EP2963164A1 - Open-end spinning machine - Google Patents

Abstract

The invention relates to an open-end spinning device (1) with a spinning rotor whose rotor shaft (4) is supported in a rotor shaft bearing element (9) and acted upon by a rotating machine-tangential tangential belt (7) and the rotor cup during spinning at high speed in a unterdruckbeaufschlagbaren Rotor housing (6) rotates, which can be closed by a cover element (8), which is part of a housing (11) of a sliver disassembling device (12). The rotor shaft bearing element (9) is mounted and connected via a pivot axis (10) to the housing (11) of the sliver disengaging device (12) such that the rotor shaft (4) is displaced into a position when the open-end spinning device (1) is opened, in which he is out of contact with the revolving, machine-long tangential (7). Furthermore, the sliver opening device (12) has a bearing device (2), with which it is pivotally connected to a stationary bearing axis (3). According to the invention, the housing (11) of the sliver opening device (12) and the housing (14) of the bearing device (2) are two separate components made of different materials, wherein the spin-relevant housing (11) of the sliver opening device (12) consists of a Light metal alloy and the housing (14) of the bearing device (2) are made of plastic.

Description

The invention relates to an open-end spinning device with a spinning rotor whose rotor shaft is supported in a rotor shaft bearing element and acted upon by a rotating machine-tangential tangential belt and the rotor cup rotates during spinning at high speed in a rotor housing unterdruckbeaufschlagbaren that can be closed by a cover member, the component a housing of a sliver breaker is. The rotor shaft bearing element is mounted and connected via a pivot axis with the housing of Faserbandauflöseeinrichtung so that the rotor shaft is displaced when opening the open-end spinning device in a position in which it is out of contact with the rotating, machine-long tangential. Furthermore, the sliver opening device has a bearing device, with which it is pivotally connected to a stationary bearing axis.

Open-end spinning devices have long been known in various embodiments in the context of open-end rotor spinning machines.

The numerous open-end spinning devices, which are described in some detail quite extensively in the patent literature, can differ considerably, in particular with regard to their structural design.

By the DE-OS 2,130,688 For example, an open-end spinning device is known which has two separately arranged functional devices. The functional devices are obvious, as usual, even if this is in the DE-OS 2,130,688 is not explicitly mentioned, made of metallic materials. As in particular from Fig.1 of the DE-OS 2,130,688 can be seen, the functional means are each individually and one above the other fixed to a central base frame of an open-end rotor spinning machine and functionally connected to each other by a Faserleitkanal. The above-arranged functional device has the spinning member, that is to say, a spinning rotor revolving at high speed in a rotor housing subjected to negative pressure, which is supported by its rotor shaft in an associated bearing device. In the lower functional device is a rotatable sliver disintegrating device arranged, which is connected via the aforementioned Faserleitkanal with the rotor housing.

In the DE 32 47 411 A1 An open-end spinning device is described in which the various working components of the spinning device are arranged within a special spin box frame, preferably made of stamped sheet metal parts. This spinning box frame can in turn be fixed to a central machine frame of the open-end rotor spinning machine.

The open-end spinning device has a spinning rotor, which is supported with its rotor shaft on a support disk bearing and whose rotor cup rotates during the spinning process at high speed in a closable by a cover element, underdruckbeaufschlagbaren rotor housing. The rotor shaft of the spinning rotor is acted upon during the spinning process by a machine-tangential belt which simultaneously drives all the spinning rotors of a machine side of the open-end rotor spinning machine.

As already indicated above, both the support disk bearing and the rotor housing are mounted in a spinning box frame, in which also a so-called pivot housing is mounted. In the swivel housing, which is connected via a two-part Faserleitkanal with the rotor housing, a sliver disintegrating device is integrated. That is, a first part of the Faserleitkanals is disposed within the pivot housing, while the second part of the Faserleitkanals part of a so-called channel plate, which in turn is arranged in a cover member which is connected via a pivot axis pivotally connected to the spinning box frame.

In addition, a sliver-opening roller and a sliver-picking cylinder are rotatably supported in the swivel housing of the sliver-opening device, wherein the axis of rotation of the sliver-opening roller and the axis of rotation of the sliver-inserting cylinder are positioned slightly inclined relative to the horizontally arranged axis of rotation of the spinning rotor.

Such trained open-end spinning devices have proven themselves in practice, however, are somewhat expensive to manufacture and, since the spinning box frame from punched Sheet metal parts and a large part of the spin box components are made of a light metal alloy, in the production relatively expensive.

Comparable open-end spinning devices, in which, however, during the spinning process, the axis of rotation of the spinning rotor and the axis of rotation of the opening roller are arranged orthogonal to each other, are for example in the DE 23 48 064 C2 described.

In these known open-end spinning devices, the spinning rotor with its rotor shaft is likewise supported in a rotor shaft bearing element, which, however, is generally equipped with a direct bearing device. The rotor shaft bearing element is in turn connected via a pivot axis to the housing of a sliver disassembling device. As is usual, the rotor cup of the spinning rotor, which can be acted upon by a rotating, machine-long tangential belt, revolves at high speed in a rotor housing which can be pressurized with negative pressure, which is preferably part of the rotor shaft bearing element and is closed by a cover element during the spinning operation.

The cover element is usually part of the housing of the sliver disassembling device, which in turn is connected via a bearing device pivotally connected to a stationary bearing axis of the open-end spinning machine.

As in particular from Fig. 1 of the DE 23 48 064 C2 it can be seen in these known open-end spinning devices, the bearing device is part of the housing of the sliver opening device.

The housing of the fiber sliver disassembling device and the rotor shaft bearing element are mounted and interconnected via the pivot axis so that both the rotor shaft of the spinning rotor and the drive whirl of the opening roller rotatably mounted in the sliver opening device are respectively displaced to a position when opening the open-end spinning device, in the they are out of contact with associated rotating machine-tangential belts.

Open-end spinning devices, as used in the DE 23 48 064 C2 have been in use for a long time, but also have the disadvantage that they are due to their structural design, that is, the complex components all made of a light metal alloy, are relatively expensive to manufacture.

Even with these long-known open-end spinning devices, the use of numerous complex, made of a light metal alloy components in terms of manufacturing costs makes a negative impact.

Based on the aforementioned prior art, the present invention seeks to develop an open-end spinning device, which is both reliable and characterized by a long life, but on the other hand is relatively inexpensive to produce.

This object is achieved by an open-end spinning device, as described in claim 1.

Advantageous embodiments of the invention are the subject of the dependent claims.

In the open-end spinning device according to the invention, it is provided that the housing of the sliver disassembling device and the housing of the bearing device are two separate components, which are made of different materials, wherein the housing of the sliver disassembling device are made of a light metal alloy and the housing of the bearing device made of plastic.

Such a design has the particular advantage that the component, which is relatively less stressed during the spinning process, can be produced from a cost-effective, easily moldable material, preferably a plastic, while the component which is subject to some wear during the spinning process, is still made of a relatively abrasion-resistant dimensionally stable material, preferably a light metal alloy.

The production of the housing of the bearing device made of a plastic not only has the advantage that such a bearing housing is relatively easy and inexpensive to manufacture with sufficient strength, but such an embodiment also ensures, similar to the housing made of a light metal alloy Faserbandauflöseeinrichtung that the Storage device is a largely resistant to unfavorable environmental influences construction.

When assembling the open-end spinning device, the two components can then be easily assembled and ensure proper operation and a long life of the open-end spinning device with optimized manufacturing costs.

In an advantageous embodiment, it is provided that the housing of the sliver disintegrating device has an integrally molded cover element.

Such relatively complicated components can be produced relatively easily in the die casting process, in particular if a light metal alloy is used as the casting material. That is, in a proven manner can be easily produce even more complex series parts that are on the one hand after casting already relatively accurate fit and thus require little rework, and on the other hand also have the required wear resistance. In particular, if larger quantities are produced, a sliver disintegrating device with an integrally molded cover element can be produced by die casting at acceptable unit costs.

In this case, it has proved to be particularly advantageous if the housing of the fiber sliver dissolving device is made of an aluminum alloy.

On the one hand, such an aluminum alloy has all the advantages of such light metal alloys, but, on the other hand, is relatively inexpensive in relation to many other light metal alloys, such as, for example, a magnesium alloy.

That is, a housing of the sliver disassembling device, which is made of an aluminum alloy, is largely resistant to unfavorable environmental influences, in particular to extreme humidity.

In a further advantageous embodiment it is provided that on the housing of the sliver disassembling means an upper cover is releasably secured, which consists of plastic and that to the housing of the bearing device releasably connected to a lower cover, which also consists of plastic.

During the spinning process, such a lining not only prevents too fast and excessive contamination of the spinnrelevant components of the open-end spinning device, but also provides an optical enhancement of the invention That is, through the cover ensures that the usually not insignificant burdened with dust particles and fiber residues spinning atmosphere does not affect the spin-relevant components of the open-end spinning devices too negative, with the detachable arrangement of the upper and lower cover is also ensured that, if necessary, both the housing of the sliver breaker and the housing of the storage facility can be easily cleaned.

The sliver disassembling device is so pivotably mounted by means of the housing of the bearing device on a stationary bearing axis, that when opening the open-end spinning device in the Faserbandauflöseeinrichtung rotatably mounted opening roller comes out of contact with an associated tangential.

By such a design is reliably prevented that the opening roller is further driven after opening the open-end spinning device. An open-end spinning device further driven opening roller is known, especially because the rotation of the opening roller is often difficult to see by the operator, for the operator is a significant source of danger, which is reliably switched off with the present embodiment.

In a further advantageous embodiment, it is provided that the axis of rotation of the opening roller rotatably mounted in the sliver opening device has a vertical orientation during the spinning process.

Such, in itself long known storage of the opening roller with vertical axis of rotation has over the widespread storage of the opening roller with almost horizontal rotation axis has the advantage that the feed of the combed out by the opening roller individual fibers is facilitated or improved in a spinning rotor.

Preferably, the sliver disassembling device also has a sliver intake cylinder, which is equipped with a single drive.

With such a single-motor driven sliver-picking cylinder, in particular, the piecing process necessary after a winding interruption can be optimized and thus the quality of the piecings to be produced can be markedly improved.

As a single drive for the sliver picking cylinder is preferably a stepper motor is used.

Such stepper motors are in the textile machinery industry often proven drives, which are characterized in particular by the fact that they are relatively easy to control very precisely.

As is known per se, the rotor housing is part of a rotor shaft bearing element and is pivoted when opening the open-end spinning device in a position in which the rotor housing from the front is easily accessible. That is, in this position, the open rotor housing is tilted slightly backwards with its upper edge, so that the spinning rotor for the operating personnel is manageable.

The spinning rotor can thus be easily cleaned in this position of the rotor housing or easily replaced if necessary.

In an advantageous embodiment, the rotor shaft bearing device is equipped with a so-called direct storage, in which the rotor shaft of the spinning rotor is rotatably supported in rolling bearings.

Although with such a direct storage of the spinning rotor can not quite realize the extremely high speeds of a support disk storage, however, such direct bearings represent in practice proven constructions, which are also relatively inexpensive. Such direct bearings for spinning rotors are also characterized by their relative insensitivity to difficult environmental conditions.

Furthermore, the single drive of the sliver feed cylinder on a plug which is positioned in the assembled state of fiber sliver disengaging device and storage device so that the single drive is ready for operation.

That is, the plug of the drive of the sliver drawing-in cylinder, which is preferably formed as a stepping motor, is automatically joined when the sliver-opening device and the storage device are assembled, or automatically separated, when the sliver-opening device and the storage device are disassembled.

In the assembled state, the drive of the sliver feed cylinder can be properly supplied with the necessary electrical energy.

Further details of the invention are shown in an embodiment shown below with reference to the drawings.

Fig. 1

in perspektivischen Vorderansicht eine erfindungsgemäße Offenend-Spinnvorrichtung,

Fig. 2

die Offenend-Spinnvorrichtung gemäß Fig.1 in perspektivischer Rückansicht,

Fig. 3

in perspektivischer Vorderansicht eine Explosionszeichnug der erfindungsgemäßen Offenend-Spinnvorrichtung, mit dem Gehäuse der Faserbandauflöseeinrichtung, dem Gehäuse der Lagereinrichtung sowie dem Schrittmotor des Faderbandeinzugszylinders,

Fig. 4

schematisch den Stecker des Einzelantriebes des Faderbandeinzugszylinders.

It shows:

Fig. 1

in perspective front view of an open-end spinning device according to the invention,

Fig. 2

the open-end spinning device according to Fig.1 in perspective rear view,

Fig. 3

in perspective front view of an exploded view of the open-end spinning device according to the invention, with the housing of the sliver disassembling device, the housing of the storage device and the stepper motor of Faderbandeinzugszylinders,

Fig. 4

schematically the plug of the single drive of the Faderbandeinzugszylinders.

The FIG. 1 shows in perspective front view of an open-end spinning device 1, as it is respectively arranged in the region of a workstation of an open-end rotor spinning machine.

The open-end spinning device 1 is mounted on its bearing device 2 on a stationary, usually machine-length bearing axis 3 pivotally limited.

In the exemplary embodiment, the spinning rotor not shown in detail for reasons of clarity is rotatably mounted with its rotor shaft 4 in a direct bearing device 5 and is driven by a rotating, machine-long tangential belt 7, to which the rotor shaft 4 abuts from below.

Like from the FIG. 1 can be seen, the rotor housing 6, in which the spinning cup of the spinning rotor rotates during the spinning process at high speed, by a Cover element 8 or closed by a sealing element integrated in the cover element 8.

In the exemplary embodiment, the direct bearing device 5 and the rotor housing 6 form a rotor shaft bearing element 9, which is connected via a pivot axis 10 to the housing 11 of a sliver opening device 12.

When the open-end spinning device 1 is closed, the rotor shaft bearing element 9 is positioned such that the rotor shaft 4 abuts the machine-length, circumferential tangential belt 7 from below in the operating position, as shown in the figures.

In contrast, when the open-end spinning device 1 is open (not shown), the rotor shaft bearing element 9 is positioned in an inoperative position.

In this inoperative position is a brake element 13 on the rotor shaft 4, which is positioned at a distance from the machine-length, further circulating tangential belt 7.

At the preferably made of an aluminum alloy housing 11 of the sliver disassembling device 12 is fastened by means of bolts or the like from below a made of plastic housing 14 of a bearing device 2, via which the open-end spinning device 1 is connected to the stationary bearing axis 3 limited.

In the housing 11 of the sliver opening device 12, as usual, rotatably mounted an opening roller 17 which is driven during the spinning operation by a machine-length (not shown) tangential.

Furthermore, a so-called sliver feed cylinder 18 is rotatably mounted in the housing 11. The drive of the sliver feed cylinder 18 takes place in the embodiment via a (not shown) single drive 19, for example a stepper motor. The axes of rotation 20, 21 of the opening roller 17 and the sliver feed-in cylinder 18 are arranged orthogonally to the axis of rotation of the spinning rotor during the spinning process.

As further shown, a lower cover 15 is also secured to the housing 14 of the bearing device 2, which in conjunction with an upper cover 16 (FIG. Fig.2 ) is to prevent too fast and excessive contamination of the open-end spinning device 1.

The FIG. 2 shows the above with reference to the Fig.1 Open-end spinning device 1 described in perspective rear view.

As related to the Fig. 1 already described and described, the spinning rotor of the open-end spinning device 1 is driven in the operating state by a rotating machine-long tangential belt 7, on which the spinning rotor rests with its rotor shaft 4 from below.

The housing 11 of the sliver opening device 12 of the open-end spinning device 1 is arranged on the housing 14 of the bearing device 2 limitedly movable on the stationary bearing axis 3. In addition, the housing 11 of the sliver opening device 12 has an upper cover 16 which, in conjunction with a lower cover 15, prevents over-soiling of the open-end spinning device 1.

To the housing 11 of the sliver opening device 12, the rotor shaft bearing element 9 is connected via a pivot axis 10, which includes the direct bearing device 5 for the spinning rotor and the rotor housing 6 for the rotor cup.

The Figure 3 shows in an exploded view at the top of a light metal alloy, preferably made of an aluminum alloy, manufactured housing 11 of the sliver disassembling device 12, in the middle made of plastic housing 14 a storage device 2 and below the single drive 19 a sliver 18 to the housing 11 Faserbandauflöseeinrichtung 12th , which, as is known, a receptacle for an opening roller 17 and a receptacle for a sliver feed cylinder 18, integrally formed a cover member 8, with which the rotor housing 6 is covered during the spinning operation.

In Fig. 4 schematically, a plug 22 is shown, via which the individual drive 19 of the sliver feed cylinder 18 is supplied with electrical energy.

As indicated, the plug 22 is formed so that it is closed when the housing 11 of the sliver breaker 12 and the housing 14 of the storage device 2 are joined together.

Function of the spinning device:

If, for example, the open-end spinning device 1 is to be cleaned after a thread break and has to be opened, the housing 11 of the sliver opening device 11, as in FIG Fig. 2 shown, pivoted in the direction S down. In this opening of the open-end spinning device 1, on the one hand, the drive whirlwind of the opening roller 17 is immediately disengaged from an associated, further circulating tangential belt and is braked to a standstill, for example, at a stationary opening roller brake (not shown) or the opening roller 17 runs unrestrained to a standstill out.

At the same time, the rotor shaft bearing element 9 connected via the pivot axis 10 to the housing 11 of the sliver opening device 11 is pivoted into an inoperative position from an operating position in which the rotor shaft 4 bears against a machine-length, circumferential tangential belt 7 from below.

That is, during pivoting of the rotor shaft bearing element 9, the rotatably mounted in a direct bearing device 5 rotor shaft 4 of the spinning rotor is positioned in a position in which the rotor shaft 4 is out of contact with the rotating machine-tangential belt 7.

When the rotor shaft bearing element 9 is pivoted, a brake element 13 arranged on the rotor shaft bearing element 9 also runs against a stationary switching element, whereby the brake element 13 is pressed against the rotor shaft 4 and the spinning rotor, which initially rotates at high speed, is immediately braked to a standstill. Subsequently, for example, the spinning cup of the spinning rotor can be cleaned easily or, if necessary, the spinning rotor can be changed.

After completion of the spinning rotor cleaning, the housing 11 of the sliver opening device 12 is again folded upwards while the drive whirler of the opening roller 17 is again applied from the front to a tangential belt still circulating at operating speed, whereupon the opening roller 17 immediately returns to its position Operating speed is accelerated.

When swiveling up the housing 11 of the sliver opening device 12, the pivotally mounted rotor shaft bearing element 9 is also tilted slightly forward over the pivot axis 10. That is, the rotor shaft bearing element 9 and the integrally connected rotor housing 6 pivot back into their operating position, in which the rotatably mounted in the direct bearing device 5 spinning rotor with its rotor shaft 4 again abuts the bottom of the rotating tangential belt 7 and is accelerated by this immediately to operating speed and the rotor housing 6 is closed by the cover member 8.

The open-end spinning device 1 is then again ready for Neuanspinnen, which can be done semi-automatically, for example.

Claims (12)

Open-end spinning device (1) with a spinning rotor whose rotor shaft (4) is supported in a rotor shaft bearing element (9) and acted upon by a circumferential, machine-tangential tangential belt (7) and the rotor cup during spinning at high speed in a rotor housing (6) which can be closed by a cover element (8) which is part of a housing (11) of a fiber sliver disassembling device (12), the rotor shaft bearing element (9) being mounted and thus via a pivot axis (10) with the housing (11) of the sliver disintegrating device (12) that the rotor shaft (4) is displaced during opening of the open-end spinning device (1) in a position in which it is out of contact with the revolving machine-tangential belt (7), and that the sliver disengaging device (12) has a bearing device (2), via which it is pivotally connected to a stationary bearing axis (3) i st,
characterized,
in that the housing (11) of the fiber sliver disassembling device (12) and a housing (14) of the bearing device (2) are formed as two separate components made of different materials, wherein the spinnrelevante housing (11) of the sliver disassembling device (12) made of a light metal alloy and the housing (14) of the bearing device (2) are made of a plastic. Open-end spinning device according to claim 1, characterized in that the housing (11) of the sliver opening device (12) has an integrally formed cover element (8). Open-end spinning device according to claim 1, characterized in that the housing (11) of the sliver disintegrating device (12) is made of an aluminum alloy. Open-end spinning device according to claim 1, characterized in that on the housing (11) of the sliver opening device (12) detachably an upper cover (16) is fixed, which consists of plastic. Open-end spinning device according to claim 1, characterized in that on the bearing housing (14) of the bearing device (2) releasably a lower cover (15) is attached, which consists of plastic. Open-end spinning device according to claim 1, characterized in that the sliver opening device (12) via the housing (14) of the bearing device (2) is pivotally mounted on the stationary bearing axis (3) that when opening the open-end spinning device (1) a in the sliver disintegrator (12) rotatably mounted sliver pick-up roller (17) comes out of contact with an associated tangential belt. Open-end spinning device according to claim 6, characterized in that the axis of rotation (20) of the sliver-opening roller (17) rotatably mounted in the sliver-opening device (12) has a vertical orientation during the spinning operation. Open-end spinning device according to claim 1, characterized in that the fiber sliver disengaging device (12) has a sliver intake cylinder (18) which can be acted upon by a single drive (19). Open-end spinning device according to claim 8, characterized in that the individual drive (19) is designed as a stepper motor. Open-end spinning device according to claim 1, characterized in that the rotor housing (6) is part of the rotor shaft bearing element (9) and is pivoted when opening the open-end spinning device (1) in a position in which the rotor housing (6) is accessible from the front , Open-end spinning device according to claim 1, characterized in that the rotor shaft bearing element (9) is equipped with a so-called direct bearing device, in which the rotor shaft (4) of the spinning rotor is supported in rolling bearings. Open-end spinning device according to claim 8, characterized in that the individual drive (19) of the sliver feed cylinder (18) has a plug (21) which is positioned in the assembled state of fiber sliver disengaging means (12) and bearing means (2) such that the single drive (19 ) is ready for operation.

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