Carding machine

Abstract

The invention relates to a carding machine having a drum (4) which has a drum cover plate (4a) and two drum end plates (4b), the drum (4) being rotatably mounted in bearings by means of two journals (4d, 4e). The invention is characterized in that at least one sensor (20) for determining the temperature of the drum cover plate (4a) is arranged inside the drum cover plate (4a) or on the drum cover plate (4a) in the interior of the drum (4), the at least one sensor (20) being connected to a coupler (24) by means of at least one electrical line (23) or data line, the coupler is configured to transmit data of the sensor (20) to a control device (30) of the carding machine.

Description

Technical Field

[0001] The invention relates to a carding machine with a fiber bundle infeed side, wherein the carding machine is designed to feed the fiber bundle to a rotating drum by means of at least one licker-in roller. On the drum, the fiber bundle is loosened into individual fibers between fixed carding elements and a surrounding flat strip, oriented and cleaned. The fiber web produced in this way is transferred from the drum to a doffer, downstream of which a device is arranged for converting the fiber web into a fiber strip. Background Art

[0002] According to the prior art, revolving flat carding machines are known which mainly have a large main drum, a roller or a cylinder, on which the fibers are combed by means of a certain number of revolving flats and fixed combing elements. Depending on the design of the carding machine, the size of the combing gap to be adjusted can be from 3 / 1000" [inch] to 12 / 1000" [inch]. At these small distances between the card clothings, contact of the components can cause considerable damage, so that the expansion of the drum due to centrifugal forces and thermal expansion of all components must always be observed and continuously monitored. With increasing drum speed and the production of fibers to be processed, the temperature of the drum also rises. For this reason, it is necessary to continuously monitor the actual drum temperature in order to indirectly calculate the combing gap using empirically determined formulas.

[0003] Here, according to the prior art, the temperature of the drum is not measured, but the temperature of a fixed aluminum profile positioned very close to the drum. This fixed wedge-shaped profile is arranged in the upper wedge between the drum and the doffer. Inside the fixed wedge-shaped profile, one or more temperature sensors can be arranged dispersedly over the working width or the drum width. As long as the carding machine is in operation, the wedge-shaped profile is heated in a manner very similar to the temperature characteristics of the drum. For the preheated operating state, the temperature value is sufficient to determine the carding gap. However, this sufficient accuracy is only applicable to the ongoing operation, during which the fibers are processed and the wedge-shaped profile is kept at temperature by the drum. If the material supply is interrupted, the lighter aluminum profile cools faster than the heavy steel drum. This effect is particularly evident in the long cooling phase after the drum is turned off. As a result, when calculating the carding gap, there are deviations from the conditions existing in the machine, which may cause the operator to adjust the carding gap narrower, thereby not excluding collisions between the card clothing of the drum and the moving flat plate. Summary of the invention

[0004] The object of the present invention is to further develop a carding machine in which the temperature of the cylinder is measured more accurately. The cylinder can be designed as a cylinder, a licker-in or a doffer.

[0005] This object is achieved by means of a carding machine according to the preamble of claim 1 and by means of the characterizing features.

[0006] Advantageous further developments of the invention are specified in the dependent claims.

[0007] The carding machine has a drum with a drum cover and two drum end disks, wherein the drum is rotatably mounted in a bearing by means of two journals. In addition, the carding machine has at least one sensor for determining the temperature of the drum cover, which is arranged on the drum cover inside the drum cover or in the interior of the drum. The at least one sensor is connected to a coupler by means of at least one electrical line or data line, which is designed to transmit the data of the sensor to a control device of the carding machine.

[0008] The invention is based on the following idea: direct temperature measurement of the drum cover is more accurate, especially when the carding machine is running at an increased speed or decreased speed. Directly detect temperature changes. For this purpose, the at least one sensor is arranged directly or indirectly (for example, via a receiving sleeve) on the drum cover, so that the sensor is in direct contact with the drum cover. Alternatively, the sensor can also be arranged in a guide element or in a receiving sleeve, wherein the temperature of the drum cover is then first transmitted to the sensor via the guide element or the receiving sleeve. The sensor can be arranged in the drum cover, or on the drum cover in the inner space of the drum. The coupler is configured to transmit the data of the at least one sensor from the rotating drum to a fixed matching element. Therefore, the coupler does not have to be arranged in the area of ​​one of the journals, but can also transmit the data contactlessly to a receiver, which is fixedly arranged in the area of ​​the side guard. The electrical conductor or data line can supply electrical energy to the sensor at the same time. When the continuous transmission of sensor data and the supply of electrical energy are carried out independently of the rotation speed of the drum and the coupler is therefore arranged in the area of ​​the journal, the continuous transmission of sensor data and the supply of electrical energy are advantageously ensured.

