CN107571611A - Printing rubber roll - Google Patents

Abstract

The invention discloses printing rubber roll, including roll body and it is wrapped in the cylindrical layer of silica gel of roll body, it is characterised in that：The cylindrical of the roll body sets local hard projection in specified circumference position, and the height of the hard projection of part is less than the thickness of layer of silica gel, and whole length direction of the hard projection of part along roll body is laid.The local change of printing impressing dynamics can be achieved in the present invention in rotation process is printed, and to meet the printing demand of the deeper ink of printed sheet local requirement, improves the printing class of printing.

Description

Printing rubber roll

Technical field

The present invention relates to a kind of printing equipment accessory, more particularly to one kind in printing work with plate cylinder imprint contact Printing rubber roll.

Background technology

During printing work, printing rubber roll is pressed into contact with printing equipment with plate cylinder, but between the two Impressing dynamics is held essentially constant constant.So, there are the printing of special print request, such as the part of printed sheet for some The part of printing is set more to have a sense of hierarchy it is required that printing deeper, thicker ink, common printing presses cannot give in printing process To realize, it is necessary to increase later process, so can make the structure of equipment become complicated, the high appearance and size of equipment cost is big.

The content of the invention

For the deficiency of background technology, the purpose of the present invention is intended to provide one kind achievable print in rotation process is printed The local change of brush impressing dynamics, to meet the printing demand of the deeper ink of printed sheet local requirement, improve printing printing class Printing rubber roll.

The present invention is implemented by the following technical programs：

Printing rubber roll, including roll body and it is wrapped in the cylindrical layer of silica gel of roll body, it is characterised in that：The roll body it is cylindrical specific Circumferential position sets local hard projection, and the height of the hard projection of part is less than the thickness of layer of silica gel, the hard projection edge of part Laid in the whole length direction of roll body.

Using the printing rubber roll of above-mentioned technical proposal, roll body machines, roll body is cylindrical pour layer of silica gel before, first in roller Round specified circumference position sets local hard projection in vitro, then carries out the parcel of the cylindrical layer of silica gel of roll body again, is so made Printing rubber roll, just have different bondline thickness in a circumferential direction；So, printing rubber roll is compressing with printing plate cylinder In the printing rotation process of contact, because the centre distance of printing rubber roll and plate cylinder is constant, so the deformation that rubber roll is cylindrical Amount is certain；But its cylindrical glue-line of rubber roll for being not provided with local hard protrusion position can be thicker softer, rubber roll and plate cylinder Between impressing dynamics also can be relatively small, and set its cylindrical glue-line of rubber roll at local hard protrusion position can be relatively thin, same Impressing dynamics on the premise of deflection between plate cylinder can be relatively large, and then ink is printed deeper, thicklyer Onto printed sheet, so as to realize that the local of printing impressing dynamics changes, to meet the printing demand of the local deeper ink of printed sheet, improve Printing prints class.

Preferably, the top of the hard projection of part is dome, the surface distance from the layer of silica gel is controlled in 6- 8mm。

Preferably, the roll body is hollow pipe, its both ends is fixed with end cap, and end cap is connected with roll shaft and is integrated knot Structure.

Brief description of the drawings

The present invention has the following drawings：

Fig. 1 is the structural representation of the present invention,

Fig. 2 is Fig. 1 A-A views.

Embodiment

As illustrated, the printing rubber roll of the present invention, including roll body 1 and it is wrapped in the cylindrical layer of silica gel 2 of roll body 1, the roller Body 1 is hollow pipe, and its both ends is fixed with end cap 4, and end cap 4 is connected and is structure as a whole with roll shaft 5；The roll body 1 it is cylindrical The local hard projection 3 of metal material is set in specified circumference position, and the bottom of local hard projection 3 is fixedly welded on roll body 1, institute The height for stating local hard projection 3 is less than the thickness of layer of silica gel 2, and the top of the hard projection 3 of part is dome, from the silica gel The surface distance control of layer 2 is laid in 6-8mm, whole length direction of the hard projection 3 of part along roll body 1.

Claims (3)

1. printing rubber roll, including roll body and it is wrapped in the cylindrical layer of silica gel of roll body, it is characterised in that：The roll body it is cylindrical in spy Determine circumferential position and local hard projection is set, the height of the hard projection of part is less than the thickness of layer of silica gel, the hard projection of part Laid along the whole length direction of roll body.

2. printing rubber roll as claimed in claim 1, it is characterised in that：The top of the hard projection of part is dome, from institute The surface distance for stating layer of silica gel is controlled in 6-8mm.

3. printing rubber roll as claimed in claim 1, it is characterised in that：The roll body is hollow pipe, and its both ends is fixed with end Lid, end cap are connected and are structure as a whole with roll shaft.