Leakage test detection device for die-casting alloy parts
By designing a leak detection device for die-cast alloy parts, and utilizing a water tank, lifting support frame, and sealing and pressing device, the problem of difficulty in detecting internal air slag pores in parts in existing technologies has been solved, achieving efficient and convenient airtightness testing.
Patent Information
- Application Number
- CN202423129198.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-18
AI Technical Summary
After die casting, it is difficult to detect the internal slag pores or shrinkage cavities of die-cast alloy parts, which affects the airtightness of the product and leads to unqualified mechanical properties.
A leak detection device was designed, including a water tank, a lifting support frame, a front sealing and pressing device, and a side sealing and pressing device. Air is introduced into the sealing cavity through an air intake device, and bubbles are observed to detect the internal airtightness of the parts.
It achieves complete visual monitoring of leak detection, improves detection efficiency and effectiveness, and is simple to operate and easy to maintain.
Smart Images
Figure CN223485408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, and in particular to a leak detection device for die-cast alloy parts. Background Technology
[0002] After die-cast alloy parts are die-cast, an irregular groove structure is formed on one side, and through holes are opened on the side to connect the groove wall. Due to the characteristics of the die-casting process, some slag holes or shrinkage cavities will be generated in some local areas inside the parts, which are not easy to detect. They may be exposed after the product is machined. For parts with high airtightness requirements, these holes will cause leakage, directly affecting the mechanical properties of the product and causing the product to be unqualified. Summary of the Invention
[0003] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model discloses a leak detection device for die-cast alloy parts.
[0004] Technical solution: The leak detection device for die-cast alloy parts of this utility model has a groove on one side and a through hole communicating with the groove on the side. The leak detection device includes:
[0005] sink;
[0006] A lifting support frame is placed inside a water tank, and the die-cast alloy part is placed on the lifting support frame, which drives it to be immersed in / exposed in the water tank.
[0007] A front sealing and pressing device is provided on a lifting support frame to press the front of the die-cast alloy part so that the groove forms a sealing cavity;
[0008] A side sealing and pressing device is provided on the lifting support frame to press the through hole on the side of the die-cast alloy part to seal the outside of the through hole;
[0009] An air intake device is connected to the outer inlet of the through hole. When the front sealing and pressing device and the side sealing and pressing device work together on the die-cast alloy part and the die-cast alloy part is underwater, air is introduced into the sealing cavity through the through hole via the air intake device to detect the internal airtightness of the part.
[0010] Furthermore, the water tank is equipped with a water inlet pipe.
[0011] The lifting support frame includes a guide column placed in a water tank. The guide column is provided with a fixed plate and a lifting plate from top to bottom. The fixed plate is provided with a cylinder. The telescopic end of the cylinder is fixed to the lifting plate, driving it to rise and fall. The lifting plate is mounted on the guide column through a sliding sleeve.
[0012] Furthermore, the front sealing and pressing device includes a positioning sealing plate placed on a lifting support frame. The positioning sealing plate is provided with a sealing ring corresponding to the groove edge of the die-cast alloy part. After the die-cast alloy part is placed on the positioning sealing plate, a sealing cavity is formed inside with a through hole as the only air inlet. The lifting support frame is provided with a fixed frame, and the fixed frame is provided with a first connecting rod pressing member. A pressing plate is fixed at its driving end. The pressing plate is spaced at pressing columns corresponding to the edge of the die-cast alloy part. By controlling the first connecting rod pressing member to press down, the die-cast alloy part and the positioning sealing plate are tightly sealed.
[0013] Furthermore, the side sealing and pressing device includes a second connecting rod pressing member placed on the lifting support frame. Its driving end corresponds to the through hole and is fixed with a hollow pressing column. The pressing end of the hollow pressing column is provided with an annular sealing ring. By controlling the side pressure of the second connecting rod pressing member, the hollow pressing column is made to be tightly sealed with the through hole.
[0014] Furthermore, the air intake device includes an air pipe, and the side wall of the hollow compression column has an opening through which the air pipe is connected to supply air to the sealed cavity.
[0015] Furthermore, the leak detection device also includes a lifting switch for controlling the lifting support frame, a pressure control switch for controlling the air intake of the air pipe, and a pressure gauge for displaying real-time air pressure.
[0016] Beneficial effects: Compared with the prior art, the advantages of this utility model are: the leak testing process is completely visual, the leak testing effect is good, and the efficiency is high; it is easy to operate and has low technical requirements for operators; the device has a simple structure and is easy to maintain. Attached Figure Description
[0017] Figure 1 This is an overall structural diagram of the present invention;
[0018] Figure 2 This is a structural diagram of the positioning and sealing plate of this utility model. Detailed Implementation
[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0020] like Figure 1 and 2 The leak detection device for die-cast alloy parts shown has a groove on one side and a through hole communicating with the groove on the side. Therefore, it is necessary to perform leak detection on the groove part of the part.
[0021] The leak detection device in this patent includes:
[0022] Water tank 2, wherein the water tank 2 is provided with a water inlet pipe 201.
[0023] A lifting support frame is placed inside a water tank 2. The die-cast alloy part 1 is placed on the lifting support frame and is driven by the lifting support frame to be immersed / exposed in the water of the water tank. The lifting support frame includes a guide column 301 placed inside the water tank 2. The guide column 301 is provided with a fixed plate 302 and a lifting plate 303 from top to bottom. A cylinder 305 is provided on the fixed plate 302. The telescopic end of the cylinder is fixed to the lifting plate 303, driving it to rise and fall vertically. The lifting plate 303 is provided on the guide column 301 through a sliding sleeve 304, which plays a guiding role.
[0024] A front sealing and pressing device is provided, mounted on a lifting support frame, to press the front of the die-cast alloy part 1 to form a sealed cavity in the groove. The front sealing and pressing device includes a positioning sealing plate 401 placed on the lifting support frame. A sealing ring 402 is provided on the positioning sealing plate 401 corresponding to the groove edge of the die-cast alloy part 1. Positioning pins can be pre-set to facilitate the positioning of the die-cast alloy part 1 and the positioning sealing plate 401. After the die-cast alloy part 1 is placed on the positioning sealing plate 401, a sealed cavity is formed inside with a through hole as the sole air inlet. A fixing frame 403 is provided on the lifting support frame, and a first connecting rod pressing member 404 is provided on the fixing frame 403. The first connecting rod pressing member 404 is located directly above the die-cast alloy part 1, and a pressing plate 405 is fixed to its driving end. The pressing plate 405 is spaced at pressing posts 406 corresponding to the edge of the die-cast alloy part 1. By controlling the first connecting rod pressing member 404 to press down, the die-cast alloy part 1 and the positioning sealing plate 401 are tightly sealed.
[0025] A side-sealing and pressing device is provided, which is mounted on a lifting support frame to press the through hole on the side of the die-cast alloy part 1 to seal the outside of the through hole. The side-sealing and pressing device includes a second connecting rod pressing member 501 placed on the lifting support frame, the driving end of which corresponds to the through hole and is fixed with a hollow pressing column 502. The pressing end of the hollow pressing column 502 is provided with an annular sealing ring 503. By controlling the side pressure of the second connecting rod pressing member 501, the hollow pressing column 502 is made to fit tightly with the through hole. The air intake device includes an air pipe 601. The side wall of the hollow pressing column 502 has an opening, which connects to the air pipe 601 to supply air to the sealed cavity.
[0026] An air intake device is connected to the outer inlet of the through hole. When the front sealing and pressing device and the side sealing and pressing device work together on the die-cast alloy part 1 and the die-cast alloy part 1 is underwater, air is introduced into the sealing cavity through the through hole via the air intake device. By observing whether bubbles emerge, the internal airtightness of the part can be judged and whether the part is qualified can be detected.
[0027] The leak detection device also includes a lifting switch 701 for controlling the lifting support frame, a pressure control switch 702 for controlling the air intake of the air pipe, and a pressure gauge 703 for displaying real-time air pressure.
Claims
1. A leak detection device for die-cast alloy parts, wherein the die-cast alloy part (1) has a groove on one side and a through hole communicating with the groove on the side, characterized in that, Leak detection device includes: sink(2); The lifting support frame is placed in the water tank (2), and the die-cast alloy part (1) is placed on the lifting support frame and is driven by the lifting support frame to be immersed in / exposed in the water tank. A front sealing and pressing device is provided on a lifting support frame to press the front of the die-cast alloy part (1) so that the groove forms a sealing cavity. Side sealing and pressing device, the side sealing and pressing device is set on the lifting support frame to press the through hole on the side of the die-cast alloy part (1) to seal the outside of the through hole; An air intake device is connected to the outer inlet of the through hole. When the front sealing and pressing device and the side sealing and pressing device work together on the die-cast alloy part (1) and the die-cast alloy part (1) is underwater, air is introduced into the sealing cavity through the through hole via the air intake device to detect the internal airtightness of the part.
2. The leak detection device for die-cast alloy parts according to claim 1, characterized in that: The water tank (2) is equipped with a water inlet pipe (201).
3. The leak detection device for die-cast alloy parts according to claim 1, characterized in that: The lifting support frame includes a guide column (301) placed in a water tank (2). The guide column (301) is provided with a fixed plate (302) and a lifting plate (303) from top to bottom. The fixed plate (302) is provided with a cylinder (305). The telescopic end of the cylinder is fixed to the lifting plate (303) to drive it to rise and fall. The lifting plate (303) is provided on the guide column (301) through a sliding sleeve (304).
4. The leak detection device for die-cast alloy parts according to claim 1, characterized in that: The front sealing and pressing device includes a positioning sealing plate (401) placed on a lifting support frame. The positioning sealing plate (401) is provided with a sealing ring (402) corresponding to the groove edge of the die-cast alloy part (1). After the die-cast alloy part (1) is placed on the positioning sealing plate (401), a sealing cavity is formed inside with a through hole as the only air inlet. The lifting support frame is provided with a fixed frame (403). The fixed frame (403) is provided with a first connecting rod pressing member (404). A pressing plate (405) is fixed at its driving end. The pressing plate (405) is provided at a distance from the edge of the die-cast alloy part (1) on the pressing column (406). By controlling the first connecting rod pressing member (404) to press down, the die-cast alloy part (1) and the positioning sealing plate (401) are tightly connected.
5. The leak detection device for die-cast alloy parts according to claim 1, characterized in that: The side sealing and pressing device includes a second connecting rod pressing member (501) placed on the lifting support frame. Its driving end corresponds to the through hole and is fixed with a hollow pressing column (502). The pressing end of the hollow pressing column (502) is provided with an annular sealing ring (503). By controlling the side pressing of the second connecting rod pressing member (501), the hollow pressing column (502) is made to be tightly sealed with the through hole.
6. The leak detection device for die-cast alloy parts according to claim 5, characterized in that: The air intake device includes an air pipe (601), and the side wall of the hollow compression column (502) has an opening, through which the air pipe (601) is connected to supply air to the sealed cavity.
7. The leak detection device for die-cast alloy parts according to claim 1, characterized in that: The leak detection device also includes a lifting switch (701) for controlling the lifting support frame, a pressure control switch (702) for controlling the air intake of the air pipe, and a pressure gauge (703) for displaying the real-time air pressure.