CN106428818A - Control method of weighing re-inspection scale - Google Patents
Control method of weighing re-inspection scale Download PDFInfo
- Publication number
- CN106428818A CN106428818A CN201610836446.7A CN201610836446A CN106428818A CN 106428818 A CN106428818 A CN 106428818A CN 201610836446 A CN201610836446 A CN 201610836446A CN 106428818 A CN106428818 A CN 106428818A
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- CN
- China
- Prior art keywords
- scale
- belt feeder
- control system
- weighing
- value
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention relates to a control method of a weighing re-inspection scale. The control method is characterized by specifically including the following steps that (1) power is supplied to initialize a program, and a PLC control system is in communication connection with a weighing instrument, reads a target value, a tolerance value and a net weight value of the weighing instrument and obtains the overproof range; (2) the weighing instrument displays the real-time weight on the re-inspection scale, and when the displayed value is 0kg, a re-inspection belt conveyor operates; (3) when an optoelectronic switch on the re-inspection belt conveyor detects packaged objects, the re-inspection belt conveyor is stopped; (4) after time is delayed by T1, the actual weight of objects on the re-inspection scale is read; (5) the read actual weight and the overproof range are compared, and if the actual value is within the overproof range, the weight is qualified, and the re-inspection belt conveyor is started again after time is delayed by T2; and (6) if the actual weight is beyond the overproof range, an overproof alarm is output. According to the control method, the defect of low precision of a dynamic weighing re-inspection scale is overcome, and for a static re-inspection scale, production efficiency is improved.
Description
Technical field
The present invention relates to a kind of weighing rechecks the control method of scale, belong to the control method technology of packaging facilities auxiliary equipment
Field.
Background technology
Whether the material that packaging facilities are packed out, before entering warehouse, be required for checking the weight packed and exist
Within accuracy rating.In existing technology, a kind of method is using the dynamic control rechecked scale, belt dynamic is rechecked to scale
When method processed is weighed in course of conveying, measuring accuracy is not high, can not normally use in the high occasion of some required precisions；And
Another kind of traditional static control method rechecking scale, no matter whether weight is qualified, is required for manually stopping, being weighed, no
Only waste time and energy, and have a strong impact on production efficiency.
Content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of weighing to recheck the control method of scale,
The shortcoming that can solve the problem that the existing control method weighed and recheck scale, compensate for dynamic weighing and rechecks the not high deficiency of scale precision, right
For static reinspection scale, improve production efficiency.
The technical scheme providing according to the present invention, described weighing rechecks the control method of scale, it is characterized in that：Realize this control
The device of method includes：PLC control system, weighing instrument and LOAD CELLS, LOAD CELLS is arranged on rechecks belt feeder
Lower section, holds up whole belt feeder of rechecking as a weighing platform；Specifically include following steps：
（1）It is first powered up initialization program, PLC control system is connected with weighing instrument communication, the desired value of weighing instrument, fair
Difference, net weight value read in the internal storage of PLC control system, and obtain upper limit value M and the lower limit N of overproof scope；
（2）Real-time weight on scale is rechecked in weighing instrument display, when show value is 0kg, rechecks belt feeder and runs；
（3）After rechecking belt feeder startup, the photoswitch rechecked on belt feeder is detected, packaged article are defeated when detecting
When delivering on reinspection belt feeder, recheck belt feeder and stop；
（4）Delay time T1, after waiting article totally stationary, PLC control system is connected with weighing instrument communication, reads and rechecks scale
The actual weight of upper article；
（5）The actual weight of reading is compared with the upper limit value M of overproof scope and lower limit N, if actual value is in lower limit N
In the range of upper limit value M, then qualified for actual weight, after delay time T2, it is again started up rechecking belt feeder, actual weight is closed
The packaging bag of lattice is transported to next link；
（6）If actual weight is more than upper limit value M or is less than lower limit N, PLC control system exports overproof warning.
Further, described PLC control system is arranged in reinspection scale switch board, and weighing instrument is arranged on reinspection scale and controls
In the cabinet door of cabinet.
Further, described PLC control system is connected with weighing instrument communication by serial ports MODBUS 485.
Further, after PLC control system output overproof warning, according to actual weight, add or remove article and reach
To after qualified, recheck belt feeder and be again started up, qualified article after handling well are transported to next link.
The present invention has the advantages that compared to prior art：
Of the present invention weighing rechecks the control method of scale, combines PLC control system and weighing instrument constitutes a kind of moving
The static reinspection system of state conveying；Dynamic weighing is rechecked for scale, compensate for the not high deficiency of precision；For traditional static state
For rechecking scale, improve labor condition, improve production efficiency.
Brief description
Fig. 1 is the FB(flow block) of the control method weighed and recheck scale of the present invention.
Specific embodiment
With reference to concrete accompanying drawing, the invention will be further described.
Of the present invention weighing rechecks the control method of scale, and the weight controlling packing article is all within acceptability limit,
Realize this weigh recheck scale control method device include：PLC control system, weighing instrument and LOAD CELLS；Weighing and sensing
Device is mounted in the lower section rechecking belt feeder, holds up whole belt feeder of rechecking as a weighing platform, PLC control system is installed
In reinspection scale switch board, weighing instrument is arranged in the cabinet door rechecking scale switch board, facilitates operator to observe the reality of article
Border weight, PLC control system is passed through serial ports MODBUS 485 and is connected with weighing instrument communication, by MODRW read write command, title
The desired value of weight instrument, franchise value, net weight value read in the internal storage of PLC control system, by four fundamental rules logical operationss
Instruction, calculates the higher limit of overproof scope and lower limit, and load cell signal accesses weighing instrument.
As shown in figure 1, of the present invention weighing rechecks the control method of scale, comprise the following steps：
1st, it is first powered up initialization program, PLC control system is passed through serial ports MODBUS 485 and is connected with weighing instrument communication, passes through
MODRW read write command, reads the desired value of weighing instrument, franchise value, net weight value the internal storage of PLC control system
In, by four fundamental rules logic instruction, the higher limit of overproof scope and lower limit are calculated, higher limit is 25.20kg, under
Limit value is 25.00kg；
2nd, real-time weight on scale is rechecked in weighing instrument display, and show value is 0kg, and the startup that operator start switch board is pressed
Button, rechecks belt feeder and runs；
3rd, after rechecking belt feeder startup, packaged article are waited to be transported on reinspection belt feeder, the light rechecked on belt feeder
Electric switch checks, and rechecks belt feeder and stops；
4th, after waiting article totally stationary after time delay 2s, PLC control system passes through serial ports MODBUS 485 and weighing instrument communication
Connect, by MODRW read write command, read the actual weight rechecking article on scale；
5th, the actual weight reading is compared with the higher limit calculating before and lower limit, if actual value is in lower limit
In the range of 25.00 kg and higher limit 25.20 kg, it is qualified to belong to actual weight, after time delay 2s, is again started up rechecking belt feeder,
Packaging bag qualified for actual weight is transported to next link；
If 6 actual weights are more than higher limit 25.20 kg or are less than lower limit 25.00 kg, PLC control system exports overproof report
Alert, wait operator, according to actual weight, add or remove article reach qualified after, operator operate overproof place
Reason button, starts and rechecks belt feeder, and qualified article after handling well are transported to next link.
Of the present invention weighing rechecks the control method of scale, combines PLC control system and weighing instrument constitutes one
Plant dynamic transport static state reinspection system, in dynamic delivery process, have product to be transported on reinspection scale, recheck scale motor and stop,
DVPSS2 series of PLC passes through serial ports MODBUS read write command, and the net weight value of reading B520 weighing instrument, desired value, franchise value are entered
Row compares, if in overproof scope, rechecks motor and restarts, product is transported to next link；If exceeding outside overproof scope,
Recheck scale to report to the police, after confirming etc. artificial treatment, be transported to next link, dynamic weighing is rechecked for scale, compensate for precision
Not high deficiency；For traditional static reinspection scale, improve labor condition, improve production efficiency.
Claims (4)
1. a kind of weighing rechecks the control method of scale, it is characterized in that：The device realizing this control method includes：PLC control system,
Weighing instrument and LOAD CELLS, LOAD CELLS is arranged on the lower section rechecking belt feeder, holds up whole reinspection belt feeder conduct
One weighing platform；Specifically include following steps：
（1）It is first powered up initialization program, PLC control system is connected with weighing instrument communication, the desired value of weighing instrument, fair
Difference, net weight value read in the internal storage of PLC control system, and obtain upper limit value M and the lower limit N of overproof scope；
（2）Real-time weight on scale is rechecked in weighing instrument display, when show value is 0kg, rechecks belt feeder and runs；
（3）After rechecking belt feeder startup, the photoswitch rechecked on belt feeder is detected, packaged article are defeated when detecting
When delivering on reinspection belt feeder, recheck belt feeder and stop；
（4）Delay time T1, after waiting article totally stationary, PLC control system is connected with weighing instrument communication, reads and rechecks scale
The actual weight of upper article；
（5）The actual weight of reading is compared with the upper limit value M of overproof scope and lower limit N, if actual value is in lower limit N
In the range of upper limit value M, then qualified for actual weight, after delay time T2, it is again started up rechecking belt feeder, actual weight is closed
The packaging bag of lattice is transported to next link；
（6）If actual weight is more than upper limit value M or is less than lower limit N, PLC control system exports overproof warning.
2. weigh as claimed in claim 1 and recheck the control method of scale, it is characterized in that：Described PLC control system is arranged on multiple
In inspection scale switch board, weighing instrument is arranged in the cabinet door rechecking scale switch board.
3. weigh as claimed in claim 1 and recheck the control method of scale, it is characterized in that：Described PLC control system passes through serial ports
MODBUS 485 is connected with weighing instrument communication.
4. weigh as claimed in claim 1 and recheck the control method of scale, it is characterized in that：When PLC control system exports overproof report
After police, according to actual weight, add or remove article reach qualified after, recheck belt feeder be again started up, after handling well
Qualified article are transported to next link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836446.7A CN106428818A (en) | 2016-09-20 | 2016-09-20 | Control method of weighing re-inspection scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836446.7A CN106428818A (en) | 2016-09-20 | 2016-09-20 | Control method of weighing re-inspection scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106428818A true CN106428818A (en) | 2017-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610836446.7A Pending CN106428818A (en) | 2016-09-20 | 2016-09-20 | Control method of weighing re-inspection scale |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528833A (en) * | 2018-04-27 | 2018-09-14 | 丁涛 | Accurately control the drug granule packing machine and method of discharge quantity |
| CN109060085A (en) * | 2018-08-27 | 2018-12-21 | 南京迈欧机械制造有限公司 | A kind of mostly package dynamic weighing method and meausring apparatus |
| CN110789779A (en) * | 2019-11-11 | 2020-02-14 | 无锡大东机械制造有限公司 | Control method, device and system for secondary feeding |
| CN110844137A (en) * | 2019-10-09 | 2020-02-28 | 兖矿新疆煤化工有限公司 | Online rechecking joint control weighing and filling system and method for correcting weighing error thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102226709A (en) * | 2011-04-14 | 2011-10-26 | 上海衡仪器厂有限公司 | Automatic weight detection machine and weight detection method |
| KR20130129566A (en) * | 2012-05-21 | 2013-11-29 | 엘에스산전 주식회사 | Apparatus and method for monitoring for plc system |
| KR20140002254A (en) * | 2012-06-28 | 2014-01-08 | 엘에스산전 주식회사 | Apparatus and method for communication processing of plc |
| CN204324290U (en) * | 2014-10-28 | 2015-05-13 | 无锡大东机械制造有限公司 | A kind of power belt weighting apparatus |
| CN205253587U (en) * | 2015-12-17 | 2016-05-25 | 广西农喜作物科学有限公司 | Bottled product on -line measuring removing devices |
-
2016
- 2016-09-20 CN CN201610836446.7A patent/CN106428818A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226709A (en) * | 2011-04-14 | 2011-10-26 | 上海衡仪器厂有限公司 | Automatic weight detection machine and weight detection method |
| KR20130129566A (en) * | 2012-05-21 | 2013-11-29 | 엘에스산전 주식회사 | Apparatus and method for monitoring for plc system |
| KR20140002254A (en) * | 2012-06-28 | 2014-01-08 | 엘에스산전 주식회사 | Apparatus and method for communication processing of plc |
| CN204324290U (en) * | 2014-10-28 | 2015-05-13 | 无锡大东机械制造有限公司 | A kind of power belt weighting apparatus |
| CN205253587U (en) * | 2015-12-17 | 2016-05-25 | 广西农喜作物科学有限公司 | Bottled product on -line measuring removing devices |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528833A (en) * | 2018-04-27 | 2018-09-14 | 丁涛 | Accurately control the drug granule packing machine and method of discharge quantity |
| CN109060085A (en) * | 2018-08-27 | 2018-12-21 | 南京迈欧机械制造有限公司 | A kind of mostly package dynamic weighing method and meausring apparatus |
| CN110844137A (en) * | 2019-10-09 | 2020-02-28 | 兖矿新疆煤化工有限公司 | Online rechecking joint control weighing and filling system and method for correcting weighing error thereof |
| CN110844137B (en) * | 2019-10-09 | 2022-06-17 | 兖矿集团有限公司 | Online rechecking joint control weighing and filling system and method for correcting weighing error thereof |
| CN110789779A (en) * | 2019-11-11 | 2020-02-14 | 无锡大东机械制造有限公司 | Control method, device and system for secondary feeding |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |