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Improved structure of pressure cylinder of flexographic printing machine and installation method of flexographic printing plate

A printing machine and flexo printing plate technology, which is applied to the improved structure of the pressure roller and the installation of the flexo printing plate, which can solve the problems of lack of graphics and text, skewed graphics, and increased production costs, so as to improve printing efficiency and fit. , the effect of improving the accuracy

Inactive Publication Date: 2019-03-08
云维健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pressure cylinder of the above-mentioned traditional flexographic printing machine still has the following deficiencies: (1) the printing plate is manually pasted on the surface of the pressure cylinder. Graphics and texts are transferred to the printed matter, resulting in skewed or missing graphics and texts; (2) Since the printing plate is attached to the surface of the cylinder body of the pressure cylinder in a pasted manner, the printing machine will contact the printing plate and the substrate after multiple printings The number of times is too many, causing the printing plate to loosen, causing the position of the printing plate to change or become skewed, causing the printed pattern and text to be skewed or the printed pattern and text to be missing, etc., which seriously affects the product quality. If the paper is defective and does not meet the requirements of use, it can only be scrapped, resulting in an increase in production costs; (3) The current printing plate also has a flexo printing plate composed of a resin layer or a rubber layer combined with a metal layer. Due to the addition of a metal layer on the flexo printing plate, its hardness is also increased accordingly, and the printing effect is also improved; if the flexo printing plate is pasted on the surface of the pressure roller in the above-mentioned traditional way, the flexo printing plate is easily separated from the pressure roller. Detachment or looseness will cause the graphics and text of the flexo printing plate to move and the substrate will be skewed or part of the graphics and text will be missing, which will seriously affect the product quality. Moreover, because the printed paper is defective and does not meet the requirements for use, it can only be scrapped. , leading to an increase in production costs

Method used

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  • Improved structure of pressure cylinder of flexographic printing machine and installation method of flexographic printing plate
  • Improved structure of pressure cylinder of flexographic printing machine and installation method of flexographic printing plate
  • Improved structure of pressure cylinder of flexographic printing machine and installation method of flexographic printing plate

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Experimental program
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Effect test

Embodiment 1

[0041] Embodiment 1, combining Figure 1 to Figure 8 As shown, an improved structure of the pressure cylinder of a flexographic printing machine includes a pressure cylinder 1. In this embodiment, the pressure cylinder 1 is a sleeve body, and the rotating shaft of the flexographic printing machine is inserted into the shaft hole 9 of the pressure cylinder 1. The rotating shaft drives the pressure cylinder 1 to rotate so that the pressure cylinder 1 is rotatably arranged on the flexographic printing machine, and the outer surface of the pressure cylinder 1 is provided with a gap 2 along its axial extension direction, and the two sides of the pressure cylinder 1 are close to The two ends of the gap 2 are respectively provided with grooves 3, the groove 3 communicates with the gap 2, and the bottom wall of the groove 6 is on the same level as one of the surfaces in the gap 2, and the outer end of the groove 3 extends out of the pressure. On the outer side corresponding to the dru...

Embodiment 2

[0044] Example 2, combined with Figure 9 to Figure 11 As shown, this embodiment is similar to the above-mentioned embodiment 1, and the difference is that the pressing cylinder of embodiment 2 is a plate roll 20, and the plate roll 20 is a solid structure, and both sides of the plate roll 20 are provided with support arms 8, The support arms 8 on both sides of the version roller 20 are inserted into the shaft holes of the flexographic printing machine, and the flexographic printing machine locks the support arms 8 on the version roller through the shaft holes, so that the version roller 20 is rotatably arranged on the flexographic printing machine .

[0045]The above-mentioned embodiment 1 and implementation 2 are the connection and rotation of the sleeve body and the flexographic printing machine, and the connection and rotation of the plate roller and the flexographic printing machine. Different types of flexo printing machines, even flexo printing machines with different ...

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Abstract

The invention relates to an improved pressing roller structure of a flexible plate printer and a flexible printing plate installing method of the improved pressing roller structure of the flexible plate printer. The improved pressing roller structure of the flexible plate printer comprises a pressing roller; the outer surface of the pressing roller is provided with a break joint in the axial extending direction of the outer surface of the pressing roller; and the positions, close to the two ends of the break joint, of the two sides of the pressing roller are each provided with a pressing mechanism. According to the improved pressing roller structure, by additionally arranging the break joint on the pressing roller, a flexible printing plate is arranged on the outer surface (the surface of a roller body) of the pressing roller in a surrounding manner, the edges of the flexible printing plate are plugged in the break joint, locking is performed through the pressing mechanisms, looseness of the flexible printing plate is avoided, the attaching degree between the flexible printing plate and the pressing roller is improved, the accuracy degree generated when the flexible printing plate is pasted on the outer surface (the surface of the roller body) of the pressing roller is improved, the locking degree of the flexible printing plate and the pressing roller is improved, and therefore the printing efficiency of the flexible plate printer is improved.

Description

technical field [0001] The invention relates to the technical field of flexographic printing machines, in particular to an improved structure of a pressure roller of a flexographic printing machine and a method for installing a flexographic printing plate. Background technique [0002] The flexographic printing machine uses fluid ink with strong fluidity. The ink is transferred to the graphic part of the printing plate by the ink fountain rubber roller and the anilox roller to make it inked, and then the printing pressure is applied by the pressure roller to press the printing plate The ink on the surface is transferred to the substrate, and finally the printing process is completed on the dry side. [0003] At present, the surface of the pressure cylinder of the flexographic printing machine is flat and smooth, so that the printing plate made of resin or rubber can be easily pasted on the body of the pressure cylinder. However, the pressure cylinder of the above-mentioned ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F5/24B41F13/18
CPCB41F5/24B41F13/18
Inventor 云维健
Owner 云维健