A traction roller fixed-length conveying indexing mechanism

Abstract

The invention discloses a fixed length transfer indexing mechanism for a traction roller. The fixed length transfer indexing mechanism comprises a grab handle, an involute cam, a notch wheel and a limiting pin. The radius of an involute starting point of the involute cam is the smallest and the radius of the end point is the greatest, the starting point is connected to one end of a U-shaped groovewhile the other end of the U-shaped groove is connected to one end of a straight section, and the other end of the straight section is connected to the end point; the notch wheel and the involute camare coaxially attached and move independently, the radius of the notch wheel is equal to the smallest radius of the involute cam, and a groove is formed in the circumference of the notch wheel; one end of the grab handle is bended, the bending point is hinged and fixed, and the tail end of the bended part is hinged to the notch wheel; the grab handle is pressed to drive the notch wheel to rotate,and the grab handle is lifted up to drive the notch wheel to return, and the involute cam rotates one revolution; the limiting pin can be placed in the U-shaped groove, the limiting pin is connectedto a return spring, and the return spring applies a force facing the direction of the involute cam all the way; and the involute cam is connected to the traction roller through a gear mechanism. The fixed length transfer indexing mechanism achieves zero error of transmission and controls the single movement angle precisely.

Description

technical field [0001] The invention belongs to the field of fruit bagging, and relates to a traction roller fixed-length transmission indexing mechanism. Background technique [0002] In the bagging device, the pressing and lifting of the handle control the traction roller to convey the bag, and each time a bag is conveyed, the traction roller moves forward the length of one bag. If there will be a small amount of error due to the difference in inertia each time, it will accumulate after multiple transmissions, making the bag unable to meet the positioning requirements. For this reason, an indexing mechanism is needed to control the rotation angle of the traction roller, so that the length of a bag can be accurately conveyed each time. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a traction roller fixed-length transmission indexing mechanism, which realizes zero error...

AI Technical Summary

Problems solved by technology

If there will be a small amount of error due to the difference in inertia each time, it will accumulate after multiple transmissions, making the bag unable to meet the positioning requirements

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