EP3959363B1 - Card - Google Patents

Description

The present invention relates to a card with a drum and a revolving flat with flat bars running around a portion of the circumference of the drum, with at least one flat bar being designed to transmit current operating data or an electrical contact to a controller of the card, with the at least one flat bar being designed is to correspond with at least one contact element, wherein the contact element is designed to conduct the electrical contacts or data to the controller of the card, wherein the at least one contact element is arranged in the area of a flexible bend. The invention also relates to a contact element.

When cleaning or carding the fiber material, e.g. As cotton and / or man-made fibers, a rotating roller equipped with a clothing are usually contrasted with stationary or rotating cleaning or carding elements. In order to achieve a good cleaning or carding effect, these elements must be arranged as close as possible to the clothing of the rotating roller. The setting is made when the roller is cold and the roller is stationary. The effective distance between the tips of a clothing and a carding element opposite the clothing is called the carding gap. The carding gap is decisive for the carding quality. The size (width) of the carding gap is an essential machine parameter, which characterizes both the fiber processing technology and the running behavior of the machine. The carding gap is set as narrow as possible without taking the risk of a "collision" of the working elements. In order to ensure that the fibers are processed evenly, the gap should be as even as possible over the entire working width of the machine. The carding gap is particularly influenced by the machine settings on the one hand and the condition of the clothing on the other. The most important carding gap of the revolving flat card is in the main carding zone, ie between the drum and the revolving flat unit. At least one set adjacent to the working distance is in motion, usually both. In order to increase the production of the card, an attempt is made to select the operating speed or the operating speed of the moving elements as high as the fiber processing technology allows. The working distance changes depending on the operating conditions, since the components of the card thermally expand unevenly. The distances between the drum and the flat, doffer, fixed flats and separating points with knives are thus reduced. In extreme cases, the gap set between the active surfaces can be completely consumed by thermal expansion, so that relatively moving components collide. The result is greater damage to the affected high-performance card. After all, in particular the generation of heat in the working area of the card can lead to different thermal expansions if the temperature differences between the components are too great. In order to reduce or avoid the risk of collisions, the carding gap between opposing clothings is set relatively wide in practice, ie there is a certain safety distance. However, a large carding gap leads to the undesirable formation of neps in the card sliver. On the other hand, what is desirable is an optimal, in particular constantly narrow, size, as a result of which the number of neps in the card sliver is significantly reduced.

Various measuring methods are known for determining the carding gap, which have also become established in practice. There are Although there are various proposals to adjust the carding gap during operation, these proposals have not yet been implemented in the series production of cards.

Furthermore, it is known to transmit data about the operating state of the card from a revolving flat bar via contact elements or wirelessly to the control of the card.

In the EP 3354774 A1 a carding gap setting is described in which the flexible arch can be adjusted in segments. This document also discloses the setting of the carding gap on a flat bar. Both methods can be used while the card is in operation. The flat bar is designed to transmit data to a controller, with a contact element being stationarily arranged in the flexible bend, which interacts with the pins of the flat bar.

The EP 1178136 A1 describes a sandwich-like structure of the sliding strip, with spring elements being able to be arranged within the sliding strip in order to compensate for the play between the components and to compensate for possible vibrations. A transmission of data for determining or setting the carding gap is not provided. The Revelation of EP 1201797 A1 shows a sliding guide that is guided on adjustable support points and is designed to be displaceable in the direction of the drum circumference.

The disadvantage is that the setting of the carding gap is only possible within a small adjustment range. An adjustment of the carding gap in the range of several millimeters is not possible with this arrangement of the contact element in the flexible sheet, since the contact between the flat bar and the contact element would be interrupted due to the large adjustment path. Retrofitting existing cards with this system is also too expensive.

The object of the invention is the further development of a card in which the carding gap can be adjusted within a larger range and in which data or electrical contacts can be reliably transmitted from a flat bar to a controller.

This object is achieved on the basis of a card according to the preamble of claim 1 in connection with the characterizing features. Advantageous developments of the invention are specified in the dependent claims.

The invention according to claim 1 relates to a card with a drum and a revolving flat with flat bars running around a portion of the circumference of the drum, with at least one flat bar being designed to transmit current operating data or an electrical contact to a controller of the card, with the at least one Flat bar is designed on at least one end face to correspond with at least one contact element, the contact element being designed to conduct the electrical contacts or data to the control of the card, the at least one contact element being arranged in the area of a flexible bend.

The invention includes the technical teaching that the at least one contact element has at least one contact arc, which is designed to compensate for a change in the distance between the flat bar and the drum. The contact element can be arranged and fastened in a stationary manner on the flexible bend. Because the contact bow is designed to compensate for a change in the distance between the flat bar and the drum, changes in the carding gap in the range of several millimeters can be determined, which was not possible with the prior art. The contact element can be retrofitted to cards with sufficient accuracy, for example to transmit data from a flat bar to the controller. The flat bar can be fitted with an electronic component be equipped and, for example, exchanged for a first calibration of the flexible sheet against a conventional flat bar. The change in the carding gap of the order of magnitude of several millimeters can also be used to automatically calibrate the carding gap with sufficient certainty and to approach it slowly at a distance when first setting the zero point.

According to the invention, the at least one contact arc is arranged resiliently or elastically on the contact element for this purpose. The resilient or elastic arrangement can take place by means of spring elements or elastic rubber or plastic elements, for example made of foam rubber.

One or more contact arcs are preferably arranged on or in a sliding strip.

Due to the fact that several contact arcs are arranged at a distance from each other concentrically to the drum on the flexible arc, the position of a contact transfer between a set of a flat bar and a set of the drum can be determined precisely. Several contact arcs can be arranged on a contact element.

In a preferred embodiment, the contact bow is designed in one piece, or it has a rail and at least one spring element. If the contact arc is designed in one piece, it can consist of an elastic base material that is coated or connected by means of an electrically conductive layer.

In the multi-part design, the contact arc has at least one spring element and at least one rail. The rail interacts with a sliding element, pin or electrically conductive connection of the flat bar, the sliding element, pin or electrically conductive connection making contact over or on the rail glides. The spring element is designed to press the rail against the sliding elements or pins with pretension, so that contact for the transmission of data or an electrical contact is always ensured.

The at least one spring element is advantageously arranged with a first end on the contact element, and the contact bow is arranged on the second end. The contact element accommodates the spring element or elements between a carrier and a clamping element, which can be produced from an electrically insulating material.

The fact that several contact elements are stationarily arranged on the flexible bend results in simple and inexpensive production from a plastic that is easier to produce than a one-piece contact element that extends over an angle of approximately 90° to 120°.

The contact element preferably has means for protecting the rail and the spring elements, which can be designed, for example, as a circumferential arc. The rail and the spring elements could be damaged during cleaning and maintenance work. The arc can also be designed to limit the spring deflection or to protect the spring elements from overloading. The sliding elements or pins can slide on the arc after a predetermined adjustment range, so that further pressing down or tensioning of the spring elements is avoided.

At least one flat bar preferably has an electronic component for recording the operating data and forwarding it to the control of the card. The electronic component is suitable for transmitting the operating data to the control of the card in a wireless or contact-based manner. The electronic component is preferably arranged in a cavity in the flat bar, so that the flat bar can be mass-produced and countered with little effort conventional flat bars can be exchanged. By integrating the electronic component in the hollow space of the flat bar, it is protected from dirt at the same time.

Due to the fact that the clothing of the drum with the drum and the clothing of the flat bar are arranged electrically conductive but electrically insulated within the card, whereby an electrical voltage can be applied to both components, an electrical contact occurs when the clothing touches or is very close together , which is recorded and evaluated by the controller for setting the carding gap. This means that automatic carding gap control is possible when the card is at a standstill and during operation.

The contact element for use on a card has at least one contact arc which is designed to interact with the sliding elements or pins of the flat bar and to compensate for a change in the distance between the flat bars and the drum. The contact element can be attached in segments to the flexible bend of the card, so that several contact elements cover an angular area concentrically on the drum and transmit data from an electronic component of a flat bar or electrical contacts between the clothing of the flat bar and the clothing of the drum to the control of the card. With the contact element, distance changes in the millimeter range between the flat bars and the cylinder can be compensated. At the same time, the contact element is suitable for being retrofitted to a card, for example in order to implement an initial calibration of the flexible sheets or the carding gap with an exchangeable measuring flat rod.

Figur 1

eine schematische Seitenansicht einer Karde mit der erfindungsgemäßen Vorrichtung;

Figur 2

eine perspektivische Darstellung eines Flexibelbogens mit einer Gleitleiste und den erfindungsgemäßen Kontaktsegmenten;

Figur 3a

eine erste Darstellung der Kontaktsegmente;

Figur 3b

eine Explosionszeichnung der Kontaktsegmente;

Figur 4

eine vergrößerte Detaildarstellung mit den Stiften eines Deckelstabes;

Figur 5a

eine weitere Ausführungsform eines Kontaktsegmentes von der Vorderseite;

Figur 5b

eine weitere Ausführungsform eines Kontaktsegmentes von der Rückseite;

Figur 6a

ein weiteres Ausführungsbeispiel der Erfindung mit einem in der Gleitleiste integrierten Kontaktelement;

Figur 6b

ein weiteres Ausführungsbeispiel der Erfindung mit einem in der Gleitleiste integrierten Kontaktelement.

Further measures improving the invention are presented in more detail below together with the description of a preferred exemplary embodiment of the invention with reference to the figures. Show it:

figure 1

a schematic side view of a card with the device according to the invention;

figure 2

a perspective view of a flexible sheet with a sliding strip and the contact segments according to the invention;

Figure 3a

a first representation of the contact segments;

Figure 3b

an exploded drawing of the contact segments;

figure 4

an enlarged detail view with the pins of a flat bar;

Figure 5a

another embodiment of a contact segment from the front;

Figure 5b

another embodiment of a contact segment from the back;

Figure 6a

a further exemplary embodiment of the invention with a contact element integrated in the sliding strip;

Figure 6b

another embodiment of the invention with a contact element integrated in the sliding strip.

1 shows a card 100 according to the prior art, in which fiber tufts are guided via a chute to a feed roller 1, a feed table 2, via a plurality of lickerins 3a, 3b, 3c, to the drum 4 or the spool. On the drum 4, the fibers of the fiber tufts are parallelized and cleaned by means of stationary carding elements 13 and rotating flat bars 20 arranged on a revolving flat 17. The resulting fibrous web is then conveyed via a doffer 5, a stripping roller 6 and several pinch rollers 7, 8 to a fleece guide element 9, which forms the fibrous web with a funnel 10 into a sliver, which is conveyed via take-off rollers 11, 12 to a downstream processing machine or a Pot 15 is handed over. The adjustment of the flat bars 20 to the drum 4 (carding gap) takes place via a flexible bend or slide rails 18, not shown here, which can have wedge-shaped elements aligned with one another.

The contact element 22 is part of an overall concept with which the concentricity of the flexible sheet 27 or the sliding strip 18 to the drum 4 and/or the distance between the flat bars 20 and the drum 4 (carding gap) can be automatically adjusted. Depending on the design of the card 100, the flexible bend 27 can have a sliding strip 18 with the same cross section, on which the flat bar 20 slides along its flat travel. Alternatively, the sliding strip 18 can also consist of two wedge-shaped sliding strips 18a, 18b, which are arranged opposite one another, with the upper sliding strip 18a being arranged to be displaceable on the lower sliding strip 18b, so that the outer radius of the sliding strip 18 changes with a displacement. In both variants, the sliding strip 18 is arranged and fastened on the flexible bend 27. For this purpose, the flexible bend 27 can have a groove which is open at the top and into which the lower sliding strip 18b can be integrated. The lower sliding strip 18b can be formed in one piece with the flexible bend 27 be. Alternatively, the sliding strip can also be arranged on the side plate so that it can be adjusted directly or indirectly, for example as a flexible bend with a coated surface. Ultimately, it is an adjustable guide track for the revolving flat, which is guided on a partial circumference of the drum 4 concentrically to the drum 4 with a defined carding gap.

The overall concept of the automatic carding gap control includes an electrically conductive clothing with an associated flat bar 20, which is arranged inside the card 100 in an electrically insulated manner. For this purpose, in the case of the flat bars 20 of the revolving flat system 17, the clothing 20 is arranged in an electrically conductive foundation, as is shown in FIG EN102017101863 is described. The flat rods 20 are electrically insulated out on the sliding strip 18, the electrical contact for the contact and temperature control T-CON, which is in the EN102006002812 described, is routed and transmitted via the set into the foundation via the outer sliding elements into the contact and temperature control T-CON.

The figure 2 shows the principle of the sliding strip 18, which can consist of an upper sliding wedge-shaped sliding strip 18a and a lower fixed wedge-shaped sliding strip 18b. The lower sliding strip 18b can be integrated in a groove of the flexible bend 27 that is open at the top and can therefore not be seen separately in this illustration. Irrespective of this embodiment described, a one-piece sliding strip 18 can also be arranged on or partially in the flexible bend 27 . The lower fixed wedge-shaped sliding strip 18b is stationary or arranged on or in the flexible bend 27 and, if necessary, is formed in one piece with it. In this example, the sliding strip 18 for the revolving flat system 17 is shown. Usually, the flexible bend 27 is directly or indirectly connected to the side plate of the card 100, which is not shown here, so that each card 100 has at least one single-piece or multi-piece flexible sheet 27 on both sides of the drum 4 . The radius of the flexible bend 27 and the sliding strip 18 arranged on it should be set concentrically to the radius of the drum 4, since the flat bars 20 are guided against the direction of rotation of the drum 4 on their flat travel and should always have a constant distance from the drum 4 (carding gap). . On the upper side of the upper sliding strip 18a, the flat rods 20 slide with their sliding elements or pins 20a, which are guided and moved at a distance from one another via a belt, not shown here. The sliding elements or pins 20a can interact with the contact arc 23 of a contact element 22, which can be arranged, for example, laterally on the sliding strip 18 or on the flexible arc 27. Alternatively, an electrically conductive connection between the flat bar 20 and the contact element 22 can also be possible. The electrical contact during calibration is thus made via the tips of the fittings of the flat bar 20, via an electrically conductive foundation of the flat bar 20 to the sliding elements or pins 20a, which are electrically connected to the foundation, to the contact arc 23. This exemplary embodiment shows the stationary arrangement of, for example, four contact elements 22 on the flexible bend 27, so that the location of the contact between the clothing of a flat bar 20 and the clothing of the drum 4 can be localized very precisely. The contact elements 22 with their contact arcs 23 are in turn electrically connected to the controller of the card 100 .

In order to adjust the radius of the sliding strip 18 concentrically to the radius of the drum 4 and/or to set the basic distance between the surface of the sliding strip 18 and the drum 4, the flexible bend 27 has a plurality of adjusting spindles 19 that can be adjusted manually or by motor. In this embodiment, there are six adjusting spindles 19 and two adjustment points at the ends of the Provided flexible sheet, with which the flexible sheet 27 on each side of the card 100 is adjustable. As already mentioned, the upper sliding strip 18a is adjusted on the lower sliding strip 18b with a toothed wheel, not shown here, which is driven by means of a drive 21 . The drive 21 can be designed as a motor-gear combination, for example as a stepper motor with an externally arranged sensor system or as a servo motor with an integrated sensor system. By adjusting or shifting the upper sliding strip 18a on the lower sliding strip 18b, the wedge shape simultaneously translates the movement by covering a large distance on the circumference of the lower sliding strip 18b, which causes only a small change in the radius. Since the contact elements 22 are fixed in place on the flexible bend 27, the maximum change in the radius of the sliding strip 18 also causes a change in the distance between the sliding elements or pins 20a of the flat bar 20 and the flexible bend 27 and the drum 4. This change in distance must therefore be compensated for in such a way that the electrical Contact between the pins 20a of the cover bars 20 and the contact sheet 23 is ensured. For this purpose, the contact arc 23 is arranged on the contact element 22 in a resilient or elastic manner.

In the Figures 3a and 3b the contact element 22 is shown enlarged. The contact element 22 can comprise a carrier 22a and a clamping element 22c, between which the contact sheet 23 is clamped. The carrier 22a and the clamping element 22c can be connected to one another in a positive and/or non-positive manner. A bow 22b, which is arranged on the carrier 22a, can limit the spring deflection of the contact bow 23 and at the same time protect the rail 23a and the spring elements 23b from damage during cleaning and maintenance work.

The contact arc 23 includes a rail 23a, which is slightly convex and is substantially concentric to the radius of the

Drum 4 extends. In this case, the rail 23a can be produced, for example, from a flat or round material, with a flat or curved upper side interacting with the pins 20a of the cover 20 . The pins 20a slide on the one hand on the slide rails 18, but protrude slightly over the slide rail 18, so that the contact arc 23 with the rail 23a presses against the pins 20a from below, thus creating a mechanical and electrical connection. The rail 23a of the contact bow 23 is arranged on the contact element 22 by means of spring elements 23b. In this exemplary embodiment, the spring elements 23b consist of flat material bent in an S-shape, which is arranged on the underside or on the side of the rail 23a and can be fastened. However, the spring elements 23b can also consist of spiral springs, torsion springs or alternative spring elements, provided they can compensate for the adjustment of the carding gap. In this exemplary embodiment, the spring elements 23b also produce the electrical connection between the rail 23a and a connection 24, with which an electrical contact can be produced between the clothing of the flat bar 20 and the clothing of the drum 4 and can be transmitted to a controller. Alternatively, the spring elements 23b can also be designed to be electrically non-conductive or insulated, so that the contact between the rail 23a and a connection 24 or another connection for controlling the card 100 can be transmitted as an electrical contact by means of a separate line. Instead of the spring elements 23b, alternative elastic materials (rubber, elastic plastics, etc.) can also be used, with which a change in the distance between the flat bars 20 and the drum 4 can be compensated.

In this exemplary embodiment, the connection 24 is arranged on the carrier 22a and corresponds with a first end directly or indirectly to the rail 23a or to one of the spring elements 23b. The second The end of the connection 24 can be designed in such a way that an electrical line connection can be plugged in.

In the embodiment of figure 2 Four contact elements 22 are arranged on the flexible bend, which segment by segment can transmit an electrical signal when there is contact between the clothings of the flat bars 20 and the clothing of the drum 4 to the controller. Restricting the arc length of each contact element 22 to an angular range of, for example, 10° to 30° enables the carrier 22a and clamping elements 22c to be manufactured inexpensively. Alternatively, it is also possible to use a one-piece contact element 22 with a continuous contact bow 23, for example in order to transmit data from an electronic component in the flat bar 20 to the controller. If the location of a contact between the clothing of the flat bar 20 and the clothing of the cylinder 4 is to be transmitted in this variant, at least one additional sensor must also be used, which, among other things, determines the angular position of the cylinder 4 and determines the associated flat bar 20. A segmentation of the contact arc 23 allows in a simple manner a sufficiently precise location of a contact between the clothing of the flat bar 20 and the clothing of the drum 4. The segmentation can be carried out in such a way that the maximum arc length of the contact arc 23 corresponds to the distance between two pins 20a of a flat bar 20 or the width of the sliding element. The distance between two contact sheets 23 must be greater than the distance between two pins 20a or the width of a sliding element, so that the distance between the contact sheets 23 is not bridged by a flat bar 20. If only a pin 20a or only a limited part of a sliding element is to be electrically conductive, the distance between the contact sheets 23 can be reduced accordingly.

The number of spring elements 23b naturally varies with the arc length of the rail 23a and the structural design of the rail 23a and its attachment to the contact element 22.

figure 4 1 shows once again the interaction of a flat bar 20 with the contact element 22, with the sliding elements or pins 20a sliding along the rail 23a and the spring elements 23b pressing the rail 23a against the pins 20a. In this exemplary embodiment, the carrier 22a is fastened to the flexible bend 27 with the clamping element 22c. Both can be made of a plastic, which receive the contact sheet 23 in an electrically insulated manner. The contact arc 23 is arranged between the carrier 22a and the clamping element 22c, the lower region of the spring elements 23b being arranged in a clamping manner between the carrier 22a and the clamping element 22c. The sheet 22b limits the spring deflection of the rail 23a and at the same time protects the contact sheet 23 from damage. In this exemplary embodiment, a spring element 23b rests on an angled leg of connection 24 . An electrical line can be connected to the free leg of the connection 24 so that a signal or an electrical contact can be transmitted from the sliding element or pin 20a of the flat bar 20 to the controller of the card 100 via the contact element 22 .

