Air tightness detection device for inlaid casting parts

Abstract

The utility model relates to the technical field of mechanical part detection, in particular to an air tightness detection device for embedded and cast parts. Comprising a base, a cover plate, a double-view panel set, a first sealing gasket, a second sealing gasket, a third sealing gasket, a sealing locking piece and a locking assembly. The double-view panel group and the cover plate are sequentially buckled and pressed on the top of the base, the first sealing gasket is pressed between the base and the double-view panel group, the second sealing gasket is pressed between the double-view panel group and the cover plate, and the third sealing gasket is embedded in an inner cavity in the bottom of the cover plate; the sealing locking piece sequentially penetrates through the window of the cover plate and the square hole of the double-observation panel set to be locked with the base. According to the utility model, the air tightness of the double-view panel group is conveniently and visually detected through the detection device, the assembly yield is improved, and the detection cost of the air tightness of the double-view panel group can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical parts detection, in particular to an airtightness detection device for inlay casting parts. Background Art

[0002] The double-view panel assembly in the company's products is composed of main aluminum material and inlays. The prefabricated inlay material is copper, and the copper parts are inlaid in the main parts by pouring aluminum liquid to achieve local wear resistance. During the casting process, this part is prone to defects such as sand holes and gaps at the inlaid joint surface, resulting in the exposure of internal defects after the part is cut and processed, and the airtightness requirements cannot be met. Obvious defects can be directly discovered by naked eye observation, but there has been a lack of detection methods for air leaks caused by microscopic defects. In order to prevent unqualified components from flowing to the assembly site, it is necessary to design a detection device that can easily screen out components with qualified airtightness, thereby improving the assembly yield and achieving the purpose of controlling costs.

[0003] There are four main methods for detecting casting defects: visual inspection, X-ray inspection, ultrasonic inspection, and penetrant inspection. 1) Visual inspection is a method of observing surface defects of parts with human eyes, which can observe larger and more obvious defects. 2) X-ray inspection uses the ability of X-rays to penetrate metal materials. The absorption capacity of X-rays in defective areas and conventional material areas is different, and the intensity of X-rays falling on the film is also different. Therefore, the shape, size, and position of the defects can be reflected from the photos. 3) Ultrasonic inspection is a non-destructive inspection method that uses the difference in acoustic properties between the normal position and defect position of the material, the reflection of the sound wave propagation waveform, and the energy change of the penetration time to detect internal defects of the material. 4) Penetrant inspection uses liquid penetrants to remain on the surface of the part for a preset time limit, and enter the surface open defects through "capillary action". After the excess penetrant on the surface of the part is cleaned, a developer is applied to the surface of the part to penetrate into the defect to make it color and appear.

[0004] The existing technologies have the following shortcomings: 1) Visual inspection can only observe large-scale defects on the surface of parts, but cannot find microscopic defects, and cannot completely screen out unqualified parts. 2) X-ray inspection and ultrasonic inspection are costly, and different materials in inlaid casting parts have different absorption capacity for radiation and reflection of sound waves, so the inspection effect is not ideal. 3) Penetrant inspection requires consumables and is costly. Only qualified inspectors can analyze the visible traces. It mainly detects the distribution of surface defects and cannot achieve airtightness inspection of parts. Utility Model Content

[0005] The purpose of the utility model is to provide an airtightness detection device for inlaying casting parts, through which the airtightness of a double-view panel group can be conveniently and intuitively detected, thereby improving the assembly yield and reducing the detection cost of the airtightness of the double-view panel group.

[0006] To solve the above technical problems, the utility model provides an airtightness detection device for inlaying casting parts, comprising: a base, a cover plate, a double-viewing panel group, a first sealing gasket, a second sealing gasket, a third sealing gasket, a sealing locking piece and a locking assembly; the top of the base is sequentially buckled and pressed with the double-viewing panel group and the cover plate, the first sealing gasket is pressed between the base and the double-viewing panel group, the second sealing gasket is pressed between the double-viewing panel group and the cover plate, and the third sealing gasket is embedded in the bottom inner cavity of the cover plate; the sealing locking piece passes through the window of the cover plate and the square hole of the double-viewing panel group in turn and is locked with the base; the base and the cover plate are pressed by the circumferentially arranged locking assembly.

[0007] Preferably, the base is a cavity for accommodating pressurized air, and an air filling port is provided on the base for connecting an air compressor; the bottom of the inner cavity of the base also includes an integrally formed boss cylinder, and the boss cylinder includes a screw hole that is threadedly locked with the sealing locking piece.

[0008] Preferably, the first sealing gasket and the second sealing gasket are respectively used to seal the bottom and top of the through hole on the main aluminum material of the double-viewing panel group, the third sealing gasket is used to seal the top of the through hole on the inlay of the double-viewing panel group, and the sealing locking piece is used to seal the top of the hole above the inlay of the double-viewing panel group.

[0009] Preferably, the sealing locking member comprises: a sealing cover, a stud, a handle and a sealing ring; the stud is axially provided at the bottom of the sealing cover, the handle is transversely provided at the top of the sealing cover, the sealing ring is pressed between the sealing cover and the square hole on the inlay of the double-viewing panel group, and is threadedly connected to the screw hole through the stud.

[0010] Preferably, the number of the locking assemblies arranged circumferentially is eight.

[0011] Preferably, the locking assembly includes: a U-shaped boss, a locking rod and a locking nut; the U-shaped bosses are circumferentially correspondingly provided on the side walls of the base and the cover plate, and the locking rod is rotatably connected to the U-shaped boss on the base, and the upper end of the locking rod can be rotatably placed in the cavity of the U-shaped boss on the cover plate, and the base and the cover plate can be pressed and fastened together by screwing the locking nut onto the locking rod.

[0012] Preferably, it also includes a screw, a washer and a nut; the lower end of the locking rod is movably inserted into the U-shaped boss on the base through the screw, and the other end of the screw is locked by the washer and the nut.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1) Compared with visual inspection, the utility model can conveniently and intuitively judge the air tightness of the double-view panel group by observing the escaped bubbles, without any misjudgment or omission.

[0015] 2) Compared with X-ray detection, ultrasonic detection and fluorescent flaw detection, the utility model has low cost, is easy to operate, and can more thoroughly detect the air tightness of the double-view panel assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural exploded view of the air tightness detection device for inlaying casting parts.

[0017] In the figure: 1-base; 2-cover plate; 3-first sealing gasket; 4-second sealing gasket; 5-third sealing gasket; 6-sealing cover; 61-stud; 62-boss cylinder; 7-handle; 8-sealing ring; 9-double-viewing panel assembly; 10-U-shaped boss; 11-screw; 12-washer; 13-nut; 14-locking rod; 15-locking nut. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0019] like Figure 1As shown, the embodiment of the utility model provides an airtightness detection device for inlaying casting parts, including: a base 1, a cover plate 2, a double-viewing panel group 9, a first sealing gasket 3, a second sealing gasket 4, a third sealing gasket 5, a sealing locking member and a locking assembly; the top of the base 1 is sequentially buckled and pressed with the double-viewing panel group 9 and the cover plate 2, the first sealing gasket 3 is pressed between the base 1 and the double-viewing panel group 9, the second sealing gasket 4 is pressed between the double-viewing panel group 9 and the cover plate 2, and the third sealing gasket 5 is embedded in the bottom inner cavity of the cover plate 2; the sealing locking member sequentially passes through the window of the cover plate 2 and the square hole of the double-viewing panel group 9 to lock with the base 1; the base 1 and the cover plate 2 are compressed by the circumferentially arranged locking assembly. The base 1 and the cover plate 2 are used to fix the double-viewing panel group 9 to be tested, and the first sealing gasket 3, the second sealing gasket 4, the third sealing gasket 5 and the sealing ring 8 are made of silicone rubber, matched with the shape of the parts, and placed above and below the double-viewing panel group 9 to play the role of pressurizing and sealing each through hole.

[0020] The base 1 is a cavity for accommodating pressurized air, and an air filling port is provided on the base 1 for connecting an air compressor; the bottom of the inner cavity of the base 1 also includes an integrally formed boss cylinder 62, and the boss cylinder 62 includes a screw hole that is threadedly locked with a sealing locking member.

[0021] The first sealing gasket 3 and the second sealing gasket 4 are respectively used to seal the bottom and top of the through hole on the main aluminum material of the double-viewing panel group 9, the third sealing gasket 5 is used to seal the top of the through hole on the inlay of the double-viewing panel group 9, and the sealing locking piece is used to seal the top of the hole above the inlay of the double-viewing panel group 9.

[0022] The sealing locking member includes: a sealing cover 6, a stud 61, a handle 7 and a sealing ring 8; the bottom of the sealing cover 6 is axially provided with a stud 61, the top of the sealing cover 6 is transversely provided with a handle 7, the sealing ring 8 is pressed between the sealing cover 6 and the square hole on the inlay of the double-viewing panel assembly 9, and is threadedly connected with the screw hole through the stud 61. The handle 7 drives the sealing cover 6 to rotate, is threadedly connected to the screw hole on the inner cavity boss cylinder 62 of the base 1, and applies pressure to the sealing ring 8 to seal the surface square hole of the double-viewing panel assembly 9.

[0023] The number of locking assemblies arranged in the circumferential direction is eight.

