Printing and slotting machine with all-servo paper feed system in paper feed part

Abstract

The invention relates to a printing and slotting machine with an all-servo paper feed system in a paper feed part, which comprises a front edge paper feed unit and a paper feed unit, wherein the front edge paper feed unit comprises three servo motors which respectively and independently control a paper feed idler wheel group to rotate and a vacuum adsorbing box which is configured under the idlerwheel group; the paper feed unit comprises a servo motor which controls a paper feed upper roller to run and a vacuum adsorbing box which is configured on the roller; all the servo motors are connected with a coder by leads; the coder obtains the linear velocity information of a paper feed lower roller which is connected with a main drive system in a meshing drive way by a coder gear which is connected with a drive gear in the meshing drive way and feeds back the linear velocity information to the respectively independent servo motors; the servo motors adjust respective rotating speed according to the linear velocity information so that the linear velocity of a respective idler wheel and the paper feed upper roller is always synchronous and consistent with the linear velocity of the paperfeed lower roller; and the two vacuum adsorbing boxes are in charge of the adsorption function of paperboards of the two paper feed units. The invention solves various problems existing when the printing and slotting machine feeds paper at high speed.

Description

technical field [0001] The invention relates to a packaging machine, in particular to a printing slotting machine with a full servo paper feeding system in the paper feeding part. Background technique [0002] Printing slotting machine is a widely used packaging machinery, its main structure is as follows figure 1 As shown, it includes leading edge paper feeding unit 11, paper feeding unit 12, multiple printing units 13, slotting unit 14 and die-cutting unit 15, each unit works in a unified and coordinated manner under the action of power equipment and transmission mechanism, and jointly completes Feeding, printing, slotting and die-cutting of cardboard. The paper feeding part consisting of the leading edge paper feeding unit and the paper feeding unit is equipped with a full servo paper feeding system, which uses four independent servo motors to drive three sets of paper feeding rollers and a paper feeding bottom roller respectively; And two sets of vacuum adsorption boxe...

AI Technical Summary

Problems solved by technology

[0003] With the advancement of technology, the productivity of printing, slotting and die-cutting of the printing slotting machine is getting higher and higher, and it is now developing at a speed of 60 sheets per minute to 250 sheets per minute. This increase in productivity is bound to bring The frequency of paper feeding is required to be accelerated, and the accuracy of paper feeding is higher, reaching less than 0.5mm per sheet, and the quality requirements for paper are also very high. It is required that the warpage of the cardboard should be less than 20mm. Paper jams are prone to occur when the carton is formed, which affects the quality of carton forming and also reduces the production speed

In order to speed up the paper feeding, it is necessary to reduce the gap between the upper and lower rollers of the paper feeding, and increase the rolling pressure of the paper; in this way, the compressive capacity of the cardboard box is greatly reduced, and the jamming phenomenon is also increased. In addition, there are too many gear pairs, resulting in the unequal linear speed between the roller and the roller, and between the roller and the roller. The paper on the cardboard and the pull-down paper are inconsistent, and the cardboard is broken.

In the long run, it will seriously affect the production of cardboard boxes

Therefore, it is necessary to meet the needs of high-speed development without affecting the increase of production speed and the compression resistance of the cardboard box. The existing methods and technologies are no longer suitable for the requirements of the market, and users have expressed strong feedback.

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