CN86105675A - Be used for particle or the continuous according to the order of sequence feedway of accurately weighing of Powdered goods - Google Patents
Be used for particle or the continuous according to the order of sequence feedway of accurately weighing of Powdered goods Download PDFInfo
- Publication number
- CN86105675A CN86105675A CN 86105675 CN86105675A CN86105675A CN 86105675 A CN86105675 A CN 86105675A CN 86105675 CN86105675 CN 86105675 CN 86105675 A CN86105675 A CN 86105675A CN 86105675 A CN86105675 A CN 86105675A
- Authority
- CN
- China
- Prior art keywords
- divider
- belt
- goods
- speed
- point
- 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.)
- Pending
Links
Images
Abstract
Can realize the continuous according to the order of sequence device of accurately weighing and supplying with to particle or Powdered goods, it comprises that two are used to the endless-belt that extracts and distribute.The endless-belt of divider is weighed as a whole and continuously, and the speed control of extractor device is to the measured value that is distributed in the instantaneous loading of goods on the divider belt.Said apparatus comprises: the funnel that is used to store the goods that will weigh, dispose the endless-belt that is used to extract in its lower section, one of two supporting drums with the above-mentioned belt of variable speed drives, linearly dispose in its lower section divider with the endless-belt of extraction apparatus by motor reducing transmission device.This device can be used for chemical fertilizer industry.
Description
Relate generally to of the present invention a kind of through improved device, it can be to such as potassium chloride, husky, cement, phosphate, shot-like particle and other similarly a large amount of graininess or Powdered goods, realization according to the order of sequence and continuous accurately weighing supplied with or mixing continuously, this supply is normally in for example chemical fertilizer industry, cement and concrete industry, and the incipient stage of the production run of aspect such as food industry.
Known devices is to extract the goods that will weigh by the variable extraction element of operational throughput from a funnel, and the goods of this extraction are sent on the annular belt of falling divider, this belt be hang and weigh as a whole and continuously, this device can corresponding divider preset sequence operational throughput drive above-mentioned divider belt with given speed, and with the speed control of extraction apparatus belt to the measured value that is distributed in the instantaneous loading of goods on the divider belt.
In present known devices, or use and extract the divider that link is separated, or use single or two weighing to take turns and the combination weighing machineries.
According to the research of measurement standard, the applicant has abandoned various single belt dividers, and this divider has many disadvantageous shortcomings, such as:
A. its running roller that will be stain, the speed of belt, tension force, quality, and the restriction of the loading of funnel;
B. it demarcates not only difficulty but also consuming time, because of needs soar funnel fully;
C. the goods time length of weighing is difficult to limit.
Separate type known today is extracted divider and is comprised from placing the endless-belt of the extraction apparatus reception goods under the funnel, the configuration of whole piece belt is to rotate around a stationary shaft, and hang its other end on the converter of weighing, corresponding configuration-counterweight selectively with this converter is to make this divider balance under no-load condition.The endless-belt of this divider is to be suspended on the arm of evener in other device, and other end load-bearing.
Regardless of its working method, these dividers all have some defectives, and as lacking the dirigibility around stationary shaft, its performance will be subjected to the restriction of the quality and the homogeneity of belt.
The device that the present invention relates to can be realized exactly particle or the Powdered goods supplied with being weighed continuously according to the order of sequence; it comprises the endless-belt that extracts and distribute of being used to of two separation; wherein the endless-belt of divider is weighed as a whole and continuously; wherein the speed control of extraction element is characterized in that comprising to the measured value that is distributed in the instantaneous loading of goods on the divider belt:
-be used to store the funnel of the goods that will be weighed, dispose the endless-belt that is used to extract in its lower section, one of some drums give variable speed drives and drive above-mentioned belt by motor reducing transmission device;
-dispenser device and annular are extracted belt linearly and place below it, this device comprises a fixing T shape support, end at this support has three pillars that support three flexible weight indicators of strainmeter type, on described indicator, have flexible suspension hawser, a kind of microlight-type tubular bracket hangs on it, and described microlight-type tubular bracket is supporting the endless-belt of its drum, and one of some drums give variable speed drives by motor reducing transmission device;
-between the motor reducing transmission device of motor reducing transmission device that drives the divider annular belt and extraction apparatus annular belt, an electronic control circuit being arranged, the speed of extraction element can be controlled according to being distributed in the instantaneous loading measured value of goods on the divider belt in this loop.
The application's device has some following principal advantages:
-its extraction element can give optimization according to its goods,
-precision is improved, and particularly when low speed is carried, it carries display precision can be up to+2%,
-fluctuations in discharge scope is big, for an above-mentioned class divider the quota operational throughput can become 100% from 5%.
The tension force and the quality of-used belt are nothing serious,
-cleaning and maintenance are very convenient,
The deviation of-relative Calibration is little.
Further feature of the present invention, advantage and characteristic can give obvious from following description taken in conjunction with the accompanying drawings, and its accompanying drawing is schematically and simplifies that a feasible embodiment of the present invention provides as preferred embodiments.
In above-mentioned accompanying drawing,
Fig. 1 is the configuration front elevation of a kind of continuous measurement of applied flow process according to the present invention,
Fig. 2 and 3 is actual dividers, respectively with facing and vertical view is shown specifically with larger proportion,
Fig. 4 is for utilizing according to flow process of the present invention the control of the feedway of weighing continuously and the basic diagrammatic sketch of working.
At first referring to Fig. 1, the goods 1 that will distribute according to the present invention as can be seen are stored in the funnel 2, dispose endless-belt formula extraction apparatus 3 below funnel.This belt is by driving and rotary drum 5A, and 5B supports, and carries out variable speed drives by direct current lamination winding electric machine speed reduction gearing, and it is 4 speed output shaft that described gearing has label, and it is on the front wheel driving drum 5A of extraction apparatus belt.
Manually or the baffle plate 6 of control automatically be positioned at the end of extraction apparatus, to realize the purpose of control goods 1 coating height, these goods are then extracted from funnel 2 by belt 3.
A string chain 7 just in time is positioned at the superinverse side in goods setting point for belt 3 landscape configuration.Constituted these chains of a kind of horizontal curtain, be used to adjust the purpose of carrying and goods being separated, to reduce directly to fall within the influence on the actual allocated device, the label of this divider is 8, it with extract belt 3 and linearly be disposed at the latter's below.
This divider 8(is also shown in Fig. 2 and 3) constitute by fixing T shape support 9, have three pillar 10A in its each end, 10B, 10C are used for supporting three flexible weight indicators of strainmeter type, this indicator has flexible suspension hawser 12A, 12B, 12C, a kind of microlight-type tubular bracket 13 hangs on it.
The tubular bracket of this suspension is used to support the driving and the rotary drum 14A of the endless-belt that constitutes divider belt 15,14B, and described belt can give variable speed drives by direct current lamination winding electric machine speed reduction gearing, and the latter has the speed output shaft and is label with 16.
For accurately limiting the length of the time of weighing, it is positioned at below the extraction apparatus belt 3 at tubular bracket 13() the rear portion dispose and throw fishplate bar (table) 17, in order to reclaim the goods of throwing back from the extraction apparatus belt 1, and the horizontal curtain 18 of chain-type is placed in the outlet side of divider belt 15, being used for always making the same point that is separated in of goods, and in the direction of arrow F towards admitting belt 20 to dish out goods so that carry out the processing of goods continuously.
In addition, the belt 15 of divider will slip over from a string self-skating type carrying sieving 9 that is inclined upwardly, and this sieving will be rolled up on it along all marginal portions that divider belt 15 is weighed.As can be seen, admit goods 1(from extracting belt 3) divider belt 15 these goods are delivered to its outlet side, and by including Weighing indicator 11A, 11B, the system of 11C realizes constant instantaneous combination weighing at interval with unusual correct time.
The basic characteristics of this flow process according to the present invention, the speed of the extraction apparatus belt 3 that is driven by its motor 4, be to depend on the instantaneous loading measured value that is distributed in goods on the divider belt and controlled, this is to be realized by a control loop that is illustrated with double-head arrow F1-F2 among Fig. 1, if its control procedure is not corresponding with the independent set-point of divider 8 for the instantaneous loading measured value that is distributed in goods on the extraction apparatus belt 15, then the speed of this extraction apparatus belt 3 is promptly revised automatically up or down, thereby the program that can ignore divider is carried, and keeps the constant load of goods.
Now specifically with reference to Fig. 4, as an example how brief description is constituted control loop (F1-F2), to control the speed of extraction apparatus belt 3 and to revise it according to being distributed on the divider belt the instantaneous loading measured value of goods, so that the goods on the divider belt load to keep constant, and how the program of ignoring divider carries.
For this purpose, its electric part comprises three complementary circuit controls and two digital computers that have its auxiliary equipment.
The whole control system comprises:
A) loop of control dispenser belt 15 speed,
B) weigh control loop and
C) loop of control extraction apparatus belt speed.
Its first loop a) can according to divider independently program carry the set-point, realize the speed linearization (its precision is+1/1000) of the divider belt 15 that will control.
This divider independently program carry the set-point with the numeral of metric ton (legal system) per hour be shown in digital indicator 2 ' on, and this set-point is according to one of two signals institute result calculated, also promptly:
1. total set-point signal of the whole dividers of equipment set, with expressed this signal of metric ton per hour by keying panel 22 ' generate.
2. the signal that produces from relevant divider, this signal is a ratio value, and constituted the independent setting point relevant with described divider, and the per metric ton kilogram with end product illustrates, this signal by means of some code drums (code wheels) produced and be presented at display 23 ' on.
These two signals are transported to the input end on first digital computer 24, and this computing machine can be carried out following operation:
(in metric ton/hour total set-point) * (in kilogram/metric ton to ratio value that should divider)=in kilogram/hour sequencing carry the set-point.
As a numerical example, we can say the demonstrative dispensing equipment that specifically uses, its total set-point is 32 tonnes/hour, and the independent set-point of each divider is 110 kilograms/tonne, it is 3520 kilograms/hour that the set-point is carried in its corresponding sequencing.
This sequencing carries the set-point to be presented on the one hand on the digital display device 21, then is used for the rapid change device 16A of control dispenser motor reducing transmission device 16 on the other hand.
This controller that changes device compares with actual speed measured value (it results from the sensor 16B that is contained in the motor reducing transmission device) by the conveying set-point 21 with sequencing, and it is constant to remain motor 16 its speed of drum 14A of driving divider 15.
Second control loop, control loop b weighs), can accomplish that control and the goods that accurately keep loading on the divider are a constant, and ignore the operational throughput of its sequencing, say promptly also how much speed of ignoring the divider belt is.
Disposed weighing controller 22 for this purpose, it has the intrinsic set-point of a sequencing.
In addition, from three strainmeter 11A of parallel installation, 11B, the signal of 11C has produced the actual transient measurement value of weighing on the divider, and this value is amplified and filtering by LOAD CELLS 23, and is fed to the weighing controller 22 with sequencing set-point.
When the difference between the actual transient measurement value (resulting from LOAD CELLS) of weighing on above-mentioned set-point and the divider is not zero, this controller just add one forward or backwards corrected signal its drives the drum 5A of extraction apparatus belt 3 in motor reducing transmission device 4() rapid change device 4A on, its effect is the quantity that increases or reduce the goods that arrive at this divider, thus eliminate detected weigh poor.
Have to be noted that when divider is in the light condition that brings into operation the output signal of this controller will be revised by its ramp generator, its effect is to load for smoothly gradually this divider; When the weight on divider was a little corresponding with fixedly installing of sequencing, this controller just responded and keeps constant weight on the divider.
The 3rd control loop c), the speed of belt is extracted in control, and it can control the linear speed of extraction apparatus belt exactly according to corrected signal (being provided by weighing controller 22).
As seeing, this weighing controller 22 provides at its output terminal and has revised the set-point signal forward or backwards for this purpose, they at first will with carry the set-point signal to mix mutually from first loop divider program a).The signal that mixes thus and produce is as the set-point of the rapid change device 4A of extraction apparatus belt motor 4.
Therefore this controller that changes device can be realized the continuous adjustment to the extraction apparatus motor speed by being compared with actual speed measured value (being produced by the speed pickup 4B that is installed in the motor reducing transmission device) in above-mentioned correction set-point.
Second computing machine that is installed in the weighing controller 22 is used to realize following calculation procedure.
(actual instantaneous operational throughput)=(the actual instantaneous weight on divider) * (actual instantaneous velocity of divider belt).
Weight information from LOAD CELLS 23 will be fed on one of some input ends of this computing machine for this reason, and simultaneously it is installed on the motor reducing transmission device of divider belt 15 from speed pickup 16B() velocity information be fed to another input end of this computing machine with the coded digital form.
The result of calculation that this actual instantaneous operational throughput is calculated with digital form directly explicit digital display device 24 ' on.
Therefore the reading that operating personnel only need more above-mentioned two displays (carry set-point 21 and actual instantaneous operational throughput 24 ') can check out promptly whether this divider is normal running, and these two show that numbers should be identical under the general operation situation.
Computing machine 22 can also be realized counting and various controlling alarm by two electronic circuits.
As be used for counting, then the actual instantaneous conveying output signal of linearization promptly converts a proportional pulse signal to, and it can make this output of signal satisfy various requirement, also promptly say a pulse by a unit of processing goods, as corresponding 100 grams of 1 pulse, or a pulse of per 1 kilogram of correspondence etc.
So this signal that is adopted is counted and is stored in the digital counter 25, so that understand the quantity of the goods that passed through.
For realizing the purpose of controlling alarm, the conveying set-point signal 21 of instantaneous conveying signal of reality and divider be compared.Its comparer has two adjustable alarming threshold values, for example at+2% place; If above-mentioned signal has surpassed one of two threshold values, then at the end of given time cycle, control circuit 26 will make light or box-sounding relay connect, and at the end in given cycle long period, another relay will disconnect total set-point of distributor.
Suitable instruction can be defeated by computing machine 22 in 27 places.
The present invention has only given explanation with regard to a preferred embodiment and has introduced obviously, can utilize some equivalent technologies for its various parts in addition in not unconventional scope of the present invention.
Claims (7)
1, can realize the continuous according to the order of sequence device of accurately weighing and supplying with to particle or Powdered goods; comprise that two are used to the independent endless-belt that extracts and distribute; wherein the endless-belt of divider is weighed as a whole continuously; and the speed control of its extraction element is characterized in that comprising to the measured value that is distributed in the instantaneous loading of goods on the divider belt:
-be used to store the funnel (2) of the goods that will weigh, dispose the endless-belt (3) that is used to extract in its lower section, two supporting drums (5A, one of 5B) by motor reducing transmission device (4) with the above-mentioned belt of variable speed drives,
-linearly dispose in its lower section divider (8) with the endless-belt (3) of extraction apparatus, it is made of a fixing T shape support (9), this support has 3 pillar (10A in its each end, 10B, 10C), be used to support three flexible Weighing indicator (11A of strainmeter type, 11B, 11C), these indicators have flexible suspension hawser (12A, 12B, 12C), divider (8) also comprises a microlight-type tubular bracket (13), and the endless-belt (15) of the drum of divider (14A-14B) is supported by described support (13), one of drum (14A-14B) by motor reducing transmission device (16) with variable speed drives
-between the transmission gear for electric motor (4) of motor reducing transmission device (16) that drives divider endless-belt (15) and extraction apparatus (3) endless-belt, an electronic control circuit F1-F2 is arranged, being controlled to be of described loop controlled the speed of extraction apparatus (3) endless-belt according to being distributed in the instantaneous loading measured value of goods on the divider belt (15).
2, according to the device of claim 1, it is characterized in that the horizontal curtain of chain (7-18) is configured in the superinverse side in goods setting point just, be transported to product amount on extraction element (3) and the divider (8) in order to adjustment, and be used to separate the influence that described goods fall with the outlet side goods that reduce at these devices.
3, according to the device of claim 1 or 2, the motor reducing transmission device (4,16) that it is characterized in that extraction element (3) and divider (8) is for having the direct current lamination winding arrangement of speed output shaft.
4, according to the device of claim 1, it is characterized in that the speed of the electronic section of this system according to the instantaneous loading measured value control extraction element (3) on the divider belt (15), and its electronic section comprises three complementary control loop chains, and two digital computers that have auxiliary equipment; First loop can be come the linearization speed of control dispenser belt (15) according to the stand-alone program conveying set-point of divider (8), the rapid change device 16A of its output signal control dispenser motor reducing transmission device (16) of the computing machine in this loop (24), this controller that changes device is compared with actual velocity measurement (being provided by the speed pickup 16B that is installed in the motor reducing transmission device 16) by sequencing being carried set-point (21), thereby the velocity-stabilization that can constantly keep motor (16 ') is constant; Second loop be used to control and accurately keep goods on the divider constant load and no matter the conveying of sequencing how, this loop comprises weighing controller (22), it has the conveying fixed weight set-point of sequencing, and from LOAD CELLS (23 its receive from strainmeter 11A, 11B, the signal of 11C) receives the actual transient measurement value of weighing on the divider, according to the difference between described sequencing set-point and described actual transient measurement value, described weighing controller (22) will be forward or backwards corrected signal be added on the rapid change device (4A) of motor reducing transmission device (4) of extraction element (3); Tertiary circuit can be according to the linear speed of accurately being controlled extraction element (3) by the added corrected signal of weighing controller (22), described signal will carry the set-point signal to mix mutually with the divider sequencing in first loop, and be fed to as revising the set-point on the change device (4A) of motor reducing transmission device (4) of extraction element (3), this controller that changes device compares by set-point and actual speed measured value (being provided by the speed pickup 4B that is installed in the motor reducing transmission device 4) will be provided, and the lasting speed of adjusting this motor (4) makes it constant.
5, according to the device of claim 4, it is characterized in that when divider is unloaded, at starting state, the output signal of weighing controller (22) will be revised by the signal of ramp generator (it can make divider belt 15 realize level and smooth gradually loading), and when the weight on the divider belt (15) was corresponding with the plug-in set-point in the controller (22), the latter just responded and keep a constant weight on divider belt (15).
6,, it is characterized in that second computing machine is used to finish following calculating according to the device of claim 5:
(actual instantaneous conveying)=(the actual instantaneous weight on the divider belt) * (actual instantaneous velocity of divider belt), the information of weighing from LOAD CELLS (23) will be fed to one of this input end and computer, velocity information from speed pickup (16B is installed in the motor reducing transmission device of divider belt 15) occurs with the coded digital form simultaneously, and be fed to the other end of aforementioned calculation machine input port, its result directly is presented on the digital indicator (24) with digital form for this actual instantaneous operational throughput, and compare, thereby can check whether dispenser device (8) is working properly with the conveying set-point (21) of divider.
7, according to the device of claim 6, the actual instantaneous conveying output signal that it is characterized by second computing machine is handled by two electronic circuits: it is used for counting in first circuit, be linear actual instantaneous conveying signal and will convert the proportional pulse signal to, pulse by a unit of distribution goods, this pulse is counted and is stored in the digital memory (25), thereby can be determined the quantity of the goods that passed through; It is used for controlling alarm in second circuit, actual instantaneous conveying signal (wherein has two adjustable alarming threshold values) and compares with the signal of the conveying set-point (21) of divider in a comparer, if surpass one of above-mentioned two threshold values, then alarm control circuit (26) will make light and/or audible alarm relay work at the end in cycle preset time, and, make another control the total relay work that disconnects of this dispenser device at the end in given cycle long period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105675 CN86105675A (en) | 1986-07-23 | 1986-07-23 | Be used for particle or the continuous according to the order of sequence feedway of accurately weighing of Powdered goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105675 CN86105675A (en) | 1986-07-23 | 1986-07-23 | Be used for particle or the continuous according to the order of sequence feedway of accurately weighing of Powdered goods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86105675A true CN86105675A (en) | 1988-02-24 |
Family
ID=4802912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86105675 Pending CN86105675A (en) | 1986-07-23 | 1986-07-23 | Be used for particle or the continuous according to the order of sequence feedway of accurately weighing of Powdered goods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86105675A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846540A (en) * | 2010-04-08 | 2010-09-29 | 上海烟草（集团）公司 | Method for controlling speed of elevating belt of feeder and material conveying system |
| CN103323087A (en) * | 2012-03-20 | 2013-09-25 | 联胜（中国）科技有限公司 | Weight sensing device and weight sensing system |
| CN103640907A (en) * | 2013-12-05 | 2014-03-19 | 重庆市酉阳县酉好化肥有限公司 | Accurate-metering charging device |
| WO2015007072A1 (en) * | 2013-07-15 | 2015-01-22 | 山西新元自动化仪表有限公司 | Sliding groove scale |
| CN104444422A (en) * | 2014-11-11 | 2015-03-25 | 上海人造板机器厂有限公司 | Double-weighing metering storage bin |
-
1986
- 1986-07-23 CN CN 86105675 patent/CN86105675A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846540A (en) * | 2010-04-08 | 2010-09-29 | 上海烟草（集团）公司 | Method for controlling speed of elevating belt of feeder and material conveying system |
| CN103323087A (en) * | 2012-03-20 | 2013-09-25 | 联胜（中国）科技有限公司 | Weight sensing device and weight sensing system |
| WO2015007072A1 (en) * | 2013-07-15 | 2015-01-22 | 山西新元自动化仪表有限公司 | Sliding groove scale |
| CN103640907A (en) * | 2013-12-05 | 2014-03-19 | 重庆市酉阳县酉好化肥有限公司 | Accurate-metering charging device |
| CN103640907B (en) * | 2013-12-05 | 2016-01-13 | 重庆市酉阳县酉好化肥有限公司 | Accurate measurement charging device |
| CN104444422A (en) * | 2014-11-11 | 2015-03-25 | 上海人造板机器厂有限公司 | Double-weighing metering storage bin |
| CN104444422B (en) * | 2014-11-11 | 2017-06-09 | 上海人造板机器厂有限公司 | A kind of pair of Weighing feed bin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4729442A (en) | Apparatus for the weighted dosing of granulated or pulverulent products | |
| CN206013759U (en) | Automatic coal blending, belt feeder of weighing | |
| CN105067093B (en) | A kind of quick weighing technique online of instant noodles block | |
| CN86105675A (en) | Be used for particle or the continuous according to the order of sequence feedway of accurately weighing of Powdered goods | |
| CN106586088A (en) | Machine vision measurement detection device for steel battery shells, and detection method | |
| CN209382808U (en) | A kind of belt conveyor | |
| CN107892006A (en) | A kind of intelligent weighing sub-packaging system | |
| CN108818952A (en) | A kind of concrete multiple material intelligent distribution devices and methods therefor | |
| CN112607448B (en) | Feeding equipment, control method and system | |
| CN212075719U (en) | Automatic feeding mechanism that arranges of metal product | |
| CN210133797U (en) | Constant weight coal feeder type main shaft skip loading equipment | |
| CN217731851U (en) | Full-automatic branch material intelligence belt feeder of weighing | |
| CN103342224A (en) | Method and device for automatically controlling discharging amount of waste plastics | |
| CN206627196U (en) | Low discharge high-precision electronic burden balance | |
| JPH0733139Y2 (en) | Combination weighing device | |
| CN204021826U (en) | Dual weighing feeder | |
| CN207954315U (en) | A kind of aluminium powder quantitative adding device that error is small | |
| CN1029334C (en) | High-precision single-side weighing method and apparatus thereof | |
| CN207683881U (en) | A kind of intelligent weighing packaging device with independent conveying device | |
| CN212082555U (en) | Automatic weighing device for trace additives | |
| CN110282181A (en) | The automatic selecting system of cotton spinning finished product spindle counterweight and its control method | |
| CN210735423U (en) | Food continuous feeding device | |
| CN210175734U (en) | Cantilever weighing equipment | |
| CN109879074A (en) | A kind of ceramic raw material static weighing feed system | |
| CN217919860U (en) | Pressure sensing conveyor belt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |