Waterproof structure for big bar threads of die casting machine

Abstract

A waterproof structure for big bar threads of a die casting machine comprises a fixed plate, a big bar penetrating through the fixed plate, a big bar nut in threaded connection with the end of the big bar and a pressing plate used for tightly pressing the big bar nut. The waterproof structure is characterized in that a groove is formed in the outer lateral side of the big bar nut; a matched boss is correspondingly arranged on the lateral side, matched with the big bar nut, of the pressing plate; and the boss is arranged in the groove in a matched manner. The depth of the groove is larger than the height of the matched boss, and the matched boss is wholly arranged in the groove; the matched boss is arranged in a step manner; and a hollowed transition portion is formed between the matched boss and a non-matched face, and the matched boss is higher than the hollowed transition portion. The matched boss can effectively prevent water from entering the threaded matched face between the big bar and the big bar nut from the pressing plate. Due to the fact that the threaded matched face between the big bar and the big bar nut is effectively protected, the maintenance cost caused by corrosion due to water invasion is avoided. Furthermore, the fateful damage caused by the big bar is avoided, and the service life of the big bar is prolonged.

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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