EP2406415A1

EP2406415A1 - Revolving flat card

Info

Publication number: EP2406415A1
Application number: EP10707797A
Authority: EP
Inventors: Lars Weisigk; Emil Medvetchi; Martin Tobler; Cedric De Silvestro
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 2009-03-10
Filing date: 2010-03-03
Publication date: 2012-01-18
Anticipated expiration: 2030-03-03
Also published as: EP2406415B1; CN102348839B; CN102348839A; CH700550A2; WO2010102416A1

Abstract

The invention relates to a revolving flat card (1), comprising a drum (4) and a revolving flat assembly (5) which spans a working width (B) of the drum (4) and comprises a flat card (6) that revolves. The flat card (6) is mounted on both sides outside of the working width (B). The drum (4) and flat card (6) are equipped with pieces of clothing, which are disposed opposite of each other on part of the revolution of the flat card (6) and form a carding space (24) in between each other. Means are provided for adjusting the carding space (24) during the course thereof over the working width (B) of the drum (4), wherein the setting of the carding space (24) can be varied depending on operating parameters or depending on a flat card position.

Description

revolving

The invention relates to a revolving flat card with a drum and, a working width of the drum spanning decking unit comprising revolving deckle, which are stored on both sides outside the working width, the drum and moving lid are provided with sets, which are on a part of the circulation of Opposite cover and thereby form a carding room between them; and a revolving lid and adjustment method.

In a carding machine, the lid area together with the drum forms the main carding zone and, as a function, has the dissolution of the flakes into individual fibers, removal of impurities and dust, elimination of very short fibers, the dissolution of nits and the parallelization of the fibers. Since the lids used are due to their function by dirt and fibers added, it is necessary to clean them. Therefore, the revolving lid has been developed, wherein the lid are held together by means of a chain or a belt and combined to form an endless, revolving band. During one revolution of the lid, also called lid travel, a part of the lid is always in direct use opposite the drum unit. The remaining part of the lid is transported backwards on pulleys and can be cleaned during this phase and possibly ground.

The width or the part of the axial length of the drum, which is covered with a set forms the working width of the card. About this working width is formed between the respective set of a moving lid and the clothing of the drum a space, the carding room. At the narrowest point of the carding room, a narrow gap is created, called the carding nip. The carding chamber or carding gap results from the fact that the revolving lids, guided by arcuate strips, so-called flexible sheets, are guided along the circumference of the drum in a distance determined by these flexible sheets. The revolving lids span the entire working width of the drum and are held at both ends by the said chains or straps and guided by the flexible arch. The size of the Kardierspalts lies with a revolving flat card between 0.10 to 0.30 mm for cotton or up to 0.40 mm for man-made fibers. Therefore, the precise guidance of the revolving lids by the flexible bend and the construction of the revolving lids is of central importance.

The existing between the set of the drum and the set of a revolving door carding is not constant due to various influences during a cover journey and over the working width of the lid. Due to the changing operating conditions in the area of the carding nip resp. the Kardierraumes, such as the temperature conditions, the clothing load by receiving dirt and other disposal or acting on the revolving lid or the drum forces such as centrifugal or gravitational force, the carding is influenced in its geometry. Due to the influence of the rising during operation temperature in the region of the carding room is an expansion of the drum and the revolving lid. These temperature conditions change on the one hand during a cover trip and on the other hand over the working width. The temperature in the carding chamber is not the same in the lid inlet area as in the lid outlet area. The cover inlet area represents the end of the main carding zone seen in the drum rotation direction in opposite operation of the revolving flat top unit. Accordingly, the beginning of the Hauptkardierzone the cover outlet area seen in the drum rotation direction assigned. Due to the carding work to be done, the revolving lid is heated during its lid travel through the main carding zone. Because there is no uniform air flow over the working width of the drum, the heating of the revolving lid is not even over the course of the working width. Similar influences are also due to gravity. The moving lids are usually guided from below over a highest point and in turn down the drum circumference. Due to this arcuate guide resulting in changing gravitational forces, which have a deformation of the revolving lid result. If the traveling lids are guided over more than half the circumference of the drum, there is even a reversal of the gravitational force with respect to the lid geometry. In the past, these influences have been tried to counter by various measures. EP 1 687 467 B1 discloses a system in which the opposing elements have a concave arc to compensate for the thermal deflection of the elements. In this case, the revolving covers as well as the drum are manufactured with a predetermined curvature which is matched to the thermal deflection resulting during operation of the machine such that the incorporated curvature and the deflection resulting from the heating cancel each other out. This solution has the disadvantage that the components manufactured in this way can compensate only for a specific increase in temperature during operation. In addition, it is not possible to compensate for other influences, which are dependent, for example, on the material to be processed. Also, the influence of gravity on the deflection of the revolving lid can not be compensated by the disclosed device.

DE 10 2006 014419 A1 discloses a system which, by supplying energy, in particular heat, attempts to achieve a countermovement to the operational deformation of the carding elements. By thus changing the contour of the carding a consistent carding nip while changing operating conditions should be achieved. The system has the disadvantage in an application for movable carding elements such as the revolving lid that a contour change achieved by heat is too sluggish to allow for a change dependent on the lid position. In addition, the prediction of the expected change in shape when exposed to thermal energy is difficult and highly dependent on the specific characteristics of each individual touring lids. In addition, it results from a supply of heat energy the disadvantage that the heat balance of the card is changed, which in turn can lead to an undesirable influence of other components.

The invention has for its object to provide a Wanderdeckelkarde of the type described above, which avoids the disadvantages mentioned and adapted to the operating conditions during a cover travel as well as over the entire working width of the Wanderdeckelkarde carding between drum set and revolving deck set allows. The object is solved by the features in the characterizing part of the independent claims. To solve the problem it is proposed to provide a Wanderdeckelkarde, are provided in which means for adjusting the Kardierraumes in its course over the working width, wherein the setting of the carding chamber in response to operating parameters or from a traveling lid position is variable.

The traveling lids are influenced by means of a new device to the effect that by introducing at least one actuating force which acts directly on the revolving lid, a deformation of the revolving lid can be achieved. In this case, it is possible for a setting force introduced by an adjustment device to act on the revolving cover, which makes it possible to set the carding gap or carding space in the course of the working width on account of the manufacture and adjustment of individual components, changing operating conditions or else depending on the position of the revolving cover , The manufacturing and adjustment data of a component or the changing operating conditions can be specified on the basis of operating parameters. Such operating parameters are, for example, the ambient conditions (temperature, pressure, atmospheric humidity), the properties and conditions of a component (temperature, production, wear), the properties of the material to be processed, or the achievable or current operating values (carding gap, carding quality). The adjusting device can be integrated into the traveling deck unit or mounted outside the drum shield. The revolving lids of today's revolving flat card are usually guided and stored on the so-called flexible arch on both sides of the drum. The flexible sheets are attached to the drum labels outside the working width corresponding to the width or axial length of the garnished portion of the drum. The revolving lids glide along the flexible bend along the circumference of the drum and span the drum over its entire working width between these flexible sheets or the bearing points. Carding machines used today have a working width of more than 1000 mm, usually more than 1200 mm, preferably 1500 mm. The new adjustment device will either integrated between the bearing points of the revolving lids or outside the bearing points or in the bearing points of the revolving lids themselves.

In a first embodiment of the revolving flat-top unit according to the invention, at least one further guide of the traveling deck is inserted between the bearing points of the revolving lids. This guide allows an introduction of a force in the passing flat bar between its bearings. The guide is provided directly on the revolving lids, ie on the side facing away from the lid set side of the revolving lid. The revolving lids have in their construction a flange carrying the clothing and on the opposite side of the flange of the lid assembly on a protruding from this rib. The guide above the revolving lid causes a guide at the top, the lid set end facing away from the rib. The revolving lids have to be adapted in their construction to the additional stress or force transmission at the upper end of the rib. If there is only a single rib, this may possibly be reinforced by transverse ribs at the point where the force is introduced. When using lids made of hollow profiles, the hollow profiles may possibly be reinforced at the force application points.

The actuating force which is transmitted from the guide to the revolving lid may be a mechanical, pneumatic or hydraulic force or a combination thereof. In a further embodiment, the actuating force is a magnetically acting force. An electromagnetically acting force is conceivable as a force. In this case, the actuating force can be adjusted by changing the electrical supply of the electromagnet.

The transmission of a mechanical force in a rigid system from the guide to the revolving lid is only possible with contact of the guide with the revolving lid. At the upper end of the moving lid, which faces the guide, guide surfaces are therefore to be attached. Advantageously, it is to pay attention to a pair of materials with good sliding properties such as a plastic-metal pairing. The guide surfaces on the revolving lids can be applied separately or already provided in the basic construction. The guide, which is mounted above the revolving lids and serves as a means of Dierraumes is provided and generated by its arrangement, a force on the revolving lid can be arranged movable. The guide itself is thus arranged adjustable. The adjustment can capture the guide as a whole or allow a segmental adjustment. With a segment-by-segment adjustment, the force acting on the revolving lid can thus be adapted to the position of the revolving lid. Since the force is mechanically introduced to the revolving lid means an adjustment of the guide in position at the same time an adjustment of the, acting on the revolving lid, force.

In order to ensure proper functioning of the mechanical introduction of force line, all moving lids must have a defined height at those points of the ribs where the guide is passed. The distance from the cover trim to the upper guide surface where the force is applied must be identical for all moving lids simultaneously used in the revolving flat aggregate. The design of this guide surface is dependent on the design of the revolving lid and is preferably to be designed by a mechanical processing or an accumulation of material. An accumulation of material can be done, for example, by pouring or sticking a leveling layer.

In contrast, a non-rigid mechanical system, for example with a spring, would equate to the use of a hydraulic system for generating the actuating force. In such a power transmission, it is not necessary to match the height of the different traveling covers of a revolving flat-top aggregate. Such a system is able to exert a constant force on the revolving lid, even if they differ in height.

Preferably, the actuating force is generated by a pneumatic, magnetic or electromagnetic system. In this way, a non-contact transmission of the actuating force of the guide on the revolving lid is possible.

The attachment of the guide or guides takes place in projecting into the moving lid unit or the traveling lid unit traversing rods or ribs. The attached in the revolving flat unit pulleys for the cover chain are supported by shafts, which are attached to both sides of the revolving flat mounted side shields. The side shields hold together the revolving flat unit. The side shields may be implemented as plates or as another suitable construction for receiving shafts. The attachment of the guide depends on its extent and number.

When using only a single additional guide this is mounted in relation to the working width of the card in the middle of the revolving flat unit. If the revolving lids are guided only over a short distance from the lid inlet towards the lid outlet, respectively, with an actuating force, the guide can be fastened to the axis of the deflecting roller of the revolving lid aggregate.

If several guides are provided distributed over the working width, they can be held by additional transverse rods, which are spanned between the side plates of the revolving flat unit. If only two lateral guides located in the vicinity of the side shields are provided, attachment to ribs projecting on the side shields can take place.

The length of the guides can also extend from the cap inlet point to the lid outlet point. Preferably, however, the lids are forced only in the places or positions in an additional upper guide, which require this to maintain a predetermined geometry of Kardierraumes. For example, at positions where the revolving flaps are moved vertically and thus the contours of the revolving lids are influenced by gravity or in places with a very high temperature.

As a preferred embodiment, a magnetic force can be applied. At one, in the direction of movement of the revolving lid, stationary guide a first magnet and the revolving lid a second magnet is arranged. Depending on how the magnets are poled, can be exercised by the guide a repulsive or an attractive force on the revolving lid. The revolving lid is characterized pushed away from the guide or pulled on the guide, without resulting in a mechanical contact between the guide and the revolving lid. The attached to the guide first magnet can be constructed of a plurality of individual magnets, which are spaced from each other. The second magnet arranged on the revolving lid can be dispensed with in favor of a magnetic material or built-in component, whereby in this design only a force attracting the one or more magnets can be exerted on the revolving lid. Such contactless guidance of the revolving lid has the advantage that no guide surface has to be formed on the revolving lid.

When using at least one permanent magnet as the first magnet, the same adjustment device can be used for the entire guide or when using more than one permanent magnet for individual segments, as in the transmission of the mechanical force. But it is also conceivable to change the distances between the individual, mounted as the first magnet on the guide permanent magnets respectively to make adjustable, whereby the magnetic fields affect the moving lid mutually reinforce or cancel. By adjusting these distances, the magnetic force, which influences the revolving lid as a restoring force in its deformation behavior, can be increased or decreased.

In a preferred embodiment, instead of changing the distances between the first magnets, the guides on which the first magnets are mounted may be moved sideways. In this case, the overlap of the first magnets with the second mounted on the revolving cover magnet changes, which has a change in the force result. The actuating force is adjustable by changing an overlap of the first magnet and the second magnet by means of a displacement of the guide perpendicular to the direction of movement of the revolving lid.

When using electromagnets, the magnetic force acting on the revolving lid can be changed by an electrical control. By the arrangement of the electromagnets along the length of the guide and the arrangement of the guides Even within the traveling deck unit a more or less fine tuning of the actuating force can be achieved depending on the lid position as well as in the course of the working width. However, adjustments of the actuating force independent of the lid position are also conceivable, for example in order to be able to compensate misalignments in the production or uneven wear on machine elements or constructional differences between individual flat bars.

