Method for deriving a combing waste amount of a carding machine and carding machine

Abstract

The invention relates to a method for determining the noil yield of a carding machine with a plurality of carding heads (20), wherein at least one sliver (4) is unwound from a lap (1) at each carding head (20) and is transported to a nipper mechanism (27) by means of a feed drum (26), the noil is carded from the sliver (4) and is sucked off by means of a flat and a circular comb (33, 38), and the resulting fibre fluff is converted into a fibre sliver (F1-Fn) by means of a sliver horn (41), which is drawn together with the other fibre slivers of the other carding heads into a single fibre sliver (F), wherein the weight of the lap on the carding head and the sliver mass of all the carded fibre slivers before the sliver horn are determined. The invention is characterized in that the lap weight or the weight change in relation to the length of the unwound sliver (4) or in relation to a specific time is converted into the incoming sliver mass (m) in a controller (S), and the sliver mass determined by means of a sensor is subtracted from the sliver mass to be carded, and the amount of noil that has been carded is displayed by means of an output device (A).

Description

Technical Field

[0001] This invention relates to a method for determining the amount of combed cotton waste from a combing machine and a combing machine having multiple combing heads, wherein at least one sliver is unwound from a spool at each combing head, and the sliver is conveyed to a nipper mechanism by means of rollers and a feed cylinder, the combed cotton waste is combed out and sucked away from the sliver by means of a top comb and a circular comb, and the resulting fiber fluff is transformed into fiber slivers by means of a guide flare, and the fiber slivers are stretched together with other fiber slivers from other combing heads into a single fiber sliver, wherein the sliver quality of all combed fiber slivers before the coiler is determined.

[0002] Because short fibers result in lower yarn strength, yarn quality is further determined by the large proportion of long fibers. To address this, short fibers are combed out during the textile preparation process using a combing machine. Circular and top combs separate short fibers, clumps, waste, and dust from the previously connected fibers. A large proportion of this effluent, also known as combing waste, can be an indicator of good future yarn quality. However, it can also be an indicator of poor fiber samples, containing a disproportionately large proportion of short fibers, clumps, waste, and dust, which must be removed first. Furthermore, a large value of combing waste can be an indication of a setting problem or machine defect. The amount of combing waste must be determined as accurately as possible during the textile preparation process, as the amount of short fibers removed is ultimately an expensive byproduct. Different systems are known in practice for determining combing waste, varying in cost and relying on sensor detection or weighing.

[0003] WO93 / 12278A1 discloses a sensor setup for detecting combed cotton waste from each individual combing head, or a sensor setup for detecting all combed cotton waste from the combing machine. DE102006002390 describes auxiliary setting options for the combing machine related to fiber quality.

[0004] In DE102007039067, each combing head of the combing machine is equipped with sensors that measure the weight of the cotton lap preceding the combing head. The combed waste is removed by suction under the circular combs. After the combing head, the output quality is measured using a measuring bell or sensor and compared to the input quality. The controller compares the measurement data, where the difference in quality corresponds to the combed waste. The controller can display the share of combed waste for each combing head individually, or the share of combed waste for the entire combing machine, thereby influencing the combing machine settings.

[0005] According to EP3030702B1, the circular comb and its cleaning brush are positioned within a suction channel that removes combed cotton waste. The amount of combed cotton waste can be determined using sensors.

[0006] WO2005 / 001176A1 discloses a method for determining the amount of combed cotton waste from a combing machine, wherein the fiber sliver mass at the combing machine inlet and the fiber sliver mass at the output are detected by means of sensors, and the amount of combed cotton waste is calculated from the detected values.

[0007] EP2913427A1 describes a combing machine with an input unit by means of which the feed rate can be adjusted and the combing height can be adjusted.

[0008] WO2016 / 067155A1 discloses multiple sensors that monitor the proportion of combed cotton falling off the circular comb, and thereby monitor the combing intensity or the cleaning intensity of the brush roller.

[0009] The drawback of existing technology is that setting up its own measuring device for each comb head to determine the output quality can be very costly and prone to malfunctions. Summary of the Invention

[0010] Based on the known prior art, the objective of this invention is to provide a simple and cost-effective method and apparatus for detecting combing waste cotton in a combing machine.

[0011] The objective of this invention is achieved through the features of embodiments 1, 2, 11, and 12. Dependent embodiments define advantageous variations.

[0012] This invention relates to a method for determining the amount of combed cotton waste in a combing machine having multiple combing heads, wherein at least one sliver is unwound from a spool at each combing head, and the sliver is conveyed to a nipper mechanism by means of a feeding cylinder, and the combed cotton waste is combed out and sucked away from the sliver by means of a top comb and a round comb, and the resulting fiber fluff is converted into fiber sliver by means of a guide flare, and the fiber sliver is stretched together with other fiber slivers from other combing heads into a single fiber sliver, wherein the sliver quality of all combed fiber slivers before the coiler is obtained.

[0013] The technical teachings of this invention lie in manually inputting the sliver mass, number of combing cycles, tension value (Anspannverzug), and feed amount of all cotton rolls into the combing machine by means of an input device, and converting them into the sliver mass to be combed in the controller, wherein the controller subtracts the sliver mass to be combed from the sliver mass obtained by the sensor, and displays the amount of combed cotton waste by means of an output device.

[0014] According to the present invention, the method and the associated combing machine are simpler to construct than those of the prior art. In particular, the measuring device after each combing head is eliminated, and only the total sliver mass (output mass) of the fiber sliver F at the guide flare is obtained. This involves determining the percentage of combing waste by calculation, which is based on a nominal value for fiber sliver fineness. When the deviation from the nominal value for fiber sliver fineness or the nominal value for the fiber mass entering the combing machine is made, the tension value can be changed. Because the input mass is determined by calculation and the output mass of the fiber is accurately determined by means of sensors, the determination of combing waste is sufficiently accurate, thus requiring only one calibration of the measuring device with minimal cost. Production data such as the number of combing cycles, tension value, conveying speed, and sliver fineness of the combed sliver are routinely detected on the combing machine and automatically applied to the calculation of combing waste. Compared to the prior art, only a controller for determining the amount of combing waste by calculation needs to be constructed in the combing machine. According to this method, the value of the input sliver mass is manually input into the controller.

[0015] The present invention also specifies in the same manner a method for determining the amount of combed cotton waste in a combing machine having multiple combing heads, wherein at least one sliver is unwound from the spool at each combing head, and the sliver is conveyed to a nipper mechanism by means of a feeding cylinder, and the combed cotton waste is combed out and sucked away from the sliver by means of a top comb and a round comb, and the resulting fiber fluff is converted into fiber sliver by means of a guide flare, and the fiber sliver is stretched together with other fiber slivers from other combing heads into a single fiber sliver, wherein the weight of the spool at the combing head and the sliver mass of all combed fiber slivers before the coiler are determined.

[0016] This method is characterized by converting the unfolded length of the sliver or the weight or weight change of the sliver relative to a specific time period into the incoming sliver mass within the controller, and subtracting the output sliver mass obtained by sensors after the drafting mechanism from the sliver mass to be combed, and displaying the amount of combed waste by means of an output device. Similarly, the output sliver mass obtained after the drafting mechanism is relative to the fiber sliver length or relative to a specific time period. According to this method, the value of the incoming sliver mass is either partially manually input to the controller or automatically obtained by the controller. If the fiber sliver fineness is manually input to the controller, the advantage of this, combined with the process of obtaining the fiber sliver weight relative to the unfolded sliver length, is that fluctuations in the sliver mass at the comber's inlet can be immediately identified and offset by means of the drafting device. Compared to the prior art, the amount of fiber to be combed is thus more uniform, and the combed sliver has better quality. Simultaneously, machine malfunctions (e.g., broken top combs) or quality defects in cotton samples can be identified very quickly when fluctuations in combed waste occur.

[0017] According to the present invention, the apparatus and method are simpler in construction than those of the prior art. In particular, the measuring device after each combing head is eliminated, and only the total sliver mass (output mass) of the fiber sliver at the guide flare or after the drafting mechanism and before the coiler is obtained. Using data from sensors to determine the lap weight, the sliver mass fluctuation of each combing head in the case of short time intervals can be obtained by means of a controller; this sliver mass fluctuation can be directly offset by the tensioning of the sliver.

[0018] Preferably, the number of combing cycles and the tension value of the cotton sliver can be manually input using an input device.

[0019] In an advantageous embodiment, the weight of the cotton wadding at each combing head can be determined. This allows for the detection of sliver quality fluctuations at each combing head, and these fluctuations can be counteracted, for example, by adjusting the tension value.

[0020] However, it is equally sufficient to determine the common weight of the cotton lap in the combing head group. This does not allow for the determination of sliver quality fluctuations at each individual combing head. But if this is part of the combing process, then the combed sliver quality can be determined after each combing head using sensors positioned in the guide flare, which transforms the fiber fluff into fiber sliver. In this variation, fluctuations in the fiber quality to be combed at each combing head can also be compensated for by variations in tension.

[0021] Preferably, the amount of combed cotton waste can be changed by adjusting machine parameters such as the insertion depth of the top comb, the change in the pull-out distance, and / or the change in the number of combing cycles.

[0022] The combing machine according to the invention has multiple combing heads, wherein at each combing head, at least one sliver is unwound from a wad, and the sliver is conveyed to a nipper mechanism by means of rollers and a feed cylinder. Combing waste is combed out and drawn away from the sliver by means of a top comb and a circular comb, and the resulting fiber fluff is transformed into a fiber sliver by means of a guide flare. The individual fiber sliver is stretched together with other fiber slivers from other combing heads to form a single fiber sliver, wherein the weight of the wad on the combing head and the sliver mass of all combed fiber slivers before the coiler are determined by means of sensors.

[0023] In a first embodiment of the invention, the comber is characterized by manually inputting the sliver mass of all cotton laps entering the comber, the number of combing cycles, the tension and draw value of the sliver, and the feed rate via an input device. A controller is also provided that converts the input data into the sliver mass to be combed, wherein the controller subtracts the sliver mass to be combed from the output sliver mass obtained by a sensor, and displays the amount of combed waste by means of an output device. The comber is advantageously simpler to construct than the prior art. In particular, the measuring device after each combing head is eliminated, and only the total sliver mass (output mass) of the fiber sliver F at the guide flare is obtained. This involves determining the percentage of combed waste by calculation, which is further based on the rated value of the fiber lap fineness. When deviating from the rated value of the fiber lap fineness or the rated value of the fiber mass entering the comber, the tension and draw value can be changed. Because the input sliver quality is determined by calculation and the output sliver quality is accurately determined by sensors, the determination of combing waste is sufficiently accurate, requiring only one minimal calibration of the measuring device. Production data such as the number of combing cycles, tension, conveyor speed, and sliver fineness are routinely monitored on the combing machine and automatically applied to the combing waste calculation. This combing machine differs from existing technologies in its controller, which calculates the input sliver quality and subtracts the measured output sliver quality to determine the amount of combing waste. For customers, the advantage is that they no longer need to manually weigh the combing waste; instead, the continuous display of the combing waste amount allows them to infer the combing machine's operating status and the quality of the combed fiber sliver.

[0024] In a second embodiment of the invention, the combing machine is characterized by having a controller configured to process sensor data by converting the length of the unfolded sliver or optionally the weight or weight change of the sliver over a specific time into the incoming sliver mass, and by subtracting the sliver mass output by a sensor from the sliver mass to be combed, and displaying the amount of combed waste as a result by means of an output device. The sliver mass output by the sensor can also be converted into fiber sliver length or sliver mass per unit time. With this second embodiment of the invention, the amount of combed waste can be determined partially automatically or fully automatically.

[0025] Each comb head preferably has a sensor for determining the weight of the cotton roll.

[0026] The combing head assembly may optionally have a sensor for determining the common weight of the cotton roll.

[0027] On the guide flare that transforms the fiber fluff into fiber sliver, a sensor for determining sliver quality is preferably placed after each combing head. Combined with a weight sensor for the combing head assembly, it is still possible to determine sliver quality fluctuations at each combing head and / or to sense sliver breakage.

[0028] Preferably, at least one fiber roll transport roller is driven. Preferably, two fiber roll transport rollers are driven. The driven fiber roll transport rollers enable the sliver to be smoothly transferred to the combing head.

[0029] Preferably, the tension value can be adjusted by means of changes in the rotational speed of at least one driven fiber spool transport roller and / or the rotational speed of the feed roller. This allows for compensation, within a limited range, of fluctuations in the quality of the sliver entering the combing process.

[0030] Preferably, tension can be generated on the sliver by means of a tensioning device disposed between the fiber roll transport roller and the feed roller.

[0031] In another advantageous embodiment, the diameter and rotational speed of the fiber lap transport rollers can be used to control the fiber lap weight relative to the fiber lap length. For this purpose, the unfolded length of each fiber lap or the real-time fiber lap weight relative to time is determined by sensors on the combing head, wherein the diameter and rotational speed of the driven fiber lap transport rollers are applied in the controller for the unfolded length of each fiber lap. This allows the input fiber mass corresponding to each unit unfolded length of each fiber lap to be determined, thereby measuring fluctuations in the cotton weight, which can be compensated for by the tensioning between the rollers and the feed cylinder.

[0032] The foregoing description of the solution according to the invention thus includes, in particular, various combinations of features defined by the subsequently numbered embodiments:

[0033] 1. A method for determining the amount of combed cotton waste in a comber having multiple combing heads (20), wherein at least one sliver (4) is unwound from a lap (1) at each combing head (20), and the sliver is conveyed to a nipper mechanism (27) by means of a feed cylinder (26), the combed cotton waste is combed out and sucked away from the sliver (4) by means of a top comb and a circular comb (33, 38), and the resulting fiber fluff is converted into fiber strips (F1-Fn) by means of a guide flare (41), and the fiber strips are combined with other fiber strips from other combing heads. The fiber is stretched into a single fiber sliver (F), wherein the sliver mass of all combed fiber slivers before the coiler is obtained, wherein the sliver mass (m), the number of combing cycles (N), the tension and feed amount of the sliver (4) of all cotton rolls entering the comber are manually input by means of the input device (E), and converted into the sliver mass to be combed in the controller (S), wherein the controller (S) deducts the sliver mass output by the sensor from the sliver mass to be combed, and displays the amount of combed cotton waste by means of the output device (A).

[0034] 2. A method for determining the amount of combed cotton waste in a comber having multiple combing heads (20), wherein at least one sliver (4) is unwound from a lap (1) at each combing head (20), and the sliver is conveyed to a nipper mechanism (27) by means of a feed cylinder (26), and the combed cotton waste is combed out and sucked away from the sliver (4) by means of a top comb and a round comb (33, 38), and the resulting fiber fluff is converted into fiber strips (F1-Fn) by means of a guide flare (41), and the fiber strips are stretched together with other fiber strips from other combing heads into a single fiber strip (F1-Fn). F), wherein the weight of the cotton roll on the combing head and the sliver mass of all combed fiber slivers before the coiler are obtained, wherein the length of the unfolded sliver (4) or the weight of the cotton roll or weight change over a specific time is converted into the incoming sliver mass (m) in the controller (S), and the sliver mass output by the sensor is deducted from the sliver mass to be combed, and the amount of combed cotton drop is displayed by means of the output device (A), wherein the number of combing cycles (N) and the tension pull value of the sliver (4) are manually input by means of the input device (E).

[0035] 3. The method according to embodiment 2, wherein the weight of the cotton roll (1) is determined at each comb head (20).

[0036] 4. According to the method of embodiment 2, the common weight of the cotton rolls (1) of the combed head group is obtained.

[0037] 5. The method according to one of the aforementioned embodiments 1 or 2, wherein fluctuations in the quality of the fibers to be combed on each combing head (20) are offset by means of changes in the tension pull value of the sliver (4).

[0038] 6. The method according to any one of the foregoing embodiments, wherein the breakage of the strip can be determined by obtaining the output strip mass.

[0039] 7. The method according to any one of the preceding embodiments 1, wherein the amount of combed cotton waste can be changed by adjusting machine parameters such as the insertion depth of the top comb, the change of the pull-out distance and / or the change of the number of combing cycles.

[0040] 8. The method according to embodiment 4, wherein the quality of the combed strips after each combing head is obtained.

[0041] 9. The method according to any one of the foregoing embodiments, wherein the tension pull value (Δ∩21-22 / 26) of the sliver (4) between the driven fiber roll transport rollers (21, 22) and the feed cylinder (26) is adjustable.

[0042] 10. A combing machine having multiple combing heads (20), wherein at each combing head (20), at least one sliver (4) is unwound from a lap (1), and the sliver is conveyed to a nipper mechanism (27) by means of a roller (25) and a feed cylinder (26), and combing waste is combed out and sucked away from the sliver (4) by means of a top comb and a circular comb (33, 38), and the resulting fiber fluff is transformed into fiber strips (F1-Fn) by means of a guide flare (41), the fiber strips being stretched together with other fiber strips from other combing heads into a single fiber strip (F), wherein, The sliver mass of all combed fiber slivers before the coiler is obtained by means of a sensor. The sliver mass (m) of all cotton rolls entering the comber, the number of combing cycles (N), the tension and pull value of the cotton sliver (4) and the feed amount are manually input by means of an input device (E). In addition, a controller (S) is constructed, which converts the input data into the sliver mass to be combed. The controller (S) deducts the sliver mass output by means of the sensor from the sliver mass to be combed, and displays the amount of combed cotton waste by means of an output device (A).

[0043] 11. A combing machine having multiple combing heads (20), wherein at each combing head (20), at least one sliver (4) is unwound from a lap (1), and the sliver is conveyed to a nipper mechanism (27) by means of a roller (25) and a feed cylinder (26), and combing waste is combed out and sucked away from the sliver (4) by means of a top comb and a circular comb (33, 38), and the resulting fiber fluff is transformed into fiber strips (F1-Fn) by means of a guide flare (41), the fiber strips being stretched together with other fiber strips from other combing heads into a single fiber strip (F), wherein, by means of a sensor The weight of the cotton roll on the combing head and the sliver mass of all combed fiber slivers before the coiler are obtained. A controller (S) is constructed to process sensor data by converting the unfolded length of the sliver (4) or the weight of the cotton roll or weight change over a specific time into the incoming sliver mass (m), and by subtracting the sliver mass output by the sensor from the sliver mass to be combed and displaying the amount of combed cotton drop by means of an output device (A). Each combing head has a device for changing the tension pull value of the sliver (4).

[0044] 12. The combing machine according to embodiment 11, wherein each combing head (20) has a sensor (13) for determining the weight of the cotton roll (1).

[0045] 13. The combing machine according to embodiment 11, wherein the combing head assembly has a sensor (13) for determining the common weight of the cotton roll.

[0046] 14. The combing machine according to embodiment 11, wherein the combing machine has driven fiber roll transport rollers (21, 22), wherein the tension pull value (Δ∩21-22 / 26) can be adjusted by means of the change in the rotational speed of the driven fiber roll transport rollers (21, 22) and / or the change in the rotational speed of the feed roller (26).

[0047] 15. The combing machine according to any one of the foregoing embodiments 10 to 14, wherein the sensor is constructed on the guide bar flare (42) to detect bar breakage.

[0048] 16. The combing machine according to embodiment 13, characterized in that, after each combing head (20), a sensor for determining the quality of the strip is disposed on the guide bar flared mouth (41).

[0049] 17. The combing machine according to embodiment 10 or 11, wherein a controller (S) is configured to detect the weight of the cotton roll relative to the length of the cotton roll by means of the diameter and rotational speed of the fiber roll transport rollers (21, 22). Attached Figure Description

[0050] Other methods for improving the invention will be further illustrated below with the aid of the accompanying drawings, together with a description of preferred embodiments of the invention.

[0051] In the picture:

[0052] Figure 1 A schematic side view of the combing head of a combing machine is shown;

[0053] Figure 2 A schematic top view of a combing machine is shown;

[0054] Figure 3 This illustrates a first embodiment of measuring combing waste on a combing machine;

[0055] Figure 4 Another schematic side view of the combing head of the combing machine is shown;

[0056] Figure 5 A schematic top view of a combing machine is shown;

[0057] Figure 6 This illustrates a second embodiment for measuring combing waste on a combing machine;

[0058] Figure 7 This illustrates a third embodiment of measuring combing waste on a combing machine.

[0059] The following text is related to Figures 1 to 7 A preferred embodiment of the combing machine K according to the present invention will be described. The same features in the figures are given the same reference numerals. It is self-evident that the figures are presented in a simplified manner and, in particular, not to scale. Detailed Implementation Plan

[0060] Figure 1 A combing head 20 is shown, and at least eight combing heads are mounted on a combing machine. For the sake of overview, this embodiment only shows and describes one combing head 20, wherein, apart from a common drive unit and sliver holder, the details shown here are those mounted on each of these combing heads. The combing head 20 further comprises two fiber roll transport rollers 21, 22, wherein the forward fiber roll transport roller 21 is connected to a transmission mechanism 23 driven by a motor 24. The second fiber roll transport roller 22 is connected to the first fiber roll transport roller 21 via a belt drive, thereby driving both fiber roll transport rollers 21, 22 via the motor 24 and the transmission mechanism 23. A cotton lap 1 is located on the fiber roll transport rollers 21, 22, and a cotton sliver 4 is unwound from the cotton lap by rotational movement. The cotton sliver 4 is wound onto a fiber roll sleeve 1a.

[0061] The sliver 4 can be reversed on roller 25 and transferred to the feed cylinder 26 of the nipper mechanism 27. A pressure roller 30, also driven here by the drive mechanism 23, can be provided on roller 25, which is pivotally supported about lever 28 by the loading of spring 29. This embodiment with roller, spring-loaded lever 28, and pressure roller is preferably used only in automated fiber spool placement processes and is not necessarily a component of every combing machine. The nipper mechanism 27 is reciprocating via lever and can be driven by shaft 31 connected to the drive mechanism 23. According to the example shown, the nipper mechanism 27 is in a forward position and transfers the combed fiber tufts to a subsequent pair of separating rollers 32. A circular comb 33 is rotatably supported below the nipper mechanism 27, and combs out the fiber tufts handed over by the closed nipper through its pin plate seat. The circular comb 33 is also driven by the drive mechanism 23. A ratchet (not shown) is fixed to the feed cylinder 26. This ratchet rotates gradually by means of the reciprocating motion of the clamping mechanism 27 via a pawl (also not shown), thereby conveying the sliver 4 to the clamping jaws for combing. During operation, the sliver 4 unfolds continuously by the rotational motion of the spool 1 via the fiber roll transport rollers 21 and 22, and reaches the feed cylinder 26. Then, for combing, the cotton is conveyed through the feed cylinder 26 to the clamping jaws of the clamping mechanism 27, and subsequently to the separating roller 32. The resulting fiber web passes through the exit rollers 34, 35, 36 and the guide plate 37, and by means of the guide bell 41 (see...). Figure 2 The fibers are integrated into fiber slivers F1-F8 and transported together with the fiber slivers formed on other combing heads to the drafting mechanism 40 (see...). Figure 2 The web output from the drafting mechanism is integrated into a fiber sliver, the so-called combed sliver, and transferred to a sliver accumulator for placement in a sliver can.

[0062] The combed slivers from individual heads then pass through the exit rollers 34-36, which deliver the slivers in sliver or web form to the guide plate 37. Short fibers, clumps, and dirt removed from the fibrous material by the circular comb 33 and top comb 38 are drawn into a suction channel as so-called combing waste through a guide channel, which is associated with all the combing heads of the machine. Figure 2The individual slivers F1-F8 are moved from different combing heads of the machine to the output table 39, and typically move side-by-side to a common drafting mechanism 40. A guide bell 42 is provided at the output of the drafting mechanism 40, which causes the fiber web to form sliver F, which is then placed in the sliver can 10. The guide bell 42 has an integrated sensor that detects sliver quality or sliver quality fluctuations. The sliver quality per unit time, i.e., the output quality, is determined by the conveying speed of the combing machine K.

[0063] Figure 3 The first embodiment of the invention is shown, wherein data is processed in a controller S to measure combing waste. In an input device E, which can be configured as a keyboard or display, the fiber lap fineness or the mass of incoming fibers m (in ktex), the number of combing cycles N (in nips / min), and the tension Δ∩ between the driven fiber lap transport rollers 21, 22 and the feed cylinder 26 are input. 21-22 / 26 The tension value △∩ 21-22 / 26 This is the difference in rotational speed between the fiber roll transport rollers 21 and 22 and the feed roller 26. The feed amount is also manually input into the input device E. The fiber infeed mass, i.e., the fiber mass *m* relative to the length of the sliver 4, or the fiber mass *m* over a specific time period calculated from the rotational speeds of the fiber roll transport rollers 21 and 22, is determined by calculation in the controller S using these data. The difference between tensioning and stretching is that the fiber sliver cross-section is not homogenized, and two clamping positions are not required. The support of the sliver 1 on the fiber roll transport rollers 21 and 22, and the accompanying frictional force associated with the rotational speed of the feed roller 26, are sufficiently accurate for the defined tensioning value, so that the decreasing weight of the fiber roll has no effect.

[0064] Simultaneously, the sensor signal is transmitted to the controller S through the guide bar flare 42, and the output quality of the combed fibers relative to their length is obtained using this sensor signal. Similarly, by calculating based on the delivery speed of the drafting mechanism 40, the output quality of the combed fibers per unit time can also be obtained.

[0065] The amount of combing waste can be determined by calculating the difference between the output mass relative to the fiber sliver F obtained from the relative sensor and the output mass relative to a unit of time. The absolute or relative amount of combing waste is displayed by means of an output device A, which can be configured as a display. According to the invention, the configuration of the apparatus and method is simpler than that of the prior art. In particular, the measuring device after each combing head 20 is eliminated, and only the total sliver mass (output mass) of the fiber sliver F at the guide flare is obtained. Figure 3In the embodiments of the method according to the invention, the percentage of combed cotton waste is determined by calculation, which is further based on a nominal value for fiber lap fineness. When deviating from the nominal value for fiber lap fineness in ktex or the nominal value for fiber mass m, the tension pull value Δ∩ can be changed. 21-22 / 26 Because the input quality is determined computationally and the output quality of the fibers is accurately determined by sensors, the determination of combing waste is sufficiently accurate, requiring only one calibration of the measuring device 42 with minimal cost. Production data such as the number of combing cycles, tension, conveying speed, and sliver fineness are routinely detected on the combing machine and automatically applied to the combing waste calculation. When the process changes, such as with new sample fineness or feed rate, the manually entered data must be adapted to the new values. The measuring system on the guide sliver bell 42 for determining the output quality can be used in parallel to determine the flow coefficient (CV) value, or existing systems for deriving the flow coefficient (CV) value can be used to determine the output quality. Determining the quality at the output of the combing machine at the guide sliver bell 42, or at a single head, allows for monitoring of sliver breakage or web breakage. Therefore, current monitoring methods, such as those on the fiber web conveyor, can also be omitted. It utilizes detected or known data to derive and display production values ​​in the ongoing process, such as the percentage of combed cotton waste. The determination of combed cotton waste can be implemented without additional mechanical costs, such as increased production costs due to sensors required on the machine. Another advantage is that it utilizes detected or known data to derive and display production values ​​in the ongoing process, such as the percentage of combed cotton waste.

[0066] The effects of changes in machine parameters, such as increased penetration depth of the top comb, and their impact on the percentage of combed cotton waste, can be displayed directly or, if necessary, after adaptation to manually entered values.

[0067] Figure 4 A combing head 20 is shown, and at least eight combing heads are mounted on a combing machine. For the sake of overview, this embodiment only shows and describes one combing head 20, wherein, apart from a common drive unit and sliver holder, the details shown here are those mounted on each of these combing heads. The combing head 20 further comprises two fiber spool transport rollers 21, 22, wherein the forward fiber spool transport roller 21 is connected to a transmission mechanism 23 driven by a motor 24. The second fiber spool transport roller 22 is connected to the first fiber spool transport roller 21 via a belt drive, so that the two fiber spool transport rollers 21, 22 unwind the cotton spool 1 at the same rotational speed. The cotton spool 1 is located on the fiber spool transport rollers 21, 22, and the cotton sliver 4 is unwound from the cotton spool by rotational movement. Figure 1The difference lies in that the fiber roll transport rollers 21, 22 can be mounted on a support 11, which is pivotally supported by a hinge 12 and positioned on one side on a sensor 13 that can be configured as a weighing device. The sensor 13 thereby always obtains the real-time weight of the cotton roll 1, which continuously decreases with respect to the time of the combing process. The sensor 13 thereby transmits the real-time cotton weight or the remaining weight of the cotton roll 1 to the controller S, where the weight is processed in relation to the cotton length or optionally to time, thereby processing the entry mass for each combing head 20 in relation to the unfolded length of the cotton sliver 4, or processing the entry mass corresponding to each unit of time. An embodiment having a sensor 13 for obtaining the real-time fiber roll weight is suitable for… Figure 6 and Figure 7 The implementation plan in the document is necessary. All other details of the combing process are related to... Figure 1 Same. Not shown here. Figure 1 The spring-loaded pressure roller 30 is used for automatically placing fiber rolls.

[0068] Apart from the unidentifiable support portion of the cotton roll 1 described herein, Figure 5 And with Figure 2 The same. The support portion is provided on the support portion 11 by means of the fiber roll transport rollers 21, 22, and the support portion 11 is pivotally supported by means of the hinge 12 and is placed on one side on the sensor 13 which can be configured as a weighing device.

[0069] This pertains to the basis of the present invention. Figure 6 In the second embodiment, data is processed in the controller S to determine the combed waste. This embodiment requires the presence of sensors 131-13 for determining the fiber lap weight. n In the input device E, which can be configured as a keyboard or display, the fiber spool fineness in ktex, the number of combing cycles in nips, and the tension value Δ∩ between the driven fiber spool transport rollers 21 / 22 and the feed cylinder 26 are input. 21-22 / 26 For each comb head 20, the sensors 131-13 nThe data used to obtain the real-time fiber roll weight is transmitted to the controller S. The fiber roll weight decreases as the combing machine operates, allowing the controller to calculate the input mass per meter traveled or the input mass per time interval, relative to the unfolded length of the cotton 4 or relative to any time interval t. Simultaneously, sensor signals are transmitted to the controller S through the guide bar flare 42, allowing the controller to obtain the output mass of the combed fibers relative to the length of the fiber sliver F, or the output mass per unit time. The difference between the input mass and the output mass relative to the length of the fiber sliver F or the output mass per unit time is used to determine the combing waste. The absolute or relative combing waste is displayed by means of an output device A, which can be configured as a display. According to the invention, the device and method are simpler to construct than those in the prior art. In particular, the measuring device after each combing head 20 is eliminated, and only the total sliver mass (output mass) of the fiber sliver F on the guide bar flare 42 is obtained. The sensor 131-13 n The data can be used by the controller S to determine the sliver quality fluctuation of each combing head 20 under short time intervals. This sliver quality fluctuation can be directly offset by the tension between the driven fiber lap transport rollers 21, 22 and the feed cylinder 26. The display of the sliver quality fluctuation and / or combing waste can optionally be used to detect faults, such as defects in the top comb or wear on the round comb. Figure 6 The method according to the invention in the embodiments involves calculating the percentage of combed cotton waste, which is further based on a nominal value for fiber lap fineness. When deviating from the nominal value for fiber lap fineness in ktex, the tension of the sliver can be changed, or alternatively, the sensors 131-13 can be checked. n Calibration. Because the fiber infeed and outfeed quality are precisely determined, the calculations are highly accurate, thus requiring only one calibration of the measuring device 131-13 with minimal cost, except in cases of significant deviation from the fiber roll fineness rating. nIf the tension value remains unchanged, fluctuations in fiber input quality do not need to be considered. Even after this, the calculated combing waste rate remains sufficiently accurate. Production data such as the number of combing cycles, tension value, conveyor speed, and sliver fineness are routinely monitored on the combing machine and automatically applied to the combing waste calculation. When the process changes, such as with a new sample fineness or feed rate, the manually entered data must be adapted to the new values. The measurement system on the guide sliver bell 42 for determining output quality can be used in parallel to determine the flow coefficient (CV) value, or an existing system for deriving the flow coefficient (CV) value can be used to determine output quality. Determining the quality at the combing machine's output on the guide sliver bell 42, or at a single head, allows for monitoring of sliver breakage or web breakage. Therefore, current monitoring methods, such as those on the fiber web conveyor, can also be omitted. Detected or known data are used to derive and display production values ​​during the process, such as the combing waste percentage. The effects of machine parameter variations, such as increased penetration depth of the top comb or defects in the top comb, and their impact on the percentage of combed waste, can be displayed directly or, if necessary, after adaptation to manually input values. Adjustments on the comber are simplified because the impact on combed waste is directly displayed, involving all important combing head components based on the feed rate, such as the top comb, circular comb, draw distance, engagement time, and the movement of the separating rollers. Furthermore, good standard values ​​for production planning, the amount of waste output, and for determining the machine parameters of the comber, which have not been displayed on the comber to date, are derived. Preferably, the diameter and rotational speed of the fiber spool transport rollers 21, 22 can be applied. 21 、∩ 22 This is to monitor the fiber roll weight related to the fiber roll length. For this purpose, sensors 131-13... n The real-time fiber roll weight of each fiber roll relative to time t is determined, and the unfolded length of each fiber roll is derived from the diameter and rotational speed of the fiber roll transport roller 22. Both pieces of information can be used equivalently for quality control, where the amount of combed waste cotton relative to the length of the fiber sliver F, used in the textile preparation process, is a common value. This allows the determination of the incoming fiber quality corresponding to each unfolded fiber roll length for each fiber roll, thereby detecting fluctuations in cotton weight that can be offset by the tension between the driven fiber roll transport rollers 21, 22 and the feed cylinder 26.

[0070] Figure 7 Another embodiment specifies a fully automated determination of combing waste, eliminating the need for manual input of values. (Compared to...) Figure 6 The difference in the embodiments is that the sensors 131-13 can be set up in groups to determine the weight of the fiber roll.n For example, a support 11 with hinge 12 and sensor 13 is arranged for four combing heads. Two driven, separate fiber lap transport rollers 21, 22 are provided for each cotton lap 1. This embodiment does not include an input device E for fiber lap fineness, number of combing cycles, and tension pull value between the driven fiber lap transport rollers 21 / 22 and the feed cylinder 26. For the group of combing heads 20, the sensors 131-13... n The real-time fiber spool weight data of the group, from which the data is derived, is transmitted to the controller S. As the comber operates, the fiber spool weight of the entire group decreases, allowing the controller to calculate the incoming mass corresponding to each time interval t. Simultaneously, a sensor signal is transmitted to the controller S via the guide bell 42, with which the output mass of the combed fibers relative to the length of the fiber sliver F, or the output mass per unit time, is derived. The amount of combed waste is calculated by the difference between the incoming mass and the output mass relative to the length of the fiber sliver F, or the output mass per unit time. The absolute or relative amount of combed waste is displayed by means of an output device A, which can be configured as a display. If the guide bell 41 has a measuring device, another improvement is achieved, allowing the combed fiber sliver mass to be determined after each combing head 20. By reusing existing technology and combining the determination of the incoming sliver mass group by group, deviations between individual combing heads can be determined and can be offset by the tension between the driven fiber spool transport rollers 21, 22 and the feed cylinder 26.

[0071] According to the present invention, Figure 7 The apparatus and method of the embodiments are simpler in construction than those of the prior art. This is achieved by acquiring data from the sensors 131-13 in groups. n Data obtained for a single cotton lap or a group of two, four, or eight cotton laps can be used by the controller S to determine the sliver quality fluctuations on each combing head 20 or the group of combing heads 20 under short time intervals. These sliver quality fluctuations can be directly offset by the tension between the driven fiber lap transport rollers 21 / 22 and the feed cylinder 26. According to the invention... Figure 7 The method of the embodiment involves automatically determining the combing waste percentage, which is based on a measured value of fiber sliver fineness or fiber sliver mass, regardless of whether the fiber sliver mass entering each combing head is detected individually or as a group of combing heads. When deviating from the rated value of fiber sliver fineness in ktex, the tension of the sliver can be changed. Because the fiber entry and exit mass are precisely determined, the calculation is highly accurate, thus requiring only one calibration of the measuring device 131-13 with minimal cost. n41, 42. If the tension of the sliver remains unchanged, fluctuations in fiber entry quality need not be considered. Even so, the calculated combing waste is still sufficiently accurate. Production data such as the number of combing cycles, sliver tension, conveying speed, and sliver fineness are routinely detected on the combing machine and provided to the controller, where they are automatically applied to the combing waste calculation. The measurement system on the guide bell 42 for determining output quality can be used in parallel to determine the flow coefficient (CV) value, or an existing system for deriving the flow coefficient (CV) value can be used to determine output quality. Determining the quality at the output of the combing machine at the guide bell 42, or at a single head, allows for monitoring of sliver breakage or web breakage. Therefore, current monitoring methods, such as those on the fiber web conveyor, can be omitted here. Detected or known data are used to derive and display production values ​​during the process, such as the percentage of combing waste. The effects of machine parameter variations, such as increased penetration depth of the top comb, and their impact on the percentage of combed waste, can be displayed directly or, if necessary, adapted to manually entered values. Adjustments on the comber are simplified because the impact on combed waste is directly displayed. This involves the movement of all important combing head components based on the feed rate, such as the top comb, circular comb, draft distance, engagement time, and separating rollers. Furthermore, good standard values ​​for production planning, the amount of waste output, and for determining the machine parameters of the comber—values ​​that have not been displayed on the comber until now—are derived.

[0072] The rotational speed of fiber roll transport rollers 21 and 22 can be preferably applied. 21 、∩ 22 This is to monitor the fiber roll weight related to the fiber roll length. For this purpose, sensors 131-13... n The real-time fiber roll weight of the cotton roll group with respect to time t is determined, and the unfolded length of each fiber roll is obtained by the diameter and rotational speed of the fiber roll transport rollers 21, 22. The sliver quality fluctuation of each combing head can be obtained by means of a measuring device on the guide bell 41, even if it is necessary to obtain the incoming fiber quality of the entire group consisting of two, four, or eight cotton rolls. The difference in the measurement values ​​of the measuring devices at the individual guide bell 41s in the combing head group allows for the determination of sliver quality fluctuations. For each cotton roll 1, the incoming fiber quality corresponding to each unfolded fiber roll length can be determined, thereby detecting fluctuations in cotton weight, which can be offset by the tension between the driven fiber roll transport rollers 21, 22 and the feed cylinder 26.

[0073] Based on the difference between the fiber roll weight and the fiber roll sleeve, the exact time point of the idling of the cotton roll 1 can be predicted. Currently used systems, such as those that rely on beam reflection, are no longer necessary.

[0074] The weight of the fiber roll can be determined based on the mass of the fiber roll entering within a specific time unit. For this purpose, the unfolded length can be determined, for example, in relation to the diameter and rotational speed of the fiber roll transport rollers 21 and 22. This allows for quality control of the winding machine related to the fiber roll weight.

[0075] Precise detection of the fiber roll weight in relation to the fiber roll length allows for targeted changes in the fiber roll weight on the upstream winding machine. This can be achieved, for example, by pulling the roll to obtain a constant fiber roll weight in relation to the fiber roll length, or by intentionally creating a desired variation in the fiber roll weight.

[0076] According to these embodiments, the tension pull value Δ∩ of the sliver 4 between the driven fiber roll transport rollers 21, 22 and the feed cylinder 26 is... 21-22 / 26 The tensioning is adjustable. Its advantage is that the already driven winding rollers 21 and 22 can be used for pulling. Since not every comber has driven winding rollers, tensioning of the sliver can also be achieved through other pulling devices arbitrarily positioned before the feed cylinder 26. Figure 7 The embodiment that can automatically determine the percentage of cotton waste during combing can be applied to both individual combing heads and combing head assemblies.

[0077] The opposite approach, namely, probing the incoming quality using measurement techniques on the combing machine and manually determining the output quality, is theoretically equally conceivable.

[0078] List of reference numerals

[0079] 1 cotton roll

[0080] 1a Winding sleeve

[0081] 4 Tampons

[0082] 10 strips

[0083] 11 Support section

[0084] 12 Hinges

[0085] 131-13 n sensor

[0086] 20 Fine-combed hair

[0087] 21, 22 Fiber roll transport rollers

[0088] 23 Transmission Mechanism

[0089] 24 motors

[0090] 25 rolls

[0091] 26. Feed in silicone

[0092] 27. Clamping plate mechanism

[0093] 28 Lever

[0094] 29 Springs

[0095] 30 pressure rollers

[0096] 31 axes

[0097] 32 Separating Rollers

[0098] 33 Round Comb

[0099] 34, 35, 36 Laura

[0100] 37. Cotton guide plate

[0101] 38 Top Comb

[0102] 39 Output Station

[0103] 40. Drafting mechanism

[0104] 41 Guide bar flared mouth

[0105] 42 guide bar flared mouth

[0106] A output device

[0107] E input device

[0108] F, F1-F8 fiber strips

[0109] K combing machine

[0110] S controller

[0111] m strips of quality

[0112] N Combing cycle count

[0113] △∩ 21-22 / 26 Tension and tension value

[0114] ∩ 21 、∩ 22 Rotation speed of fiber roll transport roller

Claims

1. A method for determining the amount of combed cotton waste from a combing machine having multiple combing heads (20), wherein, At least one sliver (4) is unwound from the spool (1) on each combing head (20), and the sliver is conveyed to the nipper mechanism (27) by means of a feeding cylinder (26). The combed cotton is also combed out and sucked away from the sliver (4) by means of a top comb and a round comb (33, 38), and the resulting fiber fluff is transformed into fiber strips (F1-Fn) by means of a first guide flare (41). The fiber strips are then stretched together with other fiber strips from other combing heads into a single fiber strip (F), wherein, the following is obtained: The sliver mass of all combed fiber slivers before the coiler is characterized by manually inputting the sliver mass (m) of all cotton rolls entering the comber, the number of combing cycles (N), the tension and pull value of the cotton sliver (4), and the feed amount by means of the input device (E), and converting it into the sliver mass to be combed in the controller (S), wherein the controller (S) deducts the sliver mass output by the first sensor from the sliver mass to be combed, and displays the amount of combed cotton waste by means of the output device (A).

2. A method for determining the amount of combed cotton waste from a combing machine having multiple combing heads (20), wherein, At least one sliver (4) is unwound from the spool (1) on each combing head (20), and the sliver is conveyed to the clamping mechanism (27) by means of a feeding cylinder (26). The combed cotton is also combed out and sucked away from the sliver (4) by means of a top comb and a round comb (33, 38), and the resulting fiber fluff is transformed into fiber strips (F1-Fn) by means of a first guide flare (41). The fiber strips are stretched together with other fiber strips from other combing heads into a single fiber strip (F), wherein the spool on the combing head is obtained. The weight and sliver mass of all combed fiber slivers before the coiler are characterized in that the length of the unfolded sliver (4) or the weight of the sliver roll or weight change over a specific time is converted into the incoming sliver mass (m) in the controller (S), and the sliver mass output by the first sensor is deducted from the sliver mass to be combed, and the amount of combed cotton waste is displayed by means of the output device (A), wherein the number of combing cycles (N) and the tension pull value of the sliver (4) are manually input by means of the input device (E).

3. The method according to claim 2, characterized in that, The weight of the cotton roll (1) is determined on each comb head (20).

4. The method according to claim 2, characterized in that, The common weight of the cotton rolls (1) of the combed head group is obtained by means of the second sensor (13).

5. The method according to claim 1, characterized in that, The variation in the tension of the sliver (4) is used to offset the fluctuations in the quality of the fibers to be combed on each combing head (20).

6. The method according to claim 2, characterized in that, The variation in the tension of the sliver (4) is used to offset the fluctuations in the quality of the fibers to be combed on each combing head (20).

7. The method according to any one of claims 1-6, characterized in that, By obtaining the output bar mass, the breakage of the bar can be determined.

8. The method according to any one of claims 1-6, characterized in that, The amount of combed cotton that is lost can be changed by adjusting the machine parameters.

9. The method according to claim 8, characterized in that, The machine parameters include variations in the insertion depth of the top comb, the pull-out distance, and / or the number of combing cycles.

10. The method according to claim 4, characterized in that, The quality of the combed strips after each combing head is determined with the help of a third sensor.

11. The method according to any one of claims 1-6, characterized in that, The tension (Δ∩) of the sliver (4) between the driven fiber roll transport rollers (21, 22) and the feed cylinder (26) 21-22 / 26 It is adjustable.

12. A combing machine having multiple combing heads (20), wherein, On each combing head (20), at least one sliver (4) is unwound from the spool (1), and the sliver is conveyed to the nipper mechanism (27) by means of a roller (25) and a feed cylinder (26). In addition, combing waste is combed out and sucked away from the sliver (4) by means of a top comb and a round comb (33, 38), and the resulting fiber fluff is transformed into fiber strips (F1-Fn) by means of a first guide flare (41). The fiber strips are stretched together with other fiber strips from other combing heads into a single fiber strip (F). The invention is characterized by manually inputting the sliver mass (m), combing cycle number (N), tension and feed amount of the sliver (4) of all cotton rolls into the combing machine by means of an input device (E). In addition, a controller (S) is constructed, which converts the input data into the sliver mass to be combed. The controller (S) deducts the sliver mass output by the first sensor from the sliver mass to be combed, and displays the amount of combed cotton waste by means of an output device (A).

13. A combing machine having multiple combing heads (20), wherein, On each combing head (20), at least one sliver (4) is unwound from the spool (1), and the sliver is conveyed to the clamping mechanism (27) by means of a roller (25) and a feed cylinder (26). In addition, combing waste is combed out and sucked away from the sliver (4) by means of a top comb and a round comb (33, 38), and the resulting fiber fluff is transformed into fiber strips (F1-Fn) by means of a first guide flare (41). The fiber strips are stretched together with other fiber strips from other combing heads into a single fiber strip (F), wherein the weight of the spool on the combing head is determined by means of a second sensor (13). The sliver mass of all combed fiber slivers before the coiler is obtained by means of a first sensor. The controller (S) is configured to process the sensor data by converting the length of the unfolded sliver (4) or the weight of the sliver roll or weight change over a specific time into the incoming sliver mass (m), and by subtracting the output sliver mass obtained by the first sensor from the sliver mass to be combed and displaying the amount of combed cotton waste by means of an output device (A). Each combing head has a device for changing the tension pull value of the sliver (4).

14. The combing machine according to claim 13, characterized in that, Each comb head (20) has a second sensor (13) for determining the weight of the cotton roll (1).

15. The combing machine according to claim 13, characterized in that, The combing head assembly has a second sensor (13) for determining the common weight of the cotton roll.

16. The combing machine according to claim 13, characterized in that, The combing machine has driven fiber spool transport rollers (21, 22), wherein the tension value (Δ∩) can be adjusted by means of changes in the rotational speed of the driven fiber spool transport rollers (21, 22) and / or changes in the rotational speed of the feed cylinder (26). 21-22 / 26 ).

17. The combing machine according to any one of claims 12-16, characterized in that, The first sensor is mounted on the second guide bar flare (42) to detect the breakage of the bar.

18. The combing machine according to claim 15, characterized in that, After each combing head (20), a third sensor for determining the quality of the strip is set on the first guide bar flare (41).

19. The combing machine according to claim 10 or 11, characterized in that, A controller (S) is constructed to detect the weight of the cotton roll relative to the length of the cotton roll by means of the diameter and rotational speed of the fiber roll transport rollers (21, 22).

Images