Erosion treatment of acid or alkali of PVC vacuum coating machine

After the equipment is degreasing, it can be treated with acid or alkaline etching to remove oxides on the metal surface. After the heat treatment, the equipment parts are no longer oily, and can be directly treated with acid/alkali etching to remove the oxide layer pollution left after vacuum annealing.

Technical features:

　　 1. A vacuum chamber for a vacuum coating machine, characterized in that it comprises:

　　Vacuum chamber;

　　 wavy shield, which can be detachably connected to the inner wall of the vacuum chamber;

　　 main drive roller, which is arranged in the center of the lower part of the vacuum chamber; the unwinding roller and the winding roller are symmetrically arranged on the upper part of the vacuum chamber;

　　Three coating targets are placed equidistantly around the outer circle of the main driving roller and below the main driving roller.

　　2. The vacuum chamber for a vacuum coating machine according to claim 1, wherein the laying surface of the wave-shaped shielding plate on the inner wall of the vacuum chamber matches the inner wall of the vacuum chamber.

　　3. The vacuum chamber for a vacuum coating machine according to claim 1, wherein the detachable connection between the wave-shaped shielding plate and the inner wall of the vacuum chamber is a bolt connection.

4. The vacuum chamber for a vacuum coating machine according to claim 1, wherein the detachable connection between the wave-shaped shielding plate and the inner wall of the vacuum chamber is: at the end of the wave-shaped shielding plate The inner wall of the vacuum chamber is provided with a bent portion, and a slot matching the bent portion is provided on the inner wall of the vacuum chamber. The slot and the bent portion are matched and connected to realize the wave-shaped shielding plate and the inner wall of the vacuum chamber The detachable connection.

　　5. The vacuum chamber for a vacuum coating machine according to claim 1, wherein the vacuum chamber is provided with an exhaust hole for connecting a vacuum exhaust unit and an inflation hole for connecting an inflation system.

6. The vacuum chamber for a vacuum coating machine according to claim 1, further comprising guide rollers, which are arranged in the vacuum chamber, and the guide rollers are respectively located between the main driving roller and the unwinding roller. Between the driving roller and the winding roller.

　　Technical Summary

The utility model discloses a vacuum chamber for a vacuum coating machine, comprising: a vacuum chamber; a wave-shaped shielding baffle, which is detachably connected to the inner wall of the vacuum chamber; and a main drive roller, which is arranged in the vacuum chamber The lower part is in the middle position; the unwinding roller and the winding roller are symmetrically arranged on the upper part of the vacuum chamber; three coating targets are placed equidistantly around the outer circle of the main driving roller, and located below the main driving roller The utility model sets the shielding baffle inside the vacuum chamber as a wave-shaped shielding baffle, which effectively increases the overall area of the baffle, so that the baffle can better and more adsorb target materials, reduce maintenance times, and increase Effective production time of equipment.