Helium detection device and method for closed container

Abstract

The invention discloses a helium detection device and method for a closed container, and aims to overcome the defects that the helium detection efficiency of the closed container is low, and the surface of a product is easily scratched. The device comprises a rack, a workbench and a plurality of movably-arranged blind plates are installed on the rack, a closed container is loaded and positioned on the workbench, the blind plates correspond to windows formed in the closed container, a plurality of press-fitting positioning grooves are formed in the blind plates, and positioning pins are loaded in the press-fitting positioning grooves. And the blind plate moves towards the window to seal the window and simultaneously presses the positioning pin on the sealed container. According to the helium detection device for the closed container, the helium detection operation of the closed container is facilitated, the working efficiency is improved, and the probability of scratching the surface of the container is reduced.

Description

Technical Field

[0001] The present invention relates to a gas tightness detection technology for a container, and more specifically, to a helium detection device and method for a closed container. Background Art

[0002] In the production of enterprises, some batch products are classified as enterprise standard products. However, due to the independence of each product, each product needs to be inspected with helium. However, it takes a long time to inspect each product with helium, and most of the time is spent on repeatedly installing and removing blind plates, which wastes a lot of time. Manually disassembling blind plates makes batch product inspection inefficient. Multiple installations of screws can easily damage the surface of the product, making it difficult to store and move. When inspecting the quartz glass observation window with helium, manually tightening the screws can easily cause uneven force on the glass, resulting in damage to the glass. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a closed container helium inspection device and method, which facilitates the helium inspection operation of the closed container, helps to improve work efficiency, and reduces the probability of scratching the container surface.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a closed container helium detection device, including a frame, a workbench and a plurality of movably arranged blind plates are installed on the frame, the closed container is loaded and positioned on the workbench, the blind plate corresponds to the window set on the sealed container, a plurality of press-fit positioning grooves are provided on the blind plate, the press-fit positioning grooves are loaded with positioning pins, the blind plate moves toward the window to close the window and presses the positioning pins onto the sealed container at the same time.

[0005] Before the helium inspection of the sealed container, the window on it needs to be sealed, and after the helium inspection is completed, a positioning pin needs to be installed on the edge of the window. In the technical solution of the present application, the positioning pin is installed while the helium inspection is being carried out. The window is closed by a blind plate. Specifically, before the blind plate is moved, one end of the positioning pin is first inserted and positioned into the press-fit positioning groove on the blind plate, and the observation window is installed to the corresponding window position on the sealed container. Finally, the blind plate is moved toward the window to close the window while the positioning pin is pressed onto the sealed container. After that, helium can be introduced for helium inspection.

[0006] The closing of the window on the sealed container is automatically completed by the blind plate, and the blind plate closes the window while realizing the installation of the positioning pin. The blind plate and the sealed container do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process, and avoiding the situation where the observation window is damaged due to uneven force when tightening the screws in the case of an observation window. The sealed container helium inspection device of this patent application facilitates the helium inspection operation of the sealed container, is conducive to improving work efficiency, and reduces the probability of scratching the container surface.

[0007] Preferably, a clamping mechanism is installed on the workbench, and the clamping mechanism clamps and positions the sealed container.

[0008] After the closed container is loaded onto the workbench, it is clamped and positioned through a clamping mechanism to ensure its stability, which is beneficial to the reliability of the helium inspection operation.

[0009] Preferably, the clamping mechanism includes a lifting block and a plurality of sliders slidably mounted on a workbench, a connecting rod is hinged between the slider and the lifting block, a clamping block is installed on the slider, the lifting block is connected to a clamping piston cylinder, and the clamping block is clamped on a closed container.

[0010] After the sealed container is loaded onto the workbench, the clamping piston cylinder drives the lifting block downward, and pulls the slider toward the sealed container through the connecting rod, so that the clamping block is clamped to the outer wall of the sealed container to achieve the clamping and positioning of the sealed container. The clamping piston cylinder drives the lifting block upward, drives the slider to move in the opposite direction, and the clamping block is separated from the sealed container, removing the clamping and positioning of the sealed container by the clamping mechanism.

[0011] Preferably, the clamping block is slidably mounted on the sliding block, and a locking screw is connected between the clamping block and the sliding block.

[0012] The clamping block is set to slide and can adjust its position according to the specifications of the sealed container, ensuring that each clamping block can clamp the sealed container synchronously. After the clamping block is adjusted to the right position, it is locked in place by the locking screw, and the positioning is reliable.

[0013] Preferably, a vertical piston cylinder and a transverse piston cylinder are installed on the frame, and the telescopic rod of the vertical piston cylinder and the telescopic rod of the transverse piston cylinder are both connected to a blind plate.

[0014] The vertical piston cylinder moves vertically to push the vertically set blind plate to press against the closed container, and the horizontal piston cylinder moves horizontally to push the horizontally set blind plate to press against the closed container. The blind plate is driven by the piston cylinder, which is stable and reliable.

[0015] Preferably, a slide plate is installed on the frame, a long strip adjustment groove is provided on the slide plate, a transverse piston cylinder is installed on the slide plate, a connecting column is provided on the transverse piston cylinder, the connecting column is movably plug-in connected to the adjustment groove, a locking sleeve is connected to the connecting column, and the locking sleeve abuts against the slide plate to tighten the transverse piston cylinder.

[0016] The transverse piston cylinder is installed on the slide plate and can be adjusted laterally along the adjustment groove, so that the blind plate can be aligned with the window on the sealed container, thereby adapting to the helium inspection operation of sealed containers of different specifications. The connecting column on the transverse piston cylinder slides smoothly and reliably in the adjustment groove on the slide plate. After sliding into place, the locking sleeve realizes the locking and positioning of the connecting column.

[0017] Preferably, an adjusting piston cylinder is installed on the frame, a telescopic rod of the adjusting piston cylinder is connected to the slide plate, a guide rail is installed on the frame, and two ends of the slide plate are slidably connected to the guide rail.

[0018] The regulating piston cylinder drives the slide plate to move vertically. During the vertical movement of the slide plate, the goose-shaped guide rails at both ends of the slide plate slide stably and reliably.

[0019] Preferably, a press-fitting hole is provided on the blind plate, one end of which is threadedly connected to the adjusting column, the space between the open end of the press-fitting hole and the end of the adjusting column forms a press-fitting positioning groove, a touch switch is provided at the end of the adjusting column, and a plurality of radially movable centering plates are evenly distributed on the side wall of the press-fitting hole. A driving ring and a driving electromagnet are installed at the position of the press-fitting hole on the blind plate. When the positioning pin touches the touch switch, the driving electromagnet is energized to attract the driving ring, thereby pushing the centering plate to move radially and clamp the positioning pin to position it.

[0020] When the locating pin is loaded into the press-fitting locating groove, the end of the locating pin touches the touch switch. After the controller receives the signal, it energizes the driving electromagnet, attracts the driving ring to move, and thus pushes the centering plate to move radially to clamp the locating pin and position it, ensuring the accuracy of the loading position of the locating pin. The adjusting column is threadedly connected to the press-fitting hole, and the depth of the press-fitting locating groove is adjusted according to the depth of the locating pin press-fitting, which facilitates the press-fitting operation of the locating pin.

[0021] Preferably, a universal ball head is arranged on the back of the blind plate, the universal ball head is connected to the fixed column, a connecting groove is arranged on the fixed column, the universal ball head is adaptably connected to the connecting groove, a movably arranged locking column is installed on the fixed column, a movable locking tooth is arranged on the end of the locking column, and a plurality of universal locking teeth are densely covered on the outer surface of the universal ball head. After the blind plate is universally rotated and adjusted into place, the locking column moves to make the movable locking teeth engage with the universal locking teeth to realize the positioning of the blind plate.

[0022] Before helium inspection, the blind plate is moved toward the window on the sealed container. At this time, it cannot be guaranteed that the surface of the blind plate is completely aligned with the surface of the sealed container. After the blind plate is attached to the surface of the sealed container, the blind plate can rotate in all directions due to the universal ball head set on the blind plate, and the posture is adjusted adaptively to ensure that the surface of the blind plate and the surface of the sealed container are completely attached and sealed. At this time, the locking column is moved so that the movable lock teeth on the locking column are engaged with the universal lock teeth on the universal ball head to realize the positioning of the blind plate. Through this structural setting, the blind plate can be fine-tuned to ensure the sealing after the blind plate covers the window.

[0023] A closed container helium inspection method is used to perform inspection using a closed container helium inspection device, and comprises the following steps: S1, loading the closed container onto a workbench; S2, loading a positioning pin into a press-fit positioning groove of a blind plate, and installing an observation window to a corresponding window position on the closed container; S3, moving the blind plate toward the window, press-fitting the positioning pin onto the closed container, and closing the window on the closed container; S4, passing helium into the closed container for airtightness inspection.

[0024] Before helium is introduced into the sealed container, the window on the sealed container is automatically closed by the blind plate, and the blind plate closes the window while installing the positioning pin. The blind plate and the sealed container do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process and avoiding the situation where the observation window is damaged due to uneven force when tightening the screws when there is an observation window.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The closed container helium inspection device of the present patent application facilitates the helium inspection operation of the closed container, is conducive to improving work efficiency, and reduces the probability of scratching the container surface; (2) The closing of the window on the closed container is automatically completed by the blind plate, and the blind plate closes the window while realizing the installation of the positioning pin, and the blind plate and the closed container do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process, and avoiding the situation where the observation window is damaged due to uneven force when tightening the screws when there is an observation window; (3) After the closed container is loaded onto the workbench, it is clamped and positioned by the clamping mechanism to ensure its stability, which is conducive to the reliability of the helium inspection operation; (4) The blind plate can adjust its position to adapt to the helium inspection operation of closed containers of different specifications; (5) The blind plate can be universally rotated to fine-tune its position to ensure the sealing of the blind plate after covering the window; (6) After the positioning pin is loaded into the press-fit positioning groove, the centering operation can be realized to ensure the accuracy of the positioning pin loading position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a side view of Example 1 of the present invention.

[0027] Figure 2 It is a schematic diagram of the clamping mechanism of the present invention without being installed.

[0028] Figure 3 It is a side view of Example 2 of the present invention.

[0029] Figure 4 It is a schematic diagram of the blind plate structure of embodiment 3 of the present invention.

[0030] Figure 5 The present invention Figure 4 A partial enlarged view of the press-fit positioning groove.

[0031] Figure 6 It is a schematic diagram of the blind plate structure of embodiment 4 of the present invention.

[0032] In the figure: 1, frame, 2, workbench, 3, blind plate, 4, universal wheel, 5, closed container, 6, window, 7, press-fit positioning groove, 8, lifting block, 9, slider, 10, connecting rod, 11, clamping block, 12, clamping piston cylinder, 13, limit groove, 14, adjustment slide groove, 15, sliding part, 16, in-place switch, 17, vertical piston cylinder, 18, horizontal piston cylinder, 19, top plate, 20, slide plate, 21, adjustment groove, 22, connecting column, 23, locking sleeve, 24, adjustment Sectional piston cylinder, 25, guide rail, 26, connecting block, 27, adjusting column, 28, touch switch, 29, centering plate, 30, guide groove, 31, driving ring, 32, driving electromagnet, 33, guide column, 34, avoidance groove, 35, positioning spring, 36, positioning ring, 37, suction electromagnet, 38, universal ball head, 39, fixing column, 40, connecting groove, 41, locking column, 42, movable locking tooth, 43, universal locking tooth, 44, adjusting sleeve, 45, push-pull rod, 46, ring groove. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: A closed container helium detection device (see attached Figure 1 , Attachment Figure 2 ), including a frame 1, a workbench 2 and a plurality of movable blind plates 3 are installed on the frame 1, and a universal wheel 4 with a brake is installed at the bottom of the frame 1 to facilitate the transportation of the entire frame 1. The closed container 5 is loaded and positioned on the workbench 2, and a clamping mechanism is installed on the workbench 2, and the clamping mechanism clamps and positions the closed container 5. The blind plate 3 corresponds to the window 6 set on the sealed container, and a plurality of press-fit positioning grooves 7 are provided on the blind plate 3, and the press-fit positioning grooves 7 are arranged near the edge of the blind plate 3. The press-fit positioning groove 7 is open at one end and closed at the other end. The press-fit positioning groove 7 is loaded with a positioning pin, and the blind plate 3 moves toward the window 6 to close the window 6 while pressing the positioning pin onto the sealed container.

[0034] The clamping mechanism includes a lifting block 8 and a plurality of sliders 9 slidably mounted on the workbench 2, a connecting rod 10 is hinged between the slider 9 and the lifting block 8, a clamping block 11 is installed on the slider 9, the lifting block 8 is connected to the clamping piston cylinder 12, and the clamping block 11 is clamped on the sealed container 5. Limiting grooves 13 are arranged on the workbench 2 and correspond to the slider 9, the slider 9 is adaptively connected to the limiting grooves 13, and protrusions are arranged on the upper and lower sides of the slider 9, and the two protrusions are respectively attached to the upper surface and the lower surface of the workbench 2. In this embodiment, four sliders 9 are arranged, and the four sliders 9 are respectively arranged in the four directions of the front, back, left and right of the sealed container 5. The lifting block 8 is arranged below the workbench 2, and the lifting block 8 is fastened to the telescopic rod of the clamping piston cylinder 12. The connecting rod 10 is obliquely connected between the lifting block 8 and the slider 9.

[0035] The clamping block 11 is slidably mounted on the slider 9, and a locking screw is connected between the clamping block 11 and the slider 9. An adjustment slot 14 is provided on the slider 9, and the adjustment slot 14 is in an inverted T-shaped structure. A sliding portion 15 adapted to the adjustment slot 14 is provided at the lower part of the clamping block 11, and the sliding portion 15 is in an inverted T-shaped structure. The locking screw is connected to the sliding portion 15, and the end of the sliding portion 15 abuts against the bottom surface of the adjustment slot 14. Position switches 16 are installed on the workbench 2 near the left and right sides of the sealed container 5, and the position switches 16 are used to determine whether the sealed container 5 is clamped in place.

[0036] A vertical piston cylinder 17 and a transverse piston cylinder 18 are installed on the frame 1, and the telescopic rod of the vertical piston cylinder 17 and the telescopic rod of the transverse piston cylinder 18 are both connected to the blind plate 3. The telescopic rod of the vertical piston cylinder 17 is arranged vertically, and the telescopic rod of the transverse piston cylinder 18 is arranged horizontally. A top plate 19 is arranged on the top of the frame 1, and the vertical piston cylinder 17 is installed on the top plate 19. A bottom plate is arranged at the lower part of the frame 1, and the clamping piston cylinder 12 is installed on the bottom plate. A slide plate 20 is installed on the frame 1, and the slide plate 20 is in an L-shaped structure. A long strip-shaped adjustment groove 21 is arranged on the slide plate 20, and the transverse piston cylinder 18 is installed on the slide plate 20. A connecting column 22 is arranged on the transverse piston cylinder 18, and the connecting column 22 is movably plug-in connected to the adjustment groove 21. A locking sleeve 23 is connected to the connecting column 22, and the locking sleeve 23 abuts against the slide plate 20 to tighten the transverse piston cylinder 18.

[0037] A closed container helium inspection method is used for inspection by a closed container helium inspection device, comprising the following steps: S1, loading the closed container 5 onto a workbench 2, the clamping mechanism works, the telescopic rod of the clamping piston cylinder 12 retracts, thereby driving the slider 9 to move toward the closed container 5, and the clamping block 11 clamps the closed container 5; S2, loading a positioning pin into the press-fitting positioning groove 7 of the blind plate 3, and installing the observation window to the corresponding window 6 position on the closed container 5; S3, the horizontal piston cylinder 18 and the vertical piston cylinder 17 work, driving the blind plate 3 to move toward the window 6, press-fitting the positioning pin into the positioning hole on the closed container 5, and closing the window 6 on the closed container 5; S4, passing helium into the closed container 5 for airtightness inspection.

[0038] The window 6 on the sealed container 5 needs to be sealed before the helium inspection, and a positioning pin needs to be installed on the edge of the window 6 after the helium inspection is completed. In the technical solution of the present application, the positioning pin is installed while the helium inspection is being carried out. The closing of the window 6 is achieved by the blind plate 3. Specifically, before the blind plate 3 is moved, one end of the positioning pin is first inserted and positioned in the press-fit positioning groove 7 on the blind plate 3, and the observation window is installed to the corresponding window 6 position on the sealed container 5, and finally the blind plate 3 is moved toward the window 6 to close the window 6 while the positioning pin is pressed onto the sealed container. After that, helium can be introduced for the helium inspection operation.

[0039] The closing of the window 6 on the sealed container 5 is automatically completed by the blind plate 3, and the blind plate 3 closes the window 6 while realizing the installation of the positioning pin, and the blind plate 3 and the sealed container 5 do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process, and avoiding the situation where the observation window is damaged due to uneven force of screwing in the case of an observation window. The sealed container 5 helium inspection device of this patent application facilitates the helium inspection operation of the sealed container 5, is conducive to improving work efficiency, and reduces the probability of scratching the container surface.

[0040] Example 2: A closed container helium detection device (see attached Figure 3 ), including a frame 1, a workbench 2 and a plurality of movable blind plates 3 are installed on the frame 1, and a universal wheel 4 with a brake is installed at the bottom of the frame 1 to facilitate the transportation of the entire frame 1. The closed container 5 is loaded and positioned on the workbench 2, and a clamping mechanism is installed on the workbench 2, and the clamping mechanism clamps and positions the closed container 5. The blind plate 3 corresponds to the window 6 set on the sealed container, and a plurality of press-fit positioning grooves 7 are provided on the blind plate 3, and the press-fit positioning grooves 7 are arranged near the edge of the blind plate 3. The press-fit positioning groove 7 is open at one end and closed at the other end. The press-fit positioning groove 7 is loaded with a positioning pin, and the blind plate 3 moves toward the window 6 to close the window 6 while pressing the positioning pin onto the sealed container.

[0041] The clamping mechanism includes a lifting block 8 and a plurality of sliders 9 slidably mounted on the workbench 2, a connecting rod 10 is hinged between the slider 9 and the lifting block 8, a clamping block 11 is installed on the slider 9, the lifting block 8 is connected to the clamping piston cylinder 12, and the clamping block 11 is clamped on the sealed container 5. Limiting grooves 13 are arranged on the workbench 2 and correspond to the slider 9, the slider 9 is adaptively connected to the limiting grooves 13, and protrusions are arranged on the upper and lower sides of the slider 9, and the two protrusions are respectively attached to the upper surface and the lower surface of the workbench 2. In this embodiment, four sliders 9 are arranged, and the four sliders 9 are respectively arranged in the four directions of the front, back, left and right of the sealed container 5. The lifting block 8 is arranged below the workbench 2, and the lifting block 8 is fastened to the telescopic rod of the clamping piston cylinder 12. The connecting rod 10 is obliquely connected between the lifting block 8 and the slider 9.

[0042] The clamping block 11 is slidably mounted on the slider 9, and a locking screw is connected between the clamping block 11 and the slider 9. An adjustment slot 14 is provided on the slider 9, and the adjustment slot 14 is in an inverted T-shaped structure. A sliding portion 15 adapted to the adjustment slot 14 is provided at the lower part of the clamping block 11, and the sliding portion 15 is in an inverted T-shaped structure. The locking screw is connected to the sliding portion 15, and the end of the sliding portion 15 abuts against the bottom surface of the adjustment slot 14. Position switches 16 are installed on the workbench 2 near the left and right sides of the sealed container 5, and the position switches 16 are used to determine whether the sealed container 5 is clamped in place.

[0043] A vertical piston cylinder 17 and a transverse piston cylinder 18 are installed on the frame 1, and the telescopic rod of the vertical piston cylinder 17 and the telescopic rod of the transverse piston cylinder 18 are both connected to the blind plate 3. The telescopic rod of the vertical piston cylinder 17 is arranged vertically, and the telescopic rod of the transverse piston cylinder 18 is arranged horizontally. A top plate 19 is arranged on the top of the frame 1, and the vertical piston cylinder 17 is installed on the top plate 19. A bottom plate is arranged at the lower part of the frame 1, and the clamping piston cylinder 12 is installed on the bottom plate. A slide plate 20 is installed on the frame 1, and the slide plate 20 is in an L-shaped structure. A long strip-shaped adjustment groove 21 is arranged on the slide plate 20, and the transverse piston cylinder 18 is installed on the slide plate 20. A connecting column 22 is arranged on the transverse piston cylinder 18, and the connecting column 22 is movably plug-in connected to the adjustment groove 21. A locking sleeve 23 is connected to the connecting column 22, and the locking sleeve 23 abuts against the slide plate 20 to tighten the transverse piston cylinder 18.

[0044] An adjusting piston cylinder 24 is installed on the frame 1. The adjusting piston cylinder 24 is arranged vertically. The telescopic rod of the adjusting piston cylinder 24 is connected to the slide plate 20. A guide rail 25 is installed on the frame 1. Both ends of the slide plate 20 are slidably connected to the guide rail 25. A connecting block 26 is arranged in the middle of the slide plate 20. The connecting block 26 is tightly connected to the telescopic rod of the adjusting piston cylinder 24. A sliding groove is arranged on the guide rail 25. Both ends of the slide plate 20 are respectively inserted into the two sliding grooves. After the slide plate 20 is lifted and moved into position, a screw is connected to the guide rail 25. The end of the screw abuts against the slide plate 20 to realize the positioning of the slide plate 20. The height of the slide plate 20 is adjusted to adapt to the helium inspection operation of the sealed container 5 of different specifications.

[0045] A closed container helium inspection method is used for inspection by a closed container helium inspection device, comprising the following steps: S1, loading the closed container 5 onto a workbench 2, the clamping mechanism works, the telescopic rod of the clamping piston cylinder 12 retracts, thereby driving the slider 9 to move toward the closed container 5, and the clamping block 11 clamps the closed container 5; S2, loading a positioning pin into the press-fitting positioning groove 7 of the blind plate 3, and installing the observation window to the corresponding window 6 position on the closed container 5; S3, the horizontal piston cylinder 18 and the vertical piston cylinder 17 work, driving the blind plate 3 to move toward the window 6, press-fitting the positioning pin into the positioning hole on the closed container 5, and closing the window 6 on the closed container 5; S4, passing helium into the closed container 5 for airtightness inspection.

[0046] The window 6 on the sealed container 5 needs to be sealed before the helium inspection, and a positioning pin needs to be installed on the edge of the window 6 after the helium inspection is completed. In the technical solution of the present application, the positioning pin is installed while the helium inspection is being carried out. The closing of the window 6 is achieved by the blind plate 3. Specifically, before the blind plate 3 is moved, one end of the positioning pin is first inserted and positioned in the press-fit positioning groove 7 on the blind plate 3, and the observation window is installed to the corresponding window 6 position on the sealed container 5, and finally the blind plate 3 is moved toward the window 6 to close the window 6 while the positioning pin is pressed onto the sealed container. After that, helium can be introduced for the helium inspection operation.

[0047] The closing of the window 6 on the sealed container 5 is automatically completed by the blind plate 3, and the blind plate 3 closes the window 6 while realizing the installation of the positioning pin, and the blind plate 3 and the sealed container 5 do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process, and avoiding the situation where the observation window is damaged due to uneven force of screwing in the case of an observation window. The sealed container 5 helium inspection device of this patent application facilitates the helium inspection operation of the sealed container 5, is conducive to improving work efficiency, and reduces the probability of scratching the container surface.

[0048] Example 3: A closed container helium detection device (see attached Figure 4 , Attachment Figure 5 ), including a frame 1, a workbench 2 and a plurality of movable blind plates 3 are installed on the frame 1, and a universal wheel 4 with a brake is installed at the bottom of the frame 1 to facilitate the transportation of the entire frame 1. The closed container 5 is loaded and positioned on the workbench 2, and a clamping mechanism is installed on the workbench 2, and the clamping mechanism clamps and positions the closed container 5. The blind plate 3 corresponds to the window 6 set on the sealed container, and a plurality of press-fit positioning grooves 7 are provided on the blind plate 3, and the press-fit positioning grooves 7 are arranged near the edge of the blind plate 3. The press-fit positioning groove 7 is open at one end and closed at the other end. The press-fit positioning groove 7 is loaded with a positioning pin, and the blind plate 3 moves toward the window 6 to close the window 6 while pressing the positioning pin onto the sealed container.

[0049] The clamping mechanism includes a lifting block 8 and a plurality of sliders 9 slidably mounted on the workbench 2, a connecting rod 10 is hinged between the slider 9 and the lifting block 8, a clamping block 11 is installed on the slider 9, the lifting block 8 is connected to the clamping piston cylinder 12, and the clamping block 11 is clamped on the sealed container 5. Limiting grooves 13 are arranged on the workbench 2 and correspond to the slider 9, the slider 9 is adaptively connected to the limiting grooves 13, and protrusions are arranged on the upper and lower sides of the slider 9, and the two protrusions are respectively attached to the upper surface and the lower surface of the workbench 2. In this embodiment, four sliders 9 are arranged, and the four sliders 9 are respectively arranged in the four directions of the front, back, left and right of the sealed container 5. The lifting block 8 is arranged below the workbench 2, and the lifting block 8 is fastened to the telescopic rod of the clamping piston cylinder 12. The connecting rod 10 is obliquely connected between the lifting block 8 and the slider 9.

[0050] The clamping block 11 is slidably mounted on the slider 9, and a locking screw is connected between the clamping block 11 and the slider 9. An adjustment slot 14 is provided on the slider 9, and the adjustment slot 14 is in an inverted T-shaped structure. A sliding portion 15 adapted to the adjustment slot 14 is provided at the lower part of the clamping block 11, and the sliding portion 15 is in an inverted T-shaped structure. The locking screw is connected to the sliding portion 15, and the end of the sliding portion 15 abuts against the bottom surface of the adjustment slot 14. Position switches 16 are installed on the workbench 2 near the left and right sides of the sealed container 5, and the position switches 16 are used to determine whether the sealed container 5 is clamped in place.

[0051] A vertical piston cylinder 17 and a transverse piston cylinder 18 are installed on the frame 1, and the telescopic rod of the vertical piston cylinder 17 and the telescopic rod of the transverse piston cylinder 18 are both connected to the blind plate 3. The telescopic rod of the vertical piston cylinder 17 is arranged vertically, and the telescopic rod of the transverse piston cylinder 18 is arranged horizontally. A top plate 19 is arranged on the top of the frame 1, and the vertical piston cylinder 17 is installed on the top plate 19. A bottom plate is arranged at the lower part of the frame 1, and the clamping piston cylinder 12 is installed on the bottom plate. A slide plate 20 is installed on the frame 1, and the slide plate 20 is in an L-shaped structure. A long strip-shaped adjustment groove 21 is arranged on the slide plate 20, and the transverse piston cylinder 18 is installed on the slide plate 20. A connecting column 22 is arranged on the transverse piston cylinder 18, and the connecting column 22 is movably plug-in connected to the adjustment groove 21. A locking sleeve 23 is connected to the connecting column 22, and the locking sleeve 23 abuts against the slide plate 20 to tighten the transverse piston cylinder 18.

[0052] An adjusting piston cylinder 24 is installed on the frame 1. The adjusting piston cylinder 24 is arranged vertically. The telescopic rod of the adjusting piston cylinder 24 is connected to the slide plate 20. A guide rail 25 is installed on the frame 1. Both ends of the slide plate 20 are slidably connected to the guide rail 25. A connecting block 26 is arranged in the middle of the slide plate 20. The connecting block 26 is tightly connected to the telescopic rod of the adjusting piston cylinder 24. A sliding groove is arranged on the guide rail 25. Both ends of the slide plate 20 are respectively inserted into the two sliding grooves. After the slide plate 20 is lifted and moved into position, a screw is connected to the guide rail 25. The end of the screw abuts against the slide plate 20 to realize the positioning of the slide plate 20. The height of the slide plate 20 is adjusted to adapt to the helium inspection operation of the sealed container 5 of different specifications.

[0053] A press-fitting hole is provided on the blind plate 3, one end of which is threadedly connected to the adjusting column 27, and the space between the open end of the press-fitting hole and the end of the adjusting column 27 forms a press-fitting positioning groove 7, and a touch switch 28 is provided at the end of the adjusting column 27. A plurality of radially movable centering plates 29 are evenly distributed on the side wall of the press-fitting hole, and an inclined guide groove 30 is provided on the centering plate 29. A driving ring 31 and a driving electromagnet 32 ​​are installed at the position of the press-fitting hole on the blind plate 3, and a guide column 33 is installed on the driving ring 31. The guide column 33 is movably inserted in the guide groove 30. When the positioning pin touches the touch switch 28, the driving electromagnet 32 ​​is energized to attract the driving ring 31, thereby pushing the centering plate 29 to move radially and clamp the positioning pin for positioning. An avoidance groove 34 is provided on the driving ring 31 and the centering plate 29, and the outer end of the centering plate 29 is movably inserted in the avoidance groove 34. A positioning spring 35 is installed on the blind plate 3, and the positioning spring 35 abuts against the driving ring 31. A positioning ring 36 is installed at the end of the press-fit hole, and a plurality of driving electromagnets 32 are installed at intervals on the circumferential direction of the positioning ring 36, and the positioning spring 35 abuts against the positioning ring 36. A suction electromagnet 37 is installed at the end of the adjustment column 27, and after the touch switch 28 is triggered, the suction electromagnet 37 is energized to suction and position the positioning pin.

[0054] During the process of loading the locating pin into the press-fit locating groove 7, the end of the locating pin touches the touch switch 28. After receiving the signal, the controller energizes the driving electromagnet 32, attracting the driving ring 31 to move, thereby pushing the centering plate 29 to move radially to clamp the locating pin in position, thereby ensuring the accuracy of the loading position of the locating pin.

[0055] A closed container helium inspection method is used for inspection by a closed container helium inspection device, comprising the following steps: S1, loading the closed container 5 onto a workbench 2, the clamping mechanism works, the telescopic rod of the clamping piston cylinder 12 retracts, thereby driving the slider 9 to move toward the closed container 5, and the clamping block 11 clamps the closed container 5; S2, loading a positioning pin into the press-fitting positioning groove 7 of the blind plate 3, and installing the observation window to the corresponding window 6 position on the closed container 5; S3, the horizontal piston cylinder 18 and the vertical piston cylinder 17 work, driving the blind plate 3 to move toward the window 6, press-fitting the positioning pin into the positioning hole on the closed container 5, and closing the window 6 on the closed container 5; S4, passing helium into the closed container 5 for airtightness inspection.

[0056] The window 6 on the sealed container 5 needs to be sealed before the helium inspection, and a positioning pin needs to be installed on the edge of the window 6 after the helium inspection is completed. In the technical solution of the present application, the positioning pin is installed while the helium inspection is being carried out. The closing of the window 6 is achieved by the blind plate 3. Specifically, before the blind plate 3 is moved, one end of the positioning pin is first inserted and positioned in the press-fit positioning groove 7 on the blind plate 3, and the observation window is installed to the corresponding window 6 position on the sealed container 5, and finally the blind plate 3 is moved toward the window 6 to close the window 6 while the positioning pin is pressed onto the sealed container. After that, helium can be introduced for the helium inspection operation.

[0057] The closing of the window 6 on the sealed container 5 is automatically completed by the blind plate 3, and the blind plate 3 closes the window 6 while realizing the installation of the positioning pin, and the blind plate 3 and the sealed container 5 do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process, and avoiding the situation where the observation window is damaged due to uneven force of screwing in the case of an observation window. The sealed container 5 helium inspection device of this patent application facilitates the helium inspection operation of the sealed container 5, is conducive to improving work efficiency, and reduces the probability of scratching the container surface.

[0058] Example 4: A closed container helium detection device (see attached Figure 6), including a frame 1, a workbench 2 and a plurality of movable blind plates 3 are installed on the frame 1, and a universal wheel 4 with a brake is installed at the bottom of the frame 1 to facilitate the transportation of the entire frame 1. The closed container 5 is loaded and positioned on the workbench 2, and a clamping mechanism is installed on the workbench 2, and the clamping mechanism clamps and positions the closed container 5. The blind plate 3 corresponds to the window 6 set on the sealed container, and a plurality of press-fit positioning grooves 7 are provided on the blind plate 3, and the press-fit positioning grooves 7 are arranged near the edge of the blind plate 3. The press-fit positioning groove 7 is open at one end and closed at the other end. The press-fit positioning groove 7 is loaded with a positioning pin, and the blind plate 3 moves toward the window 6 to close the window 6 while pressing the positioning pin onto the sealed container.

[0059] The clamping mechanism includes a lifting block 8 and a plurality of sliders 9 slidably mounted on the workbench 2, a connecting rod 10 is hinged between the slider 9 and the lifting block 8, a clamping block 11 is installed on the slider 9, the lifting block 8 is connected to the clamping piston cylinder 12, and the clamping block 11 is clamped on the sealed container 5. Limiting grooves 13 are arranged on the workbench 2 and correspond to the slider 9, the slider 9 is adaptively connected to the limiting grooves 13, and protrusions are arranged on the upper and lower sides of the slider 9, and the two protrusions are respectively attached to the upper surface and the lower surface of the workbench 2. In this embodiment, four sliders 9 are arranged, and the four sliders 9 are respectively arranged in the four directions of the front, back, left and right of the sealed container 5. The lifting block 8 is arranged below the workbench 2, and the lifting block 8 is fastened to the telescopic rod of the clamping piston cylinder 12. The connecting rod 10 is obliquely connected between the lifting block 8 and the slider 9.

[0060] The clamping block 11 is slidably mounted on the slider 9, and a locking screw is connected between the clamping block 11 and the slider 9. An adjustment slot 14 is provided on the slider 9, and the adjustment slot 14 is in an inverted T-shaped structure. A sliding portion 15 adapted to the adjustment slot 14 is provided at the lower part of the clamping block 11, and the sliding portion 15 is in an inverted T-shaped structure. The locking screw is connected to the sliding portion 15, and the end of the sliding portion 15 abuts against the bottom surface of the adjustment slot 14. Position switches 16 are installed on the workbench 2 near the left and right sides of the sealed container 5, and the position switches 16 are used to determine whether the sealed container 5 is clamped in place.

[0061] A vertical piston cylinder 17 and a transverse piston cylinder 18 are installed on the frame 1, and the telescopic rod of the vertical piston cylinder 17 and the telescopic rod of the transverse piston cylinder 18 are both connected to the blind plate 3. The telescopic rod of the vertical piston cylinder 17 is arranged vertically, and the telescopic rod of the transverse piston cylinder 18 is arranged horizontally. A top plate 19 is arranged on the top of the frame 1, and the vertical piston cylinder 17 is installed on the top plate 19. A bottom plate is arranged at the lower part of the frame 1, and the clamping piston cylinder 12 is installed on the bottom plate. A slide plate 20 is installed on the frame 1, and the slide plate 20 is in an L-shaped structure. A long strip-shaped adjustment groove 21 is arranged on the slide plate 20, and the transverse piston cylinder 18 is installed on the slide plate 20. A connecting column 22 is arranged on the transverse piston cylinder 18, and the connecting column 22 is movably plug-in connected to the adjustment groove 21. A locking sleeve 23 is connected to the connecting column 22, and the locking sleeve 23 abuts against the slide plate 20 to tighten the transverse piston cylinder 18.

[0062] An adjusting piston cylinder 24 is installed on the frame 1. The adjusting piston cylinder 24 is arranged vertically. The telescopic rod of the adjusting piston cylinder 24 is connected to the slide plate 20. A guide rail 25 is installed on the frame 1. Both ends of the slide plate 20 are slidably connected to the guide rail 25. A connecting block 26 is arranged in the middle of the slide plate 20. The connecting block 26 is tightly connected to the telescopic rod of the adjusting piston cylinder 24. A sliding groove is arranged on the guide rail 25. Both ends of the slide plate 20 are respectively inserted into the two sliding grooves. After the slide plate 20 is lifted and moved into position, a screw is connected to the guide rail 25. The end of the screw abuts against the slide plate 20 to realize the positioning of the slide plate 20. The height of the slide plate 20 is adjusted to adapt to the helium inspection operation of the sealed container 5 of different specifications.

[0063] A press-fitting hole is provided on the blind plate 3, one end of which is threadedly connected to the adjusting column 27, and the space between the open end of the press-fitting hole and the end of the adjusting column 27 forms a press-fitting positioning groove 7, and a touch switch 28 is provided at the end of the adjusting column 27. A plurality of radially movable centering plates 29 are evenly distributed on the side wall of the press-fitting hole, and an inclined guide groove 30 is provided on the centering plate 29. A driving ring 31 and a driving electromagnet 32 ​​are installed at the position of the press-fitting hole on the blind plate 3, and a guide column 33 is installed on the driving ring 31. The guide column 33 is movably inserted in the guide groove 30. When the positioning pin touches the touch switch 28, the driving electromagnet 32 ​​is energized to attract the driving ring 31, thereby pushing the centering plate 29 to move radially and clamp the positioning pin for positioning. An avoidance groove 34 is provided on the driving ring 31 and the centering plate 29, and the outer end of the centering plate 29 is movably inserted in the avoidance groove 34. A positioning spring 35 is installed on the blind plate 3, and the positioning spring 35 abuts against the driving ring 31. A positioning ring 36 is installed at the end of the press-fit hole, and a plurality of driving electromagnets 32 are installed at intervals on the circumferential direction of the positioning ring 36, and the positioning spring 35 abuts against the positioning ring 36. A suction electromagnet 37 is installed at the end of the adjustment column 27, and after the touch switch 28 is triggered, the suction electromagnet 37 is energized to suction and position the positioning pin.

[0064] During the process of loading the locating pin into the press-fit locating groove 7, the end of the locating pin touches the touch switch 28. After receiving the signal, the controller energizes the driving electromagnet 32, attracting the driving ring 31 to move, thereby pushing the centering plate 29 to move radially to clamp the locating pin in position, thereby ensuring the accuracy of the loading position of the locating pin.

[0065] A universal ball head 38 is arranged on the back of the blind plate 3, and the universal ball head 38 is connected to the fixed column 39. The telescopic rods of the horizontal piston cylinder 18 and the vertical piston cylinder 17 are respectively fastened to the two fixed columns 39. A connecting groove 40 is arranged on the fixed column 39, and the universal ball head 38 is adapted to be connected with the connecting groove 40. A movable locking column 41 is installed on the fixed column 39, and a movable locking tooth 42 is arranged at the end of the locking column 41. A plurality of universal locking teeth 43 are densely distributed on the outer surface of the universal ball head 38. After the blind plate 3 is universally rotated and adjusted to the right position, the locking column 41 moves to make the movable locking teeth 42 mesh with the universal locking teeth 43 to realize the positioning of the blind plate 3. An adjusting sleeve 44 is threadedly connected to the fixed column 39, and a push-pull rod 45 is connected to the locking column 41. An annular groove 46 is arranged on the adjusting sleeve 44, and the end of the push-pull rod 45 is inserted in the annular groove 46. The adjusting sleeve 44 rotates to realize the reciprocating movement of the locking column 41.

[0066] Before the helium inspection, the blind plate 3 is moved toward the window 6 on the sealed container 5. At this time, it cannot be guaranteed that the surface of the blind plate 3 is completely aligned with the surface of the sealed container 5. After the blind plate 3 is attached to the surface of the sealed container 5, since the universal ball head 38 is set on the blind plate 3, the blind plate 3 can be universally rotated and the posture is adaptively adjusted to ensure that the surface of the blind plate 3 is completely attached and sealed with the surface of the sealed container 5. At this time, the locking column 41 is moved so that the movable locking teeth 42 on the locking column 41 are engaged with the universal locking teeth 43 on the universal ball head 38 to realize the positioning of the blind plate 3. Through this structural setting, the blind plate 3 can be fine-tuned to ensure the sealing of the blind plate 3 after covering the window 6.

[0067] A closed container helium inspection method is used for inspection by a closed container helium inspection device, comprising the following steps: S1, loading the closed container 5 onto a workbench 2, the clamping mechanism works, the telescopic rod of the clamping piston cylinder 12 retracts, thereby driving the slider 9 to move toward the closed container 5, and the clamping block 11 clamps the closed container 5; S2, loading a positioning pin into the press-fitting positioning groove 7 of the blind plate 3, and installing the observation window to the corresponding window 6 position on the closed container 5; S3, the horizontal piston cylinder 18 and the vertical piston cylinder 17 work, driving the blind plate 3 to move toward the window 6, press-fitting the positioning pin into the positioning hole on the closed container 5, and closing the window 6 on the closed container 5; S4, passing helium into the closed container 5 for airtightness inspection.

[0068] The window 6 on the sealed container 5 needs to be sealed before the helium inspection, and a positioning pin needs to be installed on the edge of the window 6 after the helium inspection is completed. In the technical solution of the present application, the positioning pin is installed while the helium inspection is being carried out. The closing of the window 6 is achieved by the blind plate 3. Specifically, before the blind plate 3 is moved, one end of the positioning pin is first inserted and positioned in the press-fit positioning groove 7 on the blind plate 3, and the observation window is installed to the corresponding window 6 position on the sealed container 5, and finally the blind plate 3 is moved toward the window 6 to close the window 6 while the positioning pin is pressed onto the sealed container. After that, helium can be introduced for the helium inspection operation.

[0069] The closing of the window 6 on the sealed container 5 is automatically completed by the blind plate 3, and the blind plate 3 closes the window 6 while realizing the installation of the positioning pin, and the blind plate 3 and the sealed container 5 do not need to be connected and fixed by screws, which can be used for batch helium inspection, avoiding the phenomenon of scratching the product surface during the screw installation process, and avoiding the situation where the observation window is damaged due to uneven force of screwing in the case of an observation window. The sealed container 5 helium inspection device of this patent application facilitates the helium inspection operation of the sealed container 5, is conducive to improving work efficiency, and reduces the probability of scratching the container surface.

[0070] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A closed container helium detection device, characterized in that: The machine comprises a frame, a workbench and a plurality of movable blind plates are installed on the frame, a sealed container is loaded and positioned on the workbench, the blind plate corresponds to a window arranged on the sealed container, a plurality of press-fit positioning grooves are arranged on the blind plate, positioning pins are loaded in the press-fit positioning grooves, the blind plate moves toward the window to close the window and at the same time presses the positioning pins onto the sealed container.

2. A closed container helium detection device according to claim 1, characterized in that: A clamping mechanism is installed on the workbench, and the clamping mechanism clamps and positions the sealed container.

3. A closed container helium detection device according to claim 2, characterized in that: The clamping mechanism includes a lifting block and a plurality of slide blocks slidably mounted on a workbench, a connecting rod is hinged between the slide block and the lifting block, a clamping block is mounted on the slide block, the lifting block is connected to a clamping piston cylinder, and the clamping block is clamped on a closed container.

4. A closed container helium detection device according to claim 3, characterized in that: The clamping block is slidably mounted on the slider, and a locking screw is connected between the clamping block and the slider.

5. The closed container helium detection device according to claim 1, characterized in that: A vertical piston cylinder and a transverse piston cylinder are installed on the frame, and the telescopic rod of the vertical piston cylinder and the telescopic rod of the transverse piston cylinder are both connected with a blind plate.

6. A closed container helium detection device according to claim 5, characterized in that: A slide plate is installed on the frame, a long strip adjustment groove is arranged on the slide plate, a transverse piston cylinder is installed on the slide plate, a connecting column is arranged on the transverse piston cylinder, the connecting column is movably plug-in connected with the adjustment groove, a locking sleeve is connected to the connecting column, and the locking sleeve abuts against the slide plate to fasten the transverse piston cylinder.

7. A closed container helium detection device according to claim 6, characterized in that: An adjusting piston cylinder is installed on the frame, a telescopic rod of the adjusting piston cylinder is connected with the slide plate, a guide rail is installed on the frame, and two ends of the slide plate are slidably connected with the guide rail.

8. The closed container helium detection device according to claim 1, characterized in that: A press-fitting hole is arranged on the blind plate, one end of which is threadedly connected to the adjusting column, the space between the open end of the press-fitting hole and the end of the adjusting column forms a press-fitting positioning groove, a touch switch is arranged on the end of the adjusting column, a number of radially movable centering plates are evenly distributed on the side wall of the press-fitting hole, a driving ring and a driving electromagnet are installed at the position of the press-fitting hole on the blind plate, the positioning pin touches the touch switch, the driving electromagnet is energized to attract the driving ring, thereby pushing the centering plate to move radially and clamp the positioning pin to position.

9. A closed container helium detection device according to any one of claims 1 to 8, characterized in that: A universal ball head is arranged on the back of the blind plate, the universal ball head is connected to the fixed column, a connecting groove is arranged on the fixed column, the universal ball head is adapted to be connected with the connecting groove, a movable locking column is installed on the fixed column, a movable locking tooth is arranged on the end of the locking column, and a plurality of universal locking teeth are densely distributed on the outer surface of the universal ball head. After the blind plate is universally rotated and adjusted into place, the locking column moves to make the movable locking teeth engage with the universal locking teeth to realize the positioning of the blind plate.

10. A closed container helium inspection method, characterized in that: The method of using the sealed container helium detection device according to any one of claims 1 to 9 to perform detection comprises the following steps: S1, loading the sealed container onto a workbench; S2, loading a positioning pin into the press-fit positioning groove of the blind plate, and installing the observation window to the corresponding window position on the sealed container; S3, moving the blind plate toward the window, press-fitting the positioning pin onto the sealed container, and closing the window on the sealed container; S4, passing helium into the sealed container for airtightness detection.

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