CN102486397A - Air-floating type automatic checkweigher - Google Patents
Air-floating type automatic checkweigher Download PDFInfo
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- CN102486397A CN102486397A CN2010105877702A CN201010587770A CN102486397A CN 102486397 A CN102486397 A CN 102486397A CN 2010105877702 A CN2010105877702 A CN 2010105877702A CN 201010587770 A CN201010587770 A CN 201010587770A CN 102486397 A CN102486397 A CN 102486397A
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Abstract
The invention relates to an air-floating type automatic checkweigher, and relates to an automatic check weighing technology used for a boxed product, and the air-floating type automatic checkweigher is designed for solving the problems of large vibration noise and low check weighing accuracy existing in the prior art. The air-floating type automatic checkweigher is realized by utilizing an air floating transferring cushion which is uniform, stable and has no electro-magnetic radiation interference, as well as a high-precision pressure-sensitive sensing element and a signal processor as technical assurance. The air-floating type automatic checkweigher is suitable for automatically detecting the weight value of the boxed product within a size range and a certain weight range, such as the weight of a boxed medicine, and can be used for quickly judging whether the weight is qualified or not.
Description
Technical field
The present invention relates to a kind of technology of box-packed product being carried out automatic check weighing.
Background technology
At present, Automatic check weiger is applied in each commercial production field just more and more, particularly on the medicine automatic packaging production line, can be used for real-time weight test, the sorting of packaging product in course of conveying, thereby realizes the line Quality Control of product.Common Automatic check weiger need install belt conveyor additional on weighing unit, the power of this belt conveyor is provided by motor, realizes the online weight test and the sorting function of product through the weight of the packaging product of belt conveyor top through real-time detection.
CN2444216Y has disclosed a kind of Automatic check weiger of using above-mentioned principle to realize.Because be arranged at when the belt conveyor of weighing unit top is worked and self can produce certain vibration and electromagnetic interference, this will directly have influence on the check weighing precision of Automatic check weiger.Therefore this scheme has higher requirement to the precision of the processing of assemblies such as belt conveyor and power roller thereof, assembling; Simultaneously self vibration and the electromagnetic interference of its drive motor in when work also there is strict requirement, and then increased the manufacture difficulty and the cost of this belt conveyor.
Summary of the invention
The objective of the invention is deficiency, provide a kind of and self disturb the air-flotation type Automatic check weiger little, that the check weighing precision is high at present common Automatic check weiger existence.
The objective of the invention is to realize by following technical approach:
It comprises preceding travelling belt, back travelling belt, weighing unit and is installed in the air floating platform on the weighing unit; The weighing unit set inside has signal processor and the signal transmitting element that is arranged on the signal processor top; Air floating platform is between preceding travelling belt and back travelling belt; Wherein, described air floating platform comprises gas-floating chamber and the air-flow spray orifice that is arranged on gas-floating chamber top, and it is characterized in that: described gas-floating chamber bottom is provided with the pressure-responsive element.
After the pressurized air of pressure stability feeds gas-floating chamber, the air-flow spray orifice through gas-floating chamber top with pressurized air evenly, upwards ejection stably, thereby above air floating platform, form the air supporting transport pad.When box-packed product is above the air supporting transport pad passes through air floating platform; The downward pressure that produces because of its weight will cause certain air pressure change in gas-floating chamber inside; This air pressure change is after the pressure-responsive element perception of gas-floating chamber bottom and being transformed to pressure signal, and the signal processor conversion process that sends the below to through the signal transmitting element again is actual weight numerical value.
The present invention and prior art characteristics relatively:
1, owing to be provided with high-precision pressure-responsive element in the gas-floating chamber bottom; Just can perceive the air pressure change signal that box-packed product is little at the vibration noise that produces through time above the air floating platform and self electromagnetic-radiation-free disturbs through it; This pressure-responsive element can be a pressure signal with this signal transformation simultaneously; Be convenient to the inner signal processor conversion process of weighing unit, this has just created advantageous conditions for the check weighing precision that improves Automatic check weiger.
2,, thereby its compactness simple for structure, be easy to processing and manufacturing and cost is low because the air floating platform agent structure need not assemblies such as belt conveyor and motor.
Description of drawings
Illustrated in the specific implementation one practical embodiment of the present invention.
In the accompanying drawing: K: preceding travelling belt; P: back travelling belt; W: packing box; 1: weighing unit; 2: signal processor; 3: the signal transmitting element; 4: the pressure-responsive element; 5: air floating platform; 6: the air supporting transport pad; 7: the air-flow spray orifice; 8: gas-floating chamber.
Embodiment
Below in conjunction with the embodiment in the accompanying drawing the present invention is done further description:
Packing box W is an example with the smooth square medicine packing box commonly used in bottom, and its physical dimension (length * wide * height) is generally less than 140mm * 100mm * 40mm, and weight is generally less than 300 grams.For ease of realizing the dynamic weighing to packing box W, present embodiment is set to 280mm * 120mm * 60mm with air floating platform 5 physical dimension (length * wide * height).Air floating platform 5 is placed between preceding travelling belt K and the back travelling belt P; Air floating platform 5 is installed in weighing unit 1 top; It is that 1mm and mutual spacing are the air-flow spray orifice 7 of 5mm that air floating platform 5 tops are uniformly distributed with 1265 diameters; Purpose is to make pressurized air through upwards ejection of air-flow spray orifice 7, thereby above air floating platform 5, forms evenly, air supporting transport pad 6 that stable, low vibration and self electromagnetic-radiation-free disturb, simplified simultaneously transport structure, reduced its manufacture difficulty and cost.
Because the compressed-air actuated pressure limit that present embodiment uses in gas-floating chamber 8 is arranged between 0.1 to 0.3Mpa; So the pressure-responsive element 4 that gas-floating chamber 8 bottoms are provided with can be selected elasticity voltage dependent resistor (VDR) film for use; Be convenient to the air pressure change signal is converted into electric pressure signal, help improving the detection sensitivity that slight pressure is changed.
Groundwork flow process of the present invention:
During use, the pressurized air of pressure stability feeds gas-floating chamber 8 earlier, through air-flow spray orifice 7 ejections on gas-floating chamber 8 tops, above air floating platform 5, forms air supporting transport pad 6 again.When pharmaceutical packing box W being housed on the production line when preceding travelling belt K is delivered to air floating platform 5 tops, under the election effect of air supporting transport pad 6 updrafts, can make packing box W slip over air floating platform 5 reposefully according to original motional inertia.At this moment; The air pressure change that the downward pressure that produces because of the weight of packing box W self causes in gas-floating chamber 8 inside just can and be transformed to electric pressure signal through pressure-responsive element 4 (elasticity voltage dependent resistor (VDR) film) perception, and this electric pressure signal sends signal processor 2 conversion process to through signal transmitting element 3 again and is actual weight numerical value.Because this electric pressure signal ground unrest disturbs low and degree of distortion is little, therefore help signal processor 2 and improve the precision that it detects packing box W weight numerical value, and whether condition has been created in qualified judgement for it makes packing box W weight rapidly and accurately.
Claims (1)
1. air-flotation type Automatic check weiger; Comprise preceding travelling belt (K), back travelling belt (P), weighing unit (1) and be installed in the air floating platform (5) on the weighing unit (1); Weighing unit (1) set inside has signal processor (2) and is arranged on the signal transmitting element (3) of signal processor (2) top; Air floating platform (5) is positioned between preceding travelling belt (K) and the back travelling belt (P); Wherein, described air floating platform (5) comprises gas-floating chamber (8) and is arranged on the air-flow spray orifice (7) on gas-floating chamber (8) top, it is characterized in that: described gas-floating chamber (8) bottom is provided with pressure-responsive element (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010587770 CN102486397B (en) | 2010-12-06 | 2010-12-06 | Air-floating type automatic checkweigher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010587770 CN102486397B (en) | 2010-12-06 | 2010-12-06 | Air-floating type automatic checkweigher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102486397A true CN102486397A (en) | 2012-06-06 |
| CN102486397B CN102486397B (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010587770 Expired - Fee Related CN102486397B (en) | 2010-12-06 | 2010-12-06 | Air-floating type automatic checkweigher |
Country Status (1)
| Country | Link |
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| CN (1) | CN102486397B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267200A (en) * | 2018-02-09 | 2018-07-10 | 双峰格雷斯海姆医药包装（镇江）有限公司 | A kind of medicinal glass bottle precise measuring weight device and method |
| CN110333120A (en) * | 2019-07-24 | 2019-10-15 | 合肥工业大学 | A kind of machine components cleannes rapid detection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2049961A (en) * | 1979-04-12 | 1980-12-31 | Fairhurst H A | Apparatus for continuous weighing |
| CN1245892A (en) * | 1999-05-14 | 2000-03-01 | 太原化学工业集团有限公司化肥厂 | Air cushion belt balance weight monitoring device |
| CN2444216Y (en) * | 2000-09-28 | 2001-08-22 | 张继安 | Automatic checking weight weigh |
| CN201867231U (en) * | 2010-12-06 | 2011-06-15 | 中国计量学院 | Air floating type automatic weighing scale |
-
2010
- 2010-12-06 CN CN 201010587770 patent/CN102486397B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2049961A (en) * | 1979-04-12 | 1980-12-31 | Fairhurst H A | Apparatus for continuous weighing |
| CN1245892A (en) * | 1999-05-14 | 2000-03-01 | 太原化学工业集团有限公司化肥厂 | Air cushion belt balance weight monitoring device |
| CN2444216Y (en) * | 2000-09-28 | 2001-08-22 | 张继安 | Automatic checking weight weigh |
| CN201867231U (en) * | 2010-12-06 | 2011-06-15 | 中国计量学院 | Air floating type automatic weighing scale |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267200A (en) * | 2018-02-09 | 2018-07-10 | 双峰格雷斯海姆医药包装（镇江）有限公司 | A kind of medicinal glass bottle precise measuring weight device and method |
| CN108267200B (en) * | 2018-02-09 | 2024-05-07 | 双峰格雷斯海姆医药包装（镇江）有限公司 | Accurate weighing device and method for medicinal glass bottle |
| CN110333120A (en) * | 2019-07-24 | 2019-10-15 | 合肥工业大学 | A kind of machine components cleannes rapid detection method and device |
| CN110333120B (en) * | 2019-07-24 | 2022-01-25 | 合肥工业大学 | Method and device for rapidly detecting cleanliness of mechanical part |
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| Publication number | Publication date |
|---|---|
| CN102486397B (en) | 2013-10-30 |
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