CN204687519U - A kind of Forme contacted ink roller of printing machine - Google Patents

Abstract

The utility model relates to a plate-supporting rubber roller of a printing machine. The two ends of the rubber roller rotating shaft of the plate-supporting rubber roller protrude from the rubber, and the two ends of the rubber roller rotating shaft are respectively provided with pads. Spaces are left between the rubber sheets. Compared with the prior art, since the backing piece is arranged on the rotation shaft of the rubber roller of the printing plate roller, in the working state, the backing piece and the shoulder iron of the printing plate cylinder are in contact with each other, and this structure can effectively avoid the When the plate rubber roller runs to the neutral position of the printing plate cylinder, the sudden change of the load will cause the ink bar and water bar to affect the printing quality and even reduce the service life of the device. The water or ink on the rubber will not spread to the cushion and drop to the shoulder iron, so as to avoid corrosion and bonding of the shoulder iron and prolong the service life of the device.

Description

A kind of printing machine's backing rubber roller

technical field

The utility model relates to the technical field of printing devices, in particular to a plate-relief rubber roller of a printing machine.

Background technique

The printing plate cylinder is the main part on the printing machine, on which the printing plate is installed, in the working cycle of each revolution. As shown in Figure 1, the printing plate is first in contact with the water application roller 2' of one of the forme rubber rollers, so that the blank part of the printing plate can obtain water without receiving ink, and then the printing plate is inked with the ink in the other forme rubber roller. Roller 1' contacts to make part of the graphic on the printing plate inked, and the graphic on the printing plate is transferred to the paper through the blanket on the rubber cylinder during the rolling process of the cylinder and the rubber roller to complete the printing process. In order to install the screen plate on the printing plate cylinder, the printing plate cylinder must be equipped with a neutral position to install the plate clamping device. Therefore, when the water application roller 2' and the ink form roller 1' (these two types of rollers are also called form rubber rollers, the same below) roll on the printing plate cylinder 3', since the two form rollers are pre-rolled to the printing plate The plate cylinder exerts a certain pressure so that the backing rubber roller and the printing plate on the plate cylinder are fully and forcefully contacted. Therefore, when the forme rubber roller runs to the neutral position of the printing plate cylinder, the load changes suddenly, and when the forme rubber roller runs to the neutral position of the printing plate cylinder, the load changes suddenly, and the forme rubber roller and the printing plate cylinder There is an impact between them, which will cause ink bars and water bars to affect the printing quality, and under the action of this alternating load for a long time, the rubber rollers, printing plates and printing plate cylinders are also easily damaged.

In order to prevent this situation, the Chinese utility model patent (authorized notification number CN2349009Y) discloses a printing press rubber roller, in which the ink form roller and water form roller are in contact with both ends of the plate cylinder and the main body at the same time . However, the plate roller of this structure is easy to make the ink or water droplets on the plate cylinder fall to the side wall of the plate cylinder and spread to the shoulder iron of the plate cylinder, thereby damaging the plate cylinder and the shoulder iron of the plate cylinder , reducing the service life of the device.

Therefore, in order to overcome or avoid the above-mentioned technical problems, it is urgent to provide a technology that can effectively avoid sudden load changes, reduce shocks, and prolong the service life of the printing device.

Utility model content

The purpose of the utility model is to avoid the deficiencies in the prior art and provide a printing press rubber roller which can effectively avoid load mutation, reduce impact and prolong the service life of the printing device.

The purpose of this utility model is achieved through the following technical solutions:

A rubber roller against a plate of a printing machine, comprising a rubber roller rotating shaft and a rubber cover, the rubber covering the rubber roller rotating shaft, the two ends of the rubber roller rotating shaft protrude from the rubber, and the two ends of the rubber roller rotating shaft are respectively provided with bearing pads There is a gap between the pad and the rubber.

Preferably, the length of the rubber is the same as the length of the printing plate cylinder, and when the supporting rubber roller and the printing plate cylinder are butted and rolled, the bearing member is butted and rolled with the shoulder iron of the printing plate cylinder.

Preferably, limiting pieces are respectively provided on both sides of the cushion member, and a limiting groove is formed between the two limiting pieces.

Preferably, the two ends of the rubber are respectively provided with blocking pieces.

