CN109049586A - The control system framework of electric injection molding machine - Google Patents
The control system framework of electric injection molding machine Download PDFInfo
- Publication number
- CN109049586A CN109049586A CN201810917856.3A CN201810917856A CN109049586A CN 109049586 A CN109049586 A CN 109049586A CN 201810917856 A CN201810917856 A CN 201810917856A CN 109049586 A CN109049586 A CN 109049586A
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- computer
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 112
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 9
- 230000003993 interaction Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000011161 development Methods 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000012899 standard injection Substances 0.000 description 1
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
-
- 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
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of control system framework of electric injection molding machine, the upper computer and lower computer including mutual communication connection；Host computer passes through EtherCAT or CAN-Open and slave computer communication connection, is configured with Human machine interface on host computer；The axis technological parameter being arranged on Human machine interface is sent to slave computer by EtherCAT or CAN-Open communication by the program on host computer；Slave computer feeds back the real-time status of slave computer by EtherCAT or CAN-Open to host computer；It is provided with communication main website and one group or more on slave computer and communicates slave station, communication main website carries out data receiver and feedback by EtherCAT or CAN-Open and host computer, communicates and carries out data distribution and feedback by inner high speed bus between main website and communication slave station.The present invention can reduce host computer performance requirement, reduce host computer cost, and injection pressure control is more accurate, and mechanical movement speed is smoother, and V-P handoff response is more timely, promotes injecting products accuracy and stability.
Description
Technical field
The present invention relates to a kind of injection molding machine, in particular to the control system framework of a kind of electric injection molding machine.
Background technique
Existing electric injection molding machine is broadly divided into full electric injection molding machine and electric two kinds of machine of the mixed injection molding of oil, common system connection
Mode has following two:
1. referring to Fig. 1, host computer (usage of trade is known as computer or controller) and servo-driver by EtherCAT into
Row communication；In the control program, host computer only follows upper to the reference values such as the real-time transmission speed of slave computer, electric current, slave computer
The instruction of machine is run, and the information such as Real-time Feedback position, speed and electric current.
2. referring to fig. 2, host computer is connect by EtherCAT or CAN-Open with an axis motion-control module, by moving
Control module plans servo motion parameter, and lowering velocity or electric current etc. are instructed to servo-driver.
Servo-driver in both the above system schema is subordinated to host computer or motion-control module, and what is executed is speed
Follow the mode is spent, this just brings some deficiencies:
A) because host computer or motion-control module will have multiple-axis servo curve planning ability, cause its hardware cost high
It is high；
B) motion control unit (host computer or motion-control module) and Motor execution unit (servo-driver) separate, and lead to
The lag of period (common 1ms or 0.5ms) and data processing (common 1ms or 0.5ms major cycle) is interrogated, inevitably influences to hold
The response speed of row mechanism；Wherein, under higher injection speed, pressure rings pressure overshoot amount, V-P switching position precision influence most
It is obvious.
Therefore, it is necessary to be further improved.
Summary of the invention
The purpose of the present invention is intended to provide one kind and can be greatly reduced to host computer performance requirement, reduces host computer cost, note
Blow pressure control is more accurate, and mechanical movement speed is smoother, and V-P handoff response is more timely, effectively promotes injecting products accuracy
With the control system framework of the electric injection molding machine of stability, to overcome shortcoming in the prior art；The frame of this control system
The movement locus planning function for being molded motor shaft is innovatively placed in respective servo-drive by structure.
By a kind of control system framework of electric injection molding machine of this purpose design, host computer including mutual communication connection and
Slave computer；It is characterized by: the host computer passes through EtherCAT or CAN-Open and slave computer communication connection, match on host computer
It is equipped with Human machine interface；Program on host computer by the axis technological parameter being arranged on Human machine interface by EtherCAT or
CAN-Open communication is sent to slave computer；The slave computer feeds back slave computer to host computer by EtherCAT or CAN-Open
Real-time status；Be provided with communication main website on the slave computer and one group or more communicate slave station, communication main website by EtherCAT or
CAN-Open and host computer carry out data receiver and feedback, communicate and are carried out between main website and communication slave station by inner high speed bus
Data distribution and feedback.
It is provided with main website address card in the communication main website, layout has external communication interface and inside on the main website address card
Communication interface, wherein external communication interface carries out data interaction by EtherCAT or CAN-Open, and two groups of communication interfaces pass through
Mapping is exchanged with each other data；Main website is communicated by external communication interface and host computer real-time perfoming data exchange, communication main website is logical
It crosses internal communication Interface and Communication slave station and carries out the read and write of parameter and by the data distribution of host computer to communicating slave station.It is described
The main website for carrying out functional development to communication main website or communication slave station being assisted to carry out movement calculating is provided in communication main website
PLC；The main station monitoring program module for monitoring communication state and software and hardware exception is provided on the main website PLC.
Slave station PLC and the internal communication module for receiving/sending data are provided on the communication slave station；Slave station PLC
On be provided with independent procedure module for calculating motion profile and parameter, for monitor mechanical trip and it is static when zero-speed shape
The slave station monitoring program module of state, the slave station alert program module for executing safety stop function, for controlling external emergency stop
The monitoring program module of the emergency stop program module of I/O state, itself monitor communication state and software and hardware exception.
On the host computer configured with Human machine interface master controller interconnected, be provided with HMI on master controller
Interface and main control unit, HMI interface communication connection Human machine interface；The master controller passes through EtherCAT or CAN-Open
With communication main website communication connection.
It is respectively arranged with internal bus interface on the communication main website and communication slave station, the internal bus communicated in main website connects
It is connect between internal bus interface on mouth and communication slave station by data line identical with EtherCAT cable.
Scram button signal in the emergency stop program module is connected by I/O port and master controller and each communication slave station
It connects.
The Human machine interface includes process data display interface, equipment state display interface, process data setting interface
And/or mechanical data sets interface.
The present invention has following technical effect:
1. utilizing servo internal bus and its development platform, does not need host computer and carry out curve gauge stroke and real-time transmission speed
With reference to, the demand to host computer performance is greatly lowered, need to only support the standard injection machine system of EtherCAT or CAN-Open,
It can be used as the host computer in this system framework, reduce the host computer cost of electric injection molding machine.
The fast worktodo of 0.125 μ s of 2.PLC, by the inner high speed bus of same 0.125 μ s, than common system side
It fast 8 times of case, so that injection pressure control is more accurate, the mechanism speed of service is smoother, V-P handoff response is more timely, can finally mention
Rise client's product accuracy and stability.
Detailed description of the invention
Fig. 1 and Fig. 2 is respectively the control system data interaction flow chart of existing electric injection molding machine routine.
Fig. 3 and Fig. 4 is respectively the control system data interaction flow chart of one embodiment of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 3 and Fig. 4, the control system framework of this electric injection molding machine, the host computer including mutual communication connection is under
Position machine；Wherein, host computer is for controlling all protections of electric injection molding machine and logical action；Host computer by EtherCAT technology or
CAN-Open technology and slave computer communication connection；Human machine interface is configured on host computer, host computer will be on Human machine interface
By EtherCAT or CAN-Open communication transmission on demand to slave computer, slave computer passes through the axis technological parameter of the injection molding machine of setting
Real-time status of the EtherCAT or CAN-Open to host computer feedback slave computer, wherein the parameter issued includes the speed of electronic axle
Spend setting, Place object, electric current are set, action mode and number etc., communicate feedback data include the velocity feedback of electronic axle,
Position feedback, current feedback, actuation time etc.；It is provided with communication main website and one group or more on slave computer and communicates slave station, communication master
It stands and one group or more communication slave station communication connection, communication main website feeds back slave computer to it and respectively stand for receiving host computer data
Point real-time status；It communicates main website and data receiver and feedback is carried out by EtherCAT or CAN-Open and host computer, communicate main website
Data distribution and feedback are carried out by inner high speed bus between communication slave station；Host computer is communicated by other types or the end IO
Mouthful, control the hydraulic station or other equipment in non-slave station communication.When work, real time monitoring communication, slave computer alarm condition are necessary
When issue stop command (Communication Control word and DO signal)；Monitoring axle stroke section and it is static when abnormal speed, once beyond prison
Range is controlled, immediately treats overtravel alarm, and cut off enabled and servo forceful electric power.
Furtherly, it is provided with main website address card in the communication main website, layout has external communication on the main website address card
Interface and internal communication interface, wherein external communication interface carries out data interaction by EtherCAT or CAN-Open, and two groups logical
Communication interface is exchanged with each other data by mapping；It communicates main website and passes through external communication interface and host computer real-time perfoming data exchange,
Main website is communicated to carry out the read and write of parameter by internal communication Interface and Communication slave station and extremely communicate the data distribution of host computer
Slave station.
It is provided in communication main website for carrying out functional development to communication main website or communication slave station being assisted to carry out movement calculating
Main website PLC；The main station monitoring program module for monitoring communication state and software and hardware exception is provided on main website PLC.
Furtherly, it communicates on slave station and is provided with slave station PLC and the internal communication module for receiving, sending data；From
It stands and is provided with the independent procedure module for calculating motion profile and parameter, the slave station for executing safety stop function on PLC
Alert program module, the emergency stop program module for controlling external emergency stop I/O state, itself monitor communication state and software and hardware are different
Normal monitoring program module.After communication slave station receives the host computer instruction of communication main website distribution, responds and transport in conjunction with other conditions
Row instruction executes axis operation according to the motion profile of slave station PLC planning, and according to the real-time correction motion rail of Spindle Status data
Mark；The independent mechanical trip to this axis of each communication slave station and it is static when zero-speed state be monitored, once occurring abnormal, stand
" transfiniting position " or " speed is overproof " alarm is issued, while voluntarily executing safety stop function, and it is enabled to cut off control.Communication
Slave station obtains the exercise data of electronic axle by communicating main website, calculates shaft kinematic parameter by slave station PLC, is receiving host computer
Operating instruction after, communication slave station driving servo motor according to calculating kinematic parameter run, and during exercise in real time amendment
Running track.
External scram button signal accesses host computer and each slave station of slave computer, enhancing system safety by I/O port simultaneously
Reliability.
Furtherly, HMI module interconnected and master controller (cpu motherboard), master controller are configured on host computer
On be provided with HMI interface and main control unit, HMI interface is for connecting Human machine interface；Master controller by EtherCAT or
CAN-Open and communication main website communication connection.
Furtherly, it is respectively arranged with internal bus interface on communication main website and communication slave station, communicates the inside in main website
It is connect between internal bus interface in bus interface and communication slave station by data line identical with EtherCAT cable.
Furtherly, the scram button signal in emergency stop program module by I/O port and master controller and each communication from
It stands connection；Emergency stop program module is ESP switch.
Furtherly, Human machine interface includes that process data display interface, equipment state display interface, process data are set
Demarcation face and mechanical data set interface；That is Human machine interface has that process data is shown, equipment state is shown, process data
Setting and/or mechanical data set-up function.
Transmission data between host computer and slave computer are divided into two kinds of forms, are non-real-time data and real time data respectively.
Wherein, the host computers such as mechanical parameter, process data go the parameter of read-write to incorporate into non-real-time data without each communication cycle, this
Class data can encode in the protocol according to its principal and subordinate's station number, and main website is according to the Read-write Catrol word of upper transmission, internal total
The parameter container of corresponding coding is retrieved and read and write in line.
" writing " of non-real-time data:
It comprises the concrete steps that:
1. host computer passes through the communication master of EtherCAT or CAN-Open (hereinafter referred to as, external bus) into slave computer
It stands and sends control word (containing " write parameters " control word), parameter coding, parameter container；
Information is mapped into its internal bus by external bus 2. communicating main website；
3. respectively communication slave station gets parms to encode and retrieve in its program segment；
4. finding it corresponds to parameter coding；
5. by data assignment to slave station retrieves in parameter container the corresponding argument address of parameter coding；
6. slave computer feedback " write parameters " finishes receiving；
7. host computer terminates " write parameters " control word.
" reading " of non-real-time data:
It comprises the concrete steps that:
1. host computer by communication main website of the external bus into slave computer send control word (containing " reading parameter " control word),
Parameter coding, parameter container；
Information is mapped into its internal bus by external bus 2. communicating main website；
3. communication slave station gets parms, coding is retrieved in its program segment；
4. finding it corresponds to parameter coding；
5. data assignment will be communicated in the argument address corresponding with parameter coding that retrieves of slave station to parameter container；
6. communication slave station feedback data is ready to complete；
7. internal bus parameter container numerical value is mapped in external bus by communication main website；
8. terminating " reading parameter " control word by host computer.
" reading and writing " of real time data:
Communication main website in slave computer is as a data interaction station, with each communication slave station in each internal bus period
The interaction of a real time data is carried out, each external bus cycle and host computer carry out a data exchange.
Mode of the data of two buses by main website mapping interacts.
The content of real time data:
It is necessary: control word, status word, actual speed, actual torque, actual pressure, physical location；
It is inessential: setting speed, setting torque, setting pressure
(note: the real time data of " inessential ", when communication data byte is limited, host computer can be used to be sent out in itself program
It send to the numerical value of slave computer, the numerical value without reading Real-time Feedback from slave computer.)
Above-mentioned is preferred embodiment of the invention, and basic principles and main features and the present invention of the invention have been shown and described
The advantages of.Those skilled in the art should be recognized that the present invention is not limited to the above embodiments, above embodiments and description
Described in merely illustrate the principles of the invention, without departing from the spirit and scope of the present invention the present invention also have it is various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached the spirit and scope of the invention define.
Claims (8)
1. a kind of control system framework of electric injection molding machine, the upper computer and lower computer including mutual communication connection；Its feature exists
In: the host computer passes through EtherCAT or CAN-Open and slave computer communication connection, is configured with man-machine interface on host computer
HMI；Program on host computer passes the axis technological parameter being arranged on Human machine interface by EtherCAT or CAN-Open communication
It send to slave computer；The slave computer feeds back the real-time status of slave computer by EtherCAT or CAN-Open to host computer；It is described
Be provided with communication main website on slave computer and one group or more communicate slave station, communication main website by EtherCAT or CAN-Open with it is upper
Machine carries out data receiver and feedback, by inner high speed bus progress data distribution and instead between communication main website and communication slave station
Feedback.
2. the control system framework of electric injection molding machine according to claim 1, it is characterised in that: be arranged in the communication main website
There is main website address card, layout has external communication interface and internal communication interface on the main website address card, wherein external communication interface
Data interaction is carried out by EtherCAT or CAN-Open, two groups of communication interfaces are exchanged with each other data by mapping；Communicate main website
By external communication interface and host computer real-time perfoming data exchange, communicate main website by internal communication Interface and Communication slave station into
The read and write of row parameter and by the data distribution of host computer to communicating slave station.
3. the control system framework of electric injection molding machine according to claim 2, it is characterised in that: be arranged in the communication main website
There is the main website PLC for carrying out functional development to communication main website or communication slave station being assisted to carry out movement calculating；On the main website PLC
It is provided with the main station monitoring program module for monitoring communication state and software and hardware exception.
4. the control system framework of electric injection molding machine according to claim 3, it is characterised in that: be arranged on the communication slave station
There are slave station PLC and the internal communication module for receiving/sending data；Be provided on slave station PLC for calculate motion profile and
The independent procedure module of parameter, for monitor mechanical trip and it is static when zero-speed state slave station monitoring program module, be used for
Execute the slave station alert program module of safety stop function, the emergency stop program module for controlling external emergency stop I/O state, voluntarily
Monitor the monitoring program module of communication state and software and hardware exception.
5. the control system framework of electric injection molding machine according to claim 4, it is characterised in that: be configured on the host computer
With Human machine interface master controller interconnected, HMI interface and main control unit, HMI interface communication are provided on master controller
Connect Human machine interface；The master controller passes through EtherCAT or CAN-Open and communication main website communication connection.
6. the control system framework of electric injection molding machine according to claim 5, it is characterised in that: the communication main website and communication
Internal bus interface is respectively arranged on slave station, the internal bus interface communicated in main website connects with the internal bus on communication slave station
It is connect between mouthful by data line identical with EtherCAT cable.
7. the control system framework of electric injection molding machine according to claim 5, it is characterised in that: the emergency stop program module
Scram button signal is connect by I/O port with master controller and each communication slave station.
8. the control system framework of electric injection molding machine according to claim 1, it is characterised in that: the Human machine interface packet
Include process data display interface, equipment state display interface, process data setting interface and/or mechanical data setting interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917856.3A CN109049586A (en) | 2018-08-13 | 2018-08-13 | The control system framework of electric injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917856.3A CN109049586A (en) | 2018-08-13 | 2018-08-13 | The control system framework of electric injection molding machine |
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| CN109049586A true CN109049586A (en) | 2018-12-21 |
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| CN201810917856.3A Pending CN109049586A (en) | 2018-08-13 | 2018-08-13 | The control system framework of electric injection molding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195069A (en) * | 2022-06-27 | 2022-10-18 | 佛山市南海区广工大数控装备协同创新研究院 | Universal data acquisition module and system for injection molding machine |
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Application publication date: 20181221 |