Automatic cosmetic bottle capping device by means of pneumatic absorption

An automatic cosmetic bottle capping device by means of pneumatic absorption, comprising a first conveyor belt (1), a second conveyor belt (2) and a third conveyor belt (3), wherein a sliding convex (11) is provided at a surface of an inner round of the first conveyor belt (1), a capper (12) is movably sleeved on a conveyor belt of the first conveyor belt (1), a suction tip (121) is provided in a central portion of the capper (12), rolling balls (122) are fixedly connected in the capper (12), a through-hole (123) is provided in an outer surface of the capper (12), a capping claw (124) is fixedly connected to a lower end of the capper (12), a positioning plate (125) is fixedly provided on an upper end of the capper (12), springs (126) are provided to a lower end of the positioning plate (125), a hole plug (13) is provided movably outside the through-hole (123), a cap (21) is placed on a front end of the second conveyor belt (2), a cosmetic bottle (31) is placed on a front end of the third conveyor belt (3), and a finished product (32) is provided on a rear end of the third conveyor belt;

• when looking down upon, the hole plug (13) is a three-quarter circle, and starts from a corner of the second conveyor belt (2) to a corner of the third conveyor belt (3);
• when viewing from a higher position, the first conveyor belt (1) rotates counter-clockwise, both the second conveyor belt (2) and the third conveyor belt (3) rotate from a lower left part to an upper right part, and all conveyor belts are energized by at least one external motor;
• a thickness of the hole plug (13) matches a diameter of the through-hole (123), and the hole plug (13) contacts tightly the through-hole (123) when coming into contact with the capper (12);
• the cap (21) and the cosmetic bottle (31) are conveyed respectively by the second conveyor belt (2) and the third conveyor belt (3) from the lower left part to the upper right part, assembled by the capper (12) to be the finished product (32) and conveyed outside from an upper end of the third conveyor belt (3);
• and when the capper (12) moves along with the first conveyor belt (1) to a position contacting the hole plug (13), the hole plug (13) will block air communication at the through-hole (123), the cap (21) is drawn at the corner of the second conveyor belt (2) and released at the corner of the third conveyor belt (3).