In a second embodiment of the revolving flat-top unit according to the invention, means are provided which allow generating a force within at least one bearing point of the revolving lid. This is possible, for example, by rotating the bearing elements. In this case, a torque is applied to the revolving lid, which causes the lid deforms in a predetermined manner and thus causes a change in the Kardierraumes respectively the carding gap.

In a third embodiment of the revolving flat-top unit according to the invention, means are provided which on the side of at least one bearing point of the revolving flaps facing away from the drum (4) allow a generating force to be generated. For example, a moment can be transmitted to the cover by means of a lever, which likewise causes a deformation of the cover and thus influences or alters the geometry of the carding chamber. If moments are introduced into the revolving lid on both sides of the revolving lid outside the bearing, the deformation of the revolving lid over the course of the working width can be influenced by an intentional difference between the moments. Only with identical moments on both sides is a symmetrical deformation of the traveling lid.

Also in this embodiment, the moment can be generated by a mechanical, hydraulic, magnetic or electromagnetic force. Depending on the design of the active connection necessary for the introduction of force, for example a lever mechanism, a change in the torque acting on the traveling lid as a function of the lid position can be achieved by mechanical or electrical means. It is also possible a combination of the described embodiments of a traveling decking unit according to the invention. When providing a plurality of guides or guide sections, which act on different cover positions, they do not necessarily work on the same principle. A guide section can be installed in a stationary manner, wherein a further guide section is subdivided into individual segments, which can be adjusted independently of one another.

In a preferred embodiment, the guides or guide sections are provided with an actuator system, as a further development of a simple mechanical adjustability. The actuators can be designed electrically or fluid-mechanically. The actuators make it possible to adjust the guide or sections thereof during operation and to adapt them to a current operating situation. For example, it is conceivable to automatically adapt the geometry of the carding chamber when changing over the product to be processed. Also, a coupling with a carding gap measurement is possible by the actuators. As a result, signs of wear can be compensated.

In a further embodiment of the device, the size of the force acting on the revolving lid actuating force is adjustable by the adjustment of the guides or the adjustment of the force itself. The setting of the size of the force can be controlled automatically. The size of the actuating force is controllable depending on the revolving flat position or independently thereof. Depending on whether several actuating forces are distributed over the working width of the card and generated at different positions in relation to the movement of the revolving lid.

In a further embodiment of the device, the actuating force is generated within the lid and it can be dispensed with a power transmission. At least one electromagnet is installed in the revolving lid. The electrical supply can be carried out via sliding contacts. By the electromagnet a magnetic field is built up, which in its strength depends on the power supply. Depending on the distance of the electromagnet to the drum and the environment of the electromagnet, the revolving lid to the drum is more or less strongly pulled. As a result, the revolving lid is deformed accordingly, which is reflected in a change in the geometry of the carding chamber. The installation location in the revolving lid can be done in the rib or in the flange. Also, installation in the clothing or behind a window attached to the clothing is conceivable to prevent interference with the magnetic field through the clothing or its construction.

In a further embodiment, a controller can be installed in the revolving lid in addition to the electromagnet. This allows for a constant power supply of the revolving lid the ability to control or regulate the deformation of the revolving lid via signals. Such a control may be performed depending on various operating parameters or the revolving flat position. The signal transmission can also be done via sliding contacts. The magnets used can also be designed as a combination of permanent magnets and electromagnets. In this case, a constant magnetic field is maintained by the permanent magnet, which is more or less amplified by the electromagnet according to the current need.

To compensate for the changing influence of gravity on the deformation of the revolving lid, a permanent magnet movably mounted in the revolving lid can be used. The rotatably mounted permanent magnet is coupled to a mechanical device, for example a weight provided with a lever, which automatically effects a rotation of the permanent magnet by changing the position of the revolving lid relative to the horizontal. This rotation of the permanent magnet reduces or increases the strength of the magnetic field acting in the area of the drum and has the consequence that the force acting on the revolving lid changes correspondingly.

In the following the invention will be explained with reference to exemplary embodiments and explained in detail by drawings.

Fig. 1 Schematic representation of a side view of a Wanderdeckelkarde according to the prior art

FIG. 2 Schematic representation of a revolving flat card in cross section II of FIG. 1 Fig. 3 shows a schematic representation of a revolving flat-top unit with a first embodiment according to the invention of a means for adjusting the carding chamber

4 Enlarged schematic illustration of a revolving lid at point X in FIG. 3

Fig. 5 Schematic representation of a traveling lid unit with a second inventive embodiment of a means for adjusting the Kardierraumes

FIG. 6 Enlarged schematic illustration of a revolving lid at location Y in FIG. 4

Fig. 7 Schematic representation of a Wanderdeckelkarde in cross section with an inventive device

Fig. 8 Schematic representation of a moving lid with a preferred

Execution of the device according to the invention with an actuating force line between the bearing points of the revolving lid

Fig. 9a, 9b Schematic representation of a revolving lid with an embodiment of the inventive device with an actuating force in a bearing point of the revolving lid

10 Schematic representation of a revolving lid with an embodiment of the device according to the invention with an actuating force introduction outside a bearing point of the revolving lid

Fig. 11a, b Schematic representation of a revolving lid with an embodiment of the inventive device with a Stellkrafterzeugung within the revolving lid

Figure 1 shows a side view of a known Wanderdeckelkarde 1 in a schematic representation. The fiber material to be carded 2, which may consist of natural fibers or synthetic fibers or mixtures thereof, is fed in the form of dissolved and purified flakes in the hopper (not shown), adopted by a Briseur or a licker-3 as Wattenvorlage and a

Tambour or drum 4 passed. The flakes are dissolved on the drum 4 and parallelized. This process is mainly done through the cooperation menwirken of drum 4 and moving lid unit 5, respectively located on the drum 4 drum set 16 and located on the revolving lids 6 cover set 15. The traveling lid 6 are driven by pulleys 7 equal or opposite to the direction of rotation 8 of the drum 4 , In this case, the moving lid 6 on a transport element 9, for example a chain or a belt, pulled over a flexible sheet 10 and returned via pulleys 7 again. In many cases, the flexible sheet 10 are adjustable, manually or via an actuator, so that by moving the flexible sheet 10, the moving lid 6 and thus the set 15 are moved relative to the drum 4. As a result of this movement, the carding gap, the distance between the cover set 15 and the drum set 16, is determined.

Depending on the area of use of a card, differently sized or even several circulating cover units 5 distributed on the circumference of the drum 4 are used. The traveling lid unit 5 covers a more or less large part of the circumference of the drum 4.

The fibers form the non-woven fabric located on the drum 4, which is then removed from a doffer roller 11 and formed in a conventional manner in a, consisting of different rolls, discharge section 12 to a card sliver 13. This card sliver 13 is then deposited by a sliver tray (not shown) in a transport can in a cycloidal manner.

Figure 2 shows a cross section of a known Wanderdeckelkarde in a schematic representation at the point ll of Figure 1. Figure 2 shows the both sides of the drum 4 arranged drum shields 14. These serve on the one hand for supporting the drum 4 and on the other hand for holding the Tilting unit (not shown). Also on the drum shields 14, the flexible sheet 10 are fixed, which have the sliding guides for the revolving lid 6. The revolving lid 6 are respectively through the flexible sheet 10 to form a predetermined carding gap. Carding space between the lid set 15 and the drum set 16 along the drum circumference. Figure 2 also shows the transport elements 9, which outside are attached to the revolving lids 6 and serve to transport the revolving lid 6. The traveling lids 10 are supported solely on both sides of the flexible sheet 10 and span the entire working width B of the drum 4. The working width corresponds to the axial length of the garnished surface of the drum 4th

