CN103658056A - Automatic miss detection method for an electric meter screw - Google Patents
Automatic miss detection method for an electric meter screw Download PDFInfo
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- CN103658056A CN103658056A CN201310725884.2A CN201310725884A CN103658056A CN 103658056 A CN103658056 A CN 103658056A CN 201310725884 A CN201310725884 A CN 201310725884A CN 103658056 A CN103658056 A CN 103658056A
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Abstract
The invention belongs to the technical field of automatic detection processes, and relates to an automatic miss detection method for an electric meter screw. Firstly, an automatic miss detection device is mounted, a photoelectric switch senses an electric meter to be detected and transmits signals to an electronic conversion element, so that a pneumatic component is controlled to drive a sensing board and a partition board to protrude to detect whether a screw is missed to mount; if two sensors detect the screw, the signals are transmitted to the electronic conversion component to control the baffle to retract to allow the electric meter; if the screw is not detected, and the sensors do not act, so that the baffle stops the electric meter without the screw to enable an operate to recovery. The detection method is simple and convenient to operate, reasonable in design, high in degree of automation, perfect, high in efficiency and accuracy and speed, friendly in detection environment, and simple in device structure.
Description
Technical field:
The invention belongs to automatic characterization processes technical field, relate to a kind of ammeter screw automatic leak detection method, can to the ammeter after having assembled in production line, whether neglected loading screw carry out automatic inspection, after putting goods on the market, can use safely by ammeter guaranteeing.
Background technology:
Ammeter is for measuring the instrument of electric energy, it is the abbreviation of electric energy meter or kilowatt-hour meter, past is also called energy meter and kilowatt-hour table, specifically refer to measure the instrument of various electrical quantities, during reality people is produced, is lived, ammeter is seen everywhere, and is mainly used in Utilities Electric Co. and carries out electricity charge calculating and charge according to the shown number of degrees of ammeter.As everyone knows, ammeter is all generally to concentrate to hang in the ammeter box of residential quarters or industrial premises, in order to facilitate using and overhauling of ammeter, the watchcase up and down of finished product ammeter is to be fixedly connected with by a plurality of screws conventionally, to facilitate ammeter staff's field-strip when breaking down, because screw volume is little, quality is light, the ammeter assembling in production line usually has the phenomenon of the one or more screws of neglected loading, cause ammeter assemble insecure or can not normally use, for consumers in general bring potential safety hazard, so ammeter will carry out repeated detection before dispatching from the factory, wherein important detection is exactly to check whether neglected loading screw of ammeter, in prior art ammeter whether neglected loading the problem of screw mainly by the method for artificial visual, detect, its detection accuracy is lower, cause often having the ammeter of neglected loading to flow in market, for users have brought very big inconvenience, yet there are no and use mechanical device automatically to carry out the report of ammeter screw detecting, more there are no the prior art about ammeter screw automatic checking device.Therefore, seeking design provides a kind of ammeter screw automatic leak detection method to replace manpower to detect, and realizes automation continuous productive process, enhances productivity with Detection accuracy, reduces labour intensity, has good economic benefit and practical value.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, seek design a kind of ammeter screw automatic leak detection method is provided, can carry out the automatic inspection of screw to ammeter to be dispatched from the factory after assembling in production line, on streamline, make it not flow into next production link on the ammeter gear of neglected loading screw.
The concrete technology step of the ammeter screw automatic leak detection method the present invention relates to achieve these goals, is:
(1) automatic leak-checking device after assembling is completed docks with ammeter production and assembly streamline, front end by optoelectronic switch fixed placement at conveyer belt, pneumatic element fixed placement is in the rear end of conveyer belt, and adjust the position that the first tablet and the second tablet stretch out and align with the left margin of conveyer belt, the ammeter to be detected that baffle plate is blocked flow down on conveyer belt;
(2) when ammeter to be detected is flowed through optoelectronic switch, optoelectronic switch conducting is also transmitted the signal of telecommunication to electric conversion element by the 3rd relay, electric conversion element carries out the gas of gas piping input to pass to pneumatic element after gas circuit conversion, pneumatic element action promotes the first tablet and baffled the second tablet stretches out, and when baffle plate blocks ammeter to be detected, the first inductor and the second inductor are near the position of screw is installed on ammeter to be detected;
(3) while screw being installed on ammeter to be detected being detected, the first inductor and the second inductor difference output voltage signal are to the input of the first transistor and transistor seconds, the first transistor and transistor seconds conducting output voltage signal start the first relay and the second relay, the inside normally-closed contact of the first relay and the second relay disconnects, control electric conversion element carries out gas circuit conversion and control pneumatic element and drives the first tablet and the second tablet to retract, and ammeter to be detected flow into next production link by conveyer belt;
(4) when ammeter to be detected being detected and screw not being installed, the first inductor and the second inductor not output voltage to the input of the first transistor and transistor seconds, the first transistor and transistor seconds do not start the first relay and the second relay, electric conversion element keeps original state not carry out gas circuit conversion, pneumatic element does not drive baffle plate to retract, the ammeter of neglected loading screw is blocked in treats on conveyer belt that staff or automatic collecting device put away, avoids the ammeter of neglected loading screw to come into the market.
The apparatus main body structure that the present invention realizes ammeter screw automatic leak detection comprises control cabinet, power supply, electric conversion element, switch, the first relay, the second relay, the 3rd relay, the first transistor, transistor seconds, pneumatic element, the first tablet, the second tablet, the first inductor, the second inductor, baffle plate, conveyer belt, optoelectronic switch and gas piping, in the control cabinet of hollow type box body structure, integrated form is equipped with power supply, electric conversion element, switch, the first relay, the second relay, the 3rd relay, the first transistor and transistor seconds, be arranged on electric conversion element and the first relay on power supply, the second relay and the 3rd relay are electrically connected to, the input of the 3rd relay be fixedly installed on the optoelectronic switch electric connection on conveyer belt, switch is embedded on the antetheca of control cabinet and controls the power supply of power supply, the first transistor is electrically connected to according to electrical principles structure with the first relay, and to control startup or the disconnection of the first relay, transistor seconds is electrically connected to according to electrical principles structure with the second relay, to control startup or the disconnection of the second relay, the input of electric conversion element docks with gas piping, and the output of electric conversion element and pneumatic element electricity information communication are to control stretching out or retracting of pneumatic element, pneumatic element is fixedly connected with the second tablet with the first tablet, second tablet the right is along being fixedly shaped with baffle plate, embedded first inductor that is shaped with in upper left side of the first tablet, the first inductor is electrically connected to the first transistor in control cabinet, embedded second inductor that is shaped with in the second tablet lower right, the second inductor is electrically connected to the transistor seconds in control cabinet.
Compared with prior art, the inductive transfer signal by optoelectronic switch, to electric conversion element, drives tablet and baffle plate to stretch out whether neglected loading screw detects to ammeter thereby control pneumatic element in the present invention; If two inductors detect screw transmission of signal to electric conversion element, control baffle plate retraction clearance ammeter, if the screw ammeter that makes baffle plate block neglected loading screw of being failure to actuate detected, do not treat that staff regains; When saving manpower, effectively avoid the ammeter of neglected loading screw to flow into normal assembling line, improved detection efficiency, reduced labour intensity; Its method is easy and simple to handle, reasonable in design, and automatization level is high, and characterization processes is ripe, and efficiency is high, the degree of accuracy good, speed is fast, and testing environment is friendly, and apparatus structure is simple.
Accompanying drawing explanation:
Fig. 1 is the leakage detection apparatus agent structure principle schematic the present invention relates to.
Fig. 2 is the hardware configuration structure schematic block diagram of circuit control section of the present invention.
The specific embodiment:
Below in conjunction with accompanying drawing and by embodiment, the present invention is made to further description.
Embodiment:
The concrete technology step that the present embodiment is realized ammeter screw automatic leak detection is:
(1) automatic leak-checking device after assembling is completed docks with ammeter production and assembly streamline, front end by optoelectronic switch 17 fixed placement at conveyer belt 16, pneumatic element 10 fixed placement are in the rear end of conveyer belt 16, and adjust the position that the first tablet 11 and the second tablet 12 stretch out and align with the left margin of conveyer belt 16, make baffle plate 15 block the ammeter to be detected flowing down on conveyer belt 16;
(2) when ammeter to be detected is flowed through optoelectronic switch 17, optoelectronic switch 17 conductings are also transmitted the signal of telecommunication to electric conversion element 3 by the 3rd relay 7, electric conversion element 3 carries out the gas of gas piping 18 inputs to pass to pneumatic element 10 after gas circuit conversion, pneumatic element 10 action promotes the first tablets 11 and stretches out with the second tablet 12 of baffle plate 15, and when baffle plate 15 blocks ammeter to be detected, the first inductor 13 and the second inductor 14 are near the position of screw is installed on ammeter to be detected;
(3) while screw being installed on ammeter to be detected being detected, the first inductor 13 and the second inductor 14 difference output voltage signals are to the input of the first transistor 8 and transistor seconds 9, the first transistor 8 and transistor seconds 9 conductings output voltage signal start the first relay 5 and the second relay 6, the inside normally-closed contact of the first relay 5 and the second relay 6 disconnects, control electric conversion element 3 and carry out gas circuit conversion and control pneumatic element 10 drive the first tablets 11 and the second tablet 12 retractions, ammeter to be detected flow into next production link by conveyer belt 16,
(4) when ammeter to be detected being detected and screw not being installed, the first inductor 13 and the second inductor 14 not output voltage to the input of the first transistor 8 and transistor seconds 9, the first transistor 8 and transistor seconds 9 do not start the first relay 5 and the second relay 6, electric conversion element 3 keeps original state not carry out gas circuit conversion, pneumatic element 10 does not drive baffle plate 15 to retract, the ammeter of neglected loading screw is blocked in treats on conveyer belt 16 that staff or automatic collecting device put away, avoids the ammeter of neglected loading screw to come into the market.
The apparatus main body structure that the present embodiment is realized ammeter screw automatic leak detection method comprises control cabinet 1, power supply 2, electric conversion element 3, switch 4, the first relay 5, the second relay 6, the 3rd relay 7, the first transistor 8, transistor seconds 9, pneumatic element 10, the first tablet 11, the second tablet 12, the first inductor 13, the second inductor 14, baffle plate 15, conveyer belt 16, optoelectronic switch 17 and gas piping 18, in the control cabinet 1 of hollow type box body structure, integrated form is equipped with power supply 2, electric conversion element 3, switch 4, the first relay 5, the second relay 6, the 3rd relay 7, the first transistor 8 and transistor seconds 9, be arranged on electric conversion element 3 and the first relay on power supply 2, the second relay 6 and the 3rd relay 7 are electrically connected to, the input of the 3rd relay 7 be fixedly installed on optoelectronic switch 17 electric connections on conveyer belt 16, switch 4 is embedded on the antetheca of control cabinet 1 and controls the power supply of power supply 2, the first transistor 8 is electrically connected to according to electrical principles structure with the first relay 5, and to control startup or the disconnection of the first relay 5, transistor seconds 9 is electrically connected to according to electrical principles structure with the second relay 6, to control startup or the disconnection of the second relay 6, the input of electric conversion element 3 docks with gas piping 18, and the output of electric conversion element 3 and the electric information communication of pneumatic element 10 are to control stretching out or retracting of pneumatic element 10, pneumatic element 10 is fixedly connected with the second tablet 12 with the first tablet 11, second tablet 12 the right are along being fixedly shaped with baffle plate 15, embedded first inductor 13 that is shaped with in upper left side of the first tablet 11, the first inductor 13 is electrically connected to the first transistor 8 in control cabinet 10, embedded second inductor 14, the second inductors 14 that are shaped with in the second tablet 12 lower rights are electrically connected to the transistor seconds 9 in control cabinet 10.
Control cabinet 1, the first tablet 11, the second tablet 12 and baffle plate 15 that the present embodiment relates to select plastic plate or acrylic board to make; Power supply 2 is direct current 24V Switching Power Supply, and electric conversion element 3 is selected common magnetic valve, and the shutoff valve of magnetic valve can be controlled the air-flow size of gas piping 18, to regulate pneumatic element to drive the amount of force of the first tablet 11 and the second tablet 12; The first relay 5, the second relay 6 and the 3rd relay 7 are selected the auxiliary reclay of direct current 24V, pneumatic element 10 is two bar cylinders, the cylinder rod of two bar cylinders is fixedly connected with the second tablet 12 with the first tablet 11, to drive stretching out or retracting of the first tablet 11 and the second tablet 12; The position on the first tablet 11 and the second tablet 12 and the ammeter to be measured installation site of tightening up a screw is corresponding respectively for the first inductor 13 and the second inductor 14; Optoelectronic switch 17 is photoelectric sensor, and its fixed placement is at the front end of conveyer belt 16, can sense detected ammeter through the out-of-date transmission signal of telecommunication to the 3rd relay 7; Pneumatic element 10 is fixedly installed on the rear end of conveyer belt 16, and it promotes the position that the first tablet 11 and the second tablet 12 stretch out and aligns with the left margin of conveyer belt 16, makes baffle plate 15 can block the ammeter to be detected flowing down on conveyer belt 16.
Claims (3)
1. an ammeter screw automatic leak detection method, is characterized in that concrete technology step is:
(1) automatic leak-checking device after assembling is completed docks with ammeter production and assembly streamline, front end by optoelectronic switch fixed placement at conveyer belt, pneumatic element fixed placement is in the rear end of conveyer belt, and adjust the position that the first tablet and the second tablet stretch out and align with the left margin of conveyer belt, the ammeter to be detected that baffle plate is blocked flow down on conveyer belt;
(2) when ammeter to be detected is flowed through optoelectronic switch, optoelectronic switch conducting is also transmitted the signal of telecommunication to electric conversion element by the 3rd relay, electric conversion element carries out the gas of gas piping input to pass to pneumatic element after gas circuit conversion, pneumatic element action promotes the first tablet and baffled the second tablet stretches out, and when baffle plate blocks ammeter to be detected, the first inductor and the second inductor are near the position of screw is installed on ammeter to be detected;
(3) while screw being installed on ammeter to be detected being detected, the first inductor and the second inductor difference output voltage signal are to the input of the first transistor and transistor seconds, the first transistor and transistor seconds conducting output voltage signal start the first relay and the second relay, the inside normally-closed contact of the first relay and the second relay disconnects, control electric conversion element carries out gas circuit conversion and control pneumatic element and drives the first tablet and the second tablet to retract, and ammeter to be detected flow into next production link by conveyer belt;
(4) when ammeter to be detected being detected and screw not being installed, the first inductor and the second inductor not output voltage to the input of the first transistor and transistor seconds, the first transistor and transistor seconds do not start the first relay and the second relay, electric conversion element keeps original state not carry out gas circuit conversion, pneumatic element does not drive baffle plate to retract, the ammeter of neglected loading screw is blocked in treats on conveyer belt that staff or automatic collecting device put away, avoids the ammeter of neglected loading screw to come into the market.
2. ammeter screw automatic leak detection method according to claim 1, it is characterized in that the apparatus main body structure that realizes ammeter screw automatic leak detection comprises control cabinet, power supply, electric conversion element, switch, the first relay, the second relay, the 3rd relay, the first transistor, transistor seconds, pneumatic element, the first tablet, the second tablet, the first inductor, the second inductor, baffle plate, conveyer belt, optoelectronic switch and gas piping, in the control cabinet of hollow type box body structure, integrated form is equipped with power supply, electric conversion element, switch, the first relay, the second relay, the 3rd relay, the first transistor and transistor seconds, be arranged on electric conversion element and the first relay on power supply, the second relay and the 3rd relay are electrically connected to, the input of the 3rd relay be fixedly installed on the optoelectronic switch electric connection on conveyer belt, switch is embedded on the antetheca of control cabinet and controls the power supply of power supply, the first transistor is electrically connected to the first relay, and to control startup or the disconnection of the first relay, transistor seconds is electrically connected to the second relay, to control startup or the disconnection of the second relay, the input of electric conversion element docks with gas piping, and the output of electric conversion element and pneumatic element electricity information communication are to control stretching out or retracting of pneumatic element, pneumatic element is fixedly connected with the second tablet with the first tablet, second tablet the right is along being fixedly shaped with baffle plate, embedded first inductor that is shaped with in upper left side of the first tablet, the first inductor is electrically connected to the first transistor in control cabinet, embedded second inductor that is shaped with in the second tablet lower right, the second inductor is electrically connected to the transistor seconds in control cabinet.
3. ammeter screw automatic leak detection method according to claim 2, is characterized in that power supply is direct current 24V Switching Power Supply, and electric conversion element is magnetic valve, and the shutoff valve of magnetic valve can be controlled the air-flow size of gas piping; The first relay, the second relay and the 3rd relay are the auxiliary reclay of direct current 24V, pneumatic element is two bar cylinders, the cylinder rod of two bar cylinders is fixedly connected with the second tablet with the first tablet, to drive stretching out or retracting of the first tablet and the second tablet; The position on the first tablet and the second tablet and the ammeter to be measured installation site of tightening up a screw is corresponding respectively for the first inductor and the second inductor; Optoelectronic switch is photoelectric sensor, and its fixed placement is at the front end of conveyer belt, can sense detected ammeter through the out-of-date transmission signal of telecommunication to the 3rd relay; Pneumatic element is fixedly installed on the rear end of conveyer belt, and it promotes the position that the first tablet and the second tablet stretch out and aligns with the left margin of conveyer belt, the ammeter to be detected that baffle plate can be blocked flow down on conveyer belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725884.2A CN103658056B (en) | 2013-12-25 | 2013-12-25 | Automatic miss detection method for an electric meter screw |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310725884.2A CN103658056B (en) | 2013-12-25 | 2013-12-25 | Automatic miss detection method for an electric meter screw |
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| CN103658056A true CN103658056A (en) | 2014-03-26 |
| CN103658056B CN103658056B (en) | 2015-05-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289999A (en) * | 2015-11-30 | 2016-02-03 | 中电装备山东电子有限公司 | Lead seal detection device and method for smart electric meter |
| CN106378311A (en) * | 2016-12-10 | 2017-02-08 | 中云智慧（北京）科技有限公司 | Article sorting device |
| CN107744964A (en) * | 2017-11-16 | 2018-03-02 | 铭板精密科技(中山)有限公司 | A kind of new detection means that screws |
| CN109374226A (en) * | 2018-10-26 | 2019-02-22 | 怀化智信能源科技有限公司 | A kind of ammeter production shell quality detection device |
| CN112517425A (en) * | 2020-10-10 | 2021-03-19 | 安徽佳辉电气有限公司 | Circuit breaker rivet neglected loading, misloading check out test set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146729A1 (en) * | 1983-11-07 | 1985-07-03 | Hans-Heinrich Willberg | Device for transferring components, in particular integrated chips, from an input tray to an output tray |
| JP2005156294A (en) * | 2003-11-25 | 2005-06-16 | Toko Electric Corp | Inspection device |
| CN101503125A (en) * | 2008-07-30 | 2009-08-12 | 珠海市运泰利自动化设备有限公司 | Automatic test packing machine for electronic component |
| CN201909817U (en) * | 2010-04-15 | 2011-07-27 | 姚伟庆 | Open-type line loss detector |
| CN202092969U (en) * | 2010-11-23 | 2011-12-28 | 上海坤大信息技术有限公司 | On-line cigarette bar appearance quality detecting system |
| CN103411979A (en) * | 2013-09-03 | 2013-11-27 | 青岛艾孚科技有限公司 | Automatic detection device for electric meter certificate |
-
2013
- 2013-12-25 CN CN201310725884.2A patent/CN103658056B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146729A1 (en) * | 1983-11-07 | 1985-07-03 | Hans-Heinrich Willberg | Device for transferring components, in particular integrated chips, from an input tray to an output tray |
| JP2005156294A (en) * | 2003-11-25 | 2005-06-16 | Toko Electric Corp | Inspection device |
| CN101503125A (en) * | 2008-07-30 | 2009-08-12 | 珠海市运泰利自动化设备有限公司 | Automatic test packing machine for electronic component |
| CN201909817U (en) * | 2010-04-15 | 2011-07-27 | 姚伟庆 | Open-type line loss detector |
| CN202092969U (en) * | 2010-11-23 | 2011-12-28 | 上海坤大信息技术有限公司 | On-line cigarette bar appearance quality detecting system |
| CN103411979A (en) * | 2013-09-03 | 2013-11-27 | 青岛艾孚科技有限公司 | Automatic detection device for electric meter certificate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289999A (en) * | 2015-11-30 | 2016-02-03 | 中电装备山东电子有限公司 | Lead seal detection device and method for smart electric meter |
| CN106378311A (en) * | 2016-12-10 | 2017-02-08 | 中云智慧（北京）科技有限公司 | Article sorting device |
| CN107744964A (en) * | 2017-11-16 | 2018-03-02 | 铭板精密科技(中山)有限公司 | A kind of new detection means that screws |
| CN107744964B (en) * | 2017-11-16 | 2023-12-15 | 铭板精密科技(中山)有限公司 | Screw driving detection device |
| CN109374226A (en) * | 2018-10-26 | 2019-02-22 | 怀化智信能源科技有限公司 | A kind of ammeter production shell quality detection device |
| CN112517425A (en) * | 2020-10-10 | 2021-03-19 | 安徽佳辉电气有限公司 | Circuit breaker rivet neglected loading, misloading check out test set |
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| CN103658056B (en) | 2015-05-13 |
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Address after: 266061 Shandong Province, Qingdao city Laoshan District Songling Road No. 169 room 413 Patentee after: QINGDAO ITECHENE TECHNOLOGIES CO., LTD. Address before: 266061 Shandong Province, Qingdao city Laoshan District Songling Road No. 169 room 413 Patentee before: Qingdao Qiancheng Electronics Co., Ltd. |