Ordinary pencil sharpener generally consists of three parts: blade, scabbard and waste box.
Pencil Sharpener was patented by Eric Gauss and Daniel LaCamille of France on 1906.
Pencil sharpeners are divided into (ordinary pencil sharpeners) and (electric pencil sharpeners).
Ordinary pencil sharpener generally consists of three parts: blade, scabbard and waste box.
The blade is fixed on the scabbard with screws. The scabbard is mostly rectangular plastic with holes to support the blade.
The scabbard is fixed in the waste box, which can be round, square and various forms. It also needs the same hole as the scabbard for the pencil to enter.
Most garbage bins are designed to be detachable to facilitate the removal of garbage.
An electric pencil sharpener aims at solving the problems of automatically sharpening pencils and storing pencil foam.
It is mainly composed of an upper pencil box, a cutter, a push rod, a supporting partition, a tool rest, a pressure plate, a pressure sensor, a transmission gear, a motor and a lower box. Characterized in that the middle part of the upper pencil case is fixedly installed on the whole supporting clapboard, and the middle part of the supporting clapboard is provided with corresponding holes for the push rod and the cutter to pass through; The cutter is connected with the transmission gear through the tool rest; The transmission gear is connected with the motor through a transmission shaft; The front end of the push rod is nested in the cutter; The rear end of the push rod is fixedly connected with the front side of the pressure plate; The back end of the pressure plate is connected with a pressure sensor; The pressure sensor is connected with the power supply through wires, and is closed in series with the power supply, switch and motor.