A device and method for automatic stoppage of a multi-channel rotor yarn sliver end

Abstract

The application relates to a device and a method for automatically stopping a multi-channel rotor color spinning sliver breakage, which comprises a multi-channel rotor spinning sliver feeding mechanism, a sliver placing mechanism, a pressure applying mechanism and a signal processing and servo motor control center, wherein the multi-channel rotor spinning sliver feeding mechanism comprises three asynchronous feeding rollers for controlling the feeding speed of the sliver, three servo motors, a fiber collecting device and a sliver state sensor, and each sliver placing mechanism is provided with a corresponding weight sensor. The application aims to automatically find and quickly judge whether abnormal phenomena exist in the sliver feeding, timely inform the stopper to quickly solve the problem that the color spun yarn color is different from the target yarn color due to the multi-channel rotor spinning single / multiple sliver breakage, and the yarn has thick and thin problems, effectively reduce the generation of waste yarn and guarantee the production quality of the multi-channel rotor color spun yarn.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rotor spinning color spinning equipment, in particular to a multi-channel rotor spinning color spinning fiber sliver feeding breakage detection and self-stopping device and method. BACKGROUND

[0002] The existing digital rotor spinning yarn forming mechanism includes three-channel asynchronous feeding device, cotton collecting device, collection feeding roller, carding roller, rotor, yarn guide roller and other main components. The running process is: the fiber sliver is fed into three asynchronous feeding rollers in turn, sent into the collection feeding roller through the cotton collecting device, stripped and opened into single fibers by the high-speed rotating carding roller, enters the rotor for condensation, merging and twisting into yarn through the fiber conveying channel, is guided out through the yarn guide tube, and forms the cheese. By adjusting the speed of the asynchronous feeding roller, the ratio of colored fibers in the yarn and the yarn linear density are changed, and different thickness, different color gradient yarns, segment color yarns, color section yarns, slub yarns and bamboo joint yarns are spun.

[0003] Digital rotor spun yarn is spun from multiple fiber slivers. When a fiber sliver breaks, but the remaining fiber slivers continue to be fed, the breakage self-stopping device owned by the rotor spinning machine will not start, and the yarn will continue to be spun. The color of the rotor spun colored spun yarn produced is different from the target yarn color, and the yarn fineness is reduced, causing uneven yarn evenness and waste of raw materials. On the existing multi-channel rotor spinning machine, there is no breakage self-stopping device for a single fiber sliver. When a fiber sliver breaks, the unqualified yarn produced needs to be detected manually, which not only wastes raw materials but also increases labor. Therefore, a new method and detection device are needed to detect the state of the fiber sliver during spinning and to realize automatic and safe and economical production. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the background art and provide a multi-channel rotor spinning color spinning fiber sliver breakage self-stopping device to solve the yarn defect problem caused by the breakage of one or some fiber slivers, ensure yarn quality and reduce waste yarn production.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] On the one hand, a multi-channel rotor spinning color spinning fiber sliver breakage self-stopping device includes:

[0007] The multi-channel rotor spinning fiber strip feeding mechanism comprises three asynchronous feeding rollers for controlling the feeding speed of the fiber strip, three servo motors respectively in transmission connection with the three asynchronous feeding rollers, a fiber collecting device located behind the three asynchronous feeding rollers, fiber strip state sensors installed on the fiber collecting device, and a spinning machine shell; the fiber strip state sensors correspond to the fed fiber strips, and the number of the fiber strip state sensors is equal to the number of the fed fiber strips;

[0008] The fiber strip placing mechanism is used for placing the fiber strips, and a corresponding weight sensor is arranged on each fiber strip placing mechanism;

[0009] The pressure applying mechanism is located above the three asynchronous feeding rollers and comprises three aprons corresponding to the three asynchronous feeding rollers;

[0010] The signal processing and servo motor control center is electrically connected with the multi-channel rotor spinning fiber strip feeding mechanism and the fiber strip placing mechanism respectively and is used for controlling the cooperative work between the mechanisms.

[0011] Further, the asynchronous feeding rollers comprise a first asynchronous feeding roller, a second asynchronous feeding roller and a third asynchronous feeding roller, and the servo motors comprise a first servo motor, a second servo motor and a third servo motor;

[0012] A first belt pulley is arranged on a first rotating shaft of the first servo motor, the first belt pulley is in transmission connection with a second belt pulley through a first belt, and the second belt pulley is in an integral structure with the first asynchronous feeding roller; a third belt pulley is arranged on a second rotating shaft of the second servo motor, the third belt pulley is in transmission connection with a fourth belt pulley through a second belt; a fifth belt pulley is arranged on a third rotating shaft of the third servo motor, the fifth belt pulley is in transmission connection with a sixth belt pulley through a third belt, and the sixth belt pulley is in an integral structure with the third asynchronous feeding roller; the fourth belt pulley, the second belt pulley integrated with the first asynchronous feeding roller, the sixth belt pulley integrated with the second asynchronous feeding roller and the third asynchronous feeding roller are located on the same roll shaft; the first asynchronous feeding roller and the third asynchronous feeding roller are respectively connected with the roll shaft through bearings; when the roll shaft rotates, the first asynchronous feeding roller and the third asynchronous feeding roller are in a locked state and do not rotate with the roll shaft, and the second asynchronous feeding roller rotates with the rotation of the roll shaft;

[0013] When the first servo motor rotates, the first belt pulley rotates, the rotation of the first belt pulley drives the second belt pulley to rotate, thereby driving the first asynchronous feeding roller integrated with the second belt pulley to rotate;

[0014] When the second servo motor rotates, the third belt pulley rotates, the rotation of the third belt pulley drives the fourth belt pulley to rotate, thereby driving the roll shaft to rotate, and the rotation of the roll shaft drives the second asynchronous feeding roller to rotate;

[0015] When the third servo motor rotates, the fifth belt pulley rotates, the fifth belt pulley drives the sixth belt pulley to rotate, thereby driving the third asynchronous feed roller integrated with the sixth belt pulley to rotate.

[0016] Further, the first servo motor, the second servo motor and the third servo motor are respectively electrically connected with the signal processing and servo motor control center, and the signal processing and servo motor control center controls the rotation of the first servo motor, the second servo motor and the third servo motor.

[0017] Further, the weight sensor is used to detect whether the fiber strip weight information is abnormal, and the fiber strip state sensor is used to detect the existing state of the fiber strip in the spinning process; the weight sensor and the fiber strip state sensor are respectively electrically connected with the signal processing and servo motor control center.

[0018] Further, the multi-channel rotor spinning fiber strip feeding mechanism further comprises a spinning machine shell, and the spinning machine shell is provided with indicator lights, the indicator lights correspond one-to-one to the fiber strip state sensors and the weight sensors, and the indicator lights are turned on to indicate that the fiber strip state detection sensor detects the absence of the fiber strip or the weight sensor detects that the fiber strip weight information is abnormal.

[0019] Further, the indicator lights are electrically connected with the signal processing and servo motor control center, and the signal processing and servo motor control center controls the corresponding indicator light to be turned on when receiving an abnormal signal.

[0020] Further, the fiber strip state sensor is one of a pressure sensor, an infrared sensor and a magneto-electric sensor.

[0021] Further, when the fiber strip state sensor is a pressure sensor, the weight sensor is a weighing sensor.

[0022] Further, the detection range of the weight sensor as the weighing sensor is 0g-10000g, the accuracy can be accurate to 0.01g, and a warning is sent when the detection data is close to 500g, and 500g is the weight of the empty tube.

[0023] On the other hand, a detection method for multi-channel rotor color spinning fiber strip breakage self-stop is provided, which is applied to the multi-channel rotor color spinning fiber strip breakage self-stop device, and the detection method comprises:

[0024] First, the fiber strip state sensor detects the existing state of each fiber strip in the spinning process to detect whether the fiber strip is missing;

[0025] When it is detected that the fiber strip is in a missing state, the indicator light corresponding to the missing fiber strip is turned on to remind the fiber strip feeder that the fiber strip is missing at this position.

[0026] When the fiber strip is detected to be in the existing state, the weight information of each fiber strip is detected by the weight sensor again;

[0027] The signal processing and servo motor control center receives the weight information, calculates the length of the feeding according to the fixed weight, calculates the feeding speed of the fiber strip in a single cycle time, and compares the feeding speed with the feeding speed set by the stopper system to calculate the speed difference value, when the speed difference value exceeds the threshold value of ±5%, the signal processing unit and the servo motor control center send a signal to the corresponding servo motor to stop the rotation of the corresponding servo motor.

[0028] The technical scheme provided by the application has at least the following beneficial effects:

[0029] Through the cooperation of the fiber strip state sensor, the weight sensor and the signal processing and servo motor control center, the existence state and the movement speed of each fiber strip in the spinning process are detected, the automatic discovery and judgment of the abnormality of the fiber strip feeding are realized, the stopper is reminded in time to discover and handle the problems such as broken ends, blocked feeding device and feeding not according to the predetermined program caused by accidental factors in time, the generation of waste yarn is reduced, and the production quality of multi-channel rotor color spinning is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 A top view of a multi-channel rotor color spinning fiber strip broken end self-stopping device provided by an exemplary embodiment of the application is shown;

[0032] Figure 2 A front view of a multi-channel rotor spinning fiber strip feeding mechanism provided by an exemplary embodiment of the application is shown;

[0033] Figure 3 A partial enlarged view of A in Figure 2

[0034] Figure 4 A schematic diagram of the overall mechanism of a multi-channel rotor color spinning fiber strip broken end self-stopping device provided by an exemplary embodiment of the application is shown;

[0035] Figure 5 A schematic diagram of the structure of a fiber strip placing mechanism provided by embodiment 4 of the application is shown;

[0036] ​Figure 6 A structure schematic diagram of the fiber strip placing mechanism provided by Embodiment 5 of the present application is shown;

[0037] Explanation of reference signs:

[0038] 1-1 first asynchronous feed roller, 1-2 second asynchronous feed roller, 1-3 third asynchronous feed roller;

[0039] 2-1 first servo motor, 2-2 second servo motor, 2-3 third servo motor;

[0040] 3-1 first belt, 3-2 second belt, 3-3 third belt;

[0041] 4-1 first pulley, 4-2 second pulley, 4-3 third pulley, 4-4 fourth pulley, 4-5 fifth pulley, 4-6 sixth pulley;

[0042] 5-1 first rotating shaft, 5-2 second rotating shaft, 5-3 third rotating shaft;

[0043] 6 pressure applying mechanism;

[0044] 7 fiber collecting device;

[0045] 8 spinning device shell;

[0046] 9-1 first fiber strip state sensor, 9-2 second fiber strip state sensor, 9-3 third fiber strip state sensor;

[0047] 10-1 first indicator light, 10-2 second indicator light, 10-3 third indicator light, 10-4 fourth indicator light, 10-5 fifth indicator light, 10-6 sixth indicator light;

[0048] 11 signal processing and servo motor control center;

[0049] 12-1 first weight sensor, 12-2 second weight sensor, 12-3 third weight sensor;

[0050] 13-1 first fiber strip, 13-2 second fiber strip, 13-3 third fiber strip;

[0051] 14 fiber strip placing mechanism. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0053] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0054] A kind of multi-channel rotor color spinning sliver broken end self-stop device, comprising:

[0055] Multi-channel rotor spinning sliver feeding mechanism, it includes three asynchronous feed rollers, three servo motors respectively with the transmission connection of the three asynchronous feed rollers, fiber collection device located behind the three asynchronous feed rollers, fiber sliver state sensor and spinning machine shell installed on the fiber collection device;

[0056] Sliver placement mechanism for placing fiber sliver, each fiber sliver placement mechanism is provided with a corresponding weight sensor;

[0057] Pressure mechanism, it is located above the three asynchronous feed rollers, it includes three aprons corresponding to the three asynchronous feed rollers;

[0058] Signal processing and servo motor control center, it is electrically connected with the multi-channel rotor spinning sliver feeding mechanism and the fiber sliver placement device respectively, for controlling the cooperative work between each mechanism;

[0059] The detection method for the multi-channel rotor color spinning sliver broken end self-stop device provided in the embodiment of the application, the detection method comprises:

[0060] When carrying out rotor color spinning production, first, fiber sliver state detection sensor detects, determines the existence of each fiber sliver on the feeding device, if the fiber sliver does not exist, the indicator light is directly turned on, reminding the stopper that the feeding fiber sliver is missing at this place;

[0061] When the fiber sliver state sensor ensures the existence of fiber sliver, the weight sensor on the fiber sliver placement device starts to work, and the weight information of fiber sliver is obtained by using the weight sensor,

[0062] The signal processing unit calculates the actual feeding speed of each fiber sliver according to the reduced weight of the feeding fiber sliver in unit time, and compares the feeding speed set by the stopper system to calculate the difference value.

[0063] When the speed difference exceeds the threshold value of ±5%, the signal processing unit and servo motor control center send a signal to the servo motor to stop the rotation of the servo motor, and control the corresponding indicator light to turn on.

[0064] The application mainly detects the existence state and movement speed of each fiber sliver in the spinning process, realizes automatic discovery and rapid judgment of whether the fiber sliver feeding is abnormal, timely reminds the stopper to timely discover and handle the broken end, clogging feeding device and feeding problems not according to the predetermined program caused by accidental factors, and reduces the generation of waste yarn. Multi-channel rotor color spinning sliver broken end self-stop device will cooperate with fine yarn electronic clearer, ensure that yarn is spun according to the program setting, and ensure the accuracy of yarn color and thickness.

[0065] Figure 1 This invention provides a top view of an apparatus for automatically stopping the breakage of multi-channel rotor-spun yarn fiber sliver, according to an exemplary embodiment of this application. Figure 2 A front view of a multi-channel rotor spinning fiber sliver feeding mechanism provided in an exemplary embodiment of this application is shown; Figure 3 It shows Figure 2 A magnified view of a section at point A in the middle; Figure 4 This illustration shows an overall schematic diagram of a device for automatically stopping the breakage of multi-channel rotor-spun yarn fiber sliver, provided in an exemplary embodiment of this application.

[0066] refer to Figures 1-4 As shown, a device for automatically stopping the breakage of multi-channel rotor spinning fiber sliver includes a multi-channel rotor spinning fiber sliver feeding mechanism, a fiber sliver placement mechanism 14, a pressure application mechanism 6, and a signal processing and servo motor control center 11.

[0067] The multi-channel rotor spinning fiber sliver feeding mechanism includes a first asynchronous feeding roller 1-1, a second asynchronous feeding roller 1-2, a third asynchronous feeding roller 1-3, a first servo motor 2-1 driven by the first asynchronous feeding roller 1-1, a second servo motor 2-2 driven by the second asynchronous feeding roller 1-2, a third servo motor 2-3 driven by the third asynchronous feeding roller 1-3, a fiber collecting device 7 located behind the three asynchronous feeding rollers, and the fiber collecting device 7 is equipped with a first fiber sliver status sensor 9-1, a second fiber sliver status detection sensor 9-2, a third fiber sliver status detection sensor 9-3, and a spinning machine housing 8.

[0068] The spinning machine housing 8 is equipped with a first indicator light 10-1, a second indicator light 10-2, and a third indicator light 10-3. The first indicator light 10-1 corresponds to the first fiber sliver status sensor 9-1, the second indicator light 10-2 corresponds to the second fiber sliver status sensor 9-2, and the third indicator light 10-3 corresponds to the third fiber sliver status sensor 9-3. When one or all of the first, second, and third indicator lights 10-1, 10-2, and 10-3 are lit, it indicates that the corresponding fiber sliver status sensor has detected a missing fiber sliver. The fourth indicator light 10-4 corresponds to the first weight sensor 12-1, the fifth indicator light 10-5 corresponds to the second weight sensor 12-2, and the sixth indicator light 10-6 corresponds to the third weight sensor 10-3. When one or all of the fourth, fifth, and sixth indicator lights 10-4 are lit, it indicates that the weight sensor has detected an abnormality in the weight information of the corresponding fiber sliver.

[0069] The fiber strip state sensor, the weight sensor, the first indicator light 10-1, the second indicator light 10-2, the third indicator light 10-3, the fourth indicator light 10-4, the fifth indicator light 10-5, and the sixth indicator light 10-6 are electrically connected with the signal processing unit and servo motor control center 11 respectively, the signal processing unit and servo motor control center 11 receives the data signal of the fiber strip state sensor or the weight sensor, and controls the corresponding indicator light to be turned on.

[0070] The fiber collection device 7 can be installed with different numbers of fiber strip state sensors according to the actual number of fed-in fiber strips, and the fiber strip state sensors correspond to the fiber strips one by one.

[0071] When the fiber strip state sensor is a pressure sensor, the fiber strip detection sensor is a weighing sensor.

[0072] The weight range detected by the weighing sensor is 0g-10000g, the accuracy can be accurate to 0.01g, and a warning is set when the detection data is close to 500g, and 500g is the weight of the empty tube.

[0073] The first fiber strip 13-1, the second fiber strip 13-2, and the third fiber strip 13-3 are respectively placed on the fiber strip placing mechanism 14, the fiber strip placing mechanism 14 is installed with the first weight sensor 12-1, the second weight sensor 12-2, and the third weight sensor 12-3, which can automatically detect the weight information of the fiber strip and timely transmit data to the signal processing unit and servo motor control center.

[0074] The pressure applying mechanism 6 is used for applying a certain pressure to the fed-in fiber strip, and the applied pressure can be adjusted to ensure the smooth feeding of the fiber strip, and is located above the three asynchronous feeding rollers, and includes three aprons corresponding to the three asynchronous feeding rollers; the position of the apron can be manually adjusted by manual adjustment to adjust the pressure applied to the fiber strip by the pressure applying mechanism.

[0075] The three asynchronous feeding rollers are independently controlled in speed:

[0076] The first pulley 4-1 is arranged on the first rotating shaft 5-1 of the first servo motor 2-1, and the first pulley 4-1 is in transmission connection with the second pulley 4-2 through the first belt 3-1, and the second pulley 4-2 is in an integral structure with the first asynchronous feed roller 1-1; the third pulley 4-3 is arranged on the second rotating shaft 5-2 of the second servo motor 2-2, and the third pulley 4-3 is in transmission connection with the fourth pulley 4-4 through the second belt 3-2; the fifth pulley 4-5 is arranged on the third rotating shaft 5-3 of the third servo motor 2-3, and the fifth pulley 4-5 is in transmission connection with the sixth pulley 4-6 through the third belt 3-3, and the sixth pulley 4-6 is in an integral structure with the third asynchronous feed roller 1-3; the fourth pulley 4-4, the second pulley 4-2 integrated with the first asynchronous feed roller 1-1, the second asynchronous feed roller 1-2 and the sixth pulley 4-6 integrated with the third asynchronous feed roller 1-3 are located on the same roll shaft; the first asynchronous feed roller 1-1 and the third asynchronous feed roller 1-3 are connected with the roll shaft through bearings respectively; when the roll shaft rotates, the first asynchronous feed roller 1-1 and the third asynchronous feed roller 1-3 are in a locked state and do not rotate with the roll shaft, and the second asynchronous feed roller 1-2 rotates with the rotation of the roll shaft;

[0077] When the first servo motor 2-1 rotates, the first pulley 4-1 is driven to rotate, the first pulley 4-1 drives the second pulley 4-2 to rotate, thereby driving the first asynchronous feed roller 1-1 integrated with the second pulley 4-2 to rotate;

[0078] When the second servo motor 2-2 rotates, the third pulley 4-3 is driven to rotate, the third pulley 4-3 drives the fourth pulley 4-4 to rotate, thereby driving the roll shaft to rotate, and the roll shaft drives the second asynchronous feed roller 1-2 to rotate;

[0079] When the third servo motor 2-3 rotates, the fifth pulley 4-5 is driven to rotate, the fifth pulley 4-5 drives the sixth pulley 4-6 to rotate, thereby driving the third asynchronous feed roller 1-3 integrated with the sixth pulley 4-6 to rotate.

[0080] Example 1:

[0081] The first fiber strip state sensor 9-1 is a pressure sensor, that is, a fiber strip pressure state sensor; the fiber strip storage of the first fiber strip state sensor 9-1 is composed of a spring and a metal resistor.

[0082] The working principle of the fiber strip state sensor is:

[0083] When the fiber flows through the sensor, the metal resistance will be pressed, the spring will be slightly deformed, and the signal of the existence of the fiber strip will be generated. The pressure sensing range of the fiber strip state sensor is 0N~5N, and the accuracy is 0.01N. When the first fiber strip 13-1 is broken or consumed, the spring is not deformed, the first fiber strip state sensor 9-1 corresponding to the first fiber strip 13-1 finds that the first fiber strip 13-1 has no pressure on the first fiber strip state sensor 9-1, and the first fiber strip state sensor 9-1 transmits the electrical signal without pressure to the signal processing unit and servo motor control center 11. The signal processing unit and servo motor control center 11 immediately stops the operation of all servo motors of the spindle position, the fiber strip stops feeding, the first indicator light 10-1 corresponding to the first fiber strip state sensor 9-1 of the spindle position is turned on, and the worker quickly locates the faulty spindle to solve the broken end problem or replace the fiber strip.

[0084] Example 2:

[0085] Different from example 1, the first fiber strip state sensor 9-1 selects an infrared sensor, that is, a fiber strip photoelectric state sensor, and the first fiber strip state sensor 9-1 is composed of a light source and a receiver.

[0086] The working principle of the fiber strip state sensor is:

[0087] When the fiber flows through the sensor, the fiber will quickly reflect the laser emitted by the light source and transmit it to the receiver, thereby generating a signal indicating the existence of the fiber strip. When the first fiber strip 13-1 is broken or consumed, the receiver of the first fiber strip state sensor 9-1 corresponding to the first fiber strip 13-1 does not receive the laser reflected by the first fiber strip 13-1, and the first fiber strip state sensor 9-1 transmits the electrical signal without reflected light source to the signal processing unit and servo motor control center 11. The signal processing unit and servo motor control center 11 immediately stops the operation of all servo motors of the spindle position, the fiber strip stops feeding, the first indicator light 10-1 corresponding to the first fiber strip state sensor 9-1 of the spindle position is turned on, and the worker quickly locates the faulty spindle to solve the broken end problem or replace the fiber strip.

[0088] Example 3:

[0089] Different from example 1, the first fiber strip state sensor 9-1 selects a magneto-electric sensor, and the first fiber strip state sensor 9-1 is composed of a magnetic probe.

[0090] The working principle of the fiber strip state sensor is:

[0091] Three first fiber strips 13-1, second fiber strips 13-2 and third fiber strips 13-3 with different colors (red, yellow and blue) and the same weight of 8g / 5m are spun by 13S rotor spinning. Although the feeding speeds of the three fiber strips are different, the total feeding amount of fibers is 4.128g per second, and the fiber state sensor 9-1 detects a stable electromagnetic field at this time. When the first fiber strip 13-1 breaks, the fiber flow feeding is reduced by one third, and the magnetic probe of the fiber strip state sensor 9-1 detects a large fluctuation of the stable magnetic field, and the magnetic field strength decreases. The first fiber strip fiber state sensor 9-1 transmits the electrical signal of the change of the magnetic field to the signal processing unit and servo motor control center 11, which immediately stops the operation of all servo motors of the spindle position, stops the feeding of the fiber strip, and the first indicator light 10-1 corresponding to the first fiber strip state sensor 9-1 of the spindle position lights up, and the worker quickly locates the spindle with the fault to solve the problem of broken ends.

[0092] Example 4:

[0093] Referring to Figure 5 The weight sensor is selected as a weighing sensor.

[0094] The working principle of the weight sensor is:

[0095] The first fiber strip 13-1 generates a pressure of 0.5N on the first fiber strip state sensor 9-1, and the first fiber strip state sensor 9-1 finds that the fiber strip exists, but the movement of the first asynchronous feeding roller 1-1 is abnormal due to problems such as fiber strip blockage or servo motor damage, and the first weight sensor 12-1 under the fiber strip placing mechanism 14 drum selects a weighing sensor. First, the weight of the fiber strip is 8000g, and 1000g is the empty drum weight. The minimum range can be set according to the actual empty drum weight. The weight of the fiber strip is within the detection range, and the fiber strip has sufficient residual amount. However, the fiber strip cannot move normally or the movement speed is abnormal, and the weight reduction amount of the fiber strip per unit time is abnormal. The first weight sensor 12-1 transmits the electrical signal of the detection abnormality to the signal processing unit and servo motor control center 11, which immediately stops the operation of all servo motors of the spindle position, stops the feeding of the fiber strip, and the fourth indicator light 10-4 corresponding to the first fiber strip state sensor 12-1 of the spindle position lights up, and the worker quickly locates the spindle with the fault to solve the problem.

[0096] Example 5:

[0097] Referring to Figures 1-4 and Figure 6 The weight sensor is selected as a weighing sensor.

[0098] The working principle of the weight sensor is:

[0099] When spinning 13S rotor spinning, three first slivers 13-1, second slivers 13-2 and third slivers 13-3 with different colors (red, yellow and blue) and a weight of 8 g / 5 m are hung on the sliver placing mechanism 14, the weight of each is 5000 g, which is greater than 500 g, 500 g is the weight of the empty tube, and the weight sensor is within the detection range, and the sliver has sufficient excess. After the pressure mechanism 6 and the first asynchronous feed roller 1-1, the second asynchronous feed roller 1-2 and the third asynchronous feed roller 1-3, the first servo motor 2-1 controls the rotation of the first asynchronous feed roller 1-1; the second servo motor 2-2 controls the rotation of the second asynchronous feed roller 1-2, and the third servo motor 2-3 controls the rotation of the third asynchronous feed roller 1-3, the first sliver 13-1, the second sliver 13-2 and the third sliver 13-3 are sent to the fiber collection device 7, and then enter the rotor spinning machine after passing through the first sliver state sensor 9-1, the second sliver state sensor 9-2 and the third sliver state sensor 9-3. After the first sliver state sensor 9-1, the second sliver state sensor 9-2 and the third sliver state sensor 9-3 confirm that the sliver exists, the first sliver weight sensor 12-1, the second sliver weight sensor 12-2 and the third sliver weight sensor 12-3 respectively acquire the weight of the corresponding first sliver 13-1, second sliver 13-2 and third sliver 13-3 at this time.

[0100] When producing rotor spinning segment colored yarn, the feeding speed of the first sliver 13-1, the second sliver 13-2 and the third sliver 13-3 is set as shown in Table 1, and the first sliver weight sensor 12-1, the second sliver weight sensor 12-2 and the third sliver weight sensor 12-3 respectively send weight information to the signal processing unit and servo motor control center 11 at the end of each cycle. The weight information calculates the length of the feeding according to the weight, and calculates the feeding speed of the sliver in a single cycle time. The calculated speed is compared with the set speed, and the difference of ±5% is set as the threshold value.

[0101]

[0102] L: feeding length

[0103] G: weight loss of sliver per unit cycle

[0104] R: weight per meter of sliver

[0105]

[0106] V: feeding speed

[0107] T: unit cycle time

[0108] Table 1

[0109]

[0110] If the first fiber strip 13-1 does not break, due to the existence of impurities adhered in the feed roller and the belt, although the feed roller can run smoothly, there is a certain error between the feed speed and the program setting, and the actual weighing and speed are shown in Table 2. The first weighing sensor 12-1 sends the fiber feed amount in a unit cycle, the first weighing sensor 12-1 transmits the signal to the signal processing unit and servo motor control center 11, the signal processing unit and servo motor control center 11 calculates that the feed speed is 1.952 m / s, compared with the set speed 2.064 m / s, the difference between the two is 5.4%, which exceeds the ±5% threshold, the signal processing unit and servo motor control center 11 turns on the fourth indicator lamp 10-4 corresponding to the first fiber strip weighing sensor 12-1 of the control spindle position, and stops the operation of all servo motors in the spindle position, reminding the worker to clean the impurities and maintain the servo motor.

[0111] Table 2

[0112]

[0113] The above is only an optional embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for automatic stoppage of end breakage in multi channel rotor coloured spun sliver, characterised in that, The application relates to a multi-channel rotor spinning fiber strip feeding mechanism. The multi-channel rotor spinning fiber strip feeding mechanism comprises three asynchronous feeding rollers for controlling the fiber strip feeding speed, three servo motors in transmission connection with the three asynchronous feeding rollers respectively, a fiber collecting device located behind the three asynchronous feeding rollers, and fiber strip state sensors installed on the fiber collecting device; the fiber strip state sensors correspond to the fed fiber strips, and the number of the fiber strip state sensors is equal to the number of the fed fiber strips; The fiber strip placing mechanism is used for placing the fiber strips, and each fiber strip placing mechanism is provided with a corresponding weight sensor; A pressing mechanism is located above the three asynchronous feeding rollers and comprises three aprons corresponding to the three asynchronous feeding rollers respectively; A signal processing and servo motor control center is electrically connected with the multi-channel rotor spinning fiber strip feeding mechanism and the fiber strip placing mechanism respectively, and is used for controlling the cooperative work between the mechanisms, When the fiber strip is detected to be in the existing state, the weight information of each fiber strip is detected by the weight sensor; When the weight information is received by the signal processing and servo motor control center, the feeding length is calculated according to the fixed weight, the fiber strip feeding speed in a single cycle time is calculated, and the speed difference is calculated by comparing with the feeding speed set by the stopper system; when the speed difference exceeds the threshold value of plus or minus 5%, the signal processing unit and the servo motor control center send a signal to the corresponding servo motor to stop the rotation of the corresponding servo motor.

2. The apparatus for broken end stop motion of multi channel rotor coloured spun sliver of claim 1 wherein, The asynchronous feeding rollers comprise a first asynchronous feeding roller, a second asynchronous feeding roller and a third asynchronous feeding roller, and the servo motors comprise a first servo motor, a second servo motor and a third servo motor; The first servo motor is provided with a first belt pulley on a first rotating shaft, the first belt pulley is in transmission connection with a second belt pulley through a first belt, the second belt pulley is in an integral structure with the first asynchronous feeding roller; the second servo motor is provided with a third belt pulley on a second rotating shaft, the third belt pulley is in transmission connection with a fourth belt pulley through a second belt; the third servo motor is provided with a fifth belt pulley on a third rotating shaft, the fifth belt pulley is in transmission connection with a sixth belt pulley through a third belt, and the sixth belt pulley is in an integral structure with the third asynchronous feeding roller; the fourth belt pulley, the second belt pulley integrated with the first asynchronous feeding roller, the sixth belt pulley integrated with the third asynchronous feeding roller are located on the same roll shaft; the first asynchronous feeding roller and the third asynchronous feeding roller are connected with the roll shaft through bearings respectively; when the roll shaft rotates, the first asynchronous feeding roller and the third asynchronous feeding roller are in a fixed locking state and do not rotate with the roll shaft, and the second asynchronous feeding roller rotates with the rotation of the roll shaft; When the first servo motor rotates, the first belt pulley rotates, the second belt pulley rotates driven by the first belt pulley, and the first asynchronous feeding roller integrated with the second belt pulley rotates; When the second servo motor rotates, the third belt pulley rotates, the fourth belt pulley rotates driven by the third belt pulley, the roll shaft rotates, and the second asynchronous feeding roller rotates driven by the roll shaft; When the third servo motor rotates, the fifth belt pulley is driven to rotate, the fifth belt pulley drives the sixth belt pulley to rotate, thereby driving the third asynchronous feed roller integrated with the sixth belt pulley to rotate.

3. The apparatus for broken end stop motion of multi channel rotor coloured spun sliver of claim 2 wherein, The first servo motor, the second servo motor and the third servo motor are electrically connected with a signal processing and servo motor control center, and the signal processing and servo motor control center controls the rotation of the first servo motor, the second servo motor and the third servo motor.

4. The apparatus for automatic stop motion on breakage of multi channel rotor colored spun sliver as claimed in claim 1 wherein, The weight sensor is used to detect whether the weight information of the fiber sliver is abnormal, and the fiber sliver state sensor is used to detect the existing state of the fiber sliver in the spinning process.

5. The apparatus for automatic stop motion on breakage of multi channel rotor colored spun sliver as claimed in claim 1 wherein, The multi-channel rotor spinning fiber sliver feeding mechanism further comprises a spinning machine shell, and the spinning machine shell is provided with indicator lights, the indicator lights correspond to the fiber sliver state sensors and the weight sensors one by one, and the indicator lights are turned on to indicate that the fiber sliver state detection sensor detects the absence of the fiber sliver or the weight sensor detects the abnormality of the weight information of the fiber sliver.

6. The apparatus for broken end automatic stop motion of multi channel rotor coloured spun fibre sliver as claimed in claim 5 wherein, The indicator lights are electrically connected with the signal processing unit and the servo motor control center, and when the signal processing unit and the servo motor control center receive an abnormal signal, the corresponding indicator light is turned on.

7. The apparatus for automatic stop motion on breakage of multi channel rotor colored spun sliver as claimed in claim 1 wherein, The fiber sliver state sensor is one of a pressure sensor, an infrared sensor and a magneto-electric sensor. ​ 8. A device for end break self stoppage of multi channel rotor colored spun sliver as claimed in claim 7 wherein, When the fiber sliver state sensor is a pressure sensor, the weight sensor is a weighing sensor.

9. A device for the automatic interruption of the supply of a multi-channel rotor coloured spun sliver according to Claim 8, characterised in that, The weight range detected by the weighing sensor is 0g-10000g, the accuracy can be accurate to 0.01g, and a warning is given when the detected data is close to 500g, and 500g is the weight of the empty tube.

10. A method for detecting a break in a multi-channel rotor colored-spun sliver for stopping the spinning process, applied in the device for detecting a break in a multi-channel rotor colored-spun sliver for stopping the spinning process according to any one of claims 1 to 9, characterized in that, The detection method comprises: First, the fiber sliver state sensor detects the existing state of each fiber sliver in the spinning process, and detects whether the fiber sliver is missing; When it is detected that the fiber sliver is in a missing state, the indicator light corresponding to the missing fiber sliver is turned on to remind the stopper that the fiber sliver is missing; When it is detected that the fiber sliver is in an existing state, the weight sensor detects the weight information of each fiber sliver; The signal processing and servo motor control center receives the weight information, calculates the length of the feeding according to the fixed weight, calculates the fiber sliver feeding speed in a single cycle time, and compares the calculated speed difference with the feeding speed set by the stopper system, when the speed difference exceeds the threshold value of ±5%, the signal processing unit and the servo motor control center send a signal to the corresponding servo motor to stop the rotation of the corresponding servo motor.

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