Neutral pen core capable of being repeatedly filled with ink
A gel pen, repeating technology, applied in ballpoint pens, printing, writing utensils, etc., can solve the problem of refilling ink, etc., and achieve the effects of low production cost, simple structure and good sealing performance
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[0011] Such as figure 1 , figure 2 As shown, the present invention is realized in this way, the refill container 1 is coaxially connected to the refill head 2, the top of the refill head 2 is provided with an annular boss 3, and the two sides of the bottom end of the annular boss 3 are respectively corresponding to the sealed connection head 4 and the fixed column head 5, the middle of the cover head 4 has an ink inlet, the ink injection tube 6 is connected between the cover head 4 and the fixed column head 5, the end of the ink injection tube 6 that is close to the same fixed column head 5 is connected to the end of the spring 7, and the spring The other end of 7 is connected to the gasket 8, the outer surface of the gasket 8 is connected with a sealing column head 9, the sealing column head 9 cooperates with the sealing ink inlet 12, the tube wall of the ink filling tube 6 has an ink outlet 10, and there are several openings around the gasket 8 There are two through holes,...
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