CN203848992U - Automatic checking device for sealing performance of air valve - Google Patents
Automatic checking device for sealing performance of air valve Download PDFInfo
- Publication number
- CN203848992U CN203848992U CN201420137872.8U CN201420137872U CN203848992U CN 203848992 U CN203848992 U CN 203848992U CN 201420137872 U CN201420137872 U CN 201420137872U CN 203848992 U CN203848992 U CN 203848992U
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- China
- Prior art keywords
- seat
- valve
- checking device
- detecting
- air valve
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- Expired - Fee Related
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Abstract
An automatic checking device for sealing performance of an air valve is characterized in that: the automatic checking device comprises a detecting seat chamber; the detecting seat chamber is provided with a leakage detecting seat and an airtight chamber; the leakage detecting seat is arranged at the upper end of the detecting seat chamber; the leakage detecting seat is provided with a conical mouth with conicity that is consistent with that of an engine air valve seat; the airtight chamber is provided with an air injection opening; and the automatic checking device further comprises the components of: a vacuum chuck mechanism which is matched with the large end of the air valve, a cylinder pressure head which can compress the large end of the air valve in a manner that a compression force can be adjusted, a force measuring mechanism which can detect the compression force of the cylinder pressure head, an air pressure change detecting mechanism which is connected with the air injection opening, and a matched PLC. The automatic checking device can automatically finish a detecting process and has reliable performance and high detecting efficiency. Production cost is greatly reduced. Input of unqualified products into the market, which is caused by sampling checking omission, is effectively prevented.
Description
Technical field
The utility model relates to the production technology of engine valve, especially a kind of device that engine valve sealing property is checked.
Background technology
After the production and processing of engine valve completes, before product export, last procedure is that the conical surface of valve is carried out to sealing property inspection.Prior art is, by quality inspection personnel, inspected by random samples, on the airtight inspecting stand of special use, carries out.Its principle is, valve is packed into and detected in fixture, and press seal lid, is filled with pressurized air, by observing the water tank that downside is connected with air flue, has or not bubble to occur, determines valve whether qualified (have bubble defective).This method, because sample size deficiency very easily causes undetectedly, often causes substandard product to come into the market, and increase sampling proportion, need expend a large amount of manpowers, increases manufacturing cost.During production in enormous quantities, be badly in need of a kind of reliable and stable automatic checkout equipment that can make work seal performance checking on production line.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of valve sealing performance automatic checking device, its dependable performance, and detection efficiency is high.
The utility model adopts following technical scheme: comprise and detect seat storehouse, described detection seat storehouse is provided with leak hunting seat and airtight chamber, the described seat that leaks hunting is located at the upper end of detecting seat storehouse, the described seat that leaks hunting is provided with the bell consistent with engine valve seat tapering, described airtight chamber is provided with gas injection port, also comprise: vacuum cup mechanism of mating with the large end of valve, one can compress the cylinder pressure head of the large end of valve adjustable snap-in force, force measuring machine that can detect cylinder pressure head snap-in force, one and the joining air pressure change of gas injection port testing agency, and the PLC matching; Described vacuum cup mechanism is located at detects a seat storehouse upside; Described cylinder pressure head is located at and is detected seat storehouse upside.Its principle is: under the control of PLC, valve holds end face through vacuum cup mechanism, the upside that drives movable plate to move to detection seat storehouse by servomotor falls, the conical surface of valve coordinates location with the bell of the seat that leaks hunting, it is that cylinder pressure head is pressed on valve from top the seat that leaks hunting, airtight chamber upper end closed now, the condition of valve snap-in force when force measuring machine can be measured snap-in force and whether meets mensuration, and feeding back to PLC, PLC controls accurate voltage regulating valve regulation snap-in force to setting; PLC controls solenoid valve action, by gas injection port, toward airtight chamber, being inflated to the stipulated time reaches set pressure, then stopping aerating keeping pressure to continue the time of setting, now measure the pressure drop value in airtight chamber and feed back to PLC, PLC completes comparing of drop-out value and setting automatically, if drop-out value is not more than setting, valve-face sealing property is qualified, otherwise defective.PLC controls vacuum cup mechanism specification product and substandard product is separated.
A kind of improvement is that described force measuring machine comprises micro-heavy burden sensor and the elastic base of being located at lower end, airtight chamber; Described air pressure change testing agency comprises pressure regulator valve, precise pressure-reducing valve, the solenoid valve being serially connected with in gas circuit, also comprises a pneumatic indicator that is connected in the belt sensor of gas injection port.Micro-heavy burden sensor is measured force value and is fed back to PLC, and the action of PLC control cylinder pressure head, is adjusted to prescribed level by pressure; By solenoid control vacuum cup mechanism adsorbed gas door, enter detection station, the pressure-air of airtight detection is provided by precise pressure-reducing valve accurate adjustment, PLC controls solenoid valve and injects pressure-air to airtight chamber, sensor by pneumatic indicator changes pressure to feed back to PLC, and PLC judges that whether qualified valve is automatically.
It is another kind of that to improve the seat that leaks hunting described in being be split-type structural with detecting a seat storehouse, leak hunting seat with detect a seat storehouse and assemble by O-ring seal air hermetic.Adopt this structure, for the valve product of different specification size, only need to change the seat that leaks hunting of different size specification.
The utility model can complete detection operation automatically, dependable performance, and detection efficiency is high, has greatly reduced production cost, has effectively avoided inspecting by random samples the undetected phenomenon that causes substandard product to come into the market.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model.
Fig. 2 is the structural representation of a kind of embodiment of the utility model.
Fig. 3 is the detection seat chamber structure principle schematic of a kind of embodiment of the present utility model.
In figure: detect seat storehouse 1, the seat 2 that leaks hunting, airtight chamber 3, gas injection port 4, vacuum cup mechanism 5, cylinder pressure head 6, force measuring machine 7, air pressure change testing agency 8, micro-heavy burden sensor 9, elastic base 10, pressure regulator valve 11, precise pressure-reducing valve 12, solenoid valve 13, pneumatic indicator 14, O-ring seal 15, valve 20.
Embodiment
As shown in Figure 1 to Figure 3, a kind of embodiment of the utility model comprises a detection seat storehouse 1, described detection seat storehouse 1 is provided with leak hunting seat 2 and airtight chamber 3, the described seat 2 that leaks hunting is located at the upper end of detecting seat storehouse 1, the described seat 2 that leaks hunting is provided with the bell consistent with engine valve seat tapering, described airtight chamber 3 is provided with gas injection port 4, also comprise: a vacuum cup mechanism 5 of mating with the large end of valve 20, a cylinder pressure head 6 that can compress valve 20 large ends adjustable snap-in force, a force measuring machine 7 that can detect cylinder pressure head 6 snap-in forces, one and the joining air pressure change of gas injection port 4 testing agency 8, and the PLC matching, described vacuum cup mechanism 5 is located at detects seat storehouse 1 upside, described cylinder pressure head 6 is located at and is detected seat storehouse 1 upside.Its principle is: under the control of PLC, valve 20Jing vacuum cup mechanism 5 holds end face, the upside that drives movable plate to move to detection seat storehouse 1 by servomotor falls, the conical surface of valve 20 coordinates location with the bell of the seat 2 that leaks hunting, cylinder pressure head 6 is pressed on and leaks hunting seat 2 from top by valve 20, and airtight chamber 3 upper end closeds now measure by force measuring machine 7 condition whether snap-in forces meet valve snap-in force while measuring, and feeding back to PLC, PLC controls accurate voltage regulating valve regulation snap-in force to setting; PLC controls 8 actions of gas injection solenoid valve, by gas injection port 4, toward airtight chamber 3, being inflated to the stipulated time reaches set pressure, then stopping aerating keeping pressure to continue the time of setting, now measure the pressure drop value in airtight chamber 3 and feed back to PLC, PLC completes comparing of drop-out value and setting automatically, if drop-out value is not more than setting, valve 20 conical surface seal performances are qualified, otherwise defective.PLC commander vacuum cup mechanism 5 separates specification product and substandard product.
As shown in Figure 1 to Figure 3, a kind of improvement is that described force measuring machine 7 comprises micro-heavy burden sensor 9 and the elastic base 10 of being located at 3 lower ends, airtight chamber; Described air pressure change testing agency 8 comprises pressure regulator valve 11, precise pressure-reducing valve 12, the solenoid valve 13 being serially connected with in gas circuit, also comprises a pneumatic indicator 14 that is connected in the belt sensor of gas injection port 4.Micro-heavy burden sensor 9 is measured force value and is fed back to PLC, and the action of PLC control cylinder pressure head 6, is adjusted to prescribed level by pressure; By solenoid valve 13, control vacuum cup mechanism 5 absorption valves 20 and enter detection station, the pressure-air of airtight detection is provided by precise pressure-reducing valve 12 accurate adjustments, PLC controls solenoid valve 13 and injects pressure-air to airtight chamber 3, sensor by pneumatic indicator 14 changes pressure to feed back to PLC, and PLC judges that whether qualified valve is automatically.
As shown in Figure 3, another kind of to improve the seat 2 that leaks hunting described in being be split-type structural with detecting a seat storehouse 1, leak hunting seat 2 with detect a seat storehouse 1 and assemble by O-ring seal 15 air hermetics.Adopt this structure, for the valve product of different specification size, only need to change the seat 2 that leaks hunting of different size specification.
The utility model is not limited to the concrete structure of above-described embodiment, within the equivalent transformation of other homogeneous structure all falls into protection domain of the present utility model.
Claims (1)
1. a valve sealing performance automatic checking device, it is characterized in that: comprise and detect seat storehouse, described detection seat storehouse is provided with leak hunting seat and airtight chamber, the described seat that leaks hunting is located at the upper end of detecting seat storehouse, the described seat that leaks hunting is provided with the bell consistent with engine valve seat tapering, described airtight chamber is provided with gas injection port, also comprise: a vacuum cup mechanism of mating with the large end of valve, a cylinder pressure head that can compress the large end of valve adjustable snap-in force, a force measuring machine that can detect cylinder pressure head snap-in force, one and the joining air pressure change of gas injection port testing agency, and the PLC matching, described vacuum cup mechanism is located at detects a seat storehouse upside, described cylinder pressure head is located at and is detected seat storehouse upside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137872.8U CN203848992U (en) | 2014-03-26 | 2014-03-26 | Automatic checking device for sealing performance of air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137872.8U CN203848992U (en) | 2014-03-26 | 2014-03-26 | Automatic checking device for sealing performance of air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203848992U true CN203848992U (en) | 2014-09-24 |
Family
ID=51561995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420137872.8U Expired - Fee Related CN203848992U (en) | 2014-03-26 | 2014-03-26 | Automatic checking device for sealing performance of air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203848992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462422A (en) * | 2017-07-26 | 2017-12-12 | 安庆市鼎立汽车配件有限公司 | A kind of valve intelligent checking system |
| CN113776743A (en) * | 2021-09-16 | 2021-12-10 | 浙江杰奈尔新材料有限公司 | Air tightness detector and air tightness measuring method thereof |
-
2014
- 2014-03-26 CN CN201420137872.8U patent/CN203848992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462422A (en) * | 2017-07-26 | 2017-12-12 | 安庆市鼎立汽车配件有限公司 | A kind of valve intelligent checking system |
| CN113776743A (en) * | 2021-09-16 | 2021-12-10 | 浙江杰奈尔新材料有限公司 | Air tightness detector and air tightness measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20180326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |