CN103604571A - Mark pen sealing performance detection equipment - Google Patents

Mark pen sealing performance detection equipment Download PDF

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Publication number
CN103604571A
CN103604571A CN201310500922.4A CN201310500922A CN103604571A CN 103604571 A CN103604571 A CN 103604571A CN 201310500922 A CN201310500922 A CN 201310500922A CN 103604571 A CN103604571 A CN 103604571A
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China
Prior art keywords
chamber
valve
pressed
control
detection
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CN201310500922.4A
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Chinese (zh)
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CN103604571B (en
Inventor
王勇
吕红英
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HANGZHOU NUOHANG SCIENCE & TECHNOLOGY CO., LTD.
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HANGZHOU NUOHANG SCIENCE & TECHNOLOGY Co Ltd
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Publication of CN103604571A publication Critical patent/CN103604571A/en
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Abstract

The invention discloses a piece of mark pen sealing performance detection equipment comprising a mark pen placing device and a leak detector. A mark pen is placed in the mark pen placing device to form a detected sealed cavity. The leak detector comprises a case, a gas path system and a control system, wherein the gas path system and the control system are installed inside the case. The gas path system comprises a filtering and pressure regulating valve, a gas inlet electromagnetic valve, a gas exhaust electromagnetic valve, a controller assembly, a pressure reduction electromagnetic valve, a pressure reduction pneumatic control valve, a pressure sensor and a differential pressure sensor. The control system comprises a programmable controller, a switching power supply, a relay and a touch screen. A user can observe changes of time, pressure, differential pressure value, leakage and other parameters in the detection process and final detection results on the touch screen and can set detection parameters and view historical record of detection. The mark pen sealing performance detection equipment has the following advantages: the overall sealing performance of the mark pen can be objectively detected; complete detection is easily realized and the product quality is ensured; and detection results truly reflect the sealing performance of the mark pen.

Description

A kind of marking pen leak-testing apparatus
Technical field
Patent of the present invention relates to a kind of pneumatic process device for detecting sealability, and what be specifically related to is a kind of leak-testing apparatus of marking pen.
Background technology
In the pen core of marking pen, perfusion has volatile color inks, from marking pen, dispatching from the factory that user uses conventionally will be through longer a period of time, if poor sealing between the cap for brush or bonnet and penholder, color inks in pen core can vapor away, cause marking pen to use, so the performing leak test of marking pen is extremely important.Traditional detection method is that marking pen is inspected by random samples, adopts water inspection method to detect respectively the sealing between the cap for brush and penholder and between bonnet and penholder.First remove the cap for brush and the nib of marking pen, from nib, be filled with certain pressure gas, put into tank and observe the sealing that whether has bubble to come up between detection bonnet and penholder, then load onto the cap for brush and nib, remove bonnet, from bonnet, be filled with certain pressure gas, put into tank and observe the sealing that whether has bubble to come up between the detection cap for brush and penholder, after having detected, the original seal sexual state of detected sample is destroyed, and can not recover.
Adopt traditional marking pen method for conducting leak test, exist testing result acceptor viewing to ring large; Can only inspect by random samples, can not realize full inspection; Testing result can not reflect the shortcomings such as true sealing of marking pen.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of marking pen leak-testing apparatus is provided.
A kind of marking pen leak-testing apparatus of the present invention, comprises marking pen apparatus for placing and leak locator.
Described marking pen apparatus for placing comprise be pressed into cylinder, be pressed into air cylinder support, upper cavity, seal, lower chamber and working plate.The described cylinder that is pressed into is fixedly connected on working plate by being pressed into air cylinder support, the movable end that is pressed into cylinder is connected with upper cavity, lower chamber is fixed on working plate, upper cavity and lower chamber coaxially arrange, seal is embedded in the seal channel of lower chamber, when being pressed into cylinder, drive upper cavity to be pressed on lower chamber, between upper cavity and lower chamber, by seal, form complete tested step-down annular seal space.During test, marking pen is placed in sealing chamber.
Described leak locator comprises casing, air-channel system and control system, and air-channel system and control system are arranged in casing.Air-channel system comprises source of the gas, filtering pressure reducing valve, reduction valve, two-position two-way solenoid valve, pressure transducer, two-position three way magnetic valve, controller, exhaust two-position two-way solenoid valve, tested step-down annular seal space, the first two-position, tested annular seal space, differential pressure pick-up, balanced seal chamber, the second two-position and volume adjustable device;
Source of the gas, after filtering pressure reducing valve, is divided into two-way ,Yi road and connects two-position three way magnetic valve, control the step-down action of the first two-position and the second two-position, another road, after reduction valve regulates, through air inlet two-position two-way solenoid valve, is connected with controller; Bonding pressure sensor and exhaust two-position two-way solenoid valve between two-position two-way solenoid valve and controller, controller outlet is divided into two-way, one tunnel connects tested annular seal space and the first two-position, after the first two-position, connect tested step-down annular seal space, another road connects balanced seal chamber and the second two-position, after the second two-position, connect volume adjustable device, between controller outlet two-way, differential pressure pick-up is housed.
Control system comprises Programmable Logic Controller, relay, touch-screen, described touch-screen is connected with programmable logic device (PLD) signal, programmable logic device (PLD) output control relay, by Control electromagnetic valve coil, gas circuit components and parts are moved according to program setting, and the value of pressure transducer and differential pressure pick-up reads calculation process in programmable logic device (PLD).
Marking pen sealing propertytest process is divided into inflation, balance, detection for the first time, step-down, detection, exhaust for the second time.In aeration phase, exhaust solenoid valve is closed, and controller assemblies is opened, step-down closed electromagnetic valve, air inlet electromagnetic valve is opened tested product annular seal space and counter balance pocket is inflated simultaneously, and counter balance pocket can be one section of pipeline or the closed container similar to test product annular seal space volume; Equilibrium stage is closed air inlet electromagnetic valve, waits for that annular seal space and counter balance pocket gaseous tension are stable; Detection-phase is initial for the first time, from pressure transducer, whether detect now pressure lower than pressure set points, to judge to have large leakage, otherwise controller assemblies action, tested chamber and counter balance pocket are disconnected, read differential pressure pick-up at the Pressure Drop of detection-phase, as be greater than differential pressure setpoint, judge and have little leakage, otherwise enter next stage; In buck stage, step-down solenoid valve is opened, the action of step-down Pneumatic valve, and by air release to two cavity in tested chamber and counter balance pocket, one of them cavity is volume adjustable device simultaneously, another one cavity can be pipeline or the closed container of fixed volume; Detection-phase reads the value of differential pressure pick-up for the second time, as surpassed setting value, judge and have large leakage, otherwise judge qualified.
Before normally detecting, should first regulate the volume of volume adjustable device to appropriate location, control method is as follows: get one of the known standard marking pen that does not have a leakage, put into marking pen apparatus for placing, the setting value of detection-phase is for the second time set to maximum, by normal testing process, detect, in detection-phase for the second time, regulate the volume of adjustable container, making the differential pressure value of standard marking pen in detection-phase is for the second time less value, and suggestion is in 100Pa.
Beneficial effect of the present invention: the overall tightness of detection of markings pen objectively; Easily realize full inspection, guarantee product quality; Testing result truly reflects the sealing property of marking pen.
Accompanying drawing explanation
Fig. 1: marking pen apparatus for placing;
Fig. 2: leak locator outside drawing;
Fig. 3: leak locator schematic diagram of gas circuit;
Fig. 4: leak locator circuit theory diagrams.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
The invention provides a kind of marking pen leak-testing apparatus, comprise marking pen apparatus for placing and leak locator.
As shown in Figure 1, described marking pen apparatus for placing comprise be pressed into cylinder 1, be pressed into air cylinder support 2, upper cavity 6, seal 5, lower chamber 4 and working plate 3.The described cylinder 1 that is pressed into is fixedly connected on working plate 3 by being pressed into air cylinder support 2, the movable end that is pressed into cylinder 1 is connected with upper cavity 6, lower chamber 4 is fixed on working plate 3, upper cavity 6 coaxially arranges with lower chamber 4, seal 5 is embedded in seal 5 grooves of lower chamber 4, when being pressed into cylinder 1, drive upper cavity 6 to be pressed on lower chamber 4, between upper cavity 6 and lower chamber 4, by seal 5, form complete tested step-down annular seal space.During test, marking pen is placed in sealing chamber.
As shown in Figure 2, described leak locator comprises casing 7, air-channel system and control system, and air-channel system and control system are arranged in casing.
As shown in Figure 3, air-channel system comprises source of the gas 11, filtering pressure reducing valve 12, reduction valve 13, two-position two-way solenoid valve 14, pressure transducer 15, two-position three way magnetic valve 16, controller 17, exhaust two-position two-way solenoid valve 18, tested step-down annular seal space 19, the first two-position 20, tested annular seal space 21, differential pressure pick-up 23, balanced seal chamber 24, the second two-position 25 and volume adjustable device 26;
Source of the gas 11, after filtering pressure reducing valve 12, is divided into two-way ,Yi road and connects two-position three way magnetic valve 16, control the step-down action of the first two-position 20 and the second two-position 25, another road, after reduction valve 13 regulates, through air inlet two-position two-way solenoid valve 14, is connected with controller 17; Bonding pressure sensor 15 and exhaust two-position two-way solenoid valve 18 between two-position two-way solenoid valve 14 and controller 17, controller 17 outlets are divided into two-way, one tunnel connects tested annular seal space 21 and the first two-position 20, after the first two-position 20, connect tested step-down annular seal space 19, another road connects balanced seal chamber 24 and the second two-position 25, after the second two-position 25, connect volume adjustable device 26, between controller 17 two-way outlets, differential pressure pick-up 23 is housed.
As shown in Figure 4, control system comprises Programmable Logic Controller 27, relay 28, touch-screen 8, described touch-screen 8 is connected with programmable logic device (PLD) 27 signals, programmable logic device (PLD) 27 output control relays 28, by relay 28, control electromagnetic valve coil 29, gas circuit components and parts are moved according to program setting, and the value of pressure transducer 15 and differential pressure pick-up 23 reads calculation process in programmable logic device (PLD).
For further illustrating marking pen sealing propertytest process, as shown in Figure 3, marking pen sealing propertytest process comprises inflation, balance, detection for the first time, step-down, detection, exhaust for the second time.During inflation, vent valve 18 is closed, and controller 17 is opened, and solenoid valve 16 controls Pneumatic valve 20 and 25 and cuts out, and gas admittance valve 14 is opened to tested annular seal space 21 and 24 inflations of balance annular seal space; Inflation, after certain hour, is closed gas admittance valve 14, enters equilibrium stage, wait for that annular seal space internal pressure is stable, reads annular seal space internal pressure value by pressure transducer 15, as is less than the charge pressure value of setting, judge to exist and leak or charge pressure deficiency, otherwise enter next step; Detection-phase for the first time, controller 17 cuts out and separates tested chamber and counter balance pocket, and the differential pressure between two cavitys is read by differential pressure pick-up 23, when detection-phase finishes for the first time, read the value of differential pressure pick-up 23 and set and allow differential pressure value as surpassed, judge to exist and leak, otherwise enter next stage; Buck stage, solenoid valve 16 action control Pneumatic valves 20 and 25 are opened, and tested annular seal space 21 and balance annular seal space 24 internal gas pressures decline, and again reach steady state (SS) after certain hour; Detection-phase for the second time, reads the pressure reduction between tested annular seal space 21 and balance annular seal space 24 after step-down by differential pressure pick-up 23, as pressure reduction is greater than the permissible pressure value of setting, judges to exist and leaks, otherwise judge that product is qualified; Exhaust phase, opens controller 17 and vent valve 18, and the gas in tested annular seal space 21, tested step-down annular seal space 19, balanced seal chamber 24 and volume adjustable device 26 is discharged through controller 17 and vent valve 18, and whole testing process finishes.
The present invention can also have other embodiment, is not deviating from the change carried out under spirit of the present invention and real situation thereof and distortion all should belong to the protection domain of the claims in the present invention.

Claims (1)

1. a marking pen leak-testing apparatus, comprises marking pen apparatus for placing and leak locator;
It is characterized in that: described marking pen apparatus for placing comprise be pressed into cylinder, be pressed into air cylinder support, upper cavity, seal, lower chamber and working plate; The described cylinder that is pressed into is fixedly connected on working plate by being pressed into air cylinder support, the movable end that is pressed into cylinder is connected with upper cavity, lower chamber is fixed on working plate, upper cavity and lower chamber coaxially arrange, seal is embedded in the seal channel of lower chamber, when being pressed into cylinder, drive upper cavity to be pressed on lower chamber, between upper cavity and lower chamber, by seal, form complete tested step-down annular seal space; During test, marking pen is placed in sealing chamber;
Described leak locator comprises casing, air-channel system and control system, and air-channel system and control system are arranged in casing;
Air-channel system comprises source of the gas, filtering pressure reducing valve, reduction valve, two-position two-way solenoid valve, pressure transducer, two-position three way magnetic valve, controller, exhaust two-position two-way solenoid valve, tested step-down annular seal space, the first two-position, tested annular seal space, differential pressure pick-up, balanced seal chamber, the second two-position and volume adjustable device;
Source of the gas, after filtering pressure reducing valve, is divided into two-way ,Yi road and connects two-position three way magnetic valve, control the step-down action of the first two-position and the second two-position, another road, after reduction valve regulates, through air inlet two-position two-way solenoid valve, is connected with controller; Bonding pressure sensor and exhaust two-position two-way solenoid valve between two-position two-way solenoid valve and controller, controller outlet is divided into two-way, one tunnel connects tested annular seal space and the first two-position, after the first two-position, connect tested step-down annular seal space, another road connects balanced seal chamber and the second two-position, after the second two-position, connect volume adjustable device, between controller outlet two-way, differential pressure pick-up is housed;
Control system comprises Programmable Logic Controller, relay, touch-screen, described touch-screen is connected with programmable logic device (PLD) signal, programmable logic device (PLD) output control relay, by Control electromagnetic valve coil, gas circuit components and parts are moved according to program setting, and the value of pressure transducer and differential pressure pick-up reads calculation process in programmable logic device (PLD).
CN201310500922.4A 2013-10-21 2013-10-21 A kind of marking pen leak-testing apparatus Active CN103604571B (en)

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CN103604571B CN103604571B (en) 2016-04-13

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103868664A (en) * 2014-03-07 2014-06-18 杭州诺航科技有限公司 Detecting device for sealing property of motor
CN104236820A (en) * 2014-09-29 2014-12-24 天津博益气动股份有限公司 Differential pressure type airtightness detecting instrument and device for detecting large-sized objects
CN105115678A (en) * 2015-07-01 2015-12-02 天津博益气动股份有限公司 Double-mode leak detector and detection method
CN109540391A (en) * 2017-09-21 2019-03-29 青海时代新能源科技有限公司 Air-tightness detection device and method
CN112304771A (en) * 2020-09-11 2021-02-02 山东泰展机电科技股份有限公司 Air pump electromagnetic valve core sorting system and working method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63121727A (en) * 1986-11-11 1988-05-25 Dainippon Printing Co Ltd Inspecting method for pin hole
JPH08247888A (en) * 1995-03-13 1996-09-27 Toyota Motor Corp Pressure leakage measuring method
US6523394B2 (en) * 2001-04-18 2003-02-25 The United States Of America As Represented By The Secretary Of The Navy Leak test fixture
CN202033162U (en) * 2011-04-15 2011-11-09 宁波中桥精密机械有限公司 Air tightness testing machine
CN102749179A (en) * 2012-06-19 2012-10-24 赛龙通信技术(深圳)有限公司 Clamp, system and method for testing air tightness
CN202928762U (en) * 2012-11-30 2013-05-08 天津市中环电子计算机有限公司 Portable tester for automatic quantification measurement of airtightness

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63121727A (en) * 1986-11-11 1988-05-25 Dainippon Printing Co Ltd Inspecting method for pin hole
JPH08247888A (en) * 1995-03-13 1996-09-27 Toyota Motor Corp Pressure leakage measuring method
US6523394B2 (en) * 2001-04-18 2003-02-25 The United States Of America As Represented By The Secretary Of The Navy Leak test fixture
CN202033162U (en) * 2011-04-15 2011-11-09 宁波中桥精密机械有限公司 Air tightness testing machine
CN102749179A (en) * 2012-06-19 2012-10-24 赛龙通信技术(深圳)有限公司 Clamp, system and method for testing air tightness
CN202928762U (en) * 2012-11-30 2013-05-08 天津市中环电子计算机有限公司 Portable tester for automatic quantification measurement of airtightness

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103868664A (en) * 2014-03-07 2014-06-18 杭州诺航科技有限公司 Detecting device for sealing property of motor
CN104236820A (en) * 2014-09-29 2014-12-24 天津博益气动股份有限公司 Differential pressure type airtightness detecting instrument and device for detecting large-sized objects
CN105115678A (en) * 2015-07-01 2015-12-02 天津博益气动股份有限公司 Double-mode leak detector and detection method
CN109540391A (en) * 2017-09-21 2019-03-29 青海时代新能源科技有限公司 Air-tightness detection device and method
CN112304771A (en) * 2020-09-11 2021-02-02 山东泰展机电科技股份有限公司 Air pump electromagnetic valve core sorting system and working method thereof

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Address after: Beiyuan No. 80 building, 310000 East Road, Zhejiang City Xiasha street Hangzhou economic and Technological Development Zone, 6 building two unit 1332 room

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