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Ejection molding machine

一种成型机、微控制器的技术，应用在电动发电机控制、直流电动机的减速装置、电机/发电机/变频器限位器等方向，能够解决直流链路电压升高、浪费电能、不易控制等问题，达到提高加热效率的效果

Inactive Publication Date: 2010-06-09
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the motor decelerates, it will generate regenerative power, which will increase the voltage of the DC link in the motor drive circuit. The traditional motor drive circuit will use the regenerative resistor to consume the regenerative power and consume it in the form of heat, but This method wastes power and increases the ambient temperature of the motor drive circuit
Another method is to feed back the recovered electric energy to the mains through an inverter (Inverter), but this method must add many components to the motor drive circuit, and it is not easy to control

Method used

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  • Ejection molding machine
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Examples

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Embodiment Construction

[0009] Please refer to figure 1 The motor drive circuit part of the preferred embodiment of the injection molding machine of the present invention includes a power connector 10, a rectifier circuit 20, a switch control circuit 30, a DC link 40, an inverter circuit 50, and a heater 60 And a microcontroller 70. The power connector 10 is used to connect an external three-phase AC power supply (not shown) to receive the working voltage. The inverter circuit 50 is used to connect a motor 80 (multiple motors can also be connected, this embodiment only uses one motor as an example) to drive the motor 80 to work.

[0010] The rectifier circuit 20 is used to convert the three-phase alternating current from the power connector 10 into direct current, and it includes six diodes D1-D6. The first terminal R, the second terminal S, and the third terminal T of the power connector 10 are respectively connected to the anodes of the diodes D1-D3 and to the cathodes of the diodes D4-D6. The catho...

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PUM

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Abstract

The invention relates to an ejection molding machine which comprises a motor drive circuit for driving a motor, wherein the motor drive circuit comprises a switch control circuit, a direct current link circuit, an inverted circuit and a microcontroller; the switch control circuit is connected with a heater for preheating an ejected material; rising electric energy generated by the motor during speed reduction is fed back to the direct current link circuit by the inverted circuit; the direct current link circuit inputs a control signal to the microcontroller according to the rising electric energy; and the microcontroller controls the switch control circuit to be conducted according to the control signal so that the rising electric energy is supplied to the heater to preheat the ejected material. The ejection molding machine can effectively preheat the ejected material by utilizing the recycled electric energy generated by the motor.

Description

Technical field [0001] The invention relates to an injection molding machine. Background technique [0002] In the injection molding machine, the motor is used as the power source to drive the mechanical moving components in the injection molding machine. For the motor drive circuit, the motor is often driven to accelerate or decelerate to achieve the control of the mechanical moving components. When the motor decelerates, it will generate rebound electrical energy. This rebound electrical energy will increase the voltage of the DC link in the motor drive circuit. Traditional motor drive circuits use rebound resistors to consume this rebound electrical energy and consume it in the form of heat. This method wastes electrical energy and increases the ambient temperature of the motor drive circuit. Another method is to use an inverter (Inverter) to feed back the recovered electric energy to the mains. However, this method must add many components to the motor drive circuit and is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76B29C45/74H02P3/18
CPCH02P3/14B29C45/7666B29C2045/1792B29C2045/7673Y02P70/10
Inventor 李威骏
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD