drive motors means the simultaneous start and end of the run, whereby in the case of lifting games a synchronism of the lifting games is guaranteed.

The drive motors are advantageously stepping motors, with the aid of which the angles of rotation of the winding drum can be set precisely and above all reproducibly.

The movement of the ring bench is largely predetermined by the structure of the coil winding. Yarn fineness, delivery speed and bobbin diameter determine the speed of the indexing movement. However, this indexing movement is very easy, quick and in fine stages adjustable so that optimal cop shapes can be achieved. Above all, it is not difficult to wind a conical cop on a cylindrical sleeve or a cylindrical cop on a conical sleeve.

There is also greater design options in the choice of the lifting height of the ring bench games and their speed profile over the lifting height. For example, the lifting height of the ring bench game can be increased very easily from 40 mm to 50 mm, for example, the mean ring bench speed can be selected differently in the upward stroke than in the heel stroke and the speed of the ring bench can increase or decrease according to any profile .

The movement of the balloon constriction rings and the thread guide can be adjusted in such a way that optimal wind-up or wind-down conditions can be achieved. The movements can be convergent or divergent or parallel to one another or alternating between them. If necessary, the banks of the balloon constriction rings and the thread guide cannot make any cyclical back and forth movements, but are only gradually advanced.

According to another embodiment of the invention, the cyclic lifting movement of the ring bench can be generated by a cam. In this case, the electronic control only effects the gradual advancement of the lifting movement. Here, the setting of the ring bench movement is simplified, since it extends only to advance the cyclical lifting movement, which is otherwise rarely changed.

• Fig. 1 eine schematische Seitenansicht einer Hubvorrichtung;
• Fig. 2 eine schematische Seitenansicht einer Hubvorrichtung;
• Fig. 3 ein Diagramm der Bewegung der Bänke bei der Ausfüh­rungsform nach Fig. 2;
• Fig. 4 eine andere Ausführungsmöglichkeit der Hubvorrichtung in schematischer Seitenansicht;
• Fig. 5 ein Diagramm der Bewegung der Bänke nach der Ausfüh­rungsform gemäß Fig. 4;
• Fig. 6 eine andere Ausführungsmöglichkeit der Steuervor­richtung in schematischer gebrochener Ansicht.

The invention is described below with reference to exemplary embodiments shown in the drawing. The drawing shows:

• Fig. 1 is a schematic side view of a lifting device;
• Fig. 2 is a schematic side view of a lifting device;
• Fig. 3 is a diagram of the movement of the banks in the embodiment of Fig. 2;
• 4 shows another possible embodiment of the lifting device in a schematic side view;
• FIG. 5 shows a diagram of the movement of the benches according to the embodiment according to FIG. 4;
• Fig. 6 shows another embodiment of the control device in a schematic broken view.

According to FIG. 1, a number of schematically illustrated spindles 2 are arranged on a spindle bench 1 of a ring spinning or twisting machine. A ring bank 3 moves in the area of these spindles 2. A bank 4 for balloon constriction rings 5 is arranged above this. Above this bank 4 for balloon constriction rings there is also a bank 6 for thread guides 7. Thus, the yarn material is given a functionally appropriate guidance or further development to the finished product by the respective thread guides 7, the balloon constriction rings 5 and the corresponding runners of the ring bank 3.

As can be seen, the ring bank 3 is connected via a tension member 14 to a winding drum 11 of a switching mechanism 8. Here, the tension member 14 runs over deflection rollers 33, 32, over a deflection roller 19 and over a deflection roller 31 to the winding drum 11.

In the same way runs a tension member 15, which is connected to the bank 4 for balloon constriction rings over the Rolls 34, 30, 20, 29 to a winding drum 12 of a switching mechanism 9.

The same course results for a tension member 16, which controls the movement of the bench for thread guides, via the rollers 35, 28, 21, 27 to a winding drum 13, which is connected to a switching mechanism 10.

As can be seen, the deflection rollers 19, 20 and 21 are each fastened via elongated holes 22, 23 and 24 to a lifting arm 17 which can pivot about a pivot point 18. This pivoting movement is generated by a correspondingly designed cam plate 25, which is mounted in a pivot point 26 and interacts with a roller 40 in the front region of the lifting arm 17. The cam disc 25, often referred to as a heart eccentric, is driven by the gear of the machine.

The lifting arm is also connected via a connection 39 to levers 36, 37 and 38 of the corresponding switching mechanisms 8, 9 and 10, as a result of which the switching mechanisms are actuated with each double stroke of the lifting arm 17.

By rotating the cam plate 25, the lifting arm 17 pivots up and down about the pivot point 18, this movement being communicated to the respective banks 3, 4 and 6 via the tension members 14, 15 and 16. The different amplitude heights of the vertical up and down movement of the individual benches are determined by the distance of the deflection rollers 19, 20 and 21 from the pivot point 18 of the lifting arm 17 and can be changed by changing this distance by adjusting the deflection rollers in the elongated holes 22, 23 and 24 can be set.

The switching devices 8, 9 and 10 regulate the forwarding (transfer) of the bank movements; the angular positions of the Winding drums 11, 12 and 13 determine the starting position and starting position of the respective bank movement.

This arrangement enables an independent setting of each parameter of the height shift and the cyclical up and down movement of the respective banks in a simple manner.

In an embodiment that is not shown in more detail, it is also conceivable to provide a plurality of banks of balloon constriction rings arranged one above the other, which are rigidly connected to one another and can be actuated by a common tension member from a common switching mechanism via a common deflection roller.

Another embodiment of the invention, also not shown in detail, is to move the banks of a plurality of balloon constriction rings arranged one above the other independently of one another, it being possible for each bank to be assigned a separate tension member and a separate switching mechanism and / or a separate deflection roller.

In any case, the construction according to the invention enables the amplitude of the vertical lifting movement of the respective banks to be set independently in a simple manner.

A mechanical stepping mechanism of common design can be used as the switching mechanism 8, 9 or 10.

2 and 3, each winding drum 11, 12 and 13 is in each case moved by a switching mechanism 8, 9 and 10 driven by a separate drive motor 42, 43, 44. Here, each of the drive motors 42, 43, and 44 is connected to a control device 41, which is shown only schematically in the form of a block in FIG. 2.

This control device has three outputs, which are designed to be programmable independently of one another and each act on one of the drive motors. The drive motors 42, 43 and 44 are preferably stepping motors, with the aid of which the rotary movement of the winding drum 11, 12 and 13 can be set precisely and above all reproducibly.

The adjustability relates both to the stroke distance between reversal points which can be laid jointly or independently of one another along the axis of the spindles 2, to the constant or changing stroke speed in both stroke directions, or different with the up and down movement of the ring rail, and to one of the course of the trigger Dependent program sequence of the drum movement, through which, for example, after completion of the cops on the spindles 2, the ring banks 3, the balloon constriction rings 5 and the thread guides 7 are guided into the positions provided for the bobbin change.

3 shows a diagram of the movement of the individual banks. The stroke h is plotted against the time t. The end of the deduction is shown in the EA area. As can be seen, not only the ring bank 3, but also the bank 4 for the balloon constriction rings and the bank 6 for the thread guides perform up and down movements. The movements can be programmed independently of each other with regard to their upward movement and their lifting play and can either be convergent or divergent or parallel to one another or alternate between them.

In the embodiment according to FIG. 4, the tension member 14 for the ring rail 3 runs over a deflection roller 19 of a lifting arm 17 which can be pivoted by means of a rotatable cam plate 25 to the winding drum 13 connected to the drive motor 44.

As can be seen, the lifting arm 17 is mounted in a pivot point 18 and has a roller 40 at the front end, which cooperates with the cam disk 25 mounted in a pivot point 26. The drawstring 14 runs here via the deflection rollers 33, 32, 19, 31, 27 to the winding drum 13, which is driven by the separate drive motor 44 acting as a switching mechanism 10.

The remaining tension members 15 and 16 are driven as in the embodiment according to FIG. 2. Here, each of the drive motors 42, 43 and 44 is connected to a separate control device 41a, 41b, 41c. Independent control devices are therefore provided which are synchronized. This synchronization can be achieved in that they are excited externally by trigger signals from the machine control system, which are supplied via a line 45, for the simultaneous delivery of their independently programmable control signals.

• Figur 2 - eine einzige Steuervorrichtung 41 mit drei unab­hängig voneinander programmierbaren Ausgängen,
• Figur 4 - drei unabhängig voneinander arbeitende Steuervor­richtungen 41a, 41b und 41c, welche extern durch die Maschi­ nensteuerung zur gleichzeitigen Abgabe ihrer unabhängig pro­grammierbaren Steuersignale angeregt werden und
• Figur 6 - eine der Steuervorrichtungen (41c) ist mit einem führenden Taktgeber (41d) ausgestattet und steuert die ande­ren Steuervorrichtungen 41a und 41b.

According to FIG. 6, however, there is also the alternative possibility that one of the control devices, for example 41c, is equipped with a leading clock generator 41d and controls the other control devices 41b and 41a. In any case, the embodiments must ensure that, despite the free programmability of the bank movements, synchronization is ensured in the sense that the reversal times coincide functionally. For this purpose, only three exemplary embodiments are given, namely:

• FIG. 2 - a single control device 41 with three independently programmable outputs,
• Figure 4 - three independently operating control devices 41a, 41b and 41c, which are operated externally by the machine can be stimulated to simultaneously deliver their independently programmable control signals and
• Figure 6 - one of the control devices (41c) is equipped with a leading clock (41d) and controls the other control devices 41a and 41b.

5 shows a diagram of the movements of the hoist according to FIG. 4 in more detail. As can be seen, the ring bank 3 is given its cyclical up and down movement by the cams 25 - the switching mechanism 10 serves to advance the movement. The movements of the other two types of bank 4 'and 6' is freely programmable, whereby it can be seen from the diagram that neither the bank 4 'for the balloon constriction rings nor the bank 6' for the thread guide perform up and down movements.

The bank 6 'for the thread guide performs a slowly rising movement; the bank 4 'for the balloon constriction rings goes through a movement parallel to the ring bank movement in the initial region and then continues flattened.

In this embodiment, the cyclical lifting movement of the ring bench 3 is not generated by the electronic control via the drive motor 44, but rather via the cam disk 25. In this case, the electronic control only effects the gradual advancement of the lifting movement. In this embodiment, the setting of the ring bench movement is simplified since it only extends to the advancement of the cyclical lifting movement.

In the embodiment according to FIGS. 2 and 4 there is also the possibility that the starting position of at least one of the winding drum 11, 12 and 13 is made adjustable.

In an embodiment that is not shown in more detail, it is also conceivable to provide a plurality of banks of superimposed balloon constriction rings which are arranged one above the other and are rigidly connected to one another and can be driven by a common drive member by a common tension member 15.

Another embodiment of the invention, also not shown in detail, is to move the banks of a plurality of balloon constriction rings arranged one above the other independently of one another, with each bank having a separate tension member and a separate drive motor.

The invention ensures that the various types of bench of a machine can move independently of one another, these different movements being easily adjustable, so that an exact adaptation to the functional workflow is made possible. It is understood that in two-sided ring spinning or twisting machines, the bank types on both sides can be moved by the same winding drum.

Claims (17)

1. Lifting device for ring banks and for banks for balloon constriction rings and / or thread guide banks of a ring spinning or twisting machine, with switching mechanism, with winding drum actuated by the switching mechanism and with tension members connected to the respective banks and with the winding drum, characterized in that in addition to a ring bank ( 3) a switching mechanism (9, 10) with a winding drum (12, 13) is assigned to at least one further bank (4; 6). 2. Lifting device according to claim 1, characterized in that each type of bank of a ring spinning or twisting machine is assigned a switching mechanism (8, 9, 10) with winding drum (11, 12, 13). 3. Lifting device according to claim 1, characterized in that each switching mechanism (8, 9, 10) is separately adjustable. 4. Lifting device according to claim 1, characterized in that each tension member (14, 15, 16) arranged on a pivotally mounted lifting arm (17) arranged in their Distance from the pivot point (18) of the lifting arm (17) is assigned adjustable deflection roller (19, 20, 21). 5. Lifting device according to claim 4, characterized in that on the lifting arm (17) arranged deflection rollers (19, 20, 21) are fixed within elongated holes (22, 23, 24), the long axes of which are at least approximately in the direction of the lifting arm (17 ) extend. 6. Lifting device according to one of the preceding claims, with a plurality of balloon constriction rings per job, which are arranged one above the other attached to banks, characterized in that each of the banks can be moved independently of each of the other banks via switching mechanism, winding drum, deflection roller and tension member. 7. Lifting device according to one of the preceding claims, characterized in that in each case via the switching mechanism (8, 9, 10) the lifting speed, via the winding drum (11, 12, 13) the initial position and via the deflecting roller (19, 20, 21) the stroke of the respective bank movements is adjustable. 8. Lifting device according to claim 7, characterized in that the starting positions of the winding drum (11, 12, 13) are adjustable. 9. Lifting device according to one of the preceding claims, characterized in that a mechanical stepping mechanism is used as the switching mechanism (8, 9, 10). 10. Lifting device according to one of claims 1 to 7, characterized in that an electric drive is used as the switching mechanism. 11. Lifting device according to claim 10, characterized in that the electric drive is designed as a stepper motor. 12. Lifting device according to claim 1, characterized in
that each winding drum (11, 12, 13) can be driven by a separate drive motor (42, 43, 44) acting as a switching mechanism (8, 9, 10) and
that each of the drive motors (42, 43, 44) can be drive-controlled independently of the other drive motors, all drive motors being linked to one another in the correct manner. 13. Lifting device according to claim 12, characterized in that the drive control of the drive motors (42, 43, 44) is carried out by at least one control device (41). 14. Lifting device according to claim 13, characterized in that the control device (41) is programmable. 15. Lifting device according to claim 12 and 13, characterized in that the drive motors (42, 43, 44) are stepping motors. 16. Lifting device according to claim 12 to 14, characterized in that at least the tension member (14) for the ring rail (3) via a deflection roller (19) by means of a rotatable cam (25) pivotable lifting arm (17) to the with the drive motor ( 44) connected, the gradual advancement of the lifting movement causing winding drum (13) is running. 17. Lifting device according to one of the preceding claims, characterized in that the starting position of at least one of the winding drum (11, 12, 13) is adjustable.

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