In the Figures 5a and 5b an alternative embodiment of a contact element 22 is shown enlarged. The contact element 22 includes at least one contact arc 23. In this exemplary embodiment, the contact arc 23 is designed in two parts and includes a rail 23a, which is arranged on the contact element 22 by means of spring elements 23b. However, the contact arc 23 itself can also be designed to be elastic or resilient and can be arranged directly or indirectly on the contact element 22 . The contact element 22 can further comprise a carrier 22a and a clamping element 22c, between which the contact arc 23 can be clamped. The contact sheet 23 can but also be arranged otherwise on the contact element 22. The carrier 22a and the clamping element 22c can be connected to one another in a positive and/or non-positive manner. A bow 22b, which is arranged on the carrier 22a, can limit the spring deflection of the contact bow 23 and at the same time protect the rail 23a and the spring elements 23b from damage during cleaning and maintenance work. In this exemplary embodiment, the spring element 23b is designed as an elastic and heat-resistant plastic or rubber, for example foam rubber, that is arranged as a one-part or multi-part spring element 23b between the carrier 22a and the rail 23a. The spring element 23b can be glued onto the carrier 22a and/or clamped to the carrier 22a with the clamping element 22c. Likewise, the rail 23a can be connected to the spring element 23b, in this case to the elastic plastic or rubber, by means of an adhesive connection. Since the spring element 23b is only subjected to pressure, an adhesive connection is sufficient for this application.

The contact arc 23 or its rail 23a is slightly convex and extends essentially concentrically to the radius of the drum 4. The rail 23a can be made, for example, from a flat or round material, with a flat or curved top with the pins 20a of the Cover 20 cooperates. The pins 20a slide on the one hand on the slide rails 18, but protrude slightly over the slide rail 18, so that the contact arc 23 with the rail 23a presses against the pins 20a from below, thus creating a mechanical and electrical connection. In this exemplary embodiment, the rail 23a of the contact bow 23 is arranged on the contact element 22 by means of at least one spring element 23b, which is designed as an elastic and heat-resistant plastic or rubber. The contact arc can also be designed to be elastic or resilient, for example as an electrically conductive layer on the be applied elastic plastic or rubber and thus be formed in one piece. Alternatively, the contact bow can also be designed as an electrically conductive cable with an elastic cross section. In this exemplary embodiment, the electrical connection between the rail 23a and the controller takes place via a connection 24, since the spring element 23b is designed to be electrically insulating. For this purpose, the electrical contact between the contact bow 23 or the rail 23a and the connection 24 or another connection for controlling the card 100 can be transmitted by means of a separate line.

In this exemplary embodiment, the connection 24 is arranged on the carrier 22a and corresponds with a first end directly or indirectly to the contact arc 23 or to the rail 23a. The second end of the connection 24 can be designed in such a way that an electrical line connection can be plugged in.

Even if the embodiment described here, starting from the drum, is arranged below the revolving flat 17, an arrangement above the revolving flat 17, for example on the side plate, can also be possible. The contact sheet 23 would then resiliently contact the slides or pins 20a above them.

In another embodiment of the Figure 6a and 6b the contact element 22 is integrated into the sliding strip 18 or the upper sliding strip 18a. In Figure 6a are segmented or partially incorporated grooves in the sliding strip 18, 18a, in which the contact sheet 23 is used. The contact bow 23 again has a spring element 23b, not shown, on which a rail 23a is mounted. The contact arc 23 or the rail 23a protrude from the surface of the sliding strip 18, 18a when unloaded by the pins 20a of the cover bars 20.

When loaded by the pins 20a of the flat bars 20, the contact arc 23 forms a flat surface with the surface of the sliding strip 18, 18a. The contact arc 23 can be formed in several parts from at least one spring element 23b and the rail 23a and can be fastened to one another, for example by means of gluing. However, the contact bow 23 can also be designed in one piece, for example as a spring element 23b made of plastic or rubber with an electrically conductive layer or as an elastic conductive cable.

Furthermore, the at least one spring element 23b can be made of metal springs or elastic and heat-resistant plastic or rubber. The spring elements 23b can be arranged in the center of the sliding strip 18, 18a or on the side edge (dashed representation in Fig Figure 6a ) there. A connection 24, not shown, can electrically connect the contact arc 23 or the rails 23a to the controller. In the Figure 6b the sliding strip 18, 18a has a shoulder 25 on the lateral edge, which receives the contact element 22, which is designed here in two parts as a contact sheet 23 with a spring element 23b and a rail 23a. In this example, too, the spring element 23b is designed as an elastic and heat-resistant plastic or rubber, which is fastened in the shoulder 25 to the rail 23a, for example by means of an adhesive connection. The lateral arrangement or integration of the contact element on the sliding strip 18, 18a has the advantage that the functional surface of the sliding strip 18, 18a, on which the pins of the flat bar slide, remains free. In the case of a central arrangement, depending on the operating conditions, the cleaning of the sliding strip 18, 18a can be more difficult, with assembly and operational safety being advantageous.

Reference sign

100

card

1

food roller

2

dining table

3a, 3b, 3c

ripper

4

drum

5

customer

6

scraper roller

7

squeegee

8th

squeegee

9

fleece guiding element

10

funnel

11

pull-off roller

12

pull-off roller

13

carding element

15

pot

16

side shield

17

hiking cover

18

wear strips

18a

upper slide bar

18b

lower slide bar

19

adjusting spindle

20

flat bar

20a

Pen

21

drive

22

contact element

22a

carrier

22b

arc

22c

clamping element

23

contact sheet

23a

rail

23b

spring elements

24

Connection

25

Paragraph

27

flexible bow

Claims (10)

1. Card (100) having a cylinder (4) and a revolving flat (17) with flat bars (20) running around a portion of the circumference of the cylinder (4), wherein at least one flat bar (20) is configured to transmit current operational data or an electrical contact to a controller of the card (100), wherein the at least one flat bar (20) is configured to correspond with at least one contact element (22), wherein the contact element (22) is configured to conduct the electrical contacts or data to the controller of the card (100), wherein the at least one contact element (22) is arranged in the region of a flexible curve (27), characterised in that the at least one contact element (22) has at least one contact curve (23) which is configured to compensate for a change in distance between the flat bar (20) and the cylinder (4) so that contact for the transmission of data or an electrical contact is always ensured, wherein the at least one contact curve (23) is arranged in a spring-loaded manner or resiliently on the contact element (22).
2. Card according to claim 1, characterised in that a plurality of contact curves (23) are arranged on the flexible curve (27) spaced apart from one another and concentrically with the cylinder (4).
3. Card according to claim 1, characterised in that one or more contact curves (23) are arranged on or in a slide rail (18; 18a).
4. Card according to any one of the preceding claims, characterised in that each contact curve (23) is in one-piece form or has a rail (23a) and at least one spring element (23b).
5. Card according to claim 4, characterised in that the at least one spring element (23b) is arranged with a first end on the contact element (22), and the contact curve (23a) is arranged at the second end.
6. Card according to claim 1, characterised in that a plurality of contact elements (22) are fixedly arranged on the flexible curve (27).
7. Card according to any one of the preceding claims, characterised in that the contact element (22) has means for limiting the spring travel of the spring element or elements (23b).
8. Card according to claim 4, characterised in that the at least one spring element (23b) consists of a metal, a resilient plastics material or rubber.
9. Card according to claim 1, characterised in that at least one flat bar (20) has an electronic component for acquiring the operational data and transmitting them to the controller of the card.
10. Card according to claim 1, characterised in that the clothing of the cylinder (4) and the clothing of the flat bar (20) are arranged within the card in an electrically conductive but electrically insulated manner, wherein an electric voltage can be applied to both components.

Images