CN106738739A - A kind of control system and its method of electro-hydraulic mixed injection moulding machine - Google Patents
A kind of control system and its method of electro-hydraulic mixed injection moulding machine Download PDFInfo
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- CN106738739A CN106738739A CN201611240762.4A CN201611240762A CN106738739A CN 106738739 A CN106738739 A CN 106738739A CN 201611240762 A CN201611240762 A CN 201611240762A CN 106738739 A CN106738739 A CN 106738739A
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- Prior art keywords
- servomotor
- servo
- driver
- plc
- control
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- 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
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- 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
-
- 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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
-
- 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
- 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
- B29C45/84—Safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of control system and its method of electro-hydraulic mixed injection moulding machine, it includes：PLC, servo-driver, the first servomotor, the second servomotor, I O board；The PLC is used to control the operation of injection machine；The servo-driver is used to control the operation of the first servomotor and the second servomotor；The I O board is the integrated mainboard of I/O interface, and the I O board connects servo-driver and PLC with bus form；Wherein, PLC assigns instruction to servo-driver by I O board；Operation of the servo-driver according to instruction control oil pump and servomotor.The present invention makes the stability of injection machine more preferable, repeated more preferable；Compared to full electric injection molding machine control system compared to longer service life；Compared with all-hydraulic control system for shot machine, the product of present invention processing has precision higher, and the noise produced during injection machine operation is more small.
Description
Technical field
The present invention relates to control field, more particularly to a kind of control system and its method of electro-hydraulic mixed injection moulding machine.
Background technology
Traditional fluid pressure type injection machine by motor-driven hydraulic oil pump, using hydraulic oil as medium is rotated, by liquid
Compressing cylinder realizes that coupled screw rod moves forward and backward, and, to mould, its speed regulation one is high to flow to promote plastic injection in barrel
Amount valve openings of sizes, its screw acting power size is realized by the relief valve set pressure in hydraulic system.The simple structure,
Low cost, is the wide variety of control device of current injection machine, but the device has following defect：(1) due to hydraulic drive
The change of the temperature of medium, causes controlled parametric speed and pressure change, influences the precision of injection molding technique；(2) due to liquid
The compressibility of force feed, position control accuracy is not high when causing multi-stage injection；(3) due to hydraulic oil as driving medium, making
With or maintenance when there is leakage phenomenon unavoidably, so as to cause industrial pollution：(4) hydraulic rotation system motor conversion links are more, control
System influence frequency is low, causes hydraulic system energy consumption big, and hydraulic medium easily generates heat, and certainly will be caused using water as cooling medium
The complication of equipment.Fully electric injection machine is expensive, and the ejection leading screw rapid wear in injection machine, and the contact force for penetrating platform is general
It is non-adjustable.
The content of the invention
In view of the above-mentioned state of the art, the technical problems to be solved by the invention are to provide a kind of electro-hydraulic mixed type
The control system and its method of injection machine.
The technical scheme that present invention solution above-mentioned technical problem is used is for a kind of control system of electro-hydraulic mixed injection moulding machine
System and its method.
Motor；
Oil pump；
Servo-driver；
PLC：The PLC is used to control the operation of injection machine；
First servomotor：First servomotor is used to drive oil pump；
Second servomotor：Second servomotor is used for drive motor；
I O board：The I O board is the integrated mainboard of I/O interface, and the I O board connects servo-driver and PLC；
Wherein, PLC assigns instruction to servo-driver by I O board；Servo-driver is according to instruction control the first servo electricity
The operation of machine and the second servomotor.
Further, the instruction includes the first servomotor speed controling signal and the control of the second servomotor rotating speed
Signal.
Further, also including pouring member；The pouring member includes screw rod, mould；The mould is provided with die cavity, institute
Screw rod is stated for promoting injection raw material to enter die cavity, the motor drives the screw rod to rotate.
Further, the oil pump is used to drive injection machine matched moulds and die sinking, and the oil pump is also for injection machine provides locked mode
Power.
Further, the I O board is provided with 4 slots.
Further, also including warning system, the warning system is controlled by PLC.
Further, have steps of：
S1：PLC sends the first servomotor speed controling signal, the second servomotor speed controling signal to servo-drive
Device；Servo-driver controls the rotating speed of the first servomotor and the rotating speed of the second servomotor；
S2：The rotating speed of the first servo motor driven oil pump and control oil pump；Second servomotor drive motor simultaneously controls horse
The rotating speed for reaching；
S3：When the first servomotor and in running order the second servomotor, the first servomotor and the second servo
Working condition is fed back to servo-driver by motor, and the servo-driver is by the first servomotor and the second servomotor work
The situation for making state is sent to PLC；
S4；When the working condition of the first servomotor and hydraulic system occurs abnormal, PLC control warning system alarms.
The present invention makes the stability of injection machine more preferable, repeated more preferable；Compared compared to full electric injection molding machine control system
With longer service life；The product of processing is compared with all-hydraulic control system for shot machine has precision higher, and injection
The noise that machine is produced when running is more small.
Brief description of the drawings
Fig. 1 is the system diagram that PLC controls injection machine；
Fig. 2 is I O board plan.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
Fig. 1-Fig. 2 is refer to, the present invention, a kind of control system and its method of electro-hydraulic mixed injection moulding machine, it includes：Horse
Up to, oil pump, servo-driver, PLC, the first servomotor, the second servomotor and I O board；The PLC is used to control injection machine
Operation；First servomotor is used to drive oil pump；Second servomotor is used for drive motor；The I O board is IO
The mainboard of Interface integration, the I O board connects servo-driver and PLC.
Wherein, PLC assigns instruction to servo-driver by I O board；Servo-driver is according to instruction control the first servo electricity
The operation of machine and the second servomotor.
The instruction includes the first servomotor speed controling signal and the second servomotor speed controling signal.
The control system and its method of electro-hydraulic mixed injection moulding machine, have steps of：
S1：PLC sends the first servomotor speed controling signal, the second servomotor speed controling signal to servo-drive
Device；Servo-driver controls the rotating speed of the first servomotor and the rotating speed of the second servomotor.
S2：The rotating speed of the first servo motor driven oil pump and control oil pump；Second servomotor drive motor simultaneously controls horse
The rotating speed for reaching.
S3：When the first servomotor and in running order the second servomotor, the first servomotor and the second servo
Working condition is fed back to servo-driver by motor, and the servo-driver is by the first servomotor and the second servomotor work
The situation for making state is sent to PLC.
S4；When the working condition of the first servomotor and hydraulic system occurs abnormal, PLC control warning system alarms.
PLC controls the operation of whole injection machine, and the PLC connections, warning system and display screen, the PLC pass through I O board
It is connected with servo-driver.
The servo-driver is using digital signal processor as control core, it is possible to achieve more complicated control
Algorithm, realizes digitlization, networking and intellectuality.And protect electricity with the fault detect such as overvoltage, overcurrent, overheat, under-voltage
Road.PLC recognizes data signal, and the instruction for sending also is digital quantity signal；The PLC sends instructions to servo and drives by I O board
Dynamic device, servo-driver is according to the rotating speed of instruction the first servomotor of control and the rotating speed of the second servomotor.
First servo motor driven oil pump, drives the die opening mechanism of injection machine, clamping to provide when oil pump is operated
Power；Also for the clamping of injection machine provides clamp force.
PLC sends a signal to servo-driver in the form of instructing, and servo-driver controls the power of the first servomotor
So as to the rotating speed and torque of control oil pump.
The power of the first servomotor keeps certain；When the rotating speed of the first servomotor increases, the rotating speed increase of oil pump,
The torque of oil pump reduces, when the rotating speed of oil pump reduces, the torque increase of oil pump；When need improve injection machine matched moulds and die sinking
Speed when, improve the first servomotor rotating speed；When injection machine matched moulds, the rotating speed of injection machine is gradually reduced, injection
Machine matched moulds to a certain extent when, produce certain mold clamping force, mold clamping force is mould clamp force when reaching maximum, and now oil pump turns
Square is maximum, and rotating speed is most slow.
Consequently, it is possible to when the first servomotor power keep one timing, PLC set the first servomotor rotating speed, PLC with
The form of instruction sends the tach signal of the first servomotor to servo-driver, and servo-driver controls the first servomotor
Rotating speed, so that the rotating speed and torque of control oil pump.
Pouring member；The pouring member includes screw rod, mould；The mould is provided with die cavity.
The second servomotor drive motor, drives the screw rod during motor running, screw rod is rotated will injection original
In material propulsion die cavity.
PLC sends the tach signal of the second servomotor to servo-driver, servo-driver control in the form of instructing
The rotating speed of the second servomotor is so as to control the torque of the second servomotor, so as to control screw rod to push speed and the control of raw material
Screw rod processed pushes the power of raw material.
I O board is the integrated mainboard of I/O interface, and PLC is connected by I O board and servo-driver, and PLC is sent by I O board and referred to
Make to servo-driver, the servo-driver feeds back the working condition of the first servomotor, the second servomotor by I O board
To PLC；The I O board is provided with four slots, so that I O board possesses autgmentability, PLC and other devices are communicated, can be by connecting
I O board is connect to realize signal conveying and receive.In this embodiment, PLC is communicated at a high speed by Ethernet with servo-driver.
Servo-driver connects the first servomotor and the second servomotor by circuit in this embodiment；Servo
Driver by circuit control the first servomotor, the voltage of the second servomotor and electric current so as to control the first servomotor,
The power of the second servomotor, reaches the first servomotor of control, the purpose of the second servomotor rotating speed.
Also include warning system and exigency stop system；Warning system and exigency stop system are all connected with PLC；Work as servo-driver
Or first servomotor or the work of the second servomotor when occurring abnormal, servo-driver is watched according to the first servomotor, second
The working condition for taking motor is sent to PLC；PLC receives signal control warning system alarm；Wherein, exigency stop system be provided with jerk by
Button, when people press scram button, PLC sends emergent stop signal to servo-driver；Servo-driver controls the first servo electricity
Machine, the second servomotor jerk.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (7)
1. a kind of control system of electro-hydraulic mixed injection moulding machine, it is characterised in that including：
Motor；
Oil pump；
Servo-driver；
PLC：The PLC is used to control the operation of injection machine；
First servomotor：First servomotor is used to drive oil pump；
Second servomotor：Second servomotor is used for drive motor；
I O board：The I O board is the integrated mainboard of I/O interface, and the I O board connects servo-driver and PLC；
Wherein, PLC assigns instruction to servo-driver by I O board；Servo-driver according to instruction control the first servomotor and
The operation of the second servomotor.
2. the control system of a kind of electro-hydraulic mixed injection moulding machine according to claim 1, it is characterised in that：The instruction bag
Include the first servomotor speed controling signal and the second servomotor speed controling signal.
3. the control system of a kind of electro-hydraulic mixed injection moulding machine according to claim 1, it is characterised in that：Also include injection
Component；The pouring member includes screw rod, mould；The mould is provided with die cavity, and the screw rod is used to promote injection raw material to enter
Die cavity, the motor drives the screw rod to rotate.
4. the control system of a kind of electro-hydraulic mixed injection moulding machine according to claim 1, it is characterised in that：The oil pump is used
In injection machine matched moulds and die sinking is driven, the oil pump is also for injection machine provides clamp force.
5. the control system of a kind of electro-hydraulic mixed injection moulding machine according to claim 1, it is characterised in that：In the I O board
It is provided with 4 slots.
6. the control system of a kind of electro-hydraulic mixed injection moulding machine according to claim 1, it is characterised in that：Also include alarm
System, the warning system is controlled by PLC.
7. the control method of a kind of electro-hydraulic mixed injection moulding machine according to claim 1, it is characterised in that with following step
Suddenly：
S1：PLC sends the first servomotor speed controling signal, the second servomotor speed controling signal to servo-driver；
Servo-driver controls the rotating speed of the first servomotor and the rotating speed of the second servomotor；
S2：The rotating speed of the first servo motor driven oil pump and control oil pump；Second servomotor drive motor simultaneously controls motor
Rotating speed；
S3：When the first servomotor and in running order the second servomotor, the first servomotor and the second servomotor
Working condition is fed back into servo-driver, the servo-driver is by the first servomotor and the second servomotor work shape
The situation of state is sent to PLC；
S4；When the working condition of the first servomotor and hydraulic system occurs abnormal, PLC control warning system alarms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611240762.4A CN106738739A (en) | 2016-12-29 | 2016-12-29 | A kind of control system and its method of electro-hydraulic mixed injection moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611240762.4A CN106738739A (en) | 2016-12-29 | 2016-12-29 | A kind of control system and its method of electro-hydraulic mixed injection moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106738739A true CN106738739A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611240762.4A Pending CN106738739A (en) | 2016-12-29 | 2016-12-29 | A kind of control system and its method of electro-hydraulic mixed injection moulding machine |
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| CN (1) | CN106738739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575427A (en) * | 2017-08-16 | 2018-01-12 | 温州亿科电子有限公司 | A kind of servo oil pump system |
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|---|---|---|---|---|
| CN201520045U (en) * | 2009-09-15 | 2010-07-07 | 宁波弘讯科技有限公司 | Energy-saving control system for oil-electric compound injection molding machine |
| CN102358019A (en) * | 2011-07-27 | 2012-02-22 | 深圳大学 | Double-servo control system and energy-saving injection molding machine comprising same |
| CN102632599A (en) * | 2012-03-27 | 2012-08-15 | 宁波恩瑞德机电科技有限公司 | Control system of injection molding machine |
| CN205685680U (en) * | 2016-06-13 | 2016-11-16 | 江苏和亿机电科技有限公司 | A kind of control circuit of injection machine |
-
2016
- 2016-12-29 CN CN201611240762.4A patent/CN106738739A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201520045U (en) * | 2009-09-15 | 2010-07-07 | 宁波弘讯科技有限公司 | Energy-saving control system for oil-electric compound injection molding machine |
| CN102358019A (en) * | 2011-07-27 | 2012-02-22 | 深圳大学 | Double-servo control system and energy-saving injection molding machine comprising same |
| CN102632599A (en) * | 2012-03-27 | 2012-08-15 | 宁波恩瑞德机电科技有限公司 | Control system of injection molding machine |
| CN205685680U (en) * | 2016-06-13 | 2016-11-16 | 江苏和亿机电科技有限公司 | A kind of control circuit of injection machine |
Non-Patent Citations (1)
| Title |
|---|
| 祖国建: "《电气控制与PLC》", 31 January 2010, 华中科技大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575427A (en) * | 2017-08-16 | 2018-01-12 | 温州亿科电子有限公司 | A kind of servo oil pump system |
| CN107575427B (en) * | 2017-08-16 | 2019-02-22 | 温州亿科电子有限公司 | A kind of servo oil pump system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |