Etching device of decorative plate for elevator

The invention discloses an etching device of a decorative plate for an elevator. The etching device of the decorative plate for the elevator comprises a shell and a liquid-injecting opening, an inserting rod is arranged on the inner wall of a through pipe, the inserting rod penetrates through the through pipe and a nib, an ejecting rod is arranged on the inner wall of the lower end of the inserting rod, and the ejecting rod penetrates through the inserting rod to be fixedly connected with the shell. A pull ring is arranged at the left end of the ejecting rod, a spring is arranged on the outerwall of the ejecting rod, a supporting plate is arranged at the left end of the spring, and the lower end of the supporting plate is fixedly connected with the shell. According to the etching device of the decorative plate for the elevator, the shell is matched with a rubber plug, the rubber plug is matched with a push rod, wettability of the nib is ensured, the nib is matched with the through pipe and the inserting rod,