3 and 4 show a schematic representation of a traveling lid unit 5 with a first embodiment according to the invention of a means 21 for adjusting the carding chamber 24 and the carding space 25, wherein FIG. 4 shows a representation of the detail X from FIG. Inserted into the revolving flat 5 is a guide 21. The guide 21 is disposed above the revolving lid 6. The guide 21 is cantilevered on one of the axes 20 which carry the pulleys 7 of the revolving flat 5 aggregate. The revolving lid 6 is composed of the flange 27, which carries the lid set 15 on its underside, and a rib 26 which protrudes from the flange 27 on the side of the flange 27 opposite the set 15. Depending on the design of the revolving lid, the rib 26 is integrally formed on the flange 27 or flange 27 and rib 26 are formed from a single hollow body. The carding chamber 24 is formed between the lid set 15 and the drum set 16. The narrowest point between the sets 15, 16 of revolving lid 6 and drum 4 is referred to as carding nip 25. If the position of the moving cover 6 relative to the drum 4 is changed, the geometric shape of the carding chamber 24 and possibly also the size of the carding nip 25 changes. Since the traveling covers cantilever the working width B (see Figure 2) of the drum 4 span Carding nip 25, respectively carding space 24 between the two lateral supports given by the overlay on the flexible sheet, depends on the operating and environmental conditions. The guide 21 mounted above the revolving cover 6 now provides a remedy since the guide 21 also makes it possible to influence the marking space 24 between the supports of the revolving cover 6 on the flexible arch. FIG. 4 shows a mechanical transmission of a positioning force F from the guide 21 to the revolving lid 6. The revolving lid 6 is moved away under the guide 21 in the direction of movement 23 counter to the direction of rotation 8 of the drum 4. The two directions of movement 23, 8 of the revolving lid 6 and the drum 4 are exemplary and can also be in the same direction, ie in the same direction be executed. The traveling lid 6 is pressed at the point where it passes under the guide 21 with the force F down in the direction of the drum 4. As a result, the geometry of the carding chamber 24 and the carding gap 24 are influenced or changed. In the power transmission, which can be done purely mechanically by a bias of the guide 21 or hydraulically mounted on the guide 21 cylinder (not shown), the traveling lid 6 slides under the guide 21 therethrough, with a touch occurs. Since the guide 21, apart from a possible adjustment, is stationary results in a Gleitreibungskraft which must be overcome. In order to keep these forces directed against the direction of movement 23 as small as possible, the upper end of the rib 26 is provided with a guide surface 22. The guide surface 22, together with the guide 21, a material pairing, which is formed under the aspect of the best possible sliding properties. It is conceivable that the guide surface 22 is incorporated into the rib 26 of the revolving lid 6 or is subsequently applied. In the embodiment shown in FIGS. 3 and 4, all the traveling covers 6 of a revolving flat-top aggregate 5 must be exactly the same in height from the cover set 15 to the guide surface 22, since the introduction of force takes place via a rigid system. All the traveling covers 6 are moved under the same guide 21 and pushed down by the guide 21 in contact with the force F.

Fig. 5 and 6 show a schematic representation of a revolving flat 5 with a second inventive embodiment of a means 21 for adjusting the Kardierraumes 24 and the Kardierabstandes 25, wherein Figure 6 shows a representation of the detail Y of Figure 5 shows. Inserted into the traveling cover unit 5 is also a guide 21. The guide 21 is arranged above the revolving lid 6. The design of the revolving lid 6 can be taken from the description of Figure 3 and 4. The guide 21 is arranged, for example, at a different location than the guide 21 in FIG. Due to this, the guide can not be attached to an axis of the deflection roller of the revolving flat 5. There are between the side shields of the revolving flat unit (not shown) separate transverse rods 30, 31 inserted, to which the guide 21 is fastened. On the side facing the revolving lid 6 of the guide 21 magnets 32 are attached. The rib 26 of the revolving lid 6 is at least at least in the upper region or in the vicinity of the guide 21 made of a ferromagnetic material or supplemented by a ferromagnetic insert. The traveling under the guide 21 moving lid 6 is repelled in this way by the guide 21 and the attached thereto magnets 32 successively with a force F1, then F2 and then F3 and thus pressed down. The forces F1 to F3 can be identical. There is a non-contact power transmission which has the advantage that the revolving lid 6 must have no guide surfaces and is correspondingly easier to manufacture. By varying the forces F1 to F3, a deformation of the carding chamber 24 and a change of the carding gap 25 as a function of the lid position is possible, wherein the guide 21 can be held stationary.

In a preferred embodiment, the magnets 32 are formed as electromagnets, which results in an adjustment of the individual forces F1 to F3. If the different magnets 32 are also slidably mounted on the guide 21, additional degrees of freedom result for the adjustment.

7 shows a schematic illustration of a revolving flat card in cross section with a device according to the invention. In this case, the guides 21 shown and discussed in FIGS. 3 to 6 are shown distributed over the working width B of the drum 4. By way of example, three guides 21 distributed symmetrically over the working width B are shown. The illustration shows a snapshot of the moving moving lid 6, as it is moved away under the guide 21. In this case, the traveling lid 6 is moved by the transport elements 9 and guided resting on the flexible sheet 10. Between the lid set 15 and the drum set 16 of the carding chamber 24 is shown. The introduced via the guides 21 in the revolving lid 6 forces F4 to F6 deform the spanned between the flexible sheet 10 traveling lid 6 and thereby influence the geometric shape of Kardierraumes 24. The illustrated forces F4 to F6 must not be the same size, so that any shape of the carding chamber 24 over the course of the working width B form. An additional possibility of displacement of the guides 21 in the longitudinal direction of the drum 4 (indicated by arrow 27) results in further adjustment possibilities. the carding room. The manner in which the forces F4 to F6 are introduced into the revolving lid 6 is not shown in FIG. For this purpose, reference is made to the description of Figures 3 to 6.

8 shows a schematic illustration of a traveling cover 6 with a preferred embodiment of the device according to the invention with an actuating force introduction between the bearing points of the revolving cover 6. The revolving cover 6 is provided with a head end piece 34 at both ends. The head end piece 34 is firmly anchored in the revolving cover 6 and serves for coupling the revolving cover 6 to the transport element 9 and for mounting the revolving cover 6 on the flexible arch 10. Above the revolving lid 6, a guide 21 is shown. The guide 21 is equipped on the the revolving lid 6 side facing with a magnet 32. Likewise, the revolving cover 6 is provided with a magnet 36 on the side facing the guide 21. The distance A between the axis 35 of the magnet 32 on the guide 21 and the axis 37 of the magnet 36 on the revolving lid 6 is a measure for the overlap of the magnets 32, 36. At a distance A of zero, the magnets 32, 36 are mirror-symmetrical opposite, which has a maximum force F result. However, if the guide 21 is displaced in one of the possible directions of movement 38, either the distance A between the axes 35, 37 or the distance between the two magnets 32, 36 and thus also the magnitude of the actuating force changes.

9a, 9b show a schematic illustration of a revolving cover 6 with an embodiment of the device according to the invention with an actuating force introduction within a bearing point of the revolving cover 6. Shown is the one end of a revolving cover 6 with the cover set 15 attached thereto and the head end 32 The revolving cover 6 slides with a sliding shoe 33 attached to the head end piece 23 over the flexible arch 10. The revolving cover 6 is pressed onto the flexible arch 10 with the bearing force G by the transport element 9 and the dead weight of the revolving cover 6. The contact force G triggers a reaction force H in the flexible sheet 10. Are the contact force G and the reaction force H in a line, as shown in Fig. 9a, The storage has no effect on the revolving lid 6 in its geometric shape. However, if the flexible sheet 10 or parts thereof are inclined, as shown in Fig. 9b, a torque M due to the axial displacement of the bearing force G and the reaction force H. This torque M is transmitted to the revolving lid 6 and leads to a deformation of the revolving lid 6 and thus to a setting of Kardierraums or carding nips. The generated torque M is to be understood in this embodiment as the previously described actuating force F.

10 shows a schematic representation of a revolving cover 6 with an embodiment of the device according to the invention with an actuating force outside a bearing point of the revolving cover 6. In this embodiment, the actuating force F, which is outside the bearing point of the revolving cover 6, respectively outside the drum shields 14 is initiated, generates a torque M in the revolving lid 6. The force F is generated by magnetic forces between a mounted on the side plate 14 magnet 40 and a second magnet 41. The second magnet 41 is connected via an operative connection 42, such as a linkage, with the head end 32 of the convertible top 6. The connection is ensured by a sliding guide 43, since the revolving cover 6 is moved by the transport element 9 past the stationary introduction of force through the operative connection 42.

Figures 11a and 11b show a schematic representation of a revolving lid with an embodiment of the inventive device with a Stellkrafterzeugung within the moving lid 6. The illustration in Figure 11a shows a snapshot of the moving moving lid 6, as he moves through the transport elements 9 and the flexible sheet 10th is guided on-the-floor. The flexible sheet 10 are attached to the Trommelschilden 14, between which the drum 4 is mounted. Between the lid set 15 and the drum set 16 of the carding chamber 24 is shown, which extends over the working width B. FIG. 11b shows an enlargement of the end piece of the revolving flat bar. The revolving flat bar 6 is provided with a head end piece 34 which produces the connection from the revolving lid 6 on the one hand to the transport element 9 and on the other hand via a sliding block to the flexible arch. One or more electromagnets 50 are in the revolving cover 6. The electrical supply 51 is shown by way of example in FIG. 11 b, whereby sliding contacts 52 are used, which are arranged between the drum shield 14 and the head end piece 34. It is also an arrangement between the flexible sheet 10 and the shoe 34 conceivable. About the sliding contacts 52 of the electromagnet 50 is electrically powered. The supply can be made variable by the arrangement and variety of sliding contacts 52 during the movement of the revolving lid 6, whereby the force F directed by the magnetic field against the drum can be controlled as a function of the revolving flat position.

