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A method and equipment for testing the sealing performance of an adhesive assembly

A technology of sealing performance and testing method, which is applied in the direction of liquid tightness measurement by using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc. It can solve the problems of glue breaking, disappearance, inability to effectively detect it, deformation, etc., and achieve The effect of high automation efficiency

Active Publication Date: 2022-01-04
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current test requirements require the product to meet the waterproof performance of 30m or 50m, which is generally hundreds of kilopascals when converted into a test pressure. However, for such adhesive assemblies, the middle glue is generally soft glue, which will deform under the action of high-pressure gas, causing The broken glue disappears under the force extrusion, and it cannot be effectively detected by the gas flow method

Method used

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  • A method and equipment for testing the sealing performance of an adhesive assembly
  • A method and equipment for testing the sealing performance of an adhesive assembly
  • A method and equipment for testing the sealing performance of an adhesive assembly

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for testing the sealing performance of an adhesive assembly, specifically comprising the following steps:

[0032] (1) The two sides of the adhesive assembly 4 to be tested are blocked by the tooling assembly 3 to form a first sealed chamber 5 and a second sealed chamber 6, wherein the first sealed chamber 5 is connected to the differential pressure sensor 7, and the second sealed chamber 6 Apply test pressure;

[0033] (2) The test is carried out by using a combination test method of high pressure and negative pressure, wherein, the high pressure method test: inject high-pressure gas into the second sealed chamber 6, and record the pressure value P measured by the differential pressure sensor 7 before injecting the high-pressure gas 0 , and the pressure value P of the differential pressure sensor 7 after injecting high-pressure gas 1 , get differential pressure value ΔP1=P 1 -P 0 Negative pressure method test: the air pressure of the second sealed chamber 6...

Embodiment 2

[0045] A leak detection device for implementing the sealing performance test method of an adhesive assembly described in Embodiment 1, comprising an air source 1, a negative pressure generator 2, a differential pressure sensor 7, and a tooling assembly 3; The two sides of the assembly 4 are blocked by the tooling assembly 3 to form a first sealed chamber 5 and a second sealed chamber 6; the gas source 1 is connected to the first sealed chamber 5, and the differential pressure sensor 7 is arranged for connecting On the pipeline between the first sealed chamber 5 and the gas source 1, the gas source 1 is used to adjust the air pressure at both ends of the differential pressure sensor 7 to balance; the gas source 1 and the negative pressure generator 2 are all connected to the second sealed chamber 6 , provide high-pressure gas and vacuum for the second sealed chamber 6 respectively.

[0046] The tooling assembly 3 described in this embodiment includes a tooling seat 19 and a too...

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PUM

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Abstract

The present invention relates to the technical field of airtightness detection equipment, in particular to a method for testing the airtightness of an adhesive assembly, the steps of which include sealing both sides of the adhesive assembly with a tooling assembly to form a first sealed chamber and a second sealed chamber, The high pressure and negative pressure combination test method is used for testing, pressure difference judgment and other steps. The present invention forms a first sealed chamber and a second sealed chamber by sealing the upper and lower surfaces of the product to be tested. The first sealed chamber is used as the test chamber, and the second sealed chamber is used as the inflatable chamber to avoid the problem that when the test chamber and the inflated chamber are the same chamber, the product is deformed and the glue breaks and disappears, making it impossible to detect. At the same time, this patent abandons the method of water sealing and adopts the method of gas testing as a whole, which has high automation efficiency and will not cause damage to the instrument.

Description

technical field [0001] The invention relates to the technical field of airtightness detection equipment, in particular to a method and equipment for testing the airtightness of an adhesive assembly. Background technique [0002] With the development of science and technology, 3C products such as sports bracelets, smart watches, bluetooth remote controls, wireless earphones and other electronic products are widely favored by consumers. Due to the particularity of the use occasions, the waterproof performance of the products is also raised. higher requirements. Products are usually composed of different components. For certain components such as button components, glass window protection components, tablet computer components, etc., these components are usually fixed on the semi-finished module using a dispensing process to form an adhesive assembly. Because both sides of such a component are not sealed, there are usually only two detection methods for such a component. One i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 方振东李效文徐博
Owner GOERTEK INC