EP2142458A1

EP2142458A1 - Paraffin-treatment device for a workstation on a textile machine producing cross-wound bobbins

Info

Publication number: EP2142458A1
Application number: EP08716328A
Authority: EP
Inventors: Dietmar Engelhardt
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2007-04-21
Filing date: 2008-03-07
Publication date: 2010-01-13
Anticipated expiration: 2028-03-07
Also published as: DE102007018650A1; CN101657373B; EP2142458B1; WO2008128601A1; CN101657373A

Abstract

The invention relates to a paraffin-treatment device (5) for a workstation (1) on a textile machine producing cross-wound bobbins, having a drive and bearing shaft (13) that can be rotationally moved and on which a paraffin body (14) is supported in a rotationally fixed, but axially displaceable manner, having a receiving opening (23) in the region of the central longitudinal axis (35) thereof. According to the invention, in a first embodiment, the drive and bearing shaft (13) has a bearing region (27) designed such that a paraffin body (14) of a first type can be slid onto it, having a receiving opening (23) having a first cross section (A<SUB>1</SUB>), and that the bearing region (27) of the drive and bearing shaft (13) is expandable in the dimension thereof such that the expanded bearing region (27) can support a paraffin body (14A) of a second type, the receiving opening (23A) thereof having a second cross section (A<SUB>2</SUB>).

Description

Description :

Paraffining device for a workstation of a cheese-producing textile machine

The invention relates to a waxing device according to the preamble of claim 1 or claim 7.

Paraffining devices are known in connection with cross-wound textile machines, such as open-end rotor spinning machines, for a long time and described in detail in numerous patents.

Such paraffining devices are used primarily to reduce the coefficient of friction of a yarn. That is, by the paraffin particles applied to the yarn, the running and sliding properties of the yarn can be significantly improved, which is particularly important in subsequent work processes, such as knitting or knitting, of great importance.

In order to achieve the most uniform possible wear of the paraffin body during the paraffin application, the paraffin body is usually slowly rotated about its central longitudinal axis in the known paraffining devices, wherein the running thread simultaneously rests on the front side of the paraffin body.

Paraffining devices which operate on the principle described above are described, for example, in DE 40 10 469 A1. In these known Paraffiniereinrichtungen a paraffin body is rotatably mounted on a rotatable drive and bearing shaft, but axially displaceable, which is acted upon by a rear spring element in the direction of the running thread.

The paraffin body has in the region of its central longitudinal axis on a preferably rectangular receiving opening, via which it can be pushed onto the drive and bearing shaft of the paraffining device.

The working position of the paraffin body, which determines the extent of the paraffin application, can be predetermined by so-called travel limiting means, on which the paraffin body is supported by its front side.

In order to ensure perfect guidance of the paraffin body on the drive and bearing axis of the waxing device, in particular the cross section of the receiving opening of the paraffin body and the cross section of the bearing area of the drive and bearing axis are matched to one another.

In practice, this means that only one particular type of paraffin body, in particular as regards the cross-section of the receiving opening of the paraffin body, can always be used on such a paraffining device.

Comparable paraffining devices are also described in DE 103 54 588 A1.

These known Paraffiniereinrichtungen work with renewable Paraffinkörpern having a receiving opening in the region of its central longitudinal axis, via which the paraffin body in each case rotationally fixed, but axially displaceable on a drive and bearing shaft of the waxing device can be set. The working position of the paraffin body is also specified here by Wegbegrenzungsmittel which are arranged on a stop flap, which can be pivoted away for insertion of a new Paraffinkörpers about a vertical pivot axis. Even with these known paraffining devices, the type of paraffin body, in particular as regards the cross section of the receiving opening of the paraffin body, is predetermined by the design of the drive and bearing axis.

This means that in the known paraffining devices it is especially disadvantageous that only one type of paraffin body, either small or large paraffin bodies, which differ in particular with regard to the cross section of their receiving opening, can be processed with them. If it is desired or necessary to change the paraffin body size, the entire waxing facility must always be replaced.

Based on the aforementioned prior art, the present invention seeks to provide a waxing device which is designed so that different varieties of paraffin bodies, which differ in particular with respect to the cross section of their receiving opening, can be used without problems.

This object is achieved by a waxing device having the features described in claim 1 or by a waxing device according to claim 7.

Advantageous embodiments of the invention are the subject of the dependent claims 2-6 and 8 and 9. The paraffining device according to the invention, with a drive and bearing shaft, whose bearing area is designed so that a Paraffinkörper a first variety can be pushed, which has a receiving opening with a relatively small cross-section, and in which the storage area of the drive and bearing shaft in its dimension is so expandable in that a paraffin body of a second kind can be stored on the extended storage area, the receiving opening of which has a significantly larger cross-section, in particular has the advantage that such paraffining facilities can be changed quickly and easily from one paraffin body location to another paraffin body location.

The size of the cross section of the receiving opening of the paraffin body is not a feature that precludes use.

As set forth in claim 2, it is provided in an advantageous embodiment that special supplementary pieces can be fixed to the bearing area of the drive and bearing shaft of the waxing device.

By using or omitting the supplementary pieces, the cross section of the storage area can be changed and thus relatively easily adapted to the cross section of the receiving opening of the respectively present Paraffinkörpers.

Preferably, the two fixable on the drive and bearing shaft supplements are identical (Anspr.3) and consist, as described in claim 4, each of a planar-like support body with outer web-like bulges and two arranged on the inside of the support body mounting lugs. The attachment lugs, in conjunction with the recesses described in claim 5 in the storage area of the drive and bearing shaft ensure that the supplements are fixed in the installed state safely and in a defined position on the drive and bearing shaft.

The web-like bulges on the support body thereby minimize the contact surface of the paraffin body and thereby ensure that the paraffin body is guided smoothly on the supplementary pieces, so that it is always ensured that the axially movable paraffin body is in its working position.

As described in claim 6, it is also provided in an advantageous embodiment that in each case one of the fastening lugs has a groove-like recess on the end side and the other fastening lug has a web-like projection. In the installed state, the two supplementary pieces are defined in the recesses of the bearing portion of the drive and bearing shaft of the waxing device, that in each case the web-like approach of a arranged on the one side supplement corresponds with the groove-like recess arranged on the opposite side of supplementary piece, resulting in a precise Alignment of the supplements with respect to the drive and bearing shaft leads.

In an alternative embodiment described in claim 7, the paraffining device has a coupling device to which, easily replaceable, drive and bearing shafts are connected, which are formed differently in particular with respect to the dimensioning of their storage area. The storage area of the drive and bearing shaft, which can preferably be connected to the drive device of the waxing device via the positive coupling device, is dimensioned so small, for example, that a paraffin body of a first kind can be displaceably mounted. However, it is also possible to provide a drive and bearing shaft and connect via the coupling device to the drive device of the paraffining device, whose storage area is designed so large that a paraffin body of a second variety can be pushed and properly stored.

This means that also in the alternative embodiment of the paraffining device described in claim 7, optionally different sized paraffin body can be processed if necessary, without major refurbishment measures in the field of paraffining facilities are required.

As further stated in claim 8, the bearing area of the drive and bearing shaft preferably has an x-shaped cross-section.

That is, the storage area of the drive and bearing shaft is formed by four, each offset by 90 ° receiving ribs which support a paraffin body of the first variety in each case slidably in the region of the abutting edges of the preferably rectangular receiving opening of the paraffin body. Such a design of the drive and bearing shaft ensures that the paraffin body is rotatably mounted, but at any time axially displaceable.

In an advantageous embodiment, both the drive and bearing shaft and the supplementary pieces are each made of a plastic and, for example, produced by injection or die casting (Anspr.9). These proven in mass production for a long time manufacturing process allow cost-effective production of the components, especially if they are made as described from a durable plastic.

The invention will be explained in more detail with reference to an embodiment shown in the drawings.

It shows:

1 is a schematic side view of the workstation of an open-end rotor spinning machine with an inventively designed paraffining device,

Fig. 2 in front view an inventively designed

Paraffining device, which is equipped with a paraffin body of small diameter and a relatively small cross-section receiving opening (= paraffin body of a first grade),

3 the paraffining device according to FIG. 2, in plan view,

Fig. 4 is a drive and bearing shaft of

Paraffining device, as used when picking up a paraffin body of the first kind,

Fig. 5 in front view of an inventively designed

Paraffining device, which is equipped with a paraffin body of large diameter and a relatively large in cross-section receiving opening (= paraffin body of a second variety), 6 is an exploded view of a drive and bearing shaft of the waxing device, which is upgraded by additional pieces, for receiving a paraffin body of the second kind,

6A Details of the supplementary pieces of the drive and bearing shaft shown in Figure 6,

7, the drive and bearing shaft according to Figure 6, ready for receiving a paraffin body of the second kind,

8 shows an alternative embodiment of the paraffining device according to the invention, in which, via a coupling device, alternatively differently shaped drive and bearing shafts can be connected to the drive device of the paraffining device.

1 shows schematically a workstation 1 of an open-end rotor spinning machine, in which the paraffining device 5 according to the invention is used. As known per se, such jobs 1 each have an open-end rotor spinning unit 2 for producing a yarn 3 and a winding device 12 for producing a cross-wound bobbin 8.

The thread 3 produced in the open-end rotor spinning unit 2 is pulled out of the spinning unit by means of a thread pulling device 4 that can be driven, for example, by a single motor, and runs on its way to the winding device 12 via a waxing device 5 designed according to the invention.

The winding device 12 has, as also known, a creel 9, a thread-changing device 6 and a cheese drive roller 7. In the present embodiment, a conical cheese 8 is shown, which is rotatably mounted in the coil frame 9, which in turn is connected at least via a pivot axis 10 to the work place housing 11.

A first, advantageous embodiment of a paraffining device 5 designed according to the invention is explained in more detail below with reference to FIGS. 2-7.

2 shows schematically in front view the

Basic version of a first advantageous embodiment of

Paraffining device 5.

That is, the waxing device 5 according to FIG. 2 is equipped with a relatively small paraffin body 14, which for example has a diameter d and, in the present application, also as a paraffin body of a first paraffin body

Variety is called.

As can be seen, this paraffin body 14 is over its

Receiving opening 23, which has a first clear cross-section Ai, rotationally fixed, but axially displaceable, on a rotatably mounted drive and bearing shaft 13 of the

Paraffining device 5 is arranged.

The paraffin body 14 is acted upon by a spring element 15 and a corresponding pressure rod 32 and a pressure plate 33 in the axial direction and is located with its end face 16 on Wegbegrenzungsmitteln 17 at.

This Wegbegrenzungsmittel 17 are fixed to a stopper flap 18 of the waxing device 5 and can be adjusted if necessary in terms of their axial position.

The shape of the Wegbegrenzungsmittel 17 shown in Figure 2, in particular the special, inwardly elongated shape of the holder, thereby enabling a secure axial positioning the relatively small diameter paraffin body 14 of a first kind.

The stop flap 18 is in turn pivotally connected via a vertical axis 19 to the housing 20 of the waxing device 5 and preferably has a thread guide means 22 which forms the starting point for a Fadenchangierdreieck 21.

On the stop flap 18, a snap closure 25 is also arranged, through which the connection flap 18 in the operating position shown in Figures 2, 3 and 5 can be fixed, the stop flap 18 further includes in the region of its upper edge on a horizontally extending thread guide bar 26, on the the running thread 3 slides along during its traversing and thereby guided safely. In order to facilitate the threading of the thread in the thread guide means 22, also lateral Fadenleitbleche or the like can on the stopper flap 18. be provided.

As is indicated in FIG. 3, which shows the waxing device 5 according to FIG. 2 in plan view, the paraffin body 14 is preferably driven via a single drive 28 designed as a stepper motor.

The stepper motor 28 is connected via a gear assembly 35 fixed to the drive and bearing shaft 13 of the waxing device 5 and rotates the drive and bearing shaft 13 during the spinning operation slowly about its central longitudinal axis 24th

On the drive and bearing shaft 13 is also rotatably, but axially displaceable, a pressure plate 33 is arranged, which is connected via a corresponding linkage 32 to a spring element 15. The pressure plate 33 is by the spring element 15 against the back of the Paraffinkörpers 14th pressed, thereby holds the end face 16 of the paraffin body 14 in abutment against the Wegbegrenzungsmitteln 17 and thus in a predetermined position.

That is, the spring element 15 ensures that the

Face 16 of the paraffin body 14 is always in contact with the running thread 3 during the spinning operation, so that it is always uniformly applied with paraffin.

As already indicated above, in the exemplary embodiment according to FIGS. 2 and 3, the waxing device 5 is provided with a

Paraffin body 14 of a first grade equipped.

That is, the one positioned in the paraffining device 5

Paraffin body 14 has, in addition to a relatively small diameter d, also a region arranged in the region of its central longitudinal axis 24

Receiving opening 23, whose light section Ai is relatively small.

Such a relatively small paraffin body 14 of a first

Paraffin body type, rotationally fixed, but axially displaceable, can be set directly on a drive and bearing shaft 13 having the training shown in Figure 4.

The paraffin body 14 is thereby, as the pressure plate 33, pushed directly onto a drive and bearing shaft 13, which has four, each offset by 90 ° receiving ribs 29 in its storage area 27, wherein at least two opposite receiving ribs 29 with recesses 30 and

Stops 31 are equipped.

The stops 31 serve as Wegbegrenzung for the spring-loaded pressure plate 33rd

The function of the recesses 30 will be explained later, in particular in connection with the embodiment of the paraffining device 5 illustrated in the drawings 6 and 7. FIG. 5 shows a front view of a modification of the advantageous embodiment of a paraffining device 5 described above with reference to FIGS. 2-4.

That is, the drive and bearing shaft 13 of the paraffining device 5 has been modified by supplementary pieces 34 such that a paraffin body 14A of a second type can be slid and properly stored on the drive and bearing shaft, now identified by reference numeral 13A.

This means that on the extended by the supplementary pieces 34 bearing portion 27 of the drive and bearing shaft 13A can rotatably, but axially displaceable a paraffin body 14A a second variety are stored, both with respect to its diameter D and with respect to the clear cross-section A ₂ its receiving opening 23A is significantly larger than a paraffin body 14 of the first kind described above.

As can be seen in particular from FIGS. 6, 6A and 7, the modified drive and support shaft 13A differs from an original drive and support shaft 13, in particular by two supplementary pieces 34 which can be fixed to the drive and support shaft 13. The supplementary pieces 34 each consist of a support body 36 which is provided on its outside with lateral, web-like bulges 37 and two fastening lugs 38 which are arranged on the inside of the support body 36.

One of the attachment lugs 38 has, as shown in Figure 6A, a groove-like recess 39, while the other attachment lug is provided with a web-like projection 40. In the joined state of the drive and bearing shaft 13A, which is shown in FIG. 7, the two supplementary pieces 34 each cover one of the receiving ribs 29 of the drive and bearing shaft 13 with their attachment lugs 38 and engage in one of the recesses 30 in the storage area 27 the drive and bearing shaft 13 are arranged.

The supplementary pieces 34 are thereby positioned so that in each case a fastening lug 38 with a groove-like recess 39 corresponds to a fastening lug 38 of an opposite supplementary piece 34, which is provided with a web-like projection 40.

In this joining state, a thrust washer 33A is slidably guided on the supplementary pieces 34 of the drive and bearing shaft 13A, which has a central receiving opening 41 whose light cross section is matched to the cross section of the drive and bearing shaft 13A.

The receiving opening 41 is also provided with guide lugs 42 which correspond to receiving ribs 29 of the drive and support shaft 13 and in conjunction with the stops 31 prevent the pressure plate 33A by the spring member 15 via the pressure linkage 32 forward of the drive and bearing shaft 13A can be pushed.

On the thus modified drive and bearing shaft 13A, a paraffin body 14A of the second kind can be easily and safely positioned, which is rotatably supported with its receiving opening 23A, but axially displaceable on the web-like bulges 37 of the supplementary pieces 34.

FIG. 8 shows an alternative embodiment of the paraffining device 5 according to the invention. The paraffining device 5 is equipped in the region of its drive device with a coupling device 50, on which, preferably a positive fit, one each Drive and bearing shaft 13 B and a drive and bearing shaft 13 C can be fixed.

As indicated in FIG. 8, the coupling device 50 preferably has a socket-like connection body 55 with a rectangular receptacle 52, into which a permanent magnet insert 51 is embedded.

The associated drive and bearing shafts 13B and 13C, which differ substantially in terms of their dimensions, in particular with respect to the cross section of their storage area 27, have a, in cross section also rectangular shaped coupling stub 53, in the installed state of the drive and bearing shafts 13B and 13C corresponds to the receptacle 52 in the connection body 55 of the coupling device 50 in a form-fitting manner.

Since the drive and bearing shafts 13B and 13C is usually made of a non-ferromagnetic material, for example a plastic, a magnetizable element 54 is preferably integrated into the coupling stub 53, which in conjunction with the permanent magnet insert 51 in the receptacle 52 ensures this in that the drive and bearing shafts 13B or 13C are properly fixed in the coupling device 50 during operation.

Claims

Claims:

1. Paraffining device (5) for a workstation (1) of a cross-wound textile machine with a rotationally acted upon drive and bearing shaft (13) on the rotationally fixed, but axially displaceable paraffin body (14) is mounted, in the region of its central longitudinal axis (35 ) has a receiving opening (23),

characterized,

in that the drive and bearing shaft (13) has a bearing region (27) which is designed so that a paraffin body (14) of a first type can be pushed, which has a receiving opening (23) with a first cross section (Ai) and in that Storage area (27) of the drive and bearing shaft (13) in its dimension is expandable so that on the extended storage area (27) a paraffin body (14A) of a second kind is storable, the receiving opening (23A) has a second cross-section (A ₂ ) having.

2. Paraffining device according to claim 1, characterized in that on the storage area (27) of the drive and bearing shaft (13) supplementary pieces (34) can be fixed, by means of the cross section of the storage area (27) to the size of the receiving opening (23A) of a Paraffinkörpers (14A) of the second variety is customizable.

3. Paraffining device according to claim 2, characterized in that on the drive and bearing shaft (13) two identically designed supplementary pieces (34) can be fixed.

4. Paraffining device according to claim 3, characterized in that each of the supplementary pieces (34) has a planar-like support body (36) with outer web-like bulges (37) and two on the inside of the support body (36) arranged fastening lugs (38).

5. Paraffining device according to claim 4, characterized in that in the installed state of a supplementary piece (34) whose two attachment lugs (38) are positioned in recesses (30) on the drive and bearing shaft (13).

6. waxing device according to claim 4, characterized in that in each case one of the fastening lugs (38) has a groove-like recess (39) and the other fastening web (38) has a web-like projection (40).

7. Paraffining device (5) for a workstation (1) of a cheese-producing textile machine with a rotationally acted upon drive and bearing shaft (13) on the rotationally fixed, but axially displaceable paraffin body (14) is mounted, in the region of its central longitudinal axis (35 ) has a receiving opening (23),

characterized, in that the paraffining device (5) has a coupling device (50) to which a drive and bearing shaft (13B or 13C) can be interchangeably connected, wherein the bearing regions (27) of the drive and bearing shafts (13B or 13C), which are connected to slidably receiving paraffin bodies (14) serve a first variety or a second variety, each having a different dimensions.

8. Paraffining device according to one of the preceding claims, characterized in that the bearing region (27) of the drive and bearing shaft (13, 13 B, 13 C) each have an x-shaped cross-section with four, each offset by 90 ° arranged receiving ribs (29). having.

9. Paraffining device according to one of the preceding claims, characterized in that the drive and bearing shaft (13, 13 B, 13 C) and the supplementary pieces (34) are each made of a plastic and manufactured by injection or die casting.