Disclosed is a self-adaptive pencil feeding mechanism, including: a base, a first pencil feeding assembly, and a second pencil feeding assembly. The first pencil feeding assembly and the second pencil feeding assembly are mounted in the base and are capable of moving to the left or to the right, and the base is connected to a guiding member via an elastic member. The guiding member drives the first pencil feeding assembly and the second pencil feeding assembly to synchronously approach each other inwardly, and the first pencil feeding assembly and the second pencil feeding assembly, when a force caused by insertion of a pencil is applied thereto, are driven by a driving member to synchronously expand outwardly. The self-adaptive pencil feeding mechanism is capable of adapting to pencils of different diameters.

Disclosed is a self-adaptive pencil feeding mechanism, including: a base, a first pencil feeding assembly, and a second pencil feeding assembly. The first pencil feeding assembly and the second pencil feeding assembly are mounted in the base and are capable of moving to the left or to the right, and the base is connected to a guiding member via an elastic member. The guiding member drives the first pencil feeding assembly and the second pencil feeding assembly to synchronously approach each other inwardly, and the first pencil feeding assembly and the second pencil feeding assembly, when a force caused by insertion of a pencil is applied thereto, are driven by a driving member to synchronously expand outwardly. The self-adaptive pencil feeding mechanism is capable of adapting to pencils of different diameters.

An electric pencil sharpener includes a power device. The power device is connected to two rotatable rubber wheels by a transmission mechanism. The two rubber wheels are located on two sides of the pencil to be sharpened, are rotated in opposite directions and closely fit a side wall of the pencil to be sharpened, to push upwards or downwards the pencil to be sharpened to move. A gap between the two rubber wheels is adjustable. The electric pencil sharpener further includes a rotatable cutter carrier assembly located below the rubber wheels configured to sharpen the pencil to be sharpened. The electric pencil sharpener can sharpen the pencil of different diameters, and has a sharpening process requiring no human participation, has a wide application and saves manual operation.

An electric pencil sharpener includes a power device. The power device is connected to two rotatable rubber wheels by a transmission mechanism. The two rubber wheels are located on two sides of the pencil to be sharpened, are rotated in opposite directions and closely fit a side wall of the pencil to be sharpened, to push upwards or downwards the pencil to be sharpened to move. A gap between the two rubber wheels is adjustable. The electric pencil sharpener further includes a rotatable cutter carrier assembly located below the rubber wheels configured to sharpen the pencil to be sharpened. The electric pencil sharpener can sharpen the pencil of different diameters, and has a sharpening process requiring no human participation, has a wide application and saves manual operation.

A pencil feeding mechanism and a pencil sharpener provided with the pencil feeding mechanism are provided. The pencil feeding mechanism includes a driving apparatus and a pencil clamping apparatus, where the driving apparatus is connected to the pencil clamping apparatus, and the driving apparatus is capable of driving the pencil clamping apparatus to work. The pencil clamping apparatus includes a support, three pencil clamping roller assemblies are disposed on the support, and a triangular pencil clamping region capable of being inserted by a pencil is formed among the three pencil clamping roller assemblies. One end of each of the pencil clamping roller assemblies is rotatably connected to the support, and the other end of the each of the pencil clamping roller assemblies is slidably connected to the support. A clamping assembly is disposed between a movable end of the each pencil clamping roller assembly and the support.

A pencil clamping mechanism for a pencil sharpener includes a support, at least two pencil clamping roller assemblies are disposed on the support, and a pencil clamping area for a pencil to be inserted in is formed between the pencil clamping roller assemblies; one end of the pencil clamping roller assembly is rotatably connected on the support, and the other end of the pencil clamping roller assembly is connected on the support in a sliding mode; a ball head is disposed at one end of the pencil clamping roller assembly, an embedding groove matched with the ball head is disposed on the support, and the ball head is rotatably connected in the embedding groove.