Testing device and method for integrity of coating on surface of cover of ring-pull can
A surface coating and testing device technology, applied in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of electrolyte leakage, poor fixing effect of tank lid fixing fixtures, etc., to prevent leakage and easy operation. , to ensure stable measurement results
Pending Publication Date: 2018-03-30
CHINA PACKAGING RES & TEST CENT
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Problems solved by technology
However, in the existing test device, the fixing effect of the tank lid fixing fixture is not good, and the electrolyte leakage is very easy to occur.
Method used
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[0026] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
[0027] A device for testing the integrity of the surface coating of a can lid, which includes a bracket 1 and a test fixture for overturning installation. The first pole pin 6 and the second pole pin 12 . The vertical plate, the conductive bottom plate and the conductive top plate are fixed and installed in a U shape, and the vertical plate and the bracket of the test fixture are installed through a rotating shaft. An insulating cup body is fixedly installed on the bottom plate, the bottom surface of the insulating cup body is a conductive cup bottom 8, the conductive cup bottom is fixed to the conductive bottom plate, and the first pole needle located in the insulating cup body is installed on the conductive cup bottom, and the cup mouth of...
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The invention relates to a testing device for the integrity of coating on the surface of a cover of a ring-pull can. The device includes a support and a test fixture arranged in a flip mode; the testfixture includes a vertical plate, a conductive bottom plate, a conductive top plate, an insulated cup body, an air cylinder, a conductive press plate, a first pole needle and a second pole needle. the vertical plate, the conductive bottom plate and the conductive top plate are fixedly installed in a U shape, the vertical plate and the support are installed, the insulated cup body is fixedly installed on the bottom plate, the bottom of a conductive cup body is arranged on the bottom surface of the insulated cup body, the bottom of the conductive cup body is fixed with the conductive bottom plate, the first pole needle located in the insulated cup body is installed on the bottom of the conductive cup body, and an opening of the insulated cup body is matched with the shape of the measured cover of the can; the lower portion of the conductive top plate is provided with the conductive press plate corresponding to the upper portion of the insulated cup body through the air cylinder, the conductive press plate is connected with one end of the second pole needle, and the other end of the second pole needle is connected with the conductive top plate. According to the testing device and method for the integrity of the coating on the surface of the cover of the ring-pull can, leakage of electrolyte can be avoided, and operation is simple, measurement is stable, convenient and accurate.
Description
technical field [0001] The invention relates to the field of packaging inspection, in particular to a testing device and a testing method for the surface coating integrity of pop can lids. Background technique [0002] The inner surface of the can lid of the can is coated with a film to prevent the chemical reaction between the metal can lid and the carbonated beverage contained in it. Therefore, it is necessary to inspect the integrity of the coating on the inner surface of the metal can end to ensure reliable product quality. Most of the existing can end coating integrity testers are composed of an operation panel, a fixture, a power supply, a test pole needle and a fixing fixture. Measure the test current value by applying a voltage to the fixing fixture of the can lid with electrolyte, if the inner coating film is incomplete (damaged), the test current value will be very large, so as to measure a certain resistance value and display it on the panel . However, in the e...
Claims
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IPC IPC(8): G01N27/416
CPCG01N27/416
Inventor 冯勇李志恒贾全铭张昆同李克立
Owner CHINA PACKAGING RES & TEST CENT