CN2318622Y - Digital modulation measuring apparatus for packer - Google Patents
Digital modulation measuring apparatus for packer Download PDFInfo
- Publication number
- CN2318622Y CN2318622Y CN 98209866 CN98209866U CN2318622Y CN 2318622 Y CN2318622 Y CN 2318622Y CN 98209866 CN98209866 CN 98209866 CN 98209866 U CN98209866 U CN 98209866U CN 2318622 Y CN2318622 Y CN 2318622Y
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- Prior art keywords
- graduated cylinder
- pound
- weighing
- feed
- expression
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- Expired - Fee Related
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- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The utility model relates to a measuring apparatus, particularly a digital modulation measuring apparatus for packers. The apparatus adopts a static digital modulation measuring scheme. Among the feedings in a pound measuring container, not only the main feeding adopts quantitative feeding, but also the fine adjusted feeding adopts a mode of digital quantization feeding. Accordingly, compared with usual dynamic continuous quantity modulation measuring apparatus, the utility model has the advantages of higher measuring precision and rapid work. The utility model is especially suitable for the needs of high precision measurement and fast package of granular goods, such as chemical industry, grains, etc.
Description
The utility model relates to a kind of meausring apparatus, and particularly a kind of packaging machine is with quantitative numerical control meausring apparatus.
Package packing machine is the important terminal device of chemical industry (as chemical fertilizer), food enterprises such as (as grains).Meausring apparatus is as this mechanical important component part, and the speed of its weighing and precision then are to weigh the important indicator of this performance.The weighing mode of the meausring apparatus of Shi Yonging now, normally earlier to the weighing pound in the mode of constant volume by one behind the disposable main feed of main amount letter, again with a little flow dynamics feed or all adopt dynamic feed.Limit feed limit weighing in the process of feed, then according to the weighing result that records in dynamically, decision stops feed, promptly so-called Dynamic Weighting continuous quantity regulation and control or be called for short dynamic regulation.That its actual final value that obtains of this regulation device equals dynamic measured value and the material of having dished out dispenser but not fallen fully as yet and value, and the irregular weighing apparatus of dynamic feeder and material itself all can cause the undulatory property of flow makes the weighing result out of true.Apparent is exactly to adopt the method that reduces moving flow to improve the precision of weighing the sacrifice time than effective method in the meausring apparatus of this dynamic regulation, this also just certainly will reduce work efficiency, makes promptly the sample use of working method of continuous quantity regulation and control of this Dynamic Weighting be subjected to certain restriction.
The purpose of this utility model just provides a kind of number of static weighing sampled digital amount regulation and control feed and transfers meausring apparatus.Especially a kind of meausring apparatus than the tailored powder pelletized product.
The utility model is to realize like this, at first give earlier storing up and treat weighing with one, its volume storing amount infinite tendency but be not more than constant volume master's graduated cylinder of nominal basis weight, the container in the weighing pound (being equivalent to the scale pan) is main feed for the first time, carries out weighing after treating promptly to leave standstill after stable.Then its difference is not exported with the binary numeral amount if reach quantitative requirement.Represent difference as level"1", level "0" represents not have.Remove to promote simultaneously one group of secondary feed of the secondary graduated cylinder fine tuning of fine tuning scalar correspondingly with its level"1" position again.The graduated cylinder number of this graduated cylinder group equates that with the figure place of binary number volume is corresponding one by one with its position of setting each other off.Represent 50 grams as the level"1" of a certain position, then its pairing graduated cylinder also is that 50 its principle of design of gram and main graduated cylinder are same.The process of whole fine tuning feed can repeat through a basic timer, behind the promptly quantitative main feed, leaves standstill and detects the back and quantize fine tuning-leave standstill detection again until finishing, and just so-called number is transferred weighing, and weighing is able to accurately.Because giving storing and can finishing during it leaves standstill of its major-minor graduated cylinder makes operating rate be improved again.
The dyadic number that is used for fine tuning, weighing be the expression true weight that can obtain by sample circuit in the device of electronic platform scale simulate magnitude of voltage and setting value relatively or calculate the back and obtain by touching the number conversion circuit.Also can touch number conversion earlier and obtain by subtraction again, in mechanical meausring apparatus, can convert to earlier and simulate voltage signal, become binary signal through touching number conversion again by the weight difference of electronic circuit with actual measurement.
The utility model is owing to being the value that records on static basis thereby having higher weighing precision; Owing to adopted the digital quantization feed, when treating that weighing breaks away from the time that major-minor graduated cylinder dispenser only depends on the whereabouts later on, has solved the contradiction of time and precision with forging a good relationship with respect to the scheme of continuous quantity regulation and control.
Enforcement of the present utility model can obtain higher fast degree as adopting projection electronic weighing, as adopt mechanical weighing to cooperate Electronic Control, fast degree is low slightly though work, but satisfy fast degree requirement condition under, have directly perceived, easily check and correction, advantage that cost is low and consolidate utility model to select the electronic-controlled scheme of mechanical weighing be main, introduce embodiment.Embodiment is as follows:
Fig. 1 is the general structure schematic diagram
Fig. 2 is Electronic Control and fine tuning schematic diagram
The lower end that is positioned at former feed bin (1) is a main graduated cylinder (3) that a flashboard is respectively arranged up and down.Open upper flashboard (2), close lower flashboard (4), can be communicated with the storing that gives that former feed bin (1) is finished main graduated cylinder (3); Storing finishes to cut out upper flashboard (2), opens lower flashboard (4) and can finish main graduated cylinder (3) feeding intake in the charge cask of electronic platform scale that is equivalent to the scale pan or machinery pound.The difference of the principle of design of main graduated cylinder (3) and the main graduated cylinder of common Dynamic Weighting is, the volume storing amount of the graduated cylinder that Dynamic Weighting is used must be much smaller than scalar quantity, otherwise can't fine tuning.And the maximal value of its charge of main graduated cylinder of the present utility model (3) can be infinitely near or equal scalar quantity; One side of main graduated cylinder (3) has a secondary feed bin (27).Its upper end communicates with former feed bin (1) by screen (28).The lower end is the one group of secondary graduated cylinder (group) (23) of fine tuning that can finish storing by secondary feed bin (27).The secondary graduated cylinder (23) of tube frame shape structure can be in last shield (24), and move left and right is not less than the position of 3 secondary graduated cylinders (23) in the bottom plate (22).When placing limit on the right-right-hand limit, it can give storing by secondary feed bin (27) with supporting plate (22) combination, when putting the centre position and last shield (24) combination, isolate with secondary feed bin (27), the position that the centre of secondary graduated cylinder (23) fills raw material when the limit on the left position exceeds supporting plate (22), finishes the feeding intake to charge cask with main graduated cylinder (3) said function.The number of secondary graduated cylinder (23) equates with the figure place of the binary number of the difference of calibration value with expression weight measured value, and mapping one by one, its single charge amount equates with the expression amount of the corresponding positions of binary number, also is 50 grams as a certain its secondary graduated cylinder (23) that sets each other off the position of bit representation 50 grams.But its principle of design should be identical with main graduated cylinder (3); Secondary graduated cylinder (group) (23) is controlled by the binary number and the mechanical driving device of timing circuit control in the frame (21).Empty frame (36) expression has the combination of the secondary graduated cylinder (group) (23) of drive unit.Dotted line (35) expression abridged same device.By transistor G and current-limiting resistance (R
I), timing resistor (R
T3) electric capacity (C
T3) the electronic delay release-push formed, its base input end is received the respective end of binary number, when this end is " 1 " impulse level, by electromagnet (30) armature (29), fork (31), connecting rod (32) presses place spring (33) that the material that it is good that secondary graduated cylinder (23) will give storage is launched.Electromagnet (30) dead electricity when regularly finishing, secondary graduated cylinder (23) is got back to the initial storing position of giving by the effect of spring (33) along the hold concurrently pedestal (34) of guide hole of spring.Certainly this drive unit also can adopt the qigong or hydraulically operated equipment; The obtaining of binary number of expression weight difference is mechanical weighing mode because this example selects for use, and the simulating signal that pressure transducer (16) is gathered has represented that weight difference only needs to touch number conversion through A/D admittedly and gets final product.This routine analog to digital conversion piece (b
1) model be approach type AD571 gradually, pin 13 is for simulating input end, 11 is the conversion and control end, 17 is the DSR end, 2 °-2
nBe the binary number output terminal, arrow is represented outbound course, and port " ν " is for simulating input end, and selecting for use of amplifier piece (F) can require to accept or reject according to pressure transducer (16) and A/D piece.Adjustable resistance W
1, be feedback resistance, W
2Be zero-regulator resistor; Basic timer (b
3) by 555 of time base circuits and resistance (R
T1) electric capacity (C
T1) monostable circuit formed constitutes.Its 555 pin 1 are that earth terminal, 2 is the low level control end, and 3 is output terminal, and normality is a low level.4 for the control end operating conditions is a high level, and 6 is the high level control end, and 7 is discharge end, and 8 is positive power source terminal (pin 3 upsets when low level control port input low level); Monostable (b2) is made of monostable dedicated block 54/74122, the resistance (R that links to each other with pin 9,11,13
T2) electric capacity (C
T2) the formation timing element, pin 3,4,5 is controlled by the output state of photoelectric detection system, the logical relation of pin 1-6 be for be high level simultaneously when 3,4,5 pin, 1,2 pin be high level fade to down jumping along the time, pin 6 is exported negative square pulse to an AD571 pin 11 and is made it to finish conversion work.Otherwise 54/74122 pin 6 is a high level, makes AD571 put the high resistant waiting state.Actual monostable (b
2) just be monostable (b
3) following jumping along converting negative square pulse to adapt to A/D conversion block (b
1) job requirement; Photoelectric detection system is used for the weighing result of measurement mechanical pound and whether reaches requirement.Be respectively an infraluminescence pipe (26) in light-conductive hole (20) both sides relatively at pound bar (10) among the figure, photosensitive tube (25), when with light-conductive hole (20) an exportable level"1" or level "0" signal during the position in line, fixed this of this convention is the weighing result composite demand during position in line and exports a level "0"; Arrow on the pound bar (10) represents that it can swing up and down; The arrow of photosensitive tube (25) upper end is only represented the direction that signal transmits; Or door piece (b
4) through capacitance (C
H) as trigger; Rejection gate piece (b
5) finish indication as weighing, two input pins 1,2 are level "0" and represent that weighing is good and export a level"1" signal from the pin that arrow is arranged; Promptly only feed intake at every turn leave standstill after, monostable (b
3) rejection gate (b during excessively to metastable state by temporary stable state
5), represent when pin 1 also is zero for " 0 " pin 2 weighing finish the output terminal level for " 1 " so far the process of its digital quantity regulation and control be at first to feed intake for the first time and simultaneously through port " Q " or door (b to the charge cask of electronic platform scale or machinery pound by main graduated cylinder (3)
4) electric capacity (C
H) start basic timer (h
3) make pin 3 upsets be high level, steady temporarily end back is if the photoelectricity inspection also finishes rejection gate piece (b for hanging down flat then weighing
5) the output level"1".Otherwise monostable (b
3), through monostable (b
2) make and simulate piece (b
1) with pressure transducer (16) adopt the simulation volume of expression weight difference convert the binary digit amount to and then remove to promote the secondary graduated cylinder (group) of fine tuning (23) and continue to feed intake.Simulated block (b meanwhile
1) pin 17 send a negative pulse and make monostable (b
3) restart, (this enabling signal also can be obtained by charging gear in the feed process) finishes until weighing to realize cycle detection.Because the secondary graduated cylinder of main graduated cylinder of the present utility model (3) (23) is even what all adopt is that the principle of dosing also can be described as digital weighing from mechanical angle.
The utility model is used for representing that the obtaining of binary digit amount of weight difference has dual mode usually, a kind of is can try to achieve the real voltage that weighs earlier to simulate value and make it to compare calculating with setting value in the device of projection electronic weighing, tries to achieve the binary number of representing weight difference through simulating conversion again.It then is maybe directly to obtain the simulation volume of representing weight difference under pound bar (10) of this end by pressure transducer (16) from pound stone roller (17) lower end that this example adopts the lever type mechanical pound.Its concrete implementing method is as follows: pound bar (10) lies in a horizontal plane on the fulcrum block (14) on the frame (13) by intermediate support pound cutter (15); The placement of pound bar (10) is claimed an end of thing, and one serves as that the main charge cask of forming is contacting of power by weight cutter (9) with pound bar (10) with mouth pipe (5); Mouth pipe (5) is the barrel of a hollow, on can receive main graduated cylinder (3), feeding intake of secondary graduated cylinder (23), but under can make open and close type and make it to become charge cask, mouth pipe (5) also can pass through electromagnet (8), pneumatic and the hydraulically operated equipment of armature (7) or other clamps thing bag (11) by bag card (6) and constitutes charge cask it on, and (this card is packed to be changed to single amplification, actual uniform more than being two groups) this kind container can make the device simplification when rate request is not high; Travelling belt (12) is used for doing the conveying of product; Pound stone roller (17) is being claimed that by screw (18) thing is relative, and it is fixed that another pound bar (10) then of fulcrum pivot (15) raises solidating; Also have a hunting range that limits pound bar (10) at an end of the pound of pound bar (10) stone roller (17) with the relatively-stationary limitting casing of frame (13) (19), detect the light-conductive hole (20) of pound bar (10) position when being used to weigh, be two of horizontal levels with light-conductive hole (20) and dispose a light emitting diode (26) and photosensitive tube (25) respectively with one; In the lower end of pound stone roller (17) or next end of the pound bar (10) of its homonymy also have one can directly record and claimed thing weight and the pressure transducer (16) that does not have the difference of definite value.Its output analog quantity is by frame (21), and secondary graduated cylinder (group) (3) constitutes cycle control of the present utility model.
Claims (4)
1, one by major and minor graduated cylinder, weighing pound, and a kind of packaging machine that numerical control device is formed is transferred meausring apparatus with quantitative number, it is characterized in that
The volume storing amount infinite tendency of the main graduated cylinder of described device (3) but be not more than nominal basis weight, open upper flashboard (2) and close lower flashboard (4) and can finish by former feed bin (1) and give storing, close the main feed that upper flashboard (2) unlatching lower flashboard (4) can be finished the charge cask of symmetrical octarius;
Described secondary graduated cylinder (23) is one group, its number equates and mapping one by one with the figure place of the binary number of expression weight difference, storing amount infinite tendency and be not more than the binary number bit representation amount of setting each other off, and under the control of dyadic number, can finish the secondary feed of fine tuning of the charge cask that gives storing and symmetrical octarius by secondary feed bin (27);
The dyadic number of expression weight difference is at basic timer (b in the described numerical control device
3) and weighing finish under the control of signal, after leaving standstill certain hour whenever for a defective material, the charge cask of the symmetrical octarius amount of the secondary graduated cylinder of main graduated cylinder (3) (group) (23) detects once result, if be not inconsistent with the calibration value of setting, then dyadic number level"1" position makes corresponding secondary graduated cylinder (23) while feed once, and this process can repeat to finish until weighing.
2, the expression actual weight that recorded by pressure transducer (16) of the binary number of representing weight difference by right 1 described requirement simulates magnitude of voltage and calibration value relatively or calculate the back by touching number conversion piece (b
1) obtain, perhaps will survey the value that simulates of weight earlier and touch number conversion earlier, obtain by calculating again.
3, connect the 2 system numbers that right 1 described device is represented weight difference, (in the lever type mechanical pound), by placing pound stone roller (17) down or pound bar (10) pressure transducer (16) down of pound stone roller (17) one ends, obtain the voltage that expression and real title value differ earlier and simulate value, obtain through touching number conversion again.
4, be installed on mouthful pipe (5) by electromagnetism, pneumatic or hydraulically operated equipment by thing bag (11) by the charge cask of right 1 described device weighing pound and form:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98209866 CN2318622Y (en) | 1998-02-13 | 1998-02-13 | Digital modulation measuring apparatus for packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98209866 CN2318622Y (en) | 1998-02-13 | 1998-02-13 | Digital modulation measuring apparatus for packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2318622Y true CN2318622Y (en) | 1999-05-12 |
Family
ID=33965100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98209866 Expired - Fee Related CN2318622Y (en) | 1998-02-13 | 1998-02-13 | Digital modulation measuring apparatus for packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2318622Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061991A (en) * | 2013-03-21 | 2014-09-24 | 成都瑞途电子有限公司 | Automatic feedstock weighing device |
| CN112729497A (en) * | 2021-01-19 | 2021-04-30 | 湖北航鹏化学动力科技有限责任公司 | Efficient medicament weighing method and device |
-
1998
- 1998-02-13 CN CN 98209866 patent/CN2318622Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061991A (en) * | 2013-03-21 | 2014-09-24 | 成都瑞途电子有限公司 | Automatic feedstock weighing device |
| CN112729497A (en) * | 2021-01-19 | 2021-04-30 | 湖北航鹏化学动力科技有限责任公司 | Efficient medicament weighing method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |