CN101870159A - Servo energy-saving device of injection molding machine and energy saving method - Google Patents
Servo energy-saving device of injection molding machine and energy saving method Download PDFInfo
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- CN101870159A CN101870159A CN 201010215521 CN201010215521A CN101870159A CN 101870159 A CN101870159 A CN 101870159A CN 201010215521 CN201010215521 CN 201010215521 CN 201010215521 A CN201010215521 A CN 201010215521A CN 101870159 A CN101870159 A CN 101870159A
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Abstract
The invention provides a servo energy-saving device of an injection molding machine, which comprises an injection molding machine control system, a servo driver, a servo motor, a pressure sensor and a gear pump, wherein the injection molding machine control system is connected with the servo driver; the servo driver is connected with and controls the servo motor; the servo motor is connected with the gear pump; the gear pump is connected with the injection molding machine; and the pressure sensor is connected with the injection molding machine and the servo driver respectively. The energy-saving method comprises that: the injection molding machine control system transmits a pressure and flow instruction to the servo driver; the servo driver converts the pressure and flow instruction into a rotating speed instruction and transmits the rotating speed instruction to the servo motor; the servo motor drives the gear pump to rotate; the gear pump outputs a pressure and a flow according to the instruction; the pressure sensor acquires the pressure of the injection molding machine and feeds the pressure back to the servo driver; the servo motor feeds a rotating speed back to the servo driver; the servo driver feeds the actual pressure and the actual flow back to the injection molding machine control system; and the injection molding machine control system compares the actual flow and the actual pressure with an instructed flow and an instructed pressure to regulate the instructed flow and the instructed pressure to realize closed loop control.
Description
Technical field
The present invention relates to a kind of injection machine energy-saving servo device and power-economizing method, is the key technology that injection machine is realized energy-saving servo.
Background technology
Propose to build energy-efficient society with country, advocate the low-carbon (LC) green living, the energy-conservation requirement of injection machine is had higher requirement.
And having injection machine now mainly based on Constant Pump System, variable pump systems, the power source motor of this type systematic is a threephase asynchronous, regardless of working condition requirement, all with the constant rotational speed running, must cause huge energy waste after motor is opened.
Summary of the invention
In order to overcome above-mentioned technical problem, the invention provides a kind of injection machine energy-saving servo device, comprise control system for shot machine, servo-driver, servomotor, pressure sensor, gear pump, control system for shot machine connects servo-driver, servo-driver connects the control servomotor, servomotor is connected with gear pump, and gear pump is connected with injection machine, and pressure sensor is connected with servo-driver with injection machine respectively.
Preferably, described servomotor and gear pump are fixed on the motor cabinet, and servomotor is connected by shaft coupling with gear pump.
Preferably, described shaft coupling is that lightweight does not have the gap shaft coupling.
Preferably, described gear pump is a crescent gear pump.
A kind of power-economizing method of injection machine energy-saving servo device, control system for shot machine sends pressure, flow instruction is given servo-driver, servo-driver is converted to rotary speed instruction and gives servomotor, the rotation of servomotor driven gear pump, gear pump is promptly by the instruction output pressure, flow, pressure sensor is gathered the injection machine pressure feedback to servo-driver, servomotor feedback rotating speed is given servo-driver, servo-driver feeds back to control system for shot machine to actual pressure and flow, control system for shot machine is to actual flow, pressure and instruction flow, pressure compares processing, thereby adjust instruction flow and pressure, realize closed-loop control.
Key point of the present invention is to select suitable servo-drive system for injection machine: here we have changed the method for the power configuration of design injection machine, directly require out to send selection injection machine power configuration from goods, injection molding each step of goods is listed pressure, flow, time requirement on demand, calculate the actual desired power of each step as requested, calculate the power in whole cycle again, select the servo power configuration on this basis.The method has strengthened the power requirement clear and definite from each step details, makes the power requirement not only satisfy the production of articles requirement, and is just to satisfy the production of articles requirement, from source control energy waste, reaches energy-saving effect.
Description of drawings:
Fig. 1 is this part structural relation figure of the present invention;
Fig. 2 is the connection diagram of servomotor and crescent gear pump in the specific embodiment;
Fig. 3 is the target product cycle parameter figure of specific embodiment.
The specific embodiment:
In conjunction with the accompanying drawings, below the present invention is further described.
The equipment main composition:
As Fig. 1: servomotor, motor cabinet, lightweight do not have gap shaft coupling, crescent gear pump, described servomotor is fixed on the motor cabinet by screw, described gear pump is fixed on the motor cabinet by screw, and the servomotor of telling does not have the gap shaft coupling with gear pump by lightweight and is connected.
As Fig. 2: injection machine, control system for shot machine, servomotor, pressure sensor, gear pump, servo-driver, described injection machine is the target device of this patent, described control system for shot machine is installed on the injection machine, each action of control injection machine, described servomotor, gear pump are installed on the injection machine after by connection shown in Figure 1, described pressure sensor is installed on the injection machine, described servo-driver is installed on the injection machine, and described control system for shot machine, servomotor, servo controller, pressure sensor connect transmission information by all kinds of cables.Described information comprises: pressure, flow, rotating speed.
As Fig. 3: a kind of target product cycle parameter, the main course of action of injection machine comprises that matched moulds, She Tai advance, injection, colloidal sol, cooling, opening, thimble, She Tai move back.Described mould assembling action comprises: close (matched moulds fast), mould guarantor, locked mode soon, described injection action comprises: injection, pressurize 1, pressurize 2, each moves the setup parameter in the course of action, comprise pressure (bar of unit), the flow (relative discharge of total flow, the m1/s of unit), time (duration, unit second), power (according to pressure flow Time Calculation gained, the kw of unit), moment of torsion (respectively move required torque (Nm of unit).
Be the once required time of product molding described cycle time; Described cycle mean power is meant the mean power in the molding cycle time; Described cycle peak power is meant the maximum power demand that occurs in the molding cycle time; Described rated power is meant the rated power of the servo-drive system that we select; Described peak power is meant the peak power of the servo-drive system that we select; Described cycle average torque is meant a molding cycle in the time, the moment of torsion mean value of each action; Described peak torque is meant a molding cycle in the time, the peak torque that occurs in each action; The nominal torque of being told is meant the nominal torque that servo-drive system that we select can provide; Described peak torque is meant the peak torque that servo-drive system that we select can provide.
The course of work:
Control system for shot machine sends P pressure, the Q flow instruction is given servo-driver, servo-driver is converted to rotary speed instruction and gives servomotor, the rotation of servomotor driven gear pump, gear pump is promptly by instruction output pressure flow, pressure sensor acquisition system pressure feedback is to servo-driver, servomotor feedback rotating speed is given servo-driver, servo-driver feeds back to control system for shot machine to actual pressure and flow by conversion, control system for shot machine is to actual flow, pressure and instruction flow, pressure compares processing, thereby adjust instruction flow and pressure, realize closed-loop control.
This servo-drive system response speed reaches the response speed of 0.02ms much larger than variable pump 0.3ms, makes that control accuracy improves greatly.
We can see from the above:
1, our foundation is the power and the torque demand of each action in the whole product molding process on power configuration, rather than disposes by peak power, torque demand in the traditional power configuration, and this is that this patent realizes energy-conservation theoretical foundation.
2, in order to realize the independent power configuration to each action, our dynamical system is each action to be realized the servo-drive system of closed-loop control, and this makes the power of each action dispose separately and is achieved.
Must emphasize that 3, what use in this dynamical system is servomotor and servo-driver, with traditional frequency conversion control technique the difference of essence be arranged, the response time of servomotor and servo-driver and control accuracy and stability are much larger than frequency conversion control technique.
At last, it is also to be noted that what more than enumerate only is specific embodiments of the invention, obviously, the invention is not restricted to above examples of implementation, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (5)
1. injection machine energy-saving servo device, it is characterized in that: comprise control system for shot machine, servo-driver, servomotor, pressure sensor, gear pump, control system for shot machine connects servo-driver, servo-driver connects the control servomotor, servomotor is connected with gear pump, gear pump is connected with injection machine, and pressure sensor is connected with servo-driver with injection machine respectively.
2. injection machine energy-saving servo device according to claim 1, it is characterized in that: described servomotor and gear pump are fixed on the motor cabinet, and servomotor is connected by shaft coupling with gear pump.
3. injection machine energy-saving servo device according to claim 2 is characterized in that: described shaft coupling is that lightweight does not have the gap shaft coupling.
4. injection machine energy-saving servo device according to claim 1 and 2 is characterized in that: described gear pump is a crescent gear pump.
5. the power-economizing method of an injection machine energy-saving servo device as claimed in claim 1, it is characterized in that: control system for shot machine sends pressure, flow instruction is given servo-driver, servo-driver is converted to rotary speed instruction and gives servomotor, the rotation of servomotor driven gear pump, gear pump is promptly by the instruction output pressure, flow, pressure sensor is gathered the injection machine pressure feedback to servo-driver, servomotor feedback rotating speed is given servo-driver, servo-driver feeds back to control system for shot machine to actual pressure and flow, control system for shot machine is to actual flow, pressure and instruction flow, pressure compares processing, thereby adjust instruction flow and pressure, realize closed-loop control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010215521 CN101870159A (en) | 2010-06-29 | 2010-06-29 | Servo energy-saving device of injection molding machine and energy saving method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010215521 CN101870159A (en) | 2010-06-29 | 2010-06-29 | Servo energy-saving device of injection molding machine and energy saving method |
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| CN101870159A true CN101870159A (en) | 2010-10-27 |
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| CN 201010215521 Pending CN101870159A (en) | 2010-06-29 | 2010-06-29 | Servo energy-saving device of injection molding machine and energy saving method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975345A (en) * | 2012-12-01 | 2013-03-20 | 揭阳市顺嘉利塑胶实业有限公司 | Power-saving control process for hot-working and forming of plastic |
| CN106884832A (en) * | 2017-04-14 | 2017-06-23 | 上海铖杏自动化控制技术有限公司 | A kind of electrohydraulic servo system |
| CN107336403A (en) * | 2017-06-27 | 2017-11-10 | 连云港师范高等专科学校 | A kind of injection machine servo-drive and control system |
| CN109414858A (en) * | 2016-07-20 | 2019-03-01 | 圣万提注塑工业（苏州）有限公司 | Injection molding apparatus and method for the injection of automatic cycle chamber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986196A (en) * | 2005-12-22 | 2007-06-27 | 因诺伊克斯有限责任公司 | Calibration sleeve for extruded plastic pipes |
| CN201816198U (en) * | 2010-06-29 | 2011-05-04 | 泰瑞机器制造(中国)有限公司 | Servo energy-saving device of injection molding machine |
-
2010
- 2010-06-29 CN CN 201010215521 patent/CN101870159A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986196A (en) * | 2005-12-22 | 2007-06-27 | 因诺伊克斯有限责任公司 | Calibration sleeve for extruded plastic pipes |
| CN201816198U (en) * | 2010-06-29 | 2011-05-04 | 泰瑞机器制造(中国)有限公司 | Servo energy-saving device of injection molding machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975345A (en) * | 2012-12-01 | 2013-03-20 | 揭阳市顺嘉利塑胶实业有限公司 | Power-saving control process for hot-working and forming of plastic |
| CN109414858A (en) * | 2016-07-20 | 2019-03-01 | 圣万提注塑工业（苏州）有限公司 | Injection molding apparatus and method for the injection of automatic cycle chamber |
| CN109414858B (en) * | 2016-07-20 | 2021-03-26 | 圣万提注塑工业（苏州）有限公司 | Injection molding apparatus and method for automatic recirculating cavity injection |
| CN106884832A (en) * | 2017-04-14 | 2017-06-23 | 上海铖杏自动化控制技术有限公司 | A kind of electrohydraulic servo system |
| CN107336403A (en) * | 2017-06-27 | 2017-11-10 | 连云港师范高等专科学校 | A kind of injection machine servo-drive and control system |
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Application publication date: 20101027 |