Floating compensation type airtight plugging mechanism

Abstract

The utility model discloses a kind of floating compensation type airtight sealing mechanism, including cover plate, fixed plate, plugging head and the bolt of connecting cover plate and fixed plate, plugging head includes limiting plate and the body being set in the lower end of limiting plate, cover plate is provided with several No. 1 recess and the No. 1 through hole of the lower end surface of No. 1 recess and cover plate, No. 1 recess includes bottom wall and side wall, limiting plate upper end surface and lower end surface are respectively with the abutment of fixed plate lower end surface and bottom wall, body lower end passes through No. 1 through hole and protrudes cover plate lower end surface, when limiting plate and No. 1 recess concentric, body and No. 1 through hole concentric, there are floating gap between limiting plate and side wall and between body and through hole. Advantage: through floating gap floating setting on fixed plate and cover plate, position will be moved in floating gap due to external force during testing, the positioning error of compensating testing mechanism and the size error of measured product, the requirement of measured product and testing mechanism is low, can satisfy more product airtightness test requirement.

Description

Technical Field

[0001] This utility model relates to the field of automated testing equipment, specifically a floating compensation gas seal plugging mechanism. Background Technology

[0002] In leak-proof testing equipment, the position of the plug used to seal leaks is fixed, requiring high precision in the machining of both the plugging components and the tested item. Existing designs use a plastic plug inserted into the through-hole at the corresponding position, achieving a seal through plug deformation and tight contact with the inner wall of the through-hole. However, this design is prone to misalignment when there are errors in the positioning of the testing mechanism and the tested product, or in the dimensions of the tested product, leading to incomplete sealing.

[0003] For example, Chinese patent CN115388168A discloses an airtight plugging device, including a fixed base, a guide shaft, a pneumatic piston, a mounting base, a rubber ring, and a throttle valve. Gas enters the drive channel through the throttle valve, and the air pressure pushes the pneumatic piston to move, thereby squeezing the rubber ring and increasing its diameter to achieve plugging. When the aforementioned airtight plugging device plugs a product, it uses the expansion of the rubber ring to achieve plugging. Although this avoids the problem of poor sealing caused by direct insertion into the plugging opening, it cannot solve the problems of positioning error of the testing mechanism and dimensional error of the tested product.

[0004] Therefore, it is necessary to provide a floating compensation gas seal plugging mechanism. Utility Model Content

[0005] This utility model provides a floating compensation airtight sealing mechanism, which effectively solves the problem of poor sealing performance between the airtight mechanism and the product.

[0006] The technical solution adopted in this utility model is:

[0007] A floating compensation gas-tight plugging mechanism includes a cover plate, a fixed plate, several plugging heads, and several bolts connecting the cover plate and the fixed plate. Each plugging head includes a limiting plate and a body disposed at the lower end of the limiting plate. The cover plate is provided with several first grooves and a first through hole that connects the first grooves to the lower end face of the cover plate. Each first groove includes a bottom wall and a side wall. The upper and lower end faces of the limiting plate abut against the lower end face and bottom wall of the fixed plate, respectively. The lower end of the body protrudes from the lower end face of the cover plate through the first through hole. When the limiting plate and the first groove are concentric, and the body and the first through hole are concentric, there are floating gaps between the limiting plate and the side wall, and between the body and the through hole.

[0008] Furthermore, the sealing head is an elastomer plug, which is one of silicone, rubber, urethane, or polyurethane.

[0009] Furthermore, the cover plate includes a first plate and a second plate, with several first grooves respectively provided on the first plate and the second plate. Both the first plate and the second plate are provided with several countersunk holes, and the fixing plate is provided with several screw holes corresponding one-to-one with the countersunk holes. The bolts pass through the countersunk holes and are threadedly connected to the screw holes.

[0010] Furthermore, the cover plate is also provided with an elastic sealing element, a second groove and a second through hole communicating with the second groove. The elastic sealing element includes a sleeve, a pressure head slidably connected to the sleeve, and a spring disposed within the sleeve. The sleeve includes a cylinder, an annular disc concentrically disposed at the upper end of the cylinder and extending outward from the cylinder, and a concentric ...

[0011] Furthermore, the main body includes a second disk and a protrusion disposed on the lower end face of the second disk. The lower end of the second disk protrudes from the lower end face of the cover plate, and the sides of the protrusion do not protrude from the sides of the second disk. The protrusion is used to extend into the hole of the product to be tested, and the second disk is used to press the port of the product to be tested.

[0012] Furthermore, the floating gap ranges from 3mm to 5mm.

[0013] Furthermore, the cover plate is aligned with the side of the fixing plate.

[0014] Beneficial effects of the utility model:

[0015] 1. The sealing head of this application is floatingly mounted on the fixed plate and the cover plate through a floating gap. During the test, it will move in position within the floating gap due to external force, which can compensate for the positioning error of the test mechanism and the size error of the tested product. It has low requirements for the tested product and the test mechanism and can meet the airtightness test requirements of more products.

[0016] 2. The cover plate, fixing plate, sealing head and elastic sealing component of this application are quick to assemble. Simply place the sealing head and elastic sealing component on the cover plate along the first groove and the second groove respectively, and then use bolts to lock the fixing plate to the cover plate. This is easy to operate and effectively reduces the workload of the installers. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the floating compensation gas seal mechanism provided in the embodiments of this application.

[0018] Figure 2 A cross-sectional view of the cover plate, fixing plate, and sealing head of the floating compensation gas-tight plugging mechanism provided in the embodiments of this application.

[0019] Figure 3 A cross-sectional view of the cover plate, fixing plate, and elastic sealing element of the floating compensation gas-tight plugging mechanism provided in the embodiments of this application.

[0020] The markings in the diagram are as follows: 1. Cover plate; 2. Fixing plate; 3. Sealing head; 31. Limiting plate; 32. Body; 101. Groove No. 1; 102. Through hole No. 1; 11. Plate No. 1; 12. Plate No. 2; 103. Countersunk hole; 4. Elastic sealing component; 41. Sleeve; 42. Pressure head; 43. Spring; 411. Cylinder; 412. Annular disc; 413. Conical cylinder; 421. Chuck; 422. Sealing column; 321. Disc No. 2; 322. Protrusion. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the floating compensation gas-tight plugging mechanism provided in the embodiments of this application includes a cover plate 1, a fixed plate 2, a plurality of plugging heads 3, and a plurality of bolts connecting the cover plate 1 and the fixed plate 2. Figure 2 As shown, the sealing head 3 includes a limiting plate 31 and a body 32 disposed at the lower end of the limiting plate 31. The cover plate 1 is provided with a plurality of first grooves 101 and a first through hole 102 connecting the first grooves 101 and the lower end face of the cover plate 1. The first groove 101 includes a bottom wall and a side wall. The upper end face and the lower end face of the limiting plate 31 abut against the lower end face and the bottom wall of the fixing plate 2, respectively. The lower end of the body 32 protrudes from the lower end face of the cover plate 1 through the first through hole 102. When the limiting plate 31 and the first groove 101 are concentric and the body 32 and the first through hole 102 are concentric, there are floating gaps between the limiting plate 31 and the side wall and between the body 32 and the inner wall of the through hole.

[0023] In actual use, the fixing plate 2 of this application is fixed on the external lifting mechanism (which can be fixed with bolts), the product to be tested is placed in the fixture below the external lifting mechanism and fixed, and then the fixing plate 2 is driven by the external lifting mechanism to drive the cover plate 1 and the sealing head 3 to descend, so that the body 32 of the sealing head 3 extends into the through hole of the product shell to seal the through hole.

[0024] In the above design, the sealing head 3 of this application is floatingly mounted on the fixed plate 2 and the cover plate 1 through a floating gap. During the test, it will move in position within the floating gap due to external force, which can compensate for the positioning error of the test mechanism and the size error of the tested product. It has low requirements for the tested product and the test mechanism and can meet the airtightness test requirements of more products.

[0025] Specifically: the sealing head 3 is an elastomer plug, which is one of silicone, rubber, urethane, or polyurethane.

[0026] In actual use, the sealing head 3 will deform when it seals the product's sealing opening, thereby filling the product's holes and achieving a sealing effect.

[0027] In the above design, the sealing head 3 is an elastomeric sealing head 3, which can achieve the sealing of the product through hole by deformation when squeezed with the product, so as to ensure the seal with the product through hole.

[0028] Specifically: such as Figure 1 As shown, the cover plate 1 includes a first plate 11 and a second plate 12. Several first grooves 101 are respectively provided on the first plate 11 and the second plate 12. Both the first plate 11 and the second plate 12 are provided with several countersunk holes 103. The fixing plate 2 is provided with several screw holes that correspond one-to-one with the countersunk holes 103. The bolts pass through the countersunk holes 103 and are threadedly connected to the screw holes.

[0029] In actual use, select the corresponding cover plate 1 according to the shape of the product. The cover plate 1 is divided into plate 11 and plate 12. Plate 11 and plate 12 can be replaced as needed by turning the bolts.

[0030] In the above design, the structural design and specific implementation of the cover plate 1 enable the replacement of the cover plate 1.

[0031] Specifically: such as Figure 1 and Figure 3As shown, the cover plate 1 is also provided with an elastic sealing element 4. The cover plate 1 is also provided with a second groove and a second through hole communicating with the second groove. The elastic sealing element 4 includes a sleeve 41, a pressure head 42 slidably connected to the sleeve 41, and a spring 43 disposed in the sleeve 41. The sleeve 41 includes a cylinder 411, an annular disk 412 concentrically disposed at the upper end of the cylinder 411 and extending outward from the outer periphery of the cylinder 411, and a conical cylinder 413 concentrically disposed at the lower end of the cylinder 411. The lower end of the conical cylinder 413 is provided with a first hole that slides with the pressure head 42. The pressure head 42 includes a chuck 421 and a sealing post 422 coaxially disposed at the lower end of the chuck 421. The diameter of the chuck 421 is larger than the diameter of the first hole. The two ends of the spring 43 abut against the chuck 421 and the fixing plate 2, respectively. The annular disk 412 is disposed in the second groove. After the cylinder 411 passes through the second through hole, its lower end protrudes from the lower end face of the cover plate 1. The lower end of the sealing post 422 protrudes from the first hole.

[0032] In actual use, the product also has a vent hole with a flat opening. At this time, the vent hole is sealed by the elastic sealing element 4. The elastic sealing element 4 moves down with the cover plate 1 and the fixing plate 2. When the lower end of the sealing column 422 abuts against the plane around the upper end of the vent hole, under the continuous downward pressure of the external lifting mechanism, the sealing column 422 drives the chuck 421 to move up, so that the chuck 421 drives the spring 43 to compress until the external lifting mechanism stops driving the fixing plate 2 downward and the spring 43 no longer deforms.

[0033] In the above design, the structural design and specific implementation of the elastic sealing component 4 can block the vent hole with a flat surface around the upper end of the opening, and the spring 43 can reduce the impact of the lower end of the sealing column 422 on the product through buffering, preventing excessive impact on the product surface and causing damage to the product surface.

[0034] Specifically: such as Figure 2 As shown, the main body 32 includes a second disk 321 and a protrusion 322 disposed on the lower end face of the second disk 321. The lower end of the second disk 321 protrudes from the lower end face of the cover plate 1. The sides of the protrusion 322 do not protrude from the sides of the second disk 321. The protrusion 322 is used to extend into the hole of the product to be tested. The second disk 321 is used to press the port of the product to be tested.

[0035] In actual use, after the product is fixed, the external lifting mechanism drives the fixing plate 2 to move the cover plate 1 and the sealing head 3 downward, so that the protrusion 322 extends into the through hole of the product. At this time, the second disc 321 presses the upper edge of the through hole to achieve the sealing of the through hole.

[0036] In the above design, the structural design and specific implementation of the body 32 can achieve effective sealing of the product's through holes.

[0037] Specifically, the floating gap ranges from 3mm to 5mm, satisfying the positioning and dimensional errors of the product and the testing mechanism.

[0038] Specifically: such as Figure 1 As shown, the cover plate 1 is aligned with the side of the fixing plate 2.

[0039] In the above design, the side of the cover plate 1 is aligned with the side of the fixing plate 2 to facilitate quick positioning when the cover plate 1 and the fixing plate 2 are assembled.

[0040] In further detail, it should be understood that the above description is only a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating compensation type gas-tight plugging mechanism, comprising a cover plate (1), a fixed plate (2), a plurality of plugging heads (3), and a plurality of bolts connecting the cover plate (1) and the fixed plate (2), characterized in that: The sealing head (3) includes a limiting plate (31) and a body (32) disposed at the lower end of the limiting plate (31). The cover plate (1) is provided with a plurality of first grooves (101) and a first through hole (102) connecting the first grooves (101) and the lower end face of the cover plate (1). The first groove (101) includes a bottom wall and a side wall. The upper end face and the lower end face of the limiting plate (31) abut against the lower end face and the bottom wall of the fixing plate (2) respectively. The lower end of the body (32) protrudes through the through hole and out of the lower end face of the cover plate (1). When the limiting plate (31) and the first groove (101) are concentric, and the body (32) and the first through hole (102) are concentric, there are floating gaps between the limiting plate (31) and the side wall and between the body (32) and the inner wall of the first through hole (102).

2. The floating compensation gas-tight plugging mechanism according to claim 1, characterized in that: The sealing head (3) is an elastomer plug, which is one of silicone, rubber, urethane, or polyurethane.

3. The floating compensation gas-tight plugging mechanism according to claim 1, characterized in that: The cover plate (1) includes a first plate (11) and a second plate (12). Several first grooves (101) are respectively provided on the first plate (11) and the second plate (12). Both the first plate (11) and the second plate (12) are provided with several countersunk holes (103). The fixing plate (2) is provided with several screw holes corresponding to the countersunk holes (103). The bolt passes through the countersunk holes (103) and is threadedly connected to the screw holes.

4. The floating compensation gas-tight plugging mechanism according to claim 1, characterized in that: The cover plate (1) is also provided with an elastic sealing element (4). The cover plate (1) is also provided with a second groove and a second through hole communicating with the second groove. The elastic sealing element (4) includes a sleeve (41), a pressure head (42) slidably connected to the sleeve (41), and a spring (43) provided in the sleeve (41). The sleeve (41) includes a cylinder (411), an annular disk (412) concentrically arranged at the upper end of the cylinder (411) and extending to the outer periphery of the cylinder (411), and a conical cylinder (413) concentrically arranged at the lower end of the cylinder (411). The lower end of the conical cylinder (413) is provided with a first hole that slides with the pressure head (42). The pressure head (42) includes a chuck (421) and a sealing column (422) coaxially disposed at the lower end of the chuck (421). The diameter of the chuck (421) is larger than the diameter of the first hole. The two ends of the spring (43) abut against the chuck (421) and the fixing plate (2) respectively. The annular disk (412) is disposed in the second groove. After the cylinder (411) passes through the second through hole, its lower end protrudes from the lower end face of the cover plate (1). The lower end of the sealing column (422) protrudes from the first hole.

5. The floating compensation gas-tight plugging mechanism according to claim 1, characterized in that: The main body (32) includes a second disk (321) and a protrusion (322) disposed on the lower end face of the second disk (321). The lower end of the second disk (321) protrudes from the lower end face of the cover plate (1). The sides of the protrusion (322) do not protrude from the sides of the second disk (321). The protrusion (322) is used to extend into the hole of the product to be tested. The second disk (321) is used to press the port of the product to be tested.

6. The floating compensation gas-tight plugging mechanism according to claim 1, characterized in that: The floating gap ranges from 3mm to 5mm.

7. The floating compensation gas-tight plugging mechanism according to claim 1, characterized in that: The cover plate (1) is aligned with the side of the fixing plate (2).

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