Waterproof structure of large bar thread of die-casting machine

Abstract

A waterproof structure for the screw thread of a die-casting machine, comprising a fixed plate, a large bar penetrating through the fixed plate, a large bar nut screwed to the end of the large bar, and a pressure plate for pressing the large bar nut; it is characterized in that: the outer surface of the large bar nut A groove is arranged on the top, and a matching boss is correspondingly arranged on the side of the pressure plate to match with it, and is matched and assembled in the groove. The depth of the groove is greater than the height of the mating boss, and the mating boss is integrally assembled in the groove; the mating boss is set in steps, and there is a hollow transition between it and the non-matching surface, and the mating boss is higher than the hollowed out Empty transition section. The matching boss provided by the present invention can effectively prevent water from entering the threaded mating surface of the big bar and the big bar nut from the side of the pressure plate, and the threaded mating surface of the big bar and the big bar nut is effectively protected to avoid corrosion caused by water intrusion. The cost of repair is the maintenance cost, and the fatal damage of the big bar is avoided, which prolongs the service life of the big bar.

Description

technical field [0001] The invention relates to a waterproof structure for a large bar thread of a die-casting machine. Background technique [0002] The large bar is the core part of the die-casting equipment to realize the production of die-casting products. It provides the clamping force required for the production of die-casting products through its own rigid deformation. Due to the importance of the large bar, the manufacturing cost of the large bar is determined to be high. However, at present, the die-casting equipment manufacturers have not designed the waterproof structure for the thread of the large bar. In addition, the water flow and high humidity environment caused by the spray in the production site of the die-casting products , Over time, the thread part of the big bar and the thread of the nut nut of the big bar will appear rusty and occluded between the threads of the two parts due to rust, which will cause fatal damage to the big bar, and finally lead to th...

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is necessary to develop a large-bar thread waterproof structure in view of the phenomenon that the large-bar thread is easy to rust and cause the large-bar to fail to use.

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