WO2021232465A1 - 气密性测试装置及其测试方式 - Google Patents

气密性测试装置及其测试方式 Download PDF

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Publication number
WO2021232465A1
WO2021232465A1 PCT/CN2020/092832 CN2020092832W WO2021232465A1 WO 2021232465 A1 WO2021232465 A1 WO 2021232465A1 CN 2020092832 W CN2020092832 W CN 2020092832W WO 2021232465 A1 WO2021232465 A1 WO 2021232465A1
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WIPO (PCT)
Prior art keywords
clamp
axis
test
air
cavity
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PCT/CN2020/092832
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English (en)
French (fr)
Inventor
姜德志
余迪超
吴海生
李波
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广州阿普顿自动化系统有限公司
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Application filed by 广州阿普顿自动化系统有限公司 filed Critical 广州阿普顿自动化系统有限公司
Publication of WO2021232465A1 publication Critical patent/WO2021232465A1/zh

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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

Definitions

  • the invention relates to the technical field of airtightness testing equipment, in particular to an airtightness testing device and a testing method thereof.
  • Smart watches have built-in intelligent systems, equipped with smart phone systems and connected to the Internet to achieve multi-functions. They can synchronize calls, text messages, emails, photos, music, etc. in mobile phones. Therefore, smart watches are becoming more and more popular among consumers.
  • Smart watches are becoming more and more popular among consumers.
  • the invention patent with application number CN201611238296.6 discloses an air-tightness detection jig.
  • the lower pressure mechanism, the carrier is equipped with a lower sealed cavity; the lower sealed cavity includes sealing parts, and the sealed parts are equipped with products and a side follower mechanism that can seal the right side of the product; the lower pressure mechanism
  • the bottom of the lower pressure plate is equipped with a sealing top plate; the bottom of the sealing top plate is equipped with an upper sealing cavity that can seal the lower sealing cavity;
  • the seal for product sealing seals the bottom of the top plate and is located at the position of the upper sealing cavity, and is equipped with an upper follower mechanism that cooperates with the side follower mechanism and pushes the side follower mechanism to move.
  • the detection jig with this structure still has the following problems:
  • the driving device used to drive the movement of the carrier includes a motor fixing plate and a screw fixing seat installed at the bottom of the bottom plate, and a driving motor installed on the motor fixing plate ,
  • the driving wheel installed on the main shaft of the driving motor, the screw rod installed on the screw fixing seat and the driven wheel installed with the end of the screw rod, the driving wheel and the driven wheel are connected by a belt, and the screw rod is matched and installed
  • this kind of driving device has a complicated structure and takes up a large space.
  • the device does not have a buffering effect during the movement of the carrier, especially when the movement speed is too fast, it is easy to cause the product to shake or shift in the sealed cavity, which will affect the test effect. Accuracy, and the heating of the motor will compensate for the air leakage pressure drop, which will seriously affect the reliability of the tightness test.
  • one of the objectives of the present invention is to provide an air tightness test device, which has a compact structure, reasonable layout, convenient disassembly and assembly, good reliability, and can be adapted to other products by replacing the upper and lower clamps.
  • an air tightness test device which has a compact structure, reasonable layout, convenient disassembly and assembly, good reliability, and can be adapted to other products by replacing the upper and lower clamps.
  • it also has the characteristics of good stability, good test accuracy, and high test efficiency.
  • the second object of the present invention is to provide a test method for the air tightness test device, which has the characteristics of convenient operation and high test efficiency.
  • an air tightness test device includes a frame, on which a horizontal workbench is arranged, the length direction of the workbench is the X-axis direction, and the workbench The width direction of the workbench is the Y-axis direction, and the height direction of the workbench is the Z-axis direction; it is characterized in that: the workbench is provided with at least one set of airtightness testing mechanism, and the airtightness testing mechanism includes a fixed installation at The mounting plate on the workbench, the Y-axis sliding mechanism, the Z-axis lifting mechanism, and the sealing fixture; the Y-axis sliding mechanism includes a guide rail, a sliding seat and a rodless cylinder, and the guide rail is fixedly mounted on the Y-axis direction On the mounting plate, the bottom surface of the sliding seat is provided with a sliding block that is slidably matched with the guide rail; the rodless cylinder is fixedly mounted on the mounting plate
  • the guide rail includes two guide rails arranged in parallel along the Y-axis direction; correspondingly, the number of the sliders is two, and each slider slides with one of the guide rails.
  • the bottom of the sliding seat is provided with a stopper extending downward;
  • the mounting plate is located between the two guide rails and is also provided with two cushioning devices that provide damping in the Y-axis direction, and the mounting plate is on
  • a position sensor is provided on one side of each buffer device; the stopper is located between the two buffer devices and on the same Y-axis axis as the two buffer devices; the stopper can be driven by a rodless cylinder Conflict with two buffer devices respectively.
  • the rack includes an upper cabinet and a lower cabinet; the workbench is set on the top of the lower cabinet as the top plate of the lower cabinet; the lower cabinet is separated from left to right Are the first lower installation room, the second lower installation room, and the third lower installation room.
  • An electric box is installed in the first lower installation room, a tester is installed in the second lower installation room, and the third lower installation room Pneumatic components are installed;
  • the upper cabinet is divided from front to back into a first upper cabinet and a second upper cabinet, the height of the second upper cabinet is greater than the height of the first upper cabinet;
  • the first upper cabinet It includes a rectangular first upper frame, a first upper left sealing plate arranged on the left side of the first upper frame, and a first upper right sealing plate arranged on the right side of the first upper frame.
  • the second upper cabinet body includes a rectangular second upper frame, a second upper left side sealing plate arranged on the left side of the second upper frame, and The second upper right side sealing plate on the right side of the second upper frame, the second upper top sealing plate provided on the top surface of the second upper frame, and the second upper back seal provided on the back of the second upper frame Plate;
  • the front part of the second upper frame higher than the first upper frame is equipped with an integrated machine fixing plate;
  • the number of the air tightness testing mechanism is two groups, which are arranged side by side on the workbench; wherein, the Z-axis lifting mechanism It is located in the second upper cabinet; an industrial control all-in-one machine is installed on the all-in-one machine fixing plate, and a keyboard and a mouse are respectively electrically connected to the industrial control all-in-one on the first upper top sealing plate.
  • the upper clamp or the lower clamp is provided with a partial pressure air hole communicating with the test cavity
  • the third lower installation chamber is also provided with two partial pressure tanks, each of which has a partial pressure The tank is communicated with the partial pressure air holes of a group of air tightness testing mechanism through the air circuit assembly.
  • a scanning gun is installed in the first upper cabinet corresponding to each group of air-tightness testing mechanisms; or, the front end of each group of air-tightness testing mechanisms is installed on the workbench.
  • the Z-axis driving device includes a cylinder fixing plate installed above the mounting plate through a supporting column, and a pressing cylinder installed on the cylinder fixing plate; the pressing plate is arranged on the cylinder fixing plate.
  • a downward pressure guide mechanism is installed between the lower pressure plate and the cylinder fixing plate; the downward pressure guide mechanism includes two guide posts respectively mounted on the lower pressure plate and two fixed on the cylinder A guide sleeve matched with the guide post on the plate, the guide post passes through the guide sleeve and the upper end of the guide post is higher than the upper surface of the cylinder fixing plate.
  • a sealing ring is provided between the upper clamp and the lower clamp, the sealing ring is located on the outer peripheral side of the test cavity; the lower clamp is provided with a positioning hole, and the upper clamp The bottom is provided with a positioning column matching the positioning hole, and the positioning column can be inserted into or separated from the positioning hole during a descending or ascending process.
  • the sealing fixture further includes a plugging portion arranged in the test cavity and used for plugging the vent holes on the tested product, installed on the lower fixture and used for driving A driving mechanism for the blocking portion to act;
  • the blocking portion includes a soft rubber profiling block, the soft rubber profiling block has a profiling fitting surface that is matched with the vent hole of the tested product;
  • the driving The mechanism includes a sliding block connected with the blocking part, and a cylinder assembly that is connected to the sliding block in transmission and used to drive the sliding block to move;
  • the lower clamp is provided with a sliding groove that penetrates the test cavity, The sliding block is slidingly matched with the sliding groove.
  • the second objective of the present invention is achieved by adopting the following technical solution: a testing method for an airtightness testing device, including the following steps: the preparation step is to control the rodless cylinder to drive the sliding seat and the lower clamp to slide along the Y axis on the guide rail. After the fixture is moved to the assembly station, put the product under test into the lower cavity of the lower fixture, and then continue to control the rodless cylinder to drive the sliding seat and the lower fixture to slide along the Y axis on the guide rail. The current fixture moves to the front of the upper fixture.
  • test link includes Either of the following two test methods: Test method 1: The tester fills the test chamber with compressed air at a preset pressure, and after the preset pressure-holding time, the tester detects the pressure in the test chamber Change value.
  • Test method 2 Small leak test link: The tester fills the test cavity with compressed air at a preset pressure. After the preset pressure holding time, the tester detects the pressure change value in the test cavity. If the pressure change value exceeds the specified range , The tested product is determined to be a small leak unqualified product and enters the exhaust link; if the pressure change value is within the specified range, the tested product is determined to be a small leak qualified product and enters the large leak test link; the large leak test link: Open the partial pressure valve, the gas in the test chamber enters the partial pressure tank.
  • the tester After the preset balance time, the tester detects the pressure change value in the partial pressure tank. If the pressure change value exceeds the specified range, it is judged to be The tested product is a large-leakage unqualified product; if the pressure change value is within the specified range, the tested product is determined to be a large-leakage qualified product.
  • the scanning gun scans and decodes the tested product and compares the signal with the data in the database to generate a code reading signal
  • wireless communication The unit receives and transmits the code reading signal to the display device of the industrial control integrated computer for display; or, in the test link, the staff's operating area is detected in real time through the grating sensor.
  • the grating sensor sends the detection signal to the industrial control integrated machine, and the industrial control integrated machine controls the alarm device to alarm.
  • the workbench of the present invention is provided with at least one set of airtightness testing mechanism, and the airtightness testing mechanism includes a mounting plate fixedly installed on the workbench, Y-axis sliding mechanism, Z-axis lifting mechanism and sealing fixture; the rodless cylinder drives the sliding seat and the lower fixture to slide along the Y axis on the guide rail.
  • the Z-axis drive device drives the lower platen And the upper clamp descends or rises in the Z-axis direction, so that the upper clamp and the upper clamp can be closed or opened; in addition, the upper clamp is fixedly connected with the lower platen in a detachable connection mode, and the lower clamp is detachably connected
  • the method is fixedly connected to the sliding seat.
  • the guide rail of the present invention includes two guide rails arranged in parallel along the Y-axis direction; correspondingly, the number of the sliders is two, and each of the sliders is slidingly matched with one guide rail; the bottom of the sliding seat is downward
  • the extension is provided with a stopper; the position between the two guide rails on the mounting plate is also provided with two cushioning devices that provide damping in the Y-axis direction, and a position sensor is provided on one side of each cushioning device on the mounting plate;
  • the stopper is located between the two buffer devices and is located on the same Y-axis axis with the two buffer devices; the stopper can respectively conflict with the two buffer devices under the drive of the rodless cylinder.
  • the buffer device provides Y-axis damping to the sliding seat, which can prevent the product from shaking or shifting in the sealed cavity, and has the characteristics of good stability.
  • the rodless cylinder, guide rail, buffer device and position sensor cooperate with each other , Can further improve the test accuracy and make the layout more reasonable; the design of the double guide rail can form a plane force, the upper and lower clamps are evenly compressed, so that the clamps work stably. Especially when more than two sets of air tightness testing institutions are used, the testing efficiency can be greatly improved.
  • the rack of the present invention includes an upper cabinet and a lower cabinet; the workbench is set on the top of the lower cabinet as the top plate of the lower cabinet; the lower cabinet is divided into the first lower installation room and the second lower cabinet from left to right.
  • the electric box is installed in the first lower installation room, the tester is installed in the second lower installation room, and the pneumatic components are installed in the third lower installation room.
  • the upper cabinet is divided from front to back.
  • An upper cabinet body and a second upper cabinet body the height of the second upper cabinet body is greater than the height of the first upper cabinet body; the Z-axis lifting mechanism is located in the second upper cabinet body;
  • a keyboard and a mouse are installed on the top sealing plate which are respectively connected to the industrial control unit electromechanically; this design can store various equipment that does not require frequent operation in different enclosed spaces, which is convenient for debugging and maintenance, and the industrial control unit is integrated.
  • the machine, keyboard and mouse are placed in a position that is convenient for viewing and convenient operation, and has the advantages of reasonable layout, convenient operation, good protection effect and beautiful appearance.
  • a scanning gun is installed corresponding to each group of airtightness testing mechanisms.
  • the scanning gun scans and decodes the tested product and stores the signal in the database.
  • the data is compared to generate a code reading signal.
  • the wireless communication unit receives and transmits the code reading signal to the display device of the industrial control integrated machine for display.
  • the model, specification and other information of the tested product can be identified according to the code reading information, which is convenient for the staff to quickly adjust Test parameters to improve work efficiency.
  • a grating sensor is installed on the workbench corresponding to the front end of each group of air-tightness testing institutions. The grating sensor detects the operating area of the staff in real time. When a foreign object enters the operating area, the grating sensor sends the detection signal to the industrial control system.
  • the all-in-one machine and industrial control all-in-one machine control the alarm device to achieve alarm and improve safety performance.
  • the lower clamp of the present invention is provided with a positioning hole, and the bottom of the upper clamp is provided with a positioning column matching the positioning hole.
  • the positioning column can be inserted or separated from the positioning hole during the descending or ascending process, which has accurate positioning and disassembly.
  • the present invention is provided with a plugging part for blocking the vent of the tested product in the test cavity, and the driving mechanism drives the blocking part to automatically block the vent of the tested product, and the sealing is accurate in place and not easy to loosen. It has good sealing performance and will not cause false test, which is beneficial to improve test efficiency.
  • the present invention includes a mounting plate and a cylinder fixing plate installed above the mounting plate through four support columns. This design can resist the blocking force with a reasonable deformation to ensure that the overall air tightness test mechanism is uniformly sealed and reliable.
  • Fig. 1 is a perspective view of the air tightness test device of the embodiment.
  • Fig. 2 is a perspective view of the air-tightness testing device from another angle of the embodiment.
  • Figure 3 is a three-dimensional view of two sets of air tightness testing mechanisms of the embodiment.
  • FIG. 4 is a perspective view of the sealing jig of Example 1.
  • FIG. 5 is a schematic diagram of the structure of the lower clamp of Embodiment 1.
  • FIG. 5 is a schematic diagram of the structure of the lower clamp of Embodiment 1.
  • FIG. 6 is a schematic diagram of the structure of the upper clamp of Embodiment 1.
  • FIG. 6 is a schematic diagram of the structure of the upper clamp of Embodiment 1.
  • FIG. 7 is a schematic diagram of the split structure of the sealing clamp of Embodiment 2.
  • FIG. 7 is a schematic diagram of the split structure of the sealing clamp of Embodiment 2.
  • FIG. 8 is a schematic diagram of the structure of the lower clamp of Embodiment 2.
  • FIG. 8 is a schematic diagram of the structure of the lower clamp of Embodiment 2.
  • FIG. 9 is a schematic diagram of the structure of the plugging part, the sliding block, and the cylinder assembly of the second embodiment.
  • FIG. 10 is a schematic diagram of the structure of the upper clamp of Embodiment 2.
  • FIG. 10 is a schematic diagram of the structure of the upper clamp of Embodiment 2.
  • upper cabinet body 1111, first upper frame; 1112, first upper left sealing plate; 1113, first upper right sealing plate; 1114, first upper top sealing plate; 1121, second upper Frame; 1122, the second upper left side sealing plate; 1123, the second upper right side sealing plate; 1124, the second upper top sealing plate; 1125, the second upper back sealing plate; 1126, the all-in-one machine is fixed; 12, the lower cabinet 121.
  • connection between the media can be the connection between two elements or the interaction between two elements.
  • connection between the media can be the connection between two elements or the interaction between two elements.
  • the airtightness test device includes a frame.
  • a horizontal workbench 20 is arranged on the frame.
  • the length of the workbench 20 is in the X-axis direction, and the width of the workbench is Y-axis.
  • Direction, the height direction of the workbench is the Z-axis direction;
  • two sets of air-tightness testing mechanisms are provided on the workbench 20, and the air-tightness testing mechanisms include a mounting plate 31 fixedly installed on the workbench, a Y-axis sliding mechanism 32, and a Z-axis.
  • the Y-axis sliding mechanism 32 includes a guide rail 321, a sliding seat 322 and a rodless cylinder 323.
  • the guide rail is fixedly installed on the mounting plate along the Y-axis direction.
  • the bottom surface of the sliding seat 322 is provided to slide with the guide rail.
  • Cooperating slider; rodless cylinder is fixedly installed on the mounting plate along the Y axis and located on one side of the guide rail; the outer slider of the rodless cylinder is fixedly connected to one end of the sliding seat; the Z-axis lifting mechanism 33 includes the installation above the guide rail
  • the sealing clamp 34 includes an upper clamp 341 and a lower clamp 342, the upper clamp 341 is provided with an upper cavity 3411, and the lower clamp 342 is provided with a lower cavity 3421, the upper cavity and the lower cavity are opposed to and cooperate to form a test cavity, the lower clamp 342 is provided with an air inlet 3422 communicating with the test cavity; the upper clamp is fixedly connected to the lower pressure plate in a detachable connection mode, and the lower clamp is detachable
  • the connection method is fixedly connected with the sliding seat; specifically, the detachable connection method may
  • the rodless cylinder drives the sliding seat and the lower clamp to slide along the Y-axis on the guide rail.
  • the Z-axis driving device drives the lower plate and the upper clamp to descend or rise in the Z-axis direction, making the upper Mold clamping or mold opening is realized between the clamp and the upper clamp.
  • a rodless cylinder refers to a cylinder that uses a piston to directly or indirectly connect an external actuator, and makes it follow the piston to achieve reciprocating motion.
  • the biggest advantage of this cylinder is to save installation space.
  • the rodless cylinder is a magnetically coupled rodless cylinder or a mechanical rodless cylinder.
  • the guide rail includes two guide rails arranged in parallel along the Y-axis direction; correspondingly, the number of sliders is two, and each slider is slidingly fitted with one guide rail; the bottom of the sliding seat 322 There is a stopper extending downward; the position between the two guide rails on the mounting plate is also provided with two cushioning devices 41 that provide damping in the Y-axis direction, and the mounting plate is provided with one on one side of each cushioning device.
  • Position sensor 42; the stopper is located between the two buffer devices and is located on the same Y-axis axis with the two buffer devices; the stopper can be driven by the rodless cylinder to conflict with the two buffer devices respectively.
  • the buffer device provides Y-axis damping to the sliding seat, which can prevent the product from shaking or shifting in the sealed cavity, and has the characteristics of good stability.
  • the rodless cylinder, guide rail, buffer device and position sensor cooperate with each other , Can further improve the test accuracy and make the layout more reasonable; especially when more than two sets of air tightness testing institutions are used, the test efficiency can be greatly improved.
  • the buffer device includes a fixed seat and a buffer mounted on the fixed seat, and the buffer may specifically be a hydraulic buffer.
  • the rack includes an upper cabinet 11 and a lower cabinet 12; the workbench is set on the top of the lower cabinet as the top plate of the lower cabinet; the lower cabinet 12 is divided from left to right into the first The lower installation room 121, the second lower installation room 122 and the third lower installation room 123, the electric box 51 is installed in the first lower installation room, the tester 52 is installed in the second lower installation room, and the pneumatic is installed in the third lower installation room.
  • the pneumatic components include an inflation valve, a pressure maintaining valve, and a vent valve connected by pipelines; the gas source interface of the tester is connected to the inflation valve, and the outlet end of the inflation valve is respectively connected to the pressure maintaining valve and the vent valve; the pressure maintaining valve Connect the air inlet of the sealing mold; more preferably, the air inlet of the inflation valve is connected to the air source interface of the tester through a high-pressure regulating valve and a low-pressure regulating valve, respectively.
  • the upper cabinet body 11 is divided from front to back into a first upper cabinet body and a second upper cabinet body, the height of the second upper cabinet body is greater than the height of the first upper cabinet body;
  • the first upper cabinet body includes a rectangular first upper frame 1111 ,
  • the first upper left side sealing plate 1112 provided on the left side of the first upper frame, the first upper right side sealing plate 1113 provided on the right side of the first upper frame, and the first upper right side sealing plate 1113 provided on the top of the first upper frame
  • the second upper cabinet body includes a rectangular second upper frame 1121, a second upper left side sealing plate 1122 arranged on the left side of the second upper frame 1121
  • the front part of the second upper frame higher than the first upper frame is equipped with an all-in-one fixing plate 1126; the number of
  • the rack adopts the above design, which can store various equipment that does not require frequent operation in different enclosed spaces, which is convenient for debugging and maintenance.
  • the industrial control integrated machine, keyboard and mouse are placed in convenient viewing and convenient positions. It has a reasonable layout, It has the advantages of convenient operation, good protection effect and beautiful appearance.
  • a scanning gun 71 is installed in the first upper cabinet corresponding to each group of air tightness testing mechanisms; a grating sensor 72 is installed on the front end of each group of air tightness testing mechanisms on the workbench.
  • the Z-axis driving device includes a cylinder fixing plate 333 installed above the mounting plate through four support columns 332, and a pressing cylinder 334 installed on the cylinder fixing plate; the lower pressing plate is set at the lower pressing plate.
  • a down-pressing guide mechanism is installed between the lower pressing plate and the cylinder fixing plate; the down-pressing guiding mechanism includes two guide posts 335 installed on the lower pressing plate and a guide post installed on the cylinder fixing plate With the two matched guide sleeves 336, the guide post passes through the guide sleeve and the upper end of the guide post is higher than the upper surface of the cylinder fixing plate.
  • the lower pressure cylinder adopts a large stroke cylinder, the positioning is more accurate, and it is convenient for the lower pressure plate to move up or down.
  • a limiter and a buffer are also installed between the guide sleeve and the cylinder fixing plate.
  • the buffer can reduce the noise generated by the movement of the upper clamp and play a role of pressing and buffering.
  • the limit piece can control the lowering position of the lower platen.
  • a sealing ring is provided between the upper clamp and the lower clamp, and the sealing ring is located on the outer peripheral side of the test cavity; specifically, a sealing ring installation groove is provided on the upper clamp, and the sealing ring is embedded in the sealing ring In the installation slot.
  • the lower clamp 342 is provided with a positioning hole 3423, and the bottom of the upper clamp 341 is provided with a positioning post 3412 that matches the positioning hole.
  • the positioning post can be inserted into or removed from the positioning during the descending or ascending process. In the hole, it has the advantages of accurate positioning and convenient disassembly and assembly.
  • a test method for an air tightness test device includes the following steps: preparation step; control without lever The cylinder drives the sliding seat and the lower clamp to slide along the Y axis on the guide rail.
  • preparation step control without lever
  • the cylinder drives the sliding seat and the lower clamp to slide along the Y axis on the guide rail.
  • the lower clamp moves to the assembly station, put the product under test into the lower cavity of the lower clamp, and then continue to control the rodless cylinder to drive the sliding seat and the lower clamp.
  • the clamp slides along the Y-axis direction on the guide rail.
  • the Z-axis driving device When the lower clamp moves directly below the upper clamp, the Z-axis driving device is controlled to drive the lower platen and the upper clamp to descend in the Z-axis direction, so that the upper clamp and the upper clamp can be clamped;
  • the tester is connected to the air inlet of the sealing fixture; the test link: the tester fills the test cavity with compressed air at a preset pressure, and after the preset pressure holding time, the tester detects the pressure change in the test cavity If the pressure change value exceeds the specified range, the tested product is determined to be an unqualified product for airtightness; if the pressure change value is within the specified range, the tested product is determined to be a qualified product for airtightness.
  • the scanning gun scans and decodes the tested product and compares the signal with the data in the database to generate a code reading signal.
  • the communication unit receives and transmits the code reading signal to the display device of the industrial control integrated machine for display; in the test link, the staff's operating area is detected in real time through the grating sensor.
  • the grating The sensor sends the detection signal to the industrial control integrated machine, and the industrial control integrated machine controls the alarm device to alarm.
  • Embodiment 2 With reference to Figures 7-10, this embodiment is characterized in that: the sealing fixture further includes a blocking portion 343 arranged in the test cavity and used to block the vent hole on the product under test, mounted on the lower fixture and A driving mechanism for driving the action of the blocking part; the blocking part 343 includes a soft rubber copying block, the soft rubber copying block has a copying fitting surface matched with the vent hole of the tested product; the driving mechanism includes the blocking part The connected sliding block 344 and the air cylinder assembly 345 which is connected to the sliding block and used to drive the sliding block to move; the lower clamp is provided with a sliding groove that penetrates the test cavity, and the sliding block is slidingly matched with the sliding groove.
  • the present invention is provided with a plugging part used to block the vent of the tested product in the test cavity, and the driving mechanism drives the blocking part to automatically block the vent of the tested product, and the sealing is accurate in place and not easy to loosen. Good airtightness will not lead to false tests, which is conducive to improving test efficiency.
  • the material of the soft rubber imitation block can be silica gel, rubber or other flexible materials, and this embodiment is not limited.
  • Embodiment 3 With reference to Figure 1, the feature of this embodiment is that the upper clamp or the lower clamp is provided with a partial pressure air hole communicating with the test cavity, and the third lower installation chamber is also provided with two partial pressure tanks 80, each of which is The pressure tank is communicated with the partial pressure pores of a group of air tightness testing mechanism through the air circuit assembly.
  • the gas circuit assembly includes a pressure dividing valve, one end of the pressure dividing valve is connected to the pressure dividing vent, and the other end of the pressure dividing valve is connected to the pressure dividing tank.
  • the finished smart watch is used as the tested product for air tightness test.
  • the specific test method is as follows: a test method for an air tightness test device, including the following steps: preparation step: controlling the rodless cylinder to drive the sliding seat and The lower clamp slides along the Y axis on the guide rail. When the lower clamp moves to the assembly station, put the tested product into the lower cavity of the lower clamp, and then continue to control the rodless cylinder to drive the sliding seat and the lower clamp on the upper edge of the guide rail.
  • the Z-axis driving device is controlled to drive the lower platen and the upper clamp to descend in the Z-axis direction, so that the upper clamp and the upper clamp can be clamped; the tester and the sealing clamp
  • the air inlet is connected;
  • the small leakage test link the tester fills the test chamber with compressed air at a preset pressure, after the preset pressure holding time, the tester detects the pressure change value in the test chamber, if If the pressure change value exceeds the specified range, the tested product is determined to be a small leak unqualified product and enters the exhaust link; if the pressure change value is within the specified range, the tested product is determined to be a small leak qualified product and enters the large leak test link ; Big leak test link: open the partial pressure valve, the gas in the test chamber enters the partial pressure tank, after the preset equilibrium time, the tester detects the pressure change value in the partial pressure tank, if the pressure change value exceeds If the pressure change value is within the
  • the number of airtightness testing institutions can be 1, 3, 4 or more groups, which can be adjusted according to actual needs.
  • the tester adopts products in the existing technology, specifically it can be a CD300 tester produced by Guangzhou Upton Automation System Co., Ltd. for testing finished smart watches; it can be a model produced by Guangzhou Upton Automation System Co., Ltd. It is a tester of UT811S, used to test semi-finished products of smart watches, such as upper case and bottom case.

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  • General Physics & Mathematics (AREA)
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Abstract

一种气密性测试装置，包括机架，机架上设有工作台（20），工作台（20）上设置有至少一组气密性测试机构，气密性测试机构包括固定安装于工作台（20）上的安装板（31）、Y轴滑动机构（32）、Z轴升降机构（33）和密封夹具（34）；Y轴滑动机构（32）包括导轨（321）、滑动座（322）和无杆气缸（323），无杆气缸（323）的外滑块与滑动座（322）的一端固定连接；Z轴升降机构（33）包括下压板（331）以及驱动下压板（331）沿Z轴方向移动的Z轴驱动装置；密封夹具（34）包括上夹具（341）和下夹具（342），上夹具（341）以可拆卸的连接方式与下压板（331）固定连接，下夹具（342）以可拆卸的连接方式与滑动座（322）固定连接。还公开了一种气密性测试方法。气密性测试装置结构紧凑，布局合理，拆装方便，可靠性好，更换上下夹具即可适配其他产品，稳定性好，测试准确性好并且测试效率高。

Description

气密性测试装置及其测试方式 技术领域
本发明涉及气密性检测设备技术领域，具体涉及一种气密性测试装置及其测试方式。
 背景技术
智能手表，是将手表内置智能化系统、搭载智能手机系统而连接于网络而实现多功能，能同步手机中的电话、短信、邮件、照片、音乐等，因此，智能手表越来越受到消费者的喜爱。而在手表出厂前，必须要对手表上通话口、麦克风、背板控制模块、复位键、音量键、按压调节按键、旋转调节按键等进行密封性测试，以对智能手表产品的密封、防水数据进行采集判断，杜绝不良品流出。
现有技术中，申请号CN201611238296.6的发明专利公开了一种气密性检测治具，底板和滑动装设于底板上部的载具和能够驱动载具运动的驱动装置，底板上部装设有下压机构，载具上装设有下密封型腔；下密封型腔包括密封零部件，密封零部件内装设有产品和能够将产品的右侧面进行密封的侧面随动机构；下压机构的下压板底部装设有密封天板；密封天板的底部装设有能够将下密封型腔进行密封的上密封型腔，密封天板的底部且位于上密封型腔位置处装设有能够将产品进行密封的密封件，密封天板的底部且位于上密封型腔位置处装设有与侧面随动机构相配合并推动侧面随动机构运动的上随动机构。但是这种结构的检测治具还存在如下问题：该装置用于驱动载具运动的驱动装置包括装设于底板底部的电机固定板和丝杠固定座、装设于电机固定板上的驱动电机、装设于驱动电机主轴上的主动轮、装设于丝杠固定座上的丝杆和装设与丝杆端部的从动轮，主动轮与从动轮之间通过皮带连接，丝杆上配合安装有丝杆螺母，丝杆螺母上安装有载具连接块，且载具连接块从底板穿过，载具连接块的上端固定在载具的底部；这种驱动装置存在结构复杂，占用空间大及运行稳定性差的缺点；而且该装置在载具运动过程中，不具有缓冲的作用，尤其是当运动速度过快时，容易导致产品在密封型腔中晃动或偏移，进而影响测试效果的准确性，而且电机发热会补偿空气泄漏压力降，严重影响密封性测试的可靠性。
 技术问题
为了克服现有技术的不足，本发明的目的之一在于提供一种气密性测试装置，它具有结构紧凑、布局合理、拆装方便、可靠性好、更换上下夹具即可适配其他产品的特点；进一步地、它还具有稳定性好、测试准确性好、测试效率高的特点。
本发明的目的之二在于提供一种气密性测试装置的测试方法，具有操作方便、测试效率高的特点。
 技术解决方案
本发明的目的之一采用如下技术方案实现：气密性测试装置，包括机架，所述机架上设置有水平的工作台，所述工作台的长度方向为X轴方向，所述工作台的宽度方向Y轴方向，所述工作台的高度方向为Z轴方向；其特征在于：所述工作台上设置有至少一组气密性测试机构，所述气密性测试机构包括固定安装于所述工作台上的安装板、Y轴滑动机构、Z轴升降机构和密封夹具；所述Y轴滑动机构包括导轨、滑动座和无杆气缸，所述导轨沿Y轴方向固定安装于所述安装板上，所述滑动座的底面上设有与所述导轨滑动配合的滑块；所述无杆气缸沿Y轴方向固定安装于所述安装板上并位于导轨的一侧；所述无杆气缸的外滑块与所述滑动座的一端固定连接；所述Z轴升降机构包括设置于所述导轨上方的下压板以及驱动下压板沿Z轴方向移动的Z轴驱动装置；所述密封夹具包括上夹具和下夹具，所述上夹具上设有上空腔，所述下夹具上设有下空腔，所述上空腔和下空腔相对并配合形成测试腔，所述上夹具或下夹具上设有与所述测试腔连通的进气孔；所述上夹具以可拆卸的连接方式与所述下压板固定连接，所述下夹具以可拆卸的连接方式与所述滑动座固定连接；由无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，由Z轴驱动装置带动下压板及上夹具在Z轴方向下降或上升，使得上夹具与上夹具之间实现合模或开模。
一种可选的实施方式中，所述导轨包括两个沿Y轴方向平行设置的导轨；与之对应，所述滑块的数量为两个，每个所述滑块与一个所述导轨滑动配合；所述滑动座的底部向下延伸设有挡块；所述安装板上位于两个导轨之间的位置还设有两个提供Y轴方向的阻尼的缓冲装置，所述安装板上在每个缓冲装置的一侧均设有一个位置传感器；所述挡块位于两个缓冲装置之间且与两个缓冲装置位于同一Y轴轴线上；所述挡块能够在无杆气缸的带动下分别与两个缓冲装置相抵触。
一种可选的实施方式中，所述机架包括上柜体、下柜体；所述工作台设置于下柜体的顶部作为下柜体的顶板；所述下柜体从左向右分隔为第一下安装室、第二下安装室和第三下安装室，所述第一下安装室内安装有电箱，所述第二下安装室内安装有测试仪，所述第三下安装室内安装有气动组件；所述上柜体从前向后分隔为第一上柜体和第二上柜体，第二上柜体的高度大于第一上柜体的高度；所述第一上柜体包括矩形的第一上框架、设置在第一上框架的左侧面的第一上左侧封板、设置在第一上框架的右侧面的第一上右侧封板、设置于在第一上框架的顶面的第一上顶封板；所述第二上柜体包括矩形的第二上框架、设置在第二上框架的左侧面的第二上左侧封板、设置在第二上框架的右侧面的第二上右侧封板、设置于在第二上框架的顶面的第二上顶封板、设置于在第二上框架的背面的第二上背封板；第二上框架的前面高出第一上框架的部分安装有一体机固定板；所述气密性测试机构的数量为两组，它们并排设置在工作台上；其中，Z轴升降机构位于第二上柜体内；所述一体机固定板上安装有工控一体机，所述第一上顶封板上安装有分别与所述工控一体机电性连接的键盘及鼠标。
一种可选的实施方式中，所述上夹具或下夹具上设有与所述测试腔连通的分压气孔，所述第三下安装室内还设置有两个分压罐，每个分压罐通过气路组件与一组气密性测试机构的分压气孔连通。
一种可选的实施方式中，所述第一上柜体内对应每组气密性测试机构均安装有一扫描枪；或者是，所述工作台上对应每组气密性测试机构的前端均安装有一光栅传感器。
一种可选的实施方式中，所述Z轴驱动装置包括通过支撑柱安装在安装板上方的气缸固定板、装设于气缸固定板上的下压气缸；所述下压板设置在下压气缸的活塞杆下端，所述下压板与气缸固定板之间装设有下压导向机构；所述下压导向机构包括两个分别装设于下压板上的导柱和两个分别装设于气缸固定板上的与导柱相配合的导套，所述导柱从导套中穿过且导柱的上端高于气缸固定板的上表面。
一种可选的实施方式中，所述上夹具和下夹具之间设有密封圈，所述密封圈位于所述测试腔外周侧；所述下夹具上设有定位孔，所述上夹具的底部设有与所述定位孔相匹配的定位柱，所述定位柱在下降或上升过程中能够插入或脱离所述定位孔中。
一种可选的实施方式中，所述密封夹具还包括设于所述测试腔内且用于封堵被测产品上的透气孔的封堵部、安装于所述下夹具上且用于驱动所述封堵部动作的驱动机构；所述封堵部包括软胶仿型块，所述软胶仿型块具有与所述被测产品的透气孔配合的仿型贴合面；所述驱动机构包括与所述封堵部连接的滑块、以及与所述滑块传动连接并用于驱动所述滑块动作的气缸组件；所述下夹具上设有与所述测试腔贯通的滑槽，所述滑块与所述滑槽滑动配合。
本发明的目的之二采用如下技术方案实现：一种气密性测试装置的测试方法，包括以下步骤：准备环节，控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至装配工位后，将被测产品放入下夹具的下空腔中，然后继续控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，控制Z轴驱动装置带动下压板及上夹具在Z轴方向下降，使得上夹具与上夹具之间实现合模；将测试仪与密封夹具的进气孔连通；测试环节：测试环节包括以下两种测试方式中的任意一种：测试方式一：由测试仪向测试腔中充入预设压力的压缩空气，经过预设的保压时间后，由测试仪检测出测试腔中的压力变化值，若压力变化值超出规定范围，则判定被测产品为气密性不合格产品；若压力变化值在规定的范围内，则判定被测产品为气密性合格产品；测试方式二：小漏测试环节：由测试仪向测试腔中充入预设压力的压缩空气，经过预设的保压时间后，由测试仪检测出测试腔中的压力变化值，若压力变化值超出规定范围，则判定被测产品为小漏不合格产品，进入排气环节；若压力变化值在规定的范围内，则判定被测产品为小漏合格产品，进入大漏测试环节；大漏测试环节：打开分压阀，测试腔中的气体进入至分压罐中，经过预设的平衡时间后，由测试仪检测出分压罐中的压力变化值，若压力变化值超出规定范围，则判定被测产品为大漏不合格产品；若压力变化值在规定的范围内，则判定被测产品为大漏合格产品。
一种可选的实施方式中，准备环节中，当下夹具移动至上夹具的正下方时，扫描枪对被测产品进行扫描及解码并将信号与数据库中的数据进行对比生成读码信号，无线通讯单元接收并传输读码信号到工控一体化机的显示装置上显示；或者是，测试环节中，通过光栅传感器对工作人员的操作区域进行实时检测，测试过程中，当有外物进入操作区域时，光栅传感器将检测信号发送工控一体化机，工控一体化机控制报警装置实现报警。
 有益效果
相比现有技术，本发明的有益效果在于：1、本发明的工作台上设置有至少一组气密性测试机构，气密性测试机构包括固定安装于所述工作台上的安装板、Y轴滑动机构、Z轴升降机构和密封夹具；由无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，由Z轴驱动装置带动下压板及上夹具在Z轴方向下降或上升，使得上夹具与上夹具之间实现合模或开模；另外上夹具以可拆卸的连接方式与所述下压板固定连接，下夹具以可拆卸的连接方式与滑动座固定连接，这样设计，采用气缸驱动，不会因为发热而严重影响密封性测试的可靠性，具有结构紧凑、布局合理、拆装方便、可靠性好、更换上下夹具即可适配其他产品的特点。
2、本发明的导轨包括两个沿Y轴方向平行设置的导轨；与之对应，所述滑块的数量为两个，每个所述滑块与一个导轨滑动配合；滑动座的底部向下延伸设有挡块；安装板上位于两个导轨之间的位置还设有两个提供Y轴方向的阻尼的缓冲装置，安装板上在每个缓冲装置的一侧均设有一个位置传感器；挡块位于两个缓冲装置之间且与两个缓冲装置位于同一Y轴轴线上；挡块能够在无杆气缸的带动下分别与两个缓冲装置相抵触。这样设计，由缓冲装置对滑动座提供Y轴方向的阻尼，能够防止产品在密封型腔中晃动或偏移，具有稳定性好的特点，另外无杆气缸、导轨、缓冲装置及位置传感器相互配合，能够进一步提高测试准确性和使得布局更加合理；双导轨的设计能形成平面式受力，上下夹具受压均匀，让夹具工作稳定。尤其是当采用两组以上的气密性测试机构时，能够大大提高测试效率。
3、本发明的机架包括上柜体、下柜体；工作台设置于下柜体的顶部作为下柜体的顶板；下柜体从左向右分隔为第一下安装室、第二下安装室和第三下安装室，第一下安装室内安装有电箱，第二下安装室内安装有测试仪，第三下安装室内安装有气动组件；另外，上柜体从前向后分隔为第一上柜体和第二上柜体，第二上柜体的高度大于第一上柜体的高度；Z轴升降机构位于第二上柜体内；一体机固定板上安装有工控一体机，第一上顶封板上安装有分别与所述工控一体机电性连接的键盘及鼠标；这样设计，能够将各种不需要频繁操作的设备分别收纳于不同封闭空间内，方便调试维护，将工控一体机、键盘及鼠标放置于方便观看及方便操作的位置，具有布局合理、操作方便、防护效果好及外观美观的优点。
4、本发明的第一上柜体内对应每组气密性测试机构均安装有一扫描枪，当下夹具移动至上夹具的正下方时，扫描枪对被测产品进行扫描及解码并将信号与数据库中的数据进行对比生成读码信号，无线通讯单元接收并传输读码信号到工控一体化机的显示装置上显示，可以根据读码信息识别被测产品的型号、规格等信息，便于工作人员快速调节测试参数，提高工作效率。另外，工作台上对应每组气密性测试机构的前端均安装有一光栅传感器，通过光栅传感器对工作人员的操作区域进行实时检测，当有外物进入操作区域时，光栅传感器将检测信号发送工控一体化机，工控一体化机控制报警装置实现报警，提高安全性能。
5、本发明的下夹具上设有定位孔，上夹具的底部设有与定位孔相匹配的定位柱，定位柱在下降或上升过程中能够插入或脱离定位孔中，具有定位准确和拆装方便的优点。另外，本发明在测试腔内设置有用于封堵被测产品的透气孔的封堵部，通过驱动机构驱动封堵部对被测产品的透气孔进行自动封堵，封堵到位准确，不易松脱，密封性好，不会导致误测，有利于提高测试效率。
6、本发明包括安装板，以及通过四个支撑柱安装在安装板上方的气缸固定板，这样设计，能以合理的形变抵抗封堵力保障整体气密性测试机构受力均匀密封可靠。
 附图说明
图1为实施例的气密性测试装置的立体图。
图2为实施例的另一角度的气密性测试装置的立体图。
图3为实施例的两组气密性测试机构的立体图。
图4为实施例1的密封夹具的立体图。
图5为实施例1的下夹具的结构示意图。
图6为实施例1的上夹具的结构示意图。
图7为实施例2的密封夹具的分体结构示意图。
图8为实施例2的下夹具的结构示意图。
图9为实施例2的封堵部、滑块、气缸组件的结构示意图。
图10为实施例2的上夹具的结构示意图。
图中：11、上柜体；1111、第一上框架；1112、第一上左侧封板；1113、第一上右侧封板；1114、第一上顶封板；1121、第二上框架；1122、第二上左侧封板；1123、第二上右侧封板；1124、第二上顶封板；1125、第二上背封板；1126、一体机固定；12、下柜体；121、第一下安装室；122、第二下安装室；123、第三下安装室；20、工作台；31、安装板；32、Y轴滑动机构；321、导轨；322、滑动座；323、无杆气缸；33、Z轴升降机构；331、下压板；332、支撑柱；333、气缸固定板；334、下压气缸；335、导柱；336、导套；34、密封夹具；341、上夹具；3411、上空腔；3412、定位柱；342、下夹具；3421、下空腔；3422、进气孔；3423、定位孔；343、封堵部；344、滑块；345、气缸组件；41、缓冲装置；42、位置传感器；51、电箱；52、测试仪；61、工控一体机；62、键盘；63、鼠标；71、扫描枪；72、光栅传感器；80、分压罐。
 本发明的实施方式
下面，结合附图以及具体实施方式，对本发明做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。除特殊说明的之外，本实施例中所采用到的材料及设备均可从市场购得。实施例的实例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解对本申请的限制。
在本申请的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或者位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或者暗示所指的装置或者元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。在本申请的描述中，“多个”的含义是两个或两个以上，除非是另有精确具体地规定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“相连”、“连通”、“连接”应作广义理解，例如，可以使固定连接，也可以是通过中介媒介间相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
实施例1：请参照图1-6，气密性测试装置，包括机架，机架上设置有水平的工作台20，工作台20的长度方向为X轴方向，工作台的宽度方向Y轴方向，工作台的高度方向为Z轴方向；工作台20上设置有两组气密性测试机构，气密性测试机构包括固定安装于工作台上的安装板31、Y轴滑动机构32、Z轴升降机构33和密封夹具34；Y轴滑动机构32包括导轨321、滑动座322和无杆气缸323，导轨沿Y轴方向固定安装于安装板上，滑动座322的底面上设有与导轨滑动配合的滑块；无杆气缸沿Y轴方向固定安装于安装板上并位于导轨的一侧；无杆气缸的外滑块与滑动座的一端固定连接；Z轴升降机构33包括设置于导轨上方的下压板331以及驱动下压板沿Z轴方向移动的Z轴驱动装置；密封夹具34包括上夹具341和下夹具342，上夹具341上设有上空腔3411，下夹具342上设有下空腔3421，上空腔和下空腔相对并配合形成测试腔，下夹具342上设有与测试腔连通的进气孔3422；上夹具以可拆卸的连接方式与下压板固定连接，下夹具以可拆卸的连接方式与滑动座固定连接；具体地，可拆卸的连接方式可以是螺钉连接或卡扣连接。优选地，下夹具还可以通过一过渡板与滑动座固定连接。
由无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，由Z轴驱动装置带动下压板及上夹具在Z轴方向下降或上升，使得上夹具与上夹具之间实现合模或开模。
本发明中，无杆气缸是指利用活塞直接或间接方式连接外界执行机构，并使其跟随活塞实现往复运动的气缸。这种气缸的最大优点是节省安装空间，具体地，无杆气缸为磁偶无杆气缸或机械式无杆气缸。
在本发明较佳的实施例中，导轨包括两个沿Y轴方向平行设置的导轨；与之对应，滑块的数量为两个，每个滑块与一个导轨滑动配合；滑动座322的底部向下延伸设有挡块；安装板上位于两个导轨之间的位置还设有两个提供Y轴方向的阻尼的缓冲装置41，安装板上在每个缓冲装置的一侧均设有一个位置传感器42；挡块位于两个缓冲装置之间且与两个缓冲装置位于同一Y轴轴线上；挡块能够在无杆气缸的带动下分别与两个缓冲装置相抵触。这样设计，由缓冲装置对滑动座提供Y轴方向的阻尼，能够防止产品在密封型腔中晃动或偏移，具有稳定性好的特点，另外无杆气缸、导轨、缓冲装置及位置传感器相互配合，能够进一步提高测试准确性和使得布局更加合理；尤其是当采用两组以上的气密性测试机构时，能够大大提高测试效率。具体地，缓冲装置包括固定座及安装于固定座上的缓冲器，缓冲器具体可以是液压缓冲器。
在本发明较佳的实施例中，机架包括上柜体11、下柜体12；工作台设置于下柜体的顶部作为下柜体的顶板；下柜体12从左向右分隔为第一下安装室121、第二下安装室122和第三下安装室123，第一下安装室内安装有电箱51，第二下安装室内安装有测试仪52，第三下安装室内安装有气动组件；具体地，气动组件包括通过管路连接的充气阀、保压阀、泄气阀；测试仪的气源接口连接充气阀，充气阀的出气端分别连接保压阀及泄气阀；保压阀连接密封模具的进气孔；更优选地，充气阀的进气口分别通过高压调节阀和低压调节阀与测试仪的气源接口连接。
上柜体11从前向后分隔为第一上柜体和第二上柜体，第二上柜体的高度大于第一上柜体的高度；第一上柜体包括矩形的第一上框架1111、设置在第一上框架的左侧面的第一上左侧封板1112、设置在第一上框架的右侧面的第一上右侧封板1113、设置于在第一上框架的顶面的第一上顶封板1114；第二上柜体包括矩形的第二上框架1121、设置在第二上框架1121的左侧面的第二上左侧封板1122、设置在第二上框架的右侧面的第二上右侧封板1123、设置于在第二上框架的顶面的第二上顶封板1124、设置于在第二上框架的背面的第二上背封板1125；第二上框架的前面高出第一上框架的部分安装有一体机固定板1126；气密性测试机构的数量为两组，它们并排设置在工作台上；其中，Z轴升降机构位于第二上柜体内；一体机固定板1126上安装有工控一体机61，第一上顶封板上安装有分别与工控一体机电性连接的键盘62及鼠标63。
机架采用上述设计，能够将各种不需要频繁操作的设备分别收纳于不同封闭空间内，方便调试维护，将工控一体机、键盘及鼠标放置于方便观看及方便操作的位置，具有布局合理、操作方便、防护效果好及外观美观的优点。
在本发明较佳的实施例中，第一上柜体内对应每组气密性测试机构均安装有一扫描枪71；工作台上对应每组气密性测试机构的前端均安装有一光栅传感器72。
在本发明较佳的实施例中，Z轴驱动装置包括通过四个支撑柱332安装在安装板上方的气缸固定板333、装设于气缸固定板上的下压气缸334；下压板设置在下压气缸的活塞杆下端，下压板与气缸固定板之间装设有下压导向机构；下压导向机构包括装设于下压板上的两个导柱335和装设于气缸固定板上的与导柱相配合的两个导套336，导柱从导套中穿过且导柱的上端高于气缸固定板的上表面。下压气缸采用大行程气缸，定位更准确，方便下压板下升或下降。 优选地，导套与气缸固定板之间还安装有限位件及缓冲器，缓冲器可以减少上夹具运动发出的噪音及起到压合缓冲的作用。限位件能够控制下压板的下降位置。
在本发明较佳的实施例中，上夹具和下夹具之间设有密封圈，密封圈位于测试腔外周侧；具体地，在上夹具上设置密封圈安装槽，密封圈嵌设于密封圈安装槽内。当上夹具和下夹具配合并连接后，可以保证上夹具和下夹具之间的密封性，保证测试腔的密封性，有利于提高对被测产品的测试准确性。
在本发明较佳的实施例中，下夹具342上设有定位孔3423，上夹具341的底部设有与定位孔相匹配的定位柱3412，定位柱在下降或上升过程中能够插入或脱离定位孔中，具有定位准确和拆装方便的优点。
本实施例中，以智能手表的上壳或底壳为被测产品进行气密性测试，具体测试方法如下：一种气密性测试装置的测试方法，包括以下步骤：准备环节；控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至装配工位后，将被测产品放入下夹具的下空腔中，然后继续控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，控制Z轴驱动装置带动下压板及上夹具在Z轴方向下降，使得上夹具与上夹具之间实现合模；将测试仪与密封夹具的进气孔连通；测试环节：由测试仪向测试腔中充入预设压力的压缩空气，经过预设的保压时间后，由测试仪检测出测试腔中的压力变化值，若压力变化值超出规定范围，则判定被测产品为气密性不合格产品；若压力变化值在规定的范围内，则判定被测产品为气密性合格产品。
在本发明较佳的实施例中，准备环节中，当下夹具移动至上夹具的正下方时，扫描枪对被测产品进行扫描及解码并将信号与数据库中的数据进行对比生成读码信号，无线通讯单元接收并传输读码信号到工控一体化机的显示装置上显示；测试环节中，通过光栅传感器对工作人员的操作区域进行实时检测，测试过程中，当有外物进入操作区域时，光栅传感器将检测信号发送工控一体化机，工控一体化机控制报警装置实现报警。
实施例2：参照图7-10，本实施例的特点在于：密封夹具还包括设于测试腔内且用于封堵被测产品上的透气孔的封堵部343、安装于下夹具上且用于驱动封堵部动作的驱动机构；封堵部343包括软胶仿型块，软胶仿型块具有与被测产品的透气孔配合的仿型贴合面；驱动机构包括与封堵部连接的滑块344、以及与滑块传动连接并用于驱动滑块动作的气缸组件345；下夹具上设有与测试腔贯通的滑槽，滑块与滑槽滑动配合。
本发明在测试腔内设置有用于封堵被测产品的透气孔的封堵部，通过驱动机构驱动封堵部对被测产品的透气孔进行自动封堵，封堵到位准确，不易松脱，密封性好，不会导致误测，有利于提高测试效率。软胶仿型块的材料可以是硅胶、橡胶或者其它柔性材料，本实施例不做局限。
其它与实施例1相同。
实施例3：参照图1，本实施例的特点是：上夹具或下夹具上设有与测试腔连通的分压气孔，第三下安装室内还设置有两个分压罐80，每个分压罐通过气路组件与一组气密性测试机构的分压气孔连通。具体地，气路组件包括分压阀，分压阀的一端与分压气孔连通，其另一端与分压罐连通。
本实施例中，以智能手表成品为被测产品进行气密性测试，具体测试方法如下：一种气密性测试装置的测试方法，包括以下步骤：准备环节：控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至装配工位后，将被测产品放入下夹具的下空腔中，然后继续控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，控制Z轴驱动装置带动下压板及上夹具在Z轴方向下降，使得上夹具与上夹具之间实现合模；将测试仪与密封夹具的进气孔连通；小漏测试环节：由测试仪向测试腔中充入预设压力的压缩空气，经过预设的保压时间后，由测试仪检测出测试腔中的压力变化值，若压力变化值超出规定范围，则判定被测产品为小漏不合格产品，进入排气环节；若压力变化值在规定的范围内，则判定被测产品为小漏合格产品，进入大漏测试环节；大漏测试环节：打开分压阀，测试腔中的气体进入至分压罐中，经过预设的平衡时间后，由测试仪检测出分压罐中的压力变化值，若压力变化值超出规定范围，则判定被测产品为大漏不合格产品；若压力变化值在规定的范围内，则判定被测产品为大漏合格产品。
其它与实施例1相同。
其它实施例：气密性测试机构的数量可以为1组、3组、4组或更多组，具体可以根据实际需要进行调整。测试仪采用现有技术中的产品，具体可以是采用广州阿普顿自动化系统有限公司生产的型号为CD300的测试仪，用于测试智能手表成品；采用广州阿普顿自动化系统有限公司生产的型号为UT811S的测试仪，用于测试智能手表的半成品，如上壳和底壳等。虽然仅仅已经对本申请的某些部件和实施例进行了图示并且描述，但是在不实际脱离在权利要求书中的范围和精神的情况下，本领域技术人员可以想到许多修改和改变(例如，各个元件的大小、尺寸、结构、形状和比例、安装布置、材料使用、颜色、取向等的变化)。
最后应说明的是：上述实施方式仅为本发明的优选实施例方式，不能以此来限定本发明保护的范围，本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。

Claims (10)

  1. 气密性测试装置，包括机架，所述机架上设置有水平的工作台，所述工作台的长度方向为X轴方向，所述工作台的宽度方向Y轴方向，所述工作台的高度方向为Z轴方向；其特征在于：所述工作台上设置有至少一组气密性测试机构，所述气密性测试机构包括固定安装于所述工作台上的安装板、Y轴滑动机构、Z轴升降机构和密封夹具；所述Y轴滑动机构包括导轨、滑动座和无杆气缸，所述导轨沿Y轴方向固定安装于所述安装板上，所述滑动座的底面上设有与所述导轨滑动配合的滑块；所述无杆气缸沿Y轴方向固定安装于所述安装板上并位于导轨的一侧；所述无杆气缸的外滑块与所述滑动座的一端固定连接；所述Z轴升降机构包括设置于所述导轨上方的下压板以及驱动下压板沿Z轴方向移动的Z轴驱动装置；所述密封夹具包括上夹具和下夹具，所述上夹具上设有上空腔，所述下夹具上设有下空腔，所述上空腔和下空腔相对并配合形成测试腔，所述上夹具或下夹具上设有与所述测试腔连通的进气孔；所述上夹具以可拆卸的连接方式与所述下压板固定连接，所述下夹具以可拆卸的连接方式与所述滑动座固定连接；由无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，由Z轴驱动装置带动下压板及上夹具在Z轴方向下降或上升，使得上夹具与上夹具之间实现合模或开模。
  2. 根据权利要求1所述的气密性测试装置，其特征在于：所述导轨包括两个沿Y轴方向平行设置的导轨；与之对应，所述滑块的数量为两个，每个所述滑块与一个所述导轨滑动配合；所述滑动座的底部向下延伸设有挡块；所述安装板上位于两个导轨之间的位置还设有两个提供Y轴方向的阻尼的缓冲装置，所述安装板上在每个缓冲装置的一侧均设有一个位置传感器；所述挡块位于两个缓冲装置之间且与两个缓冲装置位于同一Y轴轴线上；所述挡块能够在无杆气缸的带动下分别与两个缓冲装置相抵触。
  3. 根据权利要求1所述的气密性测试装置，其特征在于：所述机架包括上柜体、下柜体；所述工作台设置于下柜体的顶部作为下柜体的顶板；所述下柜体从左向右分隔为第一下安装室、第二下安装室和第三下安装室，所述第一下安装室内安装有电箱，所述第二下安装室内安装有测试仪，所述第三下安装室内安装有气动组件；所述上柜体从前向后分隔为第一上柜体和第二上柜体，第二上柜体的高度大于第一上柜体的高度；所述第一上柜体包括矩形的第一上框架、设置在第一上框架的左侧面的第一上左侧封板、设置在第一上框架的右侧面的第一上右侧封板、设置于在第一上框架的顶面的第一上顶封板；所述第二上柜体包括矩形的第二上框架、设置在第二上框架的左侧面的第二上左侧封板、设置在第二上框架的右侧面的第二上右侧封板、设置于在第二上框架的顶面的第二上顶封板、设置于在第二上框架的背面的第二上背封板；第二上框架的前面高出第一上框架的部分安装有一体机固定板；所述气密性测试机构的数量为两组，它们并排设置在工作台上；其中，Z轴升降机构位于第二上柜体内；所述一体机固定板上安装有工控一体机，所述第一上顶封板上安装有分别与所述工控一体机电性连接的键盘及鼠标。
  4. 根据权利要求3所述的气密性测试装置，其特征在于：所述上夹具或下夹具上设有与所述测试腔连通的分压气孔，所述第三下安装室内还设置有两个分压罐，每个分压罐通过气路组件与一组气密性测试机构的分压气孔连通。
  5. 根据权利要求3所述的气密性测试装置，其特征在于：所述第一上柜体内对应每组气密性测试机构均安装有一扫描枪；或者是，所述工作台上对应每组气密性测试机构的前端均安装有一光栅传感器。
  6. 根据权利要求1所述的气密性测试装置，其特征在于：所述Z轴驱动装置包括通过支撑柱安装在安装板上方的气缸固定板、装设于气缸固定板上的下压气缸；所述下压板设置在下压气缸的活塞杆下端，所述下压板与气缸固定板之间装设有下压导向机构；所述下压导向机构包括两个分别装设于下压板上的导柱和两个分别装设于气缸固定板上的与导柱相配合的导套，所述导柱从导套中穿过且导柱的上端高于气缸固定板的上表面。
  7. 根据权利要求1所述的气密性测试装置，其特征在于：所述上夹具和下夹具之间设有密封圈，所述密封圈位于所述测试腔外周侧；所述下夹具上设有定位孔，所述上夹具的底部设有与所述定位孔相匹配的定位柱，所述定位柱在下降或上升过程中能够插入或脱离所述定位孔中。
  8. 根据权利要求7所述的气密性测试装置，其特征在于：所述密封夹具还包括设于所述测试腔内且用于封堵被测产品上的透气孔的封堵部、安装于所述下夹具上且用于驱动所述封堵部动作的驱动机构；所述封堵部包括软胶仿型块，所述软胶仿型块具有与所述被测产品的透气孔配合的仿型贴合面；所述驱动机构包括与所述封堵部连接的滑块、以及与所述滑块传动连接并用于驱动所述滑块动作的气缸组件；所述下夹具上设有与所述测试腔贯通的滑槽，所述滑块与所述滑槽滑动配合。
  9. 一种如权利要求1-8任意一项所述的气密性测试装置的测试方法，其特征在于：包括以下步骤：准备环节；控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至装配工位后，将被测产品放入下夹具的下空腔中，然后继续控制无杆气缸带动滑动座及下夹具在导轨上沿Y轴方向滑动，当下夹具移动至上夹具的正下方时，控制Z轴驱动装置带动下压板及上夹具在Z轴方向下降，使得上夹具与上夹具之间实现合模；将测试仪与密封夹具的进气孔连通；测试环节，测试环节包括以下两种测试方式中的任意一种：测试方式一：由测试仪向测试腔中充入预设压力的压缩空气，经过预设的保压时间后，由测试仪检测出测试腔中的压力变化值，若压力变化值超出规定范围，则判定被测产品为气密性不合格产品；若压力变化值在规定的范围内，则判定被测产品为气密性合格产品；测试方式二：小漏测试环节：由测试仪向测试腔中充入预设压力的压缩空气，经过预设的保压时间后，由测试仪检测出测试腔中的压力变化值，若压力变化值超出规定范围，则判定被测产品为小漏不合格产品，进入排气环节；若压力变化值在规定的范围内，则判定被测产品为小漏合格产品，进入大漏测试环节；大漏测试环节：打开分压阀，测试腔中的气体进入至分压罐中，经过预设的平衡时间后，由测试仪检测出分压罐中的压力变化值，若压力变化值超出规定范围，则判定被测产品为大漏不合格产品；若压力变化值在规定的范围内，则判定被测产品为大漏合格产品。
  10. 根据权利要求9所述的气密性测试装置的测试方法，其特征在于：准备环节中，当下夹具移动至上夹具的正下方时，扫描枪对被测产品进行扫描及解码并将信号与数据库中的数据进行对比生成读码信号，无线通讯单元接收并传输读码信号到工控一体化机的显示装置上显示；或者是，测试环节中，通过光栅传感器对工作人员的操作区域进行实时检测，测试过程中，当有外物进入操作区域时，光栅传感器将检测信号发送工控一体化机，工控一体化机控制报警装置实现报警。
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