EP1158078B1 - Capteur pour la distance de travail de garnitures de cardage ou pour ajuster ladite distance - Google Patents

Capteur pour la distance de travail de garnitures de cardage ou pour ajuster ladite distance Download PDF

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Publication number
EP1158078B1
EP1158078B1 EP01118063A EP01118063A EP1158078B1 EP 1158078 B1 EP1158078 B1 EP 1158078B1 EP 01118063 A EP01118063 A EP 01118063A EP 01118063 A EP01118063 A EP 01118063A EP 1158078 B1 EP1158078 B1 EP 1158078B1
Authority
EP
European Patent Office
Prior art keywords
carding
distance
control unit
card
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01118063A
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German (de)
English (en)
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EP1158078A2 (fr
EP1158078A3 (fr
Inventor
Jürg Faas
Christian Sauter
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication date
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Publication of EP1158078A2 publication Critical patent/EP1158078A2/fr
Publication of EP1158078A3 publication Critical patent/EP1158078A3/fr
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Publication of EP1158078B1 publication Critical patent/EP1158078B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/28—Supporting arrangements for carding elements; Arrangements for adjusting relative positions of carding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2321—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by moving liquid and gas in counter current
    • B01F23/23211—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by moving liquid and gas in counter current the liquid flowing in a thin film to absorb the gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23762—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4317—Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
    • B01F25/43172—Profiles, pillars, chevrons, i.e. long elements having a polygonal cross-section

Definitions

  • the invention is concerned with a regulation for influencing the on-line "Carding gap", i.e. without interrupting the work of the card.
  • the invention is in particular, but not exclusively, for use in the revolving flat card designed.
  • the invention also relates to a sensor, with which the working distance of Card clothing (also called “carding gap”) can be measured, i.e. the effective distance of the tips of a set from one of the sets opposite machine element.
  • the latter element can also have a set, but could instead by a guide surface having shuttering segment are formed.
  • the invention is particular for measuring the working distance between the reel and the covers of one Revolving lid aggregate designed, but is not limited to this.
  • the carding gap is decisive for the carding quality.
  • the carding gap is the distance between a set and one of the sets opposite element.
  • the size (width) of the carding gap is one essential machine parameters, which both the technology (the Fiber processing) as well as the running behavior of the machine.
  • the carding gap is set as closely as possible (it is measured in tenths of a millimeter) without the risk a "collision" between the work elements. For even processing To ensure the fibers, the gap must cover the entire working width of the Be the same as possible.
  • the working width of the conventional Cardboard revolving card is approximately one meter, with wider cards proposed have been.
  • the carding gap is fundamentally influenced by two factors, namely the Machine settings on the one hand and the condition of the clothing on the other.
  • the most important carding gap of the revolving card is in the Main carding zone, i.e. between the drum and the revolving cover assembly. This gap has been using a so-called flexible arch for decades set.
  • the adjustment work requires specially trained maintenance personnel and the machine cannot continue to run during the reset. The hiring therefore usually only occurs when the machine is re-hinged or with one Set service instead, i.e. after working intervals of a few months to two Years. It is known that the carding work by "on-line" setting the Machine elements could be "optimized” in that the inevitable Status changes in the sets at least partially by the corresponding Adjusting the machine settings can be compensated.
  • DE-C-29 48 825 proposes (column 7, lines 15 to 22) a space (with "a” to be measured directly in the card. From the description of this distance "a” (Column 4, lines 55 to 57) it is not possible to determine exactly whether it is the Working distance in the aforementioned sense, or not. Hence missing all information about how to achieve the desired result.
  • a measuring sensor should be provided in the garnished area.
  • the sensor generates a measuring field that extends in the direction of one set, the "height" of the sensor compared to the other set is predetermined. It's unclear how that System should react to changes in the second set (e.g. wear) (see Fig. 2 and Fig. 4C of DE-A-42 35 610).
  • a “set” consists of a large number of individual projections (“tips”) that protrude from a support surface into the working area of the card (see manual der textile manufacture, Volume 2: Cleaning and Carding - The Textile Institute, Author: W. Small). These peaks have the highest possible “density”, yet do not form any continuous area that can be scanned as such
  • the working distances between the sets of a modern card are very high small (you measure it in tenths of a millimeter) and you strive to reduce it further.
  • the working width of the card i.e. the width of the garnished areas, where fibers where possible should be processed evenly
  • the Working distance should be the same across the entire working width.
  • At least one set that is adjacent to the working distance is in motion, mostly both.
  • the space in the card is scarce.
  • This invention is based on findings on the subject of "sensors” that it is only then it is possible to deduce the effective working distance if this distance "from the side "(the working width) is scanned. This is because of the changeability of the distance to be measured - you have to observe it in a direction that is transverse stands for "direction of change”.
  • a touch probe that extends from side to side across the entire working width is desirable is effective, although of course you have to work without contact.
  • Such Requirement can only be met with one beam, e.g. with a beam of light, especially with a laser beam.
  • the beam could pass through the work area be directed in part by those adjacent to the working distance Elements is scattered (or "held"), the degree of dispersion or the remaining light is used as a measure of the distance to be measured.
  • a relatively robust device will not be able to "penetrate" the work area, i.e. it can only sample the conditions in the side zones of the work area. If these conditions are representative of the entire work area, can thereby solving the whole task.
  • the results from a page zone can at best be supplemented by results by other means won, e.g. by a method according to DE-A-42 35 610. Finally, it can also prove to be useful in solving only one subtask.
  • a relatively robust device that is only suitable for observing a side zone e.g. comprise a camera that cooperates with an evaluation that a Image analysis enables.
  • a possible problem is that, as already mentioned, a set (also from the side) does not form a continuous (closed) surface, which could make image analysis considerably more difficult. This could cause this problem be defused that the "aperture" of the camera (whether mechanical or electronic) so slow compared to the speed of movement of the clothing elements is chosen so that the elements in the resulting image are (sufficient) form a closed surface.
  • the same effect could be achieved in that sequentially snapped images are placed on top of each other to analyze the Composite image to create what with an electronic evaluation without further ado is possible. It is important to digitize the image signals and store them - the corresponding facilities should preferably be provided in the evaluation.
  • EP-C-384 297 and DE-A-42 35 610 deal mainly with the problem of Measuring sizes that are important for the assessment of a carding gap.
  • a regulation for the carding gap is mentioned in both documents, but none concrete proposals for implementation can be found in it.
  • DE-A-41 15 960 sees a system according to which the continuous adjustment based on a (quality) monitoring of the product of the card.
  • EP-A-627 508 also deals with the problem of the measuring system, but shows also in FIGS. 12 and 13 proposals for the actuators that are used to reset Machine elements could be used.
  • This aspect of the invention provides a card with a set, one of these Set opposite element and a controllable actuator to the Set the carding gap between the clothing and the element.
  • the card shows also a programmable controller that can act on the actuators.
  • the card has a sensor system which is used to obtain at least one measured value is arranged, which is in connection with the carding gap, wherein appropriate signals are supplied to the control.
  • the control arranged in such a way that it receives or elaborates data related to are in the state of the clothing.
  • these elements become so through the programming with each other linked that the carding gap under given working conditions ("Framework conditions") based on the measured values supplied by the sensors the controller is programmed to override the controller can set if the framework conditions are no longer met.
  • the control can also be programmed such that the carding gap is based on Control signals can be changed by the controller, at most without the measurement values supplied by the sensor system. In other words, it is Control programmed in such a way that it allows the regulation to apply as long as that of the Measured values delivered by sensors appear "plausible”. If the plausibility is not more is given, the control can switch off the control and, possibly, thereby take control of the adjustment yourself.
  • the controller is programmed to be a "Delivery limit" defined for the scheme, causing an undesirable reduction the carding distance (e.g. due to a measurement error, due to an evaluation error or because of a communication error).
  • the sensor system can work according to the known principles, e.g. according to DE-C-29 48 825, or EP-C-384 297, or DE-A-42 35 610, or DE-A-41 15 968.
  • sensor technology works according to the principles of the aforementioned sensor technology, according to which the Carding distance is scanned contactlessly from the side of the work area.
  • the actuators can also work according to existing principles, e.g. to DE-C-29 48 825, or EP-A-627 508, or (in the preferred embodiment) according to the EP Application No. 96 101 466 dated February 2, 1996.
  • the set mentioned can be wound on the reel and the one to be regulated or the carding gap to be controlled can be in the main carding zone (between the Drum set and the cover sets) must be available.
  • a known known revolving card e.g. the card C50 the Applicant, shown schematically.
  • the fiber material is in the form of dissolved and cleaned flakes fed into the chute 2, from one Briseur 3 (also called licker-in) adopted as a wadding, a drum (or drum) 4 and through the cooperation of the drum with a Set of 5 revolving covers dissolved and cleaned.
  • the covers of the revolving cover set 5 through a suitable drive system of the revolving cover unit Deflection rollers 6 along a closed path (in the same direction or in the opposite direction to Direction of rotation of the drum).
  • Nonwovens are removed by a customer 7 and in one of different Rolling existing outlet section 8 formed into a sliver 9.
  • This Card sliver 9 is cycled from a sliver storage 10 into a transport can 11 Coils filed.
  • the angular range of the drum circumference, which the revolving cover aggregate directly faces, can be called the "main carding zone", in which the largest Part of the carding work done.
  • the angular range between the licker-in 3 and the Revolving lid aggregate can be used as a "pre-carding zone” and the angular range between the Revolving cover unit and the customer 7 referred to as “post-carding zone” become.
  • the angular range between the customer 7 and the Licker 3 can be referred to as "sub-carding zone”.
  • the invention is concerned especially with measuring the carding distance in the main carding zone and other figures show this zone only. However, the invention is not based on limited this application, it can also be used to measure the distance of the Tambourgamitur used by other, opposing elements, such as finally briefly explained.
  • the revolving cover set 5 comprises flat rods, which are not shown individually in FIG. 1, but in Fig. 2 are indicated with the reference numeral 13.
  • Each flat bar is with one Garnish strips 14 provided in the embodiment according to FIG. 2 as "semi-rigid" or flexible set is formed (see the above-mentioned manual, volume 2, page 52).
  • the drum 4 also carries a set 15, which is an all-steel set with teeth 16 is executed.
  • the (opposite) directions of movement are indicated by the arrows indicated, the flat bars 13 also in the reverse direction could move (in the same direction).
  • the area AB between the cylindrical surface 17 of the drum 4 and the outer surface 18 formed by the flat bars 13 referred to herein as the "workspace".
  • a flat bar 13 is in his "Working position" when its set 14 extends into the work area AB.
  • the radial depth of the working area AB can be used when designing the machine be determined, taking into account certain operating influences. Such influences are, for example, the operating speed of the drum, which the Expansion of the reel under the influence of centrifugal force, and the Heat generation or cooling (if available), which changes in affect the working elements under the effects of operating temperatures.
  • the depth of the work area AB is in itself of less importance for the Quality of the carding work as the "carding distance" (or the "carding gap") KA between the tips of the clothing 14, 15.
  • the carding distance KA is the depth of the working area AB because the sets of surfaces 17, 18 run out, but it is also influenced by the wear, which is at the tips itself arises while the card is in operation. This wear occurs on Partly directly from the processing of fibers, but partly also through the Grinding, which must be carried out periodically to achieve the predetermined quality of the To ensure carding work over the duration.
  • FIG. 3 again shows the cylindrical surface 17 of the drum 4 and the Shell surface 18 of the working positions of the flat bars 13 and that over the whole Working width KB of the card.
  • the working width KB of a card conventional today Processing of cotton or fibers with an appropriate pile length is about 1 meter.
  • the wires 20 and teeth 16 of the sets 14, 15 are also partially in Figure 3 shown to show the carding distance KA again schematically can, it should be noted that the proportions of the sizes in the figure distorted had to be in order to enable the display at all.
  • the carding distance in The main carding zone of a revolving flat card is approximately 0.2 to 0.25 mm today.
  • Figure 3 has been assumed that the tip height of both sets and the Depth of the working area AB are constant over the entire working width KB. This In practice, assumption is not necessarily correct.
  • the card according to FIG. 4 additionally comprises a laser 22 .mu.m on one side S1 to generate a laser beam 24 which passes from side to side of the card through the Work area AB is directed.
  • the laser 22 is located on the other side S2 opposite a receiver 26, which sends an output signal to an evaluation 28 Depends on the intensity of the receiving light beam 24.
  • the Evaluation 28 can be designed according to various principles, as follows is explained jointly for both versions.
  • Figures 5 and 6 show the laser beam 24 "in cross section", each with individual Teeth 16 of the drum set and individual wires 20 of the flat bar sets. It It is assumed in these figures that the beam 24 is round in cross section, but what is not essential to the invention. It is also assumed that the beam 24 in the Room (opposite the card frame, not shown) remains stationary. Figures 5 and 6 differ with regard to the carding distance - the distance KAI is in FIG. 5 significantly smaller than the distance KAII in FIG. 6, because in the latter case the teeth 16, 20 have "regressed" to beam 24 due to wear.
  • FIG. 5 a significant proportion of the beam cross-section is through the teeth 16, 20 "blocked", so that a corresponding portion of the beam 24 is scattered ("held") by the side surfaces of the clothing tips and not can penetrate to the receiver 26. If you consider that neither the tips 16 of the drum set 15 still the tips 20 of the cover sets 14 in rows, but rather staggered, spread over the working width, it becomes clear that the Laser beam 24 can practically only penetrate through the distance KA and that the beam largely above the envelope G and below the envelope T. is wiped out.
  • FIG. 6 shows a significantly smaller part of the beam cross section scattered through the sets, so that the perceived by the receiver 26 Radiation intensity is much higher.
  • test results would of course be due to movements of the beam compared to that Frame (the sets) or the receiver can be falsified in relation to the beam. Such movements could e.g. due to shocks or vibrations caused. Such disturbances are usually short-lived be, while a change in the carding distance is relatively slow.
  • the evaluation can be designed accordingly, steep signal changes can e.g. be filtered out. This can also affect the response of the system Tufts of fibers, particles such as shell parts and individual pieces that break through the envelope Peaks to be avoided.
  • This version represents an “electronic teaching", which is based on the effective Carding distance over the entire working width.
  • the laser 22 can be of one Driver stage (not shown) are excited, the beam 24 continuously or periodically can be generated. In the latter case, the laser 22 and the receiver 26 a common controller (not shown) can be provided so that they can be synchronized with each other.
  • FIG. 7 shows a second embodiment, the general arrangement also here corresponds to that of Figure 4 and the same reference numerals have been used.
  • a camera 30 on the side of the card in the amount of Work area AB provided.
  • a light source 32 can be provided, but this is not absolutely necessary is necessary because the camera effectively only shows the edge of the working width can. If there is too little light in this border area, the same can be used
  • a light source (a flash lamp, not shown) can be provided on the side of the card.
  • the camera 30 takes a snapshot of the one opposite it Edge area, the image obtained by suitable, known Means 34 (only shown schematically) digitized and the resulting signal (a sequence of "bits") is stored in a buffer memory 36.
  • the signal can by evaluating 28 predetermined patterns using today's conventional means the image analysis can be checked. The patterns are described below with reference to FIGS. 8 and 9 explained in more detail.
  • a camera can be provided on both sides of the card become.
  • Figure 8 shows schematically the teeth 16 'of a part from the outer wire winding the drum 4 (not shown in Fig. 8).
  • the envelopes T and T ' differ in any case in that the curve T' only is formed by the edge teeth 16 ', while many tips of the set 15 to Envelope T contribute. If, however, the marginal teeth 16 'for the employment relationships are representative of the entire width AB, the envelopes T and T 'can be effective are considered identical.
  • FIG. 9 shows schematically the "image section" (or the “viewfinder") 40 of the camera 30 represents, as well as the edge teeth 16 'and edge wires 20', which when opening the panel are in the field of view of the camera 30.
  • the "aperture” can be a mechanical one Device, but can alternatively be formed by an electronic device that changes the state of the camera 30 to take a snapshot enable.
  • the frame 40 is shown as square, but this is not the case for the invention Meaning is.
  • the wires 20' form an envelope curve G 'and the carding distance KA is given by the distance between the envelopes T ', G', which by the image analysis can be determined.
  • Figures 10 and 11 each show the envelopes G (G ') and T (T'), which according to the one or the other of the methods described and created in an "image” are recorded (whereby this picture consists at most of "bits”).
  • the two figures show two ways to “analyze” or evaluate the images.
  • 10 is a "fictitious card theory” provided, the evaluation of so many "leaves” B given thickness between the envelopes "inserts” until the distance thereby is filled.
  • the number of sheets B recorded indicates the distance KA.
  • Fig. 11 the evaluation places a "scale” S on the image, from which the distance KA can be read can.
  • FIG. 12 now shows three options for evaluating the results of the evaluation 28 recycle.
  • the distance determined is shown in a display 43 shown, e.g. as a number or even as a (scaled) figure, which must be interpreted by the user.
  • This variant is e.g. when setting the Card during assembly is of great use because it gives objective values that are independent of the fitter (or his leaf gauge).
  • the determined distance is compared with a comparator 45 (for example via a keyboard 47) predetermined limit value, so that a display or an alarm can be generated when a tolerance is reached, or is exceeded.
  • the limit value can be set by the end user (e.g. by the spinning master) entered and the resulting "on-line" monitoring is useful when determining the time for maintenance (e.g. grinding or Re-garnish), but also to indicate malfunctions by the staff should be examined.
  • the determined distance is fed to a control 49, where it is compared with a predetermined target value, so that in the event of a deviation A from Setpoint an actuator 50 can be operated to the position of the flat bars compared to the reel and thus the deviation compensate.
  • a control 49 where it is compared with a predetermined target value, so that in the event of a deviation A from Setpoint an actuator 50 can be operated to the position of the flat bars compared to the reel and thus the deviation compensate.
  • the regulation is not based on the application of the electronic teaching according to FIGS. 4 and also not on the use of a measuring device at a single measuring point limited, although for the sake of simplicity only one Show measuring point.
  • a measuring device at a single measuring point limited, although for the sake of simplicity only one Show measuring point.
  • Each measuring device can then have its own controlled actuator system can be assigned so that an individual Carding distance can be specified and can be followed automatically afterwards.
  • the measuring device can be moved Carrier carried from one setting position to the next, one Flexible sheet can be moved along to the at any such position Carding distance.
  • a measuring device with a camera is well suited for this.
  • the device could even move around the work area scan continuously along the carding distance (video camera) to a "Continuous" image of the carding distance from one end of the work area to map to the other or over a "stretch" of the work area that if necessary, could be predetermined or even selected.
  • the latter variant is used in conventional cards because of the structure of the frame may not be possible, but can be taken into account for new designs.
  • the Mapping of the entire work area is desirable because it provides information about the "overall condition" of the work area can win.
  • a controller must be provided to connect the device to the trigger predetermined places.
  • the measuring device could e.g. of a Swivel arm are carried, which can pivot about an axis that with the Drum axis is aligned.
  • the meter could also be from a sled worn, which runs on a rail along the flexible arch. It a measuring device should be provided on both sides of the card.
  • the invention is not restricted to use in the main carding zone.
  • a similar arrangement can be used to determine the distance of the Buyer 7 or the licker-in 3 to monitor the reel 4 or to regulate. It is even easier to use the measuring, Monitoring and regulatory principles related to compliance with the predetermined distances of the drum set from stationary elements, such as fixed Carding elements in the pre- or post-carding zone, or fixed guide segments in the Sub-carding zone or fixed cover of a fixed-cover card.
  • envelope in this description includes the approximation in form a straight "envelope line", e.g. a tangent to the envelope.
  • FIG. 1 A modern card is equipped with a microprocessor or microcomputer control equipped - examples can be found in EP-A-701 012 and DE-A-31 20 133.
  • This Control is indicated in FIG. 1 by reference number 12.
  • Fig.1 special connections between the controller 12 and other elements of the Machine indicated, but examples of such connections are from those mentioned Previous publications and further connections will be made in the course of following description explained.
  • Input device e.g. a keyboard
  • the selected programming is usually given certain key data by the user required to be able to control the machine, and this key data is mostly one or the other combination of belt weight (ktex), delivery speed (m / min) and production (kg / h).
  • the Controller 12 is able to generate control signals for the various elements to achieve the results specified by the user over the operating period and monitor the results achieved.
  • the machine is equipped with sensors (in Fig. 1 not shown) equipped, which supply signals to the controller. This fact has been used in the invention according to EP 96 101466, as the following Description using the figures 14 to 16 sets out.
  • Fig. 14 is a section of a flexible sheet 30 of such a card shown, with revolving covers 13 running around it (only two shown) be moved slowly with a toothed belt.
  • Adjusting elements 32 are provided with which the carding distance can be adjusted.
  • the actuating elements 32 are small actuators 34, for example, by means of an actuator system automatically adjustable. This actuator system is connected to the controller 12, which the Setting the flexible sheet 30, and thus the carding distance determined; to the Example according to an adjustment characteristic according to FIG. 15.
  • FIG. 15 shows a diagram which shows the change in the carding distance KA on the abscissa depending on the accumulated card sliver production P in tons (kg) on the ordinate for various processed material types.
  • the curve S specifies the target distance, i.e. the carding distance, which does not wear the Set of the drum (and the traveling cover) would be given.
  • the target distance i.e. the carding distance, which does not wear the Set of the drum (and the traveling cover) would be given.
  • the target distance i.e. the carding distance
  • the fiber length and the nits of the fed Fiber material there is now a stronger or less in function of the production heavy wear, as with curves a and b for the different ones Fiber materials A and B is clarified.
  • the degree of wear depending on the ongoing production for the different provenances of the fiber material is either known or can be determined empirically, so that this data is included in the Control 12 (Fig. 1) can be entered, and the actuators 32 due this information can be reproduced.
  • the total production of a card from a given point in time (e.g. from one Set change or a set service) is through the programmable Control of the machine is determined and displayed on request, that is, such data are usually already present in the machine control.
  • the "zero point" for the calculation of this total production is of course also the zero point for the Control of the adjustment of the carding distance can be used.
  • a requirement is that the elements to be adjusted at the zero point in a predetermined state are what must be guaranteed by the operating personnel. Otherwise it will necessary to determine the "starting position" of the elements with a suitable sensor system monitor and report to the controller.
  • the controller 12 can be from the machine supplier with the adjustment characteristic be programmed, i.e. the characteristic is stored in the controller's memory entered. The user can then select the appropriate characteristic by entering the Call up the material to be processed.
  • the adjustment is preferably not continuous, but intermittent (step by step) depending on the capabilities of the actuators.
  • the actuator system is preferably in able to reliably perform an adjustment that is only a fraction (e.g. represents a maximum of 10%) of the normal carding distance. Such distances are today in the range of 20 to 30 hundredths of a millimeter.
  • the actuator system can preferably be reliable Carry out adjustment steps in the range 1 to 3 hundredths.
  • the system is best suited for the user who is on a long period processed a given type of material.
  • the calculation of "total production" at frequent material changes will prove difficult.
  • time can be considered instead of production Control parameters are used.
  • the benefit means the effective one Production time in a given period of time.
  • a double of the arrangement according to FIG. 14 must be a mirror image on the other side of the Carding machine should be provided to adjust the appropriate flexible sheet can.
  • the carding distance can be during of ongoing production in a particularly simple and economical way readjust; this avoids unnecessary downtimes.
  • the hiring or adjustment of the carding distance can also depend on the grinding a set, especially of the automatic grinding of the drum set, be made. This means that the operating times of the carding machines are in one Spinning increased significantly without accepting significant losses in quality have to.
  • a suitable embodiment is described below with reference to FIG. 16 described.
  • Fig. 16 shows schematically the drum 4, briseur (licker-in) 3, pickup 7 and that Grinding system, which is indicated as a whole with the reference numeral 46.
  • the System 46 includes a grindstone, its holder, a drive motor, and a Guide means (not shown) which the grindstone holder during a Stroke movement across the width of the card. 16 also shows the drive motor 50 for the card that rotates the reel 4, for example via a toothed belt 52 moved when the card is in operation.
  • the motor 50 is by signals from one Card control 12 is controlled from and reports its status to this control back.
  • the card controller 12 also controls the grinding system 46 illustrated example was assumed that the grinding system was with its own "Understeering" 56 provided that certain control functions autonomously based on Executes control commands from the main controller 12.
  • This controller 12 also includes a time signal generator, which is shown schematically at 62 is indicated.
  • the preferred solution provides for adjustment after a grinding process, after a number of times determined by the control Grinding operations.
  • the adjustment also programmed then depends on both mentioned number of operations as well as the intensity of the grinding.
  • the use of the Grinding system not strictly controlled according to the time, but according to the production.
  • the user can set the desired service life, Enter the amount of material produced (tons) into the control.
  • the latter determine how often grinding is required.
  • This characteristic is at best adapt to the material type and / or the clothing type, or it must be the right one Type can be called by the user from memory.
  • This characteristic determines in turn both the total number of grinding cycles (e.g. the double stroke of the Grindstone) over the set lifetime of the set, as well as the distribution of these grinding cycles over the life.
  • Adjusting the flexible arch can now be done using the same characteristics can be controlled, since it will probably only be possible after a few grinding cycles Change in tooth shape due to the adjustment of the arch.
  • the controller 12 can also do other things for which Consider carding gap relevant sizes, e.g. the operating speed of the Tambours 4 (the speed of the motor 50) and / or the operating temperature selected locations where temperature measuring devices (not shown) are attached can also provide their output signals to the controller 12.
  • the operating speed of the Tambours 4 the speed of the motor 50
  • the operating temperature selected locations where temperature measuring devices (not shown) are attached can also provide their output signals to the controller 12.
  • tooth 16 In a "basic setting" (immediately after re-garnishing) tooth 16 has one Tooth height H and there is a preset distance KA between the wires 20 and tooth 16 present.
  • the Tooth height due to wear and grinding
  • the carding distance KA should remain constant, however, so that the wire tips are then at level E (dash-dotted).
  • H-h the revolving lid aggregate
  • the delivery should take place gradually so that it is possible the entire path W in e.g. to divide eight steps S1 to S8 (see the right one) Edge of Fig. 17). Based on the data known to the machine manufacturer It is still possible for the machine to program the controller 12 to be determined, e.g. after how many operating hours the delivery by step S1 is plausible. The same applies to steps S2 to S8. If the meter (off for whatever reason) before the end of the specified operating hours "Delivery step" requests that is not plausible after programming, the Controller 12 prevent execution of the requested step.
  • the further behavior of the system also depends on the programming of the Control 12 from.
  • the control programs can e.g. be designed in such a way that Already with the first "error message” the regulation by means of the measuring device 26, 28 is turned off. However, it is unlikely that this will result in a machine stop must lead.
  • the controller 12 can therefore "report the defect", the machine can but continue to work, the controller 12 being able to perform the infeed motion continue to control according to the principles explained with reference to Figures 15 and 16 were.
  • the controller 12 could, however, give individual false signals from the measuring device 26, 28 simply "block”, but take plausible signals into account, whereby the defects should also be reported for staff review.
  • FIG. 18 shows a modification of FIG. 14, according to which for each motor 34 Corresponding measuring device 26, 28 on the work area in the main carding zone is provided in order to deliver respective measured values to the controller 12 (two Measuring points, two setting positions).
  • Each motor 34 could also have one "Position sensor" 40, e.g. an encoder or an angle encoder, which reports the current position to the controller 12.
  • the basic setting as a reference for a Use position monitoring, which means that further plausibility tests by the Control 12 become possible.
  • FIG. 18 also shows the preferred solution for the “screen” 41 Pre-program the machine to allow data entry by the user simplify.
  • the controller 12 can namely be programmed according to the characteristic diagram principle which is explained in EP-A-452 676, referring to the above-mentioned document for further Details are pointed out.
  • the map shown is two-dimensional, it represents the parameter vectors "carding intensity” AI and "cleaning or opening intensity” R / OI.
  • the carding intensity KI is influenced by the carding distance KA, which now controllable by means of the versions already described and by the user in the Enter the form of a setpoint.
  • the cleaning intensity is e.g.
  • Map principle to use to pre-program the machine could be entered individually by the user.
  • the map pre-programming but simplifies the operation of a machine with complex Interactions between the different setting options, e.g. one Teasel.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (10)

  1. Carde qui est pourvue d'une garniture (15), d'un élément (13) faisant face à cette garniture (15) et d'un dispositif d'acteurs (50) pilotable pour régler l'intervalle de cardage (KA) entre la garniture (15) et l'élément (13), et avec une commande programmable pouvant agir sur le dispositif d'acteurs (50) et un dispositif de capteurs (26) qui est configuré pour l'obtention d'au moins une valeur mesurée se rapportant à l'intervalle de cardage et pour la fourniture à la commande de signaux correspondants, la commande étant configurée de telle façon qu'elle reçoit et traite des données qui se rapportent à l'état de la garniture, caractérisée en ce que les éléments mentionnés sont reliés les uns aux autres par le biais de la programmation de telle sorte que l'intervalle de cardage (KA) dans des conditions de travail prédéfinies est réglé au moyen des valeurs mesurées fournies par le dispositif de capteurs (26), la commande étant programmée de telle façon à pouvoir inactiver le réglage lorsque les conditions de travail ne sont pas remplies.
  2. Carde selon la revendication 1, caractérisée en ce que la commande est programmée de telle façon à pouvoir après l'inactivation du réglage encore modifier l'intervalle de cardage au moyen de signaux de commande.
  3. Carde selon la revendication 1 ou 2, caractérisée en ce que la commande est programmée de telle façon à définir pour le réglage une « limite de réglage » permettant d'empêcher une réduction indésirable de l'intervalle de cardage.
  4. Carde selon l'une des revendications précédentes 1 à 3, caractérisée en ce que les conditions de travail sont également programmées dans la commande.
  5. Carde selon la revendication 4, caractérisée en ce que des données surveillées de toute manière par la commande permettent de vérifier si les conditions de travail sont remplies.
  6. Carde selon la revendication 5, caractérisée en ce que les données sont sélectionnées parmi le groupe suivant :
    durée de fonctionnement depuis la dernière intervention de maintenance,
    production totale depuis la dernière intervention de maintenance,
    type de matériau transformé,
    effet des appareils de maintenance intégrés.
  7. Carde selon l'une des revendications précédentes 1 à 6, caractérisée en ce que sont prévus des moyens de génération de données qui représentent immédiatement le statut des conditions de travail, par exemple un capteur pour le repositionnement atteint à partir d'une « position initiale » prédéfinie.
  8. Carde selon l'une des revendications précédentes 1 à 7, caractérisée en ce que le dispositif de capteurs comprend un appareil de mesure qui balaie l'intervalle de cardage du côté de la zone de travail.
  9. Procédé pour corriger le réglage d'éléments de travail sur une machine textile, caractérisé en ce que la correction est effectuée conformément à un système de réglage tant que les valeurs mesurées que traite le réglage résistent à un test de plausibilité, le réglage pouvant être inactivé lorsque la plausibilité requise n'est plus donnée.
  10. Procédé selon la revendication 9, caractérisé en ce qu'il est néanmoins possible de procéder à une correction commandée du réglage à l'aide d'autres données même lorsque la plausibilité n'est plus donnée.
EP01118063A 1996-04-12 1997-03-26 Capteur pour la distance de travail de garnitures de cardage ou pour ajuster ladite distance Expired - Lifetime EP1158078B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH93596 1996-04-12
CH93596 1996-04-12
CH93496 1996-04-12
CH93496 1996-04-12
EP97810179A EP0801158B1 (fr) 1996-04-12 1997-03-26 Capteur pour la distance de travail de garnitures de cardage

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EP1158078A2 EP1158078A2 (fr) 2001-11-28
EP1158078A3 EP1158078A3 (fr) 2002-01-16
EP1158078B1 true EP1158078B1 (fr) 2004-01-07

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CN101268220B (zh) * 2005-09-22 2011-02-09 里特机械公司 用于打磨装置的方法
DE102005050904B4 (de) 2005-10-21 2019-12-12 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Karde, Krempel o dgl., zur Überwachung
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DE102014015480A1 (de) 2014-10-21 2016-04-21 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Spinnereivorbereitungsmaschine, z. B. Karde, zur Messung von Abständen zwischen den garnierten Deckelstäben eines Wanderdeckelaggregates und der garnierten Trommel
CH711367A1 (de) * 2015-07-31 2017-01-31 Rieter Ag Maschf Lagerung eines Flexibelbogens in einer Wanderdeckelkarde.
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Publication number Publication date
DE59711196D1 (de) 2004-02-12
DE59710155D1 (de) 2003-07-03
EP1158078A2 (fr) 2001-11-28
EP1158078A3 (fr) 2002-01-16
EP0801158B1 (fr) 2003-05-28
US5930869A (en) 1999-08-03
EP0801158A1 (fr) 1997-10-15

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