Sometimes when the mold nitrogen spring is filled with good gas, bubbles appear in the bubble measurement at the gap between the dust inside the middle sleeve and the rod, indicating obvious gas leakage; Some run out of air after just one night; Some have no gas problems after a few days of use; There are also some problems such as no gas after a period of use.

If there is such a leakage problem, disassemble the product accessories and check whether the following problems occur in the middle guide ring.

1. Whether the guide ring is deformed and the opening is large or the extrusion is too tight;

2. Whether the guide ring is damaged or scratched;

3. Whether the guide ring is foreign;

Provide personal ideas on how to improve the following three leakage problems:

1. Whether the guide ring is deformed and the opening is large or the extrusion is too tight; It is due to the processing tolerance of the guide ring or the inner groove of the middle sleeve that is too tight will crush the U-ring, and the opening is too large to squeeze the U-ring into the opening of the guide ring, thus causing the U-ring to deform and leak. Improvement: Within the control variable range of the machining guide ring, the inner groove parameters are installed with the guide ring.

2, the guide ring is damaged or scratched: due to the design of the groove in the sleeve; The roughness did not meet the requirements during processing; The guide ring is not installed in accordance with the specifications; The accuracy of the position of the guide ring in the middle set is not up to the standard; These reasons can cause the guide ring to be damaged or scratched; Fixing these defects will improve the problem.

3. Whether the guide ring is foreign; Because the installation did not clean up the middle sleeve, guide ring resulting in such problems, improve the method to standardize the operation process, strengthen the training of assembly personnel and quality control.