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Dual-motor parallel injection control method of electric injection molding machine

A control method and technology for an injection molding machine, applied in the field of dual-motor parallel injection control, can solve the problems of difficulty in meeting the injection process, large system inertia, and high output torque, and achieve the effects of meeting the requirements of injection conditions, improving response performance, and reducing inertia.

Active Publication Date: 2014-03-12
NINGBO ZHAFIR PLASTICS MACHINERY
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Problems solved by technology

When the large-scale development of electric injection molding machines reaches a certain level, the high-power servo motors and servo drivers are restricted by the manufacturing process, especially the structure of high-power servo motors is large and the system inertia is also very large, which is difficult to achieve in terms of performance. Meet the normal injection process (fast response, high output torque) requirements

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  • Dual-motor parallel injection control method of electric injection molding machine
  • Dual-motor parallel injection control method of electric injection molding machine
  • Dual-motor parallel injection control method of electric injection molding machine

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] A dual-motor parallel injection control method for an electric injection molding machine, comprising a controller 1, a master driver 2, a slave driver 3, a master servo motor 4, a slave servo motor 5, a master encoder installed in the master servo motor 4, and a master encoder installed in the From the slave encoder in the servo motor 5, the controller 1 is connected to the main driver 2 through the first communication bus 6, the controller 1 is connected to the slave driver 3 through the second communication bus 7, and the main driver 3 is connected to the main servo motor 4. Slave driver 3 is connected with servomotor 5, and the master encoder that is installed in the master servomotor 4 is connected with the main shaft of main servomotor 4, and the slave encoder that is installed in the servomotor 5 is connected with the main shaft fr...

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Abstract

The invention discloses a dual-motor parallel injection control method of an electric injection molding machine. The dual-motor parallel injection control method comprises the steps that the controller establishes a motion model through reading a set process parameter, and sends speed and torque parameter instructions to a master driver and a slave driver respectively; the two drivers respectively output frequency and current according to the instructions of the controller to drive servo motors to execute actions. The controller balances output torque of the two servo motors by controlling the two drivers to ensure that the torque of the two servo motors is overlapped. Meanwhile, the controller ensures that a system achieves speed synchronization through speed control on the master driver and driving of a synchronization belt between the two servo motors. The dual-motor parallel injection control method has the advantages of reducing the cost and lowering the inertia of the servo motors.

Description

technical field [0001] The invention relates to an injection control method for an electric injection molding machine, in particular to a dual-motor parallel injection control method for an electric injection molding machine. Background technique [0002] The injection part of the existing electric injection molding machine uses a single servo drive and a single servo motor to control the injection and ejection of the screw. Due to the working conditions of injection parts, there are the following characteristics: [0003] 1. Injection, the screw performs the injection action, and squeezes the molten plastic particles into the mold cavity until the mold cavity is filled with the melt. [0004] 2. Holding pressure, the screw continues to move forward after the cavity is full, and the compression of the raw material generates a holding pressure. At this time, the screw speed is basically close to zero. [0005] In the above two motion conditions, the injection servo motor r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/77
CPCB29C45/77B29C2945/76511B29C2945/76605B29C2945/76692B29C2945/76859B29C2945/76936B29C2945/76939
Inventor 傅南红朱宁迪朱淦
Owner NINGBO ZHAFIR PLASTICS MACHINERY
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