Multifunctional noodle pressing machine

A multifunctional noodle pressing machine, comprising a main housing and an upper cover, wherein a first pressing roller is rotatably connected within the main housing, a second pressing roller is disposed within the main housing, the first pressing roller and the second pressing roller are spaced apart front and rear, the first pressing roller and the second pressing roller jointly thin conveyed dough sheets, the upper cover is detachably mounted atop the main housing, the upper cover covers the first pressing roller and the second pressing roller, a knob is rotatably connected to an outer sidewall of the main housing, the knob is connected to a connection shaft, the connection shaft is eccentrically connected to the second pressing roller, with an axis of the connection shaft deviating from an axis of the second pressing roller, whereby rotating the knob adjusts a distance between the first pressing roller and the second pressing roller;

• wherein a positioning ring is disposed on the outer sidewall of the main housing, the positioning ring is formed with a plurality of positioning holes, the plurality of positioning holes are arranged annularly at intervals, the knob is provided with a first pin, and the first pin inserts into the positioning holes to restrict rotation of the knob;
• wherein each of the plurality of positioning holes is provided with a guide bevel for guiding the first pin to disengage from the corresponding positioning hole, each guide bevel is provided only on one side within the corresponding positioning hole and the first pin is able to disengage from the corresponding positioning hole only via the guide bevel, so as to restrict the knob to unidirectional rotation only.