CN110132504A - Test device for air tightness and air tightness testing method - Google Patents
Test device for air tightness and air tightness testing method Download PDFInfo
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- CN110132504A CN110132504A CN201910392838.2A CN201910392838A CN110132504A CN 110132504 A CN110132504 A CN 110132504A CN 201910392838 A CN201910392838 A CN 201910392838A CN 110132504 A CN110132504 A CN 110132504A
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- 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
- G01M3/26—Investigating 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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- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides a kind of test device for air tightness and air tightness testing method, device includes air pressure test suite, upper mold and the lower die being oppositely arranged with the upper mold.Test device for air tightness provided by the invention can carry out the airtight test of positive and negative air-pressure, and realize the visualization of test result；Upper and lower mould aligns in real time, and measuring accuracy is high, data redundancy and good relationship；By seal assembly and component contact to be tested, component cosmetic injury to be tested is reduced；The replacement of seal assembly quick release, improves the testing efficiency of test device；It using more dynamic seal structures, is sealed step by step, reduces component stress to be tested, be conducive to debug and analyze technological problems existing for component to be tested；With pre-pressing function, the stability of air-tightness data can be effectively improved.
Description
Technical field
The invention belongs to air tightness test fields, are to be related to a kind of test device for air tightness more specifically.
Background technique
Currently, electronic product has higher requirement to the air-tightness of product.Good air-tightness can be such that electronic product has
There is better waterproof and dustproof performance.Therefore, the air tightness test of electronic product, i.e. electronic product components (can refer in particular to electronics production
The casing of product) air tightness test, it appears it is reasonably necessary.
However, the air tightness test of electronic product, be easy to cause the parts damages of tested electronic product, and test effect
Rate is low, it is difficult in batches to the air tightness test of electronic product components.
Summary of the invention
The purpose of the present invention is to provide a kind of test device for air tightness and air tightness testing methods, to solve the prior art
In be easily damaged electronic product components, the low problem of testing efficiency.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of test device for air tightness, including air pressure are provided
Test suite, upper mold and the lower die being oppositely arranged with the upper mold；
The upper mold includes the first power mechanism, the second power mechanism, third power mechanism, seal assembly and sealing pressing
Axis；The bottom surface of the upper mold is arranged in the seal assembly；
The lower die is provided with the cavity for accommodating component to be tested；
When carrying out air tightness test to the component to be tested being placed in the cavity, first power mechanism
The upper mold is driven, is moved to the upper mold after the predeterminated position above the lower die, the third power mechanism is to institute
It states component to be tested and carries out precompressed, it is mobile towards the direction of the lower die that first power mechanism drives the upper mold to continue,
Until being fitted closely between the upper mold and the seal assembly and the component to be tested and forming a survey for having sealing hole
Try cavity；
The sealing pressing axis is provided with ventilation pipe, and second power mechanism drives the sealing pressing axis contraposition pressure
The sealing hole is closed, is connected to the test cavity with the ventilation pipe by the sealing hole；
The air pressure test suite is connect with the ventilation pipe far from one end of the sealing hole, for measuring the survey
Try the air-tightness data of cavity.
Further, the air pressure test suite includes test module, vacuum generating assembly, pressure adjusting unit, pressure difference
Inductor, mark leakage component；
The test module is connect with the ventilation pipe far from one end of the sealing hole, empty for adjusting the test
The air-tightness data of chamber；
The test module is connect with the vacuum generating assembly, the pressure adjusting unit, mark leakage component respectively；
The differential pressure sensor is set in the test module.
Further, the test device for air tightness further includes upper mold transverse slat and is used to support the collateral of the upper mold transverse slat
Bracer；The upper mold transverse slat is provided with the first hole location and the second hole location, and first power mechanism is installed on first hole location,
Second power mechanism is installed on second hole location；
The upper mold includes guide rod fixing plate；The upper mold transverse slat is additionally provided with first straight line bearing, and described first is straight
Spool is equipped with the first guide rod in holding, and the lower end of first guide rod is fixedly connected on the guide rod fixing plate.
Further, first power mechanism includes first servo motor, the first electric cylinders, the first grip block, the first pressure
Force snesor；
The first servo motor is connect with first electric cylinders, for driving the transmission shaft of first electric cylinders to move；
The transmission shaft of first electric cylinders is fixedly connected with first grip block；
The upper surface of the first pressure sensor is fixedly connected with first grip block, the first pressure sensor
Lower end surface be fixedly connected with the guide rod fixing plate.
Further, the seal assembly includes side pressing block；The upper mold further includes side pressing block mounting plate and support member,
The side pressing block mounting plate is fixedly connected by the support member with the lower end surface of the guide rod fixing plate；The side pressing block
It is mounted on the lower end surface of the side pressing block mounting plate.
Further, second power mechanism further includes the second servo motor, the second electric cylinders, electric cylinders support base, the limit
Sensing chip, stop protective block, pressing shaft seal, second pressure sensor；
Second servo motor is connect with second electric cylinders, for driving the transmission shaft of second electric cylinders to move；
Second electric cylinders are fixed on the second hole location on the upper mold transverse slat by the electric cylinders support base；
The upper surface of the second pressure sensor is fixedly connected with the extension end of the transmission shaft of second electric cylinders, described
The lower end surface of second pressure sensor is fixedly connected with sealing pressing axis；
The limit sensing chip is used to monitor the pressing limit of second electric cylinders；
Inlet suction port and stop protective block, the inlet suction port and the inlet channel are provided on the sealing pressing axis
Connection；
The lower end surface of the sealing pressing axis is provided with axial end installation position, and the pressing shaft seal is installed on the axis
End face installation position.
Further, the third power mechanism includes cylinder, cylinder adapter, prefabricating plate, second straight line bearing, second
Guide rod；
The cylinder and the second straight line bearing are installed on the side pressing block mounting plate；
One end of the cylinder adapter is fixedly connected with the drive shaft of the cylinder, the other end of the cylinder adapter
It is fixedly connected with the prefabricating plate；
Second guide rod is installed in the second straight line bearing, the lower end of second guide rod and the precompressed
Plate is fixedly connected.
Further, the third power mechanism is led including accurate mould group, mould group pushing block, third pressure inductor, third
To bar, third linear bearing；
The precision mould group and the third linear bearing are installed on the side pressing block mounting plate；
The mould group pushing block is connect with the accurate mould group, and the precision mould group can drive the mould group pushing block vertically to move
It is dynamic；
The lower end surface of the mould group pushing block is fixedly connected with the third pressure inductor；The third pressure inductor
Lower end surface is fixedly connected on the prefabricating plate；
The third guide rod is installed in the third linear bearing, the lower end of the third guide rod and the precompressed
Plate is fixedly connected.
Further, the lower die include lower mould bottom plate, mainboard support column, sealing element installation mainboard, lower die primary seal,
Lateral seal module, locating piece；
The sealing element installation mainboard is fixed in the lower mould bottom plate by the mainboard support column；
The lower die primary seal is set on the sealing element installation mainboard, the lower die primary seal and the sealing
Part installation mainboard forms the cavity；
The locating piece is arranged at intervals on the periphery of the lower die primary seal；
The lateral seal module is fixed in the lower mould bottom plate.
Another aspect of the present invention additionally provides a kind of air tightness testing method, has used above-mentioned test device for air tightness pair
The air-tightness of component to be tested is tested, comprising:
The component to be tested is loaded into the cavity of the lower die；
The upper mold is moved to the predeterminated position above the lower die by first power mechanism；
Precompressed is carried out to the component to be tested by the third power mechanism；
It is mobile towards the direction of the lower die that first power mechanism drives the upper mold to continue, until the upper mold and
It is fitted closely between the seal assembly and the component to be tested and forms a test cavity for having sealing hole；
Second power mechanism drives the sealing pressing axis contraposition to press the sealing hole, makes the air pressure test group
Part is connect with the test cavity；
It is tested by air-tightness data of the air pressure test suite to the component to be tested.
The beneficial effect of test device for air tightness and air tightness testing method provided by the invention is: with prior art phase
Than test device for air tightness of the present invention can carry out the airtight test of positive and negative air-pressure, and realize the visualization of test result；Upper and lower mould
Contraposition in real time, measuring accuracy is high, data redundancy and good relationship；By seal assembly and component contact to be tested, reduce
Component cosmetic injury to be tested；The replacement of seal assembly quick release, improves the testing efficiency of test device；It is close using more power
Seal structure is sealed step by step, reduces component stress to be tested, is conducive to debug and analyze technique existing for component to be tested and be asked
Topic；With pre-pressing function, the stability of air-tightness data can be effectively improved.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the main view of test device for air tightness of the embodiment of the present invention；
Fig. 2 is the perspective view that the embodiment of the present invention includes each component of upper mold；
Fig. 3 is the main view of sealing of embodiment of the present invention pressing axis and the second power mechanism；
Fig. 4 is the structural decomposition diagram of the first power mechanism of the embodiment of the present invention；
Fig. 5 is the structural decomposition diagram of the first power mechanism of embodiment of the present invention another exemplary；
Fig. 6 is the perspective view of each component of air pressure of embodiment of the present invention test suite；
Fig. 7 is the sectional view that the embodiment of the present invention tests cavity and sealing pressing axis；
Fig. 8 is the main view of third of embodiment of the present invention power mechanism；
Fig. 9 is the main view of another embodiment of the present invention third power mechanism；
Figure 10 is the perspective view of each component of lower die of the embodiment of the present invention.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Also referring to Fig. 1-3, Fig. 1 is the main view of test device for air tightness of the present invention.Fig. 2 is to include each portion of upper mold 10
The perspective view of part.Fig. 3 is the main view of sealing pressing axis 51 and the second power mechanism 12.Now to air-tightness provided by the invention
Test device is illustrated.Test device for air tightness is oppositely arranged including air pressure test suite, upper mold 10 and with upper mold 10
Lower die 20；
Upper mold 10 includes the first power mechanism 11, the second power mechanism 12, third power mechanism 13, seal assembly and sealing
Press axis 51；The bottom surface of upper mold 10 is arranged in seal assembly；
Lower die 20 is provided with the cavity for accommodating component to be tested；
When carrying out air tightness test to the component to be tested placed in the cavities, the first power mechanism 11 drives upper mold
10, it is moved to upper mold 10 after the predeterminated position of 20 top of lower die, 13 part under test of third power mechanism carries out precompressed,
It is mobile towards the direction of lower die 20 that first power mechanism 11 drives upper mold 10 to continue, until upper mold 10 and seal assembly with it is to be tested
It is fitted closely between component and forms a test cavity 53 for having sealing hole；
Sealing pressing axis 51 is provided with ventilation pipe, and the second power mechanism 12 is with the dynamic sealing pressing contraposition pressing sealing of axis 51
Hole is connected to test cavity 53 with ventilation pipe by sealing hole；
Air pressure test suite and ventilation pipe are connected far from one end of sealing hole, for measuring the air-tightness of test cavity 53
Data.
In the present embodiment, air-tightness of the test device for air tightness for part under test is tested.Here, to be measured
Examination component can refer to mobile phone component or the casing of other electronic products.Particularly, mobile phone component can refer to not comprising including screen
Mobile phone main frame structure (contain rear shell).Air pressure test suite contains necessary pressure test component, can be built-in or external
Gas boosting/decompression member.Lower die 20 is for loading component to be tested, and upper mold 10 is then equipped with necessary seal assembly.When
When upper mold 10 and lower die 20 are fitted closely together, then the test cavity 53 to be tested of opposing seal can be formed.Lower die 20
Position can be fixed, and the position of upper mold 10 is then to rely on the movement of the first power mechanism 11.In order to realize preferably
Test effect, test device for air tightness are also provided with third power mechanism 13, realize the precompressed of part under test.Precompressed is effective
Improve the stability of the air-tightness data of component to be tested.
In test cavity 53, sealing hole can be set.The sealing hole can pass through necessary gas connection conduit and gas
Test suite connection is pressed, realizes that the air-tightness data to test cavity 53 measure.Particularly, it is provided with sealing pressing axis 51
It is connected to sealing hole.In measurement, the contraposition pressing sealing hole of axis 51 is pressed with dynamic sealing by the second power mechanism 12, makes to test
Cavity 53 is connected to by sealing hole with the ventilation pipe of sealing pressing axis 51, and the other end and air pressure test suite of ventilation pipe connect
It is logical.
Specifically, test device for air tightness further includes upper mold transverse slat 41 and the collateral bracer for being used to support upper mold transverse slat 41
42；Upper mold transverse slat 41 is provided with the first hole location and the second hole location, and the first power mechanism 11 is installed on the first hole location, the second engine
Structure 12 is installed on the second hole location.
It may be provided with 301 mounting plate 30 of test module in upper mold transverse slat 41.Air pressure test suite can be set in test mould
On 301 mounting plate 30 of block.
As shown in figure 4, Fig. 4 is the structural decomposition diagram of the first power mechanism 11.Upper mold 10 includes guide rod fixing plate
114；Upper mold transverse slat 41 is additionally provided with first straight line bearing 118, and the first guide rod 119 is equipped in first straight line bearing 118, the
The lower end of one guide rod 119 is fixedly connected on guide rod fixing plate 114.
First power mechanism 11 includes first servo motor 110, the first electric cylinders 111, the first grip block 112, first pressure
Sensor 113；
First servo motor 110 is connect with the first electric cylinders 111, for driving the transmission shaft of the first electric cylinders 111 to move；
The transmission shaft of first electric cylinders 111 is fixedly connected with the first grip block 112；
The upper surface of first pressure sensor 113 is fixedly connected with the first grip block 112, first pressure sensor 113
Lower end surface is fixedly connected with guide rod fixing plate 114.
In the present embodiment, the first power mechanism 11 connects by the way that first pressure sensor 113 and guide rod fixing plate 114 are fixed
It connects.The transmission shaft of first electric cylinders 111 can be movable in a vertical direction, and then guide rod fixing plate 114 is driven to become close or remote from lower die
20.For the moving direction of fixed guide pole fixed plate 114, make upper mold 10 and 20 exactitude position of lower die, it can be solid in guide rod
At least one the first guide rod 119 is fixedly connected on fixed board 114.Upper mold transverse slat 41 is provided with quantity and the first guide rod 119
The identical first straight line bearing 118 of quantity, the first guide rod 119 is installed in first straight line bearing 118, the first guide rod
119 lower end is fixedly connected on guide rod fixing plate 114.When guide rod fixing plate 114 moves in the vertical direction, the first guide rod
119 slide up and down relative to first straight line bearing 118.
Specifically, seal assembly includes side pressing block；Upper mold 10 further includes side pressing block mounting plate 116 and support member, side pressure
Block mounting plate 116 is fixedly connected by support member with the lower end surface of guide rod fixing plate 114；Side pressing block is mounted on side pressing block peace
The lower end surface of loading board 116.
In the lower section of guide rod fixing plate 114, side pressing block mounting plate 116 can be fixedly connected with.Guide rod fixing plate 114
It is connect between side pressing block mounting plate 116 by support member.Support member has certain altitude, such as can be support column 117.
In some cases, preload component mounting plate 115 can be set between guide rod fixing plate 114 and side pressing block mounting plate 116.
Seal assembly is set to the lower end surface of side pressing block mounting plate 116.Seal assembly can be by one or more side pressing block groups
At.The quantity of side pressing block can be determined according to the structure of component to be tested.As shown in figure 4, being equipped with side pressing block 502, side pressing block altogether
503, side pressing block 504, side pressing block 505, side pressing block 506, side pressing block 507, side pressing block 508 totally seven side pressing blocks.Side pressing block is used for
Close the hole location (such as charging hole, earpiece holes) reserved on component to be tested.A strata urethane or fourth has can be set in side pressing block
The Soft Roll glue-line of fine rubber material.Side pressing block mounting plate 116 and side pressing block may be provided with mutually matched pin hole, and pass through pin
Both fixed position.It can be set imitation profile in the lower end of side pressing block, when test, imitation profile connects with member in tight to be tested
Touching, can effectively prevent weighing component to be tested wounded and improve bonding accurcy.
In some embodiments, pressing axis limited block 501 can be also equipped on preload component mounting plate 115.
Preload component mounting plate 115 has a mounting groove, and pressing axis limited block 501 is securedly mounted in the mounting groove.Press axis limit
Block 501 can be made of carbon steel material, and have chromed ornament.The groove width and pressing 501 width of axis limited block of specific mounting groove
Matching, so that pressing axis limited block 501 has preferable limit effect.Press axis limited block 501 can to sealing pressing axis 51 into
Row rotary stopper causes the pressing downwards of sealing pressing axis 51 not generate rotation.
As shown in figure 5, Fig. 5 is the structural decomposition diagram of 11 another exemplary of the first power mechanism.Side pressing block can be used
Combine the combination that mounting plate 1151 replaces preload component mounting plate 115 and side pressing block mounting plate 116.And in the example of hgure 5, branch
Support part part can be replaced by supporting block 1171.
Further, as shown in fig. 6, Fig. 6 is the perspective view of each component of air pressure test suite.Air pressure test suite includes surveying
Die trial block 301, vacuum generating assembly 303, pressure adjusting unit 302, differential pressure sensor, mark leakage component 304；
Test module 301 and ventilation pipe are connected far from one end of sealing hole, for adjusting the air-tightness of test cavity 53
Data；
Test module 301 is connect with vacuum generating assembly 303, pressure adjusting unit 302, mark leakage component 304 respectively；
Differential pressure sensor is set in test module 301.
In the present embodiment, test module 301, vacuum generating assembly 303, pressure adjusting unit 302, mark leakage component 304 can
It is installed on the side of module mounting plate.In order to guarantee stability of the air pressure test suite on module mounting plate, can pacify in module
Reinforcing rib 307 is arranged in the other side of loading board.Reinforcing rib 307 can be made of stainless steel material.Module mounting plate can be by aluminium alloy
Material is made.
Test module 301 is used to measure the air-tightness data of test cavity 53.
Pressure adjusting unit 302 is used for the air pressure of fine adjustment air supply source, and the gas supply test module 301 after adjusting makes
With guarantee test module 301 works normally.
The negative pressure feeding test module 301 that vacuum generating assembly 303 generates uses.In some cases, it is desirable to use negative pressure
The air-tightness data of test cavity 53 are tested.
Mark leakage component 304 is an external part, is demarcated for the test data to test module 301.Such as, it marks
Leakage component 304 has a small hole, and when gas passes through test module 301, the leakage of this mark leakage component 304 can be detected
Numerical value, the numerical value can finally calculate the volume of test cavity 53 with the leakage numeric ratio pair of test module 301, realize volume
Mark leakage function.Mark leakage component 304 is mountable to be installed on module mounting plate by mark leakage bracket 305.
Differential pressure sensor is built in inside test module 301, for the barometric information of test chamber air pressure.Differential pressure sensor
Quantity can be multiple groups.
Module mounting plate is furnished with line concentration guide rail 306, and the wiring for fixing each component (can be power supply line, be also possible to
Gas connection pipeline), modularization, conveniently fast disassembling replacement are carried out to the wiring of each component.Line concentration guide rail 306 can be by aluminium alloy
Material is made.
It further, is the main view of the second power mechanism 12 comprising sealing pressing axis 51 referring to Fig. 3, Fig. 3.Second is dynamic
Force mechanisms 12 further include the second servo motor 120, the second electric cylinders 121, electric cylinders support base 122, limit sensing chip 124, limit guarantor
Protecting block 125, pressing shaft seal 52, second pressure sensor 123；
Second servo motor 120 is connect with the second electric cylinders 121, for driving the transmission shaft of the second electric cylinders 121 to move；
Second electric cylinders 121 are fixed on the second hole location on upper mold transverse slat 41 by electric cylinders support base 122；
The upper surface of second pressure sensor 123 is fixedly connected with the extension end of the transmission shaft of the second electric cylinders 121, the second pressure
The lower end surface of force snesor 123 is fixedly connected with sealing pressing axis 51；
Limit sensing chip 124 is used to monitor the pressing limit of the second electric cylinders 121；
Inlet suction port 511 and stop protective block 125, inlet suction port 511 and inlet channel are provided on sealing pressing axis 51
Connection；
The lower end surface of sealing pressing axis 51 is provided with axial end installation position, and pressing shaft seal 52 is installed on axial end installation
Position.
In the present embodiment, the second servo motor 120 is connected with 121 one end of the second electric cylinders, constitutes the second power mechanism 12
Driving source.It is provided with threaded hole on one side in electric cylinders support base 122, the second electric cylinders 121 are installed in threaded hole.Electric cylinders support
The another side of seat 122 is threadedly secured to upper mold transverse slat 41.Electric cylinders support base 122 can be made of carbon steel material, and have plating
Chromium decoration.
123 upper surface of second pressure sensor is fixedly connected with the extension end of the transmission shaft of the second electric cylinders 121, for real-time
Monitor the pressure force that the second power mechanism 12 applies seal assembly.
Limit sensing chip 124 is used to monitor the pressing limit of the second electric cylinders 121.Limit sensing chip 124 can be by stainless steel
Material is made.
The lower end surface of second pressure sensor 123 is fixedly connected with sealing pressing axis 51.One end of sealing pressing axis 51 is set
It is equipped with inlet suction port 511 and stop protective block 125.Inlet channel built in sealing pressing axis 51 is connected to inlet suction port 511.
It is additionally provided with stop protective block 125 close to one end of second pressure sensor 123 in sealing pressing axis 51, limit is protected
Protecting block 125 is used to limit the pressing of the second electric cylinders 121 firmly.It is provided with and stop protective block 125 in guide rod fixing plate 114
The hole location of adaptation, to realize the position-limiting action of stop protective block 125.
The lower end surface of sealing pressing axis 51 is provided with axial end installation position, which can be in the form of slot.Press axis
Sealing element 52 is installed on axial end installation position.The outer layer of pressing shaft seal 52 can be made of nitrile rubber or silica gel material.Axis
End face installation position has certain depth, keeps pressing shaft seal 52 not easily to fall off.
When test, the second electric cylinders 121 driving sealing pressing axis 51 keeps the pressing pressing of shaft seal 5245 contact empty in test
In the reserved sealing hole of chamber 53, the sealing to test cavity 53 is realized.
It is the sectional view for testing cavity 53 and sealing pressing axis 51 referring to Fig. 7, Fig. 7.Inlet suction port 511 and sealing pressing axis
51 inlet channel connection.Pressing shaft seal 52 presses the sealing hole of test cavity 53.It can be empty from 511 pairs of tests of inlet suction port
Chamber 53 is inflated or is evacuated, to measure the air-tightness data of component to be tested.
Further, as shown in figure 8, Fig. 8 is the main view of an embodiment third power mechanism 13.Third power mechanism 13
Including cylinder 131, cylinder adapter 132, prefabricating plate 133, second straight line bearing 135, the second guide rod 134；
Cylinder 131 and second straight line bearing 135 are installed on side pressing block mounting plate 116；
One end of cylinder adapter 132 is fixedly connected with the drive shaft of cylinder 131, the other end of cylinder adapter 132 with
Prefabricating plate 133 is fixedly connected；
Second guide rod 134 is installed in second straight line bearing 135, and the lower end of the second guide rod 134 and prefabricating plate 133 are solid
Fixed connection.
In the present embodiment, if the top of side pressing block mounting plate 116 is additionally provided with preload component mounting plate 115, cylinder 131
It is mountable on preload component mounting plate 115 with second straight line bearing 135.Cylinder 131 is fixed on preload component by screw hole
(in some embodiments, preload component mounting plate 115 and side pressing block mounting plate 116 can be same installation to mounting plate 115
Plate) on.The axis extension end of cylinder 131 is connected with cylinder adapter 132.Cylinder adapter 132 can be made of carbon steel material, and
With chromed ornament.The other end of cylinder adapter 132 is mounted on the upper surface of prefabricating plate 133.Prefabricating plate 133 can be by aluminium alloy
Material is made.The upper surface of prefabricating plate 133 is further fixed on equipped with the second guide rod 134.The number of second guide rod 134 can be
Two.Second guide rod 134 can be made of stainless steel material.Second guide rod 134 is oriented to by second straight line bearing 135
Limit.The number of second straight line bearing 135 and the number of the second guide rod 134 are consistent.
The lower end surface of prefabricating plate 133 is provided with mounting groove, for installing pre- laminate seal 136 and pre- laminate seal 137.In advance
Laminate seal 136 and pre- laminate seal 137 belong to a part of seal assembly.It is carried out in 133 part under test of prefabricating plate pre-
When pressure, by pre- laminate seal 136 and pre- laminate seal 137 and component contact to be tested.Pre- laminate seal 136 and pre- laminate seal
137 outer layer can be made of nitrile rubber or silica gel material.Here, prefabricating plate 133 can play the role of two kinds, be respectively as follows: one
Be when effectivelying prevent component feeding to be tested because it is seating unevenly it is whole cause test inaccuracy；Second is that inflating or taking out in test cavity 53
When gas, component to be tested by stretching force inwardly or outwardly, prefabricating plate 133 can offset the tension that component to be tested is subject to or
Pulling force prevents component to be tested from generating excessive deformation, damages component to be tested, reduces the unstability of air-tightness DATA REASONING.
Further, as shown in figure 9, Fig. 9 is the main view of another embodiment third power mechanism 13.Third power mechanism
13 include accurate mould group 1301, mould group pushing block 1302, third pressure inductor 1308, third guide rod 1303, third linear axis
Hold 1304；
Accurate mould group 1301 is installed on side pressing block mounting plate 116 with third linear bearing 1304；
Mould group pushing block 1302 is connect with accurate mould group 1301, and accurate mould group 1301 can vertically be moved with dynamic model group pushing block 1302
It is dynamic；
The lower end surface of mould group pushing block 1302 is fixedly connected with third pressure inductor 1308；Third pressure inductor 1308
Lower end surface is fixedly connected on prefabricating plate 133；
Third guide rod 1303 is installed in third linear bearing 1304, the lower end of third guide rod 1303 and prefabricating plate
133 are fixedly connected.
In the present embodiment, mould group pushing block 1302 is connected with accurate mould group 1301, and accurate mould group 1301 can be pushed away with dynamic model group
Block 1302 vertically moves.Mould group pushing block 1302 can be made of aluminum alloy materials.The upper surface of third pressure sensor 1308 and mould
The lower end surface of group pushing block 1302 is fixedly connected.The lower end surface of third pressure sensor 1308 and the upper surface of prefabricating plate 133 are fixed
Connection.Prefabricating plate 133 is provided with third guide rod 1303.The number of third guide rod 1303 can be three.Third guide rod
1303 are interspersed in third linear bearing 1304, are oriented to and are slided by third linear bearing 1304.One end of air intake lever 13091 is fixed
In the upper surface of side pressing block mounting plate 116, the other end is connect with air inlet elbow 1309, is entered for gas source.Prefabricating plate 133 is arranged
In the lower section of side pressing block mounting plate 116.Prefabricating plate 133 is provided with sealing element mounting groove, for installing pre- laminate seal 1307.Essence
Close mould group 1301 drives 133 part under test of prefabricating plate to carry out precompressed.
Further, referring to Fig.1 0, Figure 10 be each component of lower die perspective view.Lower die 20 includes lower mould bottom plate 201, mainboard
Support column 202, sealing element install mainboard 203, lower die primary seal 209, lateral seal module 204, locating piece 208；
Sealing element installation mainboard 203 is fixed in lower mould bottom plate 201 by mainboard support column 202；
Lower die primary seal 209 is set on sealing element installation mainboard 203, and lower die primary seal 209 and sealing element are installed
Mainboard 203 forms cavity；
Locating piece 208 is arranged at intervals on the periphery of lower die primary seal 209；
Lateral seal module 204 is fixed in lower mould bottom plate 201.
In the present embodiment, lower die 20 includes lower mould bottom plate 201, mainboard support column 202, sealing element installation mainboard 203, lower die
Primary seal 209, lateral seal module 204, locating piece 208.The number of lateral seal module 204 be it is multiple, for seal to
The lateral side slot of test component prevents component to be tested from leaking from side to side slot, leads to not to form test cavity 53.Each side
Seal modules 204 are provided with corresponding sealing element, by the compression of prefabricating plate 133, realize optimal sealing effect.
Sealing element installation mainboard 203 is fixed in lower mould bottom plate 201 by mainboard support column 202.Mainboard support column 202 can
It is made of No. 15 steel.The number of mainboard support column 202 can be 4.Four mainboard support columns 202 are contour, so that sealing element is pacified
Dress mainboard 203 is in horizontal installation site.
Sealing element installation mainboard 203 is provided with sealing element mounting groove.Lower die primary seal 209 is installed on sealing element mounting groove
It is interior.Lower die primary seal 209 and sealing element installation mainboard 203 form the cavity for loading component to be tested.
Locating piece 208 is arranged at intervals on the periphery of lower die primary seal 209.Lateral seal module 204 is fixed on lower die bottom
On plate 201.
Sealing element installation mainboard 203 is provided with locating piece 208, and part under test is positioned, and component to be tested is prevented
Generate lateral shift dislocation, and then seal failure.
Sealing element installs the lower die contraposition column 205 on mainboard 203 and 10 alignment pin of upper mold of upper mold 10 cooperates contraposition, makes
The contraposition in real time of lower die 20 is for improving sealing element bonding accurcy.
Horizontal adjustment block 207 on sealing element installation mainboard 203 makes lower die 20 and the mutual level-off of upper mold 10, keeps sealing element each
The decrement in direction is consistent the service life for effectively improving sealing element and sealing stability.
It may be provided with barcode scanning component in lower mould bottom plate 201, and be provided with transparent window 206 on sealing element installation mainboard 203.
Barcode scanning can be carried out to the component to be tested being placed on transparent window 206 by barcode scanning component.
Another aspect of the present invention additionally provides a kind of air tightness testing method, has used above-mentioned test device for air tightness pair
The air-tightness of component to be tested is tested, comprising:
Component to be tested is loaded into the cavity of lower die 20；
Upper mold 10 is moved to the predeterminated position of 20 top of lower die by the first power mechanism 11；
Precompressed is carried out by 13 part under test of third power mechanism；
It is mobile towards the direction of lower die 20 that first power mechanism 11 drives upper mold 10 to continue, until upper mold 10 and seal assembly
It is fitted closely between component to be tested and forms a test cavity 53 for having sealing hole；
Second power mechanism 12 makes air pressure test suite and test cavity with the dynamic sealing pressing contraposition pressing sealing hole of axis 51
53 connections；
It is tested by the air-tightness data of air pressure test suite part under test.
In the present embodiment, due to the effect of the first power mechanism 11, the second power mechanism 12, third power mechanism 13, make
Upper mold 10 (including the seal assembly installed in upper mold 10) and component to be tested form stable test cavity 53.Test module
301 can accurately measure the air-tightness data of test cavity 53, this air-tightness data is the air-tightness data of component to be tested.
In one example, the parameter of test module 301 includes:
Supply gas source: 0.5Mpa~0.7Mpa；
Test gas source: air；
Measuring air pressure: -0.6bar~0.6bar；
Test environment: 1W grades of dust-free workshop；
Airtight measuring accuracy: 0.001sccm；
Testing time: 90s.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. test device for air tightness, which is characterized in that be oppositely arranged including air pressure test suite, upper mold and with the upper mold
Lower die；
The upper mold includes the first power mechanism, the second power mechanism, third power mechanism, seal assembly and sealing pressing axis；
The bottom surface of the upper mold is arranged in the seal assembly；
The lower die is provided with the cavity for accommodating component to be tested；
When carrying out air tightness test to the component to be tested being placed in the cavity, first power mechanism is driven
The upper mold is moved to the upper mold after the predeterminated position above the lower die, the third power mechanism to it is described to
Test component carries out precompressed, and it is mobile towards the direction of the lower die that first power mechanism drives the upper mold to continue, until
It is fitted closely between the upper mold and the seal assembly and the component to be tested and forms a test sky with sealing hole
Chamber；
The sealing pressing axis is provided with ventilation pipe, and second power mechanism drives the sealing pressing axis contraposition pressing institute
Sealing hole is stated, is connected to the test cavity with the ventilation pipe by the sealing hole；
The air pressure test suite is connect with the ventilation pipe far from one end of the sealing hole, empty for measuring the test
The air-tightness data of chamber.
2. test device for air tightness as described in claim 1, which is characterized in that the air pressure test suite includes test mould
Block, vacuum generating assembly, pressure adjusting unit, differential pressure sensor, mark leakage component；
The test module is connect with the ventilation pipe far from one end of the sealing hole, for adjusting the test cavity
Air-tightness data；
The test module is connect with the vacuum generating assembly, the pressure adjusting unit, mark leakage component respectively；
The differential pressure sensor is set in the test module.
3. test device for air tightness as described in claim 1, which is characterized in that the test device for air tightness further includes upper mold
Transverse slat and the collateral bracer for being used to support the upper mold transverse slat；The upper mold transverse slat is provided with the first hole location and the second hole location, institute
It states the first power mechanism and is installed on first hole location, second power mechanism is installed on second hole location；
The upper mold includes guide rod fixing plate；The upper mold transverse slat is additionally provided with first straight line bearing, the first straight line axis
The first guide rod is installed in holding, the lower end of first guide rod is fixedly connected on the guide rod fixing plate.
4. test device for air tightness as claimed in claim 3, which is characterized in that first power mechanism includes the first servo
Motor, the first electric cylinders, the first grip block, first pressure sensor；
The first servo motor is connect with first electric cylinders, for driving the transmission shaft of first electric cylinders to move；
The transmission shaft of first electric cylinders is fixedly connected with first grip block；
The upper surface of the first pressure sensor is fixedly connected with first grip block, under the first pressure sensor
End face is fixedly connected with the guide rod fixing plate.
5. test device for air tightness as claimed in claim 3, which is characterized in that the seal assembly includes side pressing block；It is described
Upper mold further includes side pressing block mounting plate and support member, and the side pressing block mounting plate passes through the support member and the guide rod
The lower end surface of fixed plate is fixedly connected；The side pressing block is mounted on the lower end surface of the side pressing block mounting plate.
6. test device for air tightness as claimed in claim 3, which is characterized in that second power mechanism further includes second watching
Take motor, the second electric cylinders, electric cylinders support base, limit sensing chip, stop protective block, pressing shaft seal, second pressure sensor；
Second servo motor is connect with second electric cylinders, for driving the transmission shaft of second electric cylinders to move；
Second electric cylinders are fixed on the second hole location on the upper mold transverse slat by the electric cylinders support base；
The upper surface of the second pressure sensor is fixedly connected with the extension end of the transmission shaft of second electric cylinders, and described second
The lower end surface of pressure sensor is fixedly connected with sealing pressing axis；
The limit sensing chip is used to monitor the pressing limit of second electric cylinders；
Inlet suction port and stop protective block are provided on the sealing pressing axis, the inlet suction port and the inlet channel connect
It is logical；
The lower end surface of the sealing pressing axis is provided with axial end installation position, and the pressing shaft seal is installed on the axial end
Installation position.
7. test device for air tightness as claimed in claim 5, which is characterized in that the third power mechanism includes cylinder, gas
Cylinder adapter, prefabricating plate, second straight line bearing, the second guide rod；
The cylinder and the second straight line bearing are installed on the side pressing block mounting plate；
One end of the cylinder adapter is fixedly connected with the drive shaft of the cylinder, the other end of the cylinder adapter and institute
Prefabricating plate is stated to be fixedly connected；
Second guide rod is installed in the second straight line bearing, and the lower end of second guide rod and the prefabricating plate are solid
Fixed connection.
8. test device for air tightness as claimed in claim 7, which is characterized in that the third power mechanism includes accurate mould
Group, mould group pushing block, third pressure inductor, third guide rod, third linear bearing；
The precision mould group and the third linear bearing are installed on the side pressing block mounting plate；
The mould group pushing block is connect with the accurate mould group, and the precision mould group can drive the mould group pushing block to vertically move；
The lower end surface of the mould group pushing block is fixedly connected with the third pressure inductor；The lower end of the third pressure inductor
Face is fixedly connected on the prefabricating plate；
The third guide rod is installed in the third linear bearing, and the lower end of the third guide rod and the prefabricating plate are solid
Fixed connection.
9. test device for air tightness as described in claim 1, which is characterized in that the lower die includes lower mould bottom plate, mainboard branch
Dagger, sealing element install mainboard, lower die primary seal, lateral seal module, locating piece；
The sealing element installation mainboard is fixed in the lower mould bottom plate by the mainboard support column；
The lower die primary seal is set on the sealing element installation mainboard, and the lower die primary seal and the sealing element are pacified
Dress mainboard forms the cavity；
The locating piece is arranged at intervals on the periphery of the lower die primary seal；
The lateral seal module is fixed in the lower mould bottom plate.
10. a kind of air tightness testing method, which is characterized in that use the test device for air tightness of claim 1-9 any one
The air-tightness of part under test is tested, comprising:
The component to be tested is loaded into the cavity of the lower die；
The upper mold is moved to the predeterminated position above the lower die by first power mechanism；
Precompressed is carried out to the component to be tested by the third power mechanism；
It is mobile towards the direction of the lower die that first power mechanism drives the upper mold to continue, until the upper mold and described
It is fitted closely between seal assembly and the component to be tested and forms a test cavity for having sealing hole；
Second power mechanism drives the sealing pressing axis contraposition to press the sealing hole, make the air pressure test suite and
The test cavity connection；
It is tested by air-tightness data of the air pressure test suite to the component to be tested.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567646A (en) * | 2019-10-08 | 2019-12-13 | 华勤通讯技术有限公司 | air tightness test fixture and air tightness test device |
| CN111623929A (en) * | 2020-06-23 | 2020-09-04 | 苏州祥龙嘉业电子科技股份有限公司 | Airtight seal test equipment |
| CN113654740A (en) * | 2021-08-09 | 2021-11-16 | 苏州佳祺仕信息科技有限公司 | Detection system, equipment and method of earphone shell |
| CN114088556A (en) * | 2021-11-01 | 2022-02-25 | 清华大学 | Sealing element testing device |
| CN114636567A (en) * | 2022-03-08 | 2022-06-17 | 奇瑞汽车股份有限公司 | Collision device for automobile test |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010210505A (en) * | 2009-03-11 | 2010-09-24 | Aqua J:Kk | Leak testing apparatus |
| 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 |
| CN103712751A (en) * | 2013-12-19 | 2014-04-09 | 怡得乐电子(杭州)有限公司 | Adaptive sealing test device applicable to multi-product special-shaped cavities |
| CN206056885U (en) * | 2016-08-25 | 2017-03-29 | 群光电子(苏州)有限公司 | Air tightness test machine |
| CN107144406A (en) * | 2017-06-30 | 2017-09-08 | 重庆华达汽车配件制造有限公司 | Airtight detecting apparatus |
| CN208847428U (en) * | 2018-08-22 | 2019-05-10 | 大族激光科技产业集团股份有限公司 | A kind of Mobile phone screen sealing test jig |
-
2019
- 2019-05-13 CN CN201910392838.2A patent/CN110132504B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010210505A (en) * | 2009-03-11 | 2010-09-24 | Aqua J:Kk | Leak testing apparatus |
| 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 |
| CN103712751A (en) * | 2013-12-19 | 2014-04-09 | 怡得乐电子(杭州)有限公司 | Adaptive sealing test device applicable to multi-product special-shaped cavities |
| CN206056885U (en) * | 2016-08-25 | 2017-03-29 | 群光电子(苏州)有限公司 | Air tightness test machine |
| CN107144406A (en) * | 2017-06-30 | 2017-09-08 | 重庆华达汽车配件制造有限公司 | Airtight detecting apparatus |
| CN208847428U (en) * | 2018-08-22 | 2019-05-10 | 大族激光科技产业集团股份有限公司 | A kind of Mobile phone screen sealing test jig |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567646A (en) * | 2019-10-08 | 2019-12-13 | 华勤通讯技术有限公司 | air tightness test fixture and air tightness test device |
| CN111623929A (en) * | 2020-06-23 | 2020-09-04 | 苏州祥龙嘉业电子科技股份有限公司 | Airtight seal test equipment |
| CN111623929B (en) * | 2020-06-23 | 2024-09-06 | 苏州祥龙嘉业电子科技股份有限公司 | Hermetic seal test equipment |
| CN113654740A (en) * | 2021-08-09 | 2021-11-16 | 苏州佳祺仕信息科技有限公司 | Detection system, equipment and method of earphone shell |
| CN114088556A (en) * | 2021-11-01 | 2022-02-25 | 清华大学 | Sealing element testing device |
| CN114088556B (en) * | 2021-11-01 | 2023-05-16 | 清华大学 | Sealing element testing device |
| CN114636567A (en) * | 2022-03-08 | 2022-06-17 | 奇瑞汽车股份有限公司 | Collision device for automobile test |
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|---|---|
| CN110132504B (en) | 2020-12-25 |
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