Carding machine

Abstract

The invention relates to a carding machine with a drum (4), having a drum casing (4a) and two drum bases (4b), wherein the drum (4) is rotatably mounted in a bearing arrangement by means of two pins (4d, 4e). The invention is characterised in that at least one sensor (20) is arranged on the drum casing in order to determine the temperature of the drum casing (4a) inside the drum casing (4a) or in the interior of the drum (4), wherein the at least one sensor (20) is connected to a coupler (24) by means of at least one electrical line (23) or data line, wherein said coupler is designed to transmit the data from the sensor (20) to a controller (30) of the carding machine.

Description

[0001] Title: Teasel

[0002] Description

[0003] The present invention relates to a carding machine with an inlet side for fiber flakes, wherein the carding machine is designed to feed the fiber flakes to a rotating drum by means of at least one licker-in. On the drum, the fiber flakes are opened down to the individual fibers between fixed carding elements and rotating flat bars, aligned, and cleaned. The resulting fiber web is transferred from the drum to a doffer, which is followed by a device for converting the fiber web into a fiber sliver.

[0004] State-of-the-art revolving flat cards essentially consist of a large main cylinder, the drum or tambour, on which fibers are carded by a specific number of revolving flats and fixed carding elements. Depending on the card design, a carding gap size of 3 / 1000" [inch] to 12 / 1000" [inch] can be adjusted. With such small distances between the card clothings, contact between the components can cause severe damage, so the expansion of the drum due to centrifugal force and the thermal expansion of all components must always be observed and continuously recorded. As the drum speed increases and the production of the fibers to be processed increases, the drum temperature also rises. For this purpose, it is necessary to continuously record the actual temperature of the drum in order to indirectly calculate the carding gap using an empirically determined formula.

[0005] According to the state of the art, it is not the temperature of the drum that is measured, but rather the temperature of a fixed aluminum profile positioned very close to the drum. This fixed gusset profile is located in the upper gusset between the drum and the doffer. One or more temperature sensors can be arranged within the fixed gusset profile, distributed across the working width or drum width. The gusset profile heats up in a very similar way to the temperature behavior of the drum as soon as the card is in operation. For the warmed-up operating state, this temperature value is sufficient for determining the carding gap. However, this sufficient accuracy is only suitable for ongoing operation, as long as fibers are being processed and the gusset profile is kept at temperature by the drum. If the material feed is interrupted, the lighter aluminum profile cools down faster than the heavy steel drum.This effect is particularly pronounced during the long cooling phase after the drum is shut down. This results in deviations from the actual conditions in the machine when calculating the carding gap, which can tempt the operator to narrow the carding gap. This can lead to collisions between the clothings of the drum and the revolving flat.

[0006] The object of the invention is to further develop a carding machine in which the temperature of a drum is measured more precisely. The drum can be designed as a tambour, licker-in roller, or doffer.

[0007] This object is achieved starting from a card according to the preamble of claims 1 and with the characterizing features.

[0008] Advantageous developments of the invention are specified in the dependent claims.

[0009] The carding machine comprises a drum with a drum shell and two drum bases, the drum being rotatably mounted in a bearing by means of two pins. Furthermore, the carding machine comprises at least one sensor for determining the temperature of the drum shell, which sensor is arranged inside the drum shell or in the interior of the drum on the drum shell. The at least one sensor is connected by at least one electrical line or data line to a coupler, which is designed to transmit the sensor data to a carding machine controller.

[0010] The invention is based on the idea that direct temperature measurement of the drum shell is more accurate, particularly when the carding machine is moving up and down. The temperature change is detected immediately. For this purpose, the at least one sensor is arranged directly or indirectly on the drum shell, for example via a receiving bushing, so that the sensor has direct contact with the drum shell. Alternatively, the sensor can also be arranged in a guide element or in the receiving bushing, with the temperature of the drum shell then only being transmitted to the sensor via the guide element or the receiving bushing. The sensor can be arranged inside the drum shell or inside the drum on the drum shell. The coupler is designed to transmit the data of the at least one sensor from the rotating drum to a stationary counter element.The coupler therefore does not necessarily have to be located in the area of ​​one of the pins, but can also transmit the data contactlessly to a receiver that is permanently located in the area of ​​the side plate. The electrical cable or data cable can also supply the sensor with electrical energy at the same time. Continuous transmission of the sensor data and the supply of electrical energy is advantageously ensured if this occurs independently of the speed of the drum and the coupler is therefore located in the area of ​​the pins. The at least one electrical cable or data cable can be routed at least partially or completely inside the drum from the sensor to the coupler. If it is routed partially inside the drum to the coupler, the cable is routed along the drum shell to the drum base, passed through it and then connected to the coupler.The advantage is the simple routing of the electrical cable or data cable, at least partially, on the outside of the drum base, which can then also be laid with the sensor when the drum is closed. A closed drum is a carding drum in which a fitter cannot arrange or fasten anything inside the drum with his arms or tools. In this case, the drum bases do not have any recesses, as shown in Figure 4, through which a fitter could reach the interior of the drum with his arms or tools. Consequently, part of the at least one electrical cable or data cable can be routed outside the drum on the drum base from the sensor to the coupler.

[0011] If the control system receives the sensor data on the current temperature of the drum, it is designed to control an actuator in order to adjust the distance of the drum to a carding element (revolving flat, fixed carding element), a separating knife or another drum.

[0012] If at least one electrical cable or data cable is guided within the drum by means of at least one guide element, the electrical cable or data cable is completely protected against environmental influences, such as dust, flying fibers, moisture or during the assembly of other components.

[0013] The at least one sensor can be arranged within the at least one guide element or within a receiving bushing. Both the guide element in the area of ​​the accommodated sensor and the receiving bushing have direct contact with the drum wall. The drum temperature can be transmitted indirectly to the sensor or, in the case of the receiving bushing, directly to the sensor if the sensor is in contact with the drum shell.

[0014] If the sensor temperature is to be transmitted to the control system even when the drum is stationary, the at least one guide element through which the electrical cable or data cable is routed can be arranged with a first end on or within a bore of a journal. The guide element rotates with the journal of the drum according to the drum speed.

[0015] The coupler can be located outside the drum in the area of ​​a journal and can comprise at least one rotating element and at least one stationary element, with the sensor data being transmitted mechanically or inductively from the rotating element to the stationary element. This allows the sensor to be continuously supplied with power, even when the drum is stationary, and the sensor data can be transmitted to the controller.

[0016] If at least one guide element is laid without interruption from a pin to the drum shell, at least one sensor with the electrical cable or the data cable can be laid from outside the drum to its measuring point on the drum shell, even when the drum is closed.

[0017] To prevent a sensor failure or error, at least one sensor is designed redundantly. This means that if the temperature is measured at only one point on the drum shell, at least two sensors are always mounted at that point. If the drum temperature is measured at multiple points on the drum shell, two sensors are not required at one location. Temperature differences, for example, across the working width or across different points on the drum circumference, are not so great that a sensor error or failure cannot be detected immediately.

[0018] The multiple sensors can be distributed across the working width of the card and / or arranged around the card's circumference. This allows a temperature profile of the drum to be determined across the working width and / or temperature fluctuations at individual points on the drum shell to be detected, for example, if these points are located in the main carding zone during full production.

[0019] If the sensor is arranged within at least one guide element, at least a portion of the guide element in which the sensor is located will rest against the drum shell with preload. This allows for easy initial assembly when the drum is stationary, while centrifugal force constantly presses this portion of the guide element against the drum shell as the drum rotates.

[0020] A second end of the guide element can be arranged or fastened in or on the receiving bushing, or fastened to the drum shell. The receiving bushing is preferably firmly attached to the inner drum shell, for example by welding, soldering or screwing. The second end of the guide element can be connected to the receiving bushing, for example by a cone or a screw connection, so that the guide element is fixed at least to one pin and in or on the receiving bushing. Alternatively, the second end of the guide element can also be fastened directly to the drum shell, for example by screwing. If the sensor is not arranged on the drum shell inside the drum, alternatively at least one bore for receiving the at least one sensor can be arranged in the drum shell.Depending on the position of the sensor across the working width, the bore can be designed as a blind hole or as a through hole, whereby the sensor is then clamped or fastened within the bore at the measuring position.

[0021] If multiple holes are arranged in the drum shell to accommodate at least one sensor, their depth can vary across the working width of the drum and / or the circumference of the drum. This also allows a complete temperature profile of the drum to be created.

[0022] Alternatively, at least one guide element can be arranged along the drum shell, with at least two channels for separately accommodating sensors being arranged within the guide element, for example for redundantly arranged sensors. If the channels are arranged with different depths in at least one guide element, the position of the sensors can be varied across the working width of the drum. The arrangement of the holes in the drum shell has the advantage that the electrical cable or data cable does not have to be routed through the pin. Installation is easier from outside the drum. The same can be achieved with a guide element that is laid along the drum shell and the electrical cable is guided through a hole in the drum base to the coupler.

[0023] Further measures improving the invention are described in more detail below together with the description of a preferred embodiment of the invention with reference to the figures.

[0024] They show:

[0025] Fig. 1 is a side view of a schematically illustrated carding machine according to the state of the

[0026] Technology;

[0027] Fig. 2 is a sectional view through a carding drum with a first arrangement of a

[0028] Sensors for determining the drum temperature;

[0029] Fig. 3 is a schematic diagram of an inductive coupler;

[0030] Fig. 4 is a perspective view of the interior of the drum;

[0031] Fig. 4a is a schematic representation of a first arrangement of the sensor in the

[0032] Drum;

[0033] Fig. 4b a detailed view of the receiving socket with the sensor;

[0034] Fig. 5 shows another embodiment of the arrangement and fastening of the sensor in the

[0035] interior of the drum;

[0036] Fig. 5a is an enlarged detail view of a detail of Figure 5;

[0037] Fig. 5b is an enlarged detail view of a detail of Figure 5;

[0038] Fig. 6 shows a further embodiment of the arrangement and fastening of the sensor in the interior of the drum;

[0039] Fig. 7 shows a further embodiment of the arrangement and fastening of the sensor in the drum shell;

[0040] Fig. 8 shows a further embodiment of the arrangement and fastening of the sensor in the interior of the drum;

[0041] Fig. 9 shows a further embodiment of the arrangement and fastening of the sensor in the interior of the drum;

[0042] Fig. 10 shows another embodiment of the arrangement and fastening of the sensor in the

[0043] Interior of the drum. Fig. 1 shows a prior art carding machine in which fiber flakes are guided via a shaft to a feed roller 1, a feed table 2, via several licker-in rollers 3a, 3b, 3c, to the drum 4 or the reel tambour. On the drum 4, the fibers of the fiber flakes are parallelized and cleaned by means of stationary and rotating carding elements. The resulting fiber web is then conveyed via a doffer 5, a doffer roller 6 and several squeeze rollers 8, 9 to a web guide element 10, which forms the fiber web with a funnel 11 into a fiber sliver. The sliver is transferred via take-off rollers 12, 13 to a downstream processing machine or a can 15. The removal of the fibers from the doffer 5 is assisted by a web guide profile 7, which is arranged below the doffer roller 6.Above the doffer roller 6 there is arranged a cleaning roller 6a, with which fibre residues are removed from the doffer roller 6 and fed to a suction device not further designated.

[0044] Figure 2 shows a section through a drum 4 of a carding machine, which has a cylindrical drum shell 4a enclosing a hollow space. The drum shell 4a is closed at both ends by two drum bases 4b, which can be reinforced by ribs 4c. The drum 4 has a first and a second pin 4d, 4e, which extend centrally through the drum bases 4b into the drum 4 and are fastened to the drum bases on the inside. The pins 4d, 4e can be fastened to the drum bases 4b, for example, by welding, gluing, or mechanical screwing, etc.

