EP2710177A1 - Kardendeckel - Google Patents
KardendeckelInfo
- Publication number
- EP2710177A1 EP2710177A1 EP12727223.5A EP12727223A EP2710177A1 EP 2710177 A1 EP2710177 A1 EP 2710177A1 EP 12727223 A EP12727223 A EP 12727223A EP 2710177 A1 EP2710177 A1 EP 2710177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clothing
- lid
- tips
- drum
- flat
- 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.)
- Granted
Links
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- 230000005684 electric field Effects 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000002657 fibrous material Substances 0.000 claims description 32
- 239000004020 conductor Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000001965 increasing effect Effects 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000032258 transport Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000012799 electrically-conductive coating Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 2
- 238000009960 carding Methods 0.000 abstract description 30
- 238000004140 cleaning Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 15
- 238000000926 separation method Methods 0.000 description 14
- 239000013598 vector Substances 0.000 description 12
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- 239000000428 dust Substances 0.000 description 3
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- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000881711 Acipenser sturio Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000010292 electrical insulation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000021189 garnishes Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 108010084652 homeobox protein PITX1 Proteins 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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- 239000012811 non-conductive material Substances 0.000 description 1
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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
- D01G15/08—Carding machines with flats or like members or endless card sheets operating in association with a main cylinder
-
- 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
- D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
- D01G15/24—Flats or like members
-
- 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
- D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
- D01G15/86—Card clothing; Manufacture thereof not otherwise provided for with flexible non-metallic backing
-
- 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
- D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
- D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips
Definitions
- the invention relates to a device for separating dirt and short fibers on a carding machine and to the method and a lid for use in the device.
- FIG. 2 shows a schematic representation of a carding between a drum set 20 and a revolving lid 10 with a flexible clothing 21.
- the direction of rotation of the card drum and thus the direction of movement 25 held by the drum set 20 fiber material 22 is indicated by the arrow 25.
- the revolving lid 10 is moved in the direction 23. If the movement 23 of the traveling lid 10 in the same direction as the card drum, it is to be noted that the drum set 20 is moved much faster than the flexible clothing 21, resulting in that the direction of movement 23 of the traveling lid 10 for the explanations of Meaning is.
- the picked up by the drum set 20 Fasergut 22 is passed on the revolving lid 0, respectively the flexible clothing 21.
- CONFIRMATION COPY tion between the clothing 21 and the fiber material 22 individual fibers initially hang on the needle tips. They serve as aids for trapping of interfering particles such as leaf parts 26, dust particles 27, stem parts 28, shell parts 29 and fiber pads 30.
- a complete set of the clothing 21 is determined inter alia by the design of the clothing 21.
- the revolving lids basically fulfill four functions, they are intended to dissolve the fiber flakes down to the individual fibers, to separate out sturgeon particles, to dissolve the fibers and to parallelize and orient the fibers. Since, as described above, an excretion of dirt particles takes place only after the absorption of individual fibers, it is also necessary to reduce the intake of individual fibers if the raw material has little contamination. The inclusion of individual fibers in turn depends on the position of the trimmings to each other and from the clothing design. In addition, the longitudinal orientation of the fibers is significantly influenced by the distance between the trimmings, the so-called carding nip.
- the object of the invention is to provide a device and a method which allow a separation of dirt and short fibers from a fiber without causing damage to the fiber or a loss of good fibers. This object is solved by the features of the independent claims.
- the object is achieved by a device for the separation of dirt and short fibers on a card with at least one lid with a flat bar with a flat set with garnish tips and a drum with a drum set, the flat set of the drum set is arranged with a distance opposite each other.
- At least a portion of the clothing tips are formed as pairs of electrodes and connected to a high voltage source, wherein in each case between two, a pair of electrodes forming, clothing peaks an electric field is constructed.
- the object is also achieved by a for the elimination of dirt and short fibers on a card, with a lid with a mounted on a cover foot, flat set with clothing tips a drum opposite which transported to be cleaned fiber by means of a drum set on lids over.
- An electrical voltage is applied to individual clothing tips and, at least in partial regions of the flat clothing, an electric field is formed between two adjacent clothing tips whose field lines extend in a plane which is directed in the same direction as the cover footing.
- a dielectric is a substantially non-electrically conductive particle. Dirt and short fibers in a fiber material behave like a dielectric in an electric field. In particular, those forces which act on a dielectric perpendicular to the field lines of an electric field are of interest for the cleaning of fiber material. For example, an electric field can be established between two capacitor plates. A dielectric is drawn into the field between the capacitor plates according to the electro-technical teaching, perpendicular to the course of the field lines.
- the tensile stress acting perpendicular to the electric field lines on a dielectric is proportional to the square of the field strength.
- the tensile stress is the greater, the higher the field strength, the field strength corresponding to the quotient of the electrical voltage and the distance between the capacitor plates.
- a fiber material to be cleaned is moved past a corresponding electric field, wherein the individual components of the fiber material are attracted by a specific tensile stress from the electric field.
- the electric field is built up between two clothing tips of a lid, which serve as electrodes.
- the clothing tips are to be equated with the capacitor plates from the above example.
- the clothing tips are connected to a high voltage source to achieve the highest possible field strength in the field between the electrodes.
- the fiber material to be cleaned is moved by the drum set at the clothing tips, while the so-called good fibers are held by the drum set.
- the result of the arrangement of the clothing tips is that the field lines of the electric field built up between two yarn tips extend in a plane which is the same direction as the cover footing surface.
- the field lines extend in a plane which lies parallel to the lid foot surface on which the part of the clothing tips which are used as electrodes.
- a plane in which the field lines lie is not inclined more than 60 ° with respect to the lid foot surface on which the part of the clothing tips used as electrodes is inclined.
- the force acting orthogonally on the surface of the fiber material decreases by 50%.
- An alignment of the electric field with respect to the drum set and thus the fiber material can be achieved by a corresponding construction of the lid and its inclination relative to the tangential to the drum.
- the decisive force of the electric field occurs orthogonal to the Field lines on.
- an adjustment is made such that the field lines are inclined less than 60 ° with respect to the tangential to the drum surface.
- a possible inclination of the clothing tips relative to the cover footer is to be considered.
- the possible arrangement of the clothing tips to achieve the desired effect of the electric field built up between two electrode pair forming electrode tips is explained below with reference to the field strength vectors.
- the fiber material is transported past the clothing tips at a certain speed. Due to this, instead of the surface of the fiber material, a velocity vector can be defined. This velocity vector is to be applied at each point of the fiber material. In a transport of the fiber material with the drum, this results in velocity vectors which are applied tangentially to the envelope of the drum.
- the field strength vectors point at each point of the electric field in the direction of the field lines. At the point where the field lines leave the clothing tips, the corresponding field strength vector is orthogonal to the surface of the clothing lace.
- the field strength vector of a field line results as a result of the field strength vectors applied at each point on this field line.
- This resulting field strength vector lies in a plane which is the same as the plane formed by the velocity vectors. Under the same direction is to be understood that the two levels do not deviate more than 60 ° from a parallel arrangement.
- the arrangement of the clothing tips is such that a field strength vector is directed to a plane containing the velocity vector of the fiber material, the same.
- only a part of the clothing tips of a traveling lid is designed as electrodes.
- the pairs of electrodes formed in each case by two opposing clothing tips can be arranged further from the drum clothing than the clothing tips which are provided for carding the fiber material.
- the best setting results with a distance between the drum set the one pair of electrode forming clothing tips from 0.1 mm to 2.0 mm.
- all clothing tips of a traveling lid can also be used as electrodes for cleaning the fiber material and, for example, the subsequent traveling lid can be used for carding.
- the electrode tips used clothing tips are connected to generate an electric field with a high voltage source.
- the high voltage is connected by an appropriate control the electrode pairs via electrical connections.
- the high voltage source is arranged in the flat bar. This is especially in terms of operational safety and the protection of operating personnel against electrical shocks of advantage.
- high voltage generators or capacitors can be used as a high voltage source. It should be noted, however, that the connection between the high voltage source and the electrode pairs is designed to provide shielding to the operator. Also, the high voltage source is correspondingly connected to an energy source. If a high-voltage generator is used as the high-voltage source, ensure a continuous power supply for the period during which the electric field between the electrodes is to be maintained. Such a power supply can be ensured for example by the use of accumulators. In contrast, the use of a capacitor has the advantage of can be charged to a voltage source and then for a certain time to generate the electric field provides the necessary high voltage without this connection must be maintained. The electric field can be generated solely by the stored energy of the capacitor.
- a transmission means for the electrical supply of the high voltage source from a voltage source is provided.
- the revolving lid can be temporarily connected either during use as a cleaning element or in the return during a charging process with the voltage source.
- sliding contacts or contactless induction transmissions are. Sliding contacts can be used to transmit direct current (DC) or alternating current (AC).
- the frequency used does not matter when transmitting AC.
- alternating current (AC) can be used.
- the frequency used is important, since the frequency of the size of the transmission unit as well as the loss to be accepted is largely determined by the frequency.
- the arrangement of the transmission means and the duration of the transmission are dependent on the construction and operation of the revolving lid. Construction and execution of suitable transmission means for connection of high voltage source and voltage source are well known in the prior art.
- the clothing tips serving as electrodes are provided with a so-called side cut.
- This has the consequence that the distance between the facing surfaces of the clothing tips of a pair of electrodes decreases with increasing distance from the drum set.
- the force effect perpendicular to the field lines can be increased by the fact that a field strength of the electric field between the electrodes of the electrode pair increases with increasing distance from the fiber material.
- An increasing field strength with the distance to the drum set is achieved by the geometric shape of the clothing tips with a side cut.
- the fact that the clothing tips have a decreasing thickness in the direction of the drum set results in an inhomogeneity of the field strength with the course the clothing tips. A targeted inhomogeneity draws the impurities and short fibers further into the electric field into a free space with the greatest field strength.
- the field lines of an electric field respectively occur perpendicular to the surface of the clothing tips serving as electrodes. This results in slightly curved field lines in various embodiments, adapted to the geometric shape of the clothing tips. However, this is not relevant to their effect.
- the force effecting the cleaning of the fiber material is directed in the direction of the bisecting line from the entry and exit angles of the field lines.
- the plane is determined by how the resultant of the field lines runs. The plane in which the theoretical field lines run is always perpendicular to the force effect, which results from the sum of all forces orthogonal to the field lines between two clothing tips.
- the absolute field strength must be generated with a high voltage which is below the breakdown voltage in the air.
- the breakdown voltage in air is under normal climatic conditions of the order of 3,200 volts per mm.
- the maximum tension which can be applied to the serving as electrode pairs clothing tips of the revolving flat set without sparking is determined on the one hand by the distance between the clothing tips and on the other hand by the distance of these clothing tips for drum set. Experience has shown that a sparkover can be reliably avoided with a voltage of less than 3 ⁇ 00 per mm.
- the not held by the drum set dirt particles and short fibers are pulled and held by the force orthogonal to the field lines of the electric field between the clothing tips.
- the retention of the particles and short fibers is given by a polarization of the particles in the electric field, which causes them to be ajar against one of the two clothing tips and snag each other by appropriate friction.
- it helps when the field strength increases with the distance from the drum set, since the force action orthogonal to the field lines also increases with increasing field strength.
- the dirt particles are transformed into polarized dipoles. These dipoles are arranged with their longer axis along the field lines of the electric field. Since the dirt particles are weakly conductive as dipoles, their concatenation results in virtual capacitor circuits in series. Minimal distances between the debris or parts of its surfaces can result in locally increased field strengths. Due to these locally increased field strengths, the dirt particles stick to one another in the formed chain.
- the good fibers are held by the drum set and thus withstand the force of attraction of the electric field.
- a lid for use in a device for removing dirt and short fibers on a card with a flat bar and a clothing strip attached to the flat bar, wherein the clothing strip is provided as a flexible clothing.
- the flexible clothing consists of a foundation and U-shaped wire hooks with two tips and a spine connecting the spikes.
- the foundation is electrically insulating, so that between the various adjacent wire hooks a reduction of electrical voltage is possible only in accordance with the electrical insulation. A voltage reduction between two adjacent wire hooks is practically prevented by the electrically insulating effect of the foundation.
- the tips are arranged on the side facing away from the flat rod side of the clothing strip and the back on the flat bar side facing the clothing strip. Between the clothing strip and the flat rod, an insert is provided, which electrically conductively connects individual backs of the wire hooks and is provided with contact points for connection to a high voltage source.
- the insert is a foil with an electric conductive coating.
- the film is made of an electrically non-conductive material, such as plastic.
- the electrically conductive coating can be applied to the film by various methods, such as by printing, steaming, or other methods known in the art.
- the coating is designed as conductor tracks.
- the spines of the wire hooks are electrically conductively connected to the contact points provided on the insert for connection to a high-voltage source.
- the coating can already be applied as conductor tracks. However, it is also possible to cut out the printed conductors after the introduction of the film from a full-surface coating, for example with a laser.
- the insert can be designed as a rigid rod or incompressible flexible film.
- the insert is preferably arranged between the foundation and the backs of the U-shaped wire hooks.
- the insert is pierced together with the foundation with the check mark in the production of clothing strips.
- the contact reliability is achieved by a spring element which is introduced between the flat clothing and the flat bar.
- the spring element may be provided between the insert and the cover foot.
- the spring element is designed to be electrically insulating in this case. If the spring element is mounted between the foundation respectively the back of the wire hooks and the insert, then an electrically conductive spring element is provided.
- an elastic spring element can be used, which has the property of being continuous for electric current only in one direction. The spring element would be in this case on the one hand electrically conductive in the direction of the insert to the
- Wire hook on the other hand, however, electrically insulating in the transverse direction, so that no short circuit can occur.
- the spring element By fastening the clothing strip against the cover foot surface of the flat rod, the spring element is placed under a certain tension and subsequently presses the insert with the electrically conductive coating against the backs of the wire hooks. Due to the high voltage to be introduced into the wire hooks, it is advantageous to provide an electrically insulating layer between the insert and the flat rod.
- the electrically insulating layer can serve, for example, at the same time as a spring element for obtaining the contact security with a suitable choice of material.
- spring elements are different elastic plastics as well as metallic preformed elements conceivable.
- a recess for arranging the insert is provided in the flat bar.
- the clothing strip applied to the flat rod rests on the surface of the flat rod provided for fastening the clothing strip as far as possible without play.
- a recess in the surface of the flat bar is incorporated at the location of the insert.
- the height of the recess is adjusted accordingly when using an additional insulating layer or a spring element. The height of the recess corresponds to the thickness of the insert plus a thickness of the insulating layer and the height of a spring element, if they are provided.
- the fastening of the clothing strip on the flat rod takes place according to a method known from the prior art. Since the insert as well as possibly additionally provided layers are installed between the clothing strip and the flat rod, the known types of fastening, for example positive or non-positive systems, are suitable for clothing strips on flat rods.
- the space between the clothing tips is occupied by them.
- a cleaning device is to be provided.
- the execution of such a cleaning device in the form of a lid cleaning is known.
- the space can be freed continuously or periodically by suction of impurities and short fibers.
- the clothing tips are moved from the working position to a maintenance position. This can be done by moving out or pivoting the clothing tips, as is the case with a Wanderdeckelkarde for the revolving flat lid.
- cleaning the clothing tips is only possible if no electric field is built. It should be noted that, especially when using a capacitor as a high voltage source before a possible lid cleaning a secure discharge of possibly still stored residual energy must be made. In the following the invention will be explained in more detail with reference to FIGS. Show it:
- FIG. 1 shows a schematic simplified representation of a revolving flat card according to the prior art
- Figure 2 is a schematic representation of a carding process according to the prior
- Figure 3 is a schematic representation of a first embodiment of a device for the separation of dirt and short fibers on a card
- Figure 4 is a schematic representation of a flat clothing
- Figure 5 is a schematic representation of a first embodiment of a lid
- Figure 6 is a schematic representation of a second embodiment of a lid
- Figure 7 is a schematic representation of a third embodiment of a lid
- Figure 8 is a schematic representation of a first embodiment of the power supply of a revolving lid
- Figure 9 is a schematic representation of a second embodiment of the power supply of a moving lid
- FIG. 1 shows an arrangement of a card according to the current state of the art, in particular a revolving flat card 1 with an upstream filling chute 2.
- the fiber material is transferred in the form of fiber flakes via the filling chute 2 to the licker-in 3, which in turn forwards the fiber material to the carding drum 4.
- a decklid set 5 is arranged above the card drum 4, a decklid set 5 is arranged.
- the traveling lids 10 are moved on a chain or belt around the deflection rollers 6 over the carding drum surface.
- the movement of the revolving lid 10 can ever after execution against the direction of rotation or with the direction of rotation of the card drum 4 done.
- the carding work is done mainly by the revolving lid 10.
- the fibers oriented by the carding are removed by the pickup 7 from the card drum 4 and fed to a fiber band-forming device 8.
- the removed nonwoven fabric is combined to form a card sliver 9 and passed on to the next machine unit, for example to a sliver deposit or conveyor (not shown).
- a plurality of revolving flaps 0 are provided on said revolving flat cover set 5, wherein only individual revolving flats 10 are shown schematically in FIG.
- Currently used traveling lid sets 5 include closely spaced a plurality of moving lid 10, which rotate.
- the traveling lids 10 are carried near their respective end faces by endless belts and moved against or with the direction of rotation of the card drum 4 and guided past on the underside of the traveling lid set 5 on the surface of the card drum 4.
- Figure 2 shows a schematic representation of a carding process according to the prior art between a drum set 20 and a flexible clothing 21 of a lid. The description of Figure 2 can be found in the prior art.
- FIG. 3 shows a schematic representation of a first embodiment of a device for removing dirt and short fibers on a carding machine.
- a flexible clothing 21 is arranged above a drum set 20.
- the drum set 20 transports the fiber material 22 relative to the flexible clothing 21 in the direction of arrow 25.
- the flexible clothing 21 comprises a foundation 40 and a plurality of wire hooks 41.
- the wire hooks 41 are formed U-shaped so that two clothing tips 43 and 44 form which with a Back part 42 are connected.
- the wire hooks 41 are pierced through the foundation 40 and are held in the foundation 40.
- the flexible clothing 21 is arranged at a distance B relative to the drum clothing 20 such that the clothing tips 43 are directed against the drum clothing 20.
- Two opposing wire hooks 41 are connected to a high voltage source 38, whereby between the directly opposite wire hooks 44 and 45 an electric field 46 builds.
- the opposing wire hooks 44 and 45 form a pair of electrodes.
- a force 47 is applied orthogonal to the field lines on the located in or in the vicinity of the electric field 46 dielectrics.
- dielectrics the components of the fiber material 22 are to be considered.
- all components of the fiber material 22 are attracted to the electric field 46.
- the contaminants 48 include dust particles, short fibers and other foreign matter.
- FIG. 4 shows a schematic representation of a flat clothing 50 in the form of a clothing strip.
- the flat set 50 shown is designed as a flexible set similar to the embodiment shown in FIG.
- the flat cover 50 comprises a plurality of wire hooks 31 which are pierced through a foundation 40 and held by the foundation 40.
- a foundation 40 may be constructed from various materials known in the art.
- the actual clothing is formed by the clothing tips 32, 33, which are projected on the underside of the foundation 40, of the wire hooks 31 which are offset from one another in several rows.
- the wire hooks 31 of a single row are each connected to one another by an electrical conductor 35, 36.
- the connection of the wire hooks 31 through the electrical conductor 35 can, as shown in FIG.
- an electric field 37 is built up between two clothing tips 32, 33 which are adjacent at a distance A.
- the clothing tips 23, 33 are provided with a cut 39 which causes the distance A between two adjacent clothing tips 32, 33 to increase as the distance from the foundation 40 increases. This ensures that the field strength of the electric field 37 between the clothing tips 32, 33 decreases with increasing distance from the foundation 40.
- the field strength of the electric field 37 is increasing, this has the consequence that impinged into the influence of the electric field 46 impurities are drawn up to the foundation 40 in the clothing 50.
- FIG. 5 shows a schematic representation of a first embodiment of a cover 60.
- the cover 60 is arranged opposite the drum set 20.
- the drum set 20 transports the fiber material 22 in the direction of arrow 25 on the cover 60 over.
- the flat bar 60 is arranged at an angle ⁇ with respect to the drum surface inclined.
- the cover 60 comprises a flat rod 61 with a cover foot surface 73.
- fastening clips 62 With the aid of fastening clips 62, a flat clothing 63 in the form of a clothing strip is fastened to the flat rod 60. By fastening clips 62, the flat clothing 63 is pressed against the cover foot 73.
- the flat cover 63 comprises a foundation 72 with U-shaped wire hooks 64 pierced therein.
- the wire hooks 84 are arranged such that their backs 69 on one side and the clothing tips 70, 71 on the other side protrude from the foundation 72.
- the flat clothing 63 faces the back 69 of the wire hooks 64 of the cover foot surface 73.
- a recess 68 is provided in the cover foot 73.
- An insert 65, 66 is fitted into the recess. In the case of an insert 65, 66 adapted to the entire width of the cover foot surface 73, the recess 68 can be dispensed with.
- the insert 65, 66 creates an electrical connection between the individual wire hooks 64.
- the insert consists of a non-conductive part, for example a film 66 and a conductive part, for example printed conductors 65 applied to the film 66.
- the insert 65, 66 is at contact points (not shown) through an electrical connection 75 to a high voltage source 67.
- the high voltage source 67 is advantageously installed in the flat bar 60.
- the electrical connection 75 can be performed for example by drilling in the flat bar to the high voltage source 67.
- an electric field 74 is built up between two opposite wire hooks 64.
- the wire hooks 20 closest to the drum set 20 at a distance B are not equipped with their clothing tips 70 and 71 with an electrical connection to the high-voltage source 67. These wire hooks closest to the drum set serve to card the fiber material. On the other hand, the wire hooks projecting farther away from the drum set 20 with the distance C are connected to the high-voltage source 67. This arrangement allows a narrow distance B for carding the fiber 22 and a greater distance C for the removal of contaminants from the fiber 22nd
- FIG. 6 shows a schematic illustration of a second embodiment of a lid 80.
- the lid is not inclined relative to the drum set 20.
- the drum set 20 transports the fiber material 22 in the direction of arrow 25 on the lid 80 over.
- the cover 80 comprises a flat rod 81 with a cover foot surface 94.
- a flat clothing 83 in the form of a clothing strip is fastened to the flat rod 81.
- the cover foot 94 is executed discontinued.
- the flat cover 83 comprises a foundation 92 with U-shaped wire hooks 84 pierced therein.
- the wire hooks 84 are arranged such that their backs 89 on one side and the clothing tips 90, 91 on the other side protrude from the foundation 92.
- the flat clothing 83 faces the back 89 of the wire hooks 84 of the lid foot 94.
- the cover foot surface 94 is provided with a shoulder 88 and applied across the width of the flat bar 81 in two stages.
- the flat cover 83 is adapted by the fastening clips 82 correspondingly to the offset cover foot surface 94, 88.
- the insert 85, 86 provides an electrical connection between the individual wire hooks 84.
- the insert consists of a non-conductive part, such as a film 86 and a conductive part, for example, on the film 86 applied conductor tracks 85.
- the insert 85, 86 is at contact points (not shown) connected by a electrical connection 75 to a high voltage source 87.
- a spring element 93 is provided between the inserts 85, 86 and the cover foot surface 94.
- the spring element 93 is brought by the tension of the flat clothing 83 and the flat bar 81 by the fastening clips 82 under a bias. As a result, the conductor tracks 85 are pressed against the backs 89 of the wire hooks 84.
- FIG. 7 shows a schematic representation of a third embodiment of a lid 96.
- the lid 96 is carried out relative to the drum set 20 is not inclined.
- the drum set 20 transports the fiber material 22 in the direction of arrow 25 on the cover 96 over.
- the lid 96 comprises a flat bar 97 with a lid foot surface 99.
- the lid foot surface 99 is provided with a kink, by means of which the carding area is separated from the separation area.
- fastening clips 82 With the aid of fastening clips 82, a flat clothing 98 in the form of a clothing strip is fastened to the flat rod 97. By fastening clips 82, the flat set 98 is pressed against the cover foot surface 99.
- the flat cover 98 comprises a foundation 92 with U-shaped wire hooks 84 pierced therein.
- the wire hooks 84 are arranged such that their backs 89 on one side and the clothing tips 90, 91 on the other side from the foundation 92 protrude.
- the flat cover 98 faces the back foot 89 of the wire hooks 84 of the cover foot surface 99.
- the cover foot surface 99 is provided with a kink and placed in the separation area in a plane inclined to the carding area.
- the angle of inclination ⁇ of the cover foot surface 99 in the separation area to the cover foot surface 99 in the carding area determines the spacing of the clothing tips 93, 91 and the drum clothing 20 in the separation area.
- the flat cover 98 is pressed by the fastening clips 82 correspondingly to the bent cover foot surface 99, and thereby pulled apart across the width of the lid, whereby a play-free resting of the clothing strip on the cover foot surface 99 is achieved.
- the kinked cover foot surface 99 results in two different distances B and C between the drum set 20 and the clothing tips 90, 91.
- the distance B is provided as the smaller distance in a carding area and the distance C in a separation area.
- the wire hooks 84 which are located in the separation area are electrically conductively connected to a high-voltage source 87 by means of an inlay 85, 86.
- the part of the cover foot surface 94 located in the separation area can likewise be provided with a depression, as shown in FIG.
- the insert 85, 86 provides an electrical connection between the individual wire hooks 84.
- the insert consists of a non-conductive part, such as a film 86 and a conductive part, for example, on the film 86 applied conductor tracks 85.
- the insert 85, 86 is at contact points (not shown) connected via a electrical connection 75 to a high voltage source 87.
- FIGS. 8 and 9 show a schematic representation of a power supply of a traveling cover 100.
- the traveling lid 100 is not connected to a power supply 109, 113 throughout its handling. It is sufficient to provide the part of the process path of a traveling lid 100 with a power supply, during which an excretion of impurities is process-effective.
- FIGS. 8 and 9 a part of a traveling cover 100 is shown.
- the revolving lid 100 comprises a flat bar 101 with a built-in high-voltage source 103.
- the flat bar 101 is fastened with a corresponding flat set 102 which opposes a drum set 20.
- Fixed to the flat bar 101 is a lid head 108.
- the lid head 108 is in turn attached to a sliding shoe 104 with which the revolving lid 100 is mounted on a guide rail 106.
- the traveling lid 100 is pulled over the guide rail 106 with a belt 105, which is also attached to the lid head 108.
- FIG. 8 schematically shows a connection between the high-voltage source 103 and a voltage source 109 via sliding contacts 110.
- the sliding contacts 110 are provided according to the need only in a part of the process path of the traveling cover 100.
- the sliding contacts 110 can be used to transmit direct current (DC) or alternating current (AC) from the voltage source 109 to the high-voltage source 103. When transmitting AC, the frequency used does not matter.
- current collectors 112 are provided at the corresponding point, which ensure a forwarding to the high-voltage source 103.
- FIG. 9 schematically shows a connection between the high-voltage source 103 and an AC voltage source 1 3 via an inductive power supply 111.
- Fixed to the flat bar 101 is a coil which is moved by an electric field formed by a DC voltage source 113.
- An inductive power supply 111 is not subject to wear and functions independently of a moving contact. There are no measures to secure a contact and thus a secure power supply necessary.
- the Ductive power supply 111 is provided according to the need only in a part of the process path of the traveling lid 10.
- alternating current In a contactless energy transmission in the form of an inductive power supply 111 only alternating current (AC) can be used. In this case, the frequency of the alternating current used for energy transmission is important. Due to the frequency of the alternating current, the size of the inductive power supply 111 as well as the loss to be taken into account is determined significantly.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00857/11A CH704982A1 (de) | 2011-05-20 | 2011-05-20 | Vorrichtung zum Ausscheiden von Schmutz und Kurzfasern an einer Karde. |
PCT/CH2012/000108 WO2012159220A1 (de) | 2011-05-20 | 2012-05-16 | Kardendeckel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2710177A1 true EP2710177A1 (de) | 2014-03-26 |
EP2710177B1 EP2710177B1 (de) | 2015-03-18 |
Family
ID=46275603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12727223.5A Active EP2710177B1 (de) | 2011-05-20 | 2012-05-16 | Kardendeckel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2710177B1 (de) |
CN (1) | CN103562449B (de) |
CH (1) | CH704982A1 (de) |
WO (1) | WO2012159220A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017101863A1 (de) | 2017-01-31 | 2018-08-02 | TRüTZSCHLER GMBH & CO. KG | Detektionsvorrichtung an einer Spinnereivorbereitungsmaschine und dafür vorgesehene Deckelstabgarnitur |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741208C (de) * | 1941-03-31 | 1943-11-06 | Ver Kratzenfabriken G M B H | Karde |
DE1104873B (de) * | 1959-06-27 | 1961-04-13 | Textiltech Forsch | Vorrichtung zum Abloesen des Fasergutes vom Abnehmer einer Karde oder Krempel |
US3148415A (en) * | 1960-10-27 | 1964-09-15 | Whitin Machine Works | Flat clothing for carding machines |
FR1278155A (fr) * | 1960-10-27 | 1961-12-08 | Garniture de chapeau pour machine à carder | |
IN171142B (de) * | 1987-03-19 | 1992-08-01 | Japan Cotton Technical And Eco | |
SU1730236A1 (ru) * | 1989-08-29 | 1992-04-30 | Всесоюзный Научно-Исследовательский Институт Охраны Труда Вцспс | Узел чесани |
DE9306116U1 (de) * | 1993-04-22 | 1993-11-04 | China Textile T & R Institute, Taipeh/T'ai-pei | Elektrostatische Auflösungs- und Kurzfaser-Ausscheidevorrichtung für Karden |
DE29619807U1 (de) * | 1996-11-14 | 1997-03-20 | China Textile Institute, Ti-Chen, Taipeh | Elektrostatische Hochspannungs-Öffnungs- und Entstaubungsvorrichtung mit hoher Effizienz |
DE10248776B3 (de) * | 2002-10-18 | 2004-09-09 | Hollingsworth Gmbh | Karde mit einer, eine Ganzstahlgarnitur aufweisenden Trommel |
WO2006119658A1 (de) * | 2005-05-11 | 2006-11-16 | Maschinenfabrik Rieter Ag | Spinnereivorbereitungsmaschine sowie berührungsloses messverfahren |
CH699275B1 (de) * | 2007-06-01 | 2011-05-31 | Rieter Ag Maschf | Flexible Garnitur. |
CN101962828A (zh) * | 2010-08-18 | 2011-02-02 | 孙鹏子 | 新型的全固定盖板梳棉机 |
-
2011
- 2011-05-20 CH CH00857/11A patent/CH704982A1/de not_active Application Discontinuation
-
2012
- 2012-05-16 EP EP12727223.5A patent/EP2710177B1/de active Active
- 2012-05-16 WO PCT/CH2012/000108 patent/WO2012159220A1/de active Application Filing
- 2012-05-16 CN CN201280024215.6A patent/CN103562449B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012159220A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN103562449B (zh) | 2016-04-06 |
WO2012159220A1 (de) | 2012-11-29 |
EP2710177B1 (de) | 2015-03-18 |
CH704982A1 (de) | 2012-11-30 |
CN103562449A (zh) | 2014-02-05 |
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