[0024] The locking assembly includes: a U-shaped boss 10, a locking rod 14 and a locking nut 15; the side walls of the base 1 and the cover plate 2 are circumferentially correspondingly provided with U-shaped bosses 10, and the locking rod 14 is rotatably connected to the U-shaped boss 10 located on the base 1, and the upper end of the locking rod 14 can be rotatably placed in the cavity of the U-shaped boss 10 on the cover plate 2, and the base 1 and the cover plate 2 can be pressed and buckled together by screwing the locking nut 15 on the locking rod 14.

[0025] It also includes a screw 11, a washer 12 and a nut 13; the lower end of the locking rod 14 is movably plugged into the U-shaped boss 10 on the base 1 through the screw 11, and the other end of the screw 11 is locked through the washer 12 and the nut 13.

[0026] It also includes the following working principle: put the assembled detection device into the water tank and observe whether the window on the cover plate 2 is below the horizontal plane. Connect the air compressor to continuously send compressed air into the cavity of the base 1. Using the characteristics of air penetrating all holes and flowing in the direction of low pressure, observe the situation of bubbles in the window of the cover plate 2. If there are defects or capillary pores on the inlay joint surface of the double-view panel assembly 9, there will be obvious bubbles escaping from the window, which can be used to judge whether the air tightness of the parts is qualified. After the inspection of a double-view panel assembly 9 is completed, remove the sealing cover 6 and the sealing ring 8, loosen the locking nut 15, remove the cover plate 2 and the second sealing gasket 4, and replace the next double-view panel assembly 9.

[0027] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An airtightness detection device for inlay casting parts, It is characterized in that include: A base (1), a cover plate (2), a double-viewing panel group (9), a first sealing gasket (3), a second sealing gasket (4), a third sealing gasket (5), a sealing locking piece and a locking assembly; the top of the base (1) is sequentially buckled and pressed with the double-viewing panel group (9) and the cover plate (2); the first sealing gasket (3) is pressed between the base (1) and the double-viewing panel group (9); the second sealing gasket (4) is pressed between the double-viewing panel group (9) and the cover plate (2); the third sealing gasket (5) is embedded in the bottom inner cavity of the cover plate (2); the sealing locking piece sequentially passes through the window of the cover plate (2) and the square hole of the double-viewing panel group (9) to be locked with the base (1); the base (1) and the cover plate (2) are pressed by the locking assembly arranged circumferentially.

2. An airtightness detection device for inlay casting parts as claimed in claim 1, It is characterized in that The base (1) is a cavity for accommodating pressurized air, and an air filling port is provided on the base (1) for connecting an air compressor; the bottom of the inner cavity of the base (1) also includes an integrally formed boss cylinder (62), and the boss cylinder (62) includes a screw hole provided thereon for threaded locking with the sealing locking member.

3. An airtightness detection device for inlay casting parts as claimed in claim 1, It is characterized in that The first sealing gasket (3) and the second sealing gasket (4) are respectively used to seal the bottom and top of the through hole on the main aluminum material of the double-viewing panel group (9), the third sealing gasket (5) is used to seal the top of the through hole on the inlay of the double-viewing panel group (9), and the sealing locking member is used to seal the top of the hole above the inlay of the double-viewing panel group (9).

4. An airtightness detection device for inlay casting parts as claimed in claim 2, It is characterized in that The sealing locking member comprises: a sealing cover (6), a stud (61), a handle (7) and a sealing ring (8); the stud (61) is axially arranged at the bottom of the sealing cover (6), the handle (7) is transversely arranged at the top of the sealing cover (6), and the sealing ring (8) is pressed between the sealing cover (6) and the square hole on the inlay of the double-viewing panel assembly (9), and is threadedly connected to the screw hole through the stud (61).

5. The air tightness detection device for inlay casting parts according to claim 1, It is characterized in that The number of the locking assemblies arranged in the circumferential direction is eight.

6. The air tightness detection device for inlay casting parts according to claim 1, It is characterized in that The locking assembly comprises: a U-shaped boss (10), a locking rod (14) and a locking nut (15); the U-shaped bosses (10) are circumferentially arranged on the side walls of the base (1) and the cover plate (2); the locking rod (14) is rotatably connected to the U-shaped boss (10) on the base (1); the upper end of the locking rod (14) can be rotatably placed in the cavity of the U-shaped boss (10) on the cover plate (2); and the base (1) and the cover plate (2) can be pressed and fastened together by screwing the locking nut (15) onto the locking rod (14).

7. An airtightness detection device for inlay casting parts as claimed in claim 6, It is characterized in that It also includes a screw (11), a washer (12) and a nut (13); the lower end of the locking rod (14) is movably plugged into the U-shaped boss (10) on the base (1) through the screw (11), and the other end of the screw (11) is locked through the washer (12) and the nut (13).

Images