Method for detecting bending deformation resisting force of crown-shaped bottle cap
A crown-shaped bottle cap and detection method technology, which is applied in the direction of testing the strength of materials by applying a stable bending force, can solve the problems of expensive testing equipment and inconvenient testing
Active Publication Date: 2013-10-16
TSINGTAO BREWERY
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Problems solved by technology
The main reason is that the finished crown bottle cap is coated with varnish on the front and the back is coated with adhesive. If the hardness of the crown bottle cap is directly tested, the hardness test result will be affected. Therefore, at present, only iron sheet raw materials are tested for hardness, and the testing equipment is expensive. Detection is inconvenient
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specific Embodiment approach
[0020] refer to figure 1 and 2 , the specific embodiment of the present invention is described as follows:
[0021] Use a computer-controlled compression tester, press the "test selection" button, and select the test state as "side pressure test".
[0022] Press the "Up" or "Down" key to adjust the distance between the upper platen 1 and the lower platen 3, and control it to be slightly higher than the standing crown bottle cap 2 by 2-3mm, and press "Stop" when it is about 34.1-35.1mm ” key to set the initial position of the lower platen 3. What this instrument mobilizes is the lower pressing plate 3 of the instrument, and what the up and down keys control is the position of the lower pressing plate 3 .
[0023] Put the bottle cap upright on the middle part of the lower pressing plate 3, and simultaneously use the crown-shaped bottle cap 2 to be close to the cover surface and the skirt of the bottle cap, so that the bottle cap and the lower pressing plate 3 are kept vertica...
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Abstract
The invention provides a method for detecting bending deformation resisting force of a crown-shaped bottle cap by using a computer measurement and control compression tester so as to evaluate the strength of the crown-shaped bottle cap. If the tested numerical value of the bending deformation resisting force of the crown-shaped bottle cap is between 110 and 140N, the strength of the crown-shaped bottle cap is proper; if the tested numerical value of the bending deformation resisting force of the crown-shaped bottle cap is smaller than the range of the numerical value, the crown-shaped bottle cap is too soft; and if the tested numerical value of the bending deformation resisting force of the crown-shaped bottle cap is greater than the range of the numerical value, the crown-shaped bottle cap is too hard. Aiming at the problem of the lack of a strength detecting method special for the finished products of the crown-shaped bottle caps, the method fills in the blank in the field, and the change of the iron substance of the crown-shaped bottle cap is illustrated by data, so that the supply quality of crown-shaped bottle cap is monitored.
Description
technical field [0001] The invention relates to a method for evaluating the strength of the crown-shaped bottle cap by detecting the limit stress of the crown-shaped bottle cap against bending deformation. Background technique [0002] The beer industry generally uses crown-shaped iron bottle caps. Due to the uneven quality of iron in my country's crown-shaped bottle caps, the strength of the iron is not stable, especially the products of some small steel companies. The strength is even more unstable. The iron hardness index of the bottle cap directly affects the sealing performance of the beer and the life of the capping system. If the hardness is too soft, it will easily cause the product to leak during transportation; if the hardness is too hard, it will damage the gland system and increase the maintenance cost of the equipment. [0003] Now the strength index of the iron plate generally adopts the hardness index, and its range is relatively wide. For example, T-4 hardne...
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IPC IPC(8): G01N3/20
Inventor 和强董建军樊伟单连菊皮向荣娄晓红许建新周莹莹高丽峰王书谦
Owner TSINGTAO BREWERY