CN103482099B - Accurate quantitative control system and control method thereof during lotion is filling - Google Patents
Accurate quantitative control system and control method thereof during lotion is filling Download PDFInfo
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- CN103482099B CN103482099B CN201310395748.1A CN201310395748A CN103482099B CN 103482099 B CN103482099 B CN 103482099B CN 201310395748 A CN201310395748 A CN 201310395748A CN 103482099 B CN103482099 B CN 103482099B
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Abstract
The present invention disclose lotion filling in accurately quantitative control system and method thereof, pressure unit, Constant-temp. pipeline and the control unit comprise filling machine, being arranged on feed pipe, the present invention utilizes the lotion transient pressure of pressure unit monitoring feed pipe, and by this pressure feedback in control unit, control unit is according to the lotion pressure parameter received, adopt PID servo regulative mode, constantly revise the speed of the filling motor of the filling machine of setting in system, realize movement tendency automatically to control, thus control filling volume more accurately, namely avoid the speed that traditional filling machine sets filling motor and valve driving motor carries out filling, when occurring that filling capacity is inaccurate, than the filling capacity producing delayed more than ten bottles, thus cause producing waste, production efficiency reduces, the problem that cost increases. the present invention is by PID control, and the motor speed of continuous correction system, regulates dynamically, regulates the filling capacity of bulking system more in time.
Description
Technical field
The invention belongs to quantitative filling technical field, be specifically related to a kind of lotion filling in accurately quantitative control system and control method thereof.
Background technology
Fluid quantitative is filling, in daily use chemicals industry very common, generally speaking, lotion viscosity is when below 500CP, and quantitative filling substantially can be accurately quantitative, but the mobility of full-bodied lotion is poor, lotion contains composition or the resultant of high saturated vapor pressure, in high-speed canning, it is easy to produce vapour bubble, form cavity, thus have impact on filling capacity and the quality of product.
Traditional packaging process sets filling speed in filling machine, namely the filling of lotion is carried out, weight test is carried out again after completing sealing, cutting tail operation, and now, produce there is the distance of more than 10 bottle time filling with filling machine, cause quality monitoring delayed, the efficiency that impact is produced, fraction defective height, waste material and manpower.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of quantitatively accurately, monitor lotion timely filling in accurately quantitative control system and control method thereof.
In order to solve the problem, the present invention is achieved by following technical scheme:
Accurate quantitative control system during lotion of the present invention is filling, the pressure unit comprise filling machine, being arranged on feed pipe and control unit;
Described filling machine comprises storage device and the mechanical adjusting mechanism for regulating filling capacity;
Described pressure unit, for testing the transient pressure of lotion in feed pipe, and feeds back to control unit by the pressure data tested;
Described control unit receives the pressure parameter of pressure unit transmission, is processed by pressure parameter, regulates the mechanical adjusting mechanism of filling machine according to pressure data, thus controls filling capacity more accurately.
Further, being provided with the Constant-temp. pipeline guaranteeing lotion stable viscosity in pipeline in described feed pipe, be provided with temperature control equipment in described Constant-temp. pipeline, described temperature control equipment is connected with control unit.
Further, during lotion is filling, accurate quantitative control system is also provided with weight test set, for test quantitative cavity volume filling after weight, the product weight tested is fed back to control unit by described weight test set, and the filling amount of filling machine is regulated and controled further by control unit according to product weight parameter.
Further, the storage device of described filling machine being provided with feed supplementing device, for the lotion amount of the storage device of supplementary filling machine, described feed supplementing device is connected with control unit.
The control method of accurate quantitative control system during lotion of the present invention is filling, comprises the following steps:
(1) speed of filling machine valve driving motor and the speed of filling motor is set on the control unit according to the capacity of lotion viscosity and quantitative cavity volume, filling machine valve driving motor passes through the opening time of cam production material inlet valve, the speed of the speed control lotion flowing of described filling motor;
(2) the filling machine operation of filling machine, to the filling lotion of quantitative cavity volume;
(3) by the transient pressure of the pressure unit monitoring lotion in the feed pipe being arranged on quantitative cavity volume;
(4) pressure unit by pressure transmission when measuring each state of lotion in the feed pipe of quantitative cavity volume to control unit;
(5) control unit receives lotion pressure, the speed of the filling motor of the filling machine constantly set in Correction and Control unit, thus accurately controls filling volume.
Further, in described step (3) pressure unit test each filling time hydrodynamicpressure be divided into four-stage, respectively:
First stage pressure: lotion starts to enter the instantaneous pressure of quantitative cavity volume, and lotion proceeds to flow state by stationary state, according to the principle Bernoulli equation of hydromeehanics, hydrodynamicpressure now has downward tendency;
Subordinate phase pressure: enter at lotion and determine in the process of volumetric capacity chamber, lotion has the time of one section of balance flowing, and pressure ratio now is relatively steady, but the principle according to hydromeehanics, pressure parameter now is steady but on the low side;
Phase III pressure: stop flowing moment at lotion, lotion, under inertia effect, inherently produces fluid and hits effect, and the pressure now monitored must have tendency upwards;
Fourth stage pressure: lotion is just static after charging stops, now pressure stores up doses decision by storage device;
When the pressure parameter of the four-stage tested is delivered to control unit, utilize synchronous time parameter that pressure data is carried out staging treating.
Further, the pressure data in each stage that described control unit arrives according to test, regulates and controls each position of system;
Described control unit is according to the pressure parameter of first stage, if the pressure parameter in this stage is compared with when stopping charging, beyond the pressure difference set in advance, then show and in lotion, bubble may occur, now should reduce the speed of the filling motor of filling machine, to ensure product-filled quality.
Described control unit, according to the pressure parameter of subordinate phase, can be used as the indirect reference of product in feed pipe temperature, and pressure is on the low side, shows that temperature is on the low side, and resistance is big, therefore, can regulate the temperature of Constant-temp. pipeline in feed-pipe according to this pressure parameter.
If the pressure parameter of phase III is too high, when showing filling machine valve closes, buffering may have fault or machine debugging inappropriate, and serviceman should be reminded to detect the valve working state of filling machine.
Described control unit is according to the pressure parameter of fourth stage, and the storage doses of monitoring storage device, storage doses control feed supplementing device according to storage device the need of feed supplement or stops feed supplement to storage device simultaneously.
Further, weight data after the quantitative cavity volume that described control unit is tested according to weight test set is filling, by PID servocontrol, it is achieved movement tendency controls automatically, revise the speed of the filling motor of filling machine further, make filling capacity more accurate.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is by the pressure parameter of the four-stage of circulation during test filling machine quantitative filling quantitative cavity volume, and these four groups of pressure parameters are distinguished and be used, the pressure parameter of different steps correspond to the working order at each position of filling machine, pressure parameter according to each stage, by measuring its pressure difference, resistance and feed time, the filling volume that accurately control filling machine is each.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is the systematic schematic diagram realizing the present invention's use;
Wherein: 1-feed supplementing device; 2-storage device, 3-Constant-temp. pipeline, 4-pressure unit, 5-mechanical adjusting mechanism, the quantitative cavity volume of 6-, 7-weight test set, 8-control unit.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, it will be appreciated that preferred embodiment described herein, only for instruction and explanation of the present invention, is not intended to limit the present invention.
As shown in Figure 1, realize lotion of the present invention filling in the system of accurate quantitative control methodin, comprise filling machine, it is arranged on feed supplementing device 1 and the control unit 8 of filling machine front end, described filling machine comprises storage device 2 and mechanical adjusting mechanism 5, described control unit comprises PLC, PID servo regulative mode is adopted to be regulated and controled by filling machine, thus control the capacity of the filling paste product of filling machine, described mechanical adjusting mechanism 5 includes the valve driving motor of control valve opening time, described drive-motor is by control cam, thus control the time of valve opening, the filling motor of described control lotion velocity of flow, described filling motor is servomotor.
Described control unit is provided with memory, feed pipe between the storage device 2 of described filling machine and quantitative cavity volume 6 is provided with Constant-temp. pipeline 3 and pressure unit 4, the lotion pressure transmission that test is arrived by described pressure unit 4 is to control unit 8, Constant-temp. pipeline 3 and feed supplementing device 1, according to the pressure parameter received, are regulated by described control unit 8 respectively.
Described system end is also provided with Weight-measuring device 7, described Weight-measuring device 7 is connected with control unit 8, feeding back on control unit 8 in time by measuring the weight obtaining product, control unit 8, according to the weight of product, adjusts the every time filling volume of filling machine again.
During lotion of the present invention is filling, the control method of accurate quantitative control system is:
1) set the speed of filling machine valve driving motor according to the capacity of lotion viscosity and quantitative cavity volume on the control unit, thus control the time that material inlet valve is opened, set the speed of filling servomotor, thus control filling capacity more accurately;
2) filling machine valve opening, the filling motor of filling machine is to filling lotion in quantitative cavity volume.
3) transient pressure of the lotion in the feed pipe of quantitative cavity volume tested by pressure unit, and pressure transmission test arrived is to control unit, stores.
4) pressure of the lotion that control unit monitors according to pressure unit, controls the speed of the filling motor of filling machine by PID servocontrol device.
5) Operation system setting weight test set, for measuring the weight after the filling lotion of quantitative cavity volume, the product weight measured is fed back in control unit by weight test set, control unit process weight parameter, again regulate the speed of the filling motor of filling machine, by double check, control the filling volume of filling machine more accurately.
6) transient pressure that each filling circulation of lotion tested by described pressure unit is divided into four-stage, respectively:
First stage pressure: lotion starts to enter the moment of quantitative cavity volume, and lotion proceeds to flow state by stationary state, according to the principle Bernoulli equation of hydromeehanics, hydrodynamicpressure now has downward tendency;
Subordinate phase pressure: entering at lotion and determine in the process of volumetric capacity chamber, lotion has the time of one section of smooth flow, pressure ratio now is relatively steady, but the principle according to hydromeehanics, pressure parameter now is steady but on the low side;
Phase III pressure: stop flowing moment at lotion, lotion, under inertia effect, inherently produces fluid and hits effect, and the pressure now monitored must have tendency upwards;
Fourth stage pressure: lotion is just static after charging stops, now pressure stores up doses decision by storage device;
The pressure parameter of four-stage in each circulation above-mentioned is transferred to control unit by pressure unit, and the pressure data in each stage is carried out staging treating, control each position of filling machine for the pressure data of four-stage respectively, thus reach the volume that accurately control is filling.
7) pressure data of first stage, according to fluid mechanics principle: fluid velocity is more big, pressure is more little, so this pressure parameter reflection is the speed of paste product in stage, if pressure difference is beyond the value set in advance, then show and may occur in product now should reducing the speed of the filling motor of filling machine by bubble, to ensure product-filled quality.
8) pressure data of subordinate phase, what reflect is the resistance of lotion, the viscosity height of lotion, in flowing, resistance is just big, and the viscosity of lotion has certain relation with temperature, therefore the temperature of feed pipe can be controlled according to the pressure difference of subordinate phase, if the pressure parameter of subordinate phase is on the low side, shows that resistance is big, the temperature of feed pipe should be improved, the flow of hot water in Constant-temp. pipeline can be strengthened, or improve the temperature of hot water in Constant-temp. pipeline.
9) pressure data of phase III, what reflect is the response speed that filling machine stops filling lotion, if the pressure parameter of phase III is too high, when showing the valve closes of filling machine, buffering may have fault, and now serviceman should check the valve working situation of filling machine according to this parameter.
10) pressure data of fourth stage, now lotion is static, if pressure parameter is too low or too high, represent that the storage doses of the storage device of filling machine is abnormal, control unit according to the pressure parameter of fourth stage, can control feed supplementing device and the need of supplementing lotion to storage device or stop supplementing lotion.
In adopting lotion filling described in the present embodiment, other structure of accurate quantitative control system and control method thereof is see prior art.
The above, it it is only the better embodiment of the present invention, not the present invention is done any restriction in form, therefore every do not depart from technical solution of the present invention content, any amendment, equivalent variations and the modification above embodiment done according to the technical spirit of the present invention, all still belongs in the scope of technical solution of the present invention.
Claims (9)
1. a lotion filling in accurate quantitative control system, it is characterised in that: the pressure unit comprise filling machine, being arranged on feed pipe and control unit;
Described filling machine comprises storage device and the mechanical adjusting mechanism for regulating filling capacity;
Described pressure unit, for testing the pressure of the four-stage of lotion in feed pipe,
It is respectively first stage pressure: lotion starts to enter the moment of quantitative cavity volume, pressure when lotion proceeds to flow state by stationary state;
Subordinate phase pressure: enter in the process of quantitative volumetric capacity chamber at lotion, pressure during lotion smooth flow;
Phase III pressure: the moment stopping flowing at lotion, lotion, under inertia effect, produces the pressure that the fluid effect of hitting produces;
Fourth stage pressure: lotion charging stop after, pressure time static;
And the pressure data tested is fed back to control unit;
Described control unit receives the pressure parameter of pressure unit transmission, is processed by pressure parameter, regulates the mechanical adjusting mechanism of filling machine according to pressure data, thus controls filling capacity more accurately;
Being provided with the Constant-temp. pipeline guaranteeing lotion stable viscosity in pipeline in described feed pipe, be provided with temperature control equipment in described Constant-temp. pipeline, described temperature control equipment is connected with control unit.
2. according to claim 1 lotion filling in accurate quantitative control system, it is characterized in that: during lotion is filling, accurate quantitative control system is also provided with weight test set, for test quantitative cavity volume filling after weight, the product weight tested is fed back to control unit by described weight test set, and the filling amount of filling machine is regulated and controled further by control unit according to product weight parameter.
3. according to claim 1 lotion filling in accurate quantitative control system, it is characterised in that: being provided with feed supplementing device on the storage device of described filling machine, for the lotion amount of the storage device of supplementary filling machine, described feed supplementing device is connected with control unit.
4. according to claim 1 lotion filling in the control method of accurate quantitative control system, it is characterised in that: described quantitative control methodin comprises the following steps:
(1) speed of filling machine valve driving motor and the speed of filling motor is set on the control unit according to the capacity of lotion viscosity and quantitative cavity volume, filling machine valve driving motor passes through the opening time of cam production material inlet valve, the speed of the speed control lotion flowing of described filling motor;
(2) the filling machine operation of filling machine, to the filling lotion of quantitative cavity volume;
(3) by the transient pressure of the pressure unit monitoring lotion in the feed pipe being arranged on quantitative cavity volume;
(4) pressure unit by pressure transmission when measuring each state of lotion in the feed pipe of quantitative cavity volume to control unit;
(5) control unit receives lotion pressure, the speed of the filling motor of the filling machine constantly set in Correction and Control unit, thus accurately controls filling volume;
In described step (3) pressure unit test each filling time hydrodynamicpressure be divided into four-stage, respectively:
First stage pressure: lotion starts to enter the moment of quantitative cavity volume, pressure when lotion proceeds to flow state by stationary state;
Subordinate phase pressure: enter in the process of quantitative volumetric capacity chamber at lotion, pressure during lotion smooth flow;
Phase III pressure: the moment stopping flowing at lotion, lotion, under inertia effect, produces the pressure that the fluid effect of hitting produces;
Fourth stage pressure: lotion charging stop after, pressure time static;
When the pressure parameter of the four-stage tested is delivered to control unit, utilize synchronous time parameter that pressure data is carried out staging treating.
5. control method according to claim 4, it is characterised in that: described control unit, according to the pressure parameter of first stage, regulates the speed of the filling motor of filling machine.
6. control method according to claim 4, it is characterised in that: described control unit, according to the pressure parameter of subordinate phase, regulates the temperature of Constant-temp. pipeline in feed-pipe.
7. control method according to claim 4, it is characterised in that: according to the pressure parameter of phase III, the valve working state of detection filling machine.
8. control method according to claim 4, it is characterised in that: described control unit, according to the pressure parameter of fourth stage, monitors the storage doses of storage device in filling machine.
9. control method according to claim 4, it is characterised in that: the weight data after the quantitative cavity volume that described control unit is tested according to weight test set is filling, by PID servocontrol, revise the speed of the filling motor of filling machine further.
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| CN201310395748.1A CN103482099B (en) | 2013-09-03 | 2013-09-03 | Accurate quantitative control system and control method thereof during lotion is filling |
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| CN201310395748.1A CN103482099B (en) | 2013-09-03 | 2013-09-03 | Accurate quantitative control system and control method thereof during lotion is filling |
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| CN103482099B true CN103482099B (en) | 2016-06-08 |
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| CN103869797B (en) * | 2014-03-31 | 2016-05-25 | 立白日化有限公司 | A kind of intelligent management system of filling production lines |
| CN106113312A (en) * | 2016-08-23 | 2016-11-16 | 鹤山联塑实业发展有限公司 | A kind of organotin automatic adding device and detection monitoring method |
| DE102017130034A1 (en) * | 2017-12-14 | 2019-06-19 | Krones Ag | Method and device for filling a filling product |
| CN108275637A (en) * | 2018-03-28 | 2018-07-13 | 长春工业大学 | A kind of essential oil bottle placer and its accurate quantification control method |
| DE102019128324A1 (en) * | 2019-10-21 | 2021-04-22 | Krones Ag | Device and method for filling a container with a filling product |
| CN111661378A (en) * | 2020-05-19 | 2020-09-15 | 多派工业技术(上海)有限公司 | Quantitative online feedback system and method for automatic packaging machine |
| CN115193342B (en) * | 2022-07-04 | 2024-04-05 | 中国科学院过程工程研究所 | Method for stabilizing slurry state material flow, device for realizing same and application |
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| EP0989062A1 (en) * | 1998-09-25 | 2000-03-29 | Robert Bosch Gmbh | Device for filling a pressurized pharmaceutical liquid in a package |
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