DE2311975B1

DE2311975B1 - Open end spinning cup shaft drive - with toggle lever belt pulley tripping device

Info

Publication number: DE2311975B1
Application number: DE2311975A
Authority: DE
Inventors: Wilhelm 7317 Wendlingen Braun; Dieter Dipl.-Ing. 7025 Plattenhardt Pfeifle
Original assignee: SKF Kugellagerfabriken GmbH
Current assignee: SKF GmbH
Priority date: 1973-03-10
Filing date: 1973-03-10
Publication date: 1974-09-05
Also published as: DE2311975A1

Abstract

Open-end spinning cup shaft drive includes a support plate arranged for co-axial pivoting about the shaft and supporting >=3 shaft supporting rollers one of which is driven by a belt and the support plate is associated with a toggle lever which trips the driven roller out of contact with the belt. Actuation of toggle lever in opposite direction engages the roller with the belt.

Description

Die Anlage der Achse 16 an den Stützringen 14 und 15 bewirkt eine Stützrolle 17, die in gleicher Weise wie die Stützrollen 12 und 13 mit zwei an der Achse 16 anliegenden Stützringen 18 versehen ist. In der Draufsicht (F i g. 1, 2) überschneiden sich die Stützringe 18 mit den Stützringen 15 der Stützrolle 13. Die F i g. 3 läßt aber erkennen, daß die Stützringe 15 und 18, in gleicher Weise wie die Stützringe 14 und 15, einen gegenseitige Berührung ausschließenden axialen Abstand voneinander haben. Die Stützrolle 17 lagert an einer Achse 19, die auf einem Lenker 20 befestigt ist, der seinerseits schwenkbar in einem Lager 21 auf dem Trä- The abutment of the axis 16 on the support rings 14 and 15 causes a Support roller 17, which in the same way as the support rollers 12 and 13 with two on the Axis 16 adjacent support rings 18 is provided. In the top view (Fig. 1, 2) overlap the support rings 18 with the support rings 15 of the support roller 13. The F i g. 3 shows, however, that the support rings 15 and 18, in the same way as the support rings 14 and 15, a mutual contact excluding axial distance have from each other. The support roller 17 is mounted on an axle 19 on a handlebar 20 is attached, which in turn is pivotable in a bearing 21 on the carrier

ger 9 gehalten ist. Eine um das Lager 21 geschlungene Feder 22, die mit einem Ende an einem am Träger 9 und mit dem anderen Ende an einem am Lenker 20 befestigten Anschlagstift anliegt, hat das Bestreben, den Lenker 20 im Uhrzeigersinn um sein Lager 21 zu schwenken, die Stützrolle 17 also an die Achse 16 zu drücken. Durch Angriff am durch einen Durchbruch der Wand 5 herausragenden Steliarm 23 des Lenkers 20 kann dieser entgegen der Kraft der Feder 22 so weit geschwenkt werden, daß ein Einsetzen und Lösen der Achse 16 in die und aus der Halterung zwischen den Stützrollen möglich ist In einem Sackloch im Träger 9, dessen Längsachse senkrecht zur Achse des Schwenklagers 8 und in Richtung auf diese hin verläuft, ist eine Feder 24 eingesetzt.ger 9 is held. A spring 22 wound around the bearing 21, which with one end on one on the support 9 and with the other end on one on the handlebar 20 attached stop pin rests, tends to move the handlebar 20 clockwise in order to pivot its bearing 21, that is to say to press the support roller 17 against the axle 16. By attacking the protruding through a breakthrough in the wall 5 Steliarm 23 des Handlebar 20, this can be pivoted against the force of spring 22 so far, that an insertion and removal of the axis 16 in and out of the holder between the Support rollers are possible in a blind hole in the carrier 9, the longitudinal axis of which is perpendicular runs towards the axis of the pivot bearing 8 and in the direction towards it, is a spring 24 used.

Die Feder 24 liegt am kugelförmigen Lager 25 eines Schwenkhebels 26 an, der um ein im Boden 3 befestigtes Lager 27 schwenkbar ist, durch einen Durchbruch der Wand 5 aus dem Gehäuse 2 heraussteht und mit einem Griff 28 versehen ist.The spring 24 rests on the spherical bearing 25 of a pivot lever 26 on, which is pivotable about a bearing 27 fixed in the bottom 3, through an opening the wall 5 protrudes from the housing 2 and is provided with a handle 28.

In der in F i g. 1 dargestellten Betriebslage liegt der Schwenkhebel 26 an der den Wanddurchbruch einerseits begrenzenden Kante 29 an. Diese Anlage wird durch die unter Vorspannung am kugelförmigen Lager 25 anliegende Feder 24 erzwungen, und aus dieser Abstützung bei 29, der Lage des Schwenklagers 8 und des Lagers 27 zueinander und wie das in das Sackloch eingreifende Lager 25 an der Feder 24 anliegt, ergibt sich, daß von der Feder 24 auf den Träger 9 ein Drehmoment im Uhrzeigersinne ausgeübt wird. In the in F i g. 1 the operating position shown is the pivot lever 26 on the edge 29 delimiting the wall opening on the one hand. This plant will forced by the spring 24 resting on the spherical bearing 25 under pretension, and from this support at 29, the position of the pivot bearing 8 and the bearing 27 to each other and how the bearing 25 engaging in the blind hole rests against the spring 24, it results that from the spring 24 on the carrier 9 a torque in the clockwise direction is exercised.

Die sich an der Achse 16 abstützende Stützrolle 17 übt bei schwergängigem Turbinenlauf über das Lager 21 ihres Lenkers 20 eine entgegen dem Uhrzeigersinn wirksame Stellkraft auf den Träger 9 aus. Bei entsprechend großer Stellkraft beginnt der Träger 9 um das Schwenklager 8 zu schwenken, wobei, unter Zusammendrücken der Feder 24, der Schwenkhebel 26 mitbewegt wird und sich von der Kante 29 löst. Der Kontakt zwischen dem Antriebsriemen und der Stützrolle 17 besteht vorerst noch weiter. Bei starker Schwergängigkeit oder durch Blockieren der Turbine steigt die Stellkraft so stark an, daß der Träger 9 eine Schwenkstellung erreicht, bei der die Berührungsstelle zwischen dem Lager 25 und der Feder 24 eine Verbindungslinie zwischen dem Schwenklager 8 und dem Lager 27 über- wandert. Die Feder 24, die sich nun entspannen kann, schwenkt dann den Träger 9 und den Schwenkhebel 26 schlagartig in die in F i g. 2 dargestellte Lage, in der der Schwenkhebel 26 an der den Wanddurchbruch andererseits begrenzenden Kante 30 anliegt und der geschwenkte Träger 9 die Stützrolle 17 bis in eine Lage mitbewegt hat, in der sie vom.Antriebsriemen 6 gelöst ist. The supporting roller 17 supported on the axis 16 exercises when the vehicle is stiff Turbine running over the bearing 21 of your link 20 in a counterclockwise direction effective actuating force on the carrier 9. When the actuating force is correspondingly large, it begins the carrier 9 to pivot the pivot bearing 8, wherein, with compression of the Spring 24, which moves the pivot lever 26 along with it and detaches itself from the edge 29. Of the Contact between the drive belt and the support roller 17 still exists for the time being. If the turbine is very difficult to move or if the turbine is blocked, the actuating force increases so strong that the carrier 9 reaches a pivoting position at which the point of contact between the bearing 25 and the spring 24 a connecting line between the pivot bearing 8 and warehouse 27 wanders. The spring 24, which can now relax, pivots then the carrier 9 and the pivot lever 26 abruptly into the position shown in FIG. 2 shown Position in which the pivot lever 26 on the other hand delimiting the wall opening Edge 30 rests and the pivoted carrier 9 supports the support roller 17 up to one position has moved with it, in which it is released vom.Antriebsriemen 6.

Durch manuelles Schwenken des Schwenkhebels 26 können die Teile wieder in die Betriebsstellung gebracht werden. By manually pivoting the pivot lever 26, the parts can again be brought into the operating position.

Die von der Feder 24 aufzubringende, die Stützrolle 17 an den Antriebsriemen 6 pressende Kraft ist so bemessen, daß sie nicht nur den beim Betrieb auftretenden Belastungen genügt, sondern auch für eine stärkere Belastung ausreicht, die dann auftritt, wenn der Antrieb beim Anlauf der Maschine aus dem Stillstand bis zur Betriebs-Drehzahl beschleunigt wird. Soll jedoch ein einzelner Antrieb bei laufender Maschine durch Schwenken des Schwenkhebels 26 in die Betriebsstellung (F i g. 1) gebracht werden, so treten bei der starken Beschleunigung stärkere Kräfte als jene auf, welche die Feder 24 erbringen kann. In diesem Falle ist der Schwenkhebel 26 von Hand so lange festzuhalten, bis die Spinnturbine ihre Betriebs-Drehzahl erreicht hat. The support roller 17 to be applied by the spring 24 to the drive belt 6 pressing force is dimensioned so that it is not only the one that occurs during operation Loads is enough, but is also sufficient for a heavier load, which then occurs when the drive starts up from standstill to operating speed is accelerated. However, if a single drive should run through while the machine is running Pivoting of the pivot lever 26 can be brought into the operating position (FIG. 1), so with the strong acceleration stronger forces appear than those which the Spring 24 can provide. In this case, the pivot lever 26 is so long by hand to be held until the spinning turbine has reached its operating speed.

Eine von der Stützrolle 17 her auf den Träger 9 ausgeübte Stellkraft wirkt am Ort des Lagers 21 auf den Träger 9 ein, also an einer relativ weit vom Schwenklager 8 entfernten Stelle. Wegen des relativ langen Hebelarmes bedarf es deshalb zum Schwenken des Trägers 9 geringerer Stellkräfte als sie dann erforderlich wären, wenn die Achse 19 der Stützrolle 17 in gleicher Weise wie diejenigen der Stützrollen 12 und 13 unmittelbar auf dem Träger 9 befestigt wäre. Aus den Figuren ist deutlich erkennbar, daß dann der Abstand zwischen dem Schwenklager 8 und der Achse 19 kürzer wäre als derjenige, der zwischen dem Schwenklager 8 und dem Lager 21 besteht. An actuating force exerted on the carrier 9 by the support roller 17 acts at the location of the bearing 21 on the carrier 9, so at a relatively far from Pivot bearing 8 remote point. Because of the relatively long lever arm, it is necessary therefore, to pivot the carrier 9, lower actuating forces than then required would be if the axis 19 of the support roller 17 in the same way as those of Support rollers 12 and 13 would be attached directly to the carrier 9. From the figures it can be clearly seen that the distance between the pivot bearing 8 and the Axis 19 would be shorter than that between the pivot bearing 8 and the bearing 21 exists.

Das kugelförmige Lager 25 am Schwenkhebel 26 ist an einem Gewindebolzen 31 ausgebildet, der in den Schwenkhebel 26 eingeschraubt und durch eine Gegenmutter 32 festgelegt ist. Entsprechend der jeweiligen Einschraubstellung des Gewindebolzens 31 ergibt sich eine andere Vorspannung der Feder 24. The spherical bearing 25 on the pivot lever 26 is on a threaded bolt 31 formed, which is screwed into the pivot lever 26 and secured by a lock nut 32 is set. According to the respective screw-in position of the threaded bolt 31 results in a different preload of the spring 24.

Claims

Claims: 1. Spinning turbine drive with the rotatable support rollers bearing axes parallel axis of the spinning turbine and at least one drive belt assigned support roller, d a d u r c h g e - indicates that the support rollers (12, 13, 17) on a coaxially arranged to the axis (16) of the spinning turbine to a limited extent pivotable Carrier (9) are mounted and the carrier (9) is assigned a spring (24) which pushes the carrier (9) together with the support roller (17) towards the drive belt (6) (Fig. 1) and after pivoting the carrier (9) counterclockwise, the support roller (17) detached from the drive belt (6) (FIG. 2).

2. Spinning turbine drive according to claim 1, characterized in that that the support roller (17) in a known manner on a pivotable handlebar (20) is mounted in a on a carrier (9) to the side of the pivot bearing (8) arranged bearing (21) is held (F i g. 1,2).

3. Spinning turbine drive according to claim 1 and 2, characterized in that that the handlebar (20) in a known manner a support roller (17) on the axle (16) the spinning turbine holding spring (22) is assigned (Fig. 1, 2>

4. Spinning turbine drive according to one of claims 1 to 3, characterized in that the link (20) in is provided in a manner known per se with an actuating arm (23)

5. Spinning turbine drive according to one of claims 1 to 4, characterized in that the spring (24) on Carrier (9) and is arranged so as to act as a compression spring on one arm of a pivot lever (26) (Fig. 1,

6. spinning turbine drive according to claim 5, characterized in that the spring (24) is inserted into a blind hole in the carrier (9), the longitudinal axis of which is the axis (16) of the spinning turbine cuts (Fig.

7. spinning turbine drive according to claim 6, characterized in that that as a fixing point for the spring (24) in different screw-in positions in an adjusting lever (26) by a lock nut (32) fixable bearing (25) is used (Fig. 1,2).

In known drive devices (DT-OS 1 901 453; DT-OS 1 901 454; OE-PS 270 459) the spinning turbine axis lies in one between two support rollers existing wedge gap and is supported by a third spring-loaded support roller or held in this position by the drive belt directly lying tangentially on it. In the former case, the drive belt rests on the two support rollers, and he is of a special, adjustable mounted pressure roller, either to the Whorls of the support rollers pushed (operating position) or in one of the whorls not touching position (rest position) out. In the event of malfunctions that make it difficult to move Run the turbine or even cause it to standstill, arises with all known devices a friction between belt, support rollers and turbine axis, which can lead to damage and even the destruction of components.

The invention specified in claim 1 is based on the object weiterzubiiden a drive of the type mentioned in a simple manner so that in the case of sluggishness or a standstill of the turbine caused by malfunctions divided the undesirable friction between components of the drive, so a loosening the drive is carried out by the continuing drive belt.

This object is achieved by the invention mentioned in claim 1. In contrast to the familiar, the spinning turbine and support rollers are on together a carrier arranged coaxially to the spinning turbine axis in an operating and a disengagement is pivotable and supported by a single spring in both one as well as in the other position is held, the spring arrangement so met is that the spring force is caused by overloading in the operating position Turbine is overcome.

Refinements of the invention are described in the subclaims.

An exemplary embodiment of the invention is illustrated with reference to FIGS. 1 to 3 explained. It shows F i g. 1 is a plan view of one shown in the operating position Drive, fig. 2 shows the drive in a position released from the drive belt, FIG. 3 shows a side view along the section line 111-111 of FIG.

A large number of the same are next to each other on a machine bench 1 Arranged drives, of which the figures show only one.

With a pot-like housing is referred to, which with its bottom 3 is held in support on the machine bench 1 by screws 4. One from the floor 3 from rising wall 5 essentially encloses the components of the drive. On its side 7 facing a drive belt 6, however, the housing is open.

A plate-shaped carrier 9 is located on the floor 3 around a pivot bearing 8 pivotally mounted, the bearing axles 10 and 11 for two support rollers 12, 13 carries. On each of the support rollers 12 and 13 are two near their upper and lower ends Support rings 14, 15 applied from a material of high wear resistance. In Although the top view overlap the support rings 14 and 15, but they have so large axial distances from each other that they do not touch each other.

The wedge gap existing between them is the bearing point of a Axis 16 of a spinning turbine 160. The support rollers 12 and 13 are thus on the carrier 9 and the diameter of the support rollers 12, 13 and the support rings 14, 15 are chosen so that the axis 16 lying in the wedge gap is coaxial with the pivot bearing 8 of the carrier 9 runs. The axis 16 stands in the axial direction, as shown in FIG. 3 can be seen on a thrust bearing formed on the pivot bearing 8.