Injection moulding machine servo energy-saving control system

An energy-saving control system and injection molding machine technology, applied in the field of servo energy-saving control systems, can solve the problems of poor control effect, poor applicability, and poor energy-saving effect, and achieve the effects of reduced heat generation, good applicability, and reduced energy loss

CN101100105AInactive Publication Date: 2008-01-09CHANGSHENGDA MASCH ZHEJIANG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-01-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The energy-saving servo control system for injection molding machine includes one servo motor, one constant displacement oil pump providing pressure to the hydraulic system, one pressure sensor, one rotation speed sensor, and one control element, as well as one energy-saving controller connected to the outputs of the pressure sensor and the rotation speed sensor for automatic closed-loop regulation of pressure and flow rate. The servo motor includes one torque regulating input and one rotation speed regulating input; the energy-saving controller includes one pressure control module and one flow rate control module with outputs connected to the servo controller; the servo controller includes one torque driving unit and one rotation speed driving unit connected separately to the torque regulating input and the rotation speed regulating input of the servo motor. The energy-saving servo control system has high adaptability, high sensitivity, high accuracy and high energy-saving effect.
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Description

(1) Technical field

[0001] The invention relates to the field of injection molding machines, in particular to a servo energy-saving control system for injection molding machines. (2) Background technology

[0002] The existing energy-saving control of injection molding machines is usually achieved by using frequency converters or variable displacement pumps, or by controlling motors. The energy-saving control effect of frequency converters is relatively poor, and energy-saving control cannot be realized at low speeds.

[0003] For example, the Chinese patent application number is: 200610155035.8, and the name of the invention is a servo energy-saving injection molding machine, including a hydraulic control circuit, an oil pump that supplies pressure to the hydraulic system, a motor that drives the oil pump, and a control system that controls the motor. The motor is a permanent magnet synchronous servo motor. The shaft is directly connected to the shaft of the oil pump. The c...

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Referring to Figures 2 to 5, a servo energy-saving control system for an injection molding machine includes a servo motor 1, a quantitative oil pump 2 for providing pressure to a hydraulic system, a pressure detection sensor 3, a rotational speed sensor 4, and a control element 5. The servo motor 1 With a servo controller 6, the output of the servo motor 1 is connected to the quantitative oil pump 2, the output of the quantitative oil pump 2 is connected to the control element 5, the pressure detection sensor 3 is installed on the oil circuit output by the quantitative oil pump, and the rotational speed The sensor 4 is installed in the servo motor 1, and the control system also includes an energy-saving controller 7 for realizing automatic closed-loop adjustment of pressure and flow, and the output of the pressure detection sensor 3 and the rotational speed senso...