WO2008046480A1

WO2008046480A1 - Revolving flat card unit for a carding machine

Info

Publication number: WO2008046480A1
Application number: PCT/EP2007/007957
Authority: WO
Inventors: Jürgen Schnitzler
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2006-10-19
Filing date: 2007-09-13
Publication date: 2008-04-24
Also published as: DE102006049342A1; CN101522965A

Abstract

The invention relates to a revolving flat card unit (5) for a carding machine (1) having carding bars (12) which can be fixed on endless drawing means (14) in a readily releasable manner. There is provision according to the invention for it to be possible for the carding bars (12) which are positioned on the drawing means (14) in the work position to be fixed to the drawing means (14) by means of a touch-and-close fastener (30).

Description

Description :

Tilting unit for a card

The invention relates to a traveling lid unit for a card according to the preamble of claim 1.

Such in the textile machinery industry long-known traveling lid assemblies and have a variety of flat bars, which are fixed via end-mounted connection means releasably attached to endless, flexible drive belt. The flat bars also have in the region of their connection means sliding lugs, with which they are performed at least on a portion of their circulation on slides. These slide rails are arranged in particular in the region of the card drum and ensure that the flat bars are guided past the rotating card drum at a predetermined distance and thereby parallelize the fiber material.

Such trained decking units are described for example in DE 39 07 396 C, in EP 0 627 507 A or in EP 1 270 777 A relatively detail.

The traveling deck unit according to DE 39 07 396 C has, for example, drive belts, which are equipped for positive and easily releasable entrainment of the cover elements with, for example, cylindrical pins.

The cylindrical pins of the drive belt correspond in the installed state with corresponding holes arranged endwise in the flat rods.

In such a trained Wanderdeckelaggregaten designed in case of need, although the replacement of the cover elements relatively unproblematic, it has to be designed with such

However, revolving deck aggregates ensure that the

Do not unintentionally detach flat bars from their drive belts.

The traveling deck units according to DE 39 07 396 C have this

Basically a complex and therefore quite expensive sliding on.

That is, in these known decklid units are the

Slideways for the flat bars at least partially around the

Deckelumlenkrollen led around, as this is the only way to prevent the flat bars in the area

Remove cover pulleys from their drive belts.

To avoid these relatively expensive sliding guides has already been proposed to fix the flat bars by means of suitable snap closures releasably attached to the drive belt. In EP 0 627 507 A, a traveling lid unit is accordingly described, in which the drive belts designed as toothed belts have cams arranged in pairs in the area of the connection points of the flat bars. The cams have an undercut, with which they take in the installed state of the flat bars behind two rod-like Gleitansätze the flat bars and thus lock the flat bars releasably to the drive belt. In practice, however, has shown that this way of fixing the flat bars to the drive belt, especially in practice-oriented continuous operation, is not always reliable.

The traveling deck unit known from EP 0 627 507 A was therefore improved to the effect that the snap fasteners were secured by additional locking element.

Although this type of fastening of the flat bars to the drive belt described in EP 1 270 777 A is relatively safe, it has but the disadvantage that the replacement of the flat bars has become much more difficult and thus more expensive. That is, before a flat bar can be removed from the drive belt and replaced by a new flat bar, the locking elements of the snap closures must first be drawn consuming and cumbersome.

New cover rods must be appropriately secured again by these additional locking elements after its installation.

Based on the aforementioned prior art, the present invention seeks to develop a moving lid unit, the flat bars are functionally and safely positioned on the drive belt, the flat bars both securely fixed, as well as easily removable from the drive belt and replaced by new flat bars should be.

This object is achieved by a decklid unit having the features described in claim 1.

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

The embodiment according to the invention, in which the flat bars positioned in working position on the traction means are fixed to the traction means via hook-and-loop fasteners, has the particular advantage that it is possible to dispense with an elaborate sliding guide in the area of the cover deflection rollers as well as additional locking elements for securing the connection means. That is, the inventive design represents a reliable construction, which is characterized by a very good price / performance ratio.

As stated in claims 2 and 3, the traction means are preferably designed as flexible toothed belts or roller chains.

Timing belts are characterized in particular by a low

Weight and a smooth run, while roller chains, for example, their very long life speaks.

As described in claim 4, each hook-and-loop fastener each consists of two closure partners which positively correspond with one another.

One of the closure partners is determined on the flat bar, while the associated closure partner is arranged on the traction means. In the assembled state, the closure partners form very insensitive units, which are largely insensitive to unintentional loosening and therefore ensure that the flat bars are securely fixed to the traction means during operation.

In accordance with claim 5, the closure partners are preferably in each case via an adhesive bond on the associated carrier, that is, the flat bar or the traction means set.

The high quality of today's industrial adhesives ensures a secure connection among all operating and

Environmental conditions also in continuous operation of the device.

As adhesives for fixing the closure partner, for example, acrylate adhesives or rubber pressure-sensitive adhesive for

Use come.

Acrylate adhesive is characterized by a very good

Temperature and aging resistance while For example, caoutchouc adhesives have the strength to provide good adhesion to almost any surface, even on difficult surfaces.

The Velcro fasteners to be used can have quite different embodiments.

The Velcro fasteners can, for example, as described in claim 6, each have as closure partners a hook tape which corresponds to a closure partner, which is formed as a loop tape.

Such, for example, in connection with garments known Velcro fasteners have been proven for decades connecting means that operate under virtually all environmental conditions trouble-free and wear-free and can be purchased inexpensively as large-scale products.

According to claim 7, a so-called mushroom belt is used instead of a hook band as a closure partner. Velcro fasteners with the combination mushroom tape / loop tape are characterized by a high holding power and are very resistant.

That is, such trained Velcro fasteners ensure secure fixation of the flat bars, even in difficult working conditions.

A further advantageous embodiment of a hook and loop fastener is described in claim 8.

Since mushroom bands represent very resistant connection means, a very secure fixing of the flat rods to the drive belts is ensured by a Velcro fastener in which both closure partners are designed as mushroom bands. In connection with the inventive secure fixation of flat bars on their traction means, it is almost irrelevant, which is the closure partner of the hook and loop fastener on the traction means and which of the closure partner is fixed to the flat bar.

It is only important that two matching closure partners correspond to each other and that in each case one of the two closure partners of the hook and loop fastener on the flat bar and the associated closure partner is attached to the traction means.

That is, the arrangement described in claim 9 of a hook tape on the traction means requires as closure partner on the flat bar a loop tape, as described for example in claim 13.

Correspondingly, the flat rod must be equipped either with a hook tape (claim 12) or with a mushroom tape (claim 14) if the closure partner of the hook-and-loop fastener arranged on the traction means is designed as a loop tape, as set out, for example, in claim 10.

As indicated in claim 11, a mushroom band can also be used in the region of the cover element as a closure partner if the closing agent on the tension side is also designed as a mushroom band.

The combination mushroom band / mushroom band results in a very durable and durable closure means, which has its full holding power even after a variety of separation processes and is therefore very well suited to secure flat and safely detachable if required, to appropriate traction means.

As set forth in claims 11-14, the flat bars are each equipped on both sides with so-called end pieces. At these end pieces, which are each equipped with sliding pins for a defined guidance of the flat bars during the parallelization of the fiber material, one of the closure partners of a hook-and-loop fastener is preferably fixed in each case. That is, the fixing of the flat bars on the traction means takes place in the immediate vicinity of the sliding surfaces of the flat bars and thus largely free of any bending forces.

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

Show it:

Fig.l schematically in side view a card, which is equipped with a revolving flat,

2 in side view, the revolving flat unit of the carding machine with a traction means in the form of a toothed belt and cover rods,

3 shows a form-fitting fixation of a flat rod on a toothed belt by means of a hook-and-loop fastener, wherein the connection partner on the toothed belt is designed as a hook band and the closure partner is a loop band on the end piece of a flat rod,

A comparable positive fixing of a flat rod on a toothed belt by means of a hook and loop fastener; However, the loop tape is here arranged on the timing belt, while the hook tape is positioned on the tail of a flat bar. The schematically illustrated in Figure 1, known per se and described for example in DE 39 07 396 C2 in detail

Carding machine 1 has, as usual, a hopper 2, in the

Fiber material in the form of dissolved and purified flakes is fed.

The fed into the hopper 2 fiber material is taken over by a licker-3 as Wattenvorlage and to the

Pass carding drum 4.

Subsequently, the fiber material through the trimmings to the

Flat bars of a revolving flat 5 aggregated and taken over by a so-called pickup roller 7.

Subsequently, the fiber material in one of different

Rolling existing outlet device 8 formed into a card sliver 9, which is stored by means of a tape tray 10 in transport cans 11.

FIG. 2 shows the revolving flat aggregate 5 of the carding machine 1 on a larger scale.

As can be seen, such a traveling lid unit 5 consists of a plurality of flat bars 12 which, preferably over

End pieces 13, on two endless, circulating traction means 14, in the present embodiment, flexible toothed belt, are fixed.

The traction means 14 are guided over cover deflection rollers 6A and 6B, wherein at least one of these cover deflection rollers 6A or

6B is driven.

The traction means 14 are in the region of their overhead

Return path in each case via support rollers 15, 16 out.

In the area of the carding drum 5, a sliding guide 17 is installed, on which the flat bars 12 with sliding pins 18, which are embedded in the end pieces 13, defined spaced from the

Card pulley 5 are guided. As indicated, the traveling deck unit 5 rotates during operation of the card 1 in the direction of arrow 19, the card pulley 5 rotates simultaneously, as indicated in Figure 1, in the direction of arrow 20th

FIGS. 3 and 4 show various embodiments of a form-locking, if necessary, however, easily releasable fixation of a flat bar 12 on one of the traction means 14 by means of a

Velcro closure 30.

