CN108839377A - Dry granulating machine tableting pressure control system and method - Google Patents
Dry granulating machine tableting pressure control system and method Download PDFInfo
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- CN108839377A CN108839377A CN201810509425.3A CN201810509425A CN108839377A CN 108839377 A CN108839377 A CN 108839377A CN 201810509425 A CN201810509425 A CN 201810509425A CN 108839377 A CN108839377 A CN 108839377A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/005—Control arrangements
- B30B11/006—Control arrangements for roller presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/14—Control arrangements for mechanically-driven presses
- B30B15/148—Electrical control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/26—Programme control arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The present invention relates to a kind of dry granulating machine tableting pressure control system and methods, pressure sensor measures real-time platen pressure P1, enabled module drive roller gap adjustment servo motor is to adjust roller gap or driving feeding speed control servo motor to adjust feeding speed, control module sets pressure roller primary clearance S0, set initial pressure P0, initial feed speed V0, the pressure increase upper limit of permission is △ H, it is △ L that pressure, which is reduced lower limit, the Pressure maximum value of permission is H, low pressure limit value is L, dynamic pressure difference determination module obtains dynamic pressure difference △ P, judge section locating for △ P, in △ L<△P<It when △ H, is run by current feeding speed, current roller gap, is working as △ P>△H,△P<△ L and when this state for time being maintained to be more than duration t0, roller gap adjusts servo motor and adjusts roller gap, or control feeding speed control servo motor to adjust feeding speed.Have the advantages that control is reliable and stable.
Description
Technical field
The present invention relates to automation control areas, are specifically tablettings when powder squeezes operation in flakes on dry granulating machine
The control system of pressure automatic adjustment.
Background technique
Existing dry granulating machine pressure controling mode：Hydraulic station is loaded inside equipment, it is outer to pressure roller application by hydraulic press
Power, by medicinal powder tabletting.In the case where external pressure, pressure roller revolving speed are certain, delivery rate is faster, acts on the pressure on pressure roller
It is bigger；Gap is smaller, and the pressure acted on pressure roller is bigger.
The control is a kind of opened loop control, under the control mode, with charging medicinal powder amount, the unstable variation of external pressure, is made
Non-constant used in platen pressure, Density inhomogeneity after medicinal powder is tabletted, consistency is poor, and one time yield is lower.
Summary of the invention
Objects of the present invention：To overcome defect of the existing technology, the present invention provides a kind of tableting pressure closed loop control
System, tableting pressure consistency good dry granulating machine tableting pressure control system and method.
To achieve the above object, the present invention provides following technical solutions：
A kind of dry granulating machine tableting pressure control system, including pressure sensor, for real-time between real-time measurement pressure roller
Platen pressure P1,
Roller gap adjusts servo motor or feeding speed controls servo motor,
Enabled module, driving roller gap adjustment servo motor is to adjust roller gap or driving feeding speed control servo electricity
Machine to adjust feeding speed,
Control module sets pressure roller primary clearance S0, sets initial pressure P0, initial feed speed V0, the pressure increment of permission
The upper limit is △ H, and it is △ L that pressure, which is reduced lower limit, and the Pressure maximum value of permission is H, low pressure limit value L, control module and enabled
Module connection,
Dynamic pressure difference determination module, connect with control module, pressure sensor, the real-time platen pressure P1 of real-time detection and setting
The difference of pressure P0 simultaneously obtains dynamic pressure difference △ P, judges section locating for △ P, △ P<L, △ P>H, △ L<△P<△ H,
And △ L is obtained in dynamic pressure difference determination module<△P<When △ H, run by current feeding speed, current roller gap,
Working as △ P>△H,△P<When △ L, and maintain this state for time be more than dynamic pressure difference determination module setting it is lasting when
Between t0 when, control module controls enabled module starting and adjusts roller gap to drive roller gap adjustment servo motor, or
Enabled module starting is controlled to drive feeding speed control servo motor to adjust feeding speed.
Preferably, the control module is pid control module, and pid control module passes through V1=PID（V0, △ P）It is adjusted
Whole feeding speed V1, control module drive enabled module starting feeding speed control servo motor to adjust feeding speed V1 fortune
Row, the real-time platen pressure P1 after variation feeds back to control module by pressure sensor, until adjusting to meeting △ L<△P<△
H, adjustment are completed.
Preferably, the control module is linearization block, and linearization block passes through S1=SCALE（S0, △ P）It is adjusted
Whole gap S1, according to pressure difference △ P calibration compensation gap △ S inside linearization block, as △ P>△ H, accumulates under this condition
When time is more than t0, control module increases clearance distance according to compensation △ S, and calculation formula is S1=S0+n* △ S, and n is compensation system
The number factor；As △ P<△ L, when the time for accumulating under this condition is more than t0, control module reduces clearance distance according to compensation △ S,
Calculation formula is S1=S0-n* △ S, and n is the penalty coefficient factor, control enabled module starting roller gap adjustment servo motor with
Roller gap S1 operation is adjusted, the real-time platen pressure P1 after variation is fed back to control module by pressure sensor, until adjustment
To meeting △ L<△P<△ H, adjustment are completed.
Preferably, the pressure sensor is full-bridge foil gauge, is connect by amplifier with dynamic pressure difference determination module.
It preferably, further include disorderly closedown protective module, disorderly closedown protective module determines locating for real-time platen pressure P1
Section, as P 1>H or P1<When L, disorderly closedown protective module controls equipment downtime maintenance.
The present invention also provides a kind of dry granulating machine tableting pressure control methods, including：Pressure roller initial pressure P0 is set, is permitted
Perhaps pressure increase upper limit is △ H, and it is △ L that pressure, which is reduced lower limit, and the Pressure maximum value of permission is H, low pressure limit value L, step
Rapid one, with the initial feed speed V0 of setting, pressure roller primary clearance S0 starting device；
Step 2 obtains the real-time platen pressure P1 of pressure roller, more real-time platen pressure P1 and initial pressure P0 and obtains dynamic pressure
Power difference △ P judges section locating for dynamic pressure difference △ P, △ P<L, △ P>H, △ L<△P<△ H,
As △ L<△P<When △ H, run by current feeding speed, current roller gap；
As △ P>△H,△P<When △ L, and duration be more than setting duration t0 when, carry out pressure adjustment；
Step 3, pressure adjustment：Pass through V1=PID（V0, △ P）Adjustment feeding speed V1 is obtained, and to adjust feeding speed V1 fortune
Row；Or pass through S1=SCALE（S0, △ P）It obtains and adjusts gap S1, according to pressure difference △ P calibration compensation inside linearization block
Gap △ S, as △ P>△ H, when the time for accumulating under this condition is more than t0, control module increases clearance distance according to compensation △ S,
Calculation formula is S1=S0+n* △ S, and n is the penalty coefficient factor；As △ P<△ L, when the time for accumulating under this condition is more than t0, control
Molding root tuber reduces clearance distance according to compensation △ S, and calculation formula is S1=S0-n* △ S, and n is the penalty coefficient factor, and with adjustment
Roller gap S1 operation；
Step 4 repeats Step 2: step 3 operation is until △ L<△P<△H；Complete pressure adjustment.
The invention has the advantages that：According to the platen pressure for implementing monitoring, determined using pressure difference section
Mode feeding speed or pressure roll gap are adjusted, realize closed-loop control so that the pressure of real-time measurement is being set
In the range of pressure allows, guarantee that platen pressure maintains stable state, so that the even density of tabletting, consistency is good；Have
Adjust the accurate reliable advantage of reliable and stable and control.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without any creative labor, according to
These attached drawings obtain other attached drawings and still fall within scope of the invention.
Detailed description of the invention
Fig. 1 is flow diagram of the invention；
Fig. 2 is the flow diagram of feed adjustment control mode；
Fig. 3 is the flow diagram that gap adjusts control mode；
Fig. 4 is that feed adjusts lower pressure and feeding speed real-time curve chart；
Fig. 5 is that gap adjusts lower pressure and gap real-time curve chart.
Specific embodiment
Referring to attached drawing 1 ~ 5, a kind of dry granulating machine tableting pressure control system disclosed by the invention, including pressure sensing
Device, for the real-time platen pressure P1 between real-time measurement pressure roller,
Roller gap adjusts servo motor, for adjusting roller gap, and at the beginning of the pressure roller run in equipment initial start
Beginning gap S0, or and feeding speed control servo motor, for adjusting the feeding speed into material between pressure roller, and setting
With initial feed speed V0 operation when standby initial start；
Enabled module, driving roller gap adjustment servo motor is to adjust roller gap or driving feeding speed control servo electricity
Machine is to adjust feeding speed；
Control module sets pressure roller primary clearance S0, sets initial pressure P0, initial feed speed V0, the pressure increment of permission
The upper limit is △ H, and it is △ L that pressure, which is reduced lower limit, and the Pressure maximum value of permission is H, low pressure limit value L, control module and enabled
Module connection,
Dynamic pressure difference determination module, connect with control module, pressure sensor, the real-time pressure roller that will be obtained from pressure sensor
Pressure P1 is compared calculating with the initial pressure P0 of control module, and the real-time platen pressure P1 of real-time detection is with setting pressure P0's
Difference simultaneously obtains dynamic pressure difference △ P, judges section locating for △ P, △ P<L, △ P>H, △ L<△P<△ H,
When equipment works, for control system driving equipment with pressure roller primary clearance S0, initial feed speed V0 operating, dynamic pressure is poor
Determination module, which puts into operation, obtains dynamic pressure difference △ P, and is accordingly determined,
△ L is obtained in dynamic pressure difference determination module<△P<When △ H, run by current feeding speed, current roller gap, i.e.,
If obtaining to obtain △ L in initial start-up procedures<△P<△ H, then equipment pressing roller primary clearance S0 and certain feeding speed
V0 operation；
Working as △ P>△H,△P<When △ L, and maintain this state for time be more than dynamic pressure difference determination module setting it is lasting when
Between t0 when, control module controls enabled module starting and adjusts roller gap to drive roller gap adjustment servo motor, or
Enabled module starting is controlled to drive feeding speed control servo motor to adjust feeding speed.Roller gap tune is used in equipment
When whole, feeding speed is remained unchanged；When equipment is adjusted using feeding speed, roller gap is remained unchanged；In primary adjustment, adopt
With roller gap adjustment or feeding speed adjustment, then control system of the invention roller gap is optionally set can Tiao He
Or feeding speed is adjustable.
In feeding speed adjustment modes, the control module is pid control module, and pid control module passes through V1=PID
（V0, △ P）Adjustment feeding speed V1 is obtained, PID controller is exactly the error according to system, proportion of utilization, integral, difference gauge
It calculates control amount to be controlled, wherein systematic error is pressure, and control amount is feeding speed, and utilizing works setting method obtains
3 ratio of PID controller, integral, differential parameters can obtain after the completion of PID controller parameter adjusting according to pressure value
To the feeding speed value V1 that should be adjusted, pid control module drives enabled module starting to supply into feeding speed adjustment modes
Material speed control servo motor is to adjust feeding speed V1 operation, and after the completion of primary adjustment, pressure sensor will be after variation
Real-time platen pressure P1 feeds back to control module, realizes closed-loop control, does not still meet △ L after the adjustment<△P<△ H is carried out
Adjustment next time, until adjusting to meeting △ L<△P<△ H, adjustment are completed, the feeding speed operation obtained with current adjustment.Its
In, feeding speed control servo motor itself controls this this field routine techniques, and feeding speed control can be detected by encoder
Servo motor revolving speed simultaneously feeds back to its servo controller, and SERVO CONTROL calculates speed error, adjustment feeding speed control servo electricity
Electromechanics pressure, frequency guarantee that feeding speed is stablized in V1；
In roller gap adjustment modes, feeding speed is remained unchanged, and the control module is linearization block, linearization block
Pass through S1=SCALE（S0, △ P）It obtains and adjusts gap S1, according to pressure difference △ P calibration compensation gap △ inside linearization block
S compensates gap △ S as the adjustment of single step-length, such as goes out for device characteristics wherein compensation gap △ S is demarcated as needed
The compensation gap △ S of factory's default is 0.3mm, as △ P>△ H, when the time for accumulating under this condition is more than t0, control module according to
It compensates △ S and increases clearance distance, calculation formula is S1=S0+n* △ S, and n is the penalty coefficient factor；As △ P<△ L, accumulates this
When time under part is more than t0, control module reduces clearance distance according to compensation △ S, and calculation formula is that S1=S0-n* △ S, n are
The penalty coefficient factor, wherein n is the penalty coefficient factor, for material characteristic, according between the related compressibility of material, molecule
Interaction force, after required compression the parameters such as heap density difference, carrying out test according to material produced can get
Corresponding penalty coefficient factor of n；After linearization block obtains adjustment gap S1, controls enabled module starting roller gap adjustment and watch
Motor is taken to adjust roller gap S1 operation, after the completion of primary adjustment, pressure sensor is by the real-time platen pressure after variation
P1 feeds back to control module, realizes closed-loop control, does not still meet △ L after the adjustment<△P<△ H carries out next adjustment, until
It adjusts to meeting △ L<△P<△ H, adjustment are completed.Wherein, the self stability of roller gap adjustment servo motor is controlled,
The rotation angle of absolute encoder detection roller gap adjustment servo motor can be used and feed back to its servo controller, servo control
Device processed calculates angular error, and adjustment roller gap adjusts servo motor voltage, frequency, guarantees that roller gap is stablized in S1.
Preferably, the pressure sensor is full-bridge foil gauge, pass through amplifier and dynamic pressure difference determination module
Connection.It is simple with structure, detect reliable advantage.
It further include disorderly closedown protective module to protect equipment, disorderly closedown protective module determines real-time platen pressure P1
Locating section, as P 1>H or P1<When L, disorderly closedown protective module controls equipment downtime maintenance.
Claims (7)
1. a kind of dry granulating machine tableting pressure control system, including pressure sensor, for the reality between real-time measurement pressure roller
When platen pressure P1,
Roller gap adjusts servo motor or feeding speed controls servo motor,
Enabled module, driving roller gap adjustment servo motor is to adjust roller gap or driving feeding speed control servo electricity
Machine to adjust feeding speed,
Control module sets pressure roller primary clearance S0, sets initial pressure P0, initial feed speed V0, the pressure increment of permission
The upper limit is △ H, and it is △ L that pressure, which is reduced lower limit, and the Pressure maximum value of permission is H, low pressure limit value L, control module and enabled
Module connection,
Dynamic pressure difference determination module, connect with control module, pressure sensor, the real-time platen pressure P1 of real-time detection and setting
The difference of pressure P0 simultaneously obtains dynamic pressure difference △ P, judges section locating for △ P, △ P<L, △ P>H, △ L<△P<△ H,
And △ L is obtained in dynamic pressure difference determination module<△P<When △ H, run by current feeding speed, current roller gap,
Working as △ P>△H,△P<When △ L, and maintain this state for time be more than dynamic pressure difference determination module setting it is lasting when
Between t0 when, control module controls enabled module starting and adjusts roller gap to drive roller gap adjustment servo motor, or
Enabled module starting is controlled to drive feeding speed control servo motor to adjust feeding speed.
2. dry granulating machine tableting pressure control system according to claim 1, it is characterised in that：The control module is
Pid control module, pid control module pass through V1=PID（V0, △ P）Adjustment feeding speed V1 is obtained, control module driving is enabled
Module starting feeding speed control servo motor is to adjust feeding speed V1 operation, and pressure sensor is by the real-time pressure roller after variation
Pressure P1 feeds back to control module, until adjusting to meeting △ L<△P<△ H, adjustment are completed.
3. dry granulating machine tableting pressure control system according to claim 1, it is characterised in that：The control module is line
Property module, linearization block pass through S1=SCALE（S0, △ P）It obtains and adjusts gap S1, according to pressure inside linearization block
Poor △ P calibration compensation gap △ S, as △ P>△ H, when the time for accumulating under this condition is more than t0, control module is according to compensation △ S
Increase clearance distance, calculation formula is S1=S0+n* △ S, and n is the penalty coefficient factor；As △ P<△ L, accumulate under this condition when
Between more than t0 when, control module according to compensation △ S reduce clearance distance, calculation formula be S1=S0-n* △ S, n be penalty coefficient
The factor controls enabled module starting roller gap adjustment servo motor to adjust roller gap S1 operation, and pressure sensor will become
Real-time platen pressure P1 after change feeds back to control module, until adjusting to meeting △ L<△P<△ H, adjustment are completed.
4. dry granulating machine tableting pressure control system according to claim 1, it is characterised in that：The pressure sensor is
Full-bridge foil gauge is connect by amplifier with dynamic pressure difference determination module.
5. dry granulating machine tableting pressure control system according to claim 1, it is characterised in that：It further include that disorderly closedown is protected
Module is protected, disorderly closedown protective module determines section locating for real-time platen pressure P1, as P 1>H or P1<When L, disorderly closedown is protected
Protect module control equipment downtime maintenance.
6. a kind of dry granulating machine tableting pressure control method, including：Pressure roller initial pressure P0 is set, in the pressure increment of permission
It is limited to △ H, it is △ L that pressure, which is reduced lower limit, and the Pressure maximum value of permission is H, low pressure limit value L, step 1, with the first of setting
Beginning feeding speed V0, pressure roller primary clearance S0 starting device；
Step 2 obtains the real-time platen pressure P1 of pressure roller, more real-time platen pressure P1 and initial pressure P0 and obtains dynamic pressure
Power difference △ P judges section locating for dynamic pressure difference △ P, △ P<L, △ P>H, △ L<△P<△ H,
As △ L<△P<When △ H, run by current feeding speed, current roller gap；
As △ P>△H,△P<When △ L, and duration be more than setting duration t0 when, carry out pressure adjustment；
Step 3, pressure adjustment：Pass through V1=PID（V0, △ P）Adjustment feeding speed V1 is obtained, and to adjust feeding speed V1 fortune
Row；Or pass through S1=SCALE（S0, △ P）It obtains and adjusts gap S1, according to pressure difference △ P calibration compensation inside linearization block
Gap △ S, as △ P>△ H, when the time for accumulating under this condition is more than t0, control module increases clearance distance according to compensation △ S,
Calculation formula is S1=S0+n* △ S, and n is the penalty coefficient factor；As △ P<△ L, when the time for accumulating under this condition is more than t0, control
Molding root tuber reduces clearance distance according to compensation △ S, and calculation formula is S1=S0-n* △ S, and n is the penalty coefficient factor, and with adjustment
Roller gap S1 operation；
Step 4 repeats Step 2: step 3 operation is until △ L<△P<△H；Complete pressure adjustment.
7. dry granulating machine tableting pressure control method according to claim 6, it is characterised in that：The step two is also wrapped
It has included real-time platen pressure P1 to determine, as P 1>H or P1<When L, control equipment downtime maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810509425.3A CN108839377A (en) | 2018-05-24 | 2018-05-24 | Dry granulating machine tableting pressure control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509425.3A CN108839377A (en) | 2018-05-24 | 2018-05-24 | Dry granulating machine tableting pressure control system and method |
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| CN201810509425.3A Pending CN108839377A (en) | 2018-05-24 | 2018-05-24 | Dry granulating machine tableting pressure control system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181850A (en) * | 2019-06-05 | 2019-08-30 | 合肥旺和电子科技有限公司 | High speed sheeting system and its control method for pharmaceutical equipment |
| CN110314614A (en) * | 2019-06-10 | 2019-10-11 | 南京理工大学 | A kind of control method and system of ring die pelleter mold roller gap adjusting structure |
| CN113021981A (en) * | 2021-02-26 | 2021-06-25 | 浙江野马电池股份有限公司 | Novel positive electrode powder strength control device |
| CN114659554A (en) * | 2022-03-01 | 2022-06-24 | 安徽农业大学 | Fault diagnosis method for biomass granulator |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54126674A (en) * | 1978-03-22 | 1979-10-02 | Kubota Ltd | Automatic controller for granulator |
| JPS5594633A (en) * | 1979-01-11 | 1980-07-18 | Shintou Baauindo Kk | Briquetting machine |
| JPH01107999A (en) * | 1987-10-21 | 1989-04-25 | Kawasaki Heavy Ind Ltd | Powder molding machine |
| JPH09192896A (en) * | 1996-01-19 | 1997-07-29 | Sintokogio Ltd | Briquette machine |
| JPH11114699A (en) * | 1997-10-09 | 1999-04-27 | Kurimoto Ltd | Powder compressor |
| CN1385613A (en) * | 2001-05-10 | 2002-12-18 | 三垦电气株式会社 | Constant pressure water supply control system |
| CN1814372A (en) * | 2005-02-01 | 2006-08-09 | 发那科株式会社 | Die cushion control device |
| CN101199959A (en) * | 2006-12-14 | 2008-06-18 | 上海宝钢设备检修有限公司 | Method of automatic pressure adjust between coater coating roll and sequential fluid roll |
| CN101634304A (en) * | 2008-07-25 | 2010-01-27 | 台达电子工业股份有限公司 | Constant-pressure fluid control method |
| CN101694580A (en) * | 2009-09-29 | 2010-04-14 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Monitoring method and system for production line equipment |
| CN104228109A (en) * | 2014-09-02 | 2014-12-24 | 江苏大学 | Mold roller gap stepless automatic regulation device of vertical annular mold straw briquetting machine |
| CN204955512U (en) * | 2015-09-16 | 2016-01-13 | 福建群峰机械有限公司 | Be applied to high -efficient hydraulic means of rubbish compression |
| CN206035948U (en) * | 2016-08-26 | 2017-03-22 | 无锡市康佰液压气动机械有限公司 | Servo liquid of toilet paper machine accuse system |
| CN106553374A (en) * | 2016-11-15 | 2017-04-05 | 长沙新气象自动化技术有限公司 | A kind of pressure adaptive ball press |
-
2018
- 2018-05-24 CN CN201810509425.3A patent/CN108839377A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54126674A (en) * | 1978-03-22 | 1979-10-02 | Kubota Ltd | Automatic controller for granulator |
| JPS5594633A (en) * | 1979-01-11 | 1980-07-18 | Shintou Baauindo Kk | Briquetting machine |
| JPH01107999A (en) * | 1987-10-21 | 1989-04-25 | Kawasaki Heavy Ind Ltd | Powder molding machine |
| JPH09192896A (en) * | 1996-01-19 | 1997-07-29 | Sintokogio Ltd | Briquette machine |
| JPH11114699A (en) * | 1997-10-09 | 1999-04-27 | Kurimoto Ltd | Powder compressor |
| CN1385613A (en) * | 2001-05-10 | 2002-12-18 | 三垦电气株式会社 | Constant pressure water supply control system |
| CN1814372A (en) * | 2005-02-01 | 2006-08-09 | 发那科株式会社 | Die cushion control device |
| CN101199959A (en) * | 2006-12-14 | 2008-06-18 | 上海宝钢设备检修有限公司 | Method of automatic pressure adjust between coater coating roll and sequential fluid roll |
| CN101634304A (en) * | 2008-07-25 | 2010-01-27 | 台达电子工业股份有限公司 | Constant-pressure fluid control method |
| CN101694580A (en) * | 2009-09-29 | 2010-04-14 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Monitoring method and system for production line equipment |
| CN104228109A (en) * | 2014-09-02 | 2014-12-24 | 江苏大学 | Mold roller gap stepless automatic regulation device of vertical annular mold straw briquetting machine |
| CN204955512U (en) * | 2015-09-16 | 2016-01-13 | 福建群峰机械有限公司 | Be applied to high -efficient hydraulic means of rubbish compression |
| CN206035948U (en) * | 2016-08-26 | 2017-03-22 | 无锡市康佰液压气动机械有限公司 | Servo liquid of toilet paper machine accuse system |
| CN106553374A (en) * | 2016-11-15 | 2017-04-05 | 长沙新气象自动化技术有限公司 | A kind of pressure adaptive ball press |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181850A (en) * | 2019-06-05 | 2019-08-30 | 合肥旺和电子科技有限公司 | High speed sheeting system and its control method for pharmaceutical equipment |
| CN110314614A (en) * | 2019-06-10 | 2019-10-11 | 南京理工大学 | A kind of control method and system of ring die pelleter mold roller gap adjusting structure |
| CN113021981A (en) * | 2021-02-26 | 2021-06-25 | 浙江野马电池股份有限公司 | Novel positive electrode powder strength control device |
| CN114659554A (en) * | 2022-03-01 | 2022-06-24 | 安徽农业大学 | Fault diagnosis method for biomass granulator |
| CN114659554B (en) * | 2022-03-01 | 2023-04-25 | 安徽农业大学 | Fault diagnosis method for biomass granulator |
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