CN210804031U - Stranding machine control device - Google Patents

Abstract

The application discloses a control device of a stranding machine, which comprises a first controller and a second controller which are connected with each other, wherein a host control circuit in the first controller is used for controlling a host driving circuit in the first controller, and the host driving circuit is used for driving a main motor; the drawing and winding controller in the second controller is connected with the power grid and comprises a drawing and winding control circuit, a winding control chip and a drawing and winding control chip, and the winding control chip is used for controlling the drawing and winding control circuit to enable the winding motor to operate; the drawing control chip is used for controlling the drawing and winding control circuit to enable the drawing motor to operate; the winding displacement controller in the second controller is connected with the drawing and taking winding controller and comprises a winding displacement control chip and a winding displacement control circuit, and the winding displacement control chip is used for controlling the winding displacement control circuit so as to enable the winding displacement motor to operate. Through the mode, the control of drawing and the control of rolling can be integrated to this application, improve the integrated level, reduce volume and cost.

Description

Stranding machine control device

Technical Field

The application relates to the technical field of integrated control, in particular to a control device of a stranding machine.

Background

The stranding machine is a stranding mechanical device which can be widely applied to various soft/hard conductor wires, so that a plurality of single conductors are twisted into one strand to meet the process requirements of wires; the stranding machine can be generally classified into a single stranding machine, a pair stranding machine, a high-speed stranding machine, a back stranding machine, a cage stranding machine, a frame stranding machine, a tube stranding machine, a disc stranding machine, and the like according to a stranding method.

In the prior art, a main motor outside a stranding machine is controlled by an independent frequency converter, a lifting motor and an external fan are switched in a forward and reverse mode and controlled to start and stop through a contactor, an isolation transformer, a switching power supply, a relay, an internal brake/external brake adjustable direct current power supply are additionally arranged in the whole system, the system is controlled through a Programmable Logic Controller (PLC), and the stranding machine has multiple types of devices, is complex in wiring and occupies a large space; every motor all needs a converter to control, and because the integrated level is lower, the relation of connection between PLC and converter, motor and other relevant parts that correspond is relatively more complicated, and the assembly degree of difficulty is great, needs the professional to assemble. The internal flat cable adopts mechanical flat cables, the row spacing can be adjusted only by replacing mechanical parts during shutdown, the online shutdown-free adjustment function cannot be realized, and the production efficiency is influenced; and the drawing and the winding are realized mechanically, the drawing disc needs to be replaced when the pitch is changed, the operation is complex, the winding adopts a magnetic powder clutch brake, and the magnetic powder clutch brake is expensive and poor in reliability. In addition, because of the adoption of the universal frequency converter, the system has more redundancy, the optimal cost cannot be realized, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

The problem that this application mainly solved provides a stranding machine controlling means, can integrate the control of drawing the control of getting and the control of rolling, improves the integrated level, reduces volume and cost.

In order to solve the technical problem, the technical scheme adopted by the application is as follows: the utility model provides a stranding machine controlling means, this stranding machine controlling means includes at least: the first controller comprises a host control circuit and a host driving circuit, the host control circuit is used for controlling the host driving circuit, and the host driving circuit is used for driving the main motor; the second controller comprises a drawing and winding controller and a winding displacement controller, the drawing and winding controller is connected with a power grid and comprises a drawing and winding control circuit, a winding control chip and a drawing control chip, the winding control chip and the drawing control chip are connected with the drawing and winding control circuit, and the winding control chip is used for controlling the drawing and winding control circuit to enable a winding motor connected with the drawing and winding control circuit to operate; the drawing control chip is used for controlling the drawing and winding control circuit to enable a drawing motor connected with the drawing and winding control circuit to operate; the winding displacement controller is connected with the drawing and winding controller and comprises a winding displacement control chip and a winding displacement control circuit which are mutually connected, wherein the winding displacement control chip is used for controlling the winding displacement control circuit, so that a winding displacement motor connected with the winding displacement control circuit operates.

Through the scheme, the beneficial effects of the application are that: the control device of the stranding machine comprises a first controller and a second controller, wherein the drawing and taking winding controller in the second controller can control the drawing and taking motor and the winding motor to normally operate, the flat cable motor can be controlled by the flat cable controller to normally operate, the drawing and taking winding controller integrates the drawing and taking control and the winding control, the drawing and taking control chip, the winding control chip and the drawing and taking winding control circuit are included, the drawing and taking control chip and the winding control chip respectively control the drawing and taking motor and the winding motor by controlling the drawing and taking winding control circuit, and the winding circuit and the drawing circuit are integrated, so that the integration level is improved, the size of the circuit board can be reduced, and the production cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

fig. 1 is a schematic structural diagram of an embodiment of a control device of a wire twisting machine provided by the present application;

fig. 2 is a schematic structural diagram of a drawing control chip and a winding control chip provided in the present application;

FIG. 3 is a schematic diagram of a bus control chip provided in the present application;

fig. 4 is a schematic structural diagram of another embodiment of a stranding machine control device provided by the present application;

FIG. 5 is a schematic diagram of the structure of the host control circuit in the embodiment shown in FIG. 4;

FIG. 6 is a schematic diagram of the structure of the host driver circuit in the embodiment shown in FIG. 4;

FIG. 7 is a schematic structural diagram of a pickup winding control circuit in the embodiment shown in FIG. 4;

FIG. 8 is a schematic diagram of the flat cable control circuit shown in FIG. 4;

fig. 9 is a schematic structural diagram of the first controller, the second controller, the main motor, the withdrawing motor, the winding motor and the winding displacement motor in the embodiment shown in fig. 4.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a control device of a wire twisting machine provided in the present application, the control device of the wire twisting machine at least includes: a first controller 10 and a second controller 20.

The first controller 10 includes a host control circuit 11 and a host drive circuit 12, the host control circuit 11 is used for controlling the host drive circuit 12, and the host drive circuit 12 is used for driving the main motor 30; the first controller 10 and the second controller 20 can be an external controller and an internal controller, respectively, and the main motor 30 can be an alternating current asynchronous motor, and is connected with a mechanical part (not shown) through a belt pulley to drive the winch bow (not shown) to rotate at a high speed.

The second controller 20 is connected to the first controller 10, and the second controller 20 includes a take-up controller 21 and a winding displacement controller 22.

The drawing and taking winding controller 21 is connected with the power grid 40, and the drawing and taking winding controller 21 comprises a drawing and taking winding control circuit 211, a drawing and taking control chip 212 and a winding control chip 213 which are connected with the drawing and taking winding control circuit 211; the drawing and winding controller 21 integrates drawing control and winding control, and synthesizes a drawing and winding control circuit 211.

The power grid 40 has a plurality of output lines, specifically, the power grid 40 has a zero line N, a phase line (live line) R of a first phase, a phase line S of a second phase, and a phase line T of a third phase; the input end of the pick-up winding control circuit 211 is connected to the phase line T and the zero line N of the third phase of the power grid 40.

The drawing control chip 212 is used for controlling the drawing winding control circuit 211 so that the drawing motor 50 connected with the drawing winding control circuit 211 operates; the winding control chip 213 is used for controlling the drawing and winding control circuit 211 so that the winding motor 60 connected with the drawing and winding control circuit 211 operates; specifically, the output end of the drawing and winding control circuit 211 is connected to the input end of the drawing motor 50 and the input end of the winding motor 60, respectively, and the drawing and winding control circuit 211 can provide electric signals for the drawing motor 50 and the winding motor 60 to enable the drawing motor 50 and the winding motor 60 to operate normally.

The flat cable controller 22 is connected to the retrieving and winding controller 21, the flat cable controller 22 includes a flat cable control circuit 221 and a flat cable control chip 222, the output terminal of the flat cable control circuit 221 is connected to the input terminal of the flat cable motor 70, the flat cable control chip 222 is used for controlling the flat cable control circuit 221, so that the flat cable motor 70 connected to the flat cable control circuit 221 operates, the flat cable control circuit 221 can provide an electrical signal for the flat cable motor 70 to operate normally, and the flat cable motor 70 can be a stepping motor.

The drawing control chip 212, the winding control chip 213, and the bus control chip 222 may be digital signal processors, for example, a chip TMS320F28034, the chip TMS320F28034 may have an IO (Input/Output) interface and a CAN interface (Controller Area Network), the drawing control chip 212 and the winding control chip 213 may be as shown in fig. 2, the bus control chip 222 may be as shown in fig. 3, a reset circuit, a crystal oscillator, and a memory (not shown) are respectively connected to the chip TMS320F28034, the reset circuit and the crystal oscillator are respectively used for resetting the chip TMS320F28034 and providing an oscillation signal, the memory may be used for storing data sent by the chip TMS320F28034, and the memory may be an Electrically Erasable Programmable read only memory (eprom).

The first controller 10 and the second controller 20 can communicate with each other in a wireless communication manner, so that data interaction is realized; specifically, the flat cable control chip 222 may communicate with the host control circuit 11 through the ZigBee network; the pick-up control chip 212, the winding control chip 213 and the bus control chip 222 CAN communicate with each other through a CAN bus.

The embodiment provides a control device of a stranding machine, which comprises a first controller 10 and a second controller 20, wherein the first controller comprises a host driving circuit 12 for driving a main motor 30 to normally work and a host control circuit 11 for driving the host driving circuit 12, the second controller 20 comprises a drawing and winding controller 21 for controlling a drawing motor 50 and a winding motor 60 to normally work and a flat cable controller 22 for controlling a flat cable motor 70 to normally work, the drawing and winding controller 21 integrates drawing control and winding control, and comprises a drawing and winding control circuit 211, a drawing and winding control chip 212 and a winding control chip 213, the drawing and winding control chip 212 and the winding control chip 213 respectively control the drawing motor 50 and the winding motor 60 by controlling the drawing and winding control circuit 211, and as the winding circuit and the drawing circuit are integrated, the integration level is improved, the volume of the circuit board can be reduced, and the production cost is reduced.

Referring to fig. 4 to 9, fig. 4 is a schematic structural diagram of another embodiment of a stranding machine control device provided in the present application, the stranding machine control device at least includes: a first controller 10 and a second controller 20.

The host control circuit 11 is configured to receive an operation instruction sent by a Human Machine Interface (HMI) (not identified in the figure), and control the host driving circuit 12 according to the operation instruction; specifically, the HMI may display information and set parameters, and as shown in fig. 5, the host control circuit 11 and the HMI may communicate with each other through an RS485 bus.

The host control circuit 11 at least includes a host control chip 111 and a plurality of signal conditioning circuits 112 connected to each other, the host control chip 111 is configured to output a control signal to control the first switch circuit 122, the second switch circuit 123, the first voltage-dropping circuit 125, and the second voltage-dropping circuit 126; the signal conditioning circuit 112 is configured to receive a detection signal sent by an external device (not shown), process the detection signal, and transmit the processed detection signal to the host control chip 111.

The first controller 10 integrates the functions of controlling the main motor 30, controlling the ascending/descending of the tray, controlling the inner brake, controlling the outer brake, controlling the fan, wireless communication, multi-path digital input, digital output, analog input, temperature detection and the like; specifically, as shown in fig. 5, the host control chip 111 includes a plurality of digital input ports DI1-D13 and a plurality of digital output ports DO1-DO6, the external device includes a sensor, and the detection signal includes a tray up signal, a tray down signal, an up gate limit signal, a tray limit signal, a 630 tray limit signal, an emergency stop signal, an internal wire break signal, an external wire break signal, an oil filling detection signal, an oil level fault signal, a start signal, a stop signal, a jog signal, or a temperature detection signal; the host control chip 111 may output 6 channels of PWM (Pulse Width Modulation) signals and enable signals EN to a buffer (not shown), and the buffer outputs IGBT driving signals to the host driving circuit 12 to turn on an IGBT (Insulated Gate Bipolar Transistor) in the host driving circuit 12 (not shown in the figure); the host control chip 111 may also receive a current signal to detect whether the current meets a standard; the host control chip 111 may also receive an incremental encoder detection signal to detect the speed of the host motor 30.

The host drive circuit 12 includes: the frequency conversion circuit 121, the first switch circuit 122, the second switch circuit 123, the switching power supply 124, the first voltage reduction circuit 125, and the second voltage reduction circuit 126.

The frequency conversion circuit 121 is connected to the power grid 40, and the frequency conversion circuit 121 is configured to receive a first power signal output by the power grid 40, process the first power signal, and output a first ac signal to the main motor 30.

In a specific embodiment, as shown in fig. 4, the frequency converter circuit 121 includes: a first rectification circuit 1211, a first filter circuit 1212, and a first inverter circuit 1213.

A first rectifying circuit 1211 connected to the power grid 40, for rectifying the first power signal and outputting a first direct current signal; specifically, referring to fig. 4 and 6 in combination, the input end of the first rectification circuit 1211 is connected to the phase line R of the first phase, the phase line S of the second phase and the phase line T of the third phase of the power grid 40, respectively, and the first rectification circuit 1211 may be a rectification bridge composed of six diodes D1-D6; the anode of diode D1 and the cathode of diode D2 are both connected to phase line R of the first phase of grid 40, the anode of diode D3 and the cathode of diode D4 are both connected to phase line S of the second phase of grid 40, and the anode of diode D5 and the cathode of diode D6 are both connected to phase line T of the third phase of grid 40.

A switch (not shown) may be further disposed between the power grid 40 and the first rectification circuit 1211, and the switch may be an air switch, and the phase line R of the first phase, the phase line S of the second phase, and the phase line T of the third phase are respectively connected to three input terminals of the first rectification circuit 1211 through the air switch.

The first filtering circuit 1212 is connected to the first rectifying circuit 1211, and is configured to filter the first dc signal; specifically, as shown in fig. 6, the first filter circuit 1212 may be a resistance-capacitance filter network composed of a resistor R1, a resistor R2, a capacitor C1, and a switch S1, so as to filter an ac signal in the first dc signal output by the first rectifier circuit 1211 and reduce signal interference.

The first inverter circuit 1213 is connected to the first filter circuit 1212, and is configured to invert the filtered first dc signal to generate a first ac signal; specifically, referring to fig. 4 and fig. 6 in combination, the input end of the first inverter circuit 1213 is connected to the output end of the first filter circuit 1212, and three output ends of the first inverter circuit 1213 are connected to the extraction motor 50; the first inverter circuit 1213 includes a plurality of transistors T1-T6 and a plurality of diodes D7-D12; the transistors T1-T6 may be IGBT transistors, and the diodes D7-D12 may protect the transistors T1-T6 from breakdown when sudden changes in current or voltage occur in the circuit.

The control end of the transistor T1-T6 in the first inverter circuit 1213 is connected to the output end of the host control chip 111, and is configured to receive the control signal output by the host control chip 111; specifically, the control terminal is a gate of an IGBT, when the host control chip 111 outputs a high level, the voltage between the gate and the emitter of the transistors T1-T6 is greater than the self-turn-on voltage, the transistors T1-T6 are turned on, and the diodes D7-D12 are in a non-conductive state; when the host control chip 111 outputs a low level, the voltage between the gate and the emitter of the transistors T1-T6 is less than the self-turn-on voltage, and the transistors T1-T6 are in the off state.

The first switch circuit 122 is connected to the power grid 40, and the first switch circuit 122 is configured to receive a first power signal output by the power grid 40 and output a signal to the lift motor 80, so that the lift motor 80 rotates forward or backward; the second switch circuit 123 is connected to the power grid 40, and the second switch circuit 123 is configured to receive the first power signal output by the power grid 40 and output a signal to the external fan 90, so as to operate the external fan 90. Specifically, referring to fig. 4 and 6, an input end of the first switch circuit 122 and an input end of the second switch circuit 123 are respectively connected to a phase line R of a first phase, a phase line S of a second phase, and a phase line T of a third phase of the power grid 40, the first switch circuit 122 includes two sub-switch circuits 1221, the sub-switch circuits 1221 and the second switch circuit 123 may be relays or contactors, and the first switch circuit 122 and the second switch circuit 123 are further connected to the main control chip 111, and when receiving a control signal output by the main control chip 111, a switch (not identified in the figure) in the circuits is closed, and transmits a first power signal to the lift motor 80 and the external fan 90, respectively, so that the lift motor 80 and the external fan 90 operate.

The switching power supply 124 is connected to the first rectification circuit 1211, and configured to receive the first dc signal, and step down the first dc signal to generate a second dc signal; specifically, the voltage of the second dc signal may be 48V.

The first voltage-reducing circuit 125 is connected to the switching power supply 124, and is configured to reduce the voltage of the second dc signal to generate a third dc signal, so as to drive a first internal brake device (not shown in the figure), where the first internal brake device is configured to control the wire-rewinding mechanical component (not shown in the figure) to stop rotating; specifically, the first voltage reducing circuit 125 may output a signal to the wire take-up mechanical component through an internal brake interface (not identified in the figure) in the host driving circuit 12, so that the wire take-up mechanical component is quickly stopped after being stopped.

The second voltage reduction circuit 126 is connected to the switching power supply 124, and is configured to reduce the voltage of the second dc signal to generate a fourth dc signal, so as to drive an external brake circuit (not shown in the figure), where the external brake circuit is configured to control a stranded wire mechanical component (not shown in the figure) to stop rotating; specifically, the second voltage-reducing circuit 126 may output a signal to the wire twisting mechanical component through an external brake interface (not identified in the figure) in the host driving circuit 12, so that the wire twisting mechanical component is quickly stopped after being stopped.

The drawing control chip 212 is used for adjusting the pitch on line after receiving the first adjusting instruction; specifically, after receiving the instruction for adjusting the pitch input by the user, the picking control chip 212 may control the picking motor 50 to implement stepless speed regulation, implement automatic pitch adjustment on line without shutdown, and avoid manual replacement of the picking disc (not shown in the figure), so that the control precision is high.

The drawing and winding control circuit 211 is configured to receive a second power signal output by the power grid 40, process the second power signal, and output a second ac signal and a third ac signal to the drawing motor 50 and the winding motor 60, respectively, where the winding motor 60 may be an asynchronous motor.

Further, the pickup winding control circuit 211 includes: a second rectification circuit 2111, a second filter circuit 2112, a second inverter circuit 2113, and a third inverter circuit 2114.

The second rectification circuit 2111 is configured to rectify the second power supply signal and output a fifth direct current signal; specifically, referring to fig. 4 and 7 in combination, the input end of the second rectification circuit 2111 is connected to the phase line T and the neutral line N of the third phase of the power grid 40, respectively, and the second rectification circuit 2111 may be a rectification bridge composed of four diodes D13-D16.

The second filter circuit 2112 is connected to the second rectifier circuit 2111, and is configured to filter the fifth direct current signal; specifically, as shown in fig. 7, the filter circuit may be a rc filter network composed of a resistor R3, a resistor R4, a capacitor C2 and a switch S2, so as to filter an ac signal in the first dc signal output by the first rectifier circuit 1211 and reduce signal interference.

The second inverter circuit 2113 is connected to the second filter circuit 2112, and is configured to invert the filtered fifth dc signal to generate a second ac signal; specifically, referring to fig. 4 and 7, an input terminal of the second inverter circuit 2113 is connected to an output terminal of the second filter circuit 2112, and three output terminals of the second inverter circuit 2113 are connected to an input terminal of the extraction motor 50.

The third inverter circuit 2114 is connected to the second filter circuit 2112, and is configured to invert the filtered fifth dc signal to generate a third ac signal; specifically, referring to fig. 4 and 7, the input end of the third inverter circuit 2114 is connected to the output end of the second filter circuit 2112, and three output ends of the third inverter circuit 2114 are connected to the input end of the winding motor 60.

With continued reference to FIG. 7, the second inverter circuit 2113 includes a plurality of transistors T7-T12 and a plurality of diodes D17-D22, and the third inverter circuit 2114 includes a plurality of transistors T13-T18 and a plurality of diodes D23-D28; the transistors T7-T18 may be IGBT transistors, and the diodes D17-D28 may protect the transistors T7-T18 from breakdown when sudden changes in current or voltage occur in the circuit.

The control end of the transistor T7-T12 in the second inverter circuit 2113 is connected to the output end of the drawing control chip 212, and is configured to receive the control signal output by the drawing control chip 212; specifically, the control terminal is a gate of an IGBT, when the control chip 212 is led to output a high level, the voltage between the gate and the emitter of the transistors T7-T12 is greater than the self-turn-on voltage, the transistors T7-T12 are turned on, and the diodes D17-D22 are in a non-conductive state; when the pull-up control chip 212 outputs a low level, the voltage between the gate and the emitter of the transistors T7-T12 is less than the self-turn-on voltage, and the transistors T7-T12 are in the turn-off state.

The control end of the transistor T13-T18 in the third inverter circuit 2114 is connected to the output end of the winding control chip 213, and is configured to receive the control signal output by the winding control chip 213 in the winding controller 21; specifically, when the winding control chip 213 outputs a high level, the transistors T13-T18 are turned on, and the diodes D23-D28 are in a non-conductive state; when the winding control chip 213 outputs a low level, the transistors T13-T18 are in an off state.

With continued reference to fig. 4, the bus line control circuit 221 includes: a bus line driving circuit 2211, a third step-down circuit 2212, and a fourth step-down circuit 2213.

The flat cable driving circuit 2211 is connected to the switching power supply 124, and is configured to receive the second dc signal and drive the flat cable motor 70 to operate; specifically, as shown in fig. 8, the flat cable driving circuit 2211 includes transistors T19-T26 and diodes D29-D36, and the transistors T19-T26 may be IGBT tubes, and the gate of each IGBT tube is connected to the output terminal of the flat cable control chip 222.

The third voltage-reducing circuit 2212 is connected to the switching power supply 124, and is configured to reduce the voltage of the second dc signal to generate a sixth dc signal to drive the second internal brake device 100, where the second internal brake device 100 is configured to control the winding displacement mechanical component (not shown in the figure) to stop rotating; specifically, the third voltage-reducing circuit 2212 can output a signal to the wire-rewinding mechanical component through an internal brake interface (not identified in the figure) in the flat cable controller 22, so that the wire-rewinding mechanical component can be quickly stopped after being stopped.

In other embodiments, when the electronic winding is not used, the fourth voltage-reducing circuit 2213 is connected to the switching power supply 124, and is configured to reduce the voltage of the second dc signal to generate a seventh dc signal, so as to drive the magnetic-particle brake 110, where the magnetic-particle brake 110 is configured to control the winding motor 60 to operate; specifically, the fourth voltage-reducing circuit 2213 may be connected to the magnetic-particle brake 110 through a magnetic-particle brake interface (not shown) in the flat cable controller 22, and the flat cable control chip 222 may control the winding motor 60 by controlling the magnetic-particle brake 110, so that the speed of the winding motor 60 may be changed according to the output of the flat cable control chip 222.

Further, the flat cable control chip 222 is connected to the flat cable driving circuit 2211, the third voltage dropping circuit 2212 and the fourth voltage dropping circuit 2213, respectively, and the flat cable control chip 222 is configured to control the flat cable driving circuit 2211, the third voltage dropping circuit 2212 and the fourth voltage dropping circuit 2213, and adjust the row pitch on line after receiving the second adjustment instruction; specifically, the wire arrangement control chip 222 automatically adjusts the wire arrangement pitch after receiving a command for adjusting the wire arrangement pitch input by a user, without stopping the machine to adjust the mechanical structure.

In a specific embodiment, as shown in fig. 8, the third voltage-reducing circuit 2212 and the fourth voltage-reducing circuit 2213 are BUCK circuits (voltage-increasing voltage-reducing circuits), the voltage-increasing voltage-reducing circuits can be used as control circuits for the external second internal brake device 100 and the external magnetic powder brake 110, and signals output by the voltage-increasing voltage-reducing circuits can be used as low-voltage adjustable dc power supplies.

The step-up voltage reduction circuit comprises a transistor T, a diode D, an inductor L, a resistor R and a capacitor C, wherein the diode D comprises a first end and a second end, and the first end of the diode D is connected with a first output end of the switching power supply 124; the transistor T includes a control end, a first end and a second end, the control end of the transistor T is connected with the bus control chip 222, the control end of the transistor T is used for receiving the control signal output by the bus control chip 222, the first end of the transistor T is connected with the second end of the diode D, the second end of the transistor T is connected with the second output end of the switching power supply 124, and the control end, the first end and the second end of the transistor T are respectively a gate, a collector and an emitter; the inductor L comprises a first end and a second end, and the first end of the inductor L is connected with the second end of the diode D; the resistor R comprises a first end and a second end, the first end of the resistor R is connected with the second end of the inductor L, and the second end of the resistor R is connected with the first end of the diode D; the capacitor C comprises a first end and a second end, the first end and the second end of the capacitor C are respectively connected with the first end and the second end of the resistor R, and the first end and the second end of the capacitor C are respectively a negative electrode and a positive electrode.

When the transistor T is conducted, the input voltage of the boost voltage reduction circuit is equal to the output voltage of the boost voltage reduction circuit; when the transistor T is not turned on, the input voltage of the step-up/step-down circuit is less than the output voltage of the step-up/step-down circuit.

The first voltage-reducing circuit 125 and the second voltage-reducing circuit 126 are also voltage-increasing voltage-reducing circuits, and the specific structure and operation principle thereof are the same as those of the voltage-increasing voltage-reducing circuits, and are not described herein again.

Referring to fig. 4 and 9, the control device of the wire twisting machine can output control signals to the main motor 30, the drawing motor 50, the winding motor 60 and the wire arranging motor 70 respectively.

The host control chip 111, the first encoder (not shown in the figure) and the main motor 30 form a closed loop, the first encoder can measure the speed of the main motor 30 and feed the speed of the main motor 30 back to the host control chip 111, and the host control chip 111 outputs a signal to control the speed of the main motor 30 according to the speed fed back by the first encoder, so that the speed of the main motor 30 is adjusted in a closed loop.

After receiving a first adjustment instruction input by a user, the picking control chip 212 outputs a control signal to the picking motor 50 to change the rotating speed of the picking motor 50, so as to realize automatic adjustment of the pitch; the drawing control chip 212, a second encoder (not shown) and the drawing motor 50 form a closed loop, the second encoder can measure the speed of the drawing motor 50 and feed the speed of the drawing motor 50 back to the drawing control chip 212, and the drawing control chip 212 outputs a signal to control the speed of the drawing motor 50 according to the speed fed back by the second encoder, so that the speed of the drawing motor 50 is adjusted in a closed loop.

