A lifting mechanism for paper feeding suction box used in non-destructive printing

Abstract

This utility model discloses a lifting mechanism for a non-destructive paper feeding suction box in top-printing presses. It includes a suction box and a non-destructive paper conveying mechanism or a leading-edge paper feeding mechanism. The suction box is mounted on the machine body wall panel of the paper inlet section via two swing brackets. The inlet side of the suction box is hinged to the non-destructive paper conveying mechanism or the leading-edge paper feeding mechanism, and the outlet side of the suction box is height-adjustable via a suction box lifting mechanism. This utility model can eliminate the problems of low paper feeding accuracy, registration accuracy, and print quality fluctuations in top-printing presses. Furthermore, the height of the suction box can be adjusted according to different thicknesses of paperboard to meet the requirements of the top-printing plate roller, ensuring accurate paperboard delivery to the working position. Experiments have shown that the paper feeding error of this utility model is less than 0.2 mm, resulting in improved print quality. This completely solves the problems of low paper feeding accuracy, registration accuracy, and print quality fluctuations caused by the fixed plate roller in top-printing presses.

Description

Technical Field

[0001] This utility model relates to a corrugated cardboard conveying mechanism, and in particular to a non-destructive paper feeding suction box lifting mechanism used in an on-screen printing press. Background Technology

[0002] Over the past decade or so, corrugated box machinery has evolved from simple manual and semi-automatic machines to fully automatic vacuum suction leading edge feeding and non-destructive feeding machines. Most carton factories in China purchase top-printing machines, but top-printing non-destructive printing machines still suffer from low feeding accuracy and fluctuating printing quality due to inconsistent cardboard thickness specifications. Utility Model Content

[0003] The purpose of this utility model is to provide a lifting mechanism for a non-destructive paper feeding suction box, which works in conjunction with a non-destructive paper conveying mechanism (Chinese Patent No. CN200620041413.5) and a suction box (both front edge feeding and non-destructive feeding can be used) to solve the problems of low paper feeding accuracy and printing quality fluctuations in corrugated cardboard.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A lifting mechanism for a paper feeding suction box used in non-destructive printing includes a suction box and a non-destructive paper conveying mechanism or a leading edge paper feeding mechanism. The suction box is mounted on the wall panel of the paper feeding section via two tabletop swing brackets. The inlet plate side of the suction box is hinged to the non-destructive paper conveying mechanism or the leading edge paper feeding mechanism. The characteristic feature is that the outlet plate side of the suction box is height-adjustable via a suction box lifting mechanism.

[0006] In a preferred embodiment of the present invention, the suction box lifting mechanism includes a gap adjustment deceleration mechanism, an adjusting shaft disposed below the outlet side of the suction box, and a pair of cams fixedly mounted on the adjusting shaft and located below the outlet side of the suction box. The cams rotate with the adjusting shaft and contact the bottom of the outlet side of the suction box. The rotation of the cams adjusts the height of the outlet side of the suction box according to the thickness of the cardboard.

[0007] In a preferred embodiment of this utility model, the suction box includes a vacuum box, a main motor mounted on the wall panel of the paper feed section, a main drive gear mounted on the output shaft of the main motor, and multiple synchronous pulleys mounted on the end wall of the vacuum box, and a synchronous belt surrounding the multiple synchronous pulleys. One of the synchronous pulleys is drivenly connected to the main drive gear. A synchronous belt shaft is provided on each synchronous pulley, and a conveyor roller is axially spaced on each synchronous belt shaft.

[0008] In a preferred embodiment of the present invention, the core of each conveyor roller is made of wear-resistant aluminum alloy, and the outer surface layer of each conveyor roller is coated with high wear-resistant ceramic.

[0009] In a preferred embodiment of this utility model, each synchronous belt shaft is mounted on the end walls at both ends of the vacuum chamber via bearing shafts.

[0010] This invention can be connected to a non-destructive paper feeding mechanism, as well as various leading-edge paper feeding mechanisms. Regardless of the connection, it can eliminate the problems of low paper feeding accuracy, registration accuracy, and print quality fluctuations in top-mount printing presses. Furthermore, the height of the suction box can be adjusted according to the different thicknesses of the cardboard to meet the requirements of the top-mount printing rollers, ensuring accurate delivery of the cardboard to the working position. Experiments have shown that the paper feeding error of this invention is less than 0.2 mm, resulting in improved print quality. This completely solves the problems of low paper feeding accuracy and print quality fluctuations caused by inconsistent cardboard thickness in top-mount printing presses. Attached Figure Description

[0011] Figure 1 This is one of the perspective views of the paper feeding suction box lifting mechanism in the top-printing type printing press of this utility model.

[0012] Figure 2 This is the second perspective view of the paper feeding suction box lifting mechanism for the application of this utility model in an on-screen printing press. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] See Figure 1 and Figure 2 The figure shows an application of a non-destructive paper feeding suction box lifting mechanism in printing, including a suction box 100 and a non-destructive paper conveying mechanism 200 or a leading edge paper feeding mechanism. The non-destructive paper conveying mechanism is the "corrugated strength non-destructive paper conveying mechanism of an automatic paper feeding unit" disclosed in Chinese Patent No. CN200620041413.5, and the leading edge paper feeding mechanism is the "leading edge paper feeding mechanism" mentioned in the "full servo water-based printing backlash-free transmission mechanism" disclosed in Chinese Utility Model Authorization Publication No. CN201067986Y.

[0015] The suction box 100 is installed on the paper feed section wall panel 300 via two tabletop swing brackets 210 and 220. The feed plate side of the suction box 100 is hinged to the non-destructive paper conveying mechanism 200 or the leading edge paper feeding mechanism.

[0016] The feature of this utility model is that the height of the exhaust plate side of the suction box 100 is adjusted by a suction box lifting mechanism 400, specifically:

[0017] The suction box lifting mechanism 400 includes a gap adjustment reduction mechanism 410, an adjustment shaft 420 located below the outlet side of the suction box 100, and a pair of cams 430 and 440 fixedly installed on the adjustment shaft 200 and located below the outlet side of the suction box 100. When it is necessary to adjust the height of the outlet side of the suction box 100, the gap adjustment reduction mechanism 410 drives the adjustment shaft 420 to rotate, and the pair of cams 430 and 440 follow the adjustment shaft 420 to rotate and contact the bottom of the outlet side of the suction box 100. The height of the outlet side of the suction box 100 is adjusted by the rotation of the pair of cams 430 and 440.

[0018] The suction box 100 includes a vacuum box 110, a main motor (not shown) mounted on the paper feed section body wall panel 300, a main drive gear 120 mounted on the output shaft of the main motor, and multiple synchronous pulleys 130 mounted on the end wall of the vacuum box 110, and a synchronous belt 140 surrounding the multiple synchronous pulleys 130. One of the synchronous pulleys 130 is drivenly connected to the main drive gear. A synchronous belt shaft 150 is provided on each synchronous pulley 130, and a conveyor roller 160 is axially spaced on each synchronous belt shaft 150.

[0019] The core of each conveyor roller 160 is made of wear-resistant aluminum alloy, and the outer surface of each conveyor roller is coated with highly wear-resistant ceramic. Each synchronous belt shaft 150 is mounted on the end walls at both ends of the vacuum chamber via bearings.

Claims

1. A lifting mechanism for a paper feeding suction box in a non-destructive printing process, comprising a suction box and a non-destructive paper conveying mechanism or a leading edge paper feeding mechanism, wherein the suction box is mounted on the wall panel of the paper infeed section via two platform swing brackets, and the infeed plate side of the suction box is hinged to the non-destructive paper conveying mechanism or the leading edge paper feeding mechanism, characterized in that, The height of the exhaust plate side of the suction box is adjusted by a suction box lifting mechanism.

2. The lifting mechanism for a paper feeding suction box in a non-destructive printing application according to claim 1, characterized in that, The suction box lifting mechanism includes a gap adjustment deceleration mechanism, an adjustment shaft disposed below the outlet side of the suction box, and a pair of cams fixedly mounted on the adjustment shaft and located below the outlet side of the suction box. The cams rotate with the adjustment shaft and contact the bottom of the outlet side of the suction box. The rotation of the cams adjusts the height of the outlet side of the suction box.

3. A lifting mechanism for a paper feeding suction box in a non-destructive printing application according to claim 1 or 2, characterized in that, The suction box includes a vacuum box, a main motor mounted on the wall panel of the paper feed section, a main drive gear mounted on the output shaft of the main motor, and multiple synchronous pulleys mounted on the end wall of the vacuum box, and a synchronous belt wrapped around the multiple synchronous pulleys. One of the synchronous pulleys is driven and connected to the main drive gear. A synchronous belt shaft is provided on each synchronous pulley, and a conveyor roller is axially spaced on each synchronous belt shaft.

4. The lifting mechanism for a paper feeding suction box in a non-destructive printing application according to claim 3, characterized in that, The core of each conveyor roller is made of wear-resistant aluminum alloy, and the outer surface of each conveyor roller is coated with highly wear-resistant ceramic.

5. The lifting mechanism for a paper feeding suction box in a non-destructive printing application according to claim 2, characterized in that, Each synchronous belt shaft is mounted on the end walls at both ends of the vacuum chamber via bearing shafts.

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