[0009] The at least one electrical or data line is guided at least partially or completely inside the drum from the sensor to the coupler. If it is guided partially inside the drum to the coupler, the line is guided along the drum cover to the drum end disc and is guided through the drum end disc and then connected to the coupler. The advantage is that the electrical or data line is simply laid at least partially on the outside of the drum end disc, and can be laid together with the sensor even in the case of a closed drum. In this case, the carding machine drum is referred to as a closed drum, in which the fitter cannot arrange or fasten anything inside the drum with his arms or tools. In this case, the drum end disc does not have a recess, which would be indented in the drum. Figure 4 , the fitter can reach the inside of the drum with his arm or a tool through the recess. Therefore, a part of the at least one electric conductor or data line is guided from the sensor to the coupler outside the drum on the drum end plate.

[0010] If the control device receives sensor data about the current temperature of the cylinder, it is designed to control the actuator in order to adjust the distance of the cylinder to the combing element (revolving flat, fixed combing element), the chopping knife or another cylinder.

[0011] If the at least one electrical or data line is guided within the drum by means of at least one guide element, the electrical or data line can be completely protected from environmental influences such as dust, fiber lint, moisture or during assembly of other components.

[0012] The at least one sensor is arranged inside the at least one guide element or inside the receiving sleeve. In this case, not only the guide element is in direct contact with the drum wall in the region of the received sensor, but also the receiving sleeve is in direct contact with the drum wall. In this case, the drum temperature can be transmitted to the sensor indirectly or, in the case of the receiving sleeve, directly when the sensor is in contact with the drum casing.

[0013] If the temperature of the sensor is transmitted to the control device even when the drum is stationary, the at least one guide element for guiding the electrical or data line can be arranged with a first end on the hole of the journal or inside the hole of the journal. In this case, the guide element rotates with the journal of the drum according to the drum speed.

[0014] The coupling is arranged outside the drum in the region of the journal and has at least one rotating element and at least one fixed element, wherein the data of the sensor are transmitted mechanically or inductively from the rotating element to the fixed element. Thus, even when the drum is stationary, the sensor can always be powered and the data of the sensor can be transmitted to the control device.

[0015] If the at least one guide element is laid uninterruptedly from the journal to the drum shell, at least one sensor can be laid even in a closed drum, which sensor has electrical or data lines from the drum exterior to its measuring point on the drum shell.

[0016] In order to avoid a malfunction or error of the sensor, the at least one sensor is designed to be redundant. This means that when measuring the temperature at only one location of the drum casing, at least two sensors are always mounted at this location. If the temperature of the drum is determined at multiple locations on the drum casing, it is not necessary to provide two sensors at one location. For example, temperature differences at different locations over the working width or on the drum circumference are not so great that a malfunction or error of the sensor cannot be immediately detected.

[0017] A plurality of sensors can be distributed over the working width of the carding machine and / or arranged on the circumference of the carding machine. Thus, it is possible to determine the temperature profile of the cylinder over the working width and / or to ascertain temperature fluctuations at individual locations of the cylinder shell, for example, when these locations are arranged in the main carding zone during full production.

[0018] If the sensor is arranged inside the at least one guide element, at least a portion of the guide element in which the sensor is arranged rests with prestress against the drum shell. Thus, a simple first assembly is achieved when the drum is stationary, wherein as the drum rotates, this portion of the guide element is always pressed against the drum shell due to the centrifugal force.

[0019] The second end of the guide element can be arranged or fastened in or on the receiving sleeve or on the drum shell. The receiving sleeve is preferably fixedly fastened in the inner drum shell, for example by means of welding, brazing or screwing. The second end of the guide element can be connected to the receiving sleeve, for example by means of a cone or a screw connection, so that the guide element is fixed at least on the journal and in or on the receiving sleeve. Alternatively, the second end of the guide element can also be fastened directly to the drum shell, for example by means of a screw connection.

[0020] If the sensor is not arranged inside the drum on the drum casing, at least one hole can alternatively be provided in the drum casing for accommodating at least one sensor. Depending on the position of the sensor over the working width, the hole can be designed as a blind hole or as a through hole, wherein the sensor is supported or fastened inside the hole at the measuring position.

[0021] If a plurality of holes are provided in the drum shell to accommodate at least one sensor, the depth of these holes can vary over the working width of the drum and / or over the circumference of the drum. This also makes it possible to construct a complete temperature profile of the drum.

[0022] Alternatively, at least one guide element is arranged along the drum cover, wherein at least two channels are arranged inside the guide element for separately accommodating sensors, for example for redundantly arranged sensors. If channels with different depths are arranged in at least one guide element, the position of the sensor can be varied over the working width of the drum. The arrangement of the holes in the drum cover has the advantage that the laying of electrical or data lines does not have to be through the journal. Assembly from the outside of the drum is simpler. The same can be achieved with a guide element, i.e., the electrical lines are laid along the drum cover and are guided through the holes through the drum end plate to the coupler. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Further measures that improve the invention are explained in more detail below together with the description of preferred exemplary embodiments of the invention with reference to the drawings.

[0024] In the figure:

[0025] Figure 1 shows a schematically illustrated side view of a carding machine according to the prior art;

[0026] Figure 2 shows a cross-sectional view of a carding machine cylinder having a first arrangement of sensors for determining the cylinder temperature;

[0027] Figure 3 A schematic diagram showing an inductive coupler;

[0028] Figure 4 A perspective view showing the interior space of the drum;

[0029] Figure 4a A schematic diagram showing a first arrangement of the sensor in the drum;

[0030] Figure 4b A detailed view of the receiving sleeve with the sensor is shown;

[0031] Figure 5 Another embodiment of arranging and fastening the sensor in the inner space of the drum is shown;

[0032] Figure 5a Show Figure 5 an enlarged detail view of a detail of;

[0033] Figure 5b Show Figure 5 an enlarged detail view of a detail of;

[0034] Figure 6 Another embodiment of arranging and fastening the sensor in the inner space of the drum is shown;

[0035] Figure 7 Another embodiment of the arrangement and fastening of the sensor in the drum cover is shown;

[0036] Figure 8 Another embodiment of arranging and fastening the sensor in the inner space of the drum is shown;

[0037] Fig. 9 Another embodiment of arranging and fastening the sensor in the inner space of the drum is shown;

[0038] Fig.10 Another embodiment of the arrangement and fastening of the sensor in the drum interior is shown. DETAILED DESCRIPTION

[0039] Figure 1A carding machine according to the prior art is shown, in which a fiber bundle is guided via a shaft to a feed roller 1, a feed plate 2, and via a plurality of licker-in rollers 3a, 3b, 3c to a drum 4 or a cylinder. On the drum 4, the fibers of the fiber bundle are parallelized and cleaned by means of a fixed, circumferential carding element. Subsequently, the resulting fiber web is conveyed via a doffer 5, a stripping roller 6 and a plurality of squeeze rollers 8, 9 to a fiber web guide element 10, which, by means of a collecting bell mouth 11, converts the fiber web into a fiber strip, which is transferred to a subsequent processing device or a can 15 via detaching rollers 12, 13. The fibers are removed from the doffer 5 by means of a fiber web guide section 7 arranged below the stripping roller 6. A cleaning roller 6a is arranged above the stripping roller 6, by means of which fiber residues are removed from the stripping roller 6 and conveyed to a suction device not shown in detail.

[0040] Figure 2 The drum 4 of the carding machine is shown in a sectional view, which has a cylindrical drum cover 4a surrounding a cavity. At the end, the drum cover 4a is closed on both sides by two drum end disks 4b, which can be reinforced by ribs 4c. The drum 4 has a first journal 4d and a second journal 4e, which extend centrally through the drum end disk 4b into the drum 4 and are fastened to the drum end disk on the inner side. The journals 4d, 4e can be fastened to the drum end disk 4b by means of welding, adhesive bonding or mechanical screw connections, etc.

[0041] exist Figure 2 The cylinder 4 shown in the drawing is designed as a cylinder of a carding machine by way of example. The invention can also be used for doffers 5 or licker-in rollers 3a, 3b, 3c, since the above-described structure of the cylinders is identical despite the different dimensions. In these cylinders, it is not the carding gap with the moving flat that is important, but the distance between the cylinders 3a, 3b, 3c, 4, 5 to ensure the transfer of the fibers or the fiber web. Since these cylinders can also be adjusted in terms of their distance to one another, knowing the exact temperature level is very important for the productivity of the carding machine.

[0042] At least one of the journals 4d, 4e can be configured to accommodate a fastening element and / or a guide element 21, which is configured to lead at least one electrical line and / or data line out of the interior of the drum 4, so that at least one sensor 20 for determining the temperature of the drum 4 is arranged in the interior of the drum 4 and data of the sensor 20 can be collected outside the drum 4. A plurality of or one guide element 21 can be configured as a tube through which at least one electrical line and / or data line can be guided. A first end of the guide element 21 can be arranged on or in the journal (4d or 4e) and a second end of the guide element 21 is arranged in the region of the drum cover 4a. The second end can have a receiving sleeve 22, which is connected to the drum cover 4a in the interior of the drum 4, for example by screwing, bonding, welding or soldering.

[0043] The at least one sensor 20 can preferably be configured as a resistance thermometer (temperature sensor), wherein a change in the temperature to be measured results in a change in the resistance in the sensor 20. For this purpose, two electrical conductors are required, the ends of which are guided to the outside or end side of the journal 4d, 4e or into the region of the journal. For this purpose, the journal 4d, 4e has a central hole in which a guide element 21 is arranged and fastened. Here, the guide element 21 can extend through the hole of the journal 4d, 4e into the region of the coupler 24, or the guide element 21 is fastened in or on the journal 4d, 4e and the electrical conductor 23 or data line is laid through the hole of the journal 4d, 4e to the coupler 24. For example, there, the end of the electrical conductor 23 is inductively connected to the control device 30. Here, an inductive coupler 24 can be arranged and used, the rotating element of which is connected to the journal 4d, 4e. The fixed mating element can be arranged on the bearing housing or the side guard of the carding machine. By means of an inductive connection, the data of the at least one sensor 20 are transmitted to the control device 30 on the one hand, and the sensor 20 is supplied with electrical energy at the same time. Alternatively, the coupler 24 can also be designed as a mechanical solution, which can achieve electrical contact by means of, for example, sliding contact. Preferably, at least two sensors 20 can always be arranged inside the drum 4 to ensure redundancy. If a single sensor 20 fails without being noticed or provides wrong data, this can immediately lead to complete damage to the carding machine. If the temperature is measured at only one position in the interior of the drum 4, at least two sensors 20 are preferably arranged at the same position. The measuring position of the sensor 20 is always located on or in the drum cover 4a inside the drum 4, wherein the measuring position can be changed in the arrangement, on the circumference and on the position along the working width. Preferably, the at least one sensor 20 is arranged in the middle of the drum cover 4a, i.e., on half of the working width, because the highest temperature exists here. Preferably, a plurality of sensors 20 can be arranged, which can be distributed on the drum circumference and / or on the drum width, i.e., the working width.

[0044] Figure 2The arrangement of a guide element 21 is shown, which can be designed as a tube or hollow profile made of steel or plastic. The guide element 21 can accommodate in its cavity at least one data line or electrical line 23, with which the contact between the at least one sensor 20 and the coupler 24 at the journal 4d is established. The first end of the guide element 21 can be arranged and connected on or inside the journal 4d, and the second end is connected to a receiving sleeve 22, which is connected to the drum cover 4a in the interior of the drum 4. The temperature of the drum cover 4a is thus conducted to the sensor 20 either directly or indirectly via the receiving sleeve 22. In this embodiment, the receiving sleeve 22 is arranged in the first quarter of the working width of the drum 4 starting from the drum end plate 4b.

[0045] Figure 3 The connection of the sensor 20 by means of an electrical line 23 or data line to an inductive coupler 24 is schematically shown, which is designed to transmit data from the sensor 20 to a control device 30. At the same time, the sensor is supplied with electrical energy inductively via the electrical line 23.

[0046] Figure 4 The interior space of the drum 4 and Figure 4a and 4b The fastening method of the sensor 20 is shown. The receiving sleeve 22 is welded to the drum cover 4a in the internal space of the drum 4. Alternatively, the receiving sleeve 22 can also be screwed into a blind hole in the drum cover 4a by means of a thread. A connecting element 25 in the form of a threaded connection connects the guide element 21 constructed as a tube to the receiving sleeve 22. Two sensors 20, 20' are arranged inside the receiving sleeve 22, and the electrical wires 23 or data lines of the sensors are guided through the guide element 21 through the first journal 4d to the coupler 24 not shown. Because the drum end disc 4b has a circular recess, there is no problem with the assembly and possible replacement of damaged sensors 20. In the absence of the recess of the drum end disc 4b, the guide element 21 is constructed to accommodate one or more sensors 20 with live wires 23 and until they are assembled in the area of ​​the receiving sleeve 22. Assuming that the guide element 21 is designed to extend continuously (i.e. without interruption) from the journals 4d, 4e to the measuring position on the drum cover 4a, one or more sensors 20 can be placed and mounted in the tip of the guide element 21 or in a connected receiving sleeve. When the drum 4 rotates, the sensor is pressed against the drum cover 4a by centrifugal force. The rigidity of the electrical conductors 23 or data lines used is advantageous, thereby strengthening the fixation of the one or more sensors 20 in the predetermined position. Figure 4a Likewise shown is the connection of the guide element 21 to the journals 4 d , 4 e by means of a connecting element 25 in the form of a screw connection.

[0047] Figure 5 and Figure 5a Another arrangement for assembling and fastening the sensor 20 in the interior space of the drum 4 is shown. Here, the guide element 21 in the form of a tube is also connected to the journal 4d. The guide element 21 is bent into a half loop and is clamped and fastened between the clamping element 26 and the rib 4c. Here, the guide element 21 is placed under stress in such a way that the guide element rests with its end that accommodates the at least one sensor 20 against the drum cover 4a with prestress. This embodiment can be realized not only as an interior space of the drum 4 that can be assembled, but also as an interior space of the drum 4 that cannot be assembled. In particular, by pushing the sensor 20 with the electrical conductor into the tubular guide element 21, there is sufficient force to permanently rest the sensor 20 in the area of ​​the drum cover 4a without the need for adhesive or connectors at the ends of the tubular connecting element. In this embodiment, it is not necessary to assemble the accommodating sleeve 22 on the drum cover a. In this embodiment, the sensor 20 is arranged centrally on the drum cover 4a, in the middle of the working width. In Figure 5a In the embodiment, one end of a guide element 21 with at least one sensor 20 integrated therein rests on the drum shell 4a under prestress. Figure 5b In the embodiment, the end of the guide element 21 with at least one sensor 20 integrated therein is fastened to the drum cover 4a by means of a fastening element 27. The fastening element 27 can pass through the drum cover 4a or be screwed into the drum cover 4a from the interior space of the drum 4.

[0048] Figure 6 Show Figure 5 An extended embodiment of the invention is shown, which differs only in that the guide element 21 is clamped and fastened on the opposite ribs 4c on both sides of the drum end plate 4b. The guide element 21 rests on the drum cover 4a in an arc shape, wherein the end of the guide element 21 is clamped and fastened on the rib 4c, which is opposite the first journal 4d and on which the guide element 21 is fastened or in the rib. The guide element 21 can also be configured as a tube, wherein in the region resting on the drum cover 4a, the tubular interior is configured so that the sensor 20 ends there when pushed in. Thereby, the guide element 21 can be provided with a filler or a closure in the region, on which the sensor 20 rests. Figure 5 and 5a The advantage of the embodiment is that, when the carding machine is started quickly, the free end of the guide element 21 will not move in the interior space of the carding machine due to acceleration. This can also be avoided in the following way, that is, by using the fastening element 27 to Figure 5bThe free end of the guide element 21 in the drum cover 4a is fixed to the drum cover plate 4a. The fastening element 27 can be configured as a screw, or the guide element 21 can be fixed to the drum cover plate 4a over a greater length using an adhesive. Alternatively, brazing, welding or alternative fastening of the tubular guide element 21 is also possible.

[0049] Figure 7 Another embodiment of the arrangement and fastening of the sensor inside the drum cover 4a is shown, in which the hole 28 is arranged, for example, as a blind hole. In contrast to the previous embodiment, the sensor is not arranged in the drum interior, but is integrated in the drum cover 4a. The electrical line can run on the outside of the drum end plate 4b, for example into the region of one of the journals 4d, 4e, so that it can be connected here to the coupler 24, via which the sensor data is transmitted to the control device 30. The hole 28 can be arranged multiple times on the circumference of the drum 4. For example, three holes 28 can be arranged dispersedly on the circumference of the drum 4, which holes are then dispersed at a circumferential angle of 120° to each other. The depth of the first hole 28 can be one quarter of the working width of the drum 4, the depth of the second hole 28 can be one half of the working width of the drum 4, and the depth of the third hole 28 can be three quarters of the working width of the drum 4, each hole being arranged starting from one side of the drum end plate 4b. Thus, a plurality of sensors can be arranged staggered over the working width of the drum 4 and / or distributed over the circumference of the drum 4 at the same time, so that a very precise temperature profile can be determined. In this embodiment with a plurality of distributed sensors, it is also not necessary to redundantly occupy the measuring position with at least two sensors, since a stoppage or failure of a sensor can be immediately determined and the carding machine can be switched off.

[0050] exist Figure 8In the embodiment, a tubular guide element 21 is laid from a first journal 4d along a rib 4c in the interior of the drum 4 to the region of the drum cover 4a. An electrical conductor 23 is laid inside the guide element 21. Another second guide element 29 is arranged on the drum cover 4a over the working width of the drum 4. The second guide element 29 can be constructed as a rectangular or round tubular profile made of aluminum or steel and fastened to two opposite ribs 4c. In the middle, the second guide element 29 is slightly bent under prestress so that the center always rests on the drum cover 4a. Inside the second guide element 29, the at least one sensor 20 can be arranged at any position over the working width. Preferably, it is always arranged where the guide element 29, which may be prestressed or fastened to the drum cover 4a, is in direct contact with the drum cover 4a. Since in this embodiment, the first guide element 21 and the second guide element 29 are installed at a distance from each other inside the drum 4, they can only be installed when entering the interior of the drum 4. Thus, the first guide element 21 accommodates only the electrical conductor 23, while the second guide element 29 accommodates at least one sensor with a continuous electrical conductor, which is pushed in laterally and fixed. Preferably, the second guide element 29 can have a plurality of grooves or separate chambers in its cavity, so that a plurality of sensors 20 are arranged in a groove or chamber in a distributed manner over the working width. Instead of the rectangular guide element 29 shown here, the guide element can also be configured as a tube. As an alternative to the embodiment with the first guide element 21, the drum 4 can have a hole in the drum end disk 4b, through which the electrical conductor 23 or data line of the sensor is guided to the coupler 23 on the outside of the drum end disk 4b. Therefore, assembly without entering the drum interior is also possible.

[0051] Fig. 9 Another continuous arrangement of the guide element 21 from the first journal 4d along the rib 4c to the center of the drum cover 4a is shown. In this embodiment, the guide element 21 is tubular and enables the sensor 20 to be positioned at the end of the guide element 21 in the closed interior of the drum. The free end of the guide element 21 can be inserted into a conical receiving sleeve 22 in a clamped manner or screwed by means of a connecting element 25. For example, the receiving sleeve 22 can be welded or brazed to the drum cover 4a. As in all the previous embodiments, at least one sensor 20 can be arranged in the interior of the drum 4 or at a single location in the drum cover 4a, or a plurality of sensors 20 can be arranged dispersedly on the drum circumference and / or on the working width.

[0052] exist Fig.10In the embodiment, the receiving sleeve 22 is arranged in the area of ​​the roller end disc 4b and fastened to the roller cover plate 4a. In this embodiment, the receiving sleeve 22 can accommodate two sensors 20, 20'. Inside the receiving sleeve 22, the cavity is filled with thermal paste, and the sensor 20 is inserted into the thermal paste. The electrical conductor 23 is guided through the tubular guide element 21, wherein the guide element 21 is again arranged along the rib 4c and fastened to the rib. Here, the sensor 20 measures the temperature of the roller cover plate 4a on the outer area of ​​the working width of the roller 4. It can be seen here that the two sensors 20, 20' are constructed redundantly. Within the framework of the present invention, other technical solutions for monitoring sensor errors are possible. In this embodiment, the electrical conductor 23 can also be guided from the outside along the roller end disc 4a through the hole on the roller end disc 4a to the coupler 24, so that the guide element 21 is not required here.

[0053] List of reference numerals:

[0054] 1 Feed roller

[0055] 2 Feed plate

[0056] 3a, 3b, 3c licker-in

[0057] 4 Rollers

[0058] 4a Roller cover

[0059] 4b Roller end plate

[0060] 4c Rib

[0061] 4d First journal

[0062] 4e Second journal

[0063] 5 dolf

[0064] 5a Card Clothing

[0065] 6 Stripping roller

[0066] 6a Cleaning roller

[0067] 7 Fiber web guide section

[0068] 8 Squeeze roller

[0069] 9 Squeeze roller

[0070] 10 Fiber web guiding element

[0071] 11 Collection horn

[0072] 12 Separating rollers

[0073] 13 Separating roller

[0074] 14 Fixed combing element

[0075] 15 cans

[0076] 20 Sensors

[0077] 21 Guide element

[0078] 22 Receiving sleeve

[0079] 23 Electrical wire

[0080] 24 Coupler

[0081] 25 Connecting elements

[0082] 26 Clamping element

[0083] 27 Fastening elements

[0084] 28 holes

[0085] 29 Second guide element

[0086] 30 Control device

Claims

1. A carding machine having a drum (4) with a drum cover (4a) and two drum end plates (4b), wherein: The drum (4) is rotatably supported in a bearing by means of two journals (4d, 4e), and the combing machine has at least one sensor (20) for determining the temperature of the drum cover plate (4a), wherein the at least one sensor is arranged inside the drum cover plate (4a) or on the drum cover plate (4a) in the inner space of the drum (4), wherein the at least one sensor (20) is connected to a coupler (24) by means of at least one electrical conductor (23) or a data line, and the coupler is constructed to transmit data of the sensor (20) to a control device (30) of the combing machine.

2. The carding machine according to claim 1, characterized in that The at least one electrical line (23) or data line is guided at least partially or completely inside the drum (4) from the sensor (20) to the coupler (24).

3. The carding machine according to claim 2, characterized in that The at least one electrical line (23) or part of the data line is guided outside the drum (4) on the drum end plate (4b) from the sensor (20) to the coupler (24).

4. The carding machine according to claim 2, characterized in that The at least one electrical line (23) or data line is guided within the drum (4) by means of at least one guide element (21, 29).

5. The carding machine according to claim 4, characterized in that The at least one sensor (20) is arranged inside the at least one guide element (21) or inside the receiving sleeve (22).

6. The carding machine according to claim 4, characterized in that The at least one guide element (21) is arranged with a first end on a bore of a journal (4d, 4e) or inside a bore of a journal.

7. The carding machine according to claim 1, characterized in that The coupler (24) is arranged outside the drum (4) in the region of the journals (4d, 4e) and has at least one rotating element and at least one fixed element, wherein data of the sensor (20) are transmitted mechanically or inductively from the rotating element to the fixed element.

8. The carding machine according to claim 1, characterized in that The at least one guide element (21) is laid uninterruptedly from the journal (4d, 4e) to the drum shell (4a).

9. The carding machine according to claim 1, characterized in that The at least one sensor (20) is designed to be redundant.

10. The carding machine according to claim 1, characterized in that A plurality of sensors (20) are distributed over the working width of the carding machine and / or are arranged on the circumference of the carding machine.

11. The carding machine according to claim 4, characterized in that At least a portion of the guide elements (21, 29) bears against the drum shell (4a) with prestress.

12. Carding machine according to one of the preceding claims, characterized in that The second end of the guide element (21) is arranged or fastened in or on the receiving sleeve (22) or on the drum shell (4a).

13. The carding machine according to claim 1, characterized in that At least one hole (28) for accommodating at least one sensor (20) is provided in the drum shell (4a).

14. The carding machine according to claim 13, characterized in that A plurality of holes (28) for accommodating at least one sensor (20) are provided in the drum cover (4a), the depth of the holes varying over the working width of the drum (4) and / or the arrangement of the holes (28) on the circumference of the drum (3) varying.

15. The carding machine according to claim 4, characterized in that At least one guide element (21, 29) is arranged along the drum shell (4a), wherein at least two channels for separately accommodating the sensor (20) are arranged inside the guide element (21, 29).

16. The carding machine according to claim 15, characterized in that The channels have different depths in the at least one guide element (21, 29).

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