EP2406415B1 - Revolving flat card - Google Patents

Description

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 has as function the dissolution of the flakes into single 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 relative to the drum set. 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 space or carding gap is obtained by the moving lids, guided by arcuate strips, so-called flexible arch, are guided in a predetermined by this flexible arch distance in the circumferential direction of the drum along. 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. of the carding room, such as the temperature conditions, the clothing load by absorbing dirt and other disposal or acting on the revolving lid or the drum forces such as centrifugal or gravitational force, the carding chamber 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 revolving lids are guided along more than half the circumference of the drum, there is even a reversal of the gravitational force with respect to the lid geometry. These influences have been tried in the past by various measures to counter.

The 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. Here, the moving lid and the drum are made with a predetermined curvature, which is tuned to the resulting during operation of the machine thermal deflection, that cancel the incorporated curvature and resulting from the heating deflection. 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 other influences which, for example, are dependent on the material to be processed also to compensate. Also, the influence of gravity on the deflection of the revolving lid can not be compensated by the disclosed device.

The DE 10 2006 014 419 A1 discloses a system which attempts to counteract the operational deformation of the carding elements by supplying energy, in particular heat. 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. It is possible that on the revolving lid an adjusting force introduced by an adjusting device acts, which allows adjusting the Kardierspaltes respectively Kardierraums in the course of working width due to the production and adjustment of individual components, changing operating conditions or in function of the position of the revolving lid. 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 according to the invention of the revolving flat unit, at least one further guide of the revolving cover is inserted between the bearing points of the revolving cover. 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 lid and as a means to adjust the carding room is provided and generated by its arrangement, a force on the revolving lid can be arranged to be movable. The guide itself is thus arranged adjustable. The adjustment can capture the guide as a whole or allow a segmental adjustment. In a segmental adjustment so that the force acting on the revolving lid force can be adjusted 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 application of force, 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 a material accumulation. 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 force is generated with 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 moving lids are moved vertically and thus the contour of the revolving lids are influenced by gravity or in places with a high temperature.

As a preferred embodiment, a magnetic force can be applied. At one, in the direction of movement of the revolving lid, fixed 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. In the arranged on the revolving lid second magnet can be dispensed with in favor of a magnetic material or built-in part, in this type only one by the or the first magnet attractive force 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.

Instead of changing the distances between the first magnets, in a preferred embodiment, the guides on which the first magnets are mounted can 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, it is also conceivable independent of the lid position adjustments the force, for example, to compensate for misalignments in production or uneven wear on machine elements or structural 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. By way of example, a moment can be transmitted to the cover via 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 type of active connection necessary for the introduction of force, for example a lever mechanism, a change in the torque acting on the revolving lid as a function of the lid position can be achieved by mechanical or electrical means.

It is also a combination of the described embodiments of a traveling deck unit according to the invention possible. 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 portion may be fixed in position, wherein a further guide portion is divided into individual segments, which are independently adjustable.

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 adjustment 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 is attracted to the drum more or less strongly. 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 needs.

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 lever provided with a weight, which automatically causes 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 force acting in the region of the drum strength of the magnetic field and has the consequence that the force acting on the revolving lid actuating force changes accordingly.

Fig. 1

Schematische Darstellung einer Seitenansicht einer Wanderdeckelkarde nach dem Stand der Technik

Fig. 2

Schematische Darstellung einer Wanderdeckelkarde im Querschnitt I-I der Figur 1

Fig. 3

Schematische Darstellung eines Wanderdeckelaggregates mit einer ersten erfindungsgemässen Ausführung eines Mittels zur Verstellung des Kardierraumes

Fig. 4

Vergrösserte schematische Darstellung eines Wanderdeckels an der Stelle X in der Figur 3

Fig. 5

Schematische Darstellung eines Wanderdeckelaggregates mit einer zweiten erfindungsgemässen Ausführung eines Mittels zur Verstellung des Kardierraumes

Fig. 6

Vergrösserte schematische Darstellung eines Wanderdeckels an der Stelle Y in der Figur 4

Fig. 7

Schematische Darstellung einer Wanderdeckelkarde im Querschnitt mit einer erfindungsgemässen Vorrichtung

Fig. 8

Schematische Darstellung eines Wanderdeckels mit einer bevorzugten Ausführung der erfindungsgemässen Vorrichtung mit einer Stellkrafteinleitung zwischen den Lagerstellen des Wanderdeckels

Fig. 9a, 9b

Schematische Darstellung eines Wanderdeckels mit einer Ausführung der erfindungsgemässen Vorrichtung mit einer Stellkrafteinleitung in einer Lagerstelle des Wanderdeckels

Fig. 10

Schematische Darstellung eines Wanderdeckels mit einer Ausführung der erfindungsgemässen Vorrichtung mit einer Stellkrafteinleitung ausserhalb einer Lagerstelle des Wanderdeckels

Fig. 11a, b

Schematische Darstellung eines Wanderdeckels mit einer Ausführung der erfindungsgemässen Vorrichtung mit einer Stellkrafterzeugung innerhalb des Wanderdeckels

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 the FIG. 1

Fig. 3

Schematic representation of a traveling lid unit with a first inventive embodiment of a means for adjusting the Kardierraumes

Fig. 4

Enlarged schematic representation of a revolving hatch at point X in the 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 representation of a moving lid at the point Y in the FIG. 4

Fig. 7

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

Fig. 8

Schematic representation of a revolving lid with a preferred embodiment of the inventive device with an actuating force 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

Fig. 10

Schematic representation of a revolving lid with an embodiment of the inventive device with an actuating force 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

FIG. 1 shows a side view of a known Wanderdeckelkarde 1 in a schematic representation. The fiber material 2 to be carded, which may consist of natural fibers or synthetic fibers or mixtures thereof, is fed into the hopper (not shown) in the form of dissolved and cleaned flakes, taken over by a buffurizer or a licker-in 3 as a wadding template and a drum or tambour Pass a drum 4. The flakes are dissolved on the drum 4 and parallelized. This process happens mainly through the interaction of drum 4 and moving lid unit 5, respectively located on the drum 4 drum set 16 and located on the revolving flats 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. By this movement of the carding, the distance between the lid 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 revolving flat 5 covers a more or less large part of the circumference of the drum 4th

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.

FIG. 2 shows a cross section of a known Wanderdeckelkarde in a schematic representation at the point II of FIG. 1 FIG. 2 shows on 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 traveling lid 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. Kardierraums between the lid set 15 and the drum set 16 along the drum circumference. FIG. 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 revolving flat 5 with a first inventive embodiment of a means 21 for adjusting the Kardierraumes 24 and the Kardierabstandes 25, wherein FIG. 4 a representation of the detail X from the FIG. 3 shows. 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 on its underside the lid set 15, and a rib 26 which protrudes from the flange 27 on the opposite side of the flange 27 of the flange 27. 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. Between the lid set 15 and the drum set 16 of the carding chamber 24 is formed. 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 revolving lid 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. Because the revolving lids cantilever the working width B (see FIG. 2 ) spanning the drum 4 is the carding gap 25 or carding space 24 between the two lateral supports given by the support on the flexible sheet, depending on the operating and ambient conditions. The mounted above the revolving lid 6 guide 21 now provides a remedy, as by the guide 21 influencing the Kardierraums 24 is also possible between the requirements of the revolving lid 6 on the flexible arch. In FIG. 4 is shown a mechanical transmission of a force F of the guide 21 on 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 minimize these forces directed against the direction of movement 23, 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 in FIGS. 3 and 4 As shown, all the revolving lids 6 of a revolving flat-top aggregate 5 must be exactly the same in height from the cover set 15 to the guiding 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.

FIGS. 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 respectively of the Kardierabstandes 25, wherein FIG. 6 a representation of the detail Y from the FIG. 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 execution of the revolving lid 6 can the description FIGS. 3 and 4 be removed. The guide 21 is exemplified elsewhere as the guide 21 in FIG. 3 arranged. 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 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 a variation of the forces F1 to F3 a deformation of the carding chamber 24 and a change of the carding nip 25 in dependence 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.

Fig. 7 shows a schematic representation of a Wanderdeckelkarde in cross section with an inventive device. They are in the FIGS. 3 to 6 shown and discussed guides 21 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 revolving 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. By an additional possibility of displacement of the guides 21 in the longitudinal direction of the drum 4 (indicated by arrow 27), further adjustment possibilities arise of the carding room. In what way the forces F4 to F6 are introduced into the revolving lid 6 is in the FIG. 7 not shown. It is on the description of the FIGS. 3 to 6 directed.

Fig. 8 shows a schematic representation of a revolving lid 6 with a preferred embodiment of the inventive device with an actuating force between the bearing points of the revolving lid 6. The revolving lid 6 is provided at both ends with a head end piece 34. 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.

Fig. 9a, 9b Shown is the one end of a revolving lid 6 with the attached lid set 15 and the head end 32. The revolving lid 6 slides with a By the transport element 9 and the weight of the revolving lid 6 of the traveling lid 6 is pressed with the bearing force G on the flexographic sheet 10 to the head end piece 23 mounted shoe 33 over the flexible sheet. 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 in Fig. 9a shown, The storage has no effect on the revolving lid 6 in its geometric shape. Now, however, the flexible sheet 10 or parts thereof are inclined, as in Fig. 9b shown, creates 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 Kardierspalts. The generated torque M is to be understood in this embodiment as the previously described actuating force F.

Fig. 10 shows a schematic representation of a traveling lid 6 with an embodiment of the inventive device with an actuating force outside a bearing point of the revolving cover 6. In this embodiment, by the force F, which is outside the bearing of the revolving lid 6, respectively outside the drum shield 14 is introduced, a torque M generated 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.

The Figures 11a and 11b show a schematic representation of a moving lid with an embodiment of the inventive device with a Stellkrafterzeugung within the moving lid 6. The illustration in FIG. 11a shows a snapshot of the moving moving lid 6, as it moves through the transport elements 9 and is guided resting on the flexible sheet 10. 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. The FIG. 11b represents an enlargement of the tail of the revolving flat bar. The revolving lid bar 6 is provided with a head end piece 34, which produces the connection of the revolving lid 6 on the one hand to the transport element 9 and on the other hand via a shoe for flexible arch.

In the traveling lid 6 are one or more electromagnets 50. The electrical supply 51 is in FIG. 11b

exemplified, wherein sliding contacts 52 are used, which are arranged between the drum plate 14 and the Kopfendstück 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

2

fiber material

3

licker

4

drum

5

Revolving flats

6

revolving flat

7

idler pulley

8th

Direction of rotation of the drum

9

transport element

10

flexible bend

11

doffer

12

outlet section

13

Kardenband

14

drum shield

15

Lid garnish

16

Drum set

20

Axle of the pulley

21

guide

22

guide surface

23

Direction of movement of the traveling lid

24

carding

25

carding

26

rib

26

flange

27

Direction of movement of the leadership

30

First crossbar

31

Second crossbar

32

Magnet on leadership

33

shoe

34

head end

35

Axis of magnet on guide

36

Magnet on revolving lid

37

Axle of magnet on revolving lid

38

Directions of movement of the leadership

40

First magnet

41

Second magnet

42

operatively connected

43

slide

50

electromagnet

51

Electrical supply

52

sliding contact

A

Center distance between the axes

B

working width

F

force

F1 - F6

restoring forces

G

Tracking force

H

reaction force

M

torque

Claims (15)

1. A revolving flat card (1) with a drum (4) and a revolving flat unit (5) spanning a working width (B) of the drum (4), which comprises circulating revolving flats (6), which are supported on both sides outside the working width (B), wherein the drum (4) and the revolving flat (6) are provided with clothings, which are located opposite one another on a part of the revolution of the revolving flat (6) and thereby form a carding space (24) located between them, characterized in that means for adjusting the carding space (24) in its course over the working width (B) of the drum (4) are provided, wherein the adjustment of the carding space (24) is changeable depending on operating parameters or a revolving flat position.
2. The revolving flat card (1) according to claim 1, characterized in that the means for adjusting the carding space (24) are arranged such that at least one regulating force can be generated on the revolving flat (6) between the bearing points of the revolving flat (6).
3. The revolving flat card (1) according to claim 1 or 2, characterized in that the means for adjusting the carding space (24) are arranged such that a regulating force can be generated inside at least one bearing point of the revolving flat (6) or on the side facing away from the drum (4) of at least one bearing point of the revolving flat (6).
4. The revolving flat card (1) according to claim 2 or 3, characterized in that the regulating force (F) is a mechanically, pneumatically or hydraulically acting force or a combination thereof.
5. The revolving flat card (1) according to claim 2 or 3, characterized in that the regulating force (F) is a magnetically acting force.
6. The revolving flat card (1) according to claim 5, characterized in that a first magnet (32) is arranged on a stationary guide (21) in the direction of movement (23) of the revolving flat (6), and a second magnet (36) is arranged on the revolving flat (6).
7. The revolving flat card (1) according to claim 6, characterized in that the regulating force (F) is adjustable 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 flat (6).
8. The revolving flat card (1) according to claim 5, characterized in that the regulating force (F) is an electromagnetically acting force.
9. The revolving flat card (1) according to claim 8, characterized in that the size of the regulating force (F) can be adjusted by changing the electric power supply of an electromagnet.
10. The revolving flat card (1) according to at least one of claims 2 through 4, characterized in that the size of the regulating force (F) can be controlled depending on the revolving flat position or independently thereof.
11. The revolving flat card (1) according to one of the preceding claims, characterized in that the adjustment of the carding space (24) covers the distance between the clothings (15, 16) lying opposite one another of the drum (4) and the revolving flat (6) and/or the geometric shape of the carding space (24).
12. The revolving flat card (1) according to one of the preceding claims, characterized in that the working width (B) is greater than 1'200 mm, preferably is 1'500 mm.
13. Method for carding fiber tufts with a revolving flat card (1), wherein the revolving flat card (1) has a drum (4) and a revolving flat unit (5) spanning a working width (B) of the drum (4), wherein the revolving flat unit (5) comprises circulating revolving flats (6), which are supported on both sides outside the working width (B), and the drum (4) and the revolving flat (6) are provided with clothings (15, 16), which are located opposite one another on a part of the revolution of the revolving flat (6) and thereby form a carding space (24) located between them, characterized in that the carding space (24) is adjusted in its course over the working width (B) of the drum (4) depending on operating parameters or the revolving flat position.
14. Method according to claim 13, characterized in that the adjustment of the carding space (24) is achieved by a deformation of the revolving flat (6).
15. Revolving flat (6) for use in a revolving flat card (1) according to one of claims 1 through 12, with a rib (26), a flange (27) for attaching a clothing (15), a head end piece (32) for supporting the revolving flat (6), characterized in that the rib (26) or the flange (27) or the head end piece (32) are shaped such that a regulating force (F) or a torque (M) can be introduced for generating a deformation of the revolving flat (6).

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