Device and method for monitoring the sliding condition between a textile machine drive belt and a spindle

Abstract

The present application belongs to the field of textile machinery, and solves the problem of how to monitor the sliding degree between the transmission belt and the spindle, and relates to a sliding state monitoring device between the transmission belt and the spindle of a textile machine, comprising a twist sensor, which is aligned with the yarn forming a loop on the outlet side of the front roller of the textile machine, and acquires the actual twist value of the yarn; a main controller, which is provided with a calculation unit and a control unit, calculates the actual sliding coefficient between the transmission belt and the spindle according to the actual twist value and the set twist value, judges whether the actual sliding coefficient is within the range of the allowable sliding coefficient, and adjusts the speed of the spindle motor accordingly. The present application also relates to a sliding state monitoring method between the transmission belt and the spindle of a textile machine, which calculates the actual sliding coefficient between the transmission belt and the spindle by acquiring the actual twist value and combining the set twist value, judges whether the actual sliding coefficient is within the range of the allowable sliding coefficient, and adjusts the speed of the spindle motor accordingly. The effect of monitoring the sliding state between the transmission belt and the spindle is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of textile machinery, and relates to a device for monitoring the sliding state between a transmission belt and a spindle of a textile machine, and to a method for monitoring the sliding state between a transmission belt and a spindle of a textile machine. BACKGROUND

[0002] In a textile machine, after yarn is sent out by a front roller, the yarn is wound onto a bobbin on a spindle, and the bobbin is driven to rotate by the spindle, so that the yarn is twisted. The spindle is driven to rotate by a spindle motor, and the driving shaft of the spindle motor and the spindle transmit power through a transmission belt. Since the spindle rotates at a high speed, slippage may occur between the transmission belt and the spindle. The twist deviation of the yarn is large, and unqualified yarn is produced, which may even cause serious problems such as component damage and a significant decrease in service life. SUMMARY

[0003] The present application aims to provide a device for monitoring the sliding state between a transmission belt and a spindle of a textile machine, and solves the problem of how to monitor the degree of slippage between the transmission belt and the spindle.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0005] The present application provides a device for monitoring the sliding state between a transmission belt and a spindle of a textile machine, comprising:

[0006] a twist sensor, which is aligned with yarn that forms a loop on the outlet side of a front roller of a textile machine, and which acquires a loop value formed by actual rotation of the yarn;

[0007] a main controller, which is provided with a calculation unit and a control unit, is connected to the twist sensor to acquire the loop value formed by actual rotation of the yarn, and calculates an actual twist value from the loop value and the linear speed of the surface of the front roller of the textile machine, records a set twist value in the calculation unit, calculates the difference between the actual twist value and the set twist value, and calculates an actual sliding coefficient between the transmission belt and the spindle according to the actual twist value and the set twist value, records a range of allowable sliding coefficients in the calculation unit, judges whether the actual sliding coefficient is within the range of allowable sliding coefficients, sends a speed adjustment signal to the control unit when the actual sliding coefficient exceeds the range of allowable sliding coefficients, and sends a twist correction signal to the control unit when the actual sliding coefficient is within the range of allowable sliding coefficients, and the control unit is connected to the calculation unit, receives the speed adjustment signal, and sends a speed adjustment instruction signal to a spindle motor for driving the transmission belt.

[0008] Preferably, a plurality of twist sensors are provided corresponding to a plurality of spindles, a data screening unit is provided in the main controller, the data screening unit screens a plurality of actual twist values obtained by the plurality of twist sensors, invalid data is deleted according to a screening method recorded in the data screening unit, and an average twist value is calculated using the remaining data.

[0009] Preferably, after the spindle motor is speed-regulated, the actual twist value of the yarn is obtained again through the twist sensor, the actual sliding coefficient is calculated through the calculation unit, and it is judged whether the actual sliding coefficient is within the allowable sliding coefficient range; when the actual sliding coefficient is within the allowable sliding coefficient range, the calculation unit sends a stop speed-regulating signal to the control unit, and the control unit receives the stop speed-regulating signal and sends a stop speed-regulating instruction signal to the spindle motor.

[0010] Preferably, the main controller also records an allowable twist value range, the calculation unit judges whether the actual twist value is within the allowable twist value range, and when the actual twist value is not within the allowable twist value range, the calculation unit sends a twist adjustment signal to the control unit, and the control unit sends an adjustment instruction to adjust the rotating speed of the spindle or the front roller so that the actual twist value is within the allowable twist value range.

[0011] Preferably, the main controller also records an alarm sliding coefficient, and when the actual sliding coefficient reaches the alarm sliding coefficient, the calculation unit sends an alarm signal to the control unit, and the control unit sends a shutdown instruction signal so that the textile machine is shut down.

[0012] Thanks to the above technical solution, the present application has the following advantages compared with the prior art:

[0013] The textile machine transmission belt and spindle between sliding state monitoring device of the present application, since the twist sensor is used to monitor the actual twist value of the yarn, the difference between the actual twist value and the set twist value is calculated and the sliding coefficient between the transmission belt and the spindle is calculated, it is judged whether the sliding coefficient is within the allowable sliding coefficient range, so as to evaluate the sliding degree between the transmission belt and the spindle, and the sliding coefficient is speed-regulated when it exceeds the allowable sliding coefficient range, so as to protect the equipment.

[0014] A textile machine transmission belt and spindle between sliding state monitoring method is also provided, which comprises:

[0015] S1, obtaining the actual twist value of the yarn forming a loop on the outlet side of the front roller;

[0016] S2, calculate the difference between the actual twist value and the set twist value, and calculate the actual sliding coefficient between the transmission belt and the spindle according to the actual twist value and the set twist value, judge whether the actual sliding coefficient is within the allowable sliding coefficient range, if the actual sliding coefficient is within the allowable sliding coefficient range, correct the twist value, if the actual sliding coefficient is not within the allowable sliding coefficient range, send a speed regulation instruction signal to the spindle motor for driving the transmission belt to make the spindle motor speed regulation.

[0017] Preferably, in S1, a plurality of actual twist values respectively corresponding to a plurality of spindles are obtained, and invalid data is deleted according to a screening method, and the average twist value is calculated as the measured actual twist value by using the remaining data.

[0018] Preferably, after the spindle motor is speed-regulated, the actual twist value of the yarn is obtained again, and the actual sliding coefficient is calculated and judged whether it is within the allowable sliding coefficient range, and when the actual sliding coefficient is within the allowable sliding coefficient range, the speed regulation of the spindle motor is stopped.

[0019] Preferably, in S2, the actual twist value is also compared with the allowable twist value range, and if it exceeds the allowable twist value range, the speed of the spindle or the front roller is adjusted to make the actual twist value within the allowable twist value range.

[0020] Preferably, in S1, it is also judged whether the actual sliding system has reached the alarm sliding coefficient, and if it reaches the alarm sliding coefficient, the textile machine is stopped.

[0021] Due to the use of the above technical scheme, the present application has the following advantages compared with the prior art:

[0022] The sliding state monitoring method between the transmission belt and the spindle of the textile machine of the present application obtains the actual twist value of the yarn forming a loop on the outlet side of the front roller, calculates the difference between the actual twist value and the set twist value, calculates the actual sliding coefficient between the transmission belt and the spindle according to the actual twist value and the set twist value, judges whether the actual sliding coefficient is within the allowable sliding coefficient range, and if the actual sliding coefficient is not within the allowable sliding coefficient range, sends a speed regulation instruction signal to the spindle motor for driving the transmission belt to make the spindle motor speed regulation, so as to protect the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Some specific embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference signs in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0024] Figure 1 is a structural schematic diagram of a preferred embodiment of the sliding state monitoring device between the transmission belt and the spindle of the textile machine of the present application;

[0025] Figure 2 This is a step diagram of the method for monitoring the sliding state between the transmission belt and the spindle of a textile machine according to the present invention;

[0026] The reference numerals in the attached figures are explained as follows:

[0027] 1. Twist sensor; 2. Main controller; 21. Calculation unit; 22. Control unit; 23. Data filtering unit; 3. Front roller; 4. Spindle; 5. Drive belt; 6. Spindle motor. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1 The illustrated textile machine drive belt and spindle sliding condition monitoring device includes a twist sensor 1 and a main controller 2, used to monitor the sliding friction state between the drive belt 5 and the spindle 4. The drive belt 5 is mounted on the drive shaft of the spindle motor 6, and the drive belt 5 is fitted onto the spindle 4, so that the spindle 4 is driven by the spindle motor 6. Ideally, there is no sliding friction between the drive belt 5 and the spindle 4. However, because the drive belt 5 drives the spindle 4 to rotate at high speed, sliding friction may occur. If sliding friction occurs, it may damage the machine; on the other hand, the twist value may not meet the requirements.

[0032] Twist sensor 1 is aligned with the yarn forming the air pocket on the exit side of front roller 3 to monitor the twist of the yarn at this location, providing relatively accurate readings. Multiple twist sensors 1 are configured, each aligned with a corresponding yarn. Twist sensor 1 acquires the actual air pocket value formed by the yarn's rotation.

[0033] The main controller 2 is connected with the twist sensor 1 to receive the monitoring signal. The main controller 2 is provided with a data screening unit 23, a calculation unit 21 and a control unit 22. The main controller 2 receives the actual loop value monitoring data of the yarn transmitted by the twist sensor 1, and calculates the actual twist value through the loop value and the surface line speed of the front roller of the textile machine. The data screening unit 23 uses the pre-set screening method to delete invalid data. The remaining data is transmitted to the calculation unit 21, which calculates the average twist value, compares it with the set twist value recorded in the calculation unit 21, and calculates the difference. And use the twist difference to calculate the sliding coefficient between the transmission belt 5 and the spindle 4.

[0034] The calculation unit 21 also records the allowed sliding coefficient range, and the calculation unit 21 judges whether the actual sliding coefficient is within the allowed sliding coefficient range. When the actual sliding coefficient exceeds the allowed sliding coefficient range, the calculation unit 21 sends a speed regulation signal to the control unit 22. When the actual sliding coefficient is within the allowed sliding coefficient range, the calculation unit 21 sends a twist correction signal to the control unit 22. The control unit 22 is connected with the calculation unit 21, receives the speed regulation signal, and sends a speed regulation instruction signal to the spindle motor 6, so that the spindle motor 6 regulates the speed.

[0035] When the spindle motor 6 regulates the speed, the actual twist value of the yarn is obtained again through the twist sensor 1 after a set time, and the actual sliding coefficient is calculated according to the above method. When the actual sliding coefficient falls within the allowed sliding coefficient range, the calculation unit 21 sends a stop speed regulation signal to the control unit 22, and the control unit 22 receives the stop speed regulation signal and sends a stop speed regulation instruction signal to the spindle motor 6, so that the spindle motor 6 stops regulating the speed.

[0036] The data screening unit 23 can also not be provided, and the calculation unit 21 can directly use the monitoring data of the twist sensor 1 for calculation. The twist sensor 1 can also be provided with only one, and multiple twist sensors can make the monitoring data more accurate.

[0037] The main controller 2 also records an alarm sliding coefficient. When the actual sliding coefficient reaches the alarm sliding coefficient, the calculation unit 21 sends an alarm signal to the control unit 22, and the control unit 22 sends a shutdown instruction signal to make the textile machine stop, so as to protect the machine.

[0038] The main controller 2 also records a range of allowable twist value, the calculation unit 21 judges whether the actual twist value is within the range of allowable twist value, when the actual twist value is not within the range of allowable twist value, the calculation unit 21 sends a twist adjustment signal to the control unit 22, the control unit 22 sends an adjustment instruction to the spindle motor 6 or the roller driving mechanism to adjust the rotating speed of the spindle 4 or the front roller 3, so that the actual twist value is within the range of allowable twist value.

[0039] Figure 2 The steps of the method for monitoring the sliding state between the transmission belt and the spindle of the textile machine are shown, comprising:

[0040] S1, obtaining the actual twist value of the yarn forming a loop on the outlet side of the front roller;

[0041] S2, calculating the difference between the actual twist value and the set twist value, and calculating the actual sliding coefficient between the transmission belt and the spindle according to the actual twist value and the set twist value, judging whether the actual sliding coefficient is within the range of allowable sliding coefficient, if the actual sliding coefficient is within the range of allowable sliding coefficient, correcting the twist value, if the actual sliding coefficient is not within the range of allowable sliding coefficient, sending a speed adjustment instruction signal to the spindle motor for driving the transmission belt to make the spindle motor adjust the speed.

[0042] In S1, a plurality of actual twist values corresponding to a plurality of spindles are obtained, and invalid data is deleted according to a screening method, and the average twist value is calculated as the measured actual twist value using the remaining data.

[0043] As preferred, after the spindle motor adjusts the speed, the actual twist value of the yarn is obtained again, and the actual sliding coefficient is calculated and judged whether it is within the range of allowable sliding coefficient, when the actual sliding coefficient is within the range of allowable sliding coefficient, the speed adjustment of the spindle motor is stopped.

[0044] As preferred, in S2, the actual twist value is also compared with the range of allowable twist value, if it exceeds the range of allowable twist value, the rotating speed of the spindle or the front roller is adjusted to make the actual twist value within the range of allowable twist value.

[0045] As preferred, in S1, it is also judged whether the actual sliding system has reached the alarm sliding coefficient, if it reaches the alarm sliding coefficient, the textile machine is stopped.

[0046] In summary, the actual twist value is monitored to indirectly monitor the sliding state between the transmission belt and the spindle, so that the large degree of sliding friction between the transmission belt and the spindle can be avoided, and the machine can be protected.

[0047] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A device for monitoring the sliding condition between a textile machine drive belt and a spindle, characterized in that, The twist sensor (1) is arranged on the yarn forming a loop on the outlet side of the front roller (3) of the textile machine, and obtains the actual twist value of the yarn formed by the rotation; The main controller (2) is provided with a calculation unit (21) and a control unit (22), and is connected with the twist sensor (1) to obtain the actual twist value of the yarn formed by the rotation, and calculates the actual twist value according to the twist value and the surface linear speed of the front roller of the textile machine. The calculation unit (21) records the set twist value, calculates the difference between the actual twist value and the set twist value, and calculates the actual sliding coefficient between the transmission belt and the spindle according to the actual twist value and the set twist value. The calculation unit (21) also records the allowable sliding coefficient range, and judges whether the actual sliding coefficient is within the allowable sliding coefficient range. When the actual sliding coefficient exceeds the allowable sliding coefficient range, the calculation unit sends a speed regulation signal to the control unit (22). When the actual sliding coefficient is within the allowable sliding coefficient range, the calculation unit (21) sends a twist correction signal to the control unit (22). The control unit (22) is connected with the calculation unit (21), receives the speed regulation signal and sends a speed regulation instruction signal to the spindle motor (6) for driving the transmission belt (5). A plurality of twist sensors (1) are arranged corresponding to a plurality of spindles (4). The main controller (2) is provided with a data screening unit (23) which screens a plurality of actual twist values obtained by a plurality of twist sensors (1), deletes invalid data according to the screening method recorded in the data screening unit (23), and calculates the average twist value by using the remaining data. After the spindle motor (6) is regulated in speed, the actual twist value of the yarn is obtained by the twist sensor (1) again, and the calculation unit (21) calculates the actual sliding coefficient and judges whether the actual sliding coefficient is within the allowable sliding coefficient range. When the actual sliding coefficient is within the allowable sliding coefficient range, the calculation unit (21) sends a stop speed regulation signal to the control unit (22). The control unit (22) receives the stop speed regulation signal and sends a stop speed regulation instruction signal to the spindle motor (6).

2. The device for monitoring the sliding condition between the drive belt and the spindle of a textile machine according to claim 1, characterized in that: The main controller (2) also records the allowable twist value range, and the calculation unit (21) judges whether the actual twist value is within the allowable twist value range. When the actual twist value exceeds the allowable twist value range, the calculation unit (21) sends a twist adjustment signal to the control unit (22). The control unit (22) sends an adjustment instruction to adjust the rotating speed of the spindle (4) or the front roller (3), so that the actual twist value is within the allowable twist value range.

3. The textile machine drive belt and spindle slippage condition monitoring device of claim 1, wherein: ​ 4. The textile machine drive belt and spindle slippage condition monitoring device of claim 1, wherein: The main controller (2) also records an alarm slip coefficient, when the actual slip coefficient reaches the alarm slip coefficient, the calculation unit (21) sends an alarm signal to the control unit (22), the control unit (22) sends a stop command signal, so that the textile machine stops.

5. A method for monitoring the sliding condition between a textile machine drive belt and a spindle, characterized in that, Comprise: S1, the actual twist value of the yarn forming a loop on the outlet side of the front roller is obtained, a plurality of actual twist values corresponding to a plurality of spindles are obtained, invalid data is deleted according to a screening method, and the average twist value calculated by using the remaining data is taken as the measured actual twist value; S2, the difference between the actual twist value and the set twist value is calculated, the actual slip coefficient between the transmission belt and the spindle is calculated according to the actual twist value and the set twist value, it is judged whether the actual slip coefficient is within the allowable slip coefficient range, if the actual slip coefficient is within the allowable slip coefficient range, the twist value is corrected, if the actual slip coefficient is not within the allowable slip coefficient range, a speed regulation command signal is sent to the spindle motor for driving the transmission belt to make the spindle motor speed regulation.

6. The method of claim 5, wherein: After the spindle motor speed regulation, the actual twist value of the yarn is obtained again, the actual slip coefficient is calculated, and it is judged whether the actual slip coefficient is within the allowable slip coefficient range, when the actual slip coefficient is within the allowable slip coefficient range, the speed regulation of the spindle motor is stopped.

7. The method of claim 5, wherein: In S2, the actual twist value is also compared with the allowable twist value range, if it exceeds the allowable twist value range, the speed of the spindle or the front roller is adjusted to make the actual twist value within the allowable twist value range.

8. The method of claim 5, wherein: In S1, it is also judged whether the actual slip system reaches the alarm slip coefficient, if the alarm slip coefficient is reached, the textile machine is stopped.

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