Cover opening and closing mechanism for airtightness detection

Abstract

The invention relates to the technical field of ultrasonic scanning detection, in particular to a cover opening and closing mechanism for airtightness detection, which comprises a bracket, a lower template is arranged on the bracket, an upper template is arranged on the lower template, and a plurality of buckles connected with the upper template are uniformly arranged on the side edge of the lower template. The upper template is provided with a plurality of clamping grooves which correspond to the buckles one to one and are matched with the buckles one to one, the support is further provided with a hydraulic cylinder located above the upper template, an output shaft of the hydraulic cylinder is vertically downward, the end of the output shaft is connected with a pressing plate facing the upper template, and the two sides of the pressing plate are slidably connected with two clamping plates used for taking and placing the upper template. The lower ends of the clamping plates are located below the pressing plate, and the clamping plates are located on the two sides of the upper die plate. Mechanical cover opening and closing can be achieved through hydraulic mechanisms such as the pressing plate and the hydraulic cylinder, and therefore the installation quality of the upper die plate and the lower die plate is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of ultrasonic scanning detection, and particularly relates to an opening and closing cover mechanism for airtight detection. Background Art

[0002] The power module is mainly used to monitor the active power of the generator, ensuring reverse power protection during the parallel connection and grid connection of the generator sets, and preventing equipment damage or safety accidents caused by reverse power. The Scanning Acoustic Tomography (SAT; also known as C-SAM, C-mode Scanning Acoustic Microscope) is a machine that detects through the different reflection rates and energies of high-frequency ultrasonic waves and materials with different densities, and is widely used in the back-end process of power modules to detect power modules.

[0003] When the ultrasonic microscope monitors, water is required as a medium to detect HPD. If the surface of the chip of the power module comes into contact with moisture, it is easy to cause a short circuit. Therefore, HPD needs to be sealed before ultrasonic detection, and only the surface is exposed for detection.

[0004] During detection, the power module is usually hermetically clamped by two upper and lower templates, and then an airtight test is performed. To ensure the accuracy of the airtight test, the connection stability between the two upper and lower templates should be strong enough to prevent the upper and lower templates from separating during the pressurization process of the airtight test, affecting the test and safety.

[0005] The existing installation of the upper and lower templates is usually carried out manually, and the installation quality is difficult to guarantee, affecting the airtight test. Summary of the Invention

[0006] In order to improve the installation quality, this application provides an opening and closing cover mechanism for airtight detection.

[0007] An opening and closing cover mechanism for airtight detection provided by this application adopts the following technical solution: An opening and closing cover mechanism for airtight detection includes a bracket. A lower template is provided on the bracket, and an upper template is provided on the lower template. A plurality of buckles for connecting with the upper template are evenly provided on the side of the lower template. A plurality of card slots corresponding to and cooperating with the buckles are opened on the upper template. A hydraulic cylinder is further provided on the bracket above the upper template. The output shaft of the hydraulic cylinder is vertically downward, and the end is connected with a pressing plate facing the upper template. Two clamping plates for picking and placing the upper template are slidably connected to both sides of the pressing plate. The lower end of the clamping plate is located below the pressing plate, and the clamping plates are located on both sides of the upper template.

[0008] By adopting the above technical solution, the lower template is placed below the bracket. When the cover is closed, the upper template is located below the pressing plate, and the two clamping plates are clamped on both sides of the upper template. When the hydraulic cylinder is started, the pressing plate drives the upper template to press down until the upper template presses above the lower template, and the buckle is embedded in the card slot, thereby fixing the upper template and the lower template. When opening the cover, the pressing plate presses down above the upper template, the buckle is disengaged from the card slot, the clamping plates are clamped on both sides of the upper template, and the pressing plate is lifted to separate the upper template and the lower template, realizing the opening of the cover. Through the pressing plate and hydraulic mechanisms such as the hydraulic cylinder, mechanized opening and closing of the cover can be achieved, thus ensuring the installation quality of the upper template and the lower template.

[0009] Preferably, a rotating shaft rotatably connected to the lower template is fixed on the buckle, and a torsion spring is provided between the rotating shaft and the lower template. When the torsion spring is in a natural state, the buckle is in a vertical state. A rotating groove is formed on the lower template, the rotating shaft is located above the rotating groove, and the lower end of the buckle is movably connected to the rotating groove.

[0010] By adopting the above technical solution, the operator presses the lower end of the buckle, and the buckle overcomes the torsion of the torsion spring and rotates with the rotating shaft as a fulcrum, so that the upper end of the buckle opens outward, realizing the separation of the buckle and the card slot.

[0011] Preferably, an extrusion cylinder oppositely facing the lower end of the buckle is horizontally rotatably connected to the bracket. An extrusion rod sliding in the extrusion cylinder is threadedly connected in the extrusion cylinder. A vertical rack is vertically slidably connected to the bracket. The upper end of the vertical rack is higher than the upper surface of the lower template. A vertical spring is provided between the lower end of the vertical rack and the bracket. An extrusion gear meshing with the vertical rack is coaxially fixedly connected to the outer wall of the extrusion cylinder.

[0012] By adopting the above technical solution, when closing the cover, before the upper template contacts the lower template when the pressing plate presses down, the pressing plate abuts against the vertical rack and presses down the vertical rack. The vertical rack drives the extrusion cylinder to rotate through the extrusion gear, and the extrusion cylinder drives the extrusion rod to extend out of the extrusion cylinder through the thread. The extrusion rod abuts against the lower end of the buckle, so that the upper end of the buckle opens outward, facilitating the installation of the upper template.

[0013] Preferably, a trigger block is horizontally slidably connected to the pressing plate. A trigger hole vertically arranged and cooperating with the vertical rack is formed on the trigger block. A trigger rod is vertically arranged on the bracket. The upper end of the trigger rod is tapered. The trigger block and the pressing plate are connected by a transverse spring. When the transverse spring is in a natural state, the trigger block faces the vertical rack, and the trigger rod faces the end of the trigger block close to the trigger hole.

[0014] By adopting the above technical solution, when the cover is closed, the pressing plate presses down, the triggering block presses down the vertical rack, and finally drives the upper end of the buckle to open outwards. The pressing plate continues to press down until the upper template abuts against the lower template. At this time, the triggering rod abuts against the end of the triggering block and squeezes the triggering block. The triggering block moves horizontally under the extrusion of the triggering rod, causing the triggering hole to be aligned with the vertical rack. The vertical rack moves upwards under the action of the vertical spring and inserts into the triggering hole. During the upward movement of the vertical rack, the extrusion cylinder rotates in the reverse direction, the extrusion rod retracts into the extrusion cylinder, and the buckle is reset to a vertical state under the action of the torsion spring. The upper end of the buckle is embedded in the card slot, thereby realizing the fixation of the upper template and the lower template. During the process of closing the cover, when the pressing plate moves down, the opening and closing of the buckle can be automatically realized, thereby realizing the fixation of the upper template and the lower template, which is convenient to use.

[0015] Preferably, the triggering rod is vertically slidably connected to the bracket, an opening and closing air cylinder is vertically arranged on the bracket, the triggering rod is fixed to the output shaft of the opening and closing air cylinder, a vertical strip-shaped groove is formed in the vertical rack, and a connecting rod passing through the strip-shaped groove is fixed on the triggering rod.

[0016] By adopting the above technical solution, when the cover is closed, the output shaft of the opening and closing air cylinder rises. When the pressing plate presses down, the triggering rod can contact the triggering block. When the cover is opened, the output shaft of the opening and closing air cylinder descends, the triggering rod follows and descends, and drives the vertical rack to move downwards through the connecting rod, so that the upper end of the buckle opens outwards and disengages from the card slot, thereby facilitating the removal of the upper template and realizing the opening of the cover. The lifting of the output shaft of the opening and closing air cylinder can realize the switching between the two working modes of opening and closing the device, which is convenient to use.

[0017] Preferably, the clamping plate includes a vertically arranged vertical plate and a horizontally arranged horizontal plate. The vertical plate includes an upper plate and a lower plate. A buffer spring is connected between the upper plate and the lower plate. The horizontal plate is connected to the lower end of the lower plate and is located below the pressing plate.

[0018] By adopting the above technical solution, the pressing plate drives the upper template to press down. During the downward pressing process, the upper end of the buckle opens outwards until the upper template contacts the lower template. At this time, the pressing plate continues to press down, the buffer spring is squeezed, and the triggering rod abuts against the triggering block. The triggering block moves horizontally, the vertical rack penetrates into the triggering hole, and the buckle is buckled in the card slot to realize the closing of the cover. The buffer spring buffers the upper template to prevent the pressure of the pressing plate on the upper template from being too large.

[0019] Preferably, a clamping lead screw is rotatably connected to the upper surface of the pressing plate. Two sections of threads with opposite helix directions are arranged on the clamping lead screw. The two sections of threads are located at both ends of the clamping lead screw and are respectively connected with a nut seat. The upper ends of the two upper plates are respectively connected with the two nut seats.

[0020] By adopting the above technical solution, when the clamping lead screw rotates, the two nut seats drive the two clamping plates to move synchronously towards or away from each other, thereby realizing the grasping and releasing of the upper template.

[0021] Preferably, a concave clamping groove is formed on the side of the upper template, and a clamping block matched with the clamping groove is fixed on the clamping plate.

[0022] By adopting the above technical solution, when the clamping plate clamps the upper template, the clamping block is inserted into the clamping groove, thereby enhancing the clamping effect of the clamping plate on the clamping block and improving the stability.

[0023] In summary, the present application includes the following beneficial technical effects: 1. Through hydraulic mechanisms such as the pressure plate and the hydraulic cylinder, mechanized opening and closing of the cover can be achieved, thereby ensuring the installation quality of the upper template and the lower template. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the bracket in the embodiment; Figure 2 is a schematic structural diagram after the upper template and the lower template are closed in the embodiment; Figure 3 is a schematic connection diagram of the buckle and the lower template in the embodiment; Figure 4 is a schematic connection diagram of the vertical rack and the base in the embodiment; Figure 5 is a schematic connection diagram of the trigger block and the pressure plate.

[0025] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Bracket; 11. Base; 12. Top plate; 21. Upper template; 211. Card slot; 212. Clamping groove; 22. Lower template; 221. Rotating groove; 23. Buckle; 231. Rotating shaft; 232. Torsion spring; 3. Hydraulic cylinder; 4. Pressure plate; 41. Clamping lead screw; 42. Nut seat; 5. Clamping plate; 51. Vertical plate; 511. Upper plate; 512. Lower plate; 513. Buffer spring; 52. Horizontal plate; 521. Clamping block; 61. Extrusion cylinder; 62. Extrusion rod; 63. Vertical rack; 631. Strip-shaped groove; 64. Vertical spring; 65. Extrusion gear; 66. Trigger rod; 661. Connecting rod; 67. Opening and closing cylinder; 7. Trigger block; 71. Trigger hole; 72. Horizontal spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further describes the present application in detail with reference to all the drawings. Embodiment

[0027] The embodiment of the present application discloses an opening and closing cover mechanism for airtight detection, referring to Figure 1 and Figure 2, including a bracket 1, an upper template 21 and a lower template 22. The power module is installed between the upper template 21 and the lower template 22, and the upper template 21 and the lower template 22 are assembled or disassembled on the bracket 1.

[0028] Refer to Figure 2 and Figure 3 , the upper template 21 and the lower template 22 are connected by a buckle 23. The horizontal projections of the upper template 21 and the lower template 22 are square, and at least one buckle 23 is provided on each of the four sides of the lower template 22. A rotating shaft 231 is fixed at the middle position of the buckle 23. The rotating shaft 231 is rotatably connected to the lower template 22, and a torsion spring 232 is provided between the rotating shaft 231 and the lower template 22. When the torsion spring 232 is in the natural state, the buckle 23 is in the vertical state.

[0029] Refer to Figure 2 and Figure 3 , a rotating groove 221 is formed on the lower template 22 opposite to the lower end of the buckle 23. The lower end of the buckle 23 can move in the rotating groove 221. When the lower end of the buckle 23 rotates towards the inside of the rotating groove 221 around the rotating shaft 231, the upper end of the buckle 23 moves outwards and is in an open state. A plurality of card slots 211 corresponding to the buckles 23 one by one are formed on the upper surface of the upper template 21. When the upper end of the buckle 23 is embedded in the card slot 211, the upper template 21 and the lower template 22 are locked and fixed.

[0030] Refer to Figure 1 and Figure 2 , the bracket 1 includes a base 11 and a top plate 12 located directly above the base. The lower template 22 is placed on the base 11. A vertically arranged hydraulic cylinder 3 is installed on the top plate 12. A pressing plate 4 is fixed at the lower end of the hydraulic cylinder 3 passing through the top plate 12. The upper template 21 is installed on the lower surface of the pressing plate 4. The output shaft of the hydraulic cylinder 3 expands and contracts to drive the upper template 21 to move up and down, realizing closing and opening of the cover.

[0031] Refer to Figure 1 and Figure 2 , a clamping lead screw 41 is rotatably connected to the upper surface of the pressing plate 4. Two sections of threads with opposite helix directions are provided on the clamping lead screw 41. The two sections of threads are located at both ends of the clamping lead screw 41 and are respectively connected to a nut seat 42. Each of the two nut seats 42 is connected to a clamping plate 5. The clamping plate 5 includes a vertical plate 51 and a horizontal plate 52. The upper end of the vertical plate 51 is fixedly connected to the nut seat 42, and the lower end of the vertical plate 51 is located below the pressing plate 4 and is fixedly connected to the horizontal plate 52. The clamping lead screw 41 rotates, thereby synchronously driving the two clamping plates 5 to move towards or away from each other, and the two horizontal plates 52 clamp or release the upper template 21.

[0032] Refer to Figure 1 and Figure 2, a concave clamping groove 212 is formed on the side of the upper template 21, and a clamping block 521 matching the clamping groove 212 is fixed at the end of the cross plate 52. When the cross plate 52 clamps the upper template 21, the clamping block 521 is inserted into the clamping groove 212 to improve the clamping stability.

[0033] Refer to Figure 1 and Figure 2 , the vertical plate 51 includes an upper plate 511 and a lower plate 512, and a buffer spring 513 is connected between the upper plate 511 and the lower plate 512. When the pressing plate 4 drives the upper template 21 to press down, the buffer spring 513 buffers the upper template 21 to prevent damage to the upper template 21 or the lower template 22 caused by excessive pressure.

[0034] Refer to Figure 2 and Figure 4 , a pressing cylinder 61 is horizontally rotatably connected to the base 11 and is opposite to the lower end of the buckle 23. A pressing rod 62 that slides in the pressing cylinder 61 is connected to the pressing cylinder 61 by a thread. When the pressing cylinder 61 rotates, the pressing rod 62 makes a telescopic movement along the axis of the pressing cylinder 61. The pressing rod 62 extends out of the pressing cylinder 61 to press the lower end of the buckle 23, pressing the lower end of the buckle 23 towards the inside of the rotating groove 221. The buckle 23 rotates with the rotating shaft 231 as the fulcrum, thereby driving the upper end of the buckle 23 to move outwards and be in an open state, thus facilitating the installation of the upper template 21.

[0035] Refer to Figure 2 and Figure 4 , a vertical rack 63 is vertically slidably connected to the base 11. The upper end of the vertical rack 63 is higher than the upper surface of the lower template 22. An extrusion gear 65 meshing with the vertical rack 63 is coaxially fixed to the outer wall of the pressing cylinder 61. When the vertical rack 63 moves downwards, the extrusion gear 65 rotates and drives the pressing cylinder 61 to rotate at the same time, and drives the pressing rod 62 to extend out of the pressing cylinder 61 to press the lower end of the buckle 23, and finally drives the upper end of the buckle 23 to open outwards.

[0036] Refer to Figure 2 and Figure 4 , a vertical spring 64 is provided between the lower end of the vertical rack 63 and the base 11. When the vertical spring 64 is in the natural state, the vertical rack 63 is at the highest point, and at this time, the pressing rod 62 retracts into the pressing cylinder 61.

[0037] Refer to Figures 1 to 5 , a trigger block 7 is horizontally slidably connected to the pressing plate 4. The trigger block 7 is connected to the pressing plate 4 by a transverse spring 72. When the transverse spring 72 is in the natural state, the trigger block 7 is opposite to the vertical rack 63. When the pressing plate 4 presses down, the trigger block 7 contacts the vertical rack 63 and presses down the vertical rack 63, and the upper end of the buckle 23 gradually opens. The pressing plate 4 continues to press down until the upper template 21 presses on the lower template 22.

[0038] Refer to Figures 1 to 5 , a vertical triggering hole 71 is formed in the triggering block 7, and the triggering hole 71 is adapted to the vertical rack 63. A vertical triggering rod 66 is provided on the base 11. The upper end of the triggering rod 66 is tapered. When the vertical spring 64 is in a natural state, the upper end of the vertical rack 63 is higher than the upper end of the triggering rod 66. When the lateral spring 72 is in a natural state, the triggering rod 66 is opposite to the end of the triggering block 7 close to the triggering hole 71.

[0039] Refer to Figures 1 to 5 , when the pressing plate 4 is pressed down until the upper template 21 presses on the lower template 22, the upper end of the buckle 23 is still in an open state at this time. The pressing plate 4 continues to be pressed down, the buffer spring 513 is compressed, and the upper template 21 no longer moves downward, but the pressing plate 4 continues to move downward. Until the triggering rod 66 abuts against the triggering block 7, the triggering block 7 continues to move downward, the triggering rod 66 squeezes the triggering block 7, the lateral spring 72 is stretched, the triggering block 7 moves laterally, and the triggering hole 71 moves toward the direction of the vertical rack 63 until the triggering hole 71 is opposite to the vertical rack 63. At this time, the vertical rack 63 rises and resets under the action of the vertical spring 64, the pressing rod 62 retracts into the pressing cylinder 61, and the buckle 23 is reset to a vertical state under the action of the torsion spring 232. The upper end of the buckle 23 is embedded in the card slot 211 of the upper template 21, thereby fixing the upper template 21 and the lower template 22 to complete the closing of the cover.

[0040] Refer to Figures 1 to 5 , an opening and closing air cylinder 67 is vertically installed on the base 11. The triggering rod 66 is fixed on the output shaft of the opening and closing air cylinder 67. A vertical strip-shaped groove 631 is formed in the vertical rack 63, and a connecting rod 661 passing through the strip-shaped groove 631 is fixed on the triggering rod 66. When the output shaft of the opening and closing air cylinder 67 is in an extended state and the vertical spring 64 is in a natural state, the connecting rod 661 abuts against the lower end of the strip-shaped groove 631.

[0041] Refer to Figures 1 to 5 , when the output shaft of the opening and closing air cylinder 67 is in an extended state, the triggering rod 66 is in a cover closing state and can contact the triggering block 7, so as to finally drive the buckle 23 to be buckled after the upper template 21 and the lower template 22 are installed. When the output shaft of the opening and closing air cylinder 67 is in a contracted state, the triggering rod 66 moves downward, and drives the vertical rack 63 to move downward synchronously through the connecting rod 661. The vertical rack 63 is always below, and finally the upper end of the buckle 23 is in an open state, so as to facilitate the separation of the upper template 21 and the lower template 22 to realize the opening of the cover.

[0042] The implementation principle of the opening and closing cover mechanism for airtight detection in the embodiments of this application is as follows: When closing the cover, the output shaft of the opening and closing cylinder 67 is in the extended state. The lower template 22 is placed on the base 11, the upper template 21 is installed below the pressing plate 4, and the clamping plate 5 clamps the upper template 21. The hydraulic cylinder 3 is activated, the pressing plate 4 drives the upper template 21 to press downwards, the vertical rack 63 contacts the trigger block 7, and the upper end of the buckle 23 opens outwards. The pressing plate 4 continues to press down until the upper template 21 presses on the lower template 22. The pressing plate 4 continues to press down, the buffer spring 513 is compressed, the trigger block 7 contacts the trigger rod 66, the trigger block 7 is pushed, and the vertical rack 63 is inserted into the trigger hole 71 under the action of the vertical spring 64, and the buckle 23 is buckled inwards to complete the cover closing. The clamping plate 5 releases the upper template 21, the hydraulic cylinder 3 contracts, and the pressing plate 4 moves upwards to reset.

[0043] When opening the cover, the upper template 21 and the lower template 22 that are buckled together are placed on the base 11, the output shaft of the opening and closing cylinder 67 moves downwards to be in the contracted state, the vertical rack 63 moves downwards synchronously, the upper end of the buckle 23 opens outwards, the pressing plate 4 moves downwards until the cross plate 52 is opposite to the upper template 21, the cross plate 52 clamps the upper template 21, the pressing plate 4 is lifted, and the upper template 21 and the lower template 22 are separated to complete the opening of the cover.

[0044] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An opening and closing cover mechanism for airtight detection, characterized in that: It includes a bracket (1), on which a lower template (22) is provided. An upper template (21) is provided on the lower template (22). A number of buckles (23) for connecting with the upper template (21) are evenly arranged on the side of the lower template (22). A number of clamping grooves (211) corresponding to and cooperating with the buckles (23) one by one are formed on the upper template (21). A hydraulic cylinder (3) is further provided on the bracket (1) above the upper template (21). The output shaft of the hydraulic cylinder (3) is vertically downward and the end is connected with a pressing plate (4) facing the upper template (21). Two clamping plates (5) for picking and placing the upper template (21) are slidably connected to both sides of the pressing plate (4). The lower ends of the clamping plates (5) are located below the pressing plate (4). The clamping plates (5) are located on both sides of the upper template (21). A squeezing cylinder (61) horizontally rotatably connected to the bracket (1) and facing the lower end of the buckle (23) is provided. A squeezing rod (62) slidable in the squeezing cylinder (61) is threadedly connected in the squeezing cylinder (61). A vertical rack (63) is vertically slidably connected to the bracket (1). The upper end of the vertical rack (63) is higher than the upper surface of the lower template (22). A vertical spring (64) is provided between the lower end of the vertical rack (63) and the bracket (1). An extrusion gear (65) meshing with the vertical rack (63) is coaxially and fixedly connected to the outer wall of the squeezing cylinder (61). A trigger block (7) is horizontally slidably connected to the pressing plate (4). A trigger hole (71) vertically arranged and cooperating with the vertical rack (63) is formed in the trigger block (7). A trigger rod (66) is vertically provided on the bracket (1). The upper end of the trigger rod (66) is tapered. The trigger block (7) is connected to the pressing plate (4) by a transverse spring (72). When the transverse spring (72) is in a natural state, the trigger block (7) faces the vertical rack (63), and the trigger rod (66) faces the end of the trigger block (7) close to the trigger hole (71).

2. The opening and closing cover mechanism for airtight detection according to claim 1, wherein: A rotating shaft (231) rotatably connected to the lower template (22) is fixed on the buckle (23). A torsion spring (232) is provided between the rotating shaft (231) and the lower template (22). When the torsion spring (232) is in a natural state, the buckle (23) is in a vertical state. A rotating groove (221) is formed in the lower template (22). The rotating shaft (231) is located above the rotating groove (221). The lower end of the buckle (23) is movably connected in the rotating groove (221).

3. The opening and closing cover mechanism for airtight detection according to claim 1, characterized in that: The trigger rod (66) is vertically slidably connected to the bracket (1). An opening and closing air cylinder (67) is vertically provided on the bracket (1). The trigger rod (66) is fixed on the output shaft of the opening and closing air cylinder (67). A vertical strip-shaped groove (631) is formed in the vertical rack (63). A connecting rod (661) penetrating through the strip-shaped groove (631) is fixed on the trigger rod (66).

4. The opening and closing cover mechanism for airtight detection according to claim 3, characterized in that: The clamping plate (5) includes a vertical plate (51) arranged vertically and a horizontal plate (52) arranged horizontally. The vertical plate (51) includes an upper plate (511) and a lower plate (512). A buffer spring (513) is connected between the upper plate (511) and the lower plate (512). The horizontal plate (52) is connected to the lower end of the lower plate (512) and is located below the pressing plate (4).

5. The opening and closing cover mechanism for airtight detection according to claim 4, characterized in that: A clamping lead screw (41) is rotatably connected to the upper surface of the pressing plate (4). Two threads with opposite helix directions are provided on the clamping lead screw (41). The two threads are located at both ends of the clamping lead screw (41) and are respectively connected with nut seats (42). The upper ends of the two upper plates (511) are respectively connected with the two nut seats (42).

6. The opening and closing cover mechanism for airtight detection according to claim 1, wherein: A concave clamping groove (212) is formed on the side of the upper template (21). A clamping block (521) matched with the clamping groove (212) is fixed on the clamping plate (5).

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