CN202033162U - Air tightness testing machine - Google Patents
Air tightness testing machine Download PDFInfo
- Publication number
- CN202033162U CN202033162U CN2011201228680U CN201120122868U CN202033162U CN 202033162 U CN202033162 U CN 202033162U CN 2011201228680 U CN2011201228680 U CN 2011201228680U CN 201120122868 U CN201120122868 U CN 201120122868U CN 202033162 U CN202033162 U CN 202033162U
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- hydraulic cylinder
- pressing plate
- air
- clamp
- lower clamp
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Abstract
The utility model relates to an air tightness testing machine, which comprises a testing frame, a clamp, an air channel and a control box. The testing frame comprises a hydraulic cylinder, a bracket with a pressing plate and a base, wherein a piston rod of the hydraulic cylinder is connected with the pressing plate to drive the pressing plate to move up and down along a guide column; the clamp comprises an upper clamp and a lower clamp, the upper clamp is fixed on the lower surface of the pressing plate through a bolt, the lower clamp is arranged on a lower plate in the bracket, and a workpiece to be tested is matched with the lower clamp to form a sealed cavity; the lower clamp is internally provided with an air inlet and an air outlet, and the air inlet and the air outlet are communicated with the sealed cavity; and one end of an air discharging tube is connected with the air outlet, the other end of the air discharging tube is connected with an air discharging solenoid valve, a pressure sensor is arranged on the air discharging tube, and the air discharging tube is connected with a PLC (programmable logic controller) control circuit in the control box. The utility model has the advantages that an upper mold made of rubber and a lower mold made of rubber can be accurately matched with a product, the troublesome installation and removal of screws can be avoided, and the rate of false detection can be decreased; and multiple groups of products can be tested at the same time, the testing parameters of each group of products can be adjusted separately, the testing results can be judged automatically and displayed separately, and the rate of equipment utilization can be increased.
Description
Affiliated technical field
The utility model relates to a kind of checkout equipment, especially the airtight test machine of auto parts.
Background technology
The security requirement of automobile industry is very high, because wind and weather under the physical environment, the sealing of protective covers such as car light, safe capsule detects extremely important, and common test mode has hydrolock to detect and inflates and detect at present.
" be used to detect the anchor clamps of gas tightness of automobile cooling pipe " as CN 200920198201.1, belong to hydrolock and detect, element to be tested immerses in the water, charges into gases at high pressure in the element, and whether check element surface and collect has bubble to ooze out.This type of detection method is comparatively simple, and cost is lower, but need also be needed to increase baking operation after the test and increase equipment by water erosion during element test.
As CN 200910030844.x " identification device for air tightness detection of vehicle lamps ", provide a kind of airtight pick-up unit, simultaneously to the certified products automatic sealing.Belong to the inflation detection mode.But light fixture will be fixed on the airtight anchor clamps during test, also needs bolt to tighten, and operates comparatively time-consumingly, once can only test a light fixture, and test speed is slow, does not satisfy the demand of producing in batches.
Summary of the invention
Technical problem to be solved in the utility model: a kind of airtight test machine is provided, can tests a plurality of workpiece simultaneously, judge the quality of part automatically, the measuring accuracy height, good reliability has improved the efficient of air tightness test effectively.
The technical scheme in the invention for solving the above technical problem is: a kind of airtight test machine, form by testing jig, anchor clamps, gas circuit and control box, described testing jig comprises hydraulic cylinder and has the support and the base of pressing plate, the piston rod of hydraulic cylinder is connected with pressing plate, drives pressing plate and moves up and down along guide pillar; Anchor clamps are divided into anchor clamps and lower clamp, and last anchor clamps are fixed by bolts to the lower surface of pressing plate, and lower clamp is installed on the lower plate in the support, and workpiece for measurement cooperates with lower clamp, forms an annular seal space; Air admission hole and venthole are arranged in the lower clamp, all communicate with annular seal space; Escape pipe one end links to each other with venthole, and the other end links to each other with exhaust solenoid valve, and pressure transducer is installed on the escape pipe, and is connected with PLC control circuit in the control box.
Described hydraulic cylinder is an oil hydraulic cylinder, hydraulic cylinder into and out of oil circuit the oil circuit solenoid valve is installed all, the PLC control circuit in oil circuit solenoid valve and the control box is connected.
The upper and lower limit bit switch is installed on the outer wall of described hydraulic cylinder, is magnetic induction switch.
Iron sense block is installed on the piston rod of described hydraulic cylinder, and iron sense block and upper and lower limit bit switch cooperate.
Compared with prior art, advantage of the present utility model is: the anchor clamps and the workpiece for measurement that utilize rubber to make accurately cooperate, under the thrust of pressing plate, form sealing, the stroke that presses down can be regulated, loaded down with trivial details screw assembling and the process of dismantling have been avoided, not only improved testing efficiency, significantly reduced also that coping screw is not locked and the mistake that causes is surveyed; A plurality of workpiece can be tested simultaneously, and test result is independent displaying separately, if defective all, then test board stops test automatically, rises pressing plate, reduces the stand-by period, have further improved the efficient of test; Therefore and the pressure in each measured workpiece can independently control, and can test different types of workpiece simultaneously, improved plant factor.
Description of drawings
Fig. 1 is the structural representation (having omitted gas circuit and oil circuit) of the utility model test board part
Fig. 2 is the A-A cut-open view among the figure
Fig. 3 is gas circuit structure figure
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
A kind of airtight test machine as shown in Figure 1, is made up of testing jig, anchor clamps, gas circuit and control box 14.Testing jig comprises hydraulic cylinder and has the support and the base of pressing plate, support is composed of a fixed connection upper plate 5 and lower plate 11 by four root posts, hydraulic cylinder 1 is installed on the upper plate 5, adopt oilgear, hydraulic cylinder into and out of oil circuit the oil circuit solenoid valve is installed all, the PLC control circuit in oil circuit solenoid valve and the control box is connected.The piston rod 16 of hydraulic cylinder is fixedlyed connected with pressing plate 7.Guide pillar 6 passes pressing plate 7, is fixed between upper plate 5 and the lower plate 11.
The iron sense block 15 of an annular is installed on the piston of hydraulic cylinder 1, and with moving of piston rod 16, hydraulic cylinder is equipped with upper and lower limit bit switch (2,3) outward, and limit switch is magnetic induction switch, is used for detecting the stroke of piston head.
Anchor clamps are installed between pressing plate 7 and the lower plate 11, and anchor clamps are divided into anchor clamps 8 and lower clamp 9.The pressing plate lower surface is equipped with anchor clamps 8, and the lower plate upper surface is equipped with lower clamp 9, and lower clamp is that rubber is made, and under the pressure of pressing plate, forms annular seal space between test product 17 and the lower clamp 9.
Air admission hole 9-1 and venthole 9-2 are arranged in the lower clamp 9, as shown in Figure 3, after pressurized air makes up 18 through 3, be distributed into many group gas circuits, through independently pressure regulator valve 19, inflation solenoid valve 20 separately, enter annular seal space between product 17 to be measured and the lower clamp 9 along draft tube 12, air admission hole 9-1 in.3 combinations 18 have filters and the solenoid valve function.Venthole 9-2, escape pipe 10 are connecting pressure transducer 4 and exhaust solenoid valve 21.Have numeral on the pressure transducer 4 and show, can show force value, and the pressure in the product is passed to PLC control circuit in the control box 14 with electric signal.
Gas circuit described in the embodiment has two groups, can test two products simultaneously.Can be arranged to 4 groups or more groups as required.
As shown in Figure 2, during test, adjust the air inlet air pressure of pressure regulator valve 19, set the position and the measuring air pressure of limit switch (2,3), product 17 to be measured is installed on the lower clamp 9.The beginning button of pressing 12, PLC control hydraulic oil down enter in the hydraulic cylinder 1, and piston is descended, and the last anchor clamps 8 that piston rod 16 drives under pressing plate 7 and the pressing plate are pressed on the test product 17.After dropping to lower position switch 3, iron sense block 15 in piston stops oil-feed.
3 combinations 18 of PLC control, beginning annular seal space inflation in product to be measured, pressure transducer 4 begin to detect and show pressure in the test product 17, and feed back to PLC by electric signal, until reaching setting value.Delayed time then 15 seconds, and allowed the gaseous tension that charges in the product stablize.
After 15 seconds, 20 outages of inflation solenoid valve picked up counting 10 seconds, and PLC calculates the drop-out value of product 17 internal gas pressures to be measured according to pressure transducer 4 values of feedback.If the voltage drop value in all products is all less than setting value, it is qualified then all to judge, PLC controls the air pressure that exhaust solenoid valve 21 is discharged in the products, and 16 rises of the piston rod in the control hydraulic cylinder 1, stops after the iron sense block 15 in piston rises to upper limit position switch 2.
If have defective in the test products, then the alarm lamp of correspondence is bright on the control box 14, and the product of waiting for other continues test, if all products are all defective, after confirming that then last product is defective, PLC control test board stops test, opens exhaust solenoid valve and pressing plate 7 is risen, to save time.
After discovery has product defective, can not carry out test loop next time, need to press the exceptional reset button on the control box 13, after elimination is unusual, could continue test.Like this, avoided unacceptable product to flow into subsequent processing.
According to actual needs, many groups of test board anchor clamps can be configured to the product of identical or different kind, test simultaneously, and the test result independent displaying further improves testing efficiency and capacity utilization.
Claims (4)
1. airtight test machine, form by testing jig, anchor clamps, gas circuit and control box (13), it is characterized in that, described testing jig comprises hydraulic cylinder (1) and has the support and the base of pressing plate (7), the piston rod of hydraulic cylinder (16) is connected with pressing plate (7), drives pressing plate and moves up and down along guide pillar (10); Anchor clamps are divided into anchor clamps (8) and lower clamp (9), and last anchor clamps are fixed by bolts to the lower surface of pressing plate (7), and lower clamp is installed on the lower plate (11) in the support, and workpiece for measurement cooperates with lower clamp, forms an annular seal space; Air admission hole (9-1) and venthole (9-2) are arranged in the lower clamp (9), all communicate with annular seal space; The tracheae (10) that links to each other with venthole (9-2), the other end links to each other with exhaust solenoid valve (21), and pressure transducer (4) is installed on the tracheae (10), and pressure transducer has numeral and shows, and is connected with PLC control circuit in the control box (13).
2. airtight test machine according to claim 1 is characterized in that, described hydraulic cylinder (1) is an oil hydraulic cylinder, hydraulic cylinder into and out of oil circuit solenoid valve is installed all, the PLC control circuit in solenoid valve and the control box is connected.
3. airtight test machine according to claim 1 is characterized in that, upper and lower limit bit switch (2,3) is installed on the outer wall of described hydraulic cylinder (1), is magnetic induction switch.
4. according to claim 1 or the described airtight test machine of claim 3, it is characterized in that, on the piston rod (16) of described hydraulic cylinder (1) iron sense block (15) is installed, iron sense block and upper and lower limit bit switch (2,3) cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201228680U CN202033162U (en) | 2011-04-15 | 2011-04-15 | Air tightness testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201228680U CN202033162U (en) | 2011-04-15 | 2011-04-15 | Air tightness testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033162U true CN202033162U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201228680U Expired - Lifetime CN202033162U (en) | 2011-04-15 | 2011-04-15 | Air tightness testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033162U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607778A (en) * | 2012-02-27 | 2012-07-25 | 成都九鼎科技(集团)有限公司 | Novel airtight tester for shock absorber |
| 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 |
| CN102937505A (en) * | 2012-10-29 | 2013-02-20 | 昆山市力格自动化设备有限公司 | Automobile connector shell sealing detection device |
| CN103604571A (en) * | 2013-10-21 | 2014-02-26 | 杭州诺航科技有限公司 | Mark pen sealing performance detection equipment |
| CN103630306A (en) * | 2013-12-06 | 2014-03-12 | 苏州逸美德自动化科技有限公司 | Leak detection device |
| CN104374533A (en) * | 2014-12-12 | 2015-02-25 | 苏州工业园区艺达精密机械有限公司 | Airtightness testing machine capable of quickly changing tooling |
| CN104596710A (en) * | 2014-12-29 | 2015-05-06 | 宁波华瓷通信技术有限公司 | Gas tightness test equipment |
| CN105798671A (en) * | 2016-04-22 | 2016-07-27 | 安徽机电职业技术学院 | Special hydraulic type work fixture for production of lathe |
| CN107727334A (en) * | 2017-10-19 | 2018-02-23 | 劳福厚 | A kind of cylinder air-tightness detection device |
| CN107891395A (en) * | 2017-12-20 | 2018-04-10 | 广州市新欧机械有限公司 | Hydraulic cylinder dismounting, assembling, testing integrated machine |
| CN108225680A (en) * | 2016-12-22 | 2018-06-29 | 上海瑞孚管路系统有限公司 | Pipe fitting sealing property detection device |
| CN109341975A (en) * | 2018-10-08 | 2019-02-15 | 苏州中晟精密制造有限公司 | A kind of airtight automation equipment of test |
| CN111238732A (en) * | 2020-03-31 | 2020-06-05 | 崔海军 | Aviation sealing element sealing performance detection method and detection device |
| CN111289186A (en) * | 2020-03-01 | 2020-06-16 | 湖北湘纬新能源科技有限公司 | Helium detection device and detection method for lithium battery structural member |
| CN112161762A (en) * | 2020-09-09 | 2021-01-01 | 江苏南方机电股份有限公司 | Oil cylinder air tightness detection device |
| CN114136608A (en) * | 2021-12-17 | 2022-03-04 | 重庆百吉四兴压铸有限公司 | Pressure test system |
| CN116858760A (en) * | 2023-07-26 | 2023-10-10 | 威海成景科技有限公司 | Silicone sealant performance intelligent detection device |
-
2011
- 2011-04-15 CN CN2011201228680U patent/CN202033162U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607778A (en) * | 2012-02-27 | 2012-07-25 | 成都九鼎科技(集团)有限公司 | Novel airtight tester for shock absorber |
| 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 |
| CN102937505A (en) * | 2012-10-29 | 2013-02-20 | 昆山市力格自动化设备有限公司 | Automobile connector shell sealing detection device |
| CN103604571A (en) * | 2013-10-21 | 2014-02-26 | 杭州诺航科技有限公司 | Mark pen sealing performance detection equipment |
| CN103604571B (en) * | 2013-10-21 | 2016-04-13 | 杭州诺荣测控技术有限公司 | A kind of marking pen leak-testing apparatus |
| CN103630306A (en) * | 2013-12-06 | 2014-03-12 | 苏州逸美德自动化科技有限公司 | Leak detection device |
| CN104374533A (en) * | 2014-12-12 | 2015-02-25 | 苏州工业园区艺达精密机械有限公司 | Airtightness testing machine capable of quickly changing tooling |
| CN104596710A (en) * | 2014-12-29 | 2015-05-06 | 宁波华瓷通信技术有限公司 | Gas tightness test equipment |
| CN105798671A (en) * | 2016-04-22 | 2016-07-27 | 安徽机电职业技术学院 | Special hydraulic type work fixture for production of lathe |
| CN108225680A (en) * | 2016-12-22 | 2018-06-29 | 上海瑞孚管路系统有限公司 | Pipe fitting sealing property detection device |
| CN107727334A (en) * | 2017-10-19 | 2018-02-23 | 劳福厚 | A kind of cylinder air-tightness detection device |
| CN107891395A (en) * | 2017-12-20 | 2018-04-10 | 广州市新欧机械有限公司 | Hydraulic cylinder dismounting, assembling, testing integrated machine |
| CN109341975A (en) * | 2018-10-08 | 2019-02-15 | 苏州中晟精密制造有限公司 | A kind of airtight automation equipment of test |
| CN111289186A (en) * | 2020-03-01 | 2020-06-16 | 湖北湘纬新能源科技有限公司 | Helium detection device and detection method for lithium battery structural member |
| CN111238732A (en) * | 2020-03-31 | 2020-06-05 | 崔海军 | Aviation sealing element sealing performance detection method and detection device |
| CN112161762A (en) * | 2020-09-09 | 2021-01-01 | 江苏南方机电股份有限公司 | Oil cylinder air tightness detection device |
| CN114136608A (en) * | 2021-12-17 | 2022-03-04 | 重庆百吉四兴压铸有限公司 | Pressure test system |
| CN116858760A (en) * | 2023-07-26 | 2023-10-10 | 威海成景科技有限公司 | Silicone sealant performance intelligent detection device |
| CN116858760B (en) * | 2023-07-26 | 2024-02-09 | 威海成景科技有限公司 | Silicone sealant performance intelligent detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |
|
| CX01 | Expiry of patent term |