CN201645776U - Injection molding machine controlled by servo motor and comprising double-grade piston pump - Google Patents

Injection molding machine controlled by servo motor and comprising double-grade piston pump Download PDF

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Publication number
CN201645776U
CN201645776U CN2009202920953U CN200920292095U CN201645776U CN 201645776 U CN201645776 U CN 201645776U CN 2009202920953 U CN2009202920953 U CN 2009202920953U CN 200920292095 U CN200920292095 U CN 200920292095U CN 201645776 U CN201645776 U CN 201645776U
Authority
CN
China
Prior art keywords
injection molding
molding machine
hydraulic
control
double
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009202920953U
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Chinese (zh)
Inventor
徐峻
周清华
莫品荣
黄土荣
邵国
胡红岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BORCH MACHINERY CO., LTD.
Original Assignee
GUANGZHOU BORCHE MACHINERY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGZHOU BORCHE MACHINERY CO Ltd filed Critical GUANGZHOU BORCHE MACHINERY CO Ltd
Priority to CN2009202920953U priority Critical patent/CN201645776U/en
Application granted granted Critical
Publication of CN201645776U publication Critical patent/CN201645776U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an injection molding machine controlled by a servo motor and comprising a double-grade piston pump, which comprises a double-grade piston pump servo power control system, thereby being capable of adjusting the pressure and the flowrate of a hydraulic system in real time according the work condition of the total injection molding machine, leading the injection molding machine to most correctly accord with practical needing of a system. The extremely low leakage amount and the double displacement output of the double-grade piston pump avoid power loss in maximum limit, thereby saving the energy of the total injection molding machine. The control precision of the injection molding machine is increases through a closed-loop control system, and the response is more rapid. Various work conditions of the injection molding machine can be rapidly and steadily switched through using a filter and a braking resistor, and the hydraulic impact is reduced. The injection molding machine reduces the heating amount of hydraulic oil of a hydraulic system and system noise, prolongs the service life of the motor, an oil pump and hydraulic elements, and effectively reduces the leakage phenomenon of the hydraulic system.

Description

The injection machine that comprises the twin-stage plunger displacement pump by servomotor control
Affiliated technical field
The utility model relates to a kind of injection machine that comprises the twin-stage plunger displacement pump by servomotor control of practicality.
Background technology
Now the hydraulic power system of injection machine is generally by normal asynchronous, drive pressure and the flow that constant displacement pump or variable pump are controlled whole hydraulic system by normal asynchronous, but its energy consumption is higher, and control accuracy is relatively poor.
The mode that existing Servo Injection Molding Machine adopts servomotor to drive quantitative gear pump is controlled, but because its oil pump has adopted constant displacement pump, under the certain situation of discharge capacity and pressure, only reach energy-saving effect by the rotating speed that changes servomotor, its rotary inertia is bigger like this, and the energy consumption of servomotor can be bigger than normal, and the model of servo-driver needs bigger, the long-time pressure maintaining performance of injection machine is stable inadequately, difficult suitable full-bodied plastic product forming requirement.
Summary of the invention
Technical problem to be solved in the utility model: overcome the above-mentioned deficiency of prior art and a kind of new injection machine is provided, when just it can cut down the consumption of energy greatly, guarantee stable pressure maintaining performance and lower servo-driver power progression, save cost.
The technical scheme that its technical problem that solves the utility model adopts is:
By the injection machine that comprises the twin-stage plunger displacement pump of servomotor control, produce pressure, flow by driven by servomotor twin-stage plunger displacement pump; Controller of plastic injection molding outputs to signal P, Q to servo-driver in the described control loop, hydraulic pressure sensor and rotary transformer are given to servo-driver with feedback signal, servo-driver is handled moment of torsion and the rotating speed of exporting corresponding signal controlling servomotor with above-mentioned signal, forms the stepless closed-loop control system of PQ; Automatically judge its operating mode by parameters such as monitoring output current of servo-driver and rotating speeds, two-position four-way solenoid valve under corresponding operating mode in the control twin-stage plunger displacement pump gets electric, realizes the twin-stage control model: high pressure low discharge output control and low pressure and mass flow output control; Realize the accurate, steady of hydraulic system pressure, flow controlled by braking resistor; Wave filter is installed for servo electrical system provides the clean stable energy in the electrical system, is guaranteed to avoid when system works is stable the power supply environment produced and disturb, not only energy-conservation but also environmental protection.
The beneficial effects of the utility model:
1. the use of twin-stage plunger displacement pump is fit to injection machine high pressure low discharge, the demand of low pressure and mass flow output, by closed-loop control system and servo-driver control servomotor rotating speed and moment of torsion, make whole hydraulic injection molding machine system can export suitable power as required, so energy consumption reduce greatly;
2. the motor speed the when utmost point low leakage of twin-stage plunger displacement pump and high responsiveness further reduce injection machine pressurize, cooling, thus further cut down the consumption of energy; Longer performance of dwell time was more stable when the double amount control of twin-stage plunger displacement pump allowed the injection machine low energy consumption;
3. the application by wave filter and braking resistor makes Hydrauservo System quick and stable transition in the process that pressure, flow high frequency change, and greatly reduces hydraulic shock;
4. the power of its system's reduction servo-driver and related electric needs, and saves cost.
5. closed-loop control system has improved the complete machine control accuracy, and noise and caloric value when having reduced the injection pressurize prolong hydraulic system and servo-controlled service life.
Description of drawings
Fig. 1 is injection machine dynamical system of the present utility model and close loop control circuit figure;
Fig. 2 is the front view of twin-stage plunger displacement pump in the utility model+servomotor control.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the injection machine that comprises the twin-stage plunger displacement pump by servomotor control, comprise oil pump (1), motor (2), rotary transformer (3), servo-driver (4), wave filter (5), braking resistor (6) that power is provided to machine in the dynamic Control loop, drive twin-stage plunger-type fuel pump (1) by servomotor (2) and produce pressure, flow; Controller of plastic injection molding outputs to signal P, Q to servo-driver (4), hydraulic pressure sensor (7) is given to servo-driver (4) with rotary transformer (3) with feedback signal, servo-driver (4) is handled moment of torsion and the rotating speed of exporting corresponding signal controlling servomotor with above-mentioned signal, forms the stepless closed-loop control system of PQ; Output current and parameter such as rotating speed by monitoring servo-driver (4) are judged its operating mode automatically, two-position four-way solenoid valve (10) under corresponding operating mode in the control twin-stage plunger displacement pump (1) gets electric, realizes the twin-stage control model: high pressure low discharge output control and low pressure and mass flow output are controlled; Realize the accurate, steady of hydraulic system pressure, flow controlled by braking resistor (6); Wave filter (5) is installed in the electrical system is provided the clean stable energy, guarantee to avoid when system works is stable the power supply environment produced and disturb, not only energy-conservation but also environmental protection for servo electrical system.
As shown in Figure 2, the injection machine that comprises the twin-stage plunger displacement pump by servomotor control, twin-stage plunger displacement pump (1) links up by spline and servomotor (2), when pressurize needs the output of high pulling torque low discharge, get the electric oil pump (1) that makes and switch to little discharge capacity by two-position four-way solenoid valve (11) received signal, so more save, dwell time is longer more stable, and can reduce the power model of servo-driver.
Operation principle
This utility model has comprised above-mentioned servo power control system by the injection machine that comprises the twin-stage plunger displacement pump of servomotor control, therefore can adjust the pressure and the flow of hydraulic system in real time according to the operating mode of whole injection machine, make it the most appropriate meet the actual required of system, the extremely low leakage of oil amount and the double amount merit level of twin-stage plunger displacement pump have been avoided power attenuation to greatest extent, thereby have saved the energy of whole injection machine.By closed-loop control system the control accuracy of injection machine is improved, respond faster.The stationarity that application by wave filter and braking resistor is switched the operating mode of injection machine fast reduces hydraulic shock.And reduced the fluid caloric value and the noise of hydraulic system, prolonged the service life of motor, oil pump and Hydraulic Elements.

Claims (2)

1. by the injection machine that comprises the twin-stage plunger displacement pump of servomotor control, it is characterized in that: described oil pump (1) is the twin-stage plunger displacement pump, motor (2) is a servomotor, described servo-driver (4), pressure sensor (7), rotary transformer (3) and oil pump (1), motor (2) closed-loop control are realized the twin-stage control model: high pressure low discharge output control and low pressure and mass flow output control; Described braking resistor (6) realizes accurate, the steadily control of hydraulic system pressure, flow, and wave filter (5) provides the clean stable energy for servo electrical system.
2. the injection machine that comprises the twin-stage plunger displacement pump by servomotor control as claimed in claim 1 is characterized in that: the twin-stage plunger displacement pump adopts two-position four way change valve (10).
CN2009202920953U 2009-12-18 2009-12-18 Injection molding machine controlled by servo motor and comprising double-grade piston pump Expired - Fee Related CN201645776U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202920953U CN201645776U (en) 2009-12-18 2009-12-18 Injection molding machine controlled by servo motor and comprising double-grade piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202920953U CN201645776U (en) 2009-12-18 2009-12-18 Injection molding machine controlled by servo motor and comprising double-grade piston pump

Publications (1)

Publication Number Publication Date
CN201645776U true CN201645776U (en) 2010-11-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202920953U Expired - Fee Related CN201645776U (en) 2009-12-18 2009-12-18 Injection molding machine controlled by servo motor and comprising double-grade piston pump

Country Status (1)

Country Link
CN (1) CN201645776U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102582054A (en) * 2011-01-12 2012-07-18 广州博创机械有限公司 Power system of large-sized servo injection molding machine
CN103527438A (en) * 2012-07-04 2014-01-22 北京精密机电控制设备研究所 Integrated motor pump for hydraulic system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102582054A (en) * 2011-01-12 2012-07-18 广州博创机械有限公司 Power system of large-sized servo injection molding machine
CN103527438A (en) * 2012-07-04 2014-01-22 北京精密机电控制设备研究所 Integrated motor pump for hydraulic system
CN103527438B (en) * 2012-07-04 2016-06-01 北京精密机电控制设备研究所 A kind of integrate motor pump for hydraulic efficiency system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Zhejiang Bochuang Machinery Co., Ltd.

Assignor: Guangzhou Borche Machinery Co., Ltd.

Contract record no.: 2011330000343

Denomination of utility model: Injection molding machine controlled by servo motor and comprising double-grade piston pump

Granted publication date: 20101124

License type: Exclusive License

Record date: 20110427

Assignee: Zhejiang Bochuang Machinery Co., Ltd.

Assignor: Guangzhou Borche Machinery Co., Ltd.

Contract record no.: 2011330000343

Denomination of utility model: Injection molding machine controlled by servo motor and comprising double-grade piston pump

Granted publication date: 20101124

License type: Exclusive License

Record date: 20110427

C56 Change in the name or address of the patentee

Owner name: BORCHE MACHINERY CO., LTD.

Free format text: FORMER NAME: GUANGZHOU BOCHUANG MACHINERY CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee after: Borch Machiney Co., Ltd.

Address before: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee before: Guangzhou Borche Machinery Co., Ltd.

Address after: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee after: Borch Machiney Co., Ltd.

Address before: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee before: Guangzhou Borche Machinery Co., Ltd.

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee after: BORCH MACHINERY CO., LTD.

Address before: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee before: Borch Machiney Co., Ltd.

Address after: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee after: BORCH MACHINERY CO., LTD.

Address before: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9

Patentee before: Borch Machiney Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101124

Termination date: 20181218