CN213444752U - Tray assembly line practical training control system based on PLC - Google Patents
Tray assembly line practical training control system based on PLC Download PDFInfo
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- CN213444752U CN213444752U CN202022545292.0U CN202022545292U CN213444752U CN 213444752 U CN213444752 U CN 213444752U CN 202022545292 U CN202022545292 U CN 202022545292U CN 213444752 U CN213444752 U CN 213444752U
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Abstract
The utility model relates to a control system of real standard mechanism, especially a real standard control system of tray assembly line based on PLC. Including the PLC controller, its characterized in that: the PLC is respectively connected with the entrance photoelectric sensor, the photographing photoelectric sensor, the grabbing photoelectric sensor, the AGV receiving photoelectric sensor and the AGV transmitting photoelectric sensor; the PLC is connected with the tray production line through a tray production line driving unit; the tray production line driving unit is provided with a frequency converter for driving a tray production line motor, a first single electric control electromagnetic valve and a second single electric control electromagnetic valve; line AC motor is produced with the tray of line to the line AC motor is linked to each other with the tray to the line motor drive is produced to the tray, and the line is produced with the tray to the station of shooing of line and blocks that the cylinder links to each other to first single electric control solenoid valve, and the line is produced with the tray to the station of snatching that the cylinder blocks that the second single electric control solenoid valve links to each other. Each unit in the system can be operated independently, the combination is strong, and the training program is easy to learn and implement.
Description
Technical Field
The utility model relates to a control system of real standard mechanism, especially a real standard control system of tray assembly line based on PLC.
Background
The production line is a machine for continuously conveying workpieces on a fixed route, which is also called a conveying line, and the main function of the production line is to convey and transfer the workpieces. In the teaching and practical training of colleges and universities, a comprehensive system which is rich in functions, easy to split and beneficial to practical training is particularly needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a PLC-based tray assembly line practical training control system aiming at the defects, which transmits the tray loaded with the workpiece taken out from the vertical warehouse to the tray assembly line through an AGV conveying trolley; detecting through an industrial camera, acquiring the type and position information of a workpiece, and transmitting the workpiece to a grabbing position to wait for the robot to grab and assemble; the control system has strong combinability and convenient operation, and is beneficial to the culture and improvement of the professional skills of students.
The utility model discloses an adopt following technical scheme to realize:
a tray assembly line practical training control system based on a PLC comprises a PLC controller, wherein the PLC controller is respectively connected with an entrance photoelectric sensor, a photographing photoelectric sensor, a grabbing photoelectric sensor, an AGV receiving photoelectric sensor and an AGV transmitting photoelectric sensor; the PLC is connected with the tray production line through a tray production line driving unit; the tray production line driving unit is provided with a frequency converter for driving a tray production line motor, a first single electric control electromagnetic valve and a second single electric control electromagnetic valve; the motor drive frequency converter of the tray production line is connected with the tray production line alternating current motor of the tray production line, the first single electric control electromagnetic valve is connected with the photographing station blocking cylinder of the tray production line, and the second single electric control electromagnetic valve is connected with the grabbing station blocking cylinder of the tray production line;
the PLC controller is further connected with a camera controller, and the camera controller is respectively connected with the light source and the industrial camera and used for controlling the industrial camera to shoot and adjusting the brightness of the light source.
The PLC controller adopts a commercially available Schneider PLC programmable controller.
The working principle is as follows: the tray assembly line drives the speed multiplying chain to rotate back and forth by the three-phase asynchronous motor so as to convey the tray to a designated station. An inlet photoelectric sensor, a photographing photoelectric sensor and a grabbing photoelectric sensor are respectively arranged at an inlet of the tray production line, a photographing station and a grabbing station and are used for detecting the article tray; and a photographing station blocking cylinder and a grabbing station blocking cylinder are respectively arranged at the photographing station and the grabbing station and used for positioning the tray and blocking the follow-up tray.
The tray assembly line mainly comprises a workpiece butt joint station, an industrial visual detection station and a workpiece grabbing station. When the AGV conveying trolley moves to a butt joint station of the tray assembly line, the system automatically conveys trays on the AGV conveying trolley into the assembly line through a conveying roller way, and the photoelectric action of an inlet counts; when the industrial camera runs to the visual detection station, the visual station blocks the action of the air cylinder, the tray is fixed at a photographing position, and meanwhile, the industrial camera starts photographing and transmits position information processed by the camera controller to the PLC; after the completion of the retraction of the vision station blocking cylinder, the tray continues to run to a workpiece grabbing station, and after the tray is in place, the grabbing station blocks the action of the cylinder to prohibit a subsequent tray from entering the grabbing station; and meanwhile, waiting for the industrial robot to select a proper tool to grasp the workpiece according to the type and the coordinate of the workpiece, which are given by the PLC.
The utility model has the advantages of it is following: a PLC-based tray assembly line practical training control system is complete in control function, and can realize automatic butt joint with an AGV conveying trolley, visual detection of workpieces in trays, data processing of workpiece types and position coordinates by the PLC and scheduling of a robot; the automation degree of the equipment is high through the cooperation of the PLC, the industrial camera, the frequency converter and the human-computer interface HMI; the type and the position coordinates of the workpiece are detected through the industrial camera, manual operation is reduced, and the detection precision is high; each unit in the system can be operated independently, the combination is strong, and the training program is easy to learn and implement.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a control schematic block diagram of the present invention;
FIG. 2 is a wiring diagram of the PLC controller of the present invention;
fig. 3 is an electrical schematic diagram of the power supply circuit of the present invention;
fig. 4 is a schematic diagram of a driving circuit of the present invention;
fig. 5 is a schematic diagram of a camera control circuit according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to the attached drawing 1, the utility model relates to a tray assembly line practical training control system based on PLC, which comprises a PLC controller, wherein the PLC controller is respectively connected with an entrance photoelectric sensor, a photographing photoelectric sensor, a grabbing photoelectric sensor, an AGV receiving photoelectric sensor and an AGV transmitting photoelectric sensor; the PLC is connected with the tray production line through a tray production line driving unit; the tray production line driving unit is provided with a frequency converter for driving a tray production line motor, a first single electric control electromagnetic valve and a second single electric control electromagnetic valve; the motor drive frequency converter of the tray production line is connected with the tray production line alternating current motor of the tray production line, the first single electric control electromagnetic valve is connected with the photographing station blocking cylinder of the tray production line, and the second single electric control electromagnetic valve is connected with the grabbing station blocking cylinder of the tray production line;
the PLC controller is further connected with a camera controller, and the camera controller is respectively connected with the light source and the industrial camera and used for controlling the industrial camera to shoot and adjusting the brightness of the light source.
In the embodiment, the butt joint of the AGV conveying trolley and the tray assembly line is realized by 2 pairs of counter photoelectric sensors; when the AGV conveying trolley arrives at the tray assembly line side, the transmitting end photoelectric conduction of the side face of the AGV conveying trolley is conducted, the assembly line receiving end receives the signal, the tray assembly line starts to run, the gas baffle on the AGV trolley descends, the belt runs in the same direction, and the tray is conveyed to the assembly line unit.
When the tray is powered off through the inlet of the production line, counting operation is carried out; when photo-electricity is taken, the photographing air baffle acts to fix the tray at a photographing position, an industrial camera is used for photographing a workpiece picture in the tray, and the workpiece type and position information are transmitted to the PLC through a bus after being processed by the camera controller; meanwhile, the photographing gas block resets to wait for the next tray.
The photographed tray is continuously transferred to a grabbing station through a production line, and when the photographed tray passes through the grabbing station and is photoelectric, a grabbing position gas shield acts to fix the tray at the grabbing position; waiting for the PLC to drive the robot to perform grabbing action. And after the workpieces are grabbed, the robot grabs the empty tray into the empty tray recovery frame.
The driving motor of the tray assembly line is controlled by a frequency converter; the PLC controls the frequency converter to realize speed regulation operation in an analog quantity control mode.
The manual control of the tray assembly line is operated by an external master control electric appliance, and the interaction of the running state parameters and the data is completed by a touch screen.
Fig. 2 is a wiring diagram of a PLC controller of the present control system. In this embodiment, a commercially available schneider PLC programmable controller TM241CEC24R is used as the PLC controller. An L, N, PE terminal (a phase line, a neutral line and a protective grounding line) of the PLC is connected with an external power supply; a Q0.3 terminal of the PLC is connected with an intermediate relay KA2, and when an output signal of the Q0.3 terminal is 1, a contact of the intermediate relay KA2 drives a photographing station to block an air cylinder to act; a Q0.4 terminal of the PLC is connected with an intermediate relay KA3 coil for the grabbing station blocking cylinder; a Q0.5 terminal of the PLC is connected with the intermediate relay KA4, and when the output signal of the Q0.5 terminal is 1, a contact of the PLC triggers the camera to take a picture; a Q0.6 terminal of the PLC is connected with a buzzer, and an alarm is given when the assembly line fails; a Q0.7 terminal of the PLC is connected with the operation indicator lamp; and a Q1.0 terminal of the PLC is connected with the photoelectric switch for butting the AGV conveying trolley, and when the output signal of the Q1.0 terminal is 1, the AGV conveying trolley is driven to leave the tray assembly line. The I0.0, I0.1 and I0.2 terminals of the PLC controller are respectively connected with the emergency stop button, the start button and the stop button; the I0.3 terminal of the PLC is connected with the photographing completion signal output end of the camera controller; the I0.4, I0.5 and I0.6 terminals of the PLC controller are respectively connected with an inlet photoelectric sensor, a photographing photoelectric sensor and a grabbing photoelectric sensor on the tray production line; an I0.7 terminal of the PLC is connected with an AGV conveying trolley butt joint photoelectric switch, and when a signal of the I0.7 terminal is 1, the AGV conveying trolley can be confirmed to run to a production line butt joint position; and an I1.1 terminal of the PLC is connected with a fault output signal end of the frequency converter.
FIG. 3 is an electrical schematic diagram of a power supply circuit of the control system, wherein L1, L2, L3 and PE are external power supply line terminals, and a three-phase load switch QF0 is used as a system main power switch; l1, L2 and L3 respectively represent three phase lines of a three-phase power supply, and PE represents a protective grounding line; a 380V power indicator HL1 is connected to the phase lines L1 and L2 behind the three-phase load switch QF0, and when the system is powered on, the power indicator HL1 is lightened; the three-phase air switch QF1 provides a power supply for the industrial robot; the two-phase air switch QF3 is connected with a 380V/220V isolation transformer, so that the electricity safety is ensured, and meanwhile, a power supply is provided for the electric equipment of the system AC 220V; the two-phase air switch QF4 provides power for the computer socket; the two-phase air switch QF5 provides power for the socket in the cabinet and the illumination; the two-phase air switch QF6 is connected with a cooling fan motor in the control cabinet; the two-phase air switch QF7 provides power for the PLC controller, the industrial camera and the DC24V switching power supply; the two-phase air switch QF8 provides power for the camera controller; the filter is connected in series in the power supply loop and used for suppressing higher harmonics and external interference.
Fig. 4 is a tray pipeline driving circuit. In the embodiment, the three-phase air switch QF2 provides power for the frequency converter; the frequency converter control contactor KM1 is connected with a frequency converter power supply terminal R, S, T and controls the running state of the frequency converter; the output terminal U, V, W of the main circuit of the frequency converter is directly connected to the assembly line drive motor M1, and the motor shell is connected with a protective grounding PE terminal; control terminals LI1, LI2 and LI3 of the frequency converter are respectively connected with forward rotation and reverse rotation control signals output by the PLC controller and fault reset control signals of the frequency converter; the relay terminal R1B and the relay terminal R1C of the frequency converter fault output signal are connected to the I1.1 terminal of the PLC controller.
FIG. 5 is a camera control circuit, in this embodiment, a camera controller is placed in a transfer box located on the pallet track; in the figure, the L, N terminal of the camera controller is connected with an external alternating current 220V power supply, and the 24V and 0V terminals of the camera controller are connected with a direct current 24V power supply introduced by a power supply loop switch power supply V1; the X0 terminal of the camera controller is connected with a photographing trigger signal, and when the photographing trigger signal is 1, the camera controller triggers the camera to start photographing; the Y0 terminal of the camera controller is connected to the I0.3 terminal of the PLC controller to provide a camera photographing completion signal; the A, B terminal of the camera controller is a communication terminal, and is connected to a communication module of the PLC controller using a two-core shielded twisted pair.
The tray assembly line has more abundant functions, can realize automatic butt joint with an AGV conveying trolley, and automatically conveys workpieces with transfer to the assembly line; the visual inspection of the workpieces in the tray can be carried out, and the visual information of the workpieces is calculated and processed through the visual controller; and the processed workpiece type and position coordinate data are transmitted to the PLC, and the workpiece grabbing task is completed by scheduling the industrial robot. The system is a comprehensive system integrating industrial vision and robot control.
Claims (8)
1. The utility model provides a real control system that instructs of tray assembly line based on PLC, includes the PLC controller, its characterized in that: the PLC is respectively connected with the entrance photoelectric sensor, the photographing photoelectric sensor, the grabbing photoelectric sensor, the AGV receiving photoelectric sensor and the AGV transmitting photoelectric sensor; the PLC is connected with the tray production line through a tray production line driving unit; the tray production line driving unit is provided with a frequency converter for driving a tray production line motor, a first single electric control electromagnetic valve and a second single electric control electromagnetic valve; line AC motor is produced with the tray of line to the line AC motor is linked to each other with the tray to the line motor drive is produced to the tray, and the line is produced with the tray to the station of shooing of line and blocks that the cylinder links to each other to first single electric control solenoid valve, and the line is produced with the tray to the station of snatching that the cylinder blocks that the second single electric control solenoid valve links to each other.
2. The PLC-based tray pipeline training control system according to claim 1, wherein: the PLC controller is further connected with a camera controller, and the camera controller is respectively connected with the light source and the industrial camera and used for controlling the industrial camera to shoot and adjusting the brightness of the light source.
3. The PLC-based tray pipeline training control system according to claim 2, wherein: the PLC controller adopts a Schneider PLC programmable controller.
4. The PLC-based tray pipeline training control system according to claim 3, wherein: an L, N, PE terminal of the PLC is connected with an external power supply, and L, N, PE represents a phase line, a neutral line and a protective grounding line respectively; a Q0.3 terminal of the PLC is connected with an intermediate relay KA2, and when an output signal of the Q0.3 terminal is 1, a contact of the intermediate relay KA2 drives a photographing station to block an air cylinder to act; a Q0.4 terminal of the PLC is connected with an intermediate relay KA3 coil for the grabbing station blocking cylinder; a Q0.5 terminal of the PLC is connected with the intermediate relay KA4, and when the output signal of the Q0.5 terminal is 1, a contact of the PLC triggers the camera to take a picture; a Q0.6 terminal of the PLC is connected with a buzzer, and an alarm is given when the assembly line fails; a Q0.7 terminal of the PLC is connected with the operation indicator lamp; a Q1.0 terminal of the PLC is connected with a butt photoelectric switch of the AGV conveying trolley, and when an output signal of the Q1.0 terminal is 1, the AGV conveying trolley is driven to leave the tray assembly line;
the I0.0, I0.1 and I0.2 terminals of the PLC controller are respectively connected with the emergency stop button, the start button and the stop button; the I0.3 terminal of the PLC is connected with the photographing completion signal output end of the camera controller; the I0.4, I0.5 and I0.6 terminals of the PLC controller are respectively connected with an inlet photoelectric sensor, a photographing photoelectric sensor and a grabbing photoelectric sensor on the tray production line; an I0.7 terminal of the PLC is connected with an AGV conveying trolley butt joint photoelectric switch, and when a signal of the I0.7 terminal is 1, the AGV conveying trolley can be confirmed to run to a production line butt joint position; and an I1.1 terminal of the PLC is connected with a fault output signal end of the frequency converter.
5. The PLC-based tray pipeline training control system according to claim 3, wherein: in a power supply loop of the control system, L1, L2, L3 and PE are external power supply incoming terminals, and a three-phase load switch QF0 is used as a system main power supply switch; l1, L2 and L3 respectively represent three phase lines of a three-phase power supply, and PE represents a protective grounding line; a 380V power indicator HL1 is connected to the phase lines L1 and L2 behind the three-phase load switch QF0, and when the system is powered on, the power indicator HL1 is lightened; the three-phase air switch QF1 provides a power supply for the industrial robot; the two-phase air switch QF3 is connected with a 380V/220V isolation transformer, so that the electricity safety is ensured, and meanwhile, a power supply is provided for the electric equipment of the system AC 220V; the two-phase air switch QF4 provides power for the computer socket; the two-phase air switch QF5 provides power for the socket in the cabinet and the illumination; the two-phase air switch QF6 is connected with a cooling fan motor in the control cabinet; the two-phase air switch QF7 provides power for the PLC controller, the industrial camera and the DC24V switching power supply; the two-phase air switch QF8 provides power to the industrial camera controller.
6. The PLC-based tray pipeline training control system according to claim 5, wherein: and a filter is connected in the power supply loop in series and used for suppressing higher harmonics and external interference.
7. The PLC-based tray pipeline training control system according to claim 3, wherein: in a tray assembly line driving circuit of the control system, a three-phase air switch QF2 provides power for a frequency converter; the frequency converter control contactor KM1 is connected with a frequency converter power supply terminal R, S, T and controls the running state of the frequency converter; the output terminal U, V, W of the main circuit of the frequency converter is directly connected to the assembly line drive motor M1, and the motor shell is connected with a protective grounding PE terminal; control terminals LI1, LI2 and LI3 of the frequency converter are respectively connected with forward rotation and reverse rotation control signals output by the PLC controller and fault reset control signals of the frequency converter; the relay terminal R1B and the relay terminal R1C of the frequency converter fault output signal are connected to the I1.1 terminal of the PLC controller.
8. The PLC-based tray pipeline training control system according to claim 3, wherein: in a camera control circuit of the control system, a camera controller is placed in a transfer box on a tray production line; the L, N terminal of the camera controller is connected with an external alternating current 220V power supply, and the 24V and 0V terminals of the camera controller are connected with a direct current 24V power supply introduced by a power supply loop switch power supply V1; the X0 terminal of the camera controller is connected with a photographing trigger signal, and when the photographing trigger signal is 1, the camera controller triggers the camera to start photographing; the Y0 terminal of the camera controller is connected to the I0.3 terminal of the PLC controller to provide a camera photographing completion signal; the A, B terminal of the camera controller is a communication terminal, and is connected to a communication module of the PLC controller using a two-core shielded twisted pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022545292.0U CN213444752U (en) | 2020-11-06 | 2020-11-06 | Tray assembly line practical training control system based on PLC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022545292.0U CN213444752U (en) | 2020-11-06 | 2020-11-06 | Tray assembly line practical training control system based on PLC |
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| CN213444752U true CN213444752U (en) | 2021-06-15 |
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| CN202022545292.0U Active CN213444752U (en) | 2020-11-06 | 2020-11-06 | Tray assembly line practical training control system based on PLC |
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Effective date of registration: 20231226 Address after: 213000 No.134, Daluo Road, Luoyang Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Hangxin Technology Co.,Ltd. Address before: No. 1600, gaolang West Road, Binhu District, Wuxi City, Jiangsu Province Patentee before: WUXI INSTITUTE OF TECHNOLOGY |