Key cap painting tool

A spray painting tool for painting key caps, comprising:

• a platform, comprising:
• a plurality of elastic members disposed inside of the platform;
• an interlocking element disposed on the plurality of elastic members for enabling the interlocking element to resiliently reciprocate between a press position and a release position;
• and
• a button connected to the interlocking element;
• a plurality of protruding columns mounted on the interlocking element for elevating key caps;
• a panel, disposed on the platform and having a plurality of holes formed thereon at positions corresponding to the plurality of protruding columns for allowing the plurality of protruding columns to pass through the panel therefrom;
• a diaphragm, disposed on the panel while aligning a plurality of holes formed thereon with the plurality of protruding columns for allowing the plurality of protruding columns to pass through the diaphragm therefrom;
• and
• at least a holding unit, being arranged on the panel at a position corresponding to the plurality of protruding columns for fixedly securing the key caps,
• wherein the plurality of protruding columns are mounted on the interlocking element in a manner that all of the plurality of protruding columns are driven to descend in synchronization with the descending of the interlocking element so that when the button is pressed and the interlocking element descends to the press position, all of the plurality of protruding columns are driven to descend in synchronization to be not above the top surface of the platform, and when the button is released and the interlocking element bounces back to the release position by the elastic member, the plural protruding columns are raised to protrude out of the platform.