CN101251408A - Device and method for micro-control of batches weighing device precision - Google Patents

Device and method for micro-control of batches weighing device precision Download PDF

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Publication number
CN101251408A
CN101251408A CN 200710018793 CN200710018793A CN101251408A CN 101251408 A CN101251408 A CN 101251408A CN 200710018793 CN200710018793 CN 200710018793 CN 200710018793 A CN200710018793 A CN 200710018793A CN 101251408 A CN101251408 A CN 101251408A
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CN
China
Prior art keywords
weighing
bucket
control
hopper
batch
Prior art date
Application number
CN 200710018793
Other languages
Chinese (zh)
Inventor
薛新建
侯延升
Original Assignee
彩虹集团电子股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 彩虹集团电子股份有限公司 filed Critical 彩虹集团电子股份有限公司
Priority to CN 200710018793 priority Critical patent/CN101251408A/en
Publication of CN101251408A publication Critical patent/CN101251408A/en

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Abstract

The invention relates to a micro-control device and a control method for the accuracy of an batch weighing device. Because the batches of substrate glass are characterized in a plurality of varieties, big difference between the proportions of the batches, high requirement on the error accuracy and high speed requirement on the batching efficiency, the invention consists of a series of mechanisms such as a fluidization cushion, a screw conveyor, a leakage proof stop valve, etc. on the base of meeting the requirements of the batch production process flow. An electrical system is adopted for the weighing control, and the control unit and a master station signal controller adopt the scheme of time sharing and synchronous scanning treatment, thereby meeting the fast-response requirement of the batch weighing device, the stability of the systematic adjustment and the accuracy of the batch weighing.

Description

Batch weighing equipment precision micro control device and control method thereof
Technical field
The invention belongs to the control device and the control method thereof that relate to a kind of weighing setting, be specifically related to a kind of batch weighing equipment precision micro control device and control method thereof.
Background technology
In the liquid crystal substrate glass production technology, the proportioning and the weighing accuracy of material composition had very high requirement.Because the starting material weighing causes accurately that inadequately the problem in the production takes place repeatedly.Therefore, the very high electronic scale weighing of precision is all selected to the starting material weighing by each liquid crystal substrate glass producer.But, after the precision of electronic scale improves, new requirement has been proposed for the sensitivity of conveying machinery parts.Precision exists at present Above electronic scale is the main electronic scale that is applied in the crystal liquid substrate glass material weighing.But owing to carry the mechanical response speed of powder slow, the not well high effect of performance electronic scale precision.
Summary of the invention
The object of the present invention is to provide a kind of quick response requirement that can satisfy Weighing apparatus for apportioning material, the stability that system regulates, batch weighing equipment precision micro control device and control method thereof that the weighing precision of batch requires.
For achieving the above object, the inventive system comprises: comprise that the upper end offers the hopper of dog-house, be provided with the feed bin sluice gate in the lower end of hopper, be characterized in, the lower end of this feed bin sluice gate is provided with the worm conveyor that is connected with hopper, and be provided with a leakproof stop valve at the spiral outlet place of this worm conveyor, be provided with the title bucket that has weighing sensor in the lower end of leakproof stop valve, claim the lower end of bucket to be provided with the discharge sluice gate, said worm conveyor, leakproof stop valve and discharge sluice gate are connected with signaling control unit respectively, and weighing sensor is connected with the Weighting and Controlling unit.
Also be provided with the discharge pneumatic hammer on the hopper of the present invention; Also be provided with the fiuidization pad that has micropore on the inwall of hopper; Claim also to be provided with on the bucket and claim the discharge pneumatic hammer that struggles against; The discharging opening place of hopper also is respectively arranged with worm conveyor sensor and the leakproof stop valve position transducer that is used to detect worm conveyor and leakproof stop valve.
Control method of the present invention is: 1) at first, system is carried out initialization, claimed the weight data that struggles against with sky and claimed the reinforced value of bucket to flow to central processing unit by the weighing procedure control unit by weighing sensor then; 2) secondly, send the control signal start-up system by the system signal control module, reinforced in hopper by dog-house, after the material in the hopper is filled it up with, central processing unit is by system signal control module control worm conveyor high-speed cruising, and the stop valve of leakproof is simultaneously opened, fiuidization pad work and discharge pneumatic hammer discontinuous operation be to claiming bucket reinforced; 3) claim the weight of the material that the weighing sensor of bucket will be weighed in will claiming to struggle against to feed back to the weighing procedure control unit, the weighing procedure control unit feeds back to the system signal control module with this numerical value when the gravimetric value of weighing reaches the 80-95% of reinforced value, by the slow running of system signal control module control worm conveyor, fiuidization pad and discharge pneumatic hammer stop simultaneously; 4) at last when the weight of material data of weighing sensor collection reach reinforced value worm conveyor quit work, the leakproof stop valve is closed, claim the discharge sluice gate of bucket to open simultaneously to the intermediate bin discharge, claim the action of bucket discharge pneumatic hammer, the material that claims in the bucket is cleared, and following batch of working signal such as single batch of loop ends of weighing arrives.
Because the present invention adopts spiral conveyer to add pneumatic leakproof stop valve, when need being transported to from hopper, raw material claim bucket to carry out the process of total weight simultaneously, spiral conveyer itself possesses to be carried evenly, adjustable-speed, the helical feed body is full of powder material during parking, have the advantage that rapid self-locking is stopped, overcome because weighing-up wave when arriving, motor since inertia fail response in time and cause the defective of weighing error.
Description of drawings
Fig. 1 is a batch weighing equipment precision micro control device structural representation of the present invention;
Fig. 2 is the process flow diagram of control method of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the present invention includes the upper end and offer the hopper 2 that dog-house 1 lower end is provided with feed bin sluice gate 4, the inwall of hopper 2 is provided with the fiuidization pad 7 that has micropore, also be provided with discharge pneumatic hammer 3 on the hopper 2, the lower end of feed bin sluice gate 4 is provided with the worm conveyor 5 that is connected with hopper 2, and be provided with a leakproof stop valve 6 at the spiral outlet place of this worm conveyor 5, the discharging opening place of hopper 2 also is respectively arranged with worm conveyor sensor 13 and the leakproof stop valve position transducer 14 that is used to detect worm conveyor 5 and leakproof stop valve 6, be provided with the title bucket 11 that has weighing sensor 8 in the lower end of leakproof stop valve 6, claim also to be provided with on the bucket 11 and claim the discharge pneumatic hammer 9 that struggles against, claim the lower end of bucket 11 to be provided with discharge sluice gate 10, said worm conveyor 5, leakproof stop valve 6 and discharge sluice gate 10 are connected with signaling control unit respectively, and weighing sensor 8 is connected with the Weighting and Controlling unit.
The weighing technological process of the composition batch of liquid crystal substrate glass is: the feed bin storing that feeds intake---discharge is evenly carried---claiming bucket weighing---discharge after the weighing.Enter in turn by separately storage bin respectively for the raw material of multiple microcomponent and to claim to struggle against total weight successively.Reach finish predetermined weighing require with kind after, batch discharge.
After starting material enter hopper 2, add continuously in the title bucket 11 by hopper 2, the hopper 2 inner fiuidization pad that have micropore 7 of installing, because the batching of glass is powder stock, the part powder stock has easy deliquescence and forms the feature that hardens, adopt fiuidization pad 7 to be blown into high clean dry air to feed bin 2 and can avoid the phenomenon that hardens, make powder not take place to pile up and the material arch.Owing to reduced the frictional resistance of material powder and hopper 2 inwalls, powder can at the uniform velocity flow into and claim bucket 11, and better fit electronic scales signal Processing and response make the weighing precision of electronic scales reach optimal level.
Hopper 2 is after receiving the discharge signal of system control signal unit, and discharge pneumatic hammer 3 is worked, worm conveyor 5 operations, and leakproof stop valve 6 is opened.A whole set of mechanical actuating mechanism action is finished hopper 2 raw materials to the course of conveying that claims bucket 11.
Because the raw material of base plate glass is powder material, the present invention adopts spiral conveyer 5 to add pneumatic leakproof stop valve 6, when need being transported to from hopper 2, raw material claim bucket 11 to carry out the process of total weight simultaneously, spiral conveyer 5 possesses itself to be carried evenly, adjustable-speed, the helical feed body is full of powder material during parking, has the advantage that rapid self-locking is stopped, overcome because weighing-up wave when arriving, motor since inertia fail response in time and cause the defective of weighing error.
Worm conveyor 5 of the present invention adopts frequency control to drive and regulates, and worm conveyor 5 approaches scope according to the desired value of total weight, and conveying equipment is divided into fast and at a slow speed to be carried.
Leakproof stop valve 6 of the present invention is finished from hopper 2 transferring raw materials to the process that claims bucket 11 by the two control butterfly valves of one group of air-powered electromagnetic, when mass transport reaches the weighing value, its butterfly valve cooperates carries stopping of motor, closes rapidly to prevent that material from bleeding the title bucket and causing weighing error.The power gas source pressure of solenoid valve is 0.4MPa~0.6MPa.
It is exactly that inertia rate of curve when the material input is stopped increases that the present invention adopts the leakproof butterfly valve, and the shut-in time is the ms level.Adopted the fast driving device during practical application.
The procedure control unit of weighing of the present invention adopts timesharing synchronous scanning processing scheme with the main website signal controller, and promptly the system signal control module carries out program scanning to spiral conveyer 5, leakproof stop valve 6, discharge pneumatic hammer 3, the discharge pneumatic hammer 9 that claims to struggle against, discharge sluice gate 10 switching value signals; And the procedure control unit of weighing does not rely on the CPU in master station scan round cycle, independently the signal that obtains by weighing sensor 8 is finished data acquisition, provide signal when the data of gathering reach predetermined value this signal is passed to the system signal control module by bus, the system signal control module is according to the action of this signal controlling material conveying mechanism that obtains.Thereby shorten the signal Processing response cycle, close the batching stop valve like clockwork, reach the proportioning accuracy purpose.
The present invention requires the system signal control module and the scan period of the procedure control unit of weighing must keep synchronously with harmonious.Be that 60~150ms regulates the setting state sweep time according to the signal volume at scene and mechanical actuating mechanism.
Control procedure of the present invention is as follows:
1) at first, system is carried out initialization, then by weighing sensor 8 with sky claim to struggle against 11 weight data and claim bucket 11 reinforced values to flow to central processing unit by the weighing procedure control unit;
2) secondly, send the control signal start-up system by the system signal control module, reinforced in hopper 2 by dog-house 1, after the material in the hopper 2 is filled it up with, central processing unit is by system signal control module control worm conveyor 5 high-speed cruisings, and the stop valve of leakproof simultaneously 6 is opened, fiuidization pad 7 is worked and discharge pneumatic hammer 3 discontinuous operations are reinforced to title bucket 11;
3) weight of the material that claims the weighing sensor 8 of bucket 11 will claim to struggle against to be weighed in 11 feeds back to the weighing procedure control unit, the weighing procedure control unit feeds back to the system signal control module with this numerical value when the gravimetric value of weighing reaches the 80-95% of reinforced value, by 5 slow runnings of system signal control module control worm conveyor, fiuidization pad 7 and discharge pneumatic hammer 3 stop simultaneously;
Worm conveyor 5 quit work when 4) the weight of material data of gathering when weighing sensor 8 at last reached reinforced value, leakproof stop valve 6 is closed, claim the discharge sluice gate 10 of bucket 11 to open simultaneously to intermediate bin 12 discharges, claim bucket discharge pneumatic hammer 9 actions, the material that claims in the bucket 11 is cleared, and following batch of working signal such as single batch of loop ends of weighing arrives.

Claims (6)

1, a kind of batch weighing equipment precision micro control device, comprise that the upper end offers the hopper (2) of dog-house (1), be provided with feed bin sluice gate (4) in the lower end of hopper (2), it is characterized in that: the lower end of this feed bin sluice gate (4) is provided with the worm conveyor (5) that is connected with hopper (2), and be provided with a leakproof stop valve (6) at the spiral outlet place of this worm conveyor (5), be provided with the title bucket (11) that has weighing sensor (8) in the lower end of leakproof stop valve (6), claim the lower end of bucket (11) to be provided with discharge sluice gate (10), said worm conveyor (5), leakproof stop valve (6) and discharge sluice gate (10) are connected with signaling control unit respectively, and weighing sensor (8) is connected with the Weighting and Controlling unit.
2, batch weighing equipment precision micro control device according to claim 1 is characterized in that: also be provided with discharge pneumatic hammer (3) on the said hopper (2).
3, batch weighing equipment precision micro control device according to claim 1 is characterized in that: also be provided with the fiuidization pad (7) that has micropore on the inwall of said hopper (2).
4, batch weighing equipment precision micro control device according to claim 1 is characterized in that: also be provided with title bucket discharge pneumatic hammer (9) on the said title bucket (11).
5, batch weighing equipment precision micro control device according to claim 1 is characterized in that: the discharging opening place of said hopper (2) also is respectively arranged with worm conveyor sensor (13) and the leakproof stop valve position transducer (14) that is used to detect worm conveyor (5) and leakproof stop valve (6).
6, a kind of batch weighing equipment precision micro-control method based on the described batch weighing equipment of claim 1 precision micro control device is characterized in that:
1) at first, system is carried out initialization, claim the weight data of bucket (11) with sky and claim the reinforced value of bucket (11) to flow to central processing unit by weighing sensor (8) then by the weighing procedure control unit;
2) secondly, send the control signal start-up system by the system signal control module, reinforced in hopper (2) by dog-house (1), after the material in the hopper (2) is filled it up with, central processing unit is by system signal control module control worm conveyor (5) high-speed cruising, and leakproof stop valve (6) is opened simultaneously, fiuidization pad (7) is worked and discharge pneumatic hammer (3) discontinuous operation is reinforced to title bucket (11);
3) weight of the material that claims the weighing sensor (8) of bucket (11) will claim to struggle against to be weighed in (11) feeds back to the weighing procedure control unit, the weighing procedure control unit feeds back to the system signal control module with this numerical value when the gravimetric value of weighing reaches the 80-95% of reinforced value, by the slow running of system signal control module control worm conveyor (5), fiuidization pad (7) and discharge pneumatic hammer (3) stop simultaneously;
Worm conveyor (5) quit work when 4) the weight of material data of gathering when weighing sensor (8) at last reached reinforced value, leakproof stop valve (6) is closed, claim the discharge sluice gate (10) of bucket (11) to open simultaneously to intermediate bin (12) discharge, claim bucket discharge pneumatic hammer (9) action, the material that claims in the bucket (11) is cleared, and following batch of working signal such as single batch of loop ends of weighing arrives.
CN 200710018793 2007-09-30 2007-09-30 Device and method for micro-control of batches weighing device precision CN101251408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710018793 CN101251408A (en) 2007-09-30 2007-09-30 Device and method for micro-control of batches weighing device precision

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Application Number Priority Date Filing Date Title
CN 200710018793 CN101251408A (en) 2007-09-30 2007-09-30 Device and method for micro-control of batches weighing device precision

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183287A (en) * 2011-03-29 2011-09-14 河南丰博自动化有限公司 Weightlessness-principle-based powdery material continuous metering control method and device thereof
CN102494746A (en) * 2011-12-02 2012-06-13 中联重科股份有限公司 System and method for material weighing and weighing controller
CN102538931A (en) * 2012-03-07 2012-07-04 王汉力 Raw material weighing and metering device of polyurethane mixer
CN102785951A (en) * 2012-08-24 2012-11-21 江苏建华管桩有限公司 Automatic feeding system for storage hopper
CN104061988A (en) * 2014-06-23 2014-09-24 青岛市中心血站 Intelligent blood centrifugation balancing instrument and balancing method
CN104280102A (en) * 2013-07-02 2015-01-14 江明锦 Aluminum powder/aluminum powder paste dual-purpose automatic metering system
CN104440632A (en) * 2014-12-04 2015-03-25 泰兴市和庆机械配件厂 Feed system of grinding wheel machine
CN103630219B (en) * 2013-12-10 2015-10-28 中国恩菲工程技术有限公司 Auto feed control method, device and the system of measuring is claimed based on track
CN106182433A (en) * 2016-08-30 2016-12-07 苏州工机械有限公司 Additive-adding device, mixing system and operational method thereof
CN107029628A (en) * 2017-03-31 2017-08-11 郑州旭飞光电科技有限公司 Material Ratio System, equipment, method and compound dosing apparatus
CN108660893A (en) * 2018-05-21 2018-10-16 南通路桥工程有限公司 A kind of bituminous mixing plant dispensing adding set and its application method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183287A (en) * 2011-03-29 2011-09-14 河南丰博自动化有限公司 Weightlessness-principle-based powdery material continuous metering control method and device thereof
CN102183287B (en) * 2011-03-29 2013-03-27 河南丰博自动化有限公司 Weightlessness-principle-based powdery material continuous metering control method and device thereof
CN102494746A (en) * 2011-12-02 2012-06-13 中联重科股份有限公司 System and method for material weighing and weighing controller
CN102538931A (en) * 2012-03-07 2012-07-04 王汉力 Raw material weighing and metering device of polyurethane mixer
CN102785951A (en) * 2012-08-24 2012-11-21 江苏建华管桩有限公司 Automatic feeding system for storage hopper
CN102785951B (en) * 2012-08-24 2015-06-17 江苏建华管桩有限公司 Automatic feeding system for storage hopper
CN104280102A (en) * 2013-07-02 2015-01-14 江明锦 Aluminum powder/aluminum powder paste dual-purpose automatic metering system
CN103630219B (en) * 2013-12-10 2015-10-28 中国恩菲工程技术有限公司 Auto feed control method, device and the system of measuring is claimed based on track
CN104061988A (en) * 2014-06-23 2014-09-24 青岛市中心血站 Intelligent blood centrifugation balancing instrument and balancing method
CN104440632A (en) * 2014-12-04 2015-03-25 泰兴市和庆机械配件厂 Feed system of grinding wheel machine
CN104440632B (en) * 2014-12-04 2017-02-08 刘晓冰 Feed system of grinding wheel machine
CN106182433A (en) * 2016-08-30 2016-12-07 苏州工机械有限公司 Additive-adding device, mixing system and operational method thereof
CN107029628A (en) * 2017-03-31 2017-08-11 郑州旭飞光电科技有限公司 Material Ratio System, equipment, method and compound dosing apparatus
CN108660893A (en) * 2018-05-21 2018-10-16 南通路桥工程有限公司 A kind of bituminous mixing plant dispensing adding set and its application method

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Owner name: SHANXI CAIHONG ELECTRONIC GLASS CO., LTD.

Free format text: FORMER OWNER: IRICO GROUP ELECTRONICS CO., LTD.

Effective date: 20091002

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Address after: Postal code of new industry accumulation area, Xianyang District, Shaanxi Province, China: 712021

Applicant after: Shaanxi Caihong Electronic Glass Co., Ltd.

Address before: 1, Rainbow Road, Shaanxi, Xianyang Province, China: 712021

Applicant before: IRICO Group Electronics Co., Ltd.

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Open date: 20080827