[0045] The drum 4 shown in Figure 2 is designed, for example, as the carding machine's spool. The invention can also be used for the doffer 5 or the licker-in rollers 3a, 3b, 3c, since the above-described structure of these drums is identical despite different dimensions. With these drums, it is not the carding gap to the revolving flat that is relevant, but rather the distance between the drums 3a, 3b, 3c, 4, 5 to ensure the transfer of the fibers or fiber web. Since the distance between these drums can also be adjusted, knowing a precise temperature level is important for the carding machine's productivity.

[0046] At least one of the pins 4d, 4e can be designed to receive fastening elements and / or guide elements 21, which are designed to lead at least one electrical line and / or a 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 the data from the sensor 20 can be recorded outside the drum 4. The guide element(s) 21 can be designed as a tube through which the at least one electrical line and / or data line can be led. A first end of the guide element 21 can be arranged on or in the pin (4d or 4e) and a second end of the guide element 21 is arranged in the region of the drum shell 4a.This second end may have a receiving bushing 22 which is connected to the drum shell 4a in the interior of the drum 4, for example by screwing, gluing, welding or soldering.

[0047] The at least one sensor 20 can preferably be designed as a resistance thermometer (temperature sensor), wherein the change in the temperature to be measured leads to a change in the electrical resistance in this sensor 20. This requires two electrical lines, the ends of which are guided to the outer or end face of a pin 4d, 4e or in this area. The pin 4d, 4e has a central bore in which the guide element 21 is arranged and fastened. The guide element 21 can protrude through the bore of the pin 4d, 4e into the area of ​​a coupler 24, or the guide element 21 is fastened in or on the pin 4d, 4e and the electrical line 23 or data line is routed through the bore of the pin 4d, 4e to a coupler 24. There, the ends of the electrical lines 23 are connected, for example, inductively to a controller 30.An inductive coupler 24 can be arranged and used here, the rotating element of which is connected to the pin 4d, 4e. The stationary counter element can be arranged on the bearing housing or side plate of the card. Via the inductive connection, the data of the at least one sensor 20 is transmitted to the controller 30, while the sensors 20 are simultaneously supplied with electrical energy. Alternatively, the coupler 24 can also be designed as a mechanical solution, enabling electrical contact via, for example, sliding contacts. Preferably, at least two sensors 20 can always be arranged within the drum 4 to ensure redundancy. If a single sensor 20 were to fail unnoticed or deliver incorrect data, this could immediately lead to total damage to the card. If the temperature is only measured at one position in the interior of the drum 4, at least two sensors 20 are preferably arranged at the same location.The measuring position of the sensor 20 is always located within the drum 4 on or in the drum shell 4a, whereby this can vary in its arrangement, across the circumference, and across the position along the working width. Preferably, the at least one sensor 20 is arranged in the center of the drum shell 4a, i.e., across half the working width, since this is where the maximum temperature is present. Preferably, several sensors 20 can be arranged, which can be distributed over the drum circumference and / or across the drum width, i.e., the working width.

[0048] Figure 2 shows the arrangement of a guide element 21, which can be designed as a tube or hollow profile made of steel or plastic. The guide element 21 can accommodate at least one data line or electrical line 23 in its cavity, with which contact is established between the at least one sensor 20 and the coupler 24 on the pin 4d. The guide element 21 can be arranged and connected at a first end on or within the pin 4d, and at a second end to a receiving bushing 22, which is connected to the drum shell 4a in the interior of the drum 4. The temperature of the drum shell 4a is thus conducted either directly or indirectly via the receiving bushing 22 into the sensor 20. In this exemplary embodiment, the receiving bushing 22 is arranged in a first quarter of the working width of the drum 4, starting from the drum base 4b.

[0049] Figure 3 schematically shows the connection of a sensor 20 by means of an electrical line 23 or data line to an inductive coupler 24, which is designed to transmit the data from the sensor 20 to the controller 30. At the same time, the sensor is inductively supplied with electrical energy via the electrical line 23.

[0050] Figure 4 shows a perspective view of the interior of the drum 4, as well as Figures 4a and 4b showing the fastening of the sensor 20. A receiving bushing 22 is welded to the drum shell 4a in the interior of the drum 4. Alternatively, the receiving bushing 22 can also be screwed into a blind hole in the drum shell 4a by means of a thread. A connecting element 25 in the form of a screw connection connects the guide element 21, which is designed as a tube, to the receiving bushing 22. Two sensors 20, 20' are arranged inside the receiving bushing 22, and their electrical line 23 or data line is guided through the guide element 21 to a coupler 24 (not shown) through the first pin 4d. Since the drum bases 4b have round cutouts, the installation and possible replacement of defective sensors 20 is not a problem. Without cutouts in the drum bases 4b, the guide element 21 is designed toto accommodate the sensors 20 with the electrical cable 23 and to mount them up to the area of ​​the receiving socket 22. This requires guide elements 21 that are continuous - i.e., uninterrupted - from the pin 4d, 4e to the measuring position on the drum shell 4a, so that the sensor(s) 20 can be placed and mounted in the tip of the guide element 21 or in a connected receiving socket. When the drum 4 rotates, the sensor is pressed against the drum shell 4a by centrifugal force. A rigidity of the electrical cable 23 or data cable used is advantageous, as this reinforces the fixation of the sensor(s) 20 in a predetermined position. Figure 4a also shows the connection of the guide element 21 to a connecting element 25 in the form of a screw connection to a pin 4d, 4e.

[0051] Figures 5 and 5a show a further arrangement for mounting and securing the sensor 20 in the interior of the drum 4. Here, too, a guide element 21 in the form of a tube is connected to a pin 4d. The guide element 21 is bent into a half loop and clamped between a clamping element 26 and a rib 4c. The guide element 21 is subjected to tension such that its end, which accommodates the at least one sensor 20, rests with prestress on the drum shell 4a. This embodiment can also be implemented both with an interior of the drum 4 that is accessible for mounting and with an interior of the drum 4 that is inaccessible for mounting.In particular, by inserting the sensor 20 with the electrical cable into the tubular guide element 21, sufficient force is present for the sensor 20 to rest permanently on the end of the tubular connecting element in the area of ​​the drum shell 4a without the need for adhesive or connecting compound. In this exemplary embodiment, the installation of a receiving bushing 22 on the drum shell 4a is not necessary. In this exemplary embodiment, the sensor 20 is arranged centrally on the drum shell 4a, in the middle of the working width. In Figure 5a, one end of the guide element 21 with the at least one sensor 20 integrated therein rests under pretension on the drum shell 4a. In Figure 5b, the end of the guide element 21 with the at least one sensor 20 integrated therein is fastened to the drum shell 4a by means of a fastening element 27.The fastening element 27 can penetrate through the drum shell 4a or be screwed into the drum shell 4a from the interior of the drum 4.

[0052] Figure 6 shows an expanded embodiment of Figure 5, which differs only in that the guide element 21 is clamped to the opposing ribs 4c on both sides of the drum bases 4b. The guide element 21 rests in an arc on the drum shell 4a, with the end of the guide element 21 being clamped to a rib 4c that lies opposite the first pin 4d, to or in which the guide element 21 is fastened. The guide element 21 can again be tubular, with the tubular interior in this area, which rests on the drum shell 4a, being designed such that the sensor 20 ends there when inserted. The guide element 21 can thus be provided in this area with a plug or closure against which the sensor 20 rests.The advantage of the embodiment shown in Figures 5 and 5a is that, during rapid carding, the free end of the guide element 21 is not displaced within the carding machine due to acceleration. This can also be avoided by securing the free end of the guide element 21 in Figure 5b to the drum shell 4a with a fastening element 27. The fastening element 27 can be designed as a screw, or the guide element 21 can be secured to the drum shell 4a over a greater length with an adhesive. Alternatively, soldering, welding, or alternative fastening of the tubular guide element 21 is also possible.

[0053] Figure 7 shows a further embodiment of the arrangement and fastening of the sensor within the drum shell 4a, in which a bore 28 is arranged, for example, as a blind hole. In contrast to the previous embodiments, the sensor is not arranged in the drum interior, but is integrated into the drum shell 4a. The electrical line can be located on an outer side of the drum base 4b, for example, up to the area of ​​one of the pins 4d, 4e, so that a connection can be made to a coupler 24, via which the sensor data is transmitted to the controller 30. The bore

[0054] 28 can be arranged multiple times around the circumference of the drum 4. For example, three bores 28 can be arranged distributed around the circumference of the drum 4, which are then distributed at a circumferential angle of 120° to one another. A first bore 28 can have a depth of one quarter of the working width, the second bore 28 a depth of half a working width, and the third bore 28 a depth of three-quarters of the working width of the drum 4 - each arranged from one side of a drum base 4b. This allows multiple sensors to be arranged offset across the working width of the drum 4 and / or distributed simultaneously around the circumference of the drum 4, so that a very precisely determined temperature profile is achieved.In this embodiment with several distributed sensors, the redundant occupancy of a measuring position with at least two sensors is also not necessary, since the failure or malfunction of a sensor can be detected immediately and the card can be switched off.

[0055] In Figure 8, a tubular guide element 21 is laid from the first pin 4d along a rib 4c in the interior of the drum 4 into a region of the drum shell 4a. The electrical line 23 is laid within this guide element 21. A further second guide element 29 is arranged across the working width of the drum 4 on the drum shell 4a. The second guide element 29 can be designed as a rectangular or round tubular profile made of aluminum or steel and can be attached to two opposing ribs 4c. In the middle, the second guide element

[0056] 29 is slightly bent under pre-tension so that the center always rests against the drum shell 4a. The at least one sensor 20 can be arranged in any position across the working width within the second guide element 29. It is preferably always arranged where the guide element 29 - possibly with pre-tension or fastened to the drum shell 4a - is in direct contact with the drum shell 4a. Since in this exemplary embodiment the first and second guide elements 21, 29 are mounted at a distance from one another within the drum 4, assembly is only possible with access to the interior of the drum 4. The first guide element 21 therefore only accommodates the electrical line 23, and the second guide element 29 at least one sensor with the continuing electrical line, which are inserted laterally and fixed in place.The second guide element 29 can preferably have a plurality of grooves or separate chambers in its hollow space, so that a plurality of sensors 20 are arranged in a groove or chamber, each distributed across the working width. Instead of the rectangular guide element 29 shown here, this can also be designed as a tube. As an alternative to the embodiment with the first guide element 21, the drum 4 can have a bore in the drum base 4b through which the electrical line 23 or the data line of the sensor is guided on the outside of the drum base 4b to the coupler 23. This also enables installation without access to the interior of the drum 4.

[0057] Figure 9 shows a further continuous arrangement of the guide element 21 from the first pin 4d along a rib 4c to the center of the drum shell 4a. In this exemplary embodiment, the guide element 21 is tubular and allows the sensor 20 to be positioned up to the end of the guide element 21 when the interior of the drum is closed. The free end of the guide element 21 can be clamped into a conical receiving bushing 22 or screwed using a connecting element 25. The receiving bushing 22 can be welded or soldered to the drum shell 4a, for example. As in all previous exemplary embodiments, at least one sensor 20 can be arranged at a single position in the interior of the drum 4 or in the drum shell 4a, or several sensors 20 can be arranged distributed over the drum circumference and / or across the working width.

[0058] In Figure 10, a receiving bushing 22 is arranged and fastened to the drum shell 4a in the region of a drum base 4b. In this exemplary embodiment, the receiving bushing 22 can accommodate two sensors 20, 20'. Within the receiving bushing 22, the cavities are filled with a thermal paste into which the sensors 20 are inserted. The electrical line 23 is guided through a tubular guide element 21, wherein the guide element 21 is again arranged along a rib 4c and is fastened thereto. The sensors 20 measure the temperature of the drum shell 4a in an outer region of the working width of the drum 4. Here, it can be seen that the two sensors 20, 20' are designed redundantly. Other technical solutions for monitoring a sensor for errors are possible within the scope of the invention.In this embodiment, the electrical line 23 can also be guided through a bore in the drum base 4a from the outside along the drum base 4a to the coupler 24, so that the guide element 21 is not required here.

[0059] Reference symbol

[0060] 1 feed roller

[0061] 2 dining tables

[0062] 3a, b, c licker-ahead

[0063] 4 drums

[0064] 4a Drum shell

[0065] 4b Drum base

[0066] 4c rib

[0067] 4d first cone

[0068] 4e second pin

[0069] 5 customers

[0070] 5a set

[0071] 6 Pick-up roller

[0072] 6a cleaning roller

[0073] 7 Fleece guide profile

[0074] 8 Squeeze roller

[0075] 9 Squeeze roller

[0076] 10 fleece guide element

[0077] 11 funnels

[0078] 12 Take-off roller

[0079] 13 Take-off roller

[0080] 14 Fixed carding element

[0081] 15 cans

[0082] 20 sensors

[0083] 21 Guide element

[0084] 22 socket

[0085] 23 electrical cable

[0086] 24 couplers

[0087] 25 connecting element

[0088] 26 clamping element

[0089] 27 Fastening element

[0090] 28 Hole

[0091] 29 second guide element

[0092] 30 Control

Claims

AMENDED CLAIMS received by the International Bureau on 11 January 2024 (11.01.2024) 1. A carding machine with a drum (4) which has a drum shell (4a) and two drum bases (4b), wherein the drum (4) is rotatably mounted in a bearing by means of two pins (4d, 4e), having at least one sensor (20) for determining the temperature of the drum shell (4a), which sensor is arranged inside the drum shell (4a) or in the interior of the drum (4) on the drum shell (4a), wherein the at least one sensor (20) is connected by means of at least one electrical line (23) or data line to a coupler (24) which is designed to transmit the data of the sensor (20) to a control (30) of the carding machine, wherein the at least one electrical line (23) or data line is guided completely within the drum (4) from the sensor (20) to the coupler (24), characterized in that the at least one electrical line (23) or data line is guided by means of at least one guide element (21, 29) within the drum (4) and that the at least one guide element (21) is arranged with a first end on or within a bore of a pin (4d, 4e) 2. Card according to claim 1, characterized in that a part of the at least one electrical line (23) or data line is guided outside the drum (4) on the drum base (4b) from the sensor (20) to the coupler (24).

3. Card according to claim 1, characterized in that the at least one sensor (20) is arranged within the at least one guide element (21) or within a receiving bush (22).

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

5. Card according to claim 1, characterized in that the at least one guide element (21) is laid without interruption from a pin (4d, 4e) to the drum shell (4a).

6. Card according to claim 1, characterized in that the at least one sensor (20) is designed redundantly.

7. Card according to claim 1, characterized in that several sensors (20) are distributed over the working width of the card and / or arranged over the circumference of the card.

8. Card according to claim 1, characterized in that at least a part of a guide element (21, 29) rests with pre-tension on the drum shell (4a).

9. Card according to one of the preceding claims, characterized in that a second end of the guide element (21) is arranged or fastened in or on the receiving bush (22), or is fastened to the drum shell (4a).

10. Card according to claim 1, characterized in that at least one bore (28) for receiving at least one sensor (20) is arranged in the drum shell (4a).

11. Card according to claim 10, characterized in that a plurality of bores (28) for receiving at least one sensor (20) are arranged in the drum shell (4a), the depth of which bores vary in the working width of the drum (4) and / or the arrangement of the bores (28) varies over the circumference of the drum (4).

12. Card according to claim 1, characterized in that at least one guide element (21, 29) is arranged along the drum shell (4a), wherein at least two channels for separately receiving sensors (20) are arranged within the guide element (21, 29).

13. Card according to claim 12, characterized in that the channels have a different depth in at least one guide element (21, 29).

Images