CN105352683A - Airtightness detection mechanism - Google Patents
Airtightness detection mechanism Download PDFInfo
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- CN105352683A CN105352683A CN201510814651.9A CN201510814651A CN105352683A CN 105352683 A CN105352683 A CN 105352683A CN 201510814651 A CN201510814651 A CN 201510814651A CN 105352683 A CN105352683 A CN 105352683A
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- air
- depression bar
- pressure
- sliding sleeve
- cylinder
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Abstract
The invention discloses an airtightness detection mechanism which is used for detection of airtightness of a die cast or cast member box body. The mechanism mainly comprises an air cylinder or an oil cylinder, an airtight sleeve, a sliding sleeve, a fixation plate, a follower plate, a spring, a pressure lever, an upper seal ring, a lower seal ring, a seal pressure head, a pressure gauge and the like. The working process is that the seal pressure head is pressed into a hole of a workpiece to be tested under the action of the air cylinder or the oil cylinder and sealing is achieved; meanwhile, the compressed air is guided into an inner cavity of the workpiece and forms seal pressure; the pressure value is measured by the pressure gauge; and pressure loss result is obtained through comparison of difference value between the measured pressure and the input pressure, and thus whether the workpiece to be tested has leakage due to defects of air holes, sand holes, loosening and cracks and the like can be judged. The detection mechanism has the advantages of fast detection speed, small artificial influence, reliable detection, visual detection result, high work efficiency, simple and convenient operation, small work labor intensity and the like; and the detection mechanism is high in practicability, wide in application range and can be used for detecting airtightness of die castings or the cast members in large scale.
Description
Technical field
The invention belongs to the airtight detection technique field of casting industry, be specifically related to a kind of air tightness detection machine structure.
Background technology
Foundry goods easily has the quality defects such as pore, sand holes, loose, crackle usually, easily causes quality problems such as using seepage, has a strong impact on its using function.To this, after casting or die casting complete, generally air-leakage test need be carried out to foundry goods.And whether detecting die casting cabinets cavity tissue, to connect structure fine and close, the method of usual employing is ventilation water examination method, is immersed in the water, and ventilates to workpiece by test piece, see if there is and emit bubble phenomenon, judge whether die casting casing exists the tissue defects such as pore, sand holes, shrink, crackle accordingly.But the method Shortcomings, be subject to the impact of manual operation technical ability, testing result is by micro-judgment, and checkability is low, and measured workpiece need be put into water, easily cause the secondary damages such as workpiece blocking, corrosion, spot, and dewater dehumidifying or natural air drying need be heated, duty cycle is long, adds measured workpiece maintenance and possesses workload, labour intensity is large, is unfavorable for batch detection.Therefore, in the urgent need to efficient advanced detection method fast, detect so that efficient the defects of die casting finding that die casting casing may exist fast.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of air tightness detection machine structure, by carrying out airtight detection to die casting casing, can detect whether die casting casing has the great quality defect such as pore, sand holes, shrink, crackle, effectively solves the deficiencies in the prior art fast.
The technical solution used in the present invention is:
A kind of air tightness detection machine structure, mainly comprises cylinder or oil cylinder, is also provided with airtight cover, sliding sleeve, fixed head, movable head, spring, depression bar, upper O-ring seal, lower seal, sealing pressure head, tensimeter.Wherein, airtight cover is fixedly mounted on fixed head, and its top is provided with and can passes into compressed-air actuated air admission hole, and bottom it, endoporus and fixed head contact position are provided with O-ring seal; The exterior surface place of described fixed head and sliding sleeve is provided with lower seal; Described sliding sleeve is provided with the upper hole passed through for cylinder or cylinder piston rod and the lower opening of sliding for depression bar, has the gap passed through for pressurized air between described upper hole and piston rod, and is provided with the air hole being communicated with described upper hole and lower opening; Described depression bar is provided with air intake duct, and depression bar top and sliding sleeve lower opening are connected, and described depression bar can slide in sliding sleeve; Described sealing pressure head is hollow structure, and its sidewall is connected with tensimeter, and its top is connected with depression bar is through, the pressurized air passed into can be entered in sealing pressure head, and then be directed in measured workpiece through air admission hole 6.
The course of work of the present invention is: when pressurized air passes into airtight cover by air admission hole, its pressurized air enters in sliding sleeve by cylinder or cylinder piston rod and sliding sleeve tolerance clearance, and enter in sealing pressure head by the air intake duct of depression bar and sealing pressing crown portion through hole, when cylinder or cylinder efficient, its piston rod drives sleeve movement, sliding sleeve drives depression bar and movable head to move downward again, and depression bar promotes sealing pressure head again and moves downward and enter measured workpiece main aperture and sealed simultaneously.Now, pressurized air enters measured workpiece, and at workpiece lumen mineralization pressure, and atmospheric pressure value can be measured by the tensimeter connected, draw pressure loss result by tested air pressure and the difference comparsion passing into air pressure, can judge whether measured workpiece exists the seepage because pore, sand holes, loose, crackle etc. cause.
Compared with prior art, it is fast that the present invention has detection speed, by Human disturbance affect little, detect reliable, testing result is directly perceived, detection efficiency is high, easy and simple to handle, the features such as operation labor intensity is little, it is practical, applied widely, can be used for the impermeability of mass detection die casting or cast member.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
In figure: 1-spring, 2-air intake duct, 3-movable head, 4-sliding sleeve, 5-fixed head, 6-air admission hole,
7-cylinder or cylinder piston rod, the airtight cover of 8-, the upper O-ring seal of 9-, 10-lower seal, 11-air hole
12-depression bar, 13-seals pressure head, 14-tensimeter
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
A kind of air tightness detection machine structure, see accompanying drawing 1, mainly comprises cylinder or oil cylinder, airtight cover 8, sliding sleeve 4, fixed head 5, movable head 3, spring 1, depression bar 12, upper O-ring seal 9, lower seal 10, seals pressure head 13, tensimeter 14.Described airtight cover 8 is fixedly mounted on fixed head 5, and its top is provided with and can passes into compressed-air actuated air admission hole 6, and bottom it, endoporus and fixed head 5 contact position are provided with O-ring seal 9; Described fixed head 5 is provided with lower seal 10 with the exterior surface place of sliding sleeve 4; Described sliding sleeve 4 is provided with the upper hole passed through for cylinder or cylinder piston rod 7 and the lower opening of sliding for depression bar 12, has the gap passed through for pressurized air between described upper hole and piston rod 7, and is provided with the air hole 11 being communicated with described upper hole and lower opening; Described depression bar 12 is provided with air intake duct 2, and depression bar top and sliding sleeve 4 lower opening are connected, and described depression bar can slide in sliding sleeve 4; Described sealing pressure head 13 is hollow structure, and its sidewall is equipped with tensimeter 14, and its top is through with depression bar 12 and be fixedly connected with, and the pressurized air passed into can be entered in sealing pressure head, and then enter in measured workpiece through air admission hole 6.
In addition, when moving downward for making sealing pressure head, unlikely because pressure is excessive or excessive velocities and damage measured workpiece, depression bar 12 is equipped with spring 11, to absorb the impulsive force of bounce cylinder or cylinder efficient.The end face of sealing pressure head 13 is close in one end of described spring 11, and the other end is close to the end face of sliding sleeve 4.This spring can when cylinder or oil cylinder reset, and lead agency resets.
Although the present embodiment only gives the applicable cases that measured workpiece has a detect aperture, being suitable for measured workpiece has the situation that need detect in multiple hole or the impermeability situation simultaneously detecting multiple workpiece equally.In the case, can corresponding adjustment depression bar and sealing pressure head quantity, make itself and measured workpiece need the quantity of detect aperture or consistent with measured workpiece quantity.
The foregoing is only better embodiment of the present invention, not in order to limit the present invention.All do on basis of the present invention any amendment, equivalent replacement, improvement etc., all belong to protection scope of the present invention.
Claims (2)
1. an air tightness detection machine structure, is characterized in that: mainly comprise cylinder or oil cylinder, airtight cover (8), sliding sleeve (4), fixed head (5), movable head (3), spring (1), depression bar (12), upper O-ring seal (9), lower seal (10), seal pressure head (13), tensimeter (14).Described airtight cover 8 is fixedly mounted on fixed head (5), and its top is provided with and can passes into compressed-air actuated air admission hole (6), and bottom it, endoporus and fixed head (5) contact position are provided with O-ring seal (9); Described fixed head (5) is provided with lower seal (10) with the exterior surface place of sliding sleeve (4); Described sliding sleeve (4) is provided with the upper hole passed through for cylinder or cylinder piston rod (7) and the lower opening of sliding for depression bar (12), there is between described upper hole and piston rod (7) gap passed through for pressurized air, and be provided with the air hole (11) being communicated with described upper hole and lower opening; Described depression bar (12) is provided with air intake duct (2), and depression bar top and sliding sleeve (4) lower opening are connected, and described depression bar can slide in sliding sleeve (4); Described sealing pressure head (13) is hollow structure, and its sidewall is equipped with tensimeter (14), and its top is through with depression bar (12) and be fixedly connected with.
2. a kind of air tightness detection machine structure according to claim 1, it is characterized in that: described depression bar (12) is equipped with spring (11), the end face of sealing pressure head (13) is close in one end of described spring (11), and the other end is close to the end face of sliding sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814651.9A CN105352683A (en) | 2015-11-21 | 2015-11-21 | Airtightness detection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814651.9A CN105352683A (en) | 2015-11-21 | 2015-11-21 | Airtightness detection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105352683A true CN105352683A (en) | 2016-02-24 |
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ID=55328690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510814651.9A Pending CN105352683A (en) | 2015-11-21 | 2015-11-21 | Airtightness detection mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN105352683A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827550A (en) * | 2018-09-20 | 2018-11-16 | 北京行易道科技有限公司 | Watertight test device |
| CN109405869A (en) * | 2017-08-17 | 2019-03-01 | 上海阿为特精密机械股份有限公司 | Workpiece stomata detection device and workpiece stomata detection method |
| CN109500202A (en) * | 2018-12-18 | 2019-03-22 | 东莞市智立方自动化设备有限公司 | Coiled strip Full automatic punching cut machine |
| CN113670602A (en) * | 2021-07-29 | 2021-11-19 | 西安交通大学 | Rotary dynamic seal loss testing device and method |
| CN114112248A (en) * | 2022-01-26 | 2022-03-01 | 南通中集能源装备有限公司 | Detection method for qualified sealing life of sealing ring |
-
2015
- 2015-11-21 CN CN201510814651.9A patent/CN105352683A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405869A (en) * | 2017-08-17 | 2019-03-01 | 上海阿为特精密机械股份有限公司 | Workpiece stomata detection device and workpiece stomata detection method |
| CN108827550A (en) * | 2018-09-20 | 2018-11-16 | 北京行易道科技有限公司 | Watertight test device |
| CN109500202A (en) * | 2018-12-18 | 2019-03-22 | 东莞市智立方自动化设备有限公司 | Coiled strip Full automatic punching cut machine |
| CN113670602A (en) * | 2021-07-29 | 2021-11-19 | 西安交通大学 | Rotary dynamic seal loss testing device and method |
| CN114112248A (en) * | 2022-01-26 | 2022-03-01 | 南通中集能源装备有限公司 | Detection method for qualified sealing life of sealing ring |
| CN114112248B (en) * | 2022-01-26 | 2022-05-10 | 南通中集能源装备有限公司 | Detection method for qualified sealing life of sealing ring |
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Application publication date: 20160224 |