CN113465841B - Air tightness detection equipment - Google Patents

Air tightness detection equipment Download PDF

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Publication number
CN113465841B
CN113465841B CN202110742699.9A CN202110742699A CN113465841B CN 113465841 B CN113465841 B CN 113465841B CN 202110742699 A CN202110742699 A CN 202110742699A CN 113465841 B CN113465841 B CN 113465841B
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China
Prior art keywords
sealing
sealing ring
shell
tested
carrier
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CN202110742699.9A
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CN113465841A (en
Inventor
倪文杰
黎宗彩
汤勇杰
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Bozhon Precision Industry Technology Co Ltd
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Bozhon Precision Industry Technology Co Ltd
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Priority to CN202110742699.9A priority Critical patent/CN113465841B/en
Publication of CN113465841A publication Critical patent/CN113465841A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention discloses an air tightness detection device, which comprises: the bottom sealing mechanism comprises a carrier, a bottom sealing ring for sealing the bottom of the shell to be tested is arranged on the carrier, and an air inlet hole and an air pressure sensor for detecting the air pressure in the shell to be tested are also arranged on the carrier; the pressing mechanism comprises a pressing block and a pressing driving assembly; the outer sealing mechanism comprises an outer sealing ring and an outer driving assembly; the inner side sealing mechanism comprises an inner side sealing ring, a connecting component and an inner side driving component, wherein the connecting component penetrates through the carrier from the outer side into the shell to be tested, the inner side sealing ring is connected with the connecting component, the inner side driving component is connected with the connecting component and drives the connecting component, and the connecting component drives the inner side sealing ring to seal a charging port of the shell to be tested from the inner side. The invention can seal the charging port of the shell to be tested from the inner side, has influence on the dispensing position around the charging port, and has the advantages of reasonable structure, good sealing effect and high detection accuracy.

Description

Air tightness detection equipment
Technical Field
The invention relates to the technical field of air tightness detection, in particular to air tightness detection equipment.
Background
In the processing process of the mobile phone shell, the mobile phone shell is required to be divided into a plurality of parts to be processed independently, then each part is assembled and formed through dispensing, after the assembly and forming, the mobile phone shell is required to be subjected to air tightness detection, all holes are required to be sealed during detection, whether the positions of the dispensing glue are leaked or not is detected, and whether the dispensing glue of a product is qualified or not is detected. Along with the thinner and thinner cell-phone, cell-phone shell's mouth that charges is more and more nearer to the point department of gluing, traditional sealing means can generally lead to the fact the influence to the point around the mouth that charges glues the position when sealed the mouth to influence the detection to the point around the mouth that charges glues the position, and then influence the accuracy that the gas tightness detected. Therefore, a new air tightness detecting apparatus is needed to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing the air tightness detection equipment which has reasonable structure, can seal the charging port from the inner side and has high accuracy.
In order to solve the above-described problems, the present invention provides an air tightness detection apparatus comprising:
the bottom sealing mechanism comprises a carrier, wherein a bottom sealing ring for sealing the bottom of the shell to be tested is arranged on the carrier, an air inlet hole and an air pressure sensor for detecting the air pressure in the shell to be tested are also arranged on the carrier, and the air inlet hole is connected with an air supply device;
the pressing mechanism comprises a pressing block and a pressing driving assembly, and the pressing driving assembly is connected with the pressing block and drives the pressing block to press the shell to be tested on the carrier;
the outer sealing mechanism comprises an outer sealing ring and an outer driving assembly, and the outer driving assembly is connected with the outer sealing ring and drives the outer sealing ring to seal the side hole of the shell to be tested from the outer side;
the inner side sealing mechanism comprises an inner side sealing ring, a connecting component and an inner side driving component, wherein the connecting component penetrates through the carrier from the outer side into the shell to be tested, the inner side sealing ring is connected with the connecting component, the inner side driving component is connected with the connecting component and drives the connecting component, and the connecting component drives the inner side sealing ring to seal a charging port of the shell to be tested from the inner side.
As a further improvement of the invention, the connecting component comprises a push rod and a sealing pressure head, the sealing pressure head is connected with the push rod, the inner sealing ring is connected with the sealing pressure head, a movable cavity matched with the push rod is arranged on the carrier, the push rod is sleeved with the push rod sealing ring, the push rod sealing ring seals between the push rod and the movable cavity, the inner driving component can drive the push rod to move in the movable cavity, the push rod drives the sealing pressure head, and the sealing pressure head drives the inner sealing ring to move.
As a further improvement of the invention, the carrier is also provided with a sliding rail, and the sealing pressure head is connected with the sliding rail through a sliding block.
The back sealing mechanism comprises a back sealing ring and a back driving assembly, wherein the back driving assembly is connected with the back sealing ring and drives the back sealing ring to seal a camera hole in the back of the shell to be tested.
The lifting mechanism comprises a lifting plate, a guide post and a lifting power source, wherein the lifting plate is connected with the guide post through a linear bearing, the lifting power source is connected with the lifting plate and drives the lifting plate to lift, and the bottom sealing mechanism and the back sealing mechanism are both arranged on the lifting plate.
The invention further improves the device and further comprises a translation mechanism, wherein the translation mechanism comprises a translation track and a translation driving source, a translation bottom plate is arranged on the translation track, the bottom sealing mechanism, the outer sealing mechanism and the inner sealing mechanism are all arranged on the translation bottom plate, and the translation driving source can drive the translation bottom plate to be below the pushing mechanism.
As a further improvement of the invention, the carrier is provided with a bulge, the bottom sealing ring is surrounded on the bulge, and the bottom sealing ring is provided with a step type sealing structure.
As a further improvement of the invention, the pressing mechanism further comprises a first pressure sensor, and the pressing block is connected with the pressing driving assembly through the first pressure sensor.
As a further improvement of the invention, the inner sealing ring is provided with a sealing plane which is abutted against the periphery of the charging port on the inner wall of the shell to be tested.
As a further improvement of the invention, the outer sealing ring is provided with a sealing curved surface which is abutted with the periphery of the upper side hole of the outer wall of the shell to be tested.
The invention has the beneficial effects that:
according to the air tightness detection device, the charging port of the shell to be detected can be sealed from the inner side by arranging the inner side sealing mechanism, so that the influence of the outer side sealing on the dispensing position around the charging port is avoided, and the accuracy of air tightness detection is further ensured. The air tightness detection device has the advantages of reasonable structure, good sealing effect and high detection accuracy.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a schematic view showing the overall structure of an air tightness detecting apparatus in a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the assembly of the bottom seal, the outboard seal and the inboard seal in a preferred embodiment of the invention;
FIG. 3 is a schematic view of the inner seal mechanism in accordance with the preferred embodiment of the present invention;
FIG. 4 is a schematic view of a carrier according to a preferred embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic view of the assembled structure of the bottom seal and the inside seal in a preferred embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;
FIG. 8 is a schematic view of the structure of the pressing mechanism in the preferred embodiment of the present invention;
FIG. 9 is a schematic view of the back seal mechanism in accordance with the preferred embodiment of the present invention;
FIG. 10 is a schematic view of the assembly of the hold-down mechanism, back seal mechanism and lifting mechanism in a preferred embodiment of the present invention;
FIG. 11 is a schematic view of the structure of the outside seal mechanism in the preferred embodiment of the present invention;
fig. 12 is a schematic view of the structure of the translation mechanism in the preferred embodiment of the present invention.
Marking: 1. a shell to be tested; 10. a bottom sealing mechanism; 11. a carrier; 12. a bottom sealing ring; 13. an air inlet hole; 14. a movable cavity; 15. a boss; 20. a pressing mechanism; 21. briquetting; 22. pressing down the driving assembly; 221. a first motor; 222. a first pressure sensor; 223. a first lead screw; 224. a first lifting seat; 225. a driving wheel; 226. driven wheel; 30. an outer sealing mechanism; 31. an outer seal ring; 32. an outboard power source; 33. a side joint; 34. a movable seat; 35. a guide rod; 36. a spring; 40. an inner sealing mechanism; 41. an inner seal ring; 42. a push rod; 43. sealing the pressure head; 44. a push rod sealing ring; 45. a slide rail; 46. a slide block; 47. an inner drive assembly; 50. a back sealing mechanism; 51. a back seal ring; 521. a second motor; 522. a second pressure sensor; 60. a lifting mechanism; 61. a lifting plate; 62. a guide post; 63. a lifting power source; 64. a linear bearing; 70. a translation mechanism; 71. translating the track; 72. a translational drive source; 80. translating the bottom plate; 90. and a hard limit column.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
As shown in fig. 1 to 12, the air tightness detecting apparatus in the preferred embodiment of the present invention includes a bottom sealing mechanism 10, a pressing mechanism 20, an outside sealing mechanism 30, and an inside sealing mechanism 40.
The bottom sealing mechanism 10 comprises a carrier 11, wherein a bottom sealing ring 12 for sealing the bottom of the shell 1 to be tested is arranged on the carrier 11, an air inlet hole 13 and an air pressure sensor for detecting the air pressure in the shell 1 to be tested are also arranged on the carrier 11, and the air inlet hole 13 is connected with an air supply device.
The pressing mechanism 20 comprises a pressing block 21 and a pressing driving assembly 22, and the pressing driving assembly 22 is connected with the pressing block 21 and drives the pressing block 21 to press the shell 1 to be tested on the carrier 11.
The outer sealing mechanism 30 comprises an outer sealing ring 31 and an outer driving assembly, and the outer driving assembly is connected with the outer sealing ring 31 and drives the outer sealing ring 31 to seal the side hole of the shell 1 to be tested from the outer side.
The inner sealing mechanism 40 comprises an inner sealing ring 41, a connecting component and an inner driving component 47, the connecting component penetrates through the carrier 11 from the outer side into the shell 1 to be tested, the inner sealing ring 41 is connected with the connecting component, the inner driving component 47 is connected with the connecting component and drives the connecting component, and the connecting component drives the inner sealing ring 41 to seal a charging port of the shell 1 to be tested from the inner side.
In the present invention, the housing 1 to be tested may be a cell phone case or a tablet case, etc.
During detection, the shell 1 to be detected is placed at a preset position on the carrier 11, then the shell 1 to be detected is pressed down on the carrier 11 by pressing down the driving component to drive the pressing block 21, then the outer sealing ring 31 is driven by the outer driving component to seal the side hole of the shell 1 to be detected from the outer side, the inner sealing ring 41 is driven by the inner driving component 47 to seal the charging port of the shell 1 to be detected from the inner side, then the air supply device is opened to charge the shell 1 to be detected through the air inlet hole 13, and after the charging is finished, whether the air pressure in the shell 1 to be detected changes or not is detected through the air pressure sensor, if the air pressure is reduced, the glue dispensing position is leaked.
According to the air tightness detection device, the charging port of the shell to be detected can be sealed from the inner side by arranging the inner side sealing mechanism, so that the influence of the outer side sealing on the dispensing position around the charging port is avoided, and the accuracy of air tightness detection is further ensured. The air tightness detection device has the advantages of reasonable structure, good sealing effect and high detection accuracy.
As shown in fig. 3-7, in some embodiments, the connection assembly includes a push rod 42 and a sealing ram 43, the sealing ram 43 is connected with the push rod 42, the inner sealing ring 41 is connected with the sealing ram 43, the carrier 11 is provided with a movable cavity 14 matched with the push rod 42, the push rod 42 is sleeved with a push rod sealing ring 44, and the push rod sealing ring 44 seals between the push rod 42 and the movable cavity 14, so that gas in the movable cavity 14 is prevented from entering the inside of the casing 1 to be tested when the push rod 42 moves. The inner driving assembly 47 can drive the push rod 42 to move in the movable cavity 14, the push rod 42 drives the sealing pressure head 43, and the sealing pressure head 43 drives the inner sealing ring 41 to move, so that the charging port on the shell 1 to be tested is sealed. Alternatively, the inner driving assembly 47 may be a cylinder or an electric cylinder.
Optionally, two push rod sealing rings 44 are sleeved on the push rod 42, and the two push rod sealing rings 44 are matched with each other, so that the sealing performance can be effectively improved.
In one embodiment, the carrier 11 is further provided with a sliding rail 45, and the sealing ram 43 is connected with the sliding rail 45 through a sliding block 46, so that stability of the sealing ram 43 during movement can be ensured, and tightness of the inner sealing ring 41 around the charging port on the inner wall of the casing 1 to be tested is further ensured. Wherein, the inner sealing ring 41 is provided with a sealing plane which is abutted with the periphery of the charging port on the inner wall of the shell 1 to be tested.
Optionally, the carrier 11 is provided with a protruding portion 15, the bottom sealing ring 12 is enclosed on the protruding portion 15, and the bottom sealing ring 12 is provided with a step-type sealing structure, so that the sealing effect of the casing 1 to be tested can be improved.
As shown in fig. 8, in some embodiments, the pressing mechanism 20 further includes a first pressure sensor 222, the pressing block 21 is connected to the pressing driving assembly through the first pressure sensor 222, and the pressing force of the pressing block 21 is precisely controlled through the first pressure sensor 222. Further, the above-mentioned pushing driving assembly 22 further includes a first motor 221, a first lead screw 223, a first lifting seat 224, a driving wheel 225, a driven wheel 226, the driving wheel 225 and the driven wheel 226 are connected through a belt, the first lead screw 223 is connected with the driven wheel 226, the first motor 221 is connected with the driving wheel 225 and drives the driving wheel 225 to rotate, the driving wheel 225 drives the driven wheel 226 to rotate through the belt, the driven wheel 226 drives the first lead screw 223 to rotate, and the first lead screw 223 drives the pressing block 21 to lift through a nut, so as to realize pushing.
As shown in fig. 8-10, in some embodiments, the air tightness detection device further includes a back sealing mechanism 50, where the back sealing mechanism 50 includes a back sealing ring 51 and a back driving assembly, and the back driving assembly is connected to the back sealing ring 51 and drives the back sealing ring 51 to seal a camera hole on the back of the housing 1 to be detected. Further, the back sealing ring 51 is connected with the back driving assembly through the second pressure sensor 522, so that accurate control of the pressing force of the back sealing ring 51 is achieved. The back driving assembly and the pressing driving assembly have the same structural principle and are not repeated here.
In some embodiments, the air tightness detection device further comprises a lifting mechanism 60, the lifting mechanism 60 comprises a lifting plate 61, a guide post 62 and a lifting power source 63, the lifting plate 61 is connected with the guide post 62 through a linear bearing 64, the lifting power source 63 is connected with the lifting plate 61 and drives the lifting plate 61 to lift, and the bottom sealing mechanism 10 and the back sealing mechanism 50 are both arranged on the lifting plate 61. The height of the bottom sealing mechanism 10 and the back sealing mechanism 50 can be adjusted by the elevating mechanism 60. The lifting mechanism 60 plays a role in rough adjustment, and the bottom sealing mechanism 10 and the back sealing mechanism 50 can be accurately adjusted. Alternatively, the lifting power source 63 is a cylinder or an electric cylinder.
In the present invention, the number of outboard drive assemblies is set as desired, and in some embodiments, the number of outboard drive assemblies may be multiple groups. As shown in fig. 11, in some embodiments, the outside driving assembly includes an outside power source 32, a side connector 33, a movable seat 34, and a guide rod 35, the outside sealing ring 31 is disposed on the side connector 33, the guide rod 35 is connected between the side connector 33 and the movable seat 34, a slot in plug-in fit with the guide rod 35 is disposed on the side connector 33 and/or the movable seat 34, a spring 36 is further connected between the side connector 33 and the movable seat, the outside power source 32 can drive the movable seat 34, the movable seat 34 drives the side connector 33, and the side connector 33 drives the outside sealing ring 31 to seal the side hole of the housing 1 to be tested. The spring 36 can play the role of pre-pressing and preventing overpressure, effectively improving the sealing effect. Alternatively, the external power source 32 may be a cylinder or an electric cylinder.
Optionally, a sealing curved surface abutting against the periphery of the upper side hole of the outer wall of the shell 1 to be tested is arranged on the outer sealing ring 31.
As shown in fig. 12, in some embodiments, the air tightness detection apparatus further includes a translation mechanism 70, where the translation mechanism 70 includes a translation rail 71 and a translation driving source 72, a translation bottom plate 80 is disposed on the translation rail 71, and the bottom sealing mechanism 10, the outer sealing mechanism 30, and the inner sealing mechanism 40 are all disposed on the translation bottom plate 80, and the translation driving source 72 may drive the translation bottom plate 80 to below the pressing mechanism 20. The translation mechanism 70 can convey the housing 1 to be tested to the lower part of the pressing mechanism 20, and output the housing 1 to be tested after the detection is completed. Alternatively, the translational drive source 72 is a linear motor, an air cylinder, an electric cylinder, or the like.
In some embodiments, the lifting plate 61 and the translation bottom plate 80 are provided with mutually matched hard limiting columns 90, and the lifting plate 61 and the hard limiting columns 90 on the translation bottom plate 80 can limit the descending height of the lifting plate 61, so that damage to the shell 1 to be tested caused by overpressure is avoided.
The above embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.

Claims (9)

1. An air tightness detection device, characterized by comprising:
the bottom sealing mechanism comprises a carrier, wherein a bottom sealing ring for sealing the bottom of the shell to be tested is arranged on the carrier, an air inlet hole and an air pressure sensor for detecting the air pressure in the shell to be tested are also arranged on the carrier, and the air inlet hole is connected with an air supply device;
the pressing mechanism comprises a pressing block and a pressing driving assembly, and the pressing driving assembly is connected with the pressing block and drives the pressing block to press the shell to be tested on the carrier;
the outer sealing mechanism comprises an outer sealing ring and an outer driving assembly, and the outer driving assembly is connected with the outer sealing ring and drives the outer sealing ring to seal the side hole of the shell to be tested from the outer side;
the inner side sealing mechanism comprises an inner side sealing ring, a connecting component and an inner side driving component, wherein the connecting component penetrates through the carrier from the outer side into the shell to be tested, the inner side sealing ring is connected with the connecting component, the inner side driving component is connected with the connecting component and drives the connecting component, and the connecting component drives the inner side sealing ring to seal a charging port of the shell to be tested from the inner side;
the connecting assembly comprises a push rod and a sealing pressure head, the sealing pressure head is connected with the push rod, the inner sealing ring is connected with the sealing pressure head, a movable cavity matched with the push rod is arranged on the carrier, the push rod is sleeved with the push rod sealing ring, the push rod sealing ring seals between the push rod and the movable cavity, the inner driving assembly can drive the push rod to move in the movable cavity, the push rod drives the sealing pressure head, and the sealing pressure head drives the inner sealing ring to move.
2. The air tightness detection device according to claim 1, wherein a slide rail is further provided on the carrier, and the sealing ram is connected with the slide rail through a slide block.
3. The air tightness detection device of claim 1 further comprising a back sealing mechanism comprising a back sealing ring and a back driving assembly, wherein the back driving assembly is connected with the back sealing ring and drives the back sealing ring to seal a camera hole on the back of the shell to be detected.
4. The air tightness detection device according to claim 3, further comprising a lifting mechanism, wherein the lifting mechanism comprises a lifting plate, a guide post and a lifting power source, the lifting plate is connected with the guide post through a linear bearing, the lifting power source is connected with the lifting plate and drives the lifting plate to lift, and the bottom sealing mechanism and the back sealing mechanism are both arranged on the lifting plate.
5. The air tightness detection device of claim 1 further comprising a translation mechanism, wherein the translation mechanism comprises a translation track and a translation driving source, a translation bottom plate is arranged on the translation track, the bottom sealing mechanism, the outer sealing mechanism and the inner sealing mechanism are all arranged on the translation bottom plate, and the translation driving source can drive the translation bottom plate to be below the pushing mechanism.
6. The air tightness detection device according to claim 1, wherein a protruding portion is provided on the carrier, the bottom sealing ring is provided around the protruding portion, and a step type sealing structure is provided on the bottom sealing ring.
7. The air tightness detection apparatus according to claim 1, wherein the pressing mechanism further comprises a first pressure sensor, and the pressing block is connected to the pressing drive assembly through the first pressure sensor.
8. The air tightness detection device according to claim 1, wherein a sealing plane abutting around the charging port on the inner wall of the housing to be detected is provided on the inner seal ring.
9. The air tightness detection device according to claim 1, wherein the outer sealing ring is provided with a sealing curved surface which is abutted with the periphery of the upper side hole of the outer wall of the shell to be detected.
CN202110742699.9A 2021-06-30 2021-06-30 Air tightness detection equipment Active CN113465841B (en)

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CN113465841B true CN113465841B (en) 2024-04-12

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