CN104085067B - Full-automatic vacuum molding control system and method - Google Patents
Full-automatic vacuum molding control system and method Download PDFInfo
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Abstract
The present invention relates to a kind of full-automatic vacuum molding control system and method.Native system is made up of monitoring modular, control module and execution module, control module forms by master controller computer with from controller programmable logic controller (PLC), monitoring modular is made up of video-frequency monitor, pressure transducer and limit switch, performs that module is coupled vacuum pump by evacuation motor, stirring motor couples stirring rod, topple over motor and couple firming agent material cup and compound cup and electromagnetic valve, illuminating lamp is constituted.This control method achieves the visualization of type vacuum injecting and forming process, automatization and intelligentized control method.The present invention can greatly save cost of human resources, improve note type work efficiency and quality of item.
Description
Technical field
The present invention relates to a kind of full-automatic vacuum molding control system and method, this system uses by computer and can
The two-stage distributed structure of programmed logic controller composition, is particularly well-suited to the detection automatically of vacuum, controls and mould material
The supervision of bubble and control, provide different technological parameters for different product geometric properties and customer demand, complete vacuum
The Automatic Control of mould forming process process.
Background technology
Rapid shaping and rapid die design make enterprise shorten exploitation and the manufacturing cycle of product, it is achieved thereby that enterprise
The quick-reaction capability of industry reply turn of the market, improves the competitiveness of product in market.As typical fast mould skill indirectly
The type vacuum injecting and forming technology of one of art can note type under vacuum conditions, thus preferably solve the air bubble problem in material, waste product
Rate is relatively low, so quickly growing.
Type vacuum injecting and forming technology utilizes master mold to make silica gel mould the most under vacuum, then carries out mould material
After the operation such as evacuation, mix and blend, air inlet froth breaking, it is injected into silica gel mould die cavity, changes finally by crosslinking, solidification etc.
Learn the reaction residual liquor body Morphological Transitions to solid, thus obtain required part.Type vacuum injecting and forming technology manufacture thin-wall part and
Transparent Parts aspect has unique advantage, before the industries such as automobile, household electrical appliances, light industry, artware and toy for children have wide application
Scape, so some enterprises and research institution are all developing type vacuum injecting and forming equipment both at home and abroad.
The product quality that type vacuum injecting and forming equipment produces relies primarily on the following aspects: the mix homogeneously journey of mould material
Degree, casting process parameters (such as mould inlet pressure, poring rate, the setting time etc. of mixing material in casting process), cast
Material bubble eliminates degree and the regulation and control accuracy of vacuum.Therefore, how most optimally to control according to the different demands of client
Casting process parameters, farthest eliminating the bubble in mould material is the key issue solving type vacuum injecting and forming product quality.
Existing type vacuum injecting and forming equipment mainly uses manually, electrically three kind control modes automatic with model of memory.For hands
The dynamic type vacuum injecting and forming equipment with Electronic control, the detection of its vacuum, is by artificially estimating subjective judgment, easily causing production
Efficiency is low and the problem such as maloperation, and anthropic factor impact is unfavorable for greatly the stability contorting of quality of item.In a word, existing vacuum impregnating
Type control system is strong to experience and proficiency level's dependency of operator, and production efficiency is low, it is flexible poor to produce, thus causes
The difficult quality guarantee of product.
Summary of the invention
Present invention aims to the defect of existing vacuum casting control system and method, it is provided that a kind of by software
With open type full automatic vacuum casting control system and the method for hardware organic integration, to realize real-time to key process parameter
Automatically control, improve its automaticity and processing flexibility, rate of reducing the number of rejects and seconds.This control system uses by computer and able to programme
The two-stage distributed structure of logic controller composition, is integrated with the technology such as sensor, Based Intelligent Control, data base, microcomputer interface, real
The automatization of existing whole type vacuum injecting and forming process and intellectuality.Being mainly reflected in can be according to customer demand and profiled member geometric properties
Recommend molding optimum working process parameter accordingly, greatly reduce the equipment dependency to operator's experience, therefore improve
The stability of the flexibility of type vacuum injecting and forming equipment, production efficiency and product quality.
Insight of the invention is that
The full-automatic vacuum molding control system of the present invention is: realizes real-time online with video-frequency monitor and monitors mixing material
Mixing situation, bubble situation and cast time mixing material level decline situation；Vacuum pressure is realized with pressure transducer
Detection in real time, and realize acquisition and the process of pressure signal with computer and programmable logic controller (PLC) by real-time communication, from
And replace traditional manual observation Pressure gauge subjective judgment and perform to bleed or air inlet action；Programming with Rhizoma Sparganii Programmable Logic Controller
The control program of the whole technical process of software programming, and realize real-time communication to receive command signal and to control to perform with host computer
Object；Utilizing database software to set up vacuum injection molding technique storehouse, it is conducted interviews by configuration software by open type data interface
And the technological parameter of intelligent optimization is provided according to user's request.
This full-automatic vacuum molding control system uses the two-stage distribution being made up of computer and programmable logic controller (PLC)
Formula structure, it is possible to achieve the visualization of type vacuum injecting and forming process, automatization, intelligentized control method.For the ease of maintenance and expansion, it is hard
Part uses modular construction, mainly includes control module, monitoring modular and execution module.Wherein control module includes master controller
(computer PC) and from controller (programmable logic controller (PLC) PLC)；Monitoring modular is used for signals collecting, including the inspection of material cup position
Survey, drive motor speed detection, the bubble of mixing material and the supervision of cast liquid level and vacuum chamber pressure detection；Execution module is pressed
Carry out evacuation according to controller instruction, stir, topple over and the action such as air inlet, including stirring and cast drive motor, electromagnetic valve and
Vacuum pump and illuminating lamp.
Conceiving according to foregoing invention, the present invention uses following technical proposals:
A kind of full-automatic vacuum molding control system, is performed module by a control module, a monitoring modular and one
Composition, described control module connects described detection module and performs module, it is characterised in that: described control module is by a master control
Device processed couples one and constitutes from controller；Described monitoring modular is by a video-frequency monitor, two pressure transducers and four limits
Bit switch is constituted；Described execution module is to be coupled a vacuum pump, stirring motor one stirring of connection by an evacuation motor
Rod, two topple over motor and couple a firming agent material cup and compound cup and five electromagnetic valves, illuminating lamp structures respectively
Become；
In described control module, master controller is computer, is programmable logic controller (PLC) from controller, FPGA
Controller is connected by SC-09 Programme Line with computer；
Limit switch in described monitoring modular topples over motor through described from controller connection, thus controls compound respectively
Cup and the limit travel position of firming agent material cup；Two pressure transducers are respectively placed in upper and lower two tanks, by A/D modular converter
It is connected with programmable logic controller (PLC), then by Programme Line, signal is passed to computer, it is achieved the reality of vacuum chamber pressure
Time gather with monitoring；Liquid when video-frequency monitor is realized batch mixing cup liquid level bubble by USB interface and computer communication and poured into a mould
Face declines the real-time supervision of situation, joins light source illuminating lamp for improving collection effect；
In described execution module, evacuation motor, stirring motor, the control line of toppling over motor and electromagnetic valve are connected to compile
The outfan of journey logic controller, and each drives motor respectively by being mechanically connected and the connection of corresponding driven object.
Involved by above-mentioned full-automatic control system, the concrete function of module is described as follows:
1. control module
(1) master controller (computer PC)
Mainly complete the design of man machine interface and the data communication from controller and monitoring element, video image real-time
Process, the access of external data base and maintenance, the function such as real-time monitoring of executive component running status.
(a) man machine interface
Realized the design of man machine interface by configuration software, this interface includes following components: technological parameter is arranged, gas
Bubble video monitor, the emulation of note type, communication setting, database access.
(b) data communication
Programmable logic controller (PLC) and computer are connected by SC-09 Programme Line and realize data communication, make in computer
Work out control program with specific PLC programming software according to technological requirement, then be downloaded to PLC and refer to as the driving of executive component
Order；Furthermore it is possible to carry out technological parameter setting in man machine interface, realize controlling the online modification of parameter by variable association；
Video-frequency monitor and computer are connected by standard USB interface and realize data communication, the video image that will collect
It is real-time transmitted in computer, and the video monitor window in man machine interface show in real time；
Pressure transducer and programmable logic controller (PLC) realize data communication through A/D modular converter, are detected by sensor
Vacuum tank force value Real-time Feedback to computer and in man machine interface show.Meanwhile, by the design of pressure detected it is
Control variable, is associated with in PLC control program as controlling vacuum pump, driving motor, stirring motor and the instruction of electromagnetic valve.
(c) database access and maintenance
Utilizing ACCESS or SQL exclusive data library software to set up vacuum injection molding technique data base, configuration software can pass through
Open type data interfacing realizes the access to external data base and maintenance.Technological data bank mainly stores the phase of note type process
Close technological parameter (include pumpdown time, mixing speed and time, topple over speed and time etc.).User has only to by man-machine
Corresponding data message can be searched for and be safeguarded in interface just easily, automatically recommends optimal processing parameter.By crucial in data base
Technological parameter gets up with the variable association in control program, to realize automatically controlling vacuum injection molding technique process.
D () monitors in real time
Simulation Interface can show the technical process of type vacuum injecting and forming and the running status of each executive component in real time, such as motor
Start-stop and the break-make of electromagnetic valve represented by the corresponding indicator light colors of Simulation Interface, the animation on Simulation Interface and A, B cup
The direction of motion consistent.
(2) from controller (programmable logic controller (PLC) PLC)
Feature according to control target and quantity select the PLC of Rhizoma Sparganii FX2n-48MR model.Major function includes: from
The control of dynamic note type process (include evacuation, air inlet, stir, topple over) receives signal with computer communication and (includes associating change
Value, force value result etc.), electric machine speed regulation (generation pulse-width signal).
2. monitoring modular
Material cup position detection: so that firming agent and mould material are toppled over thoroughly as far as possible, then need to limit corresponding material
The dump angle of cup, respectively firming agent material cup and the initial position of batch mixing cup and dump position respectively place one small-sized spacing
Switch, expects that cup travel position controls during completing vacuum casting control.
Vacuum chamber pressure detect: in order to overcome traditional vacuum note type equipment artificially observe Pressure gauge subjective judgment inaccurate and
The problem causing maloperation, uses pressure transducer to detect the pressure in casing in real time, the pressure signal that will detect
Send computer through A/D modular converter to by Programme Line, and the pressure given with technological requirement compares, it is judged that result
Realize electromagnetic valve opening and closing, stirring motor by correlated variables association and topple over the start and stop of motor, the control of vacuum pump start and stop.
3. perform module
Executive component receives the control signal of control module, it is achieved evacuation, air inlet, stirs, topple over the actions such as cast, main
Including:
Vacuum pump evacuation, the size of pressure transducer feedback vacuum, the start-stop of vacuum pump is controlled by PLC；
Electromagnetic valve keeps opening or disconnecting, to realize the shape of air inlet froth breaking, evacuation or pressure reduction according to the signal of PLC
Become and the action of balance；
Note shaped material in stirring motor stir mixing cup, selects motor or servomotor, by PLC software
The driving pulse that programming generates carries out speed governing；
Firming agent in dispensing cup is poured in batch mixing cup and is mixed with note shaped material by cast motor, will at the end of froth breaking
Batch mixing cup material is poured onto funnel and realizes cast, topples over speed by driving pulse FREQUENCY CONTROL, and dump angle is by limit switch control
System, dumping time is set by the time parameter at configuration interface according to the character of material.
This control system to implement flow process as follows:
1. system component install connect with and relevant parameter set:
Hardware method of attachment in conjunction with vacuum casting control system structured flowchart (see figure 1) this control system visible is as follows:
(1) connection of controller
When programmable logic controller (PLC) being carried out program write or amendment, need programmable logic controller (PLC) and calculating
Machine is connected by SC-09 Programme Line；When equipment is in running status, connect without cable therebetween.
(2) installation of monitoring element
(a) video-frequency monitor and light source illuminating lamp
Being horizontally installed to by ring illumination lamp above batch mixing cup support, light is vertical with batch mixing cup liquid level；Photographic head is propped up
Frame is inverted and is fixed on casing top by screw attachment；Photographic head is connected with computer by USB data line；
(b) pressure transducer
Pressure transducer is coupled with casing, by A/D modular converter and PLC technology by M20 × 1.5 external screw thread
Device is connected, it is achieved the collection of pressure data and transmission；
(c) limit switch
Limit switch is adjusted correct position according to material cup dump angle, and is connected to the defeated of programmable logic controller (PLC)
Enter end and topple over the displacement of motor to realize the spacing of dump angle for control.
(3) connection of executive component
Evacuation motor, stirring motor, to topple over motor and electromagnetic valve be all according to Programmable Logic Controller as executive component
Program behavior, so its control line to be connected to the outfan of programmable logic controller (PLC), and each drive motor distinguish
By being mechanically connected and corresponding driven object connection, wherein evacuation motor couples realization by key with vacuum pump and bleeds, stirs
Mix motor by belt transmission drive stirring rod rotate, topple over motor by shaft coupling drive firming agent material cup and compound cup incline
Ramp down material.
2. write the control program vacuum casting control method of full-automatic vacuum molding machine:
According to the technology characteristics of type vacuum injecting and forming, determine the switch condition between different conditions, recycle Rhizoma Sparganii programming software root
Control ladder diagram is write according to the flow chart (shown in Fig. 2) of automatic mode.Said system is used to carry out type vacuum injecting and forming, its type vacuum injecting and forming
Rate-determining steps is as follows:
1) when entering automatic mode, illuminating lamp is opened, evacuation electric motor starting, drives vacuum pump operation start to bleed；
2) pressure transducer detects vacuum chamber pressure and in real time by the pressure variations passing in configuration, when force value reaches
During setting value (P1), the evacuation stop condition associated with pressure variations meets, and now firming agent topples over motor rotating forward drive admittedly
Agent material cup (A cup) is toppled over firming agent is imported batch mixing cup (B cup), starts stirring motor simultaneously and drives stirring rod in B cup
Material carries out mix and blend, stirs and pours into a mould mould-filling time intervalometer and start timing (TO)；
3) when A cup topple over bump against topple over limit switch time, A cup topple over motor stop rotate forward, A cup batch turning intervalometer simultaneously
(T1) unlatching carries out batch turning timing；
4) when A cup batch turning timing reaches setting value, motor reversal drive A cup return toppled over by A cup；
5) when A cup return bumps against return limit switch, A cup is toppled over motor and is stopped reversion, and A cup return disappears with air inlet simultaneously
Bubble interval timer (T2) starts；
6) when A cup return reaches setting value with air inlet foam time intervalometer, in unlatching, lower box electromagnetic valve enters
Traveling gas froth breaking, when tank pressure increases to setting value (P2), opens closedown electromagnetic valve；
7) when stirring and cast mould-filling time interval timing reach setting value, stop stirring motor, start B cup and incline
The rotating forward of falling motor is poured into a mould；
8) when B cup topple over bump against topple over limit switch time, B cup topple over motor stop rotate forward, intervalometer toppled over by B cup simultaneously
(T3) start；
9) when B cup batch turning timing reaches setting value, B cup is toppled over motor reversal and is driven B cup return, cast simultaneously to fill
Mould intervalometer (T4) starts；
10) when B cup return bumps against return limit switch, B cup is toppled over motor and is stopped reversion；
11) pattern is poured into a mould, then when pouring into a mould mold filling intervalometer and reaching setting value, in unlatching if selection pattern is non-differential pressure
Lower box electromagnetic valve, to casing pressure release, system returns to original state.
12) if selection pattern is differential pressure pours into a mould pattern, then when B cup stops reversion, flat on differential pressure dividing plate in closedown casing
Weighing apparatus electromagnetic valve, opens differential pressure electromagnetic valve simultaneously；
13) when the pressure difference of upper lower box reaches setting value (P3), close differential pressure electromagnetic valve, carry out differential pressure cast and fill
Mould；
14) when pouring into a mould mold filling intervalometer and reaching setting value, lower box electromagnetic valve and balance electricity on differential pressure dividing plate in unlatching
Magnet valve, to casing pressure release, system returns to original state.
Wherein difficult point is: by the evacuation start and stop condition in technological process, motor start and stop condition, electromagnetic valve opening and closing condition and
The pressure variations of digital pressure gauge associates.
3. communication setting and data association: pressure transducer and programmable logic controller (PLC) realize number through A/D modular converter
According to communication, the vacuum tank force value Real-time Feedback detected by sensor is to computer, it is achieved computer is to pressure on the number signal
Read in real time, PLC uses programming port communications protocol to realize the interconnection with computer.Complete the variable of pressure sensor value simultaneously
With whether control program stops evacuation, motor and whether opens solenoid valve is associated, the control parameter in data base is become
Corresponding variable association in amount and control program.
4. processing parameter setting: in vacuum injection molding technique, according to geometric properties and the spy thereof of the Quick formed part processed
Point (Transparent Parts, thin-wall part, large piece, small articles etc.), searches for the technological parameter of correspondence in technology library by fuzzy matching, and
Automatically generate recommendation technique.
5. start type vacuum injecting and forming operation: by configuration Simulation Interface, select mode of operation, click in automatic mode and start
Button, then according to vacuum injection molding technique flow process and the technological parameter that pre-sets, carry out the operation of full automatic note type.Running
In, user can be observed the bubble situation of actual mould material by video monitoring window, be shown vacuum chamber pressure by host computer
Power situation, monitored the ruuning situation of each executive component by Simulation Interface.
The present invention compared with prior art, has and the most obviously highlights substantial feature and remarkable advantage:
(1) this control system have employed the two-stage distributed structure being made up of computer and programmable logic controller,
Clearly, integrated management is convenient, and hardware have employed modularity, it is simple to safeguards and expands in function distribution, and it is convenient that each intermodule connects, behaviour
Facilitate；
(2) the detection device such as pressure transducer and limit switch is used, it is possible to feedback detection information in time, it is achieved that system
Closed loop control, thus substantially increase precision and the automaticity of control system；
(3) use of data base achieves, according to user, the particular requirement of product is automatically provided different technique ginsengs
Number, substantially improves the flexibility of production, improves working (machining) efficiency, optimize technological parameter, improve note type effect.
(4) this control system changes traditional vacuum note type manually and the automatic control mode of memory type, by all of control
Function processed is integrated in configuration interface, it is simple to manages concentratedly and controls, and simple to operate, interface is clear.Have only to input goods letter
Breath can automatically generate recommendation technique, presses start button, just full automatic can realize whole technological process.
In a word, the full-automatic vacuum molding control system of this invention design can be greatly saved cost of human resources, improves
The work efficiency of forming machine equipment and quality of item, thus there is good economic worth and market prospect.
Accompanying drawing explanation
Fig. 1 is full-automatic vacuum molding control system structured flowchart of the present invention.
Fig. 2 is automatic mode process chart.
Fig. 3 is database access and technological parameter acquisition surface chart.
Fig. 4 is type vacuum injecting and forming Simulation Interface figure.
Detailed description of the invention
It is as follows that the preferred embodiments of the present invention combine detailed description:
Embodiment one:
See Fig. 1, this full-automatic vacuum molding control system, a control module, a monitoring modular and one hold
Row module forms, and described control module connects described monitoring modular and performs module, it is characterised in that: described control module is by one
Individual master controller couples one and constitutes from controller；Described detection module by a video-frequency monitor, two pressure transducers and
Four limit switches are constituted；Described execution module is to be coupled a vacuum pump, stirring motor connection one by an evacuation motor
Individual stirring rod, two topple over motor and couple a firming agent material cup and compound cup and five electromagnetic valves, illuminations respectively
Lamp is constituted；In described control module, master controller is computer, is programmable logic controller (PLC) from controller, FPGA
Controller is connected by SC-09 Programme Line with computer；Limit switch in described monitoring modular joins from controller through described
Connect and topple over motor, thus control compound cup and the limit travel position of firming agent material cup respectively；Pressure transducer passes through
A/D modular converter is connected with programmable logic controller (PLC), then by Programme Line, signal is passed to computer, it is achieved vacuum
The Real-time Collection of chamber pressure and monitoring；Video-frequency monitor by USB interface and computer communication realize batch mixing cup liquid level bubble with
And during cast, liquid level declines the real-time supervision of situation, joins light source illuminating lamp for improving image acquisition effect；Described execution module
In, evacuation motor, stirring motor, topple over the control line of motor and electromagnetic valve and be connected to the output of programmable logic controller (PLC)
End, and each drives motor respectively by being mechanically connected and the connection of corresponding driven object.
Embodiment two:
The present embodiment is essentially identical with embodiment three, and special feature is as follows:
The i.e. computer of master controller in described controller module receives the collection image of video-frequency monitor, by real in casing
Time situation reflect on computer display；The described pressure signal collected by pressure transducer is at A/D modular converter
Being sent to obtain programmable controller after reason, programmable controller is sent to computer by Programme Line again and is
The instruction of no stopping evacuation, then send programmable controller to control the start-stop of vacuum pump by Programme Line, it is to avoid
The maloperation caused by manual observation vacuum meter；The database access of described computer and processing parameter setting part, with manually
Data in input name query matching database obtain the control parameter of type vacuum injecting and forming, and utilize data association to be passed through to compile
Journey cable passes to the programmable controller control instruction as relevant executive component；Described computer is set by configuration software
The man-machine simulation interface of meter, Simulation Interface can show the technical process of type vacuum injecting and forming and the operation shape of each executive component in real time
State, it is simple to realize on-line monitoring；Described computer writes automatic control program and by programming electricity by specific PLC programming software
Cable downloads in programmable controller, controls actuator evacuation motor, stirring motor, topples over motor and electromagnetism valve actuation
Make；In described execution module, vacuum pump has been driven evacuation action by evacuation motor, and stirring rod has been driven by stirring motor
Becoming mixing material stirring action, firming agent material cup and compound cup have driven and have toppled over action by toppling over motor, and electromagnetic valve completes
Air inlet action realizes froth breaking or upper and lower cavity differential pressure and completes upper and lower cavity connection.
Embodiment three:
The present embodiment is essentially identical with embodiment one, and special feature is as follows:
The present embodiment as a example by preparing complex-shaped surface mould thin-walled transparent plastic article (20g), in conjunction with accompanying drawing be discussed in detail complete from
The specific implementation process of dynamic vacuum casting control system.
1. photographic head is connected with computer by USB data line, opens light source illuminating lamp.Adjust shooting angle to make to mix
Material cup liquid level shows at monitoring window comprehensively.
2. the writing and downloading of the control program of full-automatic vacuum molding machine:
Utilize programming software GX-Developer work out Automatic Control program, wherein vacuum P1 be set to-
0.095Mpa, other technological parameters such as stirring disappear with air inlet with cast mold filling interval time T0, A cup batch turning time T1, A cup return
Bubble T2, B cup dumping time T3 interval time, cast mold filling T4 and air inlet froth breaking pressure value P 2, upper lower box differential pressure value P4 cross work
Skill storehouse automatically generates.Finally by SC09 Programme Line by the Automatic Control download program that writes to PLC, simultaneously close off
Programming port, discharges serial ports of computers.
3. communication is set and correlated variables associates:
Pressure transducer and programmable logic controller (PLC) realize data communication through A/D modular converter, are detected by sensor
Vacuum tank force value Real-time Feedback to computer, it is achieved computer to the reading in real time of pressure on the number signal, PLC uses programming
Mouth communications protocol realizes the interconnection with computer.Complete whether the variable of pressure sensor value and control program stop taking out simultaneously
Vacuum, motor and whether opens solenoid valve is associated, by data base control in parametric variable and control program to strain
Amount association.
4. processing parameter setting:
According to part performance requirement to be processed, construction features, open technological data bank by man machine interface, by fuzzy
Coupling searches for the technological parameter of correspondence in technology library, and automatically generates recommendation technique.Database access and technological parameter obtain
Interface is as shown in Figure 3.
5. complete dispensing according to material proportion:
The proportion relation of firming agent and PX521HT is 100/55, is proportionally weighed by balance and pours dispensing respectively into
Cup and batch mixing cup, and material cup is fixed on cell therefor frame, mould is placed on the die frame of casting room, and will with conduit
Sprue gate and funnel couple together.
6. start full-automatic vacuum molding to operate:
Opening control Simulation Interface, turns on the power, and selects " automatic mode ", clicks on " startup ", enters full-automatic true
Empty note type operating process.Operator observes the bubble situation of actual mould material by video monitoring window, by configuration interface
Observe vacuum chamber pressure situation, monitored the ruuning situation of each executive component by Simulation Interface, as shown in Figure 4.
Embodiment four:
This full-automatic vacuum molding control method, uses the control system described in embodiment one to carry out type vacuum injecting and forming, its tool
Body rate-determining steps is as follows:
1) when entering automatic mode, illuminating lamp is opened, evacuation electric motor starting, drives vacuum pump operation start to bleed；
2) pressure transducer detects vacuum chamber pressure and in real time by the pressure variations passing in configuration, when force value reaches
During setting value (P1), the evacuation stop condition associated with pressure variations meets, and now firming agent topples over motor rotating forward drive admittedly
Agent material cup (A cup) is toppled over firming agent is imported batch mixing cup (B cup), starts stirring motor simultaneously and drives stirring rod in B cup
Material carries out mix and blend, stirs and pours into a mould mould-filling time intervalometer and start timing (TO)；
3) when A cup topple over bump against topple over limit switch time, A cup topple over motor stop rotate forward, A cup batch turning intervalometer simultaneously
(T1) unlatching carries out batch turning timing；
4) when A cup batch turning timing reaches setting value, motor reversal drive A cup return toppled over by A cup；
5) when A cup return bumps against return limit switch, A cup is toppled over motor and is stopped reversion, and A cup return disappears with air inlet simultaneously
Bubble interval timer (T2) starts；
6) when A cup return reaches setting value with air inlet foam time intervalometer, in unlatching, lower box electromagnetic valve enters
Traveling gas froth breaking, when tank pressure increases to setting value (P2), opens closedown electromagnetic valve；
7) when stirring and cast mould-filling time interval timing reach setting value, stop stirring motor, start B cup and incline
The rotating forward of falling motor is poured into a mould；
8) when B cup topple over bump against topple over limit switch time, B cup topple over motor stop rotate forward, intervalometer toppled over by B cup simultaneously
(T3) start；
9) when B cup batch turning timing reaches setting value, B cup is toppled over motor reversal and is driven B cup return, cast simultaneously to fill
Mould intervalometer (T4) starts；
10) when B cup return bumps against return limit switch, B cup is toppled over motor and is stopped reversion；
11) pattern is poured into a mould, then when pouring into a mould mold filling intervalometer and reaching setting value, in unlatching if selection pattern is non-differential pressure
Lower box electromagnetic valve, to casing pressure release, system returns to original state.
12) if selection pattern is differential pressure pours into a mould pattern, then when B cup stops reversion, flat on differential pressure dividing plate in closedown casing
Weighing apparatus electromagnetic valve, opens differential pressure electromagnetic valve simultaneously；
13) when the pressure difference of upper lower box reaches setting value (P3), close differential pressure electromagnetic valve, carry out differential pressure cast and fill
Mould；
14) when pouring into a mould mold filling intervalometer and reaching setting value, lower box electromagnetic valve and balance electricity on differential pressure dividing plate in unlatching
Magnet valve, to casing pressure release, system returns to original state.
Claims (8)
1. a full-automatic vacuum molding control system, by a control module (1), a monitoring modular (2) and an execution
Module (3) forms, and described control module (1) connects described monitoring modular (2) and performs module (3), it is characterised in that: described control
Device module (1) processed is coupled one by a master controller (9) and constitutes from controller (11)；Described monitoring modular (2) is regarded by one
Frequently monitor (4), two pressure transducers (5) and four limit switches (6) are constituted；Described execution module (3) is to be taken out by one
Vacuum motor (12) couples vacuum pump (13), stirring motor (14) couples a stirring rod (15), two topple over motor
(16) firming agent material cup (17) and compound cup (18) and five electromagnetic valves (19), illuminating lamps are coupled respectively
(20) constitute；
(1) in described control module (1), master controller (9) is computer, is programmable logic controller (PLC) from controller (11),
Programmable logic controller (PLC) is connected by SC-09 Programme Line with computer；
(2) limit switch (6) in described monitoring modular (2) topples over motor (16) through described from controller (11) connection, thus
Control compound cup (18) and the limit travel position of firming agent material cup (17) respectively；Two pressure transducers (5) are respectively placed in
Two tanks, is connected with programmable logic controller (PLC) (11) by A/D modular converter (8) up and down, then by Programme Line (10)
Signal is passed to computer, it is achieved the Real-time Collection of vacuum chamber pressure and monitoring；Video-frequency monitor (4) passes through USB interface (7)
When realizing batch mixing cup liquid level bubble and cast with computer communication, liquid level declines the real-time supervision of situation, joins light source illuminating lamp
(20) it is used for improving collection effect；
(3), in described execution module (3), evacuation motor (12), stirring motor (14), motor (16) and electromagnetic valve (19) are toppled over
Control line be connected to the outfan of programmable logic controller (PLC), and each drives motor respectively by being mechanically connected with corresponding
Driven object connect.
Full-automatic vacuum molding control system the most according to claim 1, it is characterised in that: in described controller module
Master controller (9) i.e. computer receives the collection image of video-frequency monitor (4), and real-time condition in casing being reflected, computer shows
Show on device.
Full-automatic vacuum molding control system the most according to claim 1, it is characterised in that: described by pressure transducer
(5) pressure signal collected is sent to obtain programmable controller, program controller PLC after A/D module processing
Device is sent to computer by Programme Line (10) again and whether is stopped the instruction of evacuation, then by Programme Line (10)
Send programmable controller to control the start-stop of vacuum pump, it is to avoid the maloperation caused by manual observation vacuum meter.
Full-automatic vacuum molding control system the most according to claim 3, it is characterised in that: the data base of described computer
Access and processing parameter setting part, obtain the control of type vacuum injecting and forming with the data being manually entered in name query matching database
Parameter, and utilize data association to be passed through Programme Line (10) to pass to programmable controller as relevant executive component
Control instruction.
Full-automatic vacuum molding control system the most according to claim 1, it is characterised in that: described computer passes through configuration
The man-machine simulation interface of software design, Simulation Interface can show the technical process of type vacuum injecting and forming and each executive component in real time
Running status, it is simple to realize on-line monitoring.
Full-automatic vacuum molding control system the most according to claim 1, it is characterised in that: described computer is by special
PLC programming software is write automatic control program and downloads in programmable controller by Programme Line (10), controls to perform
Mechanism's evacuation motor (12), stirring motor (14), topple over motor (16) and electromagnetic valve (19) action.
Full-automatic vacuum molding control system the most according to claim 1, it is characterised in that: in described execution module (3),
Vacuum pump (13) has been driven evacuation action, stirring rod (15) to be driven by stirring motor (14) by evacuation motor (12)
Mixing material stirring action, firming agent material cup (17) and compound cup (18) driven and toppled over action by toppling over motor (16),
Electromagnetic valve (19) completes air inlet action and realizes froth breaking or upper and lower cavity differential pressure and complete upper and lower cavity connection.
8. a full-automatic vacuum molding control method, uses full-automatic vacuum molding according to claim 1 to control system
System is controlled, it is characterised in that concrete rate-determining steps is as follows:
1) when entering automatic mode, illuminating lamp is opened, evacuation electric motor starting, drives vacuum pump operation start to bleed；
2) pressure transducer detects vacuum chamber pressure and in real time by the pressure variations passing in configuration, when force value reaches to set
During value (P1), the evacuation stop condition associated with pressure variations meets, and now motor rotating forward drive firming agent toppled over by firming agent
Expect that cup A cup is toppled over and firming agent is imported batch mixing cup B cup, start stirring motor simultaneously and drive stirring rod to the material in B cup
Carry out mix and blend, stir and pour into a mould mould-filling time intervalometer and start timing (TO)；
3) when A cup topple over bump against topple over limit switch time, A cup topple over motor stop rotate forward, A cup batch turning intervalometer (T1) is opened simultaneously
Open and carry out batch turning timing；
4) when A cup batch turning timing reaches setting value, motor reversal drive A cup return toppled over by A cup；
5) when A cup return bumps against return limit switch, A cup is toppled over motor and is stopped reversion, simultaneously when A cup return and air inlet froth breaking
Between intervalometer (T2) start；
6) when A cup return reaches setting value with air inlet foam time intervalometer, in unlatching, lower box electromagnetic valve enters
Gas froth breaking, when tank pressure increases to setting value (P2), closes electromagnetic valve；
7) when stirring and cast mould-filling time interval timing reach setting value, stop stirring motor, start B cup and topple over electricity
Machine rotates forward and pours into a mould；
8) when B cup topple over bump against topple over limit switch time, B cup topples over motor and stops rotating forward, and B cup is toppled over intervalometer (T3) and opened simultaneously
Dynamic；
9) when B cup batch turning timing reaches setting value, B cup is toppled over motor reversal and is driven B cup return, and cast mold filling is fixed simultaneously
Time device (T4) start；
10) when B cup return bumps against return limit switch, B cup is toppled over motor and is stopped reversion；
11) pour into a mould pattern if selection pattern is non-differential pressure, then when pouring into a mould mold filling intervalometer and reaching setting value, nowel in unlatching
Body electromagnetic valve, to casing pressure release, system returns to original state；
12) if selection pattern is differential pressure pours into a mould pattern, then when B cup stops reversion, balance electricity on differential pressure dividing plate in closedown casing
Magnet valve, opens differential pressure electromagnetic valve simultaneously；
13) when the pressure difference of upper lower box reaches setting value (P3), close differential pressure electromagnetic valve, carry out differential pressure cast mold filling；
14) when pouring into a mould mold filling intervalometer and reaching setting value, lower box electromagnetic valve and balanced solenoid valve on differential pressure dividing plate in unlatching,
To casing pressure release, system returns to original state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410173324.5A CN104085067B (en) | 2014-04-28 | 2014-04-28 | Full-automatic vacuum molding control system and method |
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| CN104750142B (en) * | 2015-04-15 | 2017-02-22 | 张金木 | Resin vacuum degassing secondary mixed material temperature and pressure control system |
| CN104999556B (en) * | 2015-07-10 | 2017-10-31 | 湖北北新建材有限公司 | A kind of gypsum board manufacture system automatic power-on method |
| CN108744610B (en) * | 2018-06-20 | 2021-02-02 | 深圳市众阳电路科技有限公司 | Defoaming device based on PCB developing machine |
| CN111823459A (en) * | 2020-06-23 | 2020-10-27 | 江苏敦超电子科技有限公司 | PDMS pouring system and pouring method for manufacturing micro-fluidic chip |
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| CN101670636B (en) * | 2009-09-27 | 2011-10-26 | 上海大学 | Automatic bubble eliminating system for vacuum casting and method |
| CN102009445A (en) * | 2010-09-21 | 2011-04-13 | 上海大学 | Full-automatic vacuum molding control system and method |
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