Multifunctional air tightness tester for automobile water pump aluminum alloy shell

Abstract

The utility model discloses a kind of multifunctional air-tightness tester of automobile water pump aluminum alloy shell, including rack and install to air-tightness detection mechanism and water tank mechanism on rack, water tank mechanism is located below air-tightness detection mechanism and is lift type setting, the air-tightness detection mechanism includes detection rack, bottom plate, sealing tooling, lifting cylinder, lifting plate, pressing assembly and down pressure plate, the detection rack is installed to rack, the top plate of detection rack is fixedly connected with bottom plate by connecting rod, sealing tooling for positioning and placing product is installed on bottom plate, lifting cylinder is also installed on the top plate of detection rack, lifting cylinder drives lifting plate to move up and down, lifting plate lower end is installed with the pressing assembly for compacting product and the down pressure plate for down pressure and seal the hole position above product, air leakage detector is connected to product on sealing tooling. By the above-mentioned mode, the utility model finds the problem point of aluminum alloy shell when high efficiency carries out air-tightness test simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to a multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump. Background Technology

[0002] Currently, the aluminum alloy housings of traditional mechanical water pumps, especially large ones, undergo 100% airtightness testing before assembly to ensure that only qualified housings are selected for assembly and defective products are rejected. Most factories currently use a method where the airtightness test is performed under positive or negative pressure to achieve a housing pressure of 1.0-2.0 MPa. This pressure is maintained for 2-5 seconds before testing for leakage. If the leakage exceeds 50-60 Pa / s, the equipment will deem it unqualified. This existing technology has the following drawbacks: while it can accurately and quickly identify qualified parts, it cannot quickly pinpoint the leak point or determine whether the defect is due to product defects or improper assembly. This necessitates repeated adjustments to tooling or housing placement, requiring multiple tests to determine the housing's quality, resulting in extremely low efficiency.

[0003] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a multi-functional airtightness tester for the aluminum alloy housing of automotive water pumps. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a multi-functional airtightness tester for aluminum alloy housings of automotive water pumps, which can detect the airtightness of products and simultaneously find the problem points of the aluminum alloy housing while efficiently conducting airtightness tests through a water tank that moves up and down.

[0005] To solve the above-mentioned technical problems, the present invention provides a multi-functional airtightness tester for aluminum alloy housings of automotive water pumps. This tester includes a frame and an airtightness testing mechanism and a water tank mechanism mounted on the frame. The water tank mechanism is located below the airtightness testing mechanism and is vertically oriented. The airtightness testing mechanism includes a testing frame, a base plate, a sealing fixture, a lifting cylinder, a lifting plate, a pressing assembly, and a lower pressure plate. The testing frame is mounted on the frame. The top plate of the testing frame is fixedly connected to the base plate via a connecting rod. A sealing fixture for positioning and placing products is mounted on the base plate. A lifting cylinder is also mounted on the top plate of the testing frame, driving the lifting plate to move up and down. A pressing assembly for pressing products and a lower pressure plate for pressing down and sealing the holes above the products are mounted on the lower end of the lifting plate. An air leakage detector is connected to the product on the sealing fixture.

[0006] Preferably, the sealing fixture includes a fixture base plate, a positioning block, a sealing base plate, a positioning pin, a side-push cylinder, and a side-push sealing plate. The fixture base plate is equipped with a positioning block for placing the product and a sealing base plate for sealing the holes in the product base plate. The sealing base plate is equipped with a positioning pin that can quickly position the product. The fixture base plate is also equipped with two side-push cylinders, which drive the side-push sealing plate to extend and block the through holes on the side end of the product.

[0007] Preferably, the pressing assembly includes connecting columns, springs, and pressing heads. Several connecting columns are installed on the lifting plate, and the connecting columns are elastically connected to the pressing heads below them via springs.

[0008] Preferably, the lifting cylinder is treated with rust prevention.

[0009] Preferably, the water tank mechanism includes a lifting cylinder vertically mounted on the machine frame workbench, a water tank driven by the lifting cylinder to move up and down, a plurality of guide rods vertically mounted on the machine frame workbench, and guide sleeves mounted on the water tank and corresponding to the guide rods, with the guide sleeves fitted onto the guide rods.

[0010] Preferably, the inner liner of the water tank is made of engineering plastic, the inner and outer surfaces of the outer liner of the water tank are galvanized, the water tank is rust-proof, and the guide rod and guide sleeve are rust-proof.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] Air tightness testing agencies can quickly locate, compress, and seal products for subsequent air tightness testing;

[0013] By moving the water tank up and down, the system can efficiently conduct airtightness tests while simultaneously identifying potential problems with the aluminum alloy casing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump.

[0015] Figure 2 This is a partial structural schematic diagram of a multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump.

[0016] Figure 3 This is a partial structural schematic diagram of a multifunctional airtightness tester for an aluminum alloy housing of an automotive water pump.

[0017] Among them, 1. rack;

[0018] 2. Air tightness testing mechanism, 21. Testing frame, 22. Base plate, 23. Sealing fixture, 231. Fixture base plate, 232. Positioning block, 233. Sealing base plate, 234. Positioning pin, 235. Side push cylinder, 236. Side push sealing plate, 24. Lifting cylinder, 25. Lifting plate, 26. Pressing assembly, 261. Connecting column, 262. Spring, 263. Press head, 27. Lower pressure plate;

[0019] 3. Water tank mechanism; 31. Lifting cylinder; 32. Water tank; 33. Guide rod; 34. Guide sleeve. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] Please see Figures 1 to 3 The embodiments of this utility model include:

[0022] A multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump is provided. The multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump includes a frame 1 and an airtightness testing mechanism 2 and a water tank mechanism 3 mounted on the frame 1. The water tank mechanism 3 is located below the airtightness testing mechanism 2 and is arranged in a lifting manner.

[0023] The airtightness testing mechanism 2 includes a testing frame 21, a base plate 22, a sealing fixture 23, a lifting cylinder 24, a lifting plate 25, a pressing assembly 26, and a lower pressing plate 27. The testing frame 21 is mounted on the frame 1. The top plate of the testing frame 21 is fixedly connected to the base plate 22 via a connecting rod. The sealing fixture 23 for positioning and placing the product is mounted on the base plate 22. The lifting cylinder 24 is also mounted on the top plate of the testing frame 21. Considering the actual usage environment, the lifting cylinder 24 is designed to be rust-proof, and the German Festo cylinder is recommended to meet the design requirements. The lifting cylinder 24 drives the lifting plate 25 to move up and down. The lower end of the lifting plate 25 is equipped with a pressing assembly 26 for pressing the product and a lower pressing plate 27 for pressing down and sealing the upper hole of the product. An air leak detector is connected to the product on the sealing fixture 23. The COSMO LS-R912 is recommended. This device has positive and negative pressure functions, meets the needs of new product development and mass production, and has high accuracy and reliability.

[0024] The sealing fixture 23 includes a fixture base plate 231, a positioning block 232, a sealing base plate 233, a positioning pin 234, a side-push cylinder 235, and a side-push sealing plate 236. The fixture base plate 231 is equipped with a positioning block 232 for placing the product and a sealing base plate 233 for sealing the holes in the product base plate. The sealing base plate 233 is equipped with a positioning pin 234 that can quickly position the product. The fixture base plate 231 is also equipped with two side-push cylinders 235. The side-push cylinders 235 drive the side-push sealing plate 236 to extend and block the through hole on the side end of the product.

[0025] The pressing assembly 26 includes connecting columns 261, springs 262, and pressing heads 263. Several connecting columns 261 are installed on the lifting plate 25, and the connecting columns 261 are elastically connected to the pressing heads 263 below them through springs 262.

[0026] The water tank mechanism 3 includes a lifting cylinder 31 vertically mounted on the workbench of the frame 1, a water tank 32 driven by the lifting cylinder 31 to move up and down, several guide rods 33 vertically mounted on the workbench of the frame 1, and guide sleeves 34 mounted on the water tank 32 and corresponding to the guide rods 33. The guide sleeves 34 are fitted onto the guide rods 33. The inner liner of the water tank 32 is made of engineering plastic, and the inner and outer surfaces of the outer liner of the water tank 32 are galvanized. In humid environments, the water tank 32 needs to be rust-proofed, and the guide rods 33 and guide sleeves 34 are rust-proofed.

[0027] When this utility model discloses a multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump, the aluminum alloy housing of the automotive water pump to be tested is placed on the sealing fixture 23 to position and seal the product. An air leak detector is connected to the product. The lifting cylinder 24 drives the lifting plate 25 to move downward. The lifting plate 25 drives the pressing assembly 26 to move downward and press the product, which in turn drives the lower pressure plate 27 to press down and seal the product. The air leak detector starts the airtightness test, using positive or negative pressure to make the housing pressure reach 1.0-2.0 MPa. At the same time, the internal pressure of the housing is maintained for 2-5 seconds, and then the air leak detector is used to test the leakage. If the leakage does not exceed 50-60 Pa / s, the product is qualified. Otherwise, the lifting cylinder 31 drives the water tank 32 to move upward. When the product is in the water tank 32, the liquid level is higher than the product, and the leakage point of the product is directly found.

[0028] This utility model relates to a multi-functional airtightness tester for aluminum alloy housings of automotive water pumps. It can detect the airtightness of products. By moving the water tank up and down, it can efficiently perform airtightness testing while simultaneously identifying problems with the aluminum alloy housing. The multi-functional airtightness tester can quickly and accurately determine whether the aluminum alloy housing is qualified.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump, characterized in that: The device includes a frame and an airtightness testing mechanism and a water tank mechanism mounted on the frame. The water tank mechanism is located below the airtightness testing mechanism and is designed to be lifted. The airtightness testing mechanism includes a testing frame, a base plate, a sealing fixture, a lifting cylinder, a lifting plate, a pressing assembly, and a lower pressure plate. The testing frame is mounted on the frame. The top plate of the testing frame is fixedly connected to the base plate via a connecting rod. A sealing fixture for positioning and placing the product is mounted on the base plate. A lifting cylinder is also mounted on the top plate of the testing frame. The lifting cylinder drives the lifting plate to move up and down. A pressing assembly for pressing the product and a lower pressure plate for pressing down and sealing the holes above the product are mounted on the lower end of the lifting plate. An air leak detector is connected to the product on the sealing fixture.

2. The multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump according to claim 1, characterized in that: The sealing fixture includes a fixture base plate, a positioning block, a sealing base plate, a positioning pin, a side-push cylinder, and a side-push sealing plate. The fixture base plate is equipped with a positioning block for placing the product and a sealing base plate for sealing the holes in the product base plate. The sealing base plate is equipped with a positioning pin that can quickly position the product. The fixture base plate is also equipped with two side-push cylinders, which drive the side-push sealing plate to extend and block the through hole on the side end of the product.

3. The multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump according to claim 1, characterized in that: The pressing assembly includes connecting columns, springs, and pressing heads. Several connecting columns are installed on the lifting plate, and the connecting columns are elastically connected to the pressing heads below them via springs.

4. The multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump according to claim 1, characterized in that: The lifting cylinder is treated with rust prevention.

5. A multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump according to claim 1, characterized in that: The water tank mechanism includes a lifting cylinder vertically mounted on the machine frame workbench, a water tank driven by the lifting cylinder to move up and down, several guide rods vertically mounted on the machine frame workbench, and guide sleeves mounted on the water tank and corresponding to the guide rods, with the guide sleeves fitted onto the guide rods.

6. A multi-functional airtightness tester for an aluminum alloy housing of an automotive water pump according to claim 5, characterized in that: The inner liner of the water tank is made of engineering plastic, and the inner and outer surfaces of the outer liner of the water tank are galvanized to prevent rust. The guide rod and guide sleeve are also rust-proof.

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