The figures show in side view and partly in

Section respectively formed as a toothed belt 14 traction means and a flat bar 12th

The flat bar 12 is supported with sliding pins 18, which are embedded in one of the end pieces 13 of the flat bar 12, on a

Slideway 17 from which the propriety of (not shown)

Garnitur the flat bar 12 to the card drum 5 pretends.

In or on the end piece 13 is a closure partner of a generally designated by the reference numeral 30 Velcro fastener, preferably via an adhesive bond 32 set. Of the

Closure partner is designed as a loop tape 31.

The associated closure partner, for example, a hook tape

33, is set on the timing belt 14.

That is, the hook tape 33 is also via an adhesive bond

34 permanently attached to the toothed belt 14.

In the assembled state, the end piece 13 of the flat bar 12 holds with a centering projection 23 in a corresponding centering opening 24 on the toothed belt 14 and is fixed there by means of the Velcro fastener 30 positively.

The embodiment according to FIG. 4 essentially corresponds to the embodiment according to FIG. 3, but the closure partner of the hook-and-loop fastener 30 has changed places here. That is, the trained as a hook tape 33 closure partner of the hook and loop fastener 30 is fixed to the end piece 13 of the flat bar 12, while the associated, formed as a loop tape 31 closure partner is attached to the toothed belt 14.

Instead of a hook and loop fastener 30, which, as indicated in Figures 3 and 4, a closure partner combination hook tape 33 / loop tape 31, of course, a hook and loop fastener 30 can be used, the (not shown) closure partner combination mushroom tape / loop tape or the (also not shown) closure partner combination mushroom band / mushroom band has.

Also with respect to the material from which the closure partners of such hook-and-loop fasteners 30 are made are different

Versions possible.

As a rule, such a Velcro fastening system consists of two strong nylon or polyester bands.

The so-called adhesive or hook tape has a plurality of small hooks, which correspond positively in the assembled state with the numerous loops of the so-called loop tape.

The nylon or polyester tapes are preferably determined via acrylate adhesives or rubber adhesive on their carriers (flat bar 12 and timing belt 14).

Acrylic adhesive is characterized by a very good temperature and aging resistance, while rubber adhesives have the strength that they achieve good adhesion on all, even on difficult surfaces.

Claims

Claims:

1. revolving deck unit (5) for a carding machine (1) with cover rods (12) which can be fastened easily on endless traction means (14),

characterized,

the flat rods (12) positioned on the traction means (14) in the working position can be fixed to the traction means (14) by means of a hook-and-loop fastener (30).

2. Moving cover unit according to claim 1, characterized in that the traction means (14) are designed as flexible toothed belts.

3. decklid assembly according to claim 1, characterized in that the traction means (14) are designed as roller chains.

4. Moving cover unit according to claim 1, characterized in that the hook-and-loop fastener (30) has positively corresponding closure partners (31, 33), a closure partner of the hook-and-loop fastener (30) being respectively fixed on the flat rod (12) and an associated closure partner on the traction means (14). is arranged.

5. Moving cover unit according to claim 1, characterized in that the closure partners (31, 33) of the hook and loop fastener (30) in each case via an adhesive bond (32 or 34) on the traction means (14) or on the flat bar (12) are fixed.

6. revolving deck unit according to one of the preceding claims, characterized in that the hook-and-loop fastener (30) has a hook band (33) and a loop tape (31) as closure partners.

Has 7 deck unit according to one of the preceding claims, characterized in that the hook-and-loop fastener (30) as closure partner in each case a mushroom belt and a loop tape (31).

8. revolving deck unit according to one of the preceding claims, characterized in that the hook-and-loop fastener (30) has in each case two mushroom bands as a closure partner.

9. decklid assembly according to claim 4, characterized in that the hook tape (33) of the hook and loop fastener (30) is arranged in each case on the traction means (14).

10. Rotating cover unit according to claim 4, characterized in that the loop tape (31) of the hook and loop fastener (30) is arranged in each case on the traction means (14).

11. Moving cover unit according to claim 6, characterized in that in each case one of the mushroom bands of the hook and loop fastener (30) on the traction means (14) and the associated mushroom belt on the flat bar (12) or an end piece (13) of the flat bar (12) is arranged.

12. decklid assembly according to claim 4, characterized in that the hook tape (33) of the hook and loop fastener (30) respectively on the flat bar (12) or an end piece (13) of the flat bar (12) is arranged.

13. Moving cover unit according to claim 4, characterized in that the loop tape (31) of the hook and loop fastener (30) respectively on the flat bar (12) or an end piece (13) of the flat bar (12) is arranged.

4. Moving cover unit according to claim 4, characterized in that a Pilsband the Velcro (30) respectively on the flat bar (12) or an end piece (13) of the flat bar (12) is arranged.