Legend

1 revolving flat card

2 fiber material

3 lapses

4 drum

5 decklid unit

6 revolving lids

7 pulley

8 Direction of rotation of the drum

9 transport element

10 flexible bend

11 pickup roller

12 discharge section

13 card sliver

14 drum shield

15 lid set

16 drum set

20 axis of the pulley

21 leadership

22 guide surface

23 Direction of movement of the revolving lid

24 carding room

25 carding nip

26 rib

26 flange

27 Direction of movement of the guide

30 First crossbar

31 second crossbar

32 magnet on guide

33 sliding shoe

34 head end piece 35 axis of magnet to guide

36 magnet on revolving lid

37 axis of the magnet on revolving lid

38 directions of movement of the leadership

40 First magnet

41 Second magnet

42 active compound

43 Sliding guide

50 electromagnet

51 Electrical supply

52 sliding contact

A Axial distance between the axles

B working width

F power

F1 - F6 restoring forces

G reaction force H reaction force

M torque

Claims

claims

1. Wanderdeckelkarde (1) with a drum (4) and a, a working width (B) of the drum (4) spanning moving deck unit (5), which comprises revolving moving lid (6), which on both sides outside the working width

(B) are stored, wherein drum (4) and revolving lid (6) are equipped with sets, which are on a part of the circulation of the revolving lid (6) and thereby form a carding chamber (24) therebetween, characterized in that Means for adjusting the carding chamber (24) in its course over the working width (B) of the drum (4) are provided, wherein the

Setting the Kardierraumes (24) in response to operating parameters or from a traveling lid position is changeable.

2. Wanderdeckelkarde (1) according to claim 1, characterized in that the means for adjusting the Kardierraumes (24) are arranged such that at least one actuating force on the revolving lid (6) between the bearing points of the revolving lid (6) can be generated.

3. Wanderdeckelkarde (1) according to claim 1 or 2, characterized in that the means for adjusting the Kardierraumes (24) are arranged such that a

Adjusting force within at least one bearing point of the revolving cover (6) or on the, the drum (4) facing away, at least one bearing point of the revolving lid (6) can be generated.

4. Wanderdeckelkarde (1) according to claim 2 or 3, characterized in that the actuating force (F) is a mechanically, pneumatically or hydraulically acting force or a combination thereof.

5. Wanderdeckelkarde (1) according to claim 2 or 3, characterized in that the actuating force (F) is a magnetically acting force.

6. Wanderdeckelkarde (1) according to claim 5, characterized in that a first magnet (32) on a in the direction of movement (23) of the revolving lid (6) stationary guide (21) and a second magnet (36) on the revolving lid (6) are arranged.

7. Wanderdeckelkarde (1) according to claim 6, characterized in that the adjusting force (F) by changing an overlap of the first magnet (32) and the second magnet (36) by means of a displacement (38) of the guide perpendicular to the direction of movement of the revolving lid ( 6) is adjustable.

8. Wanderdeckelkarde (1) according to claim 5, characterized in that the actuating force (F) is an electromagnetically acting force.

9. Wanderdeckelkarde (1) according to claim 8, characterized in that the size of the adjusting force (F) by changing the electrical supply of an electromagnet is adjustable.

10. Wanderdeckelkarde (1) according to at least one of claims 2 to 4, characterized in that the actuating force (F) in dependence of the revolving flat position or independently thereof is controllable.

11. Wanderdeckelkarde (1) according to any one of the preceding claims, characterized in that the setting of the Kardierraumes (24) the distance between the opposing clothing (15, 16) of the drum (4) and the Wan- derdeckels (6) and / or the geometric shape of the carding chamber (24).

12. Wanderdeckelkarde (1) according to one of the preceding claims, characterized in that the working width (B) is greater than 1'200 mm, preferably 1'500 mm.

13. A method for carding of fiber flakes with a revolving flat card (1), wherein the revolving flat card (1) a drum (4) and a, a working width (B) of Drum (4) spanning, revolving deck unit (5), wherein the traveling deck unit (5) comprises revolving decklid (6) which are stored on both sides outside the working width (B), and the drum (4) and revolving lid (6) Fittings (15, 16) are fitted, which face one another on a part of the circulation of the revolving cover (6) and thereby form a carding space (24) between them, characterized in that the carding space (24) in its course over the working width ( B) of the drum (4) and in dependence on operating parameters or the revolving flat position is set.

14. The method according to claim 8, characterized in that the setting of the carding chamber (24) by a deformation of the revolving lid (6) is achieved.

A traveling lid (6) for use in a revolving flat card (1) according to any one of claims 1 to 12, comprising a rib (26), a flange (27) for fixing a clothing (15), a head end (32) for storage in that the rib (26) or the flange (27) or the head end (32) is shaped such that a control force (F) or a torque (M) for generating a deformation of the revolving lid ( 6) can be introduced.