The beneficial effects of the utility model:

The utility model relates to a plate-supporting rubber roller of a printing machine, the two ends of the rotating shaft of the rubber roller protrude from the rubber, and the two ends of the rotating shaft of the rubber roller are respectively provided with cushioning parts, and a There are gaps. Compared with the existing technology, since the backing piece is arranged on the roller rotation shaft of the plate roller, in the working state, the backing piece and the shoulder iron of the printing plate cylinder are in contact with each other, effectively avoiding the impact of the backing rubber When the roller runs to the neutral position of the printing plate cylinder, the sudden change of the load will cause the ink bar and water bar to affect the printing quality and reduce the service life of the device. At the same time, because there is a gap between the pad and the rubber, the The water or ink will not spread to the cushion and drop to the shoulder iron, so as to avoid corrosion and bonding of the shoulder iron and prolong the service life of the device.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the content in the accompanying drawing does not constitute any restriction to the utility model.

Figure 1 is a schematic diagram of printing in the prior art.

Fig. 2 is a structural schematic view of an embodiment of a printing press rubber roller of the utility model.

Fig. 3 is a structural schematic diagram of another embodiment of a plate-relief rubber roller of a printing machine according to the present invention.

Fig. 4 is a structural schematic diagram of another embodiment of a plate-relief rubber roller of a printing machine according to the present invention.

In Figure 1 are included:

1’——Inking roller, 2’——Water roller, 3’——Printing cylinder;

In Figures 2 to 4 include:

1——Plate cylinder, 2——Cotton roller, 21——Block,

3—shoulder iron, 4—cot roller shaft,

5——cushion, 51—limit plate, 52—limit groove.

Detailed ways

The utility model will be further described in conjunction with the following examples.

Example 1

As shown in Fig. 2, a kind of plate backing rubber roller 2 of a printing machine in this embodiment includes a rubber roller rotating shaft 4 and a rubber, the rubber wraps the rubber roller rotating shaft 4, and the two ends of the rubber roller rotating shaft 4 protrude from the rubber , and the two ends of the rubber roller rotating shaft 4 are respectively provided with pads 5, and the pads 5 leave a gap between the rubbers. Wherein, the length of the rubber is the same as that of the printing plate cylinder 1, and when the plate rubber roller 2 and the printing plate cylinder 1 are docked and rolled, the cushion member 5 is docked and rolled with the shoulder iron 3 of the printing plate cylinder 1.

In this embodiment, since the cushion member 5 is arranged on the rubber roller rotating shaft 4 of the plate rubber roller 2, in the working state, the cushion member 5 and the shoulder iron 3 of the printing plate cylinder 1 are in contact with each other. It can effectively avoid the problem that when the plate backing rubber roller 2 runs to the neutral position of the printing plate cylinder 1, the load changes suddenly, causing ink bars and water bars to affect the printing quality and reduce the service life of the device. At the same time, due to the pad There is a gap between 5 and the rubber, so that water, ink or other solutions on the rubber will not spread to the cushion 5 and drop to the shoulder iron 3, so as to avoid corrosion and bonding of the shoulder iron 3, and extend the device service life.

Example 2

As shown in FIG. 3 , the main technical solutions of this embodiment are basically the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. In this embodiment, limiting pieces 51 are respectively arranged on both sides of the cushion member 5 , and a limiting groove 52 is formed between the two limiting pieces 51 . The limiting groove 52 of this embodiment fits and engages with the shoulder iron 3 of the printing plate cylinder 1, effectively fixes the relative position of the cushion member 5 and the shoulder iron 3, and prevents the cushion member 5 from running off.

Example 3

As shown in Figure 4, the main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and are not described here. Let me repeat. In this embodiment, the two ends of the rubber are respectively provided with baffles 21 , and the baffles 21 are used to block water, ink or other solutions on the surface of the backing rubber roller 2 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should It is understood that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (4)

1. A version rubber roller of a printing machine, comprising a rubber roller rotating shaft and a rubber, the rubber wrapping the rubber roller rotating shaft, characterized in that: the two ends of the rubber roller rotating shaft extend out of the rubber , and the two ends of the rotation shaft of the rubber roller are respectively provided with pads, and a gap is left between the pads and the rubber. 2. The plate-relief rubber roller of a printing machine according to claim 1, characterized in that: the length of the rubber is the same as that of the printing plate cylinder, when the plate-relief rubber roller and the plate cylinder are butted and rolled , the bearing member abuts and rolls with the shoulder iron of the plate cylinder. 3. The plate-relief rubber roller of a printing machine according to claim 1, characterized in that: the two sides of the pad are respectively provided with limit pieces, and a limit groove is formed between the two limit pieces . 4. The plate-relief rubber roller of a printing machine according to claim 1, characterized in that: two ends of the rubber are respectively provided with blocking pieces.