A paper feeding method with self-adaptive starting point

Abstract

The invention discloses a paper feeding method of an adaptive starting point, which comprises the following steps: S1. Designing a mechanical cam C 1 and C 2 , C 1 Used to control the up and down movement of the front end of the lifting platform; C 2 Used to control the up and down movement of the end of the lifting platform; design the paper feeding wheel M 3 The electronic cam curve, the feed roller M 3 The cycle runs in the following four basic motion sections in sequence: zero speed section, acceleration section, constant speed section, and deceleration section; S3. Design the lifter cam C 1 、C 2 Electronic cam curve, the cardboard is always in contact with the paper feed wheel in the paper feeding area, and will not touch the second cardboard, and precisely control the lifting board C 1 、C 2 action to match the feed roller M 3 The operation; S4. Select the plate lifting cam C 1 、C 2 The zero position of the curve is at the K position at a certain angle from the starting point of descent; when feeding the paper, C2 starts to rise after the C1 rises to a high level, and it is necessary to achieve θ 4 =γ 3 +γ 4 .

Description

technical field [0001] The invention relates to the technical field of carton printing machinery, in particular to a paper feeding method with an adaptive starting point. Background technique [0002] The servo leading edge feeding of the carton printing machine is through the precise movement of the feeding wheel and grid plate controlled by the servo drive and the appropriate size of the vacuum suction cardboard fixing system to ensure that the cardboard is fed into the machine. [0003] In the traditional paper feeding method, in order to ensure synchronization with subsequent processes (printing, die-cutting, slotting, etc.), the start points of the paper feed wheels for different cardboards are fixed. The height of the mechanical cam for lifting the plate is fixed, which is equivalent to fixing the paper feeding angle α and non-paper feeding angle β of the lifting cam and the paper feeding wheel; the paper feeding angle α is used to convey the length L of the cardboard ...

AI Technical Summary

Problems solved by technology

The above analysis shows that: D and α are fixed values, which limit Otherwise, the acceleration of the cam servo motor will be increased, which will affect the stability of the machine and the accuracy of paper feeding. If the acceleration is too large, it may cause abnormal noise of the mechanical structure and affect the service life.

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