Two-side 90-degree plugging airtightness test fixture

Abstract

The utility model discloses a two-side 90-degree plugging airtight test fixture, which comprises a lower aluminum piece, an upper aluminum piece, a pressing tool and an airtight instrument, the top of the lower aluminum piece is provided with a profiling cavity, the bottom of the upper aluminum piece is integrated with a top block and a positioning column, and the opposite surfaces of the top block and the lower aluminum piece are respectively and fixedly connected with upper silica gel and lower die silica gel. According to the device, the side pushing air cylinder pushes the side aluminum piece through the pushing block, the side aluminum piece completes lateral limiting of a product, the multiple sets of silica gel guarantee the sealing performance among the lower aluminum piece, the ejector block, the side aluminum piece and the product piece, a closed cavity is formed between the product and the profiling cavity, and the airtight instrument impacts set pressure into the cavity through the precise pressure reducing valve; the pressure sensor in the airtight instrument detects the pressure change of the cavity, calculates the leakage value, and judges whether the product is qualified or not, thereby completing the independent detection of the airtightness of the product, and improving the convenience of the airtightness detection of the engine cylinder cover.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to an airtight test fixture with two sides sealed at 90 degrees. Background Art

[0002] An airtight test fixture is a device used to test the airtightness of a product. It checks for leaks by applying a certain pressure or vacuum.

[0003] Chinese patent publication number CN218381435U, publication date 20230124, discloses an engine cylinder head air tightness detection device, which includes a base, a support platform, a lower sealing plate, an injector hole sealing mechanism, a circumferential sealing mechanism and a support platform displacement mechanism, wherein the support platform includes a support seat and a workbench fixedly arranged on the top of the support seat, and the support seat is slidably arranged on the upper surface of the base; the lower sealing plate is fixedly arranged on the upper surface of the workbench; the injector hole sealing mechanism is fixedly arranged above the workbench; the circumferential sealing mechanism is fixedly arranged on the four sides of the upper surface of the workbench, for sealing the oil channel holes and / or water channel holes around the engine cylinder block; the support platform displacement mechanism is fixedly arranged on the base.

[0004] The existing engine cylinder head air tightness test method mentioned above is to assemble the cylinder head into the product assembly, inflate the assembly with bubble water, and observe whether there is bubbling or leakage. In the specific implementation process, the assembled engine assembly is large in size. If the test fails, the cylinder head needs to be removed. The overall operation is relatively inconvenient. Therefore, it is urgent to propose a corresponding engine cylinder head air tightness test to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to propose an airtight test fixture with 90-degree sealing on both sides.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A double-sided 90-degree sealing airtightness test fixture comprises a lower aluminum part, an upper aluminum part, a pressing tool and an airtightness tester. The top of the lower aluminum part is provided with a contoured cavity, the bottom of the upper aluminum part is integrated with a top block and a positioning column, the top block and the opposite surfaces of the lower aluminum part are fixedly connected with upper silicone and lower mold silicone respectively, the top of the lower aluminum part is fixedly connected with a fixing seat, the outer side of the fixing seat is integrated with a side aluminum part and a push assembly for pushing the side aluminum part horizontally, and the outer wall of the side aluminum part is fixedly connected with the side silicone.

[0008] Preferably, the horizontal thrust assembly includes a side thrust cylinder fixedly connected to a fixing seat, an output end of the side thrust cylinder is fixedly connected to a push block, and an outer wall of the push block is fixedly matched with a side aluminum part.

[0009] Preferably, the outer wall of the push block is fixedly connected to the side aluminum piece through a spring, and the bottom of the upper aluminum piece is fixedly connected to multiple groups of elastic rods, and the multiple groups of elastic rods are fixedly matched with the top block and the positioning column respectively.

[0010] Preferably, the push block and the opposite surfaces of the lower aluminum member are fixedly connected with a slider and a slide rail respectively, and the slider and the slide rail are slidably connected.

[0011] Preferably, a guide column is fixedly connected to the top of the lower aluminum part, and the inner surface wall of the upper aluminum part is slidably connected to the outer surface wall of the guide column.

[0012] Preferably, a sealing cylinder is fixedly connected to the bottom of the upper aluminum component, and a sealing block is fixedly connected to the output end of the sealing cylinder.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In the present application, the upper aluminum part and the lower aluminum part are respectively fixed to the booster cylinder output end and the bottom plate of the pressing tool, the airtightness tester is connected to the profiling cavity, the product is placed on the top of the lower aluminum part, the booster cylinder pushes the upper aluminum part, and the multiple sets of elastic rods at the bottom of the upper aluminum part synchronously link the positioning column and the top block, and the positioning column and the top block are respectively combined with the corresponding positions of the product to realize the vertical limit of the product, and then the side push cylinder pushes the side aluminum part through the push block, and the side aluminum part completes the lateral limit of the product. Multiple sets of silicone ensure the sealing between the lower aluminum part, the top block and the side aluminum part and the product, so that a closed chamber is formed between the product and the profiling cavity. The airtightness tester rushes the set pressure into the chamber through the precision pressure reducing valve. The pressure sensor in the airtightness tester detects the pressure change in the cavity, calculates the leakage value, and determines whether the product is qualified, thereby completing the independent detection of the airtightness of the product, thereby improving the convenience of the airtightness detection of the engine cylinder head.

[0015] 2. In this application, the side push cylinder pushes the push block. During the process of the push block linking the side aluminum parts, the slider at the bottom of the push block slides synchronously along the slide rail to ensure the stability of the translation of the push block and the side aluminum parts, thereby improving the stability of the use of the two-sided 90-degree sealing airtight test fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the lower mold silicone structure provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 A schematic diagram of the structure of a slider provided according to an embodiment of the present utility model is shown;

[0019] Figure 4Shows a schematic diagram of the top block structure provided according to an embodiment of the utility model;

[0020] Figure 5 A schematic structural diagram of a pressing tool and an airtightness instrument provided according to an embodiment of the utility model is shown.

[0021] Legend:

[0022] 1. Lower aluminum part; 2. Fixed seat; 3. Side push cylinder; 4. Side aluminum part; 5. Upper aluminum part; 6. Guide pillar; 7. Side silicone; 8. Lower mold silicone; 9. Profiling cavity; 10. Push block; 11. Slider; 12. Slide rail; 13. Positioning column; 14. Ejector block; 15. Elastic rod; 16. Upper silicone; 17. Sealing cylinder; 18. Sealing block. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A two-sided 90-degree sealing airtightness test fixture includes a lower aluminum part 1, an upper aluminum part 5, a pressing tool, and an airtightness tester. The top of the lower aluminum part 1 is provided with a contoured cavity 9, and the bottom of the upper aluminum part 5 is integrated with a top block 14 and a positioning column 13. The top block 14 and the lower aluminum part 1 are fixedly connected to the upper silicone rubber 16 and the lower mold silicone rubber 8 on the opposite sides respectively. The top of the lower aluminum part 1 is fixedly connected to a fixing seat 2. The outer side of the fixing seat 2 is integrated with a side aluminum part 4 and a push assembly for pushing the side aluminum part 4 horizontally. The outer wall of the side aluminum part 4 is fixedly connected to the side silicone rubber 7.

[0026] The upper aluminum part 5 and the lower aluminum part 1 are fixed to the booster cylinder output end and the bottom plate of the pressing tool respectively, the airtightness instrument is connected to the profiling cavity 9, the product is placed on the top of the lower aluminum part 1, the booster cylinder pushes the upper aluminum part 5, and the multiple groups of elastic rods 15 at the bottom of the upper aluminum part 5 synchronously link the positioning column 13 and the top block 14, and the positioning column 13 and the top block 14 are respectively combined with the corresponding positions of the product to achieve the vertical limit of the product, and then the side push cylinder 3 pushes the side aluminum part 4 through the push block 10, and the side aluminum part 4 completes the lateral limit of the product. Multiple groups of silicone ensure the sealing between the lower aluminum part 1, the top block 14 and the side aluminum part 4 and the product, so that a closed chamber is formed between the product and the profiling cavity 9, the airtightness instrument rushes the set pressure into the chamber through the precision pressure reducing valve, the pressure sensor in the airtightness instrument detects the chamber pressure change, calculates the leakage value, and determines whether the product is qualified, thereby completing the independent detection of the product's airtightness, thereby improving the convenience of the engine cylinder head airtightness detection;

[0027] It should be noted that the pressing tooling and airtightness tester here are both existing technologies, and their specific working mechanisms and principles will not be elaborated here.

[0028] Specifically, such as Figure 2 and Figure 4 As shown, the horizontal push assembly includes a side push cylinder 3 fixedly connected to the fixed seat 2, and the output end of the side push cylinder 3 is fixedly connected to a push block 10, the outer wall of the push block 10 is fixedly matched with the side aluminum part 4, and the side push cylinder 3 pushes the side aluminum part 4 through the push block 10, and the side aluminum part 4 completes the lateral limitation of the product. The outer wall of the push block 10 is fixedly connected to the side aluminum part 4 through the spring, and multiple groups of elastic rods 15 are fixedly connected to the bottom of the upper aluminum part 5. The multiple groups of elastic rods 15 are respectively fixedly matched with the top block 14 and the positioning column 13, thereby providing flexible characteristics for the side aluminum part 4, the top block 14 and the positioning column 13, thereby ensuring the positioning effect of the product.

[0029] Specifically, such as Figure 2 and Figure 3 As shown, the push block 10 and the opposite surfaces of the lower aluminum part 1 are fixedly connected with a slider 11 and a slide rail 12, and the slider 11 is slidably connected to the slide rail 12. The side push cylinder 3 pushes the push block 10. In the process of the push block 10 linking the side aluminum part 4, the slider 11 at the bottom of the push block 10 slides synchronously along the slide rail 12, thereby ensuring the stability of the translation of the push block 10 and the side aluminum part 4, thereby improving the stability of the use of the two-sided 90-degree sealing airtight test fixture.

[0030] Specifically, such as Figure 1 and Figure 2 As shown, the top of the lower aluminum part 1 is fixedly connected to a guide column 6, and the inner wall of the upper aluminum part 5 is slidingly connected to the outer wall of the guide column 6, thereby ensuring the stable alignment of the upper aluminum part 5 and the lower aluminum part 1. The bottom of the upper aluminum part 5 is fixedly connected to a sealing cylinder 17, and the output end of the sealing cylinder 17 is fixedly connected to a sealing block 18, thereby sealing the opening of the engine cylinder head.

[0031] Working principle: fix the upper aluminum part 5 and the lower aluminum part 1 to the booster cylinder output end and the bottom plate of the pressing tool respectively, connect the airtightness meter to the profiling cavity 9, place the product on the top of the lower aluminum part 1, and the booster cylinder pushes the upper aluminum part 5. The multiple sets of elastic rods 15 at the bottom of the upper aluminum part 5 synchronously link the positioning column 13 and the top block 14. The positioning column 13 and the top block 14 are respectively combined with the corresponding positions of the product to achieve the vertical limit of the product. Then the side push cylinder 3 pushes the side aluminum part 4 through the push block 10. The side aluminum part 4 completes the lateral limit of the product. Multiple sets of silicone ensure the sealing between the lower aluminum part 1, the top block 14 and the side aluminum part 4 and the product. A closed chamber is formed between the product and the contoured cavity 9. The airtightness tester injects a set pressure into the chamber through a precision pressure reducing valve. The pressure sensor in the airtightness tester detects the change in chamber pressure, calculates the leakage value, and determines whether the product is qualified. In this way, the independent detection of the airtightness of the product is completed, thereby improving the convenience of the airtightness detection of the engine cylinder head. The side push cylinder 3 pushes the push block 10. During the process of the push block 10 linking the side aluminum part 4, the slider 11 at the bottom of the push block 10 slides synchronously along the slide rail 12, thereby ensuring the stability of the translation of the push block 10 and the side aluminum part 4, thereby improving the stability of the use of the two-sided 90-degree sealing airtight test fixture.

[0032] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-sided 90-degree sealing airtightness test fixture, comprising a lower aluminum part (1), an upper aluminum part (5), a pressing tool and an airtightness tester, characterized in that: The top of the lower aluminum part (1) is provided with a contoured cavity (9), the bottom of the upper aluminum part (5) is integrated with a top block (14) and a positioning column (13), the top block (14) and the opposite surfaces of the lower aluminum part (1) are fixedly connected with an upper silicone rubber (16) and a lower mold silicone rubber (8), the top of the lower aluminum part (1) is fixedly connected with a fixing seat (2), the outer side of the fixing seat (2) is integrated with a side aluminum part (4) and a horizontal pushing assembly for horizontally pushing the side aluminum part (4), and the outer wall of the side aluminum part (4) is fixedly connected with a side silicone rubber (7).

2. The double-sided 90-degree sealing airtightness test fixture according to claim 1, characterized in that: The horizontal push assembly comprises a side push cylinder (3) fixedly connected to a fixed seat (2); an output end of the side push cylinder (3) is fixedly connected to a push block (10); and an outer wall of the push block (10) is fixedly matched with a side aluminum part (4).

3. The double-sided 90-degree sealing airtightness test fixture according to claim 2, characterized in that: The outer wall of the push block (10) is fixedly connected to the side aluminum part (4) through a spring, and the bottom of the upper aluminum part (5) is fixedly connected to multiple groups of elastic rods (15), and the multiple groups of elastic rods (15) are fixedly matched with the top block (14) and the positioning column (13) respectively.

4. The double-sided 90-degree sealing airtightness test fixture according to claim 3, characterized in that: The push block (10) and the opposite surface of the lower aluminum component (1) are respectively fixedly connected with a slider (11) and a slide rail (12), and the slider (11) and the slide rail (12) are slidably connected.

5. The double-sided 90-degree sealing airtightness test fixture according to claim 4, characterized in that: The top of the lower aluminum part (1) is fixedly connected with a guide column (6), and the inner surface wall of the upper aluminum part (5) is slidably connected with the outer surface wall of the guide column (6).

6. The double-sided 90-degree sealing airtightness test fixture according to claim 5, characterized in that: The bottom of the upper aluminum part (5) is fixedly connected to a blocking cylinder (17), and the output end of the blocking cylinder (17) is fixedly connected to a blocking block (18).

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