CN104713685A - Vacuum box type leakage inspector and inspection method - Google Patents

Vacuum box type leakage inspector and inspection method Download PDF

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Publication number
CN104713685A
CN104713685A CN201510068383.0A CN201510068383A CN104713685A CN 104713685 A CN104713685 A CN 104713685A CN 201510068383 A CN201510068383 A CN 201510068383A CN 104713685 A CN104713685 A CN 104713685A
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CN
China
Prior art keywords
vacuum
workpiece
vacuum chamber
box type
plugging
Prior art date
Application number
CN201510068383.0A
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Chinese (zh)
Inventor
邹兆龙
Original Assignee
湖南省精一自动化有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 湖南省精一自动化有限公司 filed Critical 湖南省精一自动化有限公司
Priority to CN201510068383.0A priority Critical patent/CN104713685A/en
Publication of CN104713685A publication Critical patent/CN104713685A/en

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Abstract

The invention discloses a vacuum box type leakage inspector. The vacuum box type leakage inspector comprises a rack, a vacuum box for containing a workpiece, a box cover moving mechanism for pressing the workpiece, an air inflow mechanism for inflating the workpiece, a plugging mechanism for plugging a water pipe opening of the workpiece, a vacuum pump connected with the vacuum box and a sealing tester connected with the vacuum pump. The air inflow mechanism is connected with the workpiece, and the workpiece is placed on a fixing die of the vacuum box. The vacuum box, the box cover moving mechanism, the air inflow mechanism and the plugging mechanism are arranged on the rack. By the adoption of the structure, the inspection result is high in accuracy and reliability. By optimizing the mechanism design of a vacuum system, the sealing performance of the vacuum system is improved, and the air leakage rate of the system is reduced; high-temperature-resistant sealing elements are selected as ancillary facilities for improving the equipment vacuum degree; the precision sealing tester is selected and used, so that the inspection result is more reliable; by the adoption of the advanced sensing technology and the precision sealing tester, the system can be automatically controlled.

Description

Vacuum box type leak tester and the method for inspection
Technical field
The present invention relates to field of welding devices, be specifically related to vacuum box type leak tester and the method for inspection.
Background technology
For the quality determining method after inner bag welding, now mainly contain immersion detection method and gas pressurization leakage detection detection method both at home and abroad.Immersion detection method is viewed as basis by operator completely, and judge its leakage rate whether within the scope allowed, so reliability is not high, accuracy of detection is low, and greatly, production efficiency is low, should not be used for automated production for labour intensity.Gas boosting Leak Detection ratio juris is based on gas differential pressure method.Pressure transducer directly reflects what it was experienced, the test pressure slippage caused by the leakage that may exist, and it according to the inspection parameter of user's setting and discrimination standard, can detect the minute leakage of workpiece at short notice.The automaticity of the method is high, and production efficiency is high.But the detection system of gas boosting Leak Detection method is easily by the impact of the environment factors such as temperature, so actual accuracy of detection can be subject to the impact that environment is very large, low precision.
Summary of the invention
The object of the invention is to disclose vacuum box type leak tester and the method for inspection, solve the Welding quality test after for inner bag welding, prior art reliability is low, and accuracy of detection is low, and labour intensity is large, the problem that production efficiency is low.
For achieving the above object, the present invention adopts following technical scheme:
Vacuum box type leak tester, comprise frame, the vacuum chamber for place work piece, the case lid travel mechanism for workpiece pressing, for workpiece is inflated admission gear, for block the workpiece water mouth of pipe plugging mechanism, connect the vacuum pump of vacuum tank and the sealing test instrument being connected vacuum pump, admission gear connects workpiece, and workpiece is placed on the fixed mould of vacuum chamber; Vacuum chamber, case lid travel mechanism, admission gear, plugging mechanism are located in frame.
Further, described case lid travel mechanism is positioned at the top of described vacuum chamber, and described admission gear is positioned at the below of vacuum chamber.
Further, described plugging mechanism is positioned at the side of described case lid travel mechanism.
Further, described admission gear connects workpiece by the air inlet seal being located at described vacuum chamber.
The invention also discloses the method for inspection utilizing vacuum box type leak tester described in above-mentioned any one, comprising: S1, described workpiece are placed on the fixed mould of described vacuum chamber, the downward workpiece pressing of described case lid travel mechanism; After the sealing of S2, workpiece and vacuum chamber puts in place, described plugging mechanism blocks the hose nozzle of workpiece, and the air in vacuum chamber taken away by described vacuum pump simultaneously, forms the vacuum environment of setting; S3, described admission gear upwards top tight workpiece flange port and inflate, incoming inspection parameter and discrimination standard in described sealing test instrument touch-screen, complete examining workpieces.
Compared with prior art, beneficial effect of the present invention:
The present invention adopts above structure and method, uses the principle of vacuum twice leak detection, checkout equipment is made the equipment of the system that can be evacuated, and is equipped with the highly sensitive sealing test instrument that very advanced measuring accuracy is 1Pa.Principle of work of the present invention is: examined workpiece to be placed in vacuum system chamber and to pass into normal pressure, when workpiece has leakage time, vacuum system can produce pressure change, because gas leakage is in vacuum environment (ideal gas), substantially not by the impact of the factors such as temperature.So reflect accurately by sealing test instrument.The present embodiment can obtain the vacuum tightness of more than 60kPa, the leakage rate of the detection workpiece that sealing test instrument can be sensitive, and by the inspection parameter that set in comparison instrument and discrimination standard, obtains a result rapidly.Its accuracy of detection is high, reliability is high, production efficiency is high and can realize manless production.
Assay precision of the present invention is high, reliability is high.By optimizing the mechanism design of vacuum system, improve the sealing of vacuum system, decreasing the leak rate of system; Improve the affiliated facility of equipment vacuum degree, have selected resistant to elevated temperatures seal; Select precision sealing tester, assay is more reliable.The sensing technology of the advanced person adopted and precision sealing tester, system can realize Automated condtrol.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of vacuum box type leak tester embodiment of the present invention;
In figure, 1-frame; 2-vacuum chamber; 3-case lid travel mechanism; 4-admission gear; 5-plugging mechanism; 6-sealing test instrument; 7-vacuum pump.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
The present embodiment vacuum box type leak tester as shown in Figure 1, comprise frame 1, the vacuum chamber 2 for place work piece, the case lid travel mechanism 3 for workpiece pressing, for workpiece is inflated admission gear 4, for block the workpiece water mouth of pipe plugging mechanism 5, connect vacuum tank vacuum pump, connect the sealing test instrument of vacuum pump, admission gear connects workpiece by the air inlet seal being located at vacuum chamber 2, and workpiece is placed on the fixed mould of vacuum chamber.Vacuum chamber 2, case lid travel mechanism 3, admission gear 4, plugging mechanism 5 are located in frame 1, and case lid travel mechanism 3 is positioned at the top of vacuum chamber 2, and admission gear 4 is positioned at the below of vacuum chamber 2, and plugging mechanism 5 is positioned at the side of case lid travel mechanism 3.
The present embodiment physical construction adopts vertical structure (namely detected workpiece is vertical putting).As further illustrating the present embodiment, its workflow is now described: S1, workpiece are placed on after on the fixed mould of vacuum chamber 2 by correct direction (can adopt artificial or robot transport), and case lid travel mechanism 3 is workpiece pressing downwards; S2, workpiece and vacuum chamber 2 is after positiver sealing puts in place, and plugging mechanism 5 blocks the hose nozzle of workpiece, and the air of vacuum chamber 2 li is taken in vacuum pump 7 action simultaneously away, forms the vacuum environment of setting; S3, admission gear 4 upwards top tight workpiece flange port inflating, incoming inspection parameter and discrimination standard (generally leading establish) in sealing test instrument 6 touch-screen, by starting, the result of inspection can show, and whether according to qualified, suggestion voice is reported to the police.Complete a working cycle.
The present embodiment adopts above structure, and assay precision is high, reliability is high.By optimizing the mechanism design of vacuum system, improve the sealing of vacuum system, decreasing the leak rate of system; Improve the affiliated facility of equipment vacuum degree, have selected resistant to elevated temperatures seal; Select precision sealing tester, assay is more reliable.The sensing technology of the advanced person adopted and precision sealing tester, system can realize Automated condtrol.
The present embodiment adopts above structure and method, the principle using vacuum twice leak detection (is not that direct-detection is by the leakage of check system, but the indirect detection leakage of being permeated to vacuum area by check system), checkout equipment is made the equipment of the system that can be evacuated, and be equipped with the highly sensitive sealing test instrument 6 that very advanced measuring accuracy is 1Pa.The principle of work of the present embodiment is: examined workpiece to be placed in vacuum system chamber and to pass into normal pressure, when workpiece has leakage time, vacuum system can produce pressure change, because gas leakage is in vacuum environment (ideal gas), substantially not by the impact of the factors such as temperature.So reflect accurately by sealing test instrument.The present embodiment can obtain the vacuum tightness of more than 60kPa, the leakage rate of the detection workpiece that sealing test instrument can be sensitive, and by the inspection parameter that set in comparison instrument and discrimination standard, obtains a result rapidly.Its accuracy of detection is high, reliability is high, production efficiency is high and can realize manless production.
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.

Claims (5)

1. vacuum box type leak tester, it is characterized in that: comprise frame, the vacuum chamber for place work piece, the case lid travel mechanism for workpiece pressing, for workpiece is inflated admission gear, for block the workpiece water mouth of pipe plugging mechanism, connect the vacuum pump of vacuum tank and the sealing test instrument being connected vacuum pump, admission gear connects workpiece, and workpiece is placed on the fixed mould of vacuum chamber; Vacuum chamber, case lid travel mechanism, admission gear, plugging mechanism are located in frame.
2. vacuum box type leak tester as claimed in claim 1, it is characterized in that: described case lid travel mechanism is positioned at the top of described vacuum chamber, described admission gear is positioned at the below of vacuum chamber.
3. vacuum box type leak tester as claimed in claim 1, is characterized in that: described plugging mechanism is positioned at the side of described case lid travel mechanism.
4. vacuum box type leak tester as claimed in claim 1, is characterized in that: described admission gear connects workpiece by the air inlet seal being located at described vacuum chamber.
5. utilize the method for inspection of vacuum box type leak tester described in claim 1 to 4 any one, comprising: S1, described workpiece are placed on the fixed mould of described vacuum chamber, the downward workpiece pressing of described case lid travel mechanism; After the sealing of S2, workpiece and vacuum chamber puts in place, described plugging mechanism blocks the hose nozzle of workpiece, and the air in vacuum chamber taken away by described vacuum pump simultaneously, forms the vacuum environment of setting; S3, described admission gear upwards top tight workpiece flange port and inflate, incoming inspection parameter and discrimination standard in described sealing test instrument touch-screen, complete examining workpieces.
CN201510068383.0A 2015-02-10 2015-02-10 Vacuum box type leakage inspector and inspection method CN104713685A (en)

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CN104713685A true CN104713685A (en) 2015-06-17

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105034606A (en) * 2015-06-29 2015-11-11 苏州赛腾精密电子股份有限公司 Printer ink cartridge edge leakage detection device
CN106289646A (en) * 2016-08-11 2017-01-04 麦格纳(太仓)汽车科技有限公司 The calibration equipment of air tightness detecting system and corresponding air tightness detecting system method of calibration
CN106441730A (en) * 2016-08-30 2017-02-22 芜湖三花制冷配件有限公司 Leakage detection experiment device for gas-liquid separator, and application method of leakage detection experiment device
CN109211489A (en) * 2018-08-31 2019-01-15 佛山信涵机器人自动化技术有限公司 A kind of filter element of water purifier leak hunting method
CN110954277A (en) * 2019-12-02 2020-04-03 江门龙浩智能装备有限公司 Leak detection device
CN110954280A (en) * 2019-12-02 2020-04-03 江门龙浩智能装备有限公司 Leak detection device

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CN2718550Y (en) * 2004-04-16 2005-08-17 广州新龙浩工业设备有限公司 Vacuum box type gas leakage detecting system
CN1995940A (en) * 2006-01-20 2007-07-11 河北第二机械工业有限公司 Sealing performance detector by using vacuum balancing method and detection method therefor
CN201255681Y (en) * 2008-08-05 2009-06-10 广州新龙浩工业设备有限公司 Air leakage checking system
CN202083533U (en) * 2011-06-17 2011-12-21 楚天科技股份有限公司 Device for detecting tightness of container
WO2012005199A1 (en) * 2010-07-05 2012-01-12 国立大学法人山口大学 Leakage inspection device and leakage inspection method
CN203745156U (en) * 2013-12-05 2014-07-30 珠海格力电器股份有限公司 Workpiece leak detecting device
CN104034495A (en) * 2013-03-06 2014-09-10 楚天科技股份有限公司 Vacuum leak detection method and vacuum leak detection system for containers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2718550Y (en) * 2004-04-16 2005-08-17 广州新龙浩工业设备有限公司 Vacuum box type gas leakage detecting system
CN1995940A (en) * 2006-01-20 2007-07-11 河北第二机械工业有限公司 Sealing performance detector by using vacuum balancing method and detection method therefor
CN201255681Y (en) * 2008-08-05 2009-06-10 广州新龙浩工业设备有限公司 Air leakage checking system
WO2012005199A1 (en) * 2010-07-05 2012-01-12 国立大学法人山口大学 Leakage inspection device and leakage inspection method
CN202083533U (en) * 2011-06-17 2011-12-21 楚天科技股份有限公司 Device for detecting tightness of container
CN104034495A (en) * 2013-03-06 2014-09-10 楚天科技股份有限公司 Vacuum leak detection method and vacuum leak detection system for containers
CN203745156U (en) * 2013-12-05 2014-07-30 珠海格力电器股份有限公司 Workpiece leak detecting device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105034606A (en) * 2015-06-29 2015-11-11 苏州赛腾精密电子股份有限公司 Printer ink cartridge edge leakage detection device
CN106289646A (en) * 2016-08-11 2017-01-04 麦格纳(太仓)汽车科技有限公司 The calibration equipment of air tightness detecting system and corresponding air tightness detecting system method of calibration
CN106289646B (en) * 2016-08-11 2019-01-25 麦格纳(太仓)汽车科技有限公司 The calibration equipment of air tightness detecting system and corresponding air tightness detecting system method of calibration
CN106441730A (en) * 2016-08-30 2017-02-22 芜湖三花制冷配件有限公司 Leakage detection experiment device for gas-liquid separator, and application method of leakage detection experiment device
CN109211489A (en) * 2018-08-31 2019-01-15 佛山信涵机器人自动化技术有限公司 A kind of filter element of water purifier leak hunting method
CN110954277A (en) * 2019-12-02 2020-04-03 江门龙浩智能装备有限公司 Leak detection device
CN110954280A (en) * 2019-12-02 2020-04-03 江门龙浩智能装备有限公司 Leak detection device

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Application publication date: 20150617

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