Production method of level bubble shell

Abstract

The invention relates to a method for producing a level bubble shell, and is characterized in that a level bubble core sleeve is adopted, at least two convex rings are produced on the surface of the level bubble core sleeve in advance, and are distributed on the left side and the right side of the surface of the level bubble core sleeve, then the level bubble core sleeve is injection-molded with transparent plastic concentrically, and embedded and fixed in a plastic level bubble blank, the sleeve body part of the level bubble core sleeve in the level bubble blank is turned, the convex ring parts are embedded into the level bubble blank to be used as scales, and thus the level bubble core sleeve is produced. The method has the advantages of simple and reasonable technology, easy production, high efficiency and high precision of obtained level bubble core sleeves.

Description

technical field

[0001] The invention relates to a production method of a level bulb. Background technique

[0002] The vial is widely used in various measuring tools as a component to detect the level or not. For this reason, many technicians have made technical improvements to the vial. The traditional level blister is produced in this way. First, transparent plastic such as plexiglass is injection molded into a blister blank. See figure 1 , and then turn a plurality of concave annular grooves on the surface of the cavity of the blister blank, and the annular grooves are distributed on the left and right sides, see figure 2 , and then the steel wire is embedded in the annular groove as a scribe line, and a level bulb is made. The defect is that the process is complicated, the processing is difficult, the efficiency is low, and the accuracy is poor, which directly affects the accuracy of the measuring tool, especially The surface of the cavity waist hole in the blister bl...

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