Plastic part tightening sucker

The invention discloses a plastic part tightening sucker. The sucker mainly includes a top part and a sucker body connected to the top part; a top part connection body is provided with a circular holewhich is connected to a cavity body arranged in the sucker body; and when the sucker body is in contact with a smooth surface body, air between the sucker body and the smooth surface body can be removed through the circular hole and the cavity body, so that the sucker can be tightly adsorbed on the smooth surface body. The sucker can realize advantages of being good in tightening function and convenient in operation, and is suitable for large suckers. 本发明公开了种塑料件加紧吸盘，主要包括：顶部、与顶部相连接的吸盘体；所述顶部连接体上设置圆形孔，并与所述吸盘体内设置的空腔体相连接；当吸盘体与光滑表面体接触后时，通过圆形孔与空腔体将吸盘体与光滑表面体之间的空气进行抽除，使吸盘紧紧吸附于光滑表面体。本发明的种塑料件加紧吸盘，可以实现紧固作用好、操作简便以及适用于大型吸盘的优点。