Motor control device for controlling rotation of movable mold or mold core pulling of plastic mold

Abstract

The utility model discloses a motor control device for controlling rotation of a movable mold of a plastic mold or mold core pulling, the plastic mold of an injection molding machine connected with the motor control device comprises a fixed mold, the movable mold and a servo motor, and the motor control device comprises a driving control module and a power supply module, a first signal end of the driving control module is connected with the injection molding machine so as to receive a trigger signal; the power supply module comprises a live wire output end and a null line output end, the driving control module comprises a driving input end and a driving output end, the driving input end is connected with the live wire output end and the null line output end, the driving output end is connected with the servo motor, and the driving control module is used for converting alternating current input by the power supply module into three-phase high-frequency carrier current; and the magnitude of the current is controlled. According to the motor control device for controlling the rotation of the movable mold of the plastic mold or the core pulling of the mold, the control of the device is optimized through a driving and control integrated scheme, so that the servo motor can stably and reliably operate, and the size of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor control, in particular to a motor control device for controlling the rotation of a movable mold of a plastic mold or the core pulling of a mold. Background Art

[0002] Existing solutions for controlling the plastic mold of an injection molding machine to rotate the movable mold or pull the mold core generally include a hydraulic cylinder solution and an electric control solution. The disadvantage of the hydraulic cylinder solution is that a hydraulic system needs to be set up at the injection molding site, and the system configuration is cumbersome; while the disadvantage of the existing electric control solution is that the electric box is bulky and inconvenient to use, and due to unreasonable solution design, the servo system is prone to shutdown and error reporting, poor reliability, and a short service life of the motor, which affects the injection molding efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a motor control device for controlling the rotation of a movable mold of a plastic mold or the core pulling of a mold, and to optimize the control process of the device through a servo drive and control integrated solution, so that the servo motor can operate stably and reliably and greatly reduce the size of the device.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses a motor control device for controlling the rotation of a movable mold of a plastic mold or the core pulling of a mold. The plastic mold of an injection molding machine connected to the motor control device includes a fixed mold, a movable mold and a servo motor connected to the movable mold. The motor control device includes:

[0005] A drive control module, the drive control module comprising a first signal terminal, the first signal terminal being connected to the injection molding machine to receive a trigger signal;

[0006] A power supply module, the power supply module includes a live wire output terminal and a neutral wire output terminal, the drive control module includes a drive input terminal and a drive output terminal, the drive input terminal is connected to the live wire output terminal and the neutral wire output terminal, the drive output terminal is connected to the servo motor, and the drive control module is used to convert the alternating current input by the power supply module into a three-phase high-frequency carrier current and control the magnitude of the current;

[0007] When driving the movable mold, the drive control module is used to control the drive output end to output a three-phase high-frequency carrier current with a first current according to the trigger signal, so as to drive the servo motor to control the rotation or core pulling of the movable mold;

[0008] When maintaining the movable mold, the drive control module is used to control the drive output end to output a three-phase high-frequency carrier current with a second current that is smaller than the first current, so as to drive the servo motor to maintain the current position of the movable mold.

[0009] Optionally, the motor control device also includes a relay module, which includes two input relays, the input ends of the two input relays are connected to the injection molding machine, and the output ends of the two input relays are connected to the first signal end, and the injection molding machine is used to send clockwise trigger signals and counterclockwise trigger signals to the drive control module through the two input relays.

[0010] Optionally, the motor control device also includes a transfer bank and a manual control module, the first signal end is connected to the first transfer side of the transfer bank, the manual control module is connected to the second transfer side of the transfer bank, the manual control module includes a clockwise trigger switch and a counterclockwise trigger switch, and the clockwise trigger switch and the counterclockwise trigger switch are used to output the clockwise trigger signal and the counterclockwise trigger signal to the drive control module through the transfer bank.

[0011] Optionally, the relay module also includes two output relays, the input ends of the two output relays are connected to the first signal end, the input ends of the two output relays are connected to the injection molding machine, and the drive control module is used to send clockwise completion signals and counterclockwise completion signals to the injection molding machine through the two output relays.

[0012] Optionally, the motor control device also includes a transfer line block, a first sensor and a second sensor, the first sensor and the second sensor are arranged corresponding to the movable mold, the first sensor is used to detect the position of the movable mold when it rotates or pulls the core, and the second sensor is used to detect the position of the movable mold when it is reset, the first signal end is connected to the first transfer side of the transfer line block, the first sensor and the second sensor are connected to the second transfer side of the transfer line block, and the first sensor and the second sensor are used to output in-position signals and reset signals to the drive control module through the transfer line block.

[0013] Optionally, the motor control device also includes a voltage conversion module, the input end of the voltage conversion module is connected to the live wire output end and the neutral wire output end of the power supply module, the output end of the voltage conversion module is connected to the power supply end of the drive control module, and the voltage conversion module is used to convert the alternating current output by the power supply module into direct current to output and drive the drive control module to work.

[0014] Optionally, the motor control device also includes a speed regulator, an input end of the speed regulator is connected to the output end of the voltage conversion module, the drive control module also includes a second signal end, the output end of the speed regulator is connected to the second signal end, the speed regulator is used to adjust the size of the analog signal input to the second signal end, and the drive control module is used to control the size of the output three-phase high-frequency carrier current according to the analog signal.

[0015] Optionally, the motor control device also includes an installation shell and a cooling fan, the power supply module, the drive control module and the cooling fan are arranged in the installation shell, the power supply end of the cooling fan is connected to the live wire output end and the neutral wire output end of the power supply module, and the cooling fan is used to reduce the temperature inside the installation shell.

[0016] The utility model is provided with a drive control module to control the servo motor, the first signal end of the drive control module is connected to the injection molding machine to receive a trigger signal, the drive input end of the drive control module is connected to the live wire output end and the neutral wire output end of the power supply module, the drive output end of the drive control module is connected to the servo motor, the drive control module is responsible for converting the alternating current input by the power supply module into a three-phase high-frequency carrier current, and controlling the magnitude of the current when it is output from the drive output end, so as to control the drive output end to output the three-phase high-frequency carrier current with a first current according to the trigger signal, thereby driving the servo motor of the injection molding machine to control the rotation or core pulling of the movable mold, and after the movable mold completes the action, controlling the drive output end to output the three-phase high-frequency carrier current with a second current less than the first current, thereby driving the servo motor to maintain the current position of the movable mold, thereby realizing the optimization of the control process of the device through the integrated servo drive and control solution, so that the servo motor can operate stably and reliably and greatly reduce the volume of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The circuit structure diagram of the motor control device for controlling the rotation of the movable mold or the core pulling of the mold according to the embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.

[0019] See also Figure 1 The utility model discloses a motor control device for controlling the rotation of a movable mold of a plastic mold or the core pulling of a mold. The plastic mold of an injection molding machine connected to the motor control device includes a fixed mold, a movable mold and a servo motor 100 connected to the movable mold. The motor control device includes:

[0020] A drive control module 1, the drive control module 1 comprises a first signal terminal X12, the first signal terminal X12 is connected to the injection molding machine to receive a trigger signal;

[0021] The power supply module 2 includes a live output terminal 21 and a neutral output terminal 22. The drive control module 1 includes a drive input terminal 11 and a drive output terminal UVW. The drive input terminal 11 is connected to the live output terminal 21 and the neutral output terminal 22. The drive output terminal UVW is connected to the servo motor 100. The drive control module 1 is used to convert the alternating current input by the power supply module 2 into a three-phase high-frequency carrier current and control the magnitude of the current.

[0022] When driving the movable mold, the drive control module 1 is used to control the drive output terminal UVW to output a three-phase high-frequency carrier current with a first current according to a trigger signal, so as to drive the servo motor 100 to control the rotation or core pulling of the movable mold;

[0023] When the movable mold is maintained, the drive control module 1 is used to control the drive output terminal UVW to output a three-phase high-frequency carrier current with a second current smaller than the first current, so as to drive the servo motor 100 to maintain the current position of the movable mold.

[0024] The utility model is provided with a drive control module 1 to control a servo motor 100. A first signal terminal X12 of the drive control module 1 is connected to an injection molding machine to receive a trigger signal. A drive input terminal 11 of the drive control module 1 is connected to a live wire output terminal 21 and a neutral wire output terminal 22 of a power supply module 2. A drive output terminal UVW of the drive control module 1 is connected to the servo motor 100. The drive control module 1 is responsible for converting the alternating current input by the power supply module 2 into a three-phase high-frequency carrier current, and controlling the current size when the current is output from the drive output terminal UVW, so as to control the drive output terminal UVW to output the three-phase high-frequency carrier current with a first current according to the trigger signal, thereby driving the servo motor 100 of the injection molding machine to control the rotation or core pulling of the movable mold, and after the movable mold completes the action, controlling the drive output terminal UVW to output the three-phase high-frequency carrier current with a second current less than the first current, so as to drive the servo motor 100 to maintain the current position of the movable mold, thereby realizing the optimization of the control process of the device through a servo drive and control integrated solution, so that the servo motor 100 can operate stably and reliably and greatly reduce the size of the device.

[0025] Specifically, in the present embodiment, the output signal of the injection molding machine includes a first action signal and a second action signal. When the motor control device detects the first action signal, the drive control module 1 drives the driving end of the servo motor 100 connected to the movable mold to rotate clockwise to drive the movable mold of the two-color mold of the injection molding machine to rotate or core pull. When the motor control device detects the second action signal, the drive control module 1 drives the driving end of the servo motor 100 connected to the movable mold to rotate counterclockwise to drive the movable mold of the two-color mold of the injection molding machine to rotate back or reset the core pull, and continues to energize the servo motor 100 after each movable mold action is completed to drive the servo motor 100 to maintain the current static position of the movable mold, but is not limited to this. By finely controlling the position and torque of the servo motor 100 during the rotation (core pulling) of the movable mold and when the action stops, it is beneficial to improve the reliability of the operation of the servo motor 100.

[0026] See also Figure 1 The motor control device also includes a relay module 3, which includes two input relays 31. The input ends of the two input relays 31 are connected to the injection molding machine, and the output ends of the two input relays 31 are connected to the first signal end X12. The injection molding machine is used to send a clockwise trigger signal and a counterclockwise trigger signal to the drive control module 1 through the two input relays 31.

[0027] Specifically, in the present embodiment, a relay coil 301 and a relay switch 302 are provided in the two input relays 31, the injection molding machine is connected to the relay coil 301 of the two input relays 31, and the relay switch 302 of the two input relays 31 is connected to the first signal terminal X12 of the drive control module 1 through the adapter bank 4. The injection molding machine controls the relay switch 302 to close by energizing the relay coil 301 of the corresponding input relay 31 to send a clockwise trigger signal or a counterclockwise trigger signal to the drive control module 1. The drive control module 1 drives the drive end of the servo motor 100 connected to the movable mold to rotate clockwise or counterclockwise according to the received clockwise trigger signal or counterclockwise trigger signal, but is not limited to this.

[0028] See also Figure 1 The motor control device also includes a transfer bus 4 and a manual control module 5. The first signal terminal X12 is connected to the first transfer side of the transfer bus 4. The manual control module 5 is connected to the second transfer side of the transfer bus 4. The manual control module 5 includes a clockwise trigger switch 51 and a counterclockwise trigger switch 52. The clockwise trigger switch 51 and the counterclockwise trigger switch 52 are used to output a clockwise trigger signal and a counterclockwise trigger signal to the drive control module 1 through the transfer bus 4.

[0029] Specifically, in this embodiment, the manual control module 5 is also provided with a switching switch 53 for switching between manual triggering and automatic triggering, a buzzer 54 and a manual indicator light 55. When the switching switch 53 is closed to send a manual control signal to the first signal terminal X12, the drive control module 1 will drive the manual indicator light 55 to light up through the adapter bus 4, and can control the operation of the servo motor 100 by triggering the clockwise trigger switch 51 and the counterclockwise trigger switch 52; and when the drive control module 1 drives the servo motor 100 to operate, the buzzer 54 will be driven to work through the adapter bus 4, but it is not limited to this.

[0030] See also Figure 1 The relay module 3 also includes two output relays 32, the input ends of the two output relays 32 are connected to the first signal end X12, and the input ends of the two output relays 32 are connected to the injection molding machine. The drive control module 1 is used to send a clockwise completion signal and a counterclockwise completion signal to the injection molding machine through the two output relays 32.

[0031] Specifically, in this embodiment, a relay coil 301 and a relay switch 302 are provided in the two output relays 32. The first signal terminal X12 of the drive control module 1 is connected to the relay coil 301 of the two output relays 32 through the adapter bank 4. The relay switches 302 of the two output relays 32 are connected to the injection molding machine. The drive control module 1 controls the relay switch 302 to close by energizing the relay coil 301 of the corresponding output relay 32 to send a clockwise completion signal or a counterclockwise completion signal to the injection molding machine.

[0032] See also Figure 1 The motor control device also includes a transfer wire bank 4, a first sensor and a second sensor. The first sensor and the second sensor are arranged corresponding to the movable mold. The first sensor is used to detect the position of the movable mold when it rotates or pulls the core. The second sensor is used to detect the position of the movable mold when it is reset. The first signal terminal X12 is connected to the first transfer side of the transfer wire bank 4, and the first sensor and the second sensor are connected to the second transfer side of the transfer wire bank 4. The first sensor and the second sensor are used to output a position signal and a reset signal to the drive control module 1 through the transfer wire bank 4.

[0033] Specifically, in this embodiment, a mold proximity switch A is arranged between the first sensor and the second adapter side of the adapter bus 4, and the first sensor drives the mold proximity switch A to close to output an in-position signal to the drive control module 1, and a mold proximity switch B is arranged between the second sensor and the second adapter side of the adapter bus 4, and the second sensor drives the mold proximity switch B to close to output a reset signal to the drive control module 1. The drive control module 1 drives the servo motor 100 to maintain the current position of the movable mold according to the control in-position signal and the reset signal, but is not limited to this.

[0034] See also Figure 1 The motor control device also includes a voltage conversion module 6, the input end of the voltage conversion module 6 is connected to the live wire output end 21 and the neutral wire output end 22 of the power supply module 2, and the output end of the voltage conversion module 6 is connected to the power supply end of the drive control module 1. The voltage conversion module 6 is used to convert the alternating current output by the power supply module 2 into direct current to output and drive the drive control module 1 to work.

[0035] Specifically, in this embodiment, the power supply module 2 includes an extended line bar 23, the live wire output terminal 21 and the neutral wire output terminal 22 of the power supply module 2 are connected to the first connection side of the extended line bar 23, the input end of the voltage conversion module 6 is connected to the second connection side of the extended line bar 23, and the power supply module 2 provides 220V AC power to the voltage conversion module 6 through the extended line bar 23.

[0036] Specifically, in this embodiment, the power supply module 2 includes a switch contactor 24, a power switch 25 and a power off switch 26. The switch contactor 24 is provided with two connection end switches 241, a control end switch 242 and a control coil 243 for controlling the control end switch 242 to be closed or disconnected. The first ends of the two connection end switches 241 are connected to the live wire and the neutral wire of the mains, and the second ends are formed as the live wire output end 21 and the neutral wire output end 22. The control end switch 242 is used to control the two ends of the two connection end switches 241 to be closed or disconnected.

[0037] The power-off switch 26 is a normally closed switch. One end of the power-off switch 26 is connected to the live wire of the mains, and the other end is connected to the control coil 243 through the control end switch 242. The control coil 243 is connected to the neutral wire of the mains. When the power-off switch 26 is turned off, the control coil 243 controls the control end switch 242 to turn off, and the two ends of the two connection end switches 241 are disconnected.

[0038] The power switch 25 is a normally open switch. One end of the power switch 25 is connected to the live wire of the AC power through the power-off switch 26, and the other end is connected to the neutral wire of the AC power through the control coil 243. After the power switch 25 is closed, the control coil 243 controls the control end switch 242 to close, and the two ends of the two connection end switches 241 are connected, but not limited to this.

[0039] See also Figure 1 The motor control device also includes a speed regulator 7, an input end of the speed regulator 7 is connected to the output end of the voltage conversion module 6, and the drive control module 1 also includes a second signal terminal X11, and the output end of the speed regulator 7 is connected to the second signal terminal X11. The speed regulator 7 is used to adjust the size of the analog signal input to the second signal terminal X11, and the drive control module 1 is used to control the size of the output three-phase high-frequency carrier current according to the analog signal.

[0040] Specifically, in this embodiment, the speed regulator 7 includes a potentiometer 71 and a resistor 72, the first end of the resistor 72 is connected to the output end of the voltage conversion module 6, the second end of the resistor 72 is connected to the ninth pin of the second signal terminal X11 and one of the fixed ends of the potentiometer 71, and the active end of the potentiometer 71 is connected to the eleventh pin of the second signal terminal X11. The size of the analog signal is changed by adjusting the active end of the potentiometer 71 to control the rotation speed of the driving end of the servo motor 100 connected to the movable mold driven by the drive control module 1, thereby controlling the movable mold of the injection molding machine to complete the rotation or core pulling action within the set time, but is not limited to this.

[0041] Specifically, in this embodiment, the drive control module 1 also includes a feedback terminal Feedback, which is connected to the signal output terminal of the servo motor 100. The servo motor 100 is used to send the rotation angle of the drive end of the servo motor 100 connected to the movable mold to the drive control module 1 through the feedback terminal Feedback.

[0042] See also Figure 1 The motor control device also includes an installation shell and a cooling fan Exhaust Fan. The power supply module 2, the drive control module 1 and the cooling fan Exhaust Fan are arranged in the installation shell. The power supply end of the cooling fan Exhaust Fan is connected to the live wire output end 21 and the neutral wire output end 22 of the power supply module 2. The cooling fan Exhaust Fan is used to reduce the temperature in the installation shell.

[0043] Specifically, in this embodiment, the live wire output terminal 21 and the neutral wire output terminal 22 of the power supply module 2 are connected to the first connection side of the extended line bar 23, two cooling fans Exhaust Fan are provided, and the power supply ends of the two cooling fans Exhaust Fan are connected to the second connection side of the extended line bar 23. The power supply module 2 provides the cooling fan Exhaust Fan with the AC power required for its operation through the extended line bar 23.

[0044] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A motor control device for controlling the rotation of a plastic mold or the core pulling of a mold, characterized in that: The plastic mold of the injection molding machine connected to the motor control device includes a fixed mold, a movable mold and a servo motor connected to the movable mold, and the motor control device includes: A drive control module, the drive control module comprising a first signal terminal, the first signal terminal being connected to the injection molding machine to receive a trigger signal; A power supply module, the power supply module includes a live wire output terminal and a neutral wire output terminal, the drive control module includes a drive input terminal and a drive output terminal, the drive input terminal is connected to the live wire output terminal and the neutral wire output terminal, the drive output terminal is connected to the servo motor, and the drive control module is used to convert the alternating current input by the power supply module into a three-phase high-frequency carrier current and control the magnitude of the current; When driving the movable mold, the drive control module is used to control the drive output end to output a three-phase high-frequency carrier current with a first current according to the trigger signal, so as to drive the servo motor to control the rotation or core pulling of the movable mold; When maintaining the movable mold, the drive control module is used to control the drive output end to output a three-phase high-frequency carrier current with a second current that is smaller than the first current, so as to drive the servo motor to maintain the current position of the movable mold.

2. The motor control device for controlling the rotation of a movable mold or the core pulling of a mold according to claim 1, characterized in that: It also includes a relay module, which includes two input relays, the input ends of the two input relays are connected to the injection molding machine, and the output ends of the two input relays are connected to the first signal end. The injection molding machine is used to send clockwise trigger signals and counterclockwise trigger signals to the drive control module through the two input relays.

3. The motor control device for controlling the rotation of a movable mold or the core pulling of a plastic mold according to claim 2, characterized in that: It also includes a transfer line bank and a manual control module, the first signal end is connected to the first transfer side of the transfer line bank, the manual control module is connected to the second transfer side of the transfer line bank, the manual control module includes a clockwise trigger switch and a counterclockwise trigger switch, the clockwise trigger switch and the counterclockwise trigger switch are used to output the clockwise trigger signal and the counterclockwise trigger signal to the drive control module through the transfer line bank.

4. The motor control device for controlling the rotation of a movable mold or the core pulling of a plastic mold according to claim 2, characterized in that: The relay module also includes two output relays, the input ends of the two output relays are connected to the first signal end, the input ends of the two output relays are connected to the injection molding machine, and the drive control module is used to send clockwise completion signals and counterclockwise completion signals to the injection molding machine through the two output relays.

5. The motor control device for controlling the rotation of a movable mold or the core pulling of a mold according to claim 1, characterized in that: It also includes a transfer line block, a first sensor and a second sensor, the first sensor and the second sensor are arranged corresponding to the movable mold, the first sensor is used to detect the position of the movable mold when it rotates or pulls the core, and the second sensor is used to detect the position of the movable mold when it is reset, the first signal end is connected to the first transfer side of the transfer line block, the first sensor and the second sensor are connected to the second transfer side of the transfer line block, and the first sensor and the second sensor are used to output an in-position signal and a reset signal to the drive control module through the transfer line block.

6. The motor control device for controlling the rotation of a movable mold or the core pulling of a plastic mold according to claim 1, characterized in that: It also includes a voltage conversion module, the input end of the voltage conversion module is connected to the live wire output end and the neutral wire output end of the power supply module, the output end of the voltage conversion module is connected to the power supply end of the drive control module, and the voltage conversion module is used to convert the alternating current output by the power supply module into direct current to output and drive the drive control module to work.

7. The motor control device for controlling the rotation of a movable mold or the core pulling of a mold according to claim 6, characterized in that: It also includes a speed regulator, the input end of the speed regulator is connected to the output end of the voltage conversion module, the drive control module also includes a second signal end, the output end of the speed regulator is connected to the second signal end, the speed regulator is used to adjust the size of the analog signal input to the second signal end, and the drive control module is used to control the size of the output three-phase high-frequency carrier current according to the analog signal.

8. The motor control device for controlling the rotation of a movable mold or the core pulling of a plastic mold according to claim 1, characterized in that: It also includes an installation shell and a cooling fan. The power supply module, the drive control module and the cooling fan are arranged in the installation shell. The power supply end of the cooling fan is connected to the live wire output end and the neutral wire output end of the power supply module. The cooling fan is used to reduce the temperature inside the installation shell.

Images