CN215734084U - Blank taking manipulator control circuit for high-pressure forming machine - Google Patents
Blank taking manipulator control circuit for high-pressure forming machine Download PDFInfo
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- CN215734084U CN215734084U CN202121398643.8U CN202121398643U CN215734084U CN 215734084 U CN215734084 U CN 215734084U CN 202121398643 U CN202121398643 U CN 202121398643U CN 215734084 U CN215734084 U CN 215734084U
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Abstract
The utility model belongs to the technical field of manipulator control, and comprises a PLC (programmable logic controller), a motor driver, an overcurrent protection circuit and a high-temperature protection circuit, wherein the PLC is used for providing a corresponding control signal for the motor driver and is connected with the input end of the motor driver, the output end of the motor driver is connected with the motor, and the motor is used as an electric execution element of a manipulator. The current protection circuit is used for detecting the current output by the motor driver, the high-temperature protection circuit is used for detecting the working temperature of the motor, the current and the working temperature of the motor are monitored in real time, and when the current and the working temperature exceed a set value, the current and the working temperature are fed back to the PLC, so that the working state of the high-pressure forming machine is further guaranteed.
Description
Technical Field
The utility model belongs to the technical field of manipulator control, and relates to a blank taking manipulator control circuit for a high-pressure forming machine.
Background
In the production process of the high-pressure forming machine, most of the high-pressure forming machines are in a circulating working state, blanks are manually placed into the high-pressure forming machine, and after the high-pressure forming machine is processed, the processed products are manually taken out for the next round of processing. The labor cost is huge, the continuous high concentration is difficult to guarantee by manpower, the untimely taking and placing are easily caused, and the working efficiency of the high-pressure forming machine is reduced.
A robot is an automatic handling device that grasps, carries objects or operates tools according to a fixed program. The manipulator is the earliest occurring industrial robot and the earliest occurring modern robot, and can imitate certain motion functions of human hands and arms, so that the manipulator can replace the heavy labor of human to realize the mechanization and automation of production.
The manipulator is applied to the high-pressure forming machine to replace manual labor, and has a good promotion effect on the production of the high-pressure forming machine.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model designs the blank taking manipulator control circuit for the high-pressure forming machine, the manipulator is operated to carry out blank taking operation on the high-pressure forming machine, the operation is convenient and fast, and the working efficiency is greatly improved.
The technical scheme adopted by the utility model is that,
blank taking manipulator control circuit for high-pressure forming machine, including PLC controller, motor driver, overcurrent protection circuit and high temperature protection circuit, the PLC controller is used for giving the corresponding control signal of motor driver, connects motor driver's input, motor driver's output is connected the motor, the motor is as the electronic executive component of manipulator, current protection circuit is used for detecting the electric current of motor driver output, current protection circuit's output is connected the PLC controller, high temperature protection circuit is used for detecting the operating temperature of motor, high temperature protection circuit's output is connected the PLC controller.
Further, a voltage conversion circuit is connected between the PLC and the motor driver and comprises a photoelectric coupler U2 and a CMOS device U1, the input end of the photoelectric coupler U2 is connected with a control signal of the PLC after being connected with a resistor R1 in series, the output end of the photoelectric coupler U2 is connected with the output end of the CMOS device U1, and the output end of the CMOS device U1 is connected with a voltage driver.
Further, the overcurrent protection circuit comprises resistors R3, R4, R5 and an operational amplifier U3, the resistors R3, R4 and R5 are connected between GND1 and GND2 in parallel, GND2 is the common ground of the motor drive circuit, GND1 is the common ground except the motor drive circuit, the reverse-phase input end of the operational amplifier U3 is connected behind a GND1 series resistor R7, the reverse-phase input end of the operational amplifier U3 is connected with a reference voltage VERF, the non-phase input end of the operational amplifier U3 is connected behind a GND series resistor R6, and the output end of the operational amplifier U3 is connected with a PLC controller.
Further, the high-temperature protection circuit comprises resistors R8-R14, thermistors RT1 and RT2, an operational amplifier U4 and a triode Q1, wherein the resistors R8, R9, the thermistors RT1 and RT2 are in bridge connection, the connection point of the thermistors RT1 and R9 is connected with the homodromous input end of the operational amplifier U4 through the resistor R10, the connection point of the thermistors RT2 and R8 is connected with the inverting input end of the operational amplifier U4 through the resistor R11, the inverting input end and the output end of the operational amplifier U4 are connected through a resistor R12, the output end of the operational amplifier U4 is connected with the base of the triode Q1 through the resistor R13, and the emitter of the triode Q1 is used as the output end of the high-temperature protection circuit and is connected with the PLC.
The working principle and the beneficial effects of the utility model are as follows:
the PLC outputs signals to the motor driving circuit, and the motor driving circuit controls the motor, so that the control of the manipulator is realized, the manual labor is replaced, the precision is high, the fault tolerance rate is low, and the production efficiency of the high-pressure forming machine is improved. The overcurrent protection circuit and the high-temperature protection circuit are additionally arranged, the current and the working temperature of the motor driver and the motor are monitored in real time, and when the current and the working temperature exceed a set value, the current and the working temperature are fed back to the PLC, so that measures can be taken conveniently.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a circuit diagram of a voltage conversion circuit of the present invention;
FIG. 3 is a circuit diagram of the over-current protection circuit of the present invention;
fig. 4 is a circuit diagram of the high temperature protection circuit of the present invention.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to specific examples and drawings, but the scope and implementation of the present invention are not limited thereto.
In a specific embodiment, as shown in figure 1,
the utility model relates to a blank taking manipulator control circuit for a high-pressure forming machine, which comprises a PLC (programmable logic controller), a motor driver, an overcurrent protection circuit and a high-temperature protection circuit, wherein the PLC is used for providing a corresponding control signal for the motor driver and is connected with the input end of the motor driver, the output end of the motor driver is connected with the motor, the motor is used as an electric execution element of the manipulator, the current protection circuit is used for detecting the current output by the motor driver, the output end of the current protection circuit is connected with the PLC, the high-temperature protection circuit is used for detecting the working temperature of the motor, and the output end of the high-temperature protection circuit is connected with the PLC.
Give motor drive circuit through PLC controller output signal, motor drive circuit controls the motor again, realize the control of manipulator, overcurrent protection circuit and high temperature protection circuit have been increased wherein, to the electric current and the operating temperature real-time supervision of motor, when surpassing the setting value, feed back to the PLC controller, the PLC controller can connect other control circuit and carry out the outage processing, perhaps connect the display and show alarm information, the staff carries out corresponding processing, the operating condition of manipulator has further been ensured.
Further, as shown in FIG. 2,
a voltage conversion circuit is connected between a PLC (programmable logic controller) and a motor driver, the voltage conversion circuit comprises a photoelectric coupler U2 and a CMOS (complementary metal oxide semiconductor) device U1, the input end of the photoelectric coupler U2 is connected with a control signal of the PLC after being connected with a resistor R1 in series, the output end of the photoelectric coupler U2 is connected with the output end of a CMOS device U1, and the output end of the CMOS device U1 is connected with the voltage driver.
Because the voltage of the control signal output by the PLC is different from the voltage of the control signal received by the motor, level conversion is required; a photoelectric coupler U2 and a CMOS device U1 are adopted to form a level conversion circuit, and level conversion is carried out firstly; and secondly, isolating the output signal of the PLC and the input signal of a subsequent circuit to prevent interference. The CMOS device U1 shapes the signal output from the photo coupler U2 and processes the signal in the motor driving circuit.
Further, as shown in FIG. 3,
the overcurrent protection circuit comprises resistors R3, R4, R5 and an operational amplifier U3, wherein the resistors R3, R4 and R5 are connected between GND1 and GND2 in parallel, GND2 is the common ground of a motor driving circuit, GND1 is the common ground except the motor driving circuit, the GND1 is connected with the inverting input end of an operational amplifier U3 after being connected with the resistor R7 in series, the inverting input end of the operational amplifier U3 is connected with a reference voltage VERF, the GND is connected with the non-inverting input end of an operational amplifier U3 after being connected with the resistor R6 in series, and the output end of the operational amplifier U3 is connected with a PLC (programmable logic controller).
Because in the normal production of the high-pressure forming machine, the machined parts need to be continuously taken and placed, the mechanical arm needs to continuously work, the motors controlling the mechanical arm in different directions also need to continuously work, the standard of the running conditions of the motors is ensured, and certain guarantee is provided for the control of the mechanical arm. When the motor is blocked or the three-phase brushless motor runs in a phase failure mode, the motor driver is easy to cause overcurrent, the motor driver controls the motor part to be a high-power part, the current protection circuit monitors the current of the high-power part in real time, the current of the high-power part flows from GND2 to GND1 through resistors R3, R4 and R5, when the current is increased, the current flowing through resistors R3, R4 and R5 is also increased, the potential of GND2 becomes larger relative to GND1, and under the normal condition, the current is in the allowable range, the voltage between GND1 and GND2 does not exceed the reference voltage VERF of the operational amplifier U3 (the reference voltage is obtained in a conventional manner, and may be divided by a resistor), the operational amplifier U3 outputs low level, the PLC controller does not process, when short circuit occurs, or the motor current exceeds the standard range, the operational amplifier U3 outputs high level, the PLC controller controls the work of the disconnected high-power part, and the overcurrent protection circuit realizes overcurrent protection on the motor driver. The operational amplifier U3 is used as a comparator.
Further, as shown in FIG. 4,
the high-temperature protection circuit comprises resistors R8-R14, thermistors RT1 and RT2, an operational amplifier U4 and a triode Q1, wherein the resistors R8, R9, the thermistors RT1 and RT2 are in bridge connection, the connection point of the thermistors RT1 and R9 is connected with the homodromous input end of the operational amplifier U4 through the resistor R10, the connection point of the thermistors RT2 and R8 is connected with the inverting input end of the operational amplifier U4 through the resistor R11, the inverting input end and the output end of the operational amplifier U4 are connected through a resistor R12, the output end of the operational amplifier U4 is connected with the base of the triode Q1 through the resistor R13, and the emitter of the triode Q1 is used as the output end of the high-temperature protection circuit and is connected with a PLC controller.
The resistors R8, R9, the thermistors RT1 and RT2 form a bridge, wherein the thermistors RT1 and RT2 are temperature measuring resistors inside the motor, and when the temperature measuring resistors are used, the temperature measuring resistors are arranged inside the motor and receive the temperature of the motor and convert the temperature into current change. When the temperature of the motor exceeds the allowable temperature, the bridge is out of balance, namely RT1/R8 is not equal to RT2/R9, and then a signal is output to the operational amplifier U4, wherein resistors R10 and R11 are current-limiting resistors. The signal is amplified by the operational amplifier U4, and is output to the triode Q1 through the resistor R13 to be in saturated conduction, so that a high-level signal is output, and the motor drive is switched off or heat dissipation treatment is carried out.
Claims (4)
1. The blank taking manipulator control circuit for the high-pressure forming machine is characterized by comprising a PLC (programmable logic controller), a motor driver, an overcurrent protection circuit and a high-temperature protection circuit, wherein the PLC is used for providing a corresponding control signal for the motor driver and connecting the input end of the motor driver, the output end of the motor driver is connected with the motor, the motor is used as an electric execution element of the manipulator, the current protection circuit is used for detecting the current output by the motor driver, the output end of the current protection circuit is connected with the PLC, the high-temperature protection circuit is used for detecting the working temperature of the motor, and the output end of the high-temperature protection circuit is connected with the PLC.
2. The blank-taking manipulator control circuit for the high-pressure molding machine according to claim 1, characterized in that: a voltage conversion circuit is connected between the PLC and the motor driver and comprises a photoelectric coupler U2 and a CMOS device U1, the input end of the photoelectric coupler U2 is connected with a control signal of the PLC after being connected with a resistor R1 in series, the output end of the photoelectric coupler U2 is connected with the output end of the CMOS device U1, and the output end of the CMOS device U1 is connected with the voltage driver.
3. The blank-taking manipulator control circuit for the high-pressure molding machine according to claim 1, characterized in that: the overcurrent protection circuit comprises resistors R3, R4, R5 and an operational amplifier U3, the resistors R3, R4 and R5 are connected between GND1 and GND2 in parallel, GND2 is the common ground of the motor driving circuit, GND1 is the common ground except the motor driving circuit, the reverse-phase input end of the operational amplifier U3 is connected behind a GND1 series resistor R7, the reverse-phase input end of the operational amplifier U3 is connected with a reference voltage VERF, the non-phase input end of the operational amplifier U3 is connected behind a GND series resistor R6, and the output end of the operational amplifier U3 is connected with a PLC controller.
4. The blank-taking manipulator control circuit for the high-pressure molding machine according to claim 1, characterized in that: the high-temperature protection circuit comprises resistors R8-R14, thermistors RT1 and RT2, an operational amplifier U4 and a triode Q1, wherein the resistors R8, R9, the thermistors RT1 and RT2 are in bridge connection, the connection point of the thermistors RT1 and the resistor R9 is connected with the homodromous input end of the operational amplifier U4 through a resistor R10, the connection point of the thermistors RT2 and the resistor R8 is connected with the inverting input end of the operational amplifier U4 through a resistor R11, the inverting input end and the output end of the operational amplifier U4 are connected through a resistor R12, the output end of the operational amplifier U4 is connected with the base electrode of a triode Q1 through a resistor R13, and the emitter electrode of the triode Q1 is used as the output end of the high-temperature protection circuit and is connected with a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398643.8U CN215734084U (en) | 2021-06-23 | 2021-06-23 | Blank taking manipulator control circuit for high-pressure forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398643.8U CN215734084U (en) | 2021-06-23 | 2021-06-23 | Blank taking manipulator control circuit for high-pressure forming machine |
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| CN215734084U true CN215734084U (en) | 2022-02-01 |
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| CN202121398643.8U Active CN215734084U (en) | 2021-06-23 | 2021-06-23 | Blank taking manipulator control circuit for high-pressure forming machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2810266C1 (en) * | 2022-10-13 | 2023-12-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" | Device for protecting three-phase electric motor from emergency operating modes |
-
2021
- 2021-06-23 CN CN202121398643.8U patent/CN215734084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2810266C1 (en) * | 2022-10-13 | 2023-12-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" | Device for protecting three-phase electric motor from emergency operating modes |
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