CN106346732A - Injection molding machine servo control system - Google Patents
Injection molding machine servo control system Download PDFInfo
- Publication number
- CN106346732A CN106346732A CN201610798237.8A CN201610798237A CN106346732A CN 106346732 A CN106346732 A CN 106346732A CN 201610798237 A CN201610798237 A CN 201610798237A CN 106346732 A CN106346732 A CN 106346732A
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- CN
- China
- Prior art keywords
- servo
- control unit
- motor
- pressure
- oil
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76929—Controlling method
- B29C2945/76956—Proportional
- B29C2945/76966—Proportional and integral, i.e. Pl regulation
- B29C2945/76969—Proportional and integral, i.e. Pl regulation derivative and integral, i.e. PID regulation
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an injection molding machine servo control system which comprises an upper computer of an injection molding machine, a master control unit and a division hydraulic circuit. A division control unit which is arranged in the master control unit controls operation of the division hydraulic circuit. The division hydraulic circuit comprises N1 branches. A servo driver, servo motor and oil pump of each branch are in connection sequentially; an inlet of the oil pump is connected with an oil tank while an outlet of the oil pump is connected with an overflow valve; a filter is connected between the oil tank and the overflow valve; the outlet of the oil pump is connected with a solenoid valve group through an oil engine plate, the solenoid valve group is in control connection with a melting motor, an actuating cylinder and a return oil motor respectively, and oil circuit outlets of the melting motor, the actuating cylinder and the return oil motor are merged to be connected between the filter and the overflow valve; the servo driver is connected with the servo motor through a rotary encoder and is connected with the oil pump through a pressure transmitter; the division control unit is in electrical connection with the solenoid valve group and the servo driver of the same branch respectively. The injection molding machine servo control system enables energy saving and consumption reduction.
Description
Technical field
The present invention relates to injection machine energy-saving technical field, more particularly, to a kind of servo control system of injection molding machine.
Background technology
Because market increasingly increases to the demand of plastic cement, promote injection machine fast-developing.In order to dominate the market rapidly, many
Injection machine manufacturer constantly produces the increasing high-performance injection machine of power although employing constant flow paddle pump is injection machine
System provides aerodynamic pressure, but during the injection-molded item time accounts for total cycle time 40～75%, threephase asynchronous machine band
Dynamic dosing pump or variable pump work, part-time allows expense power consumption, can make unnecessary stream during these allow expense
Amount and hydraulic valve internal friction leakage heating, lead to heat exchange so that oil temperature is increased, and temperature rises can allow oily viscosity become again
Dilute, lead to hydraulic pressure to decline, pressure instability, thus allow mechanical precision to reduce.The suitable pressure of offer, flow are provided
Hydraulic oil to meet manufacturing technique requirent, now dosing pump need to provide the type of cooling to lower the temperature, cost increase, phase asynchronous electricity
Machine and dosing pump do a little idle works more, cause substantial amounts of energy waste, reduce precision.
Because plastic injection molding machine can cause substantial amounts of energy waste phenomenon in normal productive process, do not meet energy-conserving and environment-protective
Requirement, therefore we develop and a can meet injection manufacturing technique requirent and again a new generation of energy saving can be molded electro-hydraulic control
System processed is necessary.
Content of the invention
The present invention provides a kind of servo control system of injection molding machine, realizes a set of servo-control system for multiple injection machine liquid
Pressure system meets injection machine and various various processes is required, and can reach energy-saving purpose.
The present invention is to realize above-mentioned technical purpose, employs the following technical solutions:
Servo control system of injection molding machine, the master control communicating with injection machine host computer including injection machine host computer
Unit processed and shunting hydraulic circuit, main control unit includes flow-dividing control unit, flow-dividing control unit controls shunting hydraulic circuit
Work；
Shunting hydraulic circuit includes n1 branch road, each branch road includes servo-driver, plate held up by servomotor, oil pump, oil,
Solenoid valve block, Collosol Motor, action tank, feed back oil motor, rotary encoder, fuel tank, filter, overflow valve and pressure inverting
Device, the servo-driver of each branch road connects servomotor, and servomotor connects oil pump, and the external fuel tank of oil pump inlet, outlet connect
There is overflow valve, between fuel tank and overflow valve, be also connected with filter, the outlet of oil pump connects oil and holds up plate, and oil is held up plate and connected electromagnetic valve
Group, solenoid valve block controls connection Collosol Motor, action tank and feed back oil motor, Collosol Motor, action tank and feed back respectively
The oil circuit delivery outlet of oily motor collaborates to be connected between filter and overflow valve respectively；Servomotor connects rotation by shaft coupling
Coding, the outfan of rotary encoder connects servo-driver；Servo-driver gathers pressure fuel pump letter by pressure transmitter
Number；Described flow-dividing control unit is electrically connected solenoid valve block and the servo-driver of this branch road.
As the improvement to such scheme, the described main control unit of servo control system of injection molding machine also includes collaborating control
Unit, interflow control unit connects interflow hydraulic circuit,
Interflow control unit include pressure closed loop calculation function module, main setup unit, from setting signal allocation unit and
Enable control unit；
Interflow hydraulic circuit includes n2 motor pump branch road, and each branch road includes servo-driver, servomotor, oil
Pump, check valve and rotary encoder, described pressure closed loop calculation function module receives from described injection machine host computer
The main setting signal of pressure, described enable control unit is connected with the servo-driver of n2 motor pump branch road, main setup unit
Connect main servo controller and from setting new model allocation unit, connect from servo controller with each from setting signal allocation unit
Connect；Interflow hydraulic circuit is provided with pressure transducer, and pressure transducer is connected with interflow control unit；
There is mair motor rotating speed, the pressure of also with good grounds injection machine host computer sets in pressure closed loop calculation function module
The pressure feedback signal computing of signal and pressure transducer, try to achieve the program of pressure adjustment signal, and with good grounds pressure signal is asked
The program of winner's motor speed setting signal.
The described speed setting having n2 motor pump branch road motor servo controller from set information allocation unit
Signal and the ratio of mair motor servo controller speed setting information number, and have by mair motor rotary speed setting signal and above-mentioned setting
Certainty ratio tries to achieve the program from setting signal for each servo controller rotating speed；
Described main control unit also includes control model selecting module, is obtained inside servo-driver according to pressure signal
Terminal logic function collaborates control unit work or flow-dividing control cell operation to control.
In improvement project, carry out to pressure mainly for large-scale adapted to injection system.
Beneficial effect
The present invention passes through flow-dividing control pattern, realizes to many set hydraulic systems to pressure, according to the pressure inverting of different branch
The pressure signal of device feeds back to servo-driver, and servo-driver sets pressure signal and feedback pressure by host computer further
Signal is compared and controls servomotor to reach system stability by one stable value of pid output, and servo-driver is not according to
With the different pressure signal parameter of technique setting so that providing suitable flow pressure for many set hydraulic systems, to greatest extent
Using the energy, realize energy-conservation.The present invention, also by the switching between flow-dividing control pattern and interflow control model, realizes common note
Switching between moulding system and large-scale adapted to injection system, provides suitable flow pressure, improves energy utilization rate further, improves section
Energy.
Brief description
Fig. 1 is that the branch structure shunting hydraulic circuit in the servo control system of injection molding machine that the embodiment of the present invention 1 provides shows
It is intended to；
Fig. 2 is the control block diagram between the embodiment 2 injection machine host computer and main control unit that the present invention provides；
Fig. 3 is the work structuring schematic diagram that injection machine host computer of the present invention controls under the control model of interflow.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1, it is the branch road knot shunting hydraulic circuit in the servo control system of injection molding machine that the embodiment of the present invention 1 provides
Structure schematic diagram.
In the present embodiment, servo control system of injection molding machine includes injection machine host computer 100 and the upper calculating of injection machine
The main control unit of machine 100 communication and shunting hydraulic circuit, main control unit includes flow-dividing control unit 101, flow-dividing control list
Unit 101 controls shunting hydraulic circuit work；
Described shunting hydraulic circuit include n1 branch road, each branch road include servo-driver 2, servomotor 3, oil pump 4,
Oil holds up plate 5, solenoid valve block 6, Collosol Motor 7, action tank 8, feed back oil motor 9, rotary encoder 31, fuel tank 11, filter
12nd, overflow valve 41 and pressure transmitter 42, the servo-driver 2 of each branch road connects servomotor 3, and servomotor 3 connects oil
Pump 4, the external fuel tank of oil pump 4 entrance 11, outlet are connected to overflow valve 41, are also connected with filter 12 between fuel tank 11 and overflow valve 41,
The outlet of oil pump 11 connects oil and holds up plate 5, and oil is held up plate 5 and connected solenoid valve block 6, solenoid valve block 6 controls respectively connect Collosol Motor 7,
Action tank 8 and feed back oil motor 9, the oil circuit delivery outlet of Collosol Motor 7, action tank 8 and feed back oil motor 9 collaborates even respectively
It is connected to 41 between filter 12 and overflow valve；Servomotor 3 by shaft coupling connect rotary coding 31, rotary encoder 31 defeated
Go out end and connect servo-driver 2；Servo-driver 2 gathers oil pump 4 pressure signal by pressure transmitter 42；Described flow-dividing control
Unit 121 is electrically connected the solenoid valve block 6 of this branch road and servo-driver 2 so that flow-dividing control unit 121 can obtain often
Pressure signal on bar branch road.
Referring to Fig. 2, it is the control between the embodiment 2 injection machine host computer 100 and main control unit that the present invention provides
Block diagram processed.In the present embodiment, servo control system of injection molding machine includes injection machine host computer 100 and the upper calculating of injection machine
The main control unit of machine 100 communication, shunting hydraulic circuit and interflow control unit 102, main control unit includes flow-dividing control list
Unit 101 and interflow control unit 102, flow-dividing control unit 101 controls shunting hydraulic circuit work, and interflow control unit 102 is even
Engage stream hydraulic circuit.
Wherein, shunting hydraulic circuit is n1 branch structure in embodiment 1.
Referring to Fig. 3, collaborate control unit 102 include pressure closed loop calculation function module, main setup unit, from setting signal
Allocation unit and enable control unit；
Interflow hydraulic circuit includes n2 motor pump branch road, and in this embodiment, n2 is 4, and each branch road includes servo-drive
Device, servomotor, oil pump, check valve 60 and rotary encoder 50, described pressure closed loop calculation function module receives from described
The servo of the main setting signal of pressure of injection machine host computer 100, described enable control unit and n2 motor pump branch road
Driver connects, and main setup unit connects main servo controller and from setting new model allocation unit, distributes single from setting signal
Unit be respectively connected from servo controller；Interflow hydraulic circuit is provided with pressure transducer 70, and pressure transducer 70 is controlled with interflow
Unit 102 connects；
There are mair motor rotating speed, the pressure of also with good grounds injection machine host computer 100 in pressure closed loop calculation function module
The pressure feedback signal computing of setting signal and pressure transducer 70, try to achieve the program of pressure adjustment signal, and with good grounds pressure
Signal tries to achieve the program of mair motor rotary speed setting signal.
The described speed setting having n2 motor pump branch road motor servo controller from set information allocation unit
Signal and the ratio of mair motor servo controller speed setting information number, and have by mair motor rotary speed setting signal and above-mentioned setting
Certainty ratio tries to achieve the program from setting signal for each servo controller rotating speed；
Described main control unit also includes control model selecting module, is obtained inside servo-driver according to pressure signal
To control, interflow control unit 102 works terminal logic function or flow-dividing control unit 101 works.
The above is the preferred embodiment of the present invention it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (2)
1. servo control system of injection molding machine is it is characterised in that include: injection machine host computer and injection machine host computer
The main control unit of communication and shunting hydraulic circuit, main control unit includes flow-dividing control unit, the control point of flow-dividing control unit
Stream hydraulic circuit work；
Shunting hydraulic circuit includes n1 branch road, and each branch road includes servo-driver, servomotor, oil pump, oil hold up plate, electromagnetism
Valve group, Collosol Motor, action tank, feed back oil motor, rotary encoder, fuel tank, filter, overflow valve and pressure transmitter,
The servo-driver of each branch road connects servomotor, and servomotor connects oil pump, and the external fuel tank of oil pump inlet, outlet are connected to excessive
Stream valve, is also connected with filter between fuel tank and overflow valve, the outlet of oil pump connects oil and holds up plate, and oil is held up plate and connected solenoid valve block, electricity
Magnet valve group controls connection Collosol Motor, action tank and feed back oil motor, Collosol Motor, action tank and feed back oil motor respectively
Oil circuit delivery outlet collaborate respectively to be connected between filter and overflow valve；Servomotor connects rotary coding by shaft coupling,
The outfan of rotary encoder connects servo-driver；Servo-driver gathers pressure fuel pump signal by pressure transmitter；Institute
State solenoid valve block and the servo-driver that flow-dividing control unit is electrically connected this branch road.
2. servo control system of injection molding machine as claimed in claim 1 is it is characterised in that described main control unit also includes collaborating
Control unit, interflow control unit connects interflow hydraulic circuit,
Interflow control unit include pressure closed loop calculation function module, main setup unit, from setting signal allocation unit and enable
Control unit；
Interflow hydraulic circuit includes n2 motor pump branch road, and each branch road includes servo-driver, servomotor, oil pump, list
To valve and rotary encoder, described pressure closed loop calculation function module receives the pressure master from described injection machine host computer
Setting signal, described enable control unit is connected with the servo-driver of n2 motor pump branch road, and main setup unit connects master
Servo controller and from set new model allocation unit, from setting signal allocation unit be respectively connected from servo controller；Interflow
Hydraulic circuit is provided with pressure transducer, and pressure transducer is connected with interflow control unit；
There are mair motor rotating speed, the pressure setting signal of also with good grounds injection machine host computer in pressure closed loop calculation function module
Pressure feedback signal computing with pressure transducer, try to achieve the program of pressure adjustment signal, and with good grounds pressure signal tries to achieve master
The program of motor speed setting signal.
The described rotary speed setting signal having n2 motor pump branch road motor servo controller from set information allocation unit
With the ratio of mair motor servo controller speed setting information number, and have by mair motor rotary speed setting signal and above-mentioned setting ratio
Example tries to achieve the program from setting signal for each servo controller rotating speed；
Described main control unit also includes control model selecting module, obtains the terminal inside servo-driver according to pressure signal
Logic function collaborates control unit work or flow-dividing control cell operation to control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798237.8A CN106346732A (en) | 2016-08-31 | 2016-08-31 | Injection molding machine servo control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798237.8A CN106346732A (en) | 2016-08-31 | 2016-08-31 | Injection molding machine servo control system |
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| Publication Number | Publication Date |
|---|---|
| CN106346732A true CN106346732A (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610798237.8A Pending CN106346732A (en) | 2016-08-31 | 2016-08-31 | Injection molding machine servo control system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201471698U (en) * | 2009-07-30 | 2010-05-19 | 桂林星辰科技有限公司 | Energy saving servo hydraulic control system of injection machine |
| CN204712400U (en) * | 2015-05-28 | 2015-10-21 | 东莞市绿能环保节能科技有限公司 | The asynchronous energy-saving servo integrated control system of an injection moulding group of planes |
| CN105313285A (en) * | 2014-07-17 | 2016-02-10 | 淮安市吉达塑料机械有限公司 | Novel injection machine control system |
| CN206106308U (en) * | 2016-08-31 | 2017-04-19 | 广州珠峰电气股份有限公司 | Servo control system of injection molding machine |
-
2016
- 2016-08-31 CN CN201610798237.8A patent/CN106346732A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201471698U (en) * | 2009-07-30 | 2010-05-19 | 桂林星辰科技有限公司 | Energy saving servo hydraulic control system of injection machine |
| CN105313285A (en) * | 2014-07-17 | 2016-02-10 | 淮安市吉达塑料机械有限公司 | Novel injection machine control system |
| CN204712400U (en) * | 2015-05-28 | 2015-10-21 | 东莞市绿能环保节能科技有限公司 | The asynchronous energy-saving servo integrated control system of an injection moulding group of planes |
| CN206106308U (en) * | 2016-08-31 | 2017-04-19 | 广州珠峰电气股份有限公司 | Servo control system of injection molding machine |
Non-Patent Citations (4)
| Title |
|---|
| 李方圆: "《变频器行业应用实践》", 31 May 2006 * |
| 王以伦: "《液压传动》", 30 April 2005 * |
| 聂国伦等: "《电机与控制》", 30 April 2011 * |
| 陈星等: "《机械制造工艺学原理与技术研究》", 30 June 2014 * |
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Application publication date: 20170125 |