CN109442041B - Sealing jig for air tightness detection - Google Patents
Sealing jig for air tightness detection Download PDFInfo
- Publication number
- CN109442041B CN109442041B CN201811644325.8A CN201811644325A CN109442041B CN 109442041 B CN109442041 B CN 109442041B CN 201811644325 A CN201811644325 A CN 201811644325A CN 109442041 B CN109442041 B CN 109442041B
- Authority
- CN
- China
- Prior art keywords
- sealing
- seal
- ring
- main body
- sealing ring
- Prior art date
- Legal status (The legal status 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 status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 90
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a sealing jig for air tightness detection, which comprises: a base; a seal assembly mounted to the base; and a positioning plate for selectively fixing the sealing assembly on the base, wherein the positioning plate is provided with a guide opening penetrating through the upper surface and the lower surface of the positioning plate, and the inner periphery of the guide opening is provided with a guide inclined surface inclined inwards in an inclined manner, so that the caliber of the guide opening gradually reduces in the direction from top to bottom. According to the invention, the structure is compact, the outer periphery of the cavity or the hole is sealed, and the bottom surface and the side surface of the product can be sealed, so that the phenomenon of detection failure or false detection caused by vacuum breaking is prevented.
Description
Technical Field
The invention relates to the field of air tightness detection, in particular to a sealing jig for air tightness detection.
Background
In some products with cavities or through holes, parts are installed in the cavities or through holes, in order to seal the parts with a base, sealing layers are often arranged between the parts and the base for sealing, in order to detect the tightness after the parts and the base are combined, a pressing method is generally adopted to seal the holes on the parts by adopting a pressing method on one side of the cavities or the holes, and a sealing assembly is adopted to seal the peripheries of the holes and then pump negative pressure for sealing the peripheries of the holes, in the traditional sealing jig, only the peripheries of the cavities or the holes are sealed, in the actual detection process, the phenomenon of broken sealing caused by the fact that the bottom surface and the side surface of the product are not sealed easily occurs, so that detection failure or false detection is caused, in addition, the traditional sealing jig has complicated positioning steps on the products, the whole jig is huge and heavy, the installation and debugging are inconvenient, and the detection efficiency is reduced.
In view of the above, it is necessary to develop a sealing jig for air tightness detection to solve the above problems.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the sealing jig for the air tightness detection, which has a compact structure, seals the bottom surface and the side surface of a product while sealing the periphery of a cavity or a hole, and prevents the occurrence of detection failure or false detection caused by vacuum breaking.
To achieve the above objects and other advantages and in accordance with the purpose of the present invention, there is provided a sealing jig for airtightness detection including:
a base;
a seal assembly mounted to the base; and
a positioning plate for selectively securing the seal assembly to the base,
wherein, the locating plate is provided with a guide opening penetrating through the upper surface and the lower surface of the locating plate, and the inner periphery of the guide opening is provided with a guide inclined plane inclined inwards in an inclined way, so that the caliber of the guide opening gradually reduces in the direction from top to bottom.
Preferably, the sealing assembly comprises:
a sealing substrate; and
an inner sealing ring and an outer sealing ring which are sequentially arranged on the top surface of the sealing substrate from inside to outside,
the inner periphery of the sealing substrate is provided with a step surface which is recessed downwards, the inner sealing ring is arranged on the step surface, and the inner sealing ring and the outer sealing ring are arranged at intervals to form a sealing abdication groove between the inner sealing ring and the outer sealing ring.
Preferably, the upper and lower surfaces of the guide opening are respectively formed with an upper opening and a lower opening, and the edge of the lower opening is flush with the inner periphery of the outer sealing ring.
Preferably, the inner periphery of the inner sealing ring is integrally formed with a sealing ring arranged on the step surface, a vacuumizing air passage with one end leading to the bottom of the sealing ring and the other end leading to the outside is arranged in the sealing substrate, and the vacuumizing air passage is connected with an exhaust pipe.
Preferably, the inner seal ring includes an inner seal body portion and an inner seal fixing portion integrally formed at an inner peripheral bottom portion of the inner seal body portion and extending horizontally inward along an inner periphery of the inner seal body portion.
Preferably, an upwardly protruding mounting riser is formed on the side wall of the step surface, and when the inner seal ring is mounted on the step surface, the outer periphery of the inner seal body portion is fitted with the side wall of the step surface, and the top of the inner seal body portion is bent outwardly beyond the top of the mounting riser and extends downwardly to cover the mounting riser therein.
Preferably, the step surface is provided with an inner pressing ring pressed on the inner sealing fixing part.
Preferably, the outer seal ring includes an outer seal main body portion and an outer seal fixing portion integrally formed at a bottom of an outer periphery of the outer seal main body portion and extending horizontally outward along the outer periphery of the outer seal main body portion.
Preferably, the sealing substrate is provided with an outer pressing ring pressed on the outer sealing fixing part.
Preferably, the fixing connection piece extending vertically downwards is fixedly connected on the outer side of the positioning plate, the fixing connection pin extending vertically downwards is fixedly connected on the top of the sealing substrate, and after the sealing substrate is connected onto the base through the fixing connection pin, the positioning plate positions the sealing substrate onto the base through the fixing connection piece.
Compared with the prior art, the invention has the beneficial effects that: the vacuum sealing device is compact in structure, and can seal the bottom surface and the side surface of a product when the periphery of a cavity or a hole is sealed, so that the phenomenon of detection failure or false detection caused by vacuum breaking is prevented.
Drawings
Fig. 1 is a three-dimensional structural view of a sealing jig for airtightness detection according to the present invention;
fig. 2 is an exploded view of a sealing jig for airtightness detection according to the present invention;
FIG. 3 is a top view of a sealing jig for airtightness detection according to the present invention;
FIG. 4 is a three-dimensional view of a seal assembly in a sealing jig for airtightness detection according to the present invention;
fig. 5 is a longitudinal sectional view of a sealing assembly in a sealing jig for airtightness detection according to the present invention.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a device for practicing the invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the top-to-bottom dimension, "width" corresponds to the left-to-right dimension, and "depth" corresponds to the front-to-back dimension. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms (e.g., "connected" and "attached") referring to an attachment, coupling, etc., refer to a relationship wherein these structures are directly or indirectly secured or attached to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
Referring to fig. 1 to 3, a sealing jig 2 for airtightness detection includes:
a base 21;
a seal assembly mounted on the base 21; and
a positioning plate 23 for selectively securing the seal assembly to the base 21,
the positioning plate 23 is provided with a guiding opening 231 penetrating through the upper and lower surfaces thereof, and a guiding inclined surface 233 inclined obliquely inwards is formed on the inner periphery of the guiding opening 231, so that the caliber of the guiding opening 231 gradually decreases in the direction from top to bottom.
Referring to fig. 4 and 5, the sealing assembly includes:
a sealing substrate 22; and
an inner seal ring 222 and an outer seal ring 221 which are sequentially provided on the top surface of the sealing substrate 22 from inside to outside,
wherein, the inner periphery of the sealing substrate 22 is formed with a step surface 227 recessed downward, the inner seal ring 222 is disposed above the step surface 227 and the inner seal ring 222 and the outer seal ring 221 are spaced apart to form a seal relief groove 224 therebetween. Such that when the product is placed in the sealing arrangement, the bottom surface of the product forms an elastic seal with the top of the inner seal ring 222 and the outer side surface forms an elastic seal with the inner periphery of the outer seal ring 221.
Further, upper and lower surfaces of the guide opening 231 are respectively formed with an upper opening and a lower opening, and edges of the lower opening are flush with an inner circumference of the outer packing 221.
Referring to fig. 4 and 5, a seal ring 223 is integrally formed on the inner periphery of the inner seal ring 222, and a vacuum-pumping path having one end leading to the bottom of the seal ring 223 and the other end leading to the outside is opened in the seal substrate 22. When the product is placed in the sealing structure, the outer perimeter of the cavity or hole to be sealed on the product is sealed by the sealing ring 223.
Further, the vacuumizing air path is connected with an air exhaust pipe 225.
Referring to fig. 5, the inner seal ring 222 includes an inner seal body portion 2222 and an inner seal fixing portion 2221, the inner seal fixing portion 2221 being integrally formed at the inner peripheral bottom of the inner seal body portion 2222 and extending horizontally inward along the inner periphery of the inner seal body portion 2222.
Further, an upwardly protruding mounting riser 228 is formed on the sidewall of the step surface 227, and when the inner seal ring 222 is mounted on the step surface 227, the outer periphery of the inner seal body portion 2222 is fitted to the sidewall of the step surface 227, and the top of the inner seal body portion 2222 is bent outwardly beyond the top of the mounting riser 228 and extends downwardly to enclose the mounting riser 228 therein.
Referring again to fig. 5, the stepped surface 227 is provided with an inner ring 226 pressed against the inner seal fixing portion 2221.
Further, the outer seal ring 221 includes an outer seal body portion 2211 and an outer seal fixing portion 2212, and the outer seal fixing portion 2212 is integrally formed at the outer circumferential bottom of the outer seal body portion 2211 and extends horizontally outwardly along the outer circumference of the outer seal body portion 2211.
Further, the sealing substrate 22 is provided with an outer pressing ring 229 pressed against the outer seal fixing portion 2212.
Further, an inner protrusion 2213 is integrally formed on the inner periphery of the outer sealing body portion 2211, and the inner protrusion 2213 protrudes from the inner peripheral surface of the outer sealing body portion 2211.
In a preferred embodiment, the longitudinal cross section of the inner lobe 2213 is semi-circular.
Referring to fig. 1 and 2, a fixing connection piece 232 extending vertically downward is fixedly connected to the outer side of the positioning plate 23, a fixing connection pin 24 extending vertically downward is fixedly connected to the top of the sealing substrate 22, and after the sealing substrate 22 is connected to the base 21 through the fixing connection pin 24, the positioning plate 23 is inserted into a corresponding connection hole 213 on the base 21 through the fixing connection piece 232, so as to position the sealing substrate 22 on the base 21. In a preferred embodiment, the outer side of the base 21 is also provided with a connecting pin lock lever 212 and a connecting piece lock lever 211 which are selectively engaged with the fixed connecting pin 24 and the fixed connecting piece 232, respectively.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. A sealing jig (2) for gas tightness detection, characterized by comprising:
a base (21);
a seal assembly mounted to the base (21); and
a positioning plate (23) for selectively fixing the sealing assembly to the base (21),
wherein, the locating plate (23) is provided with a guide opening (231) penetrating through the upper surface and the lower surface of the locating plate, and the inner circumference of the guide opening (231) is provided with a guide inclined surface (233) inclined obliquely inwards so that the caliber of the guide opening (231) gradually reduces in the direction from top to bottom;
the seal assembly includes:
a sealing substrate (22); and
an inner sealing ring (222) and an outer sealing ring (221) which are sequentially arranged on the top surface of the sealing substrate (22) from inside to outside,
wherein, the inner circumference of the sealing substrate (22) is provided with a step surface (227) which is concave downwards, the inner sealing ring (222) is arranged on the step surface (227) and the inner sealing ring (222) and the outer sealing ring (221) are arranged at intervals to form a sealing abdication groove (224) between the inner sealing ring and the outer sealing ring;
a sealing ring (223) arranged on the step surface (227) is integrally formed on the inner periphery of the inner sealing ring (222), a vacuumizing air passage with one end communicated with the bottom of the sealing ring (223) and the other end communicated with the outside is arranged in the sealing substrate (22), and the vacuumizing air passage is connected with an exhaust pipe (225);
the inner seal ring (222) comprises an inner seal main body part (2222) and an inner seal fixing part (2221), wherein the inner seal fixing part (2221) is integrally formed at the inner periphery bottom of the inner seal main body part (2222) and extends inwards along the inner periphery of the inner seal main body part (2222) horizontally;
the side wall of the step surface (227) is provided with an upward protruding mounting vertical plate (228), when the inner sealing ring (222) is mounted on the step surface (227), the periphery of the inner sealing main body part (2222) is attached to the side wall of the step surface (227), and the top of the inner sealing main body part (2222) is bent outwards and extends downwards after passing over the top of the mounting vertical plate (228) so as to cover the mounting vertical plate (228) in the mounting vertical plate.
2. The sealing jig (2) for airtightness detection according to claim 1, wherein the upper and lower surfaces of the guide opening (231) are respectively formed with an upper opening and a lower opening, and edges of the lower opening are flush with the inner circumference of the outer seal ring (221).
3. The sealing jig (2) for airtightness detection according to claim 1, wherein an inner pressure ring (226) press-fitted over the inner seal fixing portion (2221) is provided on the step surface (227).
4. The sealing jig (2) for airtightness detection according to claim 1, wherein the outer seal ring (221) includes an outer seal main body portion (2211) and an outer seal fixing portion (2212), and the outer seal fixing portion (2212) is integrally formed at the outer peripheral bottom of the outer seal main body portion (2211) and extends horizontally outward along the outer periphery of the outer seal main body portion (2211).
5. The sealing jig (2) for airtightness detection according to claim 4, wherein the sealing substrate (22) is provided with an outer pressing ring (229) pressed on the outer sealing fixing portion (2212).
6. The sealing jig (2) for air tightness detection according to claim 1, wherein a fixing connection piece (232) extending vertically downwards is fixedly connected on the outer side of the positioning plate (23), a fixing connection pin (24) extending vertically downwards is fixedly connected on the top of the sealing substrate (22), and after the sealing substrate (22) is connected onto the base (21) through the fixing connection pin (24), the positioning plate (23) positions the sealing substrate (22) onto the base (21) through the fixing connection piece (232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644325.8A CN109442041B (en) | 2018-12-30 | 2018-12-30 | Sealing jig for air tightness detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644325.8A CN109442041B (en) | 2018-12-30 | 2018-12-30 | Sealing jig for air tightness detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109442041A CN109442041A (en) | 2019-03-08 |
| CN109442041B true CN109442041B (en) | 2024-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811644325.8A Active CN109442041B (en) | 2018-12-30 | 2018-12-30 | Sealing jig for air tightness detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109442041B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404860B (en) * | 2021-06-30 | 2022-09-09 | 苏州富强科技有限公司 | Lower seal carrier |
| CN113358288B (en) * | 2021-07-01 | 2024-03-22 | 苏州富强科技有限公司 | Sliding type lower sealing carrier |
| CN114370973A (en) * | 2021-12-16 | 2022-04-19 | 苏州富强科技有限公司 | Screen gas tightness detection tool |
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| CN208187640U (en) * | 2018-05-28 | 2018-12-04 | 宁波舜宇仪器有限公司 | Vehicle-mounted mould group air tightness detection equipment |
| CN209469792U (en) * | 2018-12-30 | 2019-10-08 | 苏州富强科技有限公司 | A kind of sealing jig for air-leakage test |
-
2018
- 2018-12-30 CN CN201811644325.8A patent/CN109442041B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070101455A (en) * | 2006-04-10 | 2007-10-17 | 이근주 | Sealing structure of licence plate for car |
| CN104220794A (en) * | 2012-03-20 | 2014-12-17 | 阿斯卡拉波股份有限公司 | Medical seal and medical sterilisation vessel |
| CN104634524A (en) * | 2013-11-11 | 2015-05-20 | 富鼎电子科技(嘉善)有限公司 | Air tightness detection device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109442041A (en) | 2019-03-08 |
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