CN113819993A - Calibration method of computer combination scale - Google Patents
Calibration method of computer combination scale Download PDFInfo
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- CN113819993A CN113819993A CN202111145546.2A CN202111145546A CN113819993A CN 113819993 A CN113819993 A CN 113819993A CN 202111145546 A CN202111145546 A CN 202111145546A CN 113819993 A CN113819993 A CN 113819993A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000005303 weighing Methods 0.000 claims abstract description 98
- 238000003860 storage Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims description 29
- 230000003068 static effect Effects 0.000 claims description 15
- 238000004088 simulation Methods 0.000 claims description 13
- 238000012937 correction Methods 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 241000758791 Juglandaceae Species 0.000 description 3
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- 235000011962 puddings Nutrition 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
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- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 208000037063 Thinness Diseases 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
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- 206010048828 underweight Diseases 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
The invention relates to a calibration method of a computer combination scale, which comprises a dynamic measurement calibration method, wherein in the first step, a plurality of simulated loads are placed in a blanking groove of the computer combination scale, each simulated load comprises a hollow hexahedral load body, any three adjacent side surfaces of the load bodies are transited through a spherical structure, and each simulated load has different weights; setting the vibration amplitude and vibration time of a main vibration disc and a line vibration disc of the computer combination scale, respectively feeding each simulated load into a corresponding storage hopper through vibration of the main vibration disc and the line vibration disc of the computer combination scale, wherein the simulated load in each storage hopper falls into a corresponding empty weighing hopper; and thirdly, discharging corresponding to a group of weighing hoppers, enabling the discharged simulated loads to fall into the collecting hoppers, and calculating the total weight of each simulated load in the collecting hoppers so as to judge whether the weighing corresponding to the group of weighing hoppers is accurate or not. The invention provides a calibration method capable of dynamically metering and calibrating a computer combination scale.
Description
Technical Field
The invention relates to the field of weighing apparatus measurement calibration, in particular to a calibration method of a computer combination scale.
Background
The computer combined scale is also called as selective combined scale, is a key metering device on the quantitative commodity production line, has the advantages of high weighing automation degree, wide weighing object range, high weighing accuracy, high weighing speed and the like, is widely applied to the production fields of food, medicine, chemical industry and the like, and is a high-tech electronic metering product acknowledged in the quantitative packaging product industry at present.
Traditional automatic packing scale of ration is reinforced while weighing in limit, when being close to predetermineeing the target value, and feed rate slows down, if the single quality of material is great, causes the overweight or the underweight of ration packing commodity very easily, has great error and inefficiency. Compared with the traditional single-head electronic scale, the computer combination scale has obvious quantitative weighing advantages, and particularly has the advantages of weighing materials with irregular shapes and uneven mass, such as quick-frozen glue balls, walnuts and other round objects. And a plurality of weighing units independently weigh in a vibration feeding mode, and the combination closest to the target preset value is obtained according to the mathematical statistics and the optimal combination calculation for packaging production.
The structure of the existing computer combination scale is shown in fig. 1: including unloading silo 1, main vibration dish 3, ring locate main vibration dish outlying line vibration dish 4, a plurality of storage hopper 5 that arrange along circumference in proper order, a plurality of weighing hopper 6 that arrange along circumference in proper order and the collection fill 8 that the position leaned on the bottom most, weighing hopper 6 one-to-one sets up in the downside of each storage hopper 5, and weighing hopper weighs material 2 in it through weighing sensor 7. The general 8 ~ 32 of storage hopper, during the use, the material from the lower silo above shakes through main vibration dish and gets off, and the line vibration dish of storage hopper upside is arrived to the material, and when the storage hopper is empty, according to the vibration time that sets for, with the material from the line vibration dish vibration to the storage hopper, when the blowing of the weighing hopper below the storage hopper is empty, the storage hopper is opened, and the blowing is to the weighing hopper on, and the weighing hopper weighs the material in it.
Assuming that the target weight is 500g and the weighing hoppers are 12 in total, we take a combination of 5 hoppers (i.e. taking the weight of five weighing hoppers and adding up the weight as a result), and there are 792 methods for taking 5 hoppers out of 12 weighing hoppers
Since 5 buckets are required to be taken, 100g is taken as the target weight of each bucket when the vibration time of the linear vibration plate is set, the vibrated materials are close to 100g, the materials have the sizes and the amounts which are not uniform, so the weight of each bucket is much less, but the materials are close to 100g, not only heavy buckets but also light buckets can appear, even if the weight deviation of some buckets is large, 792 taking methods are adopted, the probability that the weight of 5 buckets is added to 500g is very high, the error of plus or minus 0.1-2g is certainly generated, but the error is much smaller than the net content measurement test (marking the net content of 500g and allowing the shortage of 15g) of the quantitatively packaged commodities, and the use requirement is completely met. Through the preferable combination, the production operation can be efficiently carried out by a quantitative packaging commodity production enterprise.
In view of the advantages of the computer combination weigher, the computer combination weigher is more and more favored by the enterprises producing the quantitative packaging commodities, and related manufacturers in China also emerge like bamboo shoots in spring after rain.
Disclosure of Invention
The invention aims to provide a calibration method capable of dynamically metering and calibrating a computer combination scale.
In order to solve the technical problems, the technical scheme of the calibration method of the computer combination scale is as follows:
a calibration method of a computer combination scale comprises a dynamic metering calibration method, wherein the computer combination scale is calibrated at a maximum charge weight weighing point and a minimum charge weight weighing point of the computer combination scale respectively, and each calibration process comprises the following steps:
the method comprises the following steps that firstly, a plurality of simulation loads are placed in a blanking groove of a computer combination scale, each simulation load comprises a hollow hexahedral load body, the load bodies are made of metal materials, any three adjacent side surfaces of the load bodies are in transition through a spherical structure, the simulation loads have different weights, and the simulation loads with different weights are marked by different patterns; setting the vibration amplitude and vibration time of a main vibration disc and a line vibration disc of the computer combination scale, respectively feeding each simulated load into a corresponding storage hopper through vibration of the main vibration disc and the line vibration disc of the computer combination scale, wherein the simulated load in each storage hopper falls into a corresponding empty weighing hopper; and thirdly, unloading materials corresponding to the weighing hoppers in one group, enabling the unloaded simulated loads to fall into the collecting hoppers, and calculating the total weight of the simulated loads in the collecting hoppers according to the pattern marks corresponding to the simulated loads in the collecting hoppers so as to judge whether the weighing of the weighing hoppers corresponding to the group is accurate.
The pattern marks are numerical marks.
The digital mark is arranged on each spherical structure.
Lightening holes communicated with the inner cavity of the load body are formed between the three pairs of opposite side surfaces of the load body, the three lightening holes are mutually vertical, and concave structures located between two corresponding adjacent spherical structures are arranged on the periphery of the load body between the corresponding adjacent lightening holes.
The number of the simulation loads is not less than 300, and the weight of a single simulation load is between 10g and 18 g.
And an image acquisition device for photographing or shooting the analog load in the collecting hopper is arranged beside the computer combined scale, and the image acquisition device is connected with a computer.
The dummy load was made of SUS316 stainless steel material.
The calibration method also comprises a static calibration method, wherein the weighing hoppers are statically calibrated at 80% of the common weighing value or the maximum weighing value of the weighing hoppers, and the static calibration process comprises the first step of performing zero correction on each weighing hopper; secondly, selecting a group of analog loads with corresponding number, putting the analog loads into the storage hopper, controlling a material door of the storage hopper to open and close, so that all the analog loads in the storage hopper fall into the corresponding weighing hopper, inputting the total weight of the analog loads after the weighing hopper is stable, and pressing a calibration button to complete the static calibration of the weighing hopper; and thirdly, unloading the simulated load in the weighing hopper, observing whether the weight display of the weighing hopper returns to zero or not, and if not, performing zero correction and static calibration again.
The invention has the beneficial effects that: according to the invention, aiming at the fact that a computer combined scale is mainly applied to weighing of irregular round-like materials such as glue puddings, walnuts and the like, a group of simulated loads with different weights are designed, pattern marks are made on the simulated loads to facilitate calculation of the total weight of the simulated loads in a collecting hopper, and the simulated load density of a metal material is greater than that of an actual material, so that the simulated loads adopt a hollow structure, the volume of the simulated loads can be ensured to be closer to the real material, the simulated loads adopt a hexahedral structure, any three adjacent side surfaces of a load body are transited through a spherical structure, the round-like structure of the simulated loads is realized, the real material is closer to the real material, and enough blanking time is also ensured in the vibrating process; after a group of weighing hoppers are unloaded correspondingly, the unloaded simulated loads fall into the collecting hoppers, and the total weight of the simulated loads can be rapidly known according to the pattern marks corresponding to the simulated loads in the collecting hoppers, so that the dynamic calibration of the computer combination scale is completed.
Drawings
FIG. 1 is a schematic diagram of a computer combination scale according to the background art of the present invention;
FIG. 2 is a schematic diagram of a single simulated load according to the present invention;
FIG. 3 is a perspective view of FIG. 2;
in the figure: 1. a discharging groove; 2. material preparation; 3. a main vibration disc; 4. a wire vibration disc; 5. a storage hopper; 6. a weighing hopper; 7. a weighing sensor; 8. a collecting hopper; 9. a load body; 10. a spherical structure; 11. a concave structure; 12. lightening holes; 13. and (6) pattern marking.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The embodiment of the calibration method of the computer combination scale in the invention is shown in figures 1-2: the method comprises a dynamic metering calibration method and a static calibration method for the computer combination scale.
The dynamic metering calibration method is introduced as follows: the computer combination scale is calibrated at the weighing points of the maximum loading weight (Maxfill) and the minimum loading weight (Minfill) of the computer combination scale respectively, and if the maximum loading weight of the computer combination scale is 1000g and the minimum loading weight is 500g, the computer combination scale is dynamically metered and calibrated at the weighing points of 1000g and 500 g.
The calibration process for each time is as follows:
the method comprises the following steps that firstly, a plurality of simulated loads are placed in a discharging groove of a computer combination scale, each simulated load comprises a hollow hexahedral load body 9, the load bodies 9 are made of metal materials, any three adjacent side surfaces of the load bodies are transited through a spherical structure 10, the simulated loads have different weights, and the simulated loads with different weights use different pattern marks 13; setting the vibration amplitude and vibration time of a main vibration disc and a line vibration disc of the computer combination scale, respectively feeding each simulated load into a corresponding storage hopper through vibration of the main vibration disc and the line vibration disc of the computer combination scale, wherein the simulated load in each storage hopper falls into a corresponding empty weighing hopper; and thirdly, unloading materials corresponding to the weighing hoppers in one group, enabling the unloaded simulated loads to fall into the collecting hoppers, and calculating the total weight of the simulated loads in the collecting hoppers according to the pattern marks corresponding to the simulated loads in the collecting hoppers so as to judge whether the weighing of the weighing hoppers corresponding to the group is accurate.
In this embodiment, the analog load is made of SUS316 stainless steel material, and the pattern on the analog load is marked with digital marks distributed on each spherical structure of the analog load.
Lightening holes 12 communicated with the inner cavity of the load body are formed between the three pairs of opposite side surfaces of the load body, the three lightening holes 12 are mutually vertical, and an inner concave structure 11 positioned between two corresponding adjacent spherical structures is arranged on the periphery of the load body between the corresponding adjacent lightening holes.
An image acquisition device for photographing or shooting the analog load in the collecting hopper is arranged beside the computer combination scale, and the image acquisition device in the embodiment is an industrial camera. The image acquisition equipment is connected with a computer, and the computer is a palm computer.
The number of the analog loads in the embodiment is 900, the outer diameter of the analog load is 22-44 mm, the weight of the analog load covers the interval of 10g-18g, the analog loads with different weights are respectively marked by different Arabic numerals, and the numeral marks are engraved on the load body in a laser etching mode. As shown in Table 1, the number of the marks ranges from 001 to 900, and different numbers correspond to different weights.
TABLE 1 actual quality table for different simulated loads
The analog load can be subjected to regular and irregular reassignment according to the use frequency and the environment, and the actual value of the analog load needs to be stored after each reassignment. When the simulated load is used for carrying out static calibration and dynamic metering calibration on the computer combination scale, the actual mass of the load combined on one block can be rapidly determined through a computer or an intelligent terminal according to the serial number of the simulated load.
Assuming that the minimum charge value of the computer combination scale to be calibrated is 500g and the number of weighing hoppers is 8, when the minimum charge weight is used for calibrating the computer combination scale, a preset target value F is setn500g, all the simulated loads are placed in a discharging groove, a main vibrating disk and a wire vibrating disk of a computer combination scale feed the simulated loads into each independent storage hopper through vibration, when the weighing hoppers empty, the storage hopper switch is opened, the analog load enters the weighing hoppers for weighing, the computer combination weigher optimally combines the weighing data of the weighing hoppers in a very short time, according to the instruction of the computer combination scale, the unloading of a group of simulated loads is completed by opening and closing a specific group of weighing hopper switches each time, the computer combination scale considers that the sum of the simulated load weights in the group of weighing hoppers is 500g, after the simulated loads reach the collecting hopper, the industrial camera can rapidly acquire the pattern mark of each analog load by shooting the analog load, therefore, the real weight of each simulated load in the collecting hopper is calculated, and whether the weighing of the computer combination scale is accurate or not is judged. The calibration process of the computer combination scale at the maximum loading weight weighing point is basically the same as that of the computer combination scale at the minimum loading weight weighing point, but the preset target value FnBut, in contrast, will not be described in detail herein. Because the combination of weighing hopper is more, consequently need be to the calibration process of the dynamic measurement of computer combination balance for a dynamic time quantum, in certain time quantum, collect the combination weight that the fill collected many times, when this time quantum, the weighing of computer combination balance is all accurate every time, just explains that the weighing of computer combination balance accords with the requirement.
The static calibration method comprises the steps of carrying out static calibration on weighing hoppers at 80% of a common weighing value or a maximum weighing value of the weighing hoppers, wherein the static calibration process comprises the first step of carrying out zero correction on each weighing hopper; secondly, selecting a group of analog loads with corresponding number, putting the analog loads into the storage hopper, controlling a material door of the storage hopper to open and close, so that all the analog loads in the storage hopper fall into the corresponding weighing hopper, inputting the total weight of the analog loads after the weighing hopper is stable, and pressing a calibration button to complete the static calibration of the weighing hopper; and thirdly, unloading the simulated load in the weighing hopper, observing whether the weight display of the weighing hopper returns to zero or not, and if not, performing zero correction and static calibration again.
The common weighing value is a weighing value frequently used when the computer combination scale works, for example, the packaging weight of one bag of rice dumplings is 500g, the total weight weighed by five weighing hoppers is 500g, and the common weighing value of a single weighing hopper is 100 g. Since the sum of the weights of the plurality of dummy loads does not always completely coincide with 80% of the usual weighing value or the maximum weighing value of the weighing hopper, a certain error range is required, and the error range does not exceed 5%. I.e. the total weight of the dummy load placed in the holding hopper may be 95% to 105% of the usual weighing value, or 95% to 100% of the maximum weighing value.
The SUS316 has the advantages of corrosion resistance, wear resistance and the like, and because the density of the SUS316 is greater than that of real materials such as glue puddings and walnuts, in order to enable the shape of the SUS to be closer to the real materials, the volume of the load body is increased through lightening holes and hollow structures, so that the simulated load can be closer to the real materials in volume; the simulation load adopts the hexahedral structure, and the spherical structure between the adjacent side surfaces guarantees the sphere-like shape, so that the rolling can be realized under the vibration of the main vibrating disc and the line vibrating disc, the pattern marks arranged on the spherical structure can be observed more easily, the hole edges penetrating through the lightening holes corresponding to a pair of side surfaces and the load body which is integrally of the hexahedral structure can not roll as smoothly as a spherical object, and the vibration material distribution can be well realized.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A calibration method of a computer combination scale is characterized in that: the method comprises a dynamic metering calibration method, wherein the computer combination scale is calibrated at the weighing points of the maximum loading weight and the minimum loading weight of the computer combination scale respectively, and the calibration process at each time comprises the following steps:
the method comprises the following steps that firstly, a plurality of simulation loads are placed in a blanking groove of a computer combination scale, each simulation load comprises a hollow hexahedral load body, the load bodies are made of metal materials, any three adjacent side surfaces of the load bodies are in transition through a spherical structure, the simulation loads have different weights, and the simulation loads with different weights are marked by different patterns; setting the vibration amplitude and vibration time of a main vibration disc and a line vibration disc of the computer combination scale, respectively feeding each simulated load into a corresponding storage hopper through vibration of the main vibration disc and the line vibration disc of the computer combination scale, wherein the simulated load in each storage hopper falls into a corresponding empty weighing hopper; and thirdly, unloading materials corresponding to the weighing hoppers in one group, enabling the unloaded simulated loads to fall into the collecting hoppers, and calculating the total weight of the simulated loads in the collecting hoppers according to the pattern marks corresponding to the simulated loads in the collecting hoppers so as to judge whether the weighing of the weighing hoppers corresponding to the group is accurate.
2. Calibration method according to claim 1, characterized in that: the pattern marks are numerical marks.
3. Calibration method according to claim 2, characterized in that: the digital mark is arranged on each spherical structure.
4. Calibration method according to claim 1, characterized in that: lightening holes communicated with the inner cavity of the load body are formed between the three pairs of opposite side surfaces of the load body, the three lightening holes are mutually vertical, and concave structures located between two corresponding adjacent spherical structures are arranged on the periphery of the load body between the corresponding adjacent lightening holes.
5. Calibration method according to claim 1, characterized in that: the number of the simulation loads is not less than 300, and the weight of a single simulation load is 10g-18 g.
6. Calibration method according to claim 3, characterized in that: and an image acquisition device for photographing or shooting the analog load in the collecting hopper is arranged beside the computer combined scale, and the image acquisition device is connected with a computer.
7. Calibration method according to claim 1, characterized in that: the dummy load was made of SUS316 stainless steel material.
8. The calibration method according to any one of claims 1 to 7, wherein: the calibration method also comprises a static calibration method, wherein the weighing hoppers are statically calibrated at 80% of the common weighing value or the maximum weighing value of the weighing hoppers, and the static calibration process comprises the first step of performing zero correction on each weighing hopper; secondly, selecting a group of analog loads with corresponding number, putting the analog loads into the storage hopper, controlling a material door of the storage hopper to open and close, so that all the analog loads in the storage hopper fall into the corresponding weighing hopper, inputting the total weight of the analog loads after the weighing hopper is stable, and pressing a calibration button to complete the static calibration of the weighing hopper; and thirdly, unloading the simulated load in the weighing hopper, observing whether the weight display of the weighing hopper returns to zero or not, and if not, performing zero correction and static calibration again.
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| CN115165058A (en) * | 2022-07-19 | 2022-10-11 | 广东海川智能机器股份有限公司 | Method and system for eliminating vibration of combined scale |
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