CN109483842A - A kind of control method and system of injection molding machine staged heating and heat preservation - Google Patents
A kind of control method and system of injection molding machine staged heating and heat preservation Download PDFInfo
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- CN109483842A CN109483842A CN201811296871.7A CN201811296871A CN109483842A CN 109483842 A CN109483842 A CN 109483842A CN 201811296871 A CN201811296871 A CN 201811296871A CN 109483842 A CN109483842 A CN 109483842A
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- injection molding
- molding machine
- temperature
- heating
- heat preservation
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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
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2945/76531—Temperature
Abstract
The present invention provides the control methods and system of a kind of injection molding machine staged heating and heat preservation, including step S10: be arranged injection molding machine preset threshold temperature and default holding temperature, according to the temperature gap between the preset threshold temperature and default holding temperature, several temperature rise periods are generated；S20: receiving control signal, judges that the control signal for heating signal or heat preservation signal, if heating signal, then according to the temperature rise period, carries out multistage heat temperature raising to injection molding machine；S30: if the control signal is heat preservation signal, the temperature of injection molding machine is controlled to adjust to the default holding temperature.The problem of present invention carries out stepped heat temperature raising by plastics in each heating zone to injection molding machine, improves the uncoordinated caused plastic heating overlong time of each section heating when heated, xanthochromia and stain occurs.
Description
Technical field
The present invention relates to injection molding machine field more particularly to a kind of injection molding machine staged heating with keep the temperature control method and be
System.
Background technique
Injection molding machine is also known as injection (mo(u)lding) machine or injector, it be by thermoplastic or thermosetting plastics using plastics at
Pattern has the main molding equipment that plastic products of various shapes are made.It is molded function heating of plastic, molten plastic is applied high
Pressure, project it and full of in mold cavity, wherein heating of plastic is wherein the key link.It is molded common plastic material,
Such as the melting characteristic that ABS, PVC, PP, PC, different materials have its different, melting temperature, and user is also possible to according to itself
The characteristic of product increases auxiliary material, so that therefore modified material emerges one after another, control difficulty of such injection molding machine to material temperature
It increasingly increases, especially transparent material, temperature control is bad when heated is easy to turn to be yellow, and generates stain, the product of injection molding is not
Qualification, and the material being denaturalized can also damage screw rod, cause heavy losses.
Current material temperature, which is controlled, uses PID closed-loop control in heat temperature raising, and each bringing-up section of injection molding machine is all independent control
System, is exported early period using heating with full power, after the later period enters PID control area, is exported and is controlled using PID regulator, is finally reached
The stable state of temperature；It is had a problem that during this, the heating speed of different heating section is inconsistent, and some bringing-up section temperature are straight
Line rises, and quickly reaches set temperature, but some bringing-up section temperature rise slowly, this is easy to cause material heating uneven,
For special transparent material, it is too long and turn to be yellow to will result in heating time, stain.
The Chinese patent of Publication No. CN102398356A disclose a kind of injection molding machine multistage barrel temperature control method and
System.This method comprises: temperature sensor acquires each section of barrel current actual temperature value in real time, it is sent to corresponding PID control
Module；Each pid control module obtains the temperature control error amount of each section of barrel, and it is original to calculate corresponding segment barrel electric heater
Control output valve；Temperature synchronized algorithm module obtains the actual control output valve of each section of barrel electric heater, and is sent to correspondence
The electric heater of barrel section is controlled.The program synchronizes control by the heating temperature to each section to guarantee to coordinate
Property, but error is larger in actual use.
Summary of the invention
The technical problem to be solved in the present invention is designed to provide the controlling party of a kind of injection molding machine staged heating and heat preservation
Method and system, to solve the problems, such as that each heated zones heating speed of injection molding machine is uncoordinated.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of control method of injection molding machine staged heating and heat preservation, comprising steps of
S10: be arranged injection molding machine preset threshold temperature and default holding temperature, according to the preset threshold temperature and default
Temperature gap between holding temperature generates several temperature rise periods；
S20: receiving control signal, judges the control signal for heating signal or keeps the temperature signal, if heating signal, then
According to the temperature rise period, multistage heat temperature raising is carried out to injection molding machine；
S30: if the control signal is heat preservation signal, the temperature for controlling to adjust injection molding machine is warm to the default heat preservation
Degree.
Further, the step S20 is further comprised the steps of:
S21: receiving default heating spacing parameter, every by a heating when injection molding machine carries out multistage heat temperature raising
Stage, according to the default heating spacing parameter, control the injection molding machine carry out accordingly a warming room every.
Further, it is further comprised the steps of: after the step S20
S22: when injection molding machine heats to preset threshold temperature, start carry out countdown, and judge be in countdown
It is no to receive control signal, if it is not, the temperature for then controlling the injection molding machine is down to the default holding temperature.
Further, the step S30 is further comprised the steps of:
S31: acquiring the Current Temperatures of injection molding machine, if the Current Temperatures are lower than the default holding temperature, to injection molding
Machine carries out multistage heating, until the Current Temperatures of injection molding machine reach the default holding temperature.
Further, it is further comprised the steps of: before the step S10
S00: judging whether to receive push button signalling, if so, enter step S10, if it is not, then use PID regulator with
Adjust the temperature for controlling the injection molding machine.
A kind of control system of injection molding machine staged heating and heat preservation, comprising:
Stage generation module: for be arranged injection molding machine preset threshold temperature and default holding temperature, according to described default
Temperature gap between threshold temperature and default holding temperature generates several temperature rise periods；
Heat up module: for receiving control signal, judging the control signal for heating signal or heat preservation signal, if liter
Warm signal carries out multistage heat temperature raising to injection molding machine then according to the temperature rise period；
Heat preservation module: if being to keep the temperature signal for the control signal, the temperature of injection molding machine is controlled to adjust to described pre-
If holding temperature.
Further, the system also includes:
Warming room is every control module: for receiving default heating spacing parameter, when injection molding machine carries out multistage heat temperature raising
When, it is every to control the injection molding machine according to the default heating spacing parameter by a temperature rise period and once risen accordingly
Temperature interval.
Further, the system also includes:
Countdown module: countdown is carried out for starting when injection molding machine heats to preset threshold temperature, and is judged
Whether control signal is received in countdown, if it is not, the temperature for then controlling the injection molding machine is down to the default holding temperature.
Further, the system also includes:
Multiple-stage heat-preserving control module: for acquiring the Current Temperatures of injection molding machine, if the Current Temperatures are lower than described pre-
If holding temperature, then multistage heating is carried out to injection molding machine, until the Current Temperatures of injection molding machine reach the default holding temperature.
Further, the system also includes:
Judgment module: judging whether to receive push button signalling, if so, stage generation module is gone to, if it is not, then using
PID regulator controls the temperature of the injection molding machine to adjust.
It can effectively improve each section heating of injection molding machine by stepped heat temperature raising using the present invention and not assist
The problem of tune, prevents heating material from occurring jaundice, foaming and stain during heating.
Detailed description of the invention
Fig. 1 is the control method process of a kind of injection molding machine staged heating and heat preservation that one embodiment of the present invention provides
Figure；
Fig. 2 is the control method process of a kind of injection molding machine staged heating and heat preservation that one embodiment of the present invention provides
Figure；
Fig. 3 is that a kind of injection molding machine staged heating that one embodiment of the present invention provides and the multistage heating of heat preservation are bent
Line chart；
Fig. 4 is the Control system architecture of a kind of injection molding machine staged heating and heat preservation that one embodiment of the present invention provides
Figure.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Embodiment one
With reference to Fig. 1, the control method of a kind of injection molding machine staged heating and heat preservation is present embodiments provided, comprising steps of
S10: be arranged injection molding machine preset threshold temperature and default holding temperature, according to the preset threshold temperature and default
Temperature gap between holding temperature generates several temperature rise periods；
S20: receiving control signal, judges the control signal for heating signal or keeps the temperature signal, if heating signal, then
According to the temperature rise period, multistage heat temperature raising is carried out to injection molding machine；
S30: if the control signal is heat preservation signal, the temperature for controlling to adjust injection molding machine is warm to the default heat preservation
Degree.
In injection process, melt such as plastics are heated in the barrel of injection molding machine, and the temperature of melt is added by injection molding machine
The control of hot temperature, injection molding machine have multistage barrel, and the barrel of front end heats plastics, and plastics is made to become molten state, after
The barrel at end is then connect with injection port, is up to the molten state melt conveying of set temperature to injection port to be injected, different
Heating temperature and the temperature control of the barrel of section is not identical, once the heating time appearance of the barrel of some section is stagnant
Afterwards, it will the computer heating control of adjacent barrel is influenced, and the melt in barrel is also due to situations such as lagging occurs for a long time
Heating causes melt situations such as jaundice, stain occur.
In step S10, preset threshold temperature is the set temperature of barrel, i.e., when the melt temperature in barrel reaches setting temperature
When spending, indicate that the section barrel heat temperature raising finishes.Default holding temperature is then temperature when keeping the temperature to melt, is being injected
When machine production interval, the temperature decline of melt in order to prevent, therefore default holding temperature is set to be kept the temperature, when injector again
When being injected, it is only necessary to be heated from holding temperature, be warming up to set temperature, so as to shorten the heating-up time.
Wherein, the temperature rise period can refer to Fig. 3, and Fig. 3 is a kind of temperature curve table that one embodiment provides.It is horizontal in table
Coordinate represents the time, and ordinate represents temperature, and in holding temperature, between set temperature, there are also multiple temperature rise periods.It is wherein each
The warming room thermal insulation degree of a temperature rise period can be configured, and the heating interval time after heating up can also be configured.
In step S20, when injection molding machine starts injection molding, it is necessary to which user first presses control button and comes to the plastics in barrel
Heat temperature raising is carried out, that is, issues heating signal and is controlled by temperature control system each after injection molding machine receives heating signal
Barrel carries out heat temperature raising according to the temperature rise period of setting.
In step S30, when injection molding machine stopping injection molding or when being molded interval, user can select heat preservation choosing on injection molding machine
, issuing heat preservation signal then can be to the modeling in injecting machine material tube after the temperature control system of injection molding machine receives heat preservation signal
Material is kept the temperature.
In heating by carrying out multistage heat temperature raising, each section computer heating control of injection molding machine can be changed
It is kind, avoid each section heating speed inconsistent, some zone temperatures ramps, and the rising of some zone temperatures is slowly asked
Topic prevents material heating uneven.
Embodiment two
With reference to Fig. 2, the control method of a kind of injection molding machine staged heating and heat preservation is present embodiments provided, with embodiment one
Difference with further include step S00, step S21, step S22 and step S31.
Wherein, default heating spacing parameter, when injection molding machine carries out multistage heat temperature raising, every process step S21, are received
One temperature rise period, according to the default heating spacing parameter, control the injection molding machine carry out accordingly a warming room every.
With reference to Fig. 3, the spacing parameter that heats up includes heating interval time, that is, after carrying out primary interim heating, is existed
One section of heating interval time is heated up interval time wherein heating interval time can according to need and be configured by the section, energy
It is enough further to improve the problem that heating speed is inconsistent between each barrel.
In the present embodiment, step S22, when injection molding machine heats to preset threshold temperature, start to carry out countdown, and
Judge control signal whether is received in countdown, if it is not, the temperature for then controlling the injection molding machine is down to the default heat preservation temperature
Degree.
When injection molding machine carries out heat temperature raising to the material in barrel, after temperature reaches preset threshold temperature, indicate
Heated to finish, if being further continued for heating or being maintained under preset threshold temperature at this time, material is easy to be affected by temperature, and generates hair
Situations such as Huang, stain.Wherein control signal is operation signal of user's operation injection molding machine, including injection molding signal etc., works as injection molding machine
When being not received by the operation signal of user in countdown, the material in automatic feeding cylinder is kept the temperature.
In the present embodiment, the Current Temperatures of injection molding machine step S31, are acquired, if the Current Temperatures are lower than the default guarantor
Temperature then carries out multistage heating to injection molding machine, until the Current Temperatures of injection molding machine reach the default holding temperature.
Wherein, step S31 be embodiment one in step S30 another embodiment, when in injection molding machine material it is current
When temperature is lower than default holding temperature, injection molding machine there are no initially entering in injection molding operating condition, needs to carry out material at this time at this time
Multistage heating, i.e., by multistage heating, situations such as to guarantee that material is heated evenly, material is avoided to be denaturalized.
In the present embodiment, step S00, judge whether to receive push button signalling, if so, S10 is entered step, if it is not, then
PID regulator is used to adjust the temperature for controlling the injection molding machine.
When material is special transparent material, when being easy to happen flavescence in long-time heating, user can lead to
The key crossed on pressing injection molding machine triggers push button signalling, so that injection molding machine be made to enter in step S10, is heated up using staged
With the method for heat preservation, situations such as preventing material from turning yellow, and if the non-special transparent material of material, it can be using conventional
PID regulator control is adjusted to the heating temperature in injecting machine material tube.
By be arranged countdown function, can be realized and jump heat preservation automatically, prevent injection molding machine produce be molded off time compared with
In the case where length, the problem of denaturation in production temperature of material over time.User also facilitates according to different simultaneously
Material selects different temprature control methods, facilitates operation processing.
Embodiment three
With reference to Fig. 4, the control system of a kind of injection molding machine staged heating and heat preservation is present embodiments provided, comprising:
Stage generation module 41: for be arranged injection molding machine preset threshold temperature and default holding temperature, according to described pre-
If the temperature gap between threshold temperature and default holding temperature generates several temperature rise periods；
Heating module 42: for receiving control signal, judging the control signal for heating signal or keeping the temperature signal, if
Heat up signal, then according to the temperature rise period, carries out multistage heat temperature raising to injection molding machine；
Heat preservation module 43: if being to keep the temperature signal for the control signal, the temperature of injection molding machine is controlled to adjust to described
Default holding temperature.
Injection molding machine generally has human-computer interaction interface and temperature control system, and human-computer interaction is used to receive user's input
Instruction, temperature control system can then control the temperature of material in injecting machine material tube according to corresponding instruction.
Stage generation module 41 is arranged in injection molding machine, and user inputs preset threshold temperature in human-computer interaction interface as needed
Degree and default holding temperature, injection machine system generate multiple temperature rise periods according to the data that user inputs, can refer to Fig. 3, use
Heating interval time and warming temperature interval can also be arranged in family by human-computer interaction interface again.
Heating module 42 and heat preservation module 43 are all set in injection molding machine, when user passes through the interpersonal interactive boundary of injection molding machine
After face operation issues control signal, injection molding machine selects to be heated up or kept the temperature behaviour accordingly according to the type of control signal
Make.
In the present embodiment, further includes warming room every control module 43, for receiving default heating spacing parameter, work as injection molding machine
It is every that the injection molding is controlled according to the default heating spacing parameter by a temperature rise period when carrying out multistage heat temperature raising
Machine carry out accordingly a warming room every.
Wherein warming room is set in injection molding machine every control module 44, and user inputs default heating by human-computer interaction interface
After spacing parameter, the heat temperature raising that warming room controls injection molding machine according to the heating spacing parameter every control module 44, control
It is every by temperature rise period carry out a warming room every.
It further include countdown module 45, for opening when injection molding machine heats to preset threshold temperature in the present embodiment
Begin to carry out countdown, and judge whether receive control signal in countdown, if it is not, the temperature for then controlling the injection molding machine is down to
The default holding temperature.
It further include multiple-stage heat-preserving control module 46, the Current Temperatures for acquiring injection molding machine, if described in the present embodiment
Current Temperatures are lower than the default holding temperature, then carry out multistage heating to injection molding machine, until the Current Temperatures of injection molding machine reach
To the default holding temperature.
In the present embodiment, further include judgment module 40, judge whether to receive push button signalling, if so, it is raw to go to the stage
At module, if it is not, using PID regulator then to adjust the temperature for controlling the injection molding machine.
Multiple-stage heat-preserving control module 46 and judgment module 40 are all set in injection molding machine, while can be received user and be existed
The operation signal of injection molding machine human-computer interaction interface, and corresponding operation processing is carried out according to operation signal.
By the way that multiple modules are arranged, processing operation is carried out according to the different demands of user, improve injection molding machine uses body
It tests and user-friendly operation.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of control method of injection molding machine staged heating and heat preservation, which is characterized in that comprising steps of
S10: be arranged injection molding machine preset threshold temperature and default holding temperature, according to the preset threshold temperature and default heat preservation
Temperature gap between temperature generates several temperature rise periods；
S20: receiving control signal, judge that the control signal is to heat up signal or to keep the temperature signal, if the signal that heats up, then basis
The temperature rise period carries out multistage heat temperature raising to injection molding machine；
S30: if the control signal is heat preservation signal, injection molding machine is heated, injection molding machine temperature is adjusted to described pre-
If holding temperature.
2. the control method of a kind of injection molding machine staged heating and heat preservation according to claim 1, which is characterized in that described
Step S20 is further comprised the steps of:
S21: receiving default heating spacing parameter, every to pass through a temperature rise period when injection molding machine carries out multistage heat temperature raising,
According to the default heating spacing parameter, control the injection molding machine carry out accordingly a warming room every.
3. the control method of a kind of injection molding machine staged heating and heat preservation according to claim 1, which is characterized in that described
It is further comprised the steps of: after step S20
S22: when injection molding machine heats to preset threshold temperature, start to carry out countdown, and judge whether connect in countdown
Control signal is received, if it is not, the temperature for then controlling the injection molding machine is down to the default holding temperature.
4. the control method of a kind of injection molding machine staged heating and heat preservation according to claim 1, which is characterized in that described
Step S30 is further comprised the steps of:
S31: acquiring the Current Temperatures of injection molding machine, if the Current Temperatures be lower than the default holding temperature, to injection molding machine into
Row multistage heating, until the Current Temperatures of injection molding machine reach the default holding temperature.
5. the control method of a kind of injection molding machine staged heating and heat preservation according to claim 1, which is characterized in that described
It is further comprised the steps of: before step S10
S00: judging whether to receive push button signalling, if so, S10 is entered step, if it is not, then using PID regulator to adjust
Control the temperature of the injection molding machine.
6. a kind of control system of injection molding machine staged heating and heat preservation characterized by comprising
Stage generation module: for be arranged injection molding machine preset threshold temperature and default holding temperature, according to the preset threshold
Temperature gap between temperature and default holding temperature generates several temperature rise periods；
Heat up module: for receiving control signal, judging that the control signal for heating signal or heat preservation signal, is believed if heating
Number, then according to the temperature rise period, multistage heat temperature raising is carried out to injection molding machine；
Heat preservation module: if being to keep the temperature signal for the control signal, the temperature of injection molding machine is controlled to adjust to the default guarantor
Temperature.
7. the control system of a kind of injection molding machine staged heating and heat preservation according to claim 6, which is characterized in that described
System further include:
Warming room is every control module: for receiving default heating spacing parameter, when injection molding machine carries out multistage heat temperature raising, often
It controls the injection molding machine according to the default heating spacing parameter by a temperature rise period and carries out a warming room accordingly
Every.
8. the control system of a kind of injection molding machine staged heating and heat preservation according to claim 6, which is characterized in that described
System further include:
Countdown module: countdown is carried out for starting when injection molding machine heats to preset threshold temperature, and judges to fall to count
When it is interior whether receive control signal, if it is not, the temperature for then controlling the injection molding machine is down to the default holding temperature.
9. the control system of a kind of injection molding machine staged heating and heat preservation according to claim 6, which is characterized in that described
System further include:
Multiple-stage heat-preserving control module: for acquiring the Current Temperatures of injection molding machine, if the Current Temperatures are lower than the default guarantor
Temperature then carries out multistage heating to injection molding machine, until the Current Temperatures of injection molding machine reach the default holding temperature.
10. the control system of a kind of injection molding machine staged heating and heat preservation according to claim 6, which is characterized in that institute
State system further include:
Judgment module: judging whether to receive push button signalling, if so, stage generation module is gone to, if it is not, then using PID tune
Device is saved to adjust the temperature for controlling the injection molding machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811296871.7A CN109483842B (en) | 2018-11-01 | 2018-11-01 | Control method and system for stepwise temperature rise and heat preservation of injection molding machine |
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| CN201811296871.7A CN109483842B (en) | 2018-11-01 | 2018-11-01 | Control method and system for stepwise temperature rise and heat preservation of injection molding machine |
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Cited By (4)
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| CN110124594A (en) * | 2019-06-03 | 2019-08-16 | 常州瑞曦生物科技有限公司 | Fine chemistry industry temperature of reaction kettle control method |
| CN115494889A (en) * | 2021-10-15 | 2022-12-20 | 义乌市绘海科技有限公司 | Extrusion temperature control system and method for corrugated pipe extruder |
| WO2023082862A1 (en) * | 2021-11-10 | 2023-05-19 | 上海微创惟美医疗科技(集团)有限公司 | Temperature control method and apparatus for medical instrument, and therapeutic apparatus |
| CN117207470A (en) * | 2023-10-09 | 2023-12-12 | 武汉瑞之源塑业有限公司 | Servo control method and system based on Internet of things |
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|---|---|
| CN109483842B (en) | 2020-04-07 |
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