Three-phase yarn accumulator

Abstract

The present application relates to the yarn feeding technical field, a kind of three-phase yarn accumulator, including control circuit, power supply circuit, microswitch, motor, the power supply circuit is used to access the first phase voltage and second phase voltage of three-phase power supply, and the working of control circuit board is powered after the voltage reduction, rectification and filtering of first phase voltage, the control circuit is connected with motor and microswitch, for accessing first phase voltage, second phase voltage and third phase voltage, and according to the state of microswitch to control second phase voltage and third phase voltage to power motor, wherein, the microswitch is used to detect whether yarn of yarn accumulator is full, and the motor is used to drive yarn accumulator to store yarn.The present application can filter false alarm, need not to lay zero line, reduce cable laying, reduce security risks.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile machinery, in particular to a three-phase yarn accumulator. BACKGROUND

[0002] The existing three-phase yarn accumulator adopts a 4-core flat wire, and an additional ground wire is connected to the shell. The ground wire is also the negative line of the working power supply of the three-phase yarn accumulator. Not only does it increase the laying of the line, but it also causes the shell of the textile equipment to be used as a zero line, an alarm signal line or an interference signal of the negative line to be connected to the circuit board. The existing three-phase yarn accumulator adopts a NE555 time base integrated circuit as a main control chip. The chip cannot achieve active filtering and is easily disturbed, which leads to false alarms of the three-phase yarn accumulator and further causes the circular machine to stop working due to false alarms. In addition, from the safety point of view, when there is external leakage, 220V alternating current will be connected to the three-phase yarn accumulator, which will damage the equipment and also cause the risk of electric shock to the personnel. SUMMARY

[0003] The purpose of the present application is to provide a three-phase yarn accumulator which can filter false alarms, does not require a zero line, reduces cable laying and reduces safety hazards.

[0004] In order to achieve the above purpose, the present application adopts the following technical solution:

[0005] A three-phase yarn accumulator comprises a yarn accumulator body, a control circuit, a power supply circuit, a micro switch and a motor. The power supply circuit is used to connect the first phase voltage and the second phase voltage of a three-phase power supply, and to supply power to the working of the control circuit board after the first phase voltage is subjected to voltage reduction, rectification and filtering. The control circuit is connected with the motor and the micro switch, and is used to connect the first phase voltage, the second phase voltage and the third phase voltage, and to control the second phase voltage and the third phase voltage to supply power to the motor according to the state of the micro switch. The micro switch is used to detect whether the yarn of the yarn accumulator is full, and the motor is used to drive the yarn accumulator to store yarn.

[0006] Further, the control circuit comprises a single-chip microcomputer U2. The first pin of the single-chip microcomputer U2 is connected with the first pin of an optical coupler U4 through a resistor R4. The second pin of the optical coupler U4 is grounded, and the fourth pin thereof is connected with one end of the micro switch through a resistor R5. The other end of the micro switch is connected with the third pin of a bidirectional thyristor Q1. The sixth pin of the optical coupler U4 is connected with the third pin of a bidirectional thyristor Q2. The first pin of the bidirectional thyristor Q1 is connected with the second phase voltage of a three-phase power supply, and the second pin thereof is connected with the second wiring terminal of the motor. The first pin of the bidirectional thyristor Q2 is connected with the third phase voltage of a three-phase power supply, and the second pin thereof is connected with the third wiring terminal of the motor.

[0007] Further, the 8th pin of the single-chip microcomputer U2 is connected with the yarn feeding alarm signal and the yarn feeding alarm signal, the 1st pin of the single-chip microcomputer U2 is connected with the base of the triode Q3, the emitter of the triode Q3 is connected with one phase voltage of the three-phase electricity through the diode D1, the collector of the triode Q3 outputs the yarn breaking alarm signal to the three-phase yarn accumulator power supply box through the resistor R1, and the yarn breaking alarm signal is sent to the circular knitting machine by the three-phase yarn accumulator power supply box.

[0008] Further, the 1st pin of the single-chip microcomputer U2 is connected with the light-emitting diode and the resistor R2 in sequence and then connected with the power supply, and the light-emitting diode is used for yarn breaking alarm indication.

[0009] Further, the yarn feeding alarm signal is triggered by the yarn feeding probe rod and the yarn breaking switch, one end of the yarn breaking switch is grounded, and the other end is connected to the 8th pin of the single-chip microcomputer U2.

[0010] Further, the yarn feeding alarm signal is triggered by the yarn feeding probe rod and the yarn breaking switch, one end of the yarn breaking switch is grounded, and the other end is connected to the 8th pin of the single-chip microcomputer U2.

[0011] Further, the power supply circuit comprises the diodes D2 and D3, the negative electrode of the diode D2 is connected to the positive electrode of the diode D3 through the voltage stabilizing diode D4, the voltage stabilizing diode D4 is respectively connected with the capacitors C1 and C2 in parallel, the positive electrode of the diode D2 is connected with the first phase voltage of the three-phase electricity power supply through the resistor R3, the negative electrode of the diode D3 is connected with the second phase voltage of the three-phase electricity, and the negative electrode of the diode D2 outputs the voltage VCC to the control circuit to provide the power supply voltage for the control circuit.

[0012] Further, the yarn accumulator is provided with a yarn accumulator socket, and the yarn accumulator socket is connected with the three-phase yarn accumulator power supply box connected with the three-phase electricity power supply through the 4-core flat wire.

[0013] Further, the yarn accumulator socket comprises four wiring terminals, three of which are respectively connected with three phase voltages of the three-phase electricity, and the other wiring terminal is used for connecting the yarn breaking alarm signal of the yarn accumulator.

[0014] Further, the working process of the three-phase yarn accumulator comprises:

[0015] S1, turning on the yarn accumulator power supply;

[0016] S2, the single-chip microcomputer U2 judges whether the yarn accumulator is broken, if yes, entering S4, if not, entering step S3;

[0017] S3, the motor works, and judges whether the yarn accumulator is full of yarn, if not, the motor continues to work, if yes, entering step S6;

[0018] S4, the single-chip microcomputer U2 delays to judge whether the yarn accumulator breaks, if yes, the motor stops working and enters step S5; if no, it enters step S3;

[0019] S5, the single-chip microcomputer U2 judges whether the yarn accumulator removes the broken yarn, if yes, it enters step S3; if no, it continuously judges whether the yarn accumulator removes the broken yarn;

[0020] S6, the motor stops working. Advantages

[0021] Compared with the prior art, the present application has at least the following advantages:

[0022] 1. The present application can easily filter false alarms caused by the vibration of the textile equipment during work or the up and down swing of the feed-in and feed-out feelers when feeding the yarn by setting a delay to judge whether the yarn accumulator breaks.

[0023] 2. The present application only needs a 4-core flat cable, which reduces the cable laying.

[0024] 3. The present application can work without a ground wire as zero line, which prevents electromagnetic interference signals from entering the circuit board, reduces the interference source and reduces false alarms. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure diagram of the three-phase power supply connection of the yarn accumulator of the present application.

[0026] Figure 2 It is a circuit diagram of the control circuit and power supply circuit of the present application.

[0027] Figure 3 It is a structure and connection diagram of each port of the circuit board where the control circuit of the present application is located.

[0028] Figure 4 It is a structure block diagram of the yarn accumulator of the present application.

[0029] Figure 5 It is a work flow chart of the yarn accumulator of the present application.

[0030] Figure 6 It is a yarn feeding structure diagram of the present application.

[0031] Figure 7 It is a circuit diagram of the yarn feeding alarm circuit of the present application.

[0032] In the figure, 1 is the yarn accumulator body; 2 is the yarn accumulator cylinder; 3 is the presser ring; 4 is the micro switch; 5 is the feed-out feeler; 6 is the feed-in feeler. DETAILED DESCRIPTION

[0033] For the purposes of the present invention, the technical solutions and advantages will be more apparent in the following detailed description in conjunction with the drawings and specific embodiments. In the following description, a number of specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be practiced in a number of different manners that are different from those described herein, and it can be modified by those skilled in the art without departing from the scope of the present invention, and therefore the present invention is not limited to the specific implementations disclosed below.

[0034] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the one element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are used for illustrative purposes only and are not intended to be limiting.

[0035] Referring to Figures 1-7 A three-phase yarn accumulator comprises a yarn accumulator body, the yarn accumulator body 1 comprises a yarn accumulator cylinder 2, and a yarn pressing ring 3 is arranged on the outer side of the yarn accumulator cylinder 2. The yarn accumulator body 1 is further provided with a yarn accumulator socket, and the yarn accumulator socket is connected with a three-phase yarn accumulator power supply box connected with a three-phase alternating current power supply through a four-core flat wire. The externally arranged three-phase yarn accumulator power supply box can supply power to multiple yarn storage lines, and each yarn storage line comprises multiple yarn accumulators, and at most 36 yarn accumulators. The yarn accumulator socket comprises four wiring terminals, three of which are respectively connected with three-phase voltages of three phases of three-phase power output by the three-phase yarn accumulator power supply box, and the other wiring terminal is used for connecting a yarn breakage alarm signal of the yarn accumulator, and the yarn breakage alarm signal is transmitted to a circular knitting machine through the three-phase yarn accumulator power supply box. In the embodiment of the present application, the power supply adopts three-phase alternating current 380V to supply power to the three-phase yarn accumulator power supply box, and the three-phase yarn accumulator power supply box converts the three-phase alternating current 380V power supply into three-phase four-wire alternating current 42V power supply. The three-phase yarn accumulator power supply box and the three-phase yarn accumulator are connected by four-core wires, and there is no need to connect the zero line to the three-phase yarn accumulator shell. A twist switch is connected between the yarn accumulator socket and the control circuit, and is used as a power switch of the three-phase yarn accumulator.

[0036] The three-phase yarn accumulator comprises a control circuit, a power supply circuit, a micro switch and a motor.

[0037] The power supply circuit is used for connecting the first phase voltage U1 and the second phase voltage V1 of three-phase power supply, and converting the first phase voltage U1 into low-voltage direct current power supply after voltage reduction, rectification and filtering to supply power for the working of the control circuit. The power supply circuit comprises diodes D2 and D3, the negative electrode of the diode D2 is connected to the negative electrode of the voltage stabilizing diode D4, the positive electrode of the voltage stabilizing diode D4 is connected to the positive electrode of the diode D3, the voltage stabilizing diode D4 is respectively connected in parallel with capacitors C1 and C2, the positive electrode of the diode D2 is connected with the first phase voltage U1 of three-phase power supply through the resistor R3, the negative electrode of the diode D3 is connected with the second phase voltage V1 of three-phase power supply, the negative electrode of the diode D2 outputs the voltage VCC to the control circuit to provide the supply voltage for the control circuit. Wherein the diodes D2 and D3 play the role of rectification, the resistor R3 plays the role of voltage reduction, and the capacitors C1 and C2 play the role of filtering. The three-phase voltage inputted by the power supply circuit is alternating current 42V voltage, and the voltage VCC is 5V direct current voltage. The first phase voltage U1 and the second phase voltage V1 form a power supply loop through the power supply circuit, and the working can be realized without the ground wire as zero line.

[0038] The control circuit is connected with a motor and a micro switch 4, and is used for connecting the first phase voltage U0, the second phase voltage V0 and the third phase voltage W0, and controlling the second phase voltage V0 and the third phase voltage W0 to supply power for the motor according to the state of the micro switch 4. The micro switch 4 is used for detecting whether the yarn of the yarn accumulator is full, and the motor is used for driving the yarn accumulator to store yarn. When the yarn accumulator is full, the presser ring 3 touches the micro switch 4, the micro switch 4 is opened, the motor stops working, and then the yarn accumulator stops working. When the yarn is used to the minimum yarn storage amount, the micro switch 4 is closed again, the motor is started, and the yarn accumulator continues to work.

[0039] The control circuit comprises a single-chip microcomputer U2, the first pin of the single-chip microcomputer U2 is connected with the first pin of the optical coupler U4 through the resistor R4, the second pin of the optical coupler U4 is grounded, the fourth pin of the optical coupler U4 is connected with one end of the micro switch through the resistor R5, the other end of the micro switch is connected with the third pin of the bidirectional thyristor Q1, and the sixth pin of the optical coupler U4 is connected with the third pin of the bidirectional thyristor Q2. The first pin of the bidirectional thyristor Q1 is connected with the second phase voltage V1 of three-phase power supply, the second pin of the bidirectional thyristor Q1 outputs the phase voltage V0, the phase voltage V0 is connected with the second wiring end of the motor, the first pin of the bidirectional thyristor Q2 is connected with the third phase voltage W1 of three-phase power supply, the second pin of the bidirectional thyristor Q2 outputs the phase voltage W0, the phase voltage W0 is connected with the third wiring end of the motor, and the third wiring end of the motor is connected with the phase voltage U0, that is, the first phase voltage U1 of three-phase power supply, which is provided by the three-phase yarn accumulator power supply box.

[0040] The 8th pin of the single-chip microcomputer U2 is connected with the yarn feeding alarm signal and the yarn feeding alarm signal, the 1st pin of the single-chip microcomputer U2 is connected with the base of the triode Q3, the emitter of the triode Q3 is connected with the negative pole of the diode D1, the positive pole of the diode D1 is connected with a phase voltage V1 of the three-phase electricity which is externally connected, the collector of the triode Q3 is connected with the resistance R1 to output the yarn breakage alarm signal GZ, the yarn breakage alarm signal GZ is connected with the three-phase yarn storage device power supply box through one core of the four-core wire, and the yarn breakage alarm signal is sent to the circular knitting machine by the three-phase yarn storage device power supply box. The 1st pin of the single-chip microcomputer U2 is connected with the light emitting diode and the resistance R2 in sequence and then connected with the power supply VCC, and the light emitting diode is used for yarn breakage alarm indication.

[0041] In the embodiment of the application, the yarn feeding alarm signal is triggered by the yarn feeding probe rod and the yarn breakage switch, one end of the yarn breakage switch is connected with the 5V power supply, and the other end is connected with the 8th pin of the single-chip microcomputer U2.

[0042] The yarn feeding alarm signal is generated by the light coupling U3 of the yarn feeding alarm circuit which is triggered by the yarn feeding probe rod. Specifically, in the yarn feeding alarm circuit, the 1st pin of the light coupling U3 is connected with the direct current voltage VCC output by the power supply circuit through the resistance R6, the 2nd pin and the 3rd pin of the light coupling U3 are connected with the ground, the 4th pin of the light coupling U3 outputs the yarn feeding alarm signal to the 8th pin of the single-chip microcomputer, and the 8th pin of the single-chip microcomputer is used as the input of the front yarn feeding and the rear yarn feeding alarm, that is, the input of the yarn breakage alarm signal, and the low level is effective.

[0043] In the working process of the application, when the single-chip microcomputer U2 does not receive the yarn breakage alarm signal, the 1st pin of the single-chip microcomputer U2 is in the default high level, and the light coupling MOC3023 works. When the connection ports RUN1 and RUN2 of the control circuit and the micro switch do not detect the yarn storage full signal generated by the micro switch, the three-phase alternating current U0, V0 and W0 provide power supply for the motor, and the motor works. When the single-chip microcomputer U2 receives the yarn feeding alarm signal or the yarn feeding alarm signal, that is, when the 8th pin of the single-chip microcomputer U1 is in the low level, the 1st pin of the single-chip microcomputer U1 is converted from the high level to the low level, and the motor stops working.

[0044] When the yarn feeding alarm signal or the yarn feeding alarm signal is effective, the 1st pin of the single-chip microcomputer U1 becomes the low level, the negative pole connection end D- of the light emitting diode is in the low level, the power supply VCC connected with the positive pole connection end of the light emitting diode is used as the alarm indication power supply, the light emitting diode is turned on, the triode Q3 (PNP type triode) is opened, V1 is rectified through the diode D1, the triode Q3, the resistance R1 and the three-phase yarn storage device power supply box, the yarn breakage alarm signal is sent to the circular knitting machine by the three-phase yarn storage device power supply box.

[0045] The working process of the three-phase yarn storage device includes:

[0046] S1, turn on the power supply of the yarn storage device;

[0047] S2, the single-chip microcomputer U2 of model STC8G1K08 is used as the main control chip of the three-phase yarn accumulator, the yarn breakage alarm signal and the yarn breakage alarm signal are detected, whether the yarn accumulator is broken is judged, if yes, S4 is entered, if not, step S3 is entered;

[0048] S3, the motor works, whether the yarn accumulator is full is judged, if not, the motor continues to work, if yes, step S6 is entered;

[0049] S4, the single-chip microcomputer U2 delays for a period of time to judge whether the yarn accumulator is broken again, if yes, the single-chip microcomputer U2 controls the second phase voltage V1 and the third phase voltage W1 to reverse the high and low levels, the motor stops working, at this time, the light-emitting diode is brightened to break the yarn warning, and outputs the yarn breakage alarm signal GZ to the three-phase yarn accumulator power box, the three-phase yarn accumulator power box further sends the yarn breakage alarm signal to the circular machine, and step S5 is entered; if not, step S3 is entered;

[0050] S5, the single-chip microcomputer U2 judges whether the yarn accumulator is removed from the yarn breakage, if yes, the single-chip microcomputer U2 controls the second phase voltage V1 and the third phase voltage W1 to reverse the high and low levels, the motor starts to work, the light-emitting diode alarm indicator light is extinguished, the yarn breakage alarm signal to the three-phase yarn accumulator power box is cut off, and step S3 is entered; if not, whether the yarn breakage is removed is continuously judged;

[0051] S6, the motor stops working.

[0052] It should be noted that the ground in the present application refers to the 5V power supply ground.

[0053] The above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A three-phase yarn storage device, comprising a yarn storage body, characterized in that, The system includes a control circuit, a power supply circuit, microswitches, and a motor. The power supply circuit receives the first and second phase voltages of a three-phase power supply, and steps down, rectifies, and filters the first phase voltage to power the control circuit board. The control circuit connects the motor and microswitches, receiving the first, second, and third phase voltages. It controls the second and third phase voltages to power the motor based on the state of the microswitches. The microswitches detect whether the yarn accumulator is full, and the motor drives the yarn accumulator to store yarn. The power supply circuit includes diodes D2 and D3. The cathode of diode D2 is connected to the anode of diode D3 through a Zener diode D4. The Zener diode D4 is connected in parallel with capacitors C1 and C2. The anode of diode D2 is connected to the first phase voltage of the three-phase power supply through a resistor R3, and the cathode of diode D3 is connected to the three-phase power supply. The second phase voltage of the diode D2 is connected to the control circuit via the negative output voltage VCC, providing a power supply voltage for the control circuit. The control circuit includes a microcontroller U2. The first pin of the microcontroller U2 is connected to the first pin of the optocoupler U4 via a resistor R4. The second pin of the optocoupler U4 is grounded, and its fourth pin is connected to one end of a microswitch via a resistor R5. The other end of the microswitch is connected to the third pin of the bidirectional thyristor Q1. The sixth pin of the optocoupler U4 is connected to the third pin of the bidirectional thyristor Q2. The first pin of the bidirectional thyristor Q1 is connected to the second phase voltage of the three-phase power supply, and its second pin is connected to the second terminal of the motor. The first pin of the bidirectional thyristor Q2 is connected to the third phase voltage of the three-phase power supply, and its second pin is connected to the third terminal of the motor. The yarn storage device is equipped with a yarn storage device socket, which is connected to the three-phase yarn storage device power box connected to the three-phase power supply via a 4-core flat cable.

2. A three-phase yarn storage device according to claim 1, characterized in that, Pin 8 of the microcontroller U2 is connected to the yarn feed alarm signal and the yarn output alarm signal. Pin 1 of the microcontroller U2 is connected to the base of transistor Q3. The emitter of transistor Q3 is connected to one phase voltage of an external three-phase power supply through diode D1. The collector of transistor Q3 outputs a yarn breakage alarm signal to the three-phase yarn storage power supply box through resistor R1. The three-phase yarn storage power supply box then sends the yarn breakage alarm signal to the circular knitting machine.

3. A three-phase yarn storage device according to claim 2, characterized in that, The first pin of the microcontroller U2 is connected to a light-emitting diode and a resistor R2 in sequence, and then connected to a power supply. The light-emitting diode is used for yarn breakage alarm indication.

4. A three-phase yarn storage device according to claim 2, characterized in that, The yarn feed alarm signal is triggered by the yarn feed probe to activate the yarn breakage switch. One end of the yarn breakage switch is grounded, and the other end is connected to pin 8 of the microcontroller U2.

5. A three-phase yarn storage device according to claim 2, characterized in that, The yarn exit alarm signal is generated by the optocoupler U3 of the yarn exit alarm circuit triggered by the swing of the yarn exit probe.

6. A three-phase yarn storage device according to claim 1, characterized in that, The yarn storage socket includes four terminals, three of which are connected to the three phase voltages of the three-phase power supply, and the other terminal is used to connect to the yarn breakage alarm signal of the yarn storage device.

7. A three-phase yarn storage device according to claim 1, characterized in that, The working process of the three-phase yarn storage device includes: S1. Turn on the power to the yarn accumulator; S2. The microcontroller U2 determines whether the yarn storage device is broken. If yes, proceed to S4; otherwise, proceed to step S3. S3. The motor starts working and determines whether the yarn storage device is full of yarn. If not, the motor continues to work. If yes, proceed to step S6. S4. The microcontroller U2 delays and determines whether the yarn storage device is broken. If so, the motor stops working and proceeds to step S5; if not, proceeds to step S3. S5. The microcontroller U2 determines whether the yarn storage device has released the yarn breakage. If yes, proceed to step S3; otherwise, continue to determine whether to release the yarn breakage. S6, the motor stops working.

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