EP1167591A1 - Transfer factor - Google Patents

Abstract

The carding machine, with a drum and a doffer, has a controlled system to affect the transfer factor i.e. the portion of the fiber mass at the drum clothing which is to be transferred to the doffer on each full drum rotation.. The transfer factor at a carding machine, and the like, is affected by action on the clothing of the drum and/or the doffer, as described in EP403989. The controlled system has one or more actuators. They are activated for at least one operating parameter e.g. the rotary speed of the licker-in; the drum rotary speed; the rotary speed of the doffer; the ratio between the drum and doffer rotary speeds; the gap between the drum and the licker-in and doffer; the position and setting of the fiber/air guides; the position and profile of the lower curved shrouding in relation to the lower section of the drum; the settings in the following carding zone and especially the covering profile and/or the carding elementals in the card production; or the gap between the feed roller and the licker-in. The controlled system to affect the transfer factor can be activated while the carding machine is in operation.

Description

The present invention is concerned with controllable means or methods for influencing the transfer factor in cards, i.e. the proportion of fiber mass in the drum covering, which passes to the customer per drum revolution. In the conventional Cards are often the same textile fibers, e.g. Cotton, Chemical fibers, or mixtures thereof (assortments) processed. The settings the card and the upstream and downstream textile processing machines usually only adjusted once to the corresponding material types or optimized and then no longer changed. Such operating parameter settings are mostly cumbersome and take a relatively long time. For the hiring of Optimal operating parameters of the card or the entire production line are necessary possibly take fiber material samples at different locations and take them partially analyze with complex and time-consuming measuring methods in the laboratory (e.g. the measurement of the staple fiber shortening, number of nits, short fiber content). conventional Cards therefore have the disadvantage that smaller (temporal) deviations in the processed Fiber material qualities cannot be taken into account and corresponding Loss of quality can result in the end products of the process stage (e.g. shortening of staple fibers). This happens because on the one hand you don't have enough can make quick measurements to determine the deviation and on the other hand because a new setting of the card takes too long. On top of that it is nowadays It is no longer economically viable to have a blowroom with an attached carding machine from to adapt in advance to only one specific fiber material. Carding will be today designed to process different types of materials (assortments). A quick one New adjustment of the textile processing machines or adaptation to the new one to be processed Material is therefore an advantage. This requirement of rapid adaptability the card also increases the disadvantages mentioned above. Another disadvantage conventional card is that its transfer factor is not direct and independent can be influenced, although the transmission factor has a significant influence the fiber processing and thus on the processing quality of the card.

The textile industry has only partially recognized the general problem of the adjustability of textile processing machines and especially of cards. DE-A-196-51-893 describes a method and a device in which the staple fiber length and the number of nits are measured on a card. The measured values determined are used to set the operating parameters of the card. To optimize production, the number of nits and the fiber length distribution are determined and linked. Based on this link, a regulation or control specifies the optimal operating parameters. The measurement is carried out online (measurement of the stack diagram and number of nits). The following two operating parameters (manipulated variables) are adjusted: the distance between the sets of covers and the drum (carding gap) and the speed of the drum. The optimal setting values are regulated or determined on the basis of stored characteristic diagrams / characteristic curves which also contain the associated machine setting data. The input data are compared with these maps / characteristic curves. The fiber samples required for evaluation are suctioned off. According to this publication, extraction can take place at the following locations: on the customer, on the doctor roller, on the squeeze rollers, or on the licker-in. The stack, which can be measured online, is measured using a fibrograph (fiber beard curve).
In the document DE-A-196-51-891 a method and a device on a card is further described, in which the fiber stack is measured twice. At the entrance and at the exit of the card, partial quantities of the fibers are removed, for example by suction. The fiber reduction amount is determined from the difference values of the measurements. Depending on the value, those working elements that influence the carding gap are readjusted or optimized (influencing the carding intensity). Fiber samples are taken at the following locations: on the customer, on the doctor roll, before or after the squeeze rolls, on the reel or on the licker-in. The samples are evaluated automatically and online, ie the stack diagram is determined from the values. The evaluations serve as input data for the regulating and control devices, which determine the optimal machine setting data. The optimal machine setting data with regard to the carding gap are passed on online to those working elements or actuators of the carding machine which control the distance between the clothing of the drum and the cover. Here too, the control and regulating devices have stored characteristic curves. A fibrograph and a fiber shortening sensor are provided for fiber length measurement.
Another prior art, CH 629 544, describes adjusting means which can adjust the distance between two roller surfaces. The document mentions that the distance between the rollers plays a role in the transfer of the nonwoven from one roller to the next. According to this state of the art, the surface speeds or the type of clothing also have a corresponding influence. The actuating means are controlled by a control means. The control means is connected to a measuring element which can measure the speed of a roller. From this, the device determines the effect of the centrifugal force and from this the distance between the rollers. Another measuring device can be provided in the writing, which measures the temperature of the rollers. The control means controls the adjusting means so that the distance between the rollers can be kept constant within narrow tolerances despite heat and centrifugal force. The device according to this document wants to solve problems, especially in the start-up phase of the card.

Another state of the art that deals with the measurement and determination of fiber occupancy dealing with rollers is in US 4272868, US 4075739 and CH 627 Find 497.

In contrast, the invention is based on the object of a method and a device to create the adjustability and thus the processing of the fibers significantly improved in the card.

The problem is solved by the characterizing features of the claims. The inventive method and its device make it possible to optimally control the processing of fibers or flakes in the card. The fiber flow is controlled by controlling the transmission factor. This means that it is determined how many drum revolutions the fibers go through on average before changing to the customer. The fibers or flakes are processed in this way only as long and as intensively as necessary. This optimizes the processing of the fibers in the card, while maintaining the least possible fiber damage (fiber shortening) or formation of nits. In addition, the device according to the invention and its method allow a quick and automatic adaptation of the fiber processing to fluctuations in the fiber material quality (fluctuations caused by different material quality or properties of the individual fiber bales), in general to new fiber materials to be processed (i.e. acceleration of the adjustment of the machines to new ones) Assortments) and of course to a larger or smaller production (fibers to be processed per unit of time). Although the transmission factor has a significant influence on fiber processing, this size was never recognized and used in the prior art as an adjustable operating parameter. In particular, the idea of the invention to provide a controllable means for influencing the transmission factor was previously unknown. For example, it has been known since CH 629 544 that the distance between two rollers influences the transfer factor. However, the idea of generally controlling the transmission factor with the aid of an agent is unknown, ie consciously changing it. According to the invention described here, such a control is particularly suitable for influencing and optimizing the processing of the fibers in the card.
These improvements are made possible by the features of the claims according to the invention.

"Insert new section"

In a further variant of the invention, the fiber material properties are additionally still measured (especially with the help of an online measurement). The measurement data are evaluated by an evaluation system so that the controllable mean or the controllable means set an optimal transfer factor on the card can / can.

The invention accordingly sees a card with a drum and a customer which is a controllable means of influencing the transfer factor, i.e. the proportion of fiber mass in the drum covering, that per drum revolution on the customer passes, contains.

The invention is particularly preferred in combination with a device in which the number of nits and / or the fiber length (stack) is measured and evaluated before and / or after a working element. A nit sensor and a fiber length measuring device are provided accordingly and carry out the measurements (the fiber length measuring device taking a small amount of fiber as a sample). In addition, a regulation / control is provided, which receives the named measured values for fiber length and / or number of nits from the sensors as input variables and determines optimized machine setting data therefrom. Here, too, the regulation / control preferably works with stored characteristic maps or data records. The determined machine setting data or parameters are output to one or more means controlling the transfer factor of the card. Actuators which influence the number of nits and / or the fiber stack of the textile processing machine are preferably also controlled. This is to be understood to the extent that several actuators or means can be controlled or regulated in combination in order to change one or more settings on the machine. In a further embodiment of the inventive concept, it is also conceivable that the measurements are carried out on upstream or downstream working elements. A very important element of the invention is that this regulation or control can take place online and automatically, ie during operation, without external intervention by the operating personnel. Of course, semi-automatic variants are also conceivable, in which the sensors or the control system draws the operating personnel's attention to a recommended adaptation of the transmission factor and any other operating parameters, and the latter still have to agree to an adaptation, for example by pressing a button.
The invention is also applicable to clutter. The transmission factor can be controlled by individual or a combination of means. The means or actuators that influence or control the transmission factor can adjust entire areas. For example, the entire sub-carding zone, ie the entire arch with all profiles is adjusted. The lower carding area is the lower area of the card which, viewed in the direction of rotation of the drum, lies between the tongue and the licker-in.

The inventive concept therefore includes the following devices, methods and uses:
A card or card with a reel and a customer which contains a controllable means for influencing the transfer factor. The transfer factor indicates how high is the proportion of fiber mass from the drum covering that is transferred to the customer per revolution of the drum. This means that the transfer factor indicates what percentage of the fiber mass on the reel is transferred to the customer with each revolution of the reel.

The idea of the invention also includes the fact that this controllable means is the set the drum and / or the customer. This influencing the Garnish can preferably be realized according to EP 403989.

According to the inventive concept, the controllable means can be one or more Include actuators that change at least one of the following operating parameters: The speed of the licker-in, the speed of the reel, the speed of the customer, the ratio of drum speed to customer speed, the distance between reel and customer, the distance between reel and licker, the Position and position of the fiber-air guide element (also in the technical jargon Called "tongue"), in the sub-carding zone the distance of the round arch and the associated Profiles on the reel, the settings in the postcarding zone, in particular of the convertible top profiles and / or carding elements, the distance between the feed roller and Licker, or the production of the card.

The invention generally also includes the method of using a card or card to provide a controllable means that influences the transmission factor.

According to the device according to the invention, the inventive idea also includes the associated method that the controllable means one or more actuators comprises which change at least one of the following operating parameters that Speed of the licker-in, the speed of the reel, the speed of the customer, the ratio of drum speed to speed taker, the distance between Reel and customer, the distance between reel and licker who Position and position of the fiber-air guide element, the so-called tongue, in the sub-carding zone the distance of the arch and the associated profiles to the reel, the settings in the postcarding zone, especially the convertible top profiles and / or Carding elements, the distance between the feed roller and the licker-in, or the production the teasel.

A particularly recommended variant of the method according to the invention or the device is influencing the transmission factor during operation to let the card or card take place (online).

A procedure on a card or card, in which before and / or after a working element the card or a upstream or downstream textile processing machine the number of nits and / or the fiber length (stack) is determined, with a regulation / control is provided, which the values for fiber length and / or Nits as input values and from this an optimal transfer factor destined for the card, with controllable means shot at the regulation / control to set the transfer factor of the card. The determination of The length of the fiber, the staple and the number of nits are measured using special measuring devices and sensors, which preferably allow online evaluation. Such devices are known from the prior art and are subject to constant Development. These measuring devices are not discussed in the following, because they are not the subject of the invention.

A conventional belt drive can be used to change the speed of the licker-in (s), but the use of a frequency converter is preferred. The term "transmission factor indicates what percentage of the fiber mass on the reel is transferred to the customer with each revolution of the reel. A transmission factor of 20% means, for example, that 20% of the fibers on the reel change to the customer per revolution. In other words, each fiber runs an average of five times with the drum (and is carded) before it is picked up by the customer.Of course, the inventive concept also includes the possibility that the controllable means or the actuator, which changes the transmission factor, consists of several individual ones In general, the term "actuator" in the entire patent specification also means several means. For example, an actuator can include several (mechanical) adjustment mechanisms with the associated motors and possibly the associated frequency converters or electronic controls auc h the fact that the transmission factor depends on several settings / parameters and can therefore also be influenced by several actuators. For example, when changing the transmission factor, several actuators can be involved at the same time, e.g. actuators that change the spacing between licker-in or drum-out, or change the distance between the feed roller and licker-in, or actuators that can adjust the speeds of the drum or taker (or the ratio of the speed of the drum to the speed of the consumer). The transmission factor is also influenced by other factors. This includes in particular the type of fiber, the set production and the type of card clothing, as well as their sharpness. According to the invention, further actuators can be used for all these factors. In particular, a sensor can determine the sharpness of the sets and an actuator according to the invention can improve the sharpness of the sets. The actuator can thus also represent a grinding device or generally be another maintenance element. Such grinding devices or maintenance elements are described in further patent documents of the applicant.
The production of the card (ie fiber mass delivered per unit of time per sliver) is ultimately determined by the sliver weight, ie the weight per unit length of the card sliver, and the outfeed speed of the card sliver. The speed of the card sliver is in turn directly proportional to the rotational speed of the customer. In most cases, the customer is powered by its own motor. In the case of a card, there is an effort to produce a strip with a predetermined, constant strip weight, so that the strip weight must not be changed. Because the production is equal to the outlet speed x belt weight and the belt weight should not be changed, the production is determined solely by the outlet speed and thus by the circulation speed of the customer. The sliver weight itself is determined by the weight of the wadding and the basic warpage, the ratio of the peripheral speed of the customer to that of the feed roller (ie sliver weight equals wadding weight multiplied by the effective warpage in the card). Assuming the requirement for a constant strip weight, the speed of the feed roller is thus also indirectly determined by the peripheral speed of the customer. In order to keep the sliver weight constant, it has long been customary in the carding field to take measures to keep the lap weight (weight of the lap per unit length) in the feed device constant. Small variations in the wad weight of the wadding template fed to the card feeding device are attempted to be compensated for with small changes in the feed roller speed (change in the basic warping). Short-term fluctuations in the weight of the cotton wool in front of or in the feed device of a card are recognized by a corresponding measuring device, whereupon the speed of the feed rollers is adjusted accordingly via a control system (including actuators). This regulation / control is referred to in the prior art as short-term correction. In addition to this first option, a so-called long-term correction is usually also provided. The long-term correction has the purpose, as mentioned above, of keeping the strip weight at a constant value. For long-term correction, the belt weight is usually measured at the output of the card and the peripheral speed of the feed roller is adjusted accordingly (ie the effective warpage is regulated). This ensures that long-term deviations in the belt weight can be corrected. The long-term correction is usually supplemented by the short-term correction. This addition is made because the long-term correction can only detect deviations when they have already arisen and because the large distance between the feed roller and the customer, as well as the storage capacity of the reel, means that it is not able to compensate for short-term fluctuations in the wad weight , Examples of such regulations / controls and correction devices can be found, for example, in the documents DE 29 12 576, EP 383 246 and US 4,275,483. By influencing the transmission factor according to the invention, one is also able to supplement the short-term regulation.
As mentioned before, in practice the production of the card is always controlled by the speed of the sliver, hardly by the sliver weight (which should remain constant). The production of the card also influences the quality of the sliver, ie the outfeed speed also has an influence on the sliver quality. These interactions must be taken into account by the controls. Regardless of this, the speeds of the rotating work elements (drum, licker-in, pick-up, feed roller etc.) must adapt to the sliver's outfeed speed. In such cases, frequency converters or equivalent gear ratios are used as actuators, which control the speed of the drive motors. The actuators can in turn be controlled via associated control units. These control units can carry out their own evaluation and can be connected both to the corresponding measuring devices and to central control units, which regulate and control the processes and production in the entire blow room and card shop. It would of course also be conceivable, if not usually sensible, to influence the production of the card by means of actuators which change the strip weight. This could be particularly useful if the card has to process new ranges and other sliver weights are desired due to the subsequent processing of the sliver. A change of the card or card to the new belt weight would be quicker and easier to do. So far, no attempt has been made to adjust or control the transmission factor when influencing the production and the processing quality of the card or card. The endeavor (see CH 629 544) was more in the opposite direction, ie the transmission factor was constant and therefore part of the inventive concept of combining influencing production quality with regulating and controlling the transmission factor. As mentioned, the outfeed speed can have an impact on the card sliver quality. In such a case, it would be conceivable, for example, to fully or partially compensate for the loss of quality in the fiber sliver caused by the increased production or run-out speed, so that the carding process is gentler (less staple fiber shortening).

Another way to influence the tape weight would be to see one to provide additional run-out regulation or stretch after the card run-out, which the sliver warps to the desired sliver weight. More corresponding Combinations are also with others that influence the number of nits or the stack Actuators conceivable. These actuators can also be used within others, the carding machine or cardboard upstream or downstream, textile processing machines.

5. The method according to the invention also includes, as a variant, the possibility that the regulation / control additionally the optimized machine setting data on at least an actuator influencing the number of nits and / or the stack of an upstream or downstream one Textile fiber processing machine outputs, in particular to an actuator an upstream blowroom machine such as an actuator on one of the cards or Carding upstream filling shaft (influence of the cotton pad by the Hopper). The term "actuator" also includes the associated means.

7. The regulation / control receives in a further variant of the invention which determines the values for fiber length and / or number of nits as input variables and from this the optimal transmission factor.

For the method according to the invention it can also be provided that the regulation / control the optimal transmission factor based on specified or stored maps or data sets determined. Of course they can enumerated methods according to the invention in a card also in combination with one another be applied.

According to the invention, the methods described also include the corresponding devices.
For example, a device in a textile fiber processing machine, in particular a card, carding machine, in which the number of nits and / or the fiber length (stack) is determined before and / or after at least one working element of the same machine or an upstream or downstream textile processing machine, with a regulation / control It is provided which receives the above-mentioned values for fiber length and / or number of nits as input variables according to a method described above and from this the optimal transfer factor for the card and this to at least one means or actuator controlling the transfer factor.

Examples of the possible implementations of the invention will now be given with reference to the figures be explained. These examples represent only a few of the numerous design options The invention idea and the claims are limited by no means only on the explanations according to the figures.

Figure 1 shows schematically the fiber flow through a work element of the carding machine or blow room. Under the term "work element", both entire textile processing machines, such as cards, cards, cleaners in the blow room, etc. be understood as well as individual elements of a textile processing machine, For example, beaters, feeders, carding segments (stationary or in Revolving cover), drum, maintenance elements, buyers, outlet regulations, separating or scraper blades, grate bars, opener and feed rollers, exhaust air and suction systems etc. The measuring devices, which before and after the work element connected to the textile fiber flow can measure properties of the textile fibers. These can be single or multiple properties, especially the fiber or the staple fiber length (single fiber measurement is preferred) or the number of nits. The measuring devices are only shown schematically, i.e. the devices can also comprise several sensors, which simultaneously have several fiber properties measure up. The measuring technology used does not really play a role in the invention Role. However, it is conceivable that the measuring device optically reflects the fiber properties determined or small fiber samples taken from the fiber flow for measurement. The Measurement results are then from the measuring devices of an evaluation system transmitted. This evaluation system is capable of optimized setting values or parameters of the work element. This can, for example, be saved Records or maps happen. Under certain circumstances, this evaluation system connected to other similar evaluation systems. This is before An advantage wherever there are interactions with other work elements can, e.g. for working elements of the same textile processing machine. In certain circumstances it is also conceivable that the evaluation systems with a central control unit connected, which controls the production of the entire blow room and card shop. In this case, the central control unit can influence the evaluation systems own, or on their output signals. The evaluation systems can send signals to individual or multiple control units connected to actuators are. Under certain circumstances, these actuators can even become upstream or downstream work elements belong. The actuators influence the processing of the fibers in the working element. Under certain circumstances, the "actuators" can use several means exist, e.g. from gear and drive motor. One or more of these actuators represent, for example, controllable means, which the transmission factor of Can change card. The working elements in this case would be the drum and the customer.

FIG. 2 shows a possible application of the device according to the invention or Procedure shown on the feeding device of a card. The conventional feeding device 1 leads over a feed roller 2 and a swiveling or adjustable feed trough 3 the fiber material to a licker-in 4. from there the fiber material is attached the drum 5 passed to the card. Of course, they are also devices with several, e.g. three pioneers possible. In this exemplary device Measuring devices 6 are provided at two points, from which fiber samples are taken and be analyzed. The measuring devices themselves are not the subject of the invention. As shown in FIG. 2, they can consist of individual units or from a central measuring device, which take fiber samples at several points can. The measuring device can measure individual or multiple fiber properties. For example, a measuring device could consist of a combination of sensors which can measure the fiber length (pile) and the number of nits. The two measuring devices 6 pass the determined fiber properties to an evaluation system 7 further. The evaluation system 7 is able to use the parameters obtained optimal operating parameters of individual or multiple work elements determine. It therefore takes over the local regulation and control of these work elements. It is also conceivable that the individual measuring devices 6 in the evaluation system 7 are integrated. The evaluation system 7 is in this example also in connection with a central control unit 8, which is the evaluation system and can influence their output signals. In this central control unit 8 it can be the central control unit of the entire blow room or carding system act or just the central control unit of the respective machine. The central one Control unit 8 can be connected to several such evaluation systems 7 stand and coordinate the interaction (not shown in the figure). The evaluation system 7 also registers the clamping force in this example via a sensor 8 F the feed trough on the feed roller, as well as the clamping distance d over one Sensor 9. The evaluation system 7 determines on the basis of the input values mentioned the optimal operating parameters, in this example the clamping distance d, the clamping force F and the distance between feed roller and licker-in. At the exit of the evaluation system 7 are the signals corresponding to the optimal operating parameters to the controls 10 of the actuators 11 and 12, or directly to the actuator 13 (Actuators shown schematically). The controllers 10 register the input signal and set the actuators 11 and 12 to the correct values. The Actuator 11 is used to set the clamping force F, while actuator 12 is the clamping distance d can change. The distance between feed roller and licker is from the evaluation system 7 controlled directly via the actuator 13. The exact technical Interaction between the evaluation system, control and actuators is for the invention not essential. The presence of a central control unit is also important for the invention is not absolutely necessary. It is important that the evaluation system corresponding machine setting data and then to the corresponding Passes on actuators that affect the number of nits and / or the stack of the machine.

Figure 3 is largely identical to Figure 2, it was only by another Application of the device according to the invention supplemented. The expansion includes in the example according to FIG. 3, a further evaluation system 14. This evaluation system 14 is connected on the one hand to the same measuring device 6 on the licker-in 4 as that Evaluation system 7. It receives the same measured values from it. On the other hand, it is Evaluation system 14 connected to a second measuring device 15 on the drum 5. The evaluation systems 14 and 7 are also connected to one another. she exchange data with each other and can therefore interact with each other. The evaluation system 14 optimizes via a controller 16 (e.g. a frequency converter) and an actuator 17 (drive) the speed of the licker-in 4. This happens primarily due to the measurement values that the evaluation system receives from the measurement devices 6 and 15 receives. In second line, the evaluation system 14 is the speed of the licker-in 4 also adapt on the basis of those signals which they receive from the Evaluation system 7 receives. In the example in FIG. 3, the two evaluation systems are 7 and 14 coupled to each other, but only the evaluation system 7 is connected to the central one Control unit 8 connected. In another version, it goes without saying it is also conceivable that the individual evaluation systems are not directly connected to one another are all in communication with each other via the central control unit 8 stand. The central control unit can be used in the optimization process of the individual evaluation systems intervene and influence it. The task of the central control unit it is to coordinate the whole system or to coordinate the evaluation systems. According to FIG. 3, the evaluation system 14 is also able to use a further control 18 (e.g. further frequency converter) and an actuator 19 (e.g. electric motor), adjust the speed of the drum 5. This adjustment can on the one hand optimization of the operating parameters apply. On the other hand, the change can also just a simple production adjustment. To do this, the evaluation system 14 directly or indirectly (as shown in Figure 3) with the central control unit be connected. The central control unit can therefore not only interact coordinate the individual evaluation systems (e.g. specify processing quality), but can also control production.

FIG. 4 shows a further application of the invention to a card or card, in which primarily the transmission factor is optimized. An evaluation system 20 is connected to the actuators 22 via a plurality of controls 21, which control the speeds of the licker-in 4, the drum 5 and the take-off 23. The evaluation system 20 can also set the distance between the consumer 23 and the drum 5 via the controller 24 and the actuator 25 (only shown schematically). Such a device can also be provided with respect to the licker-in (not shown for the sake of clarity), ie a controller and one or more actuators allow the distance between licker-in 4 and drum 5 to be set. A further controller 26 is provided, which can adjust the position of the fiber-air guide element 28 via actuators 27 (also shown only schematically). The controlled work elements all have an influence on the transmission factor. The evaluation system 20 controls the setting of the working elements, so that a optimales- r impact is generated on the transmission factor. The evaluation system 20 is here also connected to the central control unit 8 and to a plurality of measuring devices 29 which can determine the number of nits and / or the fiber length. Since the production of the machine (amount of fiber processed per unit of time) has an influence on the transmission factor, the production specification of the central control unit 8 also influences the transmission factor. If necessary, the evaluation system 20 can compensate for this influence by adapting the work elements accordingly. Here, too, the sensors 29 permit constant control of the fiber processing and thus targeted intervention by the evaluation system in the event of changes in the processing quality of the working elements.

A further possibility of applying the invention is shown in FIG. 5. The example corresponds largely of Figure 4, only that the evaluation system 20 with the outlet device 30 is connected. The outlet device 30 regulates the tape outlet or the sliver weight of the sliver at the outlet of the card or card with the help of built-in drafting system 30a. The outlet device 30 is only schematic in FIG shown because it is also not the subject of the invention. In another variant, which is not shown in the figures, the drafting system 30a can also be placed on the belt deposit be arranged. The evaluation system 20 also receives measured values from the outlet device 30 transmitted (e.g. the tape weight or the CV value). Appropriate Controls and measuring devices are here part of the outlet device 30 considered and were therefore not shown in Figure 5. It is also conceivable that the outlet device 30 is directly connected to the central control unit 8 and not as shown in FIG. 5, via the evaluation system 20. Furthermore are the evaluation system 20 and the central control unit 8 directly with one connected to another evaluation system 31. The evaluation system 31 controls and regulates 32 working elements, which the shown card or card are upstream. The evaluation system 31 can also to an upstream blowroom machine (e.g. an opener, a cleaner, a coarse cleaner, a fine cleaner, a deduster, a mixer) or to one Filling shaft (which may be equipped with additional opening or cleaning elements is) belong. The evaluation system 31 controls the connections 32 individual or several working elements of the associated textile processing machine (via actuators, not shown).

In FIG. 5, the evaluation system 31 is connected upstream of the evaluation system 20. Of course, it is also conceivable and part of the inventive concept that actuators are also can be influenced by downstream textile processing machines. The Evaluation system 31 could therefore just as easily follow the evaluation system 20 be and corresponding working elements of downstream textile processing machines influence.

In the last figure 6 a possible, assembled cleaning line is shown schematically shown with attached card. Individual machines can match the previous one Figures correspond, but can also differ. The blowroom includes in Different processing stages in the example shown: I. The opening, II. the Coarse cleaning, III. mixing, IV. fine cleaning, V intensive cleaning or - opening, and VI. carding. Each of these processing stages has at least one Textile processing machine which contains one or more evaluation systems 43. The evaluation systems 43 each evaluate the data they receive from measuring devices on the textile processing machines (not shown) or from before or downstream evaluation systems. The evaluation is also carried out by the Signals of the central control unit 8 influenced. Control the evaluation systems 43 and regulate the associated work elements on the basis of the input values obtained (only shown schematically via the connecting lines) and set the optimal machine settings on. The evaluation systems 43 are linked to one another. This on the one hand, to the respective machine settings or processing intensity of the Coordinate fibers. On the other hand, by measured values (fiber length or number of nits) of to receive upstream or downstream measuring devices. The evaluation systems are also connected to the central control unit 8. This has primarily Task to control and coordinate the entire system of evaluation systems. It can also specify the parameters to be observed for each evaluation system or influence them for the optimization of the entire blowroom line. In the second It can also reduce the production (amount of fiber to be processed per unit of time) control the whole line. The central control unit can use a monitoring system 44 communicate with the plant operators. The operator can be the specifications for fiber processing of the entire system or individual machines Enter 44 via the monitoring system. This system can be used by the operating personnel also on adjustments to the operating parameters or on quality fluctuations draw attention to the processed fiber material. It is further conceivable, the monitoring system 44 also with other data and information systems to link or integrate this into it. As an example, the data and Information system called "SPIDERweb" by the applicant.

The inventive idea can be implemented particularly well if the in the figures described processes take place "online". That means the measurements, evaluations and controls take place continuously during operation. The goal is one if possible short reaction time between the occurrence of a change in the fiber flow (or Fiber property) and the appropriate influencing of the work element or elements receive. An important factor here is the performance of the measuring devices: The faster they can measure and evaluate a fiber property, the shorter is the total response time of the system.

The invention is not limited to the explicitly mentioned possibilities and embodiments limited. These variants are intended as a suggestion for the person skilled in the art to implement the idea of the invention as cheaply as possible. Of the described embodiments are therefore easily advantageous applications and combinations derivable, which also reflect the inventive concept and through this application should be protected. Many of the features disclosed in the description are claimed in combination in the following claims. But it would also be conceivable to claim individual features of the description for themselves.

Claims (7)

A card with a drum and a customer, characterized in that there is a controllable means for influencing the transmission factor, ie the proportion of fiber mass in the drum covering which is transferred to the customer per drum revolution. A card according to claim 1, characterized in that the agent can influence the clothing of the drum and / or the customer. A card according to claim 2, characterized in that the clothing is influenced according to EP 403989. A card according to claim 1, characterized in that the controllable means comprises one or more actuators which change at least one of the following operating parameters, the speed of the licker-in, the speed of the drum, the speed of the customer, the ratio of drum speed to speed The customer, the distance between the drum and the customer, the distance between the drum and the licker-in, the position and position of the fiber-air guide element, in the sub-carding zone the distance of the round sheet and the associated profiles to the reel, the settings in the post-carding zone, especially the convertible top profiles and / or carding element the production of the card, or the distance between the feed roller and the licker-in. Method on a card, characterized in that a controllable means is available which influences the transmission factor. A method according to claim 5, characterized in that the controllable means comprises one or more actuators which change at least one of the following operating parameters, the speed of the or the licker-in, the speed of the drum, the speed of the customer, the ratio of drum speed to customer speed , the distance between the drum and the taker, the distance between the drum and the licker-in, the position and position of the fiber-air guide element, in the sub-carding zone the distance of the round sheet and the associated profiles to the reel, the settings in the post-carding zone, in particular the convertible top profiles and / or carding elements, the production of the card, or the distance between the feed roller and the licker-in. Method or device according to one of the preceding claims, characterized in that the transmission factor is influenced during the operation of the card.

Images