The winding displacement control chip 222, a third encoder (not shown) and the winding displacement motor 70 form a closed loop, the third encoder can measure the speed of the winding displacement motor 70 and feed the speed of the winding displacement motor 70 back to the winding displacement control chip 222, and the winding displacement control chip 222 outputs a signal to control the speed of the winding displacement motor 70 according to the speed fed back by the third encoder, so that the speed of the winding displacement motor 70 is adjusted in a closed loop; the encoders (including the first encoder, the second encoder, and the third encoder) may be differential incremental encoders.

The leading motor 50 can drive a leading wheel (not marked in the figure) to rotate, the leading wheel is connected with a wire arranging wheel (not marked in the figure) through a belt, the wire arranging wheel is connected with a winding wheel (not marked in the figure) through the belt, and a product (not shown in the figure) reaches the winding wheel to be wound after leading and arranging wires.

In the control device of the wire twisting machine in the embodiment, the main motor 30, the tray ascending/descending, the external fan 90 and the low-voltage direct-current power supply are integrated on one PCB (Printed Circuit Board), so that the process logic control of the wire twisting machine is integrated, and the expensive PLC in the prior art can be replaced; the second controller 20 integrates the functions of the winding displacement motor 70, the winding motor 60, the winding displacement motor 70, the internal brake, the magnetic powder brake, the digital input/output and the like; the wire arranging component is adjusted to be a stepping motor and a wire arranging control circuit 221, and replaces the traditional mechanical wire arranging by an electronic wire arranging component, so that the wire arranging distance can be randomly adjusted on line without stopping the machine, and the wire arranging form can also be changed; the winding part uses an asynchronous motor and a leading winding control circuit 211 to replace an expensive magnetic powder brake 110, so that fault points are eliminated, the service life of the whole stranding machine can be prolonged, and the cost of the whole stranding machine can be reduced; the electronic drawing is used for replacing the traditional mechanical drawing, the drawing disc only needs one specification, and the pitch can be adjusted on line without stopping.

The stranding machine control device is low in cost, complete in function, small in size and high in power density, the cost of a cabinet body, a PLC (programmable logic controller), a contactor, a wire harness and other devices is saved, power and logic control can be designed according to actual requirements of equipment, and redundancy is avoided; the special technological parameters of the stranding machine can be set through software, the field debugging workload is small, the full electrification of the stranding machine control can be realized, the integration level is high, and the assembly is simple.

The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.

Claims (10)

1. A stranding machine control apparatus, characterized by comprising at least:

a first controller including a host control circuit for controlling the host driving circuit and a host driving circuit for driving a main motor;

the second controller is connected with the first controller and comprises a drawing and winding controller and a flat cable controller, the drawing and winding controller is connected with a power grid and comprises a drawing and winding control circuit, a winding control chip and a drawing and winding control chip, the winding control chip is connected with the drawing and winding control circuit and is used for controlling the drawing and winding control circuit, and a winding motor connected with the drawing and winding control circuit operates; the drawing control chip is used for controlling the drawing and winding control circuit to enable a drawing motor connected with the drawing and winding control circuit to operate; the winding displacement controller is connected with the drawing and winding controller and comprises a winding displacement control chip and a winding displacement control circuit which are connected with each other, and the winding displacement control chip is used for controlling the winding displacement control circuit so that a winding displacement motor connected with the winding displacement control circuit operates.

2. The stranding machine control apparatus of claim 1 wherein the host drive circuit includes:

the frequency conversion circuit is connected with the power grid and used for receiving a first power supply signal output by the power grid, processing the first power supply signal and outputting a first alternating current signal to the main motor;

the first switch circuit is connected with the power grid and used for receiving a first power supply signal output by the power grid and outputting a signal to the lifting motor so as to enable the lifting motor to rotate forwards or backwards;

and the second switching circuit is connected with the power grid and used for receiving the first power supply signal output by the power grid and outputting a signal to the external fan so as to enable the external fan to operate.

3. The stranding machine control apparatus of claim 2 wherein the frequency conversion circuit includes:

the first rectifying circuit is used for rectifying the first power supply signal and outputting a first direct current signal;

the first filtering circuit is connected with the first rectifying circuit and is used for filtering the first direct current signal;

and the first inverter circuit is connected with the first filter circuit and is used for inverting the filtered first direct current signal to generate the first alternating current signal.

4. The strand machine control device of claim 3, wherein the host drive circuit further comprises:

the switching power supply is connected with the first rectifying circuit and used for receiving the first direct current signal and reducing the voltage of the first direct current signal to generate a second direct current signal;

the first voltage reduction circuit is connected with the switching power supply and used for reducing the voltage of the second direct current signal to generate a third direct current signal so as to drive a first internal brake device, and the first internal brake device is used for controlling the wire take-up mechanical part to stop rotating;

and the second voltage reduction circuit is connected with the switching power supply and used for reducing the voltage of the second direct current signal to generate a fourth direct current signal so as to drive the external brake circuit, and the external brake circuit is used for controlling the stranded wire mechanical part to stop rotating.

5. The strand machine control device according to claim 4,

the host control circuit is also used for receiving an operation instruction sent by a human-computer interface and controlling the host driving circuit according to the operation instruction; the host control circuit at least comprises a host control chip and a signal conditioning circuit which are connected with each other, wherein the host control chip is used for outputting control signals so as to control the first switch circuit, the second switch circuit, the first voltage reduction circuit and the second voltage reduction circuit; the signal conditioning circuit is used for receiving a detection signal sent by external equipment, processing the detection signal and transmitting the processed detection signal to the host control chip.

6. The strand machine control device of claim 5,

the external equipment comprises a sensor, and the detection signal comprises a tray rising signal, a tray falling signal, an upper door limit signal, a supporting plate limit signal, a 630 tray limit signal, an emergency stop signal, an internal disconnection signal, an external disconnection signal, an oiling detection signal, an oil level fault signal, a starting signal, a stopping signal, a inching signal or a temperature detection signal.

7. The strand machine control device according to claim 4,

the drawing and winding control circuit is used for receiving a second power supply signal output by the power grid, processing the second power supply signal and respectively outputting a second alternating current signal and a third alternating current signal to the drawing motor and the winding motor; the drawing control chip is also used for adjusting the pitch on line after receiving the first adjusting instruction.

8. The strand machine control device of claim 7, wherein the take-up reel control circuit comprises:

the second rectifying circuit is used for rectifying the second power supply signal and outputting a fifth direct current signal;

the second filter circuit is connected with the second rectifying circuit and is used for filtering the fifth direct-current signal;

the second inverter circuit is connected with the second filter circuit and is used for inverting the filtered fifth direct-current signal to generate a second alternating-current signal;

and the third inverter circuit is connected with the second filter circuit and is used for inverting the filtered fifth direct current signal to generate the third alternating current signal.

9. The strand machine control device of claim 8, wherein the traverse control circuit comprises:

the flat cable driving circuit is connected with the switching power supply and used for receiving the second direct current signal and driving the flat cable motor to operate;

the third voltage reduction circuit is connected with the switching power supply and used for reducing the voltage of the second direct current signal to generate a sixth direct current signal so as to drive a second internal brake device, and the second internal brake device is used for controlling the wire arranging mechanical part to stop rotating;

the fourth voltage reduction circuit is connected with the switching power supply and is used for reducing the voltage of the second direct current signal to generate a seventh direct current signal so as to drive a magnetic powder brake, and the magnetic powder brake is used for controlling the winding motor to operate;

the flat cable control chip is respectively connected with the flat cable driving circuit, the third voltage reduction circuit and the fourth voltage reduction circuit, and is used for controlling the flat cable driving circuit, the third voltage reduction circuit and the fourth voltage reduction circuit and adjusting the row spacing on line after receiving a second adjustment instruction.

10. Strander control device according to claim 9,

the third buck circuit and the fourth buck circuit are boost buck circuits, and the boost buck circuits include:

the diode comprises a first end and a second end, and the first end of the diode is connected with the first output end of the switching power supply;

the transistor comprises a control end, a first end and a second end, wherein the control end of the transistor is connected with the flat cable control chip and used for receiving a control signal output by the flat cable control chip, the first end of the transistor is connected with the second end of the diode, and the second end of the transistor is connected with the second output end of the switching power supply;

an inductor comprising a first terminal and a second terminal, the first terminal of the inductor being connected to the second terminal of the diode;

the resistor comprises a first end and a second end, the first end of the resistor is connected with the second end of the inductor, and the second end of the resistor is connected with the first end of the diode;

the capacitor comprises a first end and a second end, and the first end and the second end of the capacitor are respectively connected with the first end and the second end of the resistor;

when the transistor is conducted, the input voltage of the boost type voltage reduction circuit is equal to the output voltage of the boost type voltage reduction circuit; when the transistor is not conducted, the input voltage of the boost type voltage reduction circuit is smaller than the output voltage of the boost type voltage reduction circuit.

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