A One-way Driving Mechanism with Stepless Adjustment of Stroke

Abstract

The invention is a one-way driving mechanism for steplessly adjusting stroke. It includes a lever mechanism with an adjustable fulcrum position and a one-way drive mechanism. The lever mechanism with an adjustable fulcrum position includes a driving part, a lever, etc.; the one-way drive mechanism includes a first one-way clutch mechanism, a second one-way clutch mechanism, etc. , the lever is installed on the adjustable fulcrum, the active end of the lever is hinged on one end of the lever, the driven end of the lever is hinged on the eccentric shaft of the one-way drive seat and cooperates with the lever on the other end of the lever, the active The end driving part is installed on the hinge at the active end of the lever. The first one-way clutch mechanism is coaxially connected with the one-way rotating shaft. The one-way roller and the one-way wheel are respectively connected coaxially with the one-way rotating shaft. The first one-way The one-way clutch mechanism and the second one-way clutch mechanism are installed on the one-way rotating shaft. The invention is widely used in converting the active end movement with a fixed stroke into the one-way driven end movement whose stroke can be adjusted steplessly. The transmission ratio is accurate, the transmission efficiency is high, and the impact and noise are low.

Description

technical field [0001] The invention is a one-way driving mechanism with stepless stroke adjustment, which belongs to the reciprocating motion in mechanical transmission in which the stroke is fixed at the driving end and the one-way running mechanism with the stroke adjustable at the driven end. It can be widely used in printing equipment, printing equipment, packaging equipment, stamping / punching equipment and other fields, and belongs to the innovative technology of the one-way driving mechanism with stepless stroke adjustment. Background technique [0002] In various ribbon printers, since the printed area of ​​the ribbon cannot be printed again after printing, the ribbon needs to be driven to the next unprinted position in the next printing. The ribbon is the most important consumable on the ribbon printer. Cost is the most important component of printing cost. Due to the different printing areas in different applications, the ribbon driving steps required for differen...

AI Technical Summary

Problems solved by technology

[0006] But this mechanism has a serious defect, that is, after the center of rotation of the intermediate size changes (not at the center of its indexing circle), it is no longer tangent to the pitch circle (pitch line) of the rack and the execution gear, resulting in a gap between the pitch circles. Interference or distance between them, the meshing between them is no longer conjugate meshing, the teeth will interfere with each other during the meshing process or the meshing gap is too large or even disengaged, which violates the mechanical principle

Therefore, this mechanism is very easy to cause damage to the mechanical parts (rack, intermediate gear, and execution gear), and the driving accuracy is very poor (the ribbon step error exceeds ±3mm), resulting in a very low utilization rate of the ribbon

Especially at high speed (reciprocating frequency exceeds 400 times / minute), the driving accuracy, that is, the noise deteriorates sharply, and the damage of the parts is also very rapid (according to different parts materials, the service life of the parts is only about 400 hours to 600 hours or even lower)

Images