EP3073001A1 - Compressor unit - Google Patents

Abstract

A compressor unit (1) for a drafting system of a textile machine has at least one compression channel for a completely distorted fiber structure (6). The compressor unit (1) has a holder (8) and at least two wear-resistant components (4), which are connected to the holder (8), and the at least two wear-resistant components (4 ', 4 ") each have at least one bearing surface (15 ) for a drafting roller (2) and a compression channel (13) for the fiber structure (6), wherein the wear-resistant components (4 ', 4 ") are arranged on the holder (8) in such a way that they extend in the axial direction of the drafting roller 2) are spaced from each other. The holder (8) has at least one receptacle (14) for one of the wear-resistant components (4 ') in which the wear-resistant components (4') are glued to the holder and the receptacle (14) is one, in particular in the radial direction for the drafting roller (2), open pocket (14 ').

Description

The invention relates to a compressor unit for a drafting system of a textile machine, comprising at least one compression channel for a finished warped fiber structure, wherein the compressor unit comprises a holder and at least two wear-resistant components, which are connected to the holder and the at least two wear-resistant components each have at least one support surface for a drafting roller and a compression channel for the fiber structure, wherein the wear-resistant components are arranged on the holder, that they are spaced apart in the axial direction of the drafting roller.

From the EP 2 314 743 A1 is a pressure roller assembly for a drafting of a textile machine known. The printing roll unit has a base body and two non-contacting pressure roller twins received in the base body. The printing roll unit further has a compressor unit, which is attached to a holder. The compressor unit is arranged freely movable on the base body. On the compressor unit wear-resistant components are fixed, which serves on the one hand for a suitable Auflagerung the compressor unit on a drafting roller and on the other hand for the compression of a supplied from a front arranged drafting fiber assembly.

The compressor unit has two wear-resistant components which come into contact with the fiber structure. The first wear-resistant component is used for guiding and for easy compression of the fiber structure. The second wear-resistant component has a compression channel which strongly compacts the fiber structure and thus serves to improve the subsequent spinning of the fiber structure following the compressor unit to form a yarn.

A disadvantage of the known compressor units is that the wear-resistant components sit with their wear-resistant surfaces on the drafting roller. It is therefore necessary that a very accurate production of the two wear-resistant components must be made to ensure that both bearing surfaces, which are generally curved according to the scope of the drafting roller, flush with the drafting roller. If necessary, they must be adjusted and adjusted to ensure that there is no impermissibly large gap between the wear-resistant components and the drafting roller in which fibers of the fiber structure could penetrate.

Object of the present invention is thus to provide a compressor unit, which is inexpensive to manufacture and moreover to effect the compression of a located on a drafting roller and guided by the compressor unit and compacted fiber structure error-free.

The object is achieved with a compressor unit having the features of claim 1.

A compression device according to the invention for a drafting system of a textile machine has at least one compression channel for a completely warped fiber structure. The finished warped fiber structure is fed from a drafting unit located in front of the compressor unit to the compressor unit. The compressor unit has a holder and at least two wear-resistant components. The two wear-resistant components are firmly connected to the holder. The wear-resistant components have a support surface for a drafting roller and a compression channel for the fiber structure. The compressor unit is supported by the wear-resistant component and its bearing surface on the drafting roller. The wear-resistant components are arranged on the holder so that they are spaced apart in the axial direction of the drafting roller. The wear-resistant Component has a compression channel for the fiber structure. On the holder further wear-resistant components can be arranged. A first wear-resistant component leads the fiber structure on the drafting roller and passes it to the subsequent second wear-resistant component. The second wear-resistant component with its compression channel compacts the fiber structure, usually characterized in that the fiber structure is compressed compactly by being deflected laterally and is thereby pressed against a side wall of the compression channel. As a result of this compression of the fiber structure, a very high-quality yarn, for example by means of a ring spinning spindle, can subsequently be produced.

According to the invention, the holder has at least one receptacle for one of the wear-resistant components, in which the wear-resistant component is adhesively bonded to the holder. The receptacle is a, in particular in the radial direction to the drafting roller, open pocket. The wear-resistant component is thus inserted in the receptacle or pocket. In this way, the two spaced apart in the axial direction of the drafting roller wear-resistant components aligned with each other and fixed by the adhesive.

If the upper guide surface of the first wear-resistant component is a wear-resistant pin, which can press on the fiber structure from above to guide the fiber structure and has no contact with the drafting roller. As a result, it is not necessary for this second wear-resistant component to be assigned exactly to the drafting roller with respect to its circumference. The assignment can be made via adjustable elements or via wear-resistant components, which bring the first wear-resistant component in the correct position to the fiber structure. The first wear-resistant component, which is arranged on the holder, presses the fiber structure from above onto the drafting roller. The fiber structure is thus already compressed by the first wear-resistant component between this component and the drafting roller. It creates a narrow opening between the first wear-resistant component and the drafting roller, through which passes the fiber structure and undergoes a first compaction. The second, much stronger compaction is applied to the fiber structure by the second wear-resistant component, which has a compression channel in which the fiber structure is compressed much more.

The fact that the first wear-resistant component is not seated directly on the drafting roller, adaptation of the wear-resistant component to the drafting roller is not directly required, creating a much cheaper production of the entire compressor unit is possible, while precise compression of the fiber structure.

In a particularly preferred embodiment of the invention, the wear-resistant components glued in the pocket are positioned in alignment with the other wear-resistant component of the holder, which carries a parallel fiber structure and which rests on the same drafting roller. By means of the design according to the invention, it is possible that, for mounting the wear-resistant component, the two aligned components are placed on a roller simulating the drafting roller and at least one of them, preferably also both wear-resistant components, are adhesively bonded to the holder. As a result, a very precise alignment and attachment of the wear-resistant components is achieved on the holder. The fiber structure can thereby be performed very well without fibers can penetrate into the gap between the drafting roller and the wear-resistant components.

In an advantageous embodiment of the invention, the compressor unit in each case two first and second wear-resistant components for two juxtaposed fiber composites. Thus, a single compressor unit for two parallel drafting and spinning stations can be used, which further reduces costs.

Does the compressor unit in the region of the first wear-resistant component on a particular lateral guide with lateral guide surfaces for the fiber structure and a support surface for a drafting roller, so the fiber strand is guided on all four sides. As a result, the fiber structure can be supplied exactly to the second wear-resistant component and it can already be carried out a first pre-compression of the fiber structure.

It is particularly advantageous if the lateral guide surfaces of the guide for the fiber structure and / or the support surface for the drafting roller in the region of the first wear-resistant component of a less wear-resistant material than the first wear-resistant component, in particular of the same material as the holder ( 8) of the compressor unit itself is made. This less wear-resistant material, which may be plastic, for example, is capable of adapting to the existing metal drafting roller through a targeted wear. As a result, after a short operating time a very dense contact surface with respect to the drafting roller achieved, which prevents fibers from the fiber structure between the support surface and the drafting roller could pinch and thus can lead to contamination and defects in the fiber structure.

If the guide for the fiber structure and the bearing surface for the drafting roller in the region of the first wear-resistant component made in one piece with the compressor unit, a very cost-effective component is created, which is highly suitable for the compaction of the sliver.

Preferably, the second wear-resistant component has a wear-resistant compression channel and a wear-resistant support surface for a drafting roller. The second wear-resistant component acts much more on the fiber structure than does the first wear-resistant component. This also causes higher wear forces due to the constant to the compacting device attacking fiber material, which produce a large amount of wear. Characterized in that the second wear-resistant component is made of wear-resistant material both with respect to the compression channel and with respect to its bearing surface, a particularly long service life of the compressor unit is made possible.

If the wear-resistant compression channel and the wear-resistant contact surface of the second wear-resistant component are produced in one piece, this can in turn result in a cost-effective production and, in addition, a very precise component can be created which can perform the compaction of the fiber assembly properly.

For attachment of one of the two wear-resistant components to the holder, it is advantageous if this material-locking, in particular by an adhesive. By this adhesive, the wear-resistant component is firmly connected to the holder, so that a mobility between the holder and wear-resistant component is excluded.

Additionally or alternatively to a cohesive connection, it is also possible that a subregion of at least one of the wear-resistant components is encapsulated by the material of the holder. This encapsulation can be carried out either by the wear-resistant component being encompassed externally by the material of the holder. Alternatively or additionally, it is also possible that the material of the holder engages in a cavity of the wear-resistant material and from there provides for attachment of the wear-resistant component to the holder.

Finally, it is also possible that a press connection between the holder and at least one of the wear-resistant components is made. This press connection is particularly advantageous in the case of the first wear-resistant component, which is designed as a pin. The pen can be in an opening of the holder are pressed and fixed there in its position.

If the holder has a receptacle according to the invention for at least one of the wear-resistant components, the positioning of the wear-resistant component with respect to the holder is very easily possible and the wear-resistant component can be fixed in this position relative to the holder.

Preferably, the wear-resistant pin is inserted into the receptacle formed as a recess of the holder. The wear-resistant pin can for example be glued or pressed into this recess.

If the receptacle is preferably formed by a pin which protrudes from the holder, the wear-resistant component can be attached to this pin and fixed there, for example by gluing or pressing.

In an advantageous embodiment of the invention, the receptacle is a pocket in which at least one of the wear-resistant components attached, in particular glued. The bag is very well suited for positioning the wear-resistant component on the holder and thus ensures an exact and permanent arrangement of the wear-resistant component.

It is particularly advantageous if the wear-resistant pin of the first wear-resistant component and / or the wear-resistant compression channel and the wear-resistant support surface of the second wear-resistant component are made of steel or ceramic. Steel or ceramic in particular have a particularly high resistance to wear compared to the fiber structure and the drafting roller. In addition, a steel or ceramic bearing surface of the second wear-resistant component is also wear-resistant with respect to the drafting roller made of steel, so that overall a particularly durable component is created.

If the compressor unit has at least one receptacle for a loading element for generating a bearing force on the bearing surfaces, then the compressor unit is pressed sufficiently firmly against the drafting roller, so that no gap arises in which individual fibers of the fiber strand could be drawn.

If the pocket is larger than a pin of the wear-resistant member or holder received in the pocket, the wear-resistant member may be positioned on the holder by placing it inside the pocket so as to provide it in a predetermined manner. that is, with the smallest possible gap rests on the drafting roller.

If the pin at least for the most part, preferably completely enclosed by the bag, so a secure attachment can be effected by the adhesive in the bag.

If a gap between the pocket and the pin received in the pocket filled with adhesive, so it is ensured that the wear-resistant component is glued in the bag in the position provided for the intended use.

Figur 1

eine Seitenansicht auf eine Verdichtereinheit an einer Streckwerkswalze,

Figur 2

einen Schnitt durch ein erstes verschleißfestes Bauteil,

Figur 3

einen Schnitt durch ein zweites verschleißfestes Bauteil,

Figur 4

eine Ansicht von unten auf eine Verdichtereinheit für zwei Faserverbände,

Figur 5

einen Schnitt durch ein weiteres erstes verschleißfestes Bauteil,

Figur 6

einen Schnitt durch ein weiteres zweites verschleißfestes Bauteil,

Figur 7

einen Querschnitt durch das zweite verschleißfeste Bauteil aus Figur 6,

Figur 8

einen Schnitt durch zwei fluchtend angeordnete verschleißfeste Bauteile und

Figur 9

einen Querschnitt durch eines der verschleißfesten Bauteile aus Figur 8.

Further advantages of the invention are described in the following exemplary embodiments. It shows

FIG. 1

a side view of a compressor unit on a drafting roller,

FIG. 2

a section through a first wear-resistant component,

FIG. 3

a section through a second wear-resistant component,

FIG. 4

a view from below of a compressor unit for two fiber composites,

FIG. 5

a section through another first wear-resistant component,

FIG. 6

a section through another second wear-resistant component,

FIG. 7

a cross section through the second wear-resistant component FIG. 6 .

FIG. 8

a section through two aligned wear-resistant components and

FIG. 9

a cross section through one of the wear-resistant components FIG. 8 ,

FIG. 1 shows a side view of a compressor unit 1, which is arranged over a drafting roller 2. The compressor unit 1 has a first wear-resistant component 3 and a second wear-resistant component 4. Between the first wear-resistant component 3 and the second wear-resistant component 4 and after the second wear-resistant component 4, a pressure roller 5 is in each case arranged, which press a fiber structure 6 on the lower drafting roller 2. The pressure rollers 5 are attached to a pressure arm 7, which presses both the pressure rollers 5 and the compressor unit 1 on the drafting roller 2.

The first wear-resistant component 3 and the second wear-resistant component 4 are connected to each other by means of a holder 8. The two wear-resistant components 3 and 4 are fixedly arranged on the holder 8 and can not move relative to the holder 8. On the holder 8, a receptacle 9 is arranged, which cooperates with a loading element 10, which moves the compressor unit 1 movable relative to the pressure arm 7 and thus causes a precise and firm pressing the compressor unit 1 on the drafting roller 2.

In the first wear-resistant component 3, a guide 11 is arranged, which presses the fiber structure 6 to the drafting roller 2. In the guide 11, a wear-resistant component in the form of a pin 12 is arranged. The essential executives for the fiber structure 6 are taken over by this pin 12. The pin 12 is fixed in the holder 8. It consists for example of steel or ceramic, is wear-resistant with respect to the along-sliding chamfers and sits in a recess of the existing plastic holder 8. The first wear-resistant component 3 thus compresses the fiber structure 6 between this pin 12 and the drafting roller. 2

The second wear-resistant component 4 serves to densify the fiber structure 6 and accordingly has a compression channel 13. The second wear-resistant component 4 with the compression channel 13 as well as the pin 12 made of steel or preferably made of ceramic and is connected to the holder 8 such that it is immovably fixed to a pin 14 formed as a receptacle of the holder 8. The second wear-resistant component 4 has, in addition to the compression channel 13, a bearing surface 15, which is formed according to the rounding of the drafting roller 2 and thus rests fed on the drafting roller 2. The first wear-resistant component 3 has no such bearing surface. Here, rather, a support surface 16 is present, which is formed out of the holder 8. The bearing surfaces 15 and 16 are round, so that they can adapt to the drafting roller 2.

In FIG. 2 a section through the first wear-resistant component 3 is shown. This wear-resistant component 3 is formed here in the form of a pin 12. The pin 12 is inserted in a receptacle 17, which is formed as a recess. The pin 12 forms the upper side of the guide 11. The lateral areas the guide 11 with lateral guide surfaces 11 ', 11 "are formed by the holder 8. The fiber structure 6 is guided in this area of the guide 11 shown here in rectangular fashion, after which the higher frictional forces of the fiber composite 6 on the upper side of the guide 11 are to be expected are, according to the invention, the pin 12 is formed of steel or ceramic, so as to effect a permanent, consistent guidance of the fiber structure 6.

In FIG. 3 a section through the second wear-resistant component 4 is shown. Here it can be seen that the holder 8 forms a receptacle 14 in the form of a pin, over which the second wear-resistant component 4 is pushed. The second wear-resistant member 4 is fixed to the holder 8 and the receptacle 14 such that it does not allow movement in relation to the holder 8. In other embodiments, it is also possible that the second wear-resistant component 4 is movably mounted on the holder 8. In the wear-resistant component 4, the compression channel 13 is arranged. Since high frictional forces are to be expected here, the compression channel 13 is made around the wear-resistant material, in particular steel or ceramic.

In FIG. 4 is a bottom view of the compressor unit 1 is shown. The compressor unit 1 is designed as a double-sided component, so that two fiber composites 6, which are spun at adjacent spinning stations, by means of a holder 8, on which two compressor units 1 are arranged, can be operated. With regard to the guidance of the fiber structure 6, it can be seen that a first compression of the fiber structure 6 takes place in the first wear-resistant component 3 with the pin 12, the lateral guide surfaces 11 ', 11 "of the guide 11 and the drafting roller 2. After this first compression of the fiber structure 6, this passes into the compression channel 13 of the second wear-resistant component 4. There, the already precompressed fiber structure 6 at least one side wall of the obliquely to the direction of the fiber strand 6 arranged compression channel 13 pressed and compacted further. This results in a particularly advantageous, dense fiber structure 6, which can then be spun.

FIG. 5 shows a section through another first wear-resistant component 3 and its holder 8. It is similar to the embodiment of FIG. 2 built up. The difference, however, is that the bearing surface 16 is not arranged on both sides of the guide 11. In particular, in cooperation with the second wear-resistant component, which has a two-part support surface 15, hereby a statically determined support of the holder 8 on the drafting roller 2 is ensured. The first lateral guide surface 11 'is therefore designed to be longer than the second lateral guide surface 11 ".

In FIG. 6 is a section through another second wear-resistant component 4 and its holder 8 drawn. The receptacle 14 'is not pin-shaped as in FIG. 3 but formed here in the form of a bag. In the bag, the second wear-resistant member 4, which is adapted in shape to the pocket, can be positioned very well on the holder. An exact and permanent arrangement of the wear-resistant component 4 on the holder 8 is thus secured. The compression channel 13 is located within the second wear-resistant component 4th

FIG. 7 shows a cross section through the second wear-resistant component 4 FIG. 6 at the dot-dashed spot. The pocket-shaped receptacle 14 'in the holder 8 and the second wear-resistant component 4 corresponding thereto can be seen very well therein. The compression channel 13 is indicated by a dashed line. The support surface 15 is integrated into the second wear-resistant component and is curved in order to be able to nestle against the drafting roller 2.

FIG. 8 shows a section through two arranged on a drafting roller 2 wear-resistant components 4 'and 4 ", which are arranged in the holder 8 are. Each of the wear-resistant components 4 'and 4 "is glued into a respective pocket 14' with an adhesive 20 filling a cavity or gap. Each of the wear-resistant components 4 'and 4" has a pin 21 which is held in the pocket 14'. sits and is completely surrounded by it. The pocket 14 'is down, that is in the radial direction of the drafting roller, opened. To assemble the wear-resistant components 4 'and 4 ", adhesive 20 is introduced into the pockets 14' of the holder 8, and then the pins 21 of the wear-resistant components 4 'and 4" are inserted. By bringing the holder 8 into a position opposite to the drafting roller 2, which corresponds to the operating position, the wear-resistant components 4 'and 4 "are aligned with each other and can be permanently fixed in this position by the adhesive 20. In particular, if still attached to the holder two first wear-resistant components 3 are arranged, a very precise alignment of the wear-resistant components 3, 4 'and 4 "to each other and in relation to the drafting roller 2 is achieved. This is particularly important because the wear-resistant components 4 'and 4 "have a wear-resistant support surface 15 which hardly or hardly enters in. A faulty installation would thus inevitably lead to a permanent gap between the wear-resistant support surfaces 15 and the drafting roller 2 Adhesive 20 can accordingly match the position of the two wear-resistant components 4 'and 4 ".

Of course, it would also be possible for only one of the two wear-resistant components 4 'and 4 "to be adhesively bonded in. The other wear-resistant component 4' or 4" can be pressed in or glued in without gaps. The position compensation then takes place only via one of the two wear-resistant components 4 'and 4 "with a thicker adhesive layer.

FIG. 9 shows a cross section through the wear-resistant components 4 'from FIG. 8 , It can also be seen that the gap or the pocket 14 'surrounds the pin 21 and is filled by the adhesive 20. A positioning of the wear-resistant component 4 'is thus possible in any direction. Indeed is also an embodiment conceivable in which the gap is not completely formed around the pin 21 around. So it may also be sufficient if a partial guide between pin 21 and pocket 14 'is present.

The present invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims are also possible as a combination of features, even if they are shown and described in different embodiments. Features of the first wear-resistant component can also be combined with features of the second wear-resistant component and vice versa. Conversely, the bag may be arranged on the holder as shown in the embodiments, also in the wear-resistant component and the pin.

LIST OF REFERENCE NUMBERS

1

compressor unit

2

Drafting system roller

3

first wear-resistant component

4

second wear-resistant component

5

platen

6

fiber structure

7

pressure arm

8th

holder

9

admission

10

loading element

11

guide

12

pen

13

compressing channel

14

admission

15

bearing surface

16

bearing surface

17

admission

20

Glue

21

spigot

Claims (10)

Compressor unit for a drafting system of a textile machine, comprising at least one compression channel for a finished warped fiber structure (6), wherein the compressor unit (1) has a holder (8) and at least two wear-resistant components (4) which are connected to the holder (8) , and the at least two wear-resistant components (4 ', 4 ") each have at least one support surface (15) for a drafting roller (2) and a compression channel (13) for the fiber structure (6), the wear-resistant components (4', 4 ") are arranged on the holder (8) such that they are spaced apart in the axial direction of the drafting roller (2), characterized in that the holder (8) has at least one receptacle (14) for one of the wear-resistant components (4 ') in which the wear-resistant components (4 ') is glued to the holder and that the receptacle (14), in particular in the radial direction to the drafting roller (2), open pocket (14'). Compressor unit according to the preceding claim, characterized in that in the pocket (14 ') glued, wear-resistant components (4') to the other wear-resistant component (4 ") of the holder (8) is positioned in alignment. Compressor unit according to one or more of the preceding claims, characterized in that the compressor unit (1) each having two first and second wear-resistant components (3, 4) for two juxtaposed fiber composites (6). Compressor unit according to one or more of the preceding claims, characterized in that the compressor unit (1) in the region of the first wear-resistant component (3) with a guide (11) having lateral guide surfaces (11 ', 11 ") for the fiber structure (6) and a bearing surface (16) for the drafting roller (2). Compressor unit according to one or more of the preceding claims, characterized in that the second wear-resistant component (4) has a wear-resistant compression channel (13) and a wear-resistant support surface (15) for the drafting roller (2). Compressor unit according to one or more of the preceding claims, characterized in that the wear-resistant compression channel (13) and the wear-resistant support surface (15) of the second wear-resistant component (4) are made in one piece. Compressor unit according to one or more of the preceding claims, characterized in that the wear-resistant compression channel (13) and the wear-resistant support surface (15) of the second wear-resistant component (4) is made of steel or ceramic. Compressor unit according to one or more of the preceding claims, characterized in that the pocket (14 ') is larger than a pin in the pocket (14') of the wear-resistant component (4 ') or the holder (8) to the wear-resistant component (4 ') to be able to position on the holder (8). Compressor unit according to one or more of the preceding claims, characterized in that the pin is at least largely enclosed by the pocket (14 '). Compressor unit according to one or more of the preceding claims, characterized in that a gap between the pocket (14 ') and the pin received in the pocket (14') is